From 01b6b810a69a507fc2658bef836e545e870907eb Mon Sep 17 00:00:00 2001
From: wangyu <823267011@qq.com>
Date: Wed, 29 Apr 2026 13:53:37 +0800
Subject: [PATCH] =?UTF-8?q?feat(roll):=20=E5=AE=8C=E6=88=90=E8=BD=A7?=
 =?UTF-8?q?=E8=BE=8A=E7=AE=A1=E7=90=86=E5=85=A8=E6=A0=88=E6=A8=A1=E5=9D=97?=
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DB：mill_roll（轧辊库）+ mill_roll_change（换辊记录），已执行到服务器

后端：
- MillRoll / MillRollChange domain
- Mapper 接口 + XML（keyProperty 正确：rollId/changeId）
- Service + ServiceImpl（换辊时自动更新轧辊 status 为 Online Use）
- MillRollController /mill/roll + MillRollChangeController /mill/rollChange

前端：
- api/mill/roll.js 8个接口函数
- views/mill/roll.vue 三段式布局
  ·上：换辊数据历史表格
  ·左下：当前辊系参数（6辊图形 CSS 圆圈 + 编号/径/时间展示）
  ·右下：轧辊库表格 + 条件查询 + 更换/添加/修改/删除操作
- 路由注册 /mill/roll

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .../controller/MillRollChangeController.java  |  33 +
 .../mill/controller/MillRollController.java   |  47 +
 .../java/com/ruoyi/mill/domain/MillRoll.java  |  33 +
 .../com/ruoyi/mill/domain/MillRollChange.java |  60 ++
 .../mill/mapper/MillRollChangeMapper.java     |  13 +
 .../com/ruoyi/mill/mapper/MillRollMapper.java |  20 +
 .../mill/service/IMillRollChangeService.java  |  13 +
 .../ruoyi/mill/service/IMillRollService.java  |  17 +
 .../impl/MillRollChangeServiceImpl.java       |  77 ++
 .../service/impl/MillRollServiceImpl.java     |  49 ++
 .../mapper/mill/MillRollChangeMapper.xml      |  70 ++
 .../resources/mapper/mill/MillRollMapper.xml  |  92 ++
 ruoyi-ui/src/api/mill/roll.js                 |  33 +
 ruoyi-ui/src/router/index.js                  |  13 +
 ruoyi-ui/src/views/mill/roll.vue              | 822 ++++++++++++++++++
 sql/mill_roll_tables.sql                      |  44 +
 16 files changed, 1436 insertions(+)
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollChangeController.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollController.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRoll.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRollChange.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollChangeMapper.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollMapper.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollChangeService.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollService.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollChangeServiceImpl.java
 create mode 100644 ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollServiceImpl.java
 create mode 100644 ruoyi-mill/src/main/resources/mapper/mill/MillRollChangeMapper.xml
 create mode 100644 ruoyi-mill/src/main/resources/mapper/mill/MillRollMapper.xml
 create mode 100644 ruoyi-ui/src/api/mill/roll.js
 create mode 100644 ruoyi-ui/src/views/mill/roll.vue
 create mode 100644 sql/mill_roll_tables.sql

diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollChangeController.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollChangeController.java
new file mode 100644
index 00000000..0c1de0dc
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollChangeController.java
@@ -0,0 +1,33 @@
+package com.ruoyi.mill.controller;
+
+import com.ruoyi.common.core.controller.BaseController;
+import com.ruoyi.common.core.domain.AjaxResult;
+import com.ruoyi.common.core.page.TableDataInfo;
+import com.ruoyi.mill.domain.MillRollChange;
+import com.ruoyi.mill.service.IMillRollChangeService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/mill/rollChange")
+public class MillRollChangeController extends BaseController {
+
+    @Autowired
+    private IMillRollChangeService changeService;
+
+    @GetMapping("/list")
+    public TableDataInfo list(MillRollChange query) {
+        startPage();
+        return getDataTable(changeService.selectList(query));
+    }
+
+    @GetMapping("/current")
+    public AjaxResult current() {
+        return AjaxResult.success(changeService.selectLatest());
+    }
+
+    @PostMapping
+    public AjaxResult add(@RequestBody MillRollChange change) {
+        return toAjax(changeService.addChange(change));
+    }
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollController.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollController.java
new file mode 100644
index 00000000..fe6d48cc
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MillRollController.java
@@ -0,0 +1,47 @@
+package com.ruoyi.mill.controller;
+
+import com.ruoyi.common.core.controller.BaseController;
+import com.ruoyi.common.core.domain.AjaxResult;
+import com.ruoyi.common.core.page.TableDataInfo;
+import com.ruoyi.mill.domain.MillRoll;
+import com.ruoyi.mill.service.IMillRollService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/mill/roll")
+public class MillRollController extends BaseController {
+
+    @Autowired
+    private IMillRollService rollService;
+
+    @GetMapping("/list")
+    public TableDataInfo list(MillRoll query) {
+        startPage();
+        return getDataTable(rollService.selectList(query));
+    }
+
+    @GetMapping("/{id}")
+    public AjaxResult getInfo(@PathVariable Long id) {
+        return AjaxResult.success(rollService.selectById(id));
+    }
+
+    @PostMapping
+    public AjaxResult add(@RequestBody MillRoll roll) {
+        int rows = rollService.insert(roll);
+        if (rows > 0) {
+            return AjaxResult.success(roll.getRollId());
+        }
+        return AjaxResult.error("新增失败");
+    }
+
+    @PutMapping
+    public AjaxResult edit(@RequestBody MillRoll roll) {
+        return toAjax(rollService.update(roll));
+    }
+
+    @DeleteMapping("/{ids}")
+    public AjaxResult remove(@PathVariable Long[] ids) {
+        return toAjax(rollService.deleteByIds(ids));
+    }
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRoll.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRoll.java
new file mode 100644
index 00000000..b5543297
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRoll.java
@@ -0,0 +1,33 @@
+package com.ruoyi.mill.domain;
+
+import com.ruoyi.common.core.domain.BaseEntity;
+import lombok.Data;
+import java.math.BigDecimal;
+
+/** 轧辊库 */
+@Data
+public class MillRoll extends BaseEntity {
+
+    private Long rollId;
+
+    /** 轧辊编号 */
+    private String rollNo;
+
+    /** 轧辊类型 WR/IR/BR */
+    private String rollType;
+
+    /** 使用状态 */
+    private String status;
+
+    /** 初始辊径(mm) */
+    private BigDecimal initialDia;
+
+    /** 当前辊径(mm) */
+    private BigDecimal currentDia;
+
+    /** 标志位 */
+    private String flag;
+
+    /** 删除标志 0正常 2删除 */
+    private String delFlag;
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRollChange.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRollChange.java
new file mode 100644
index 00000000..1e417318
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MillRollChange.java
@@ -0,0 +1,60 @@
+package com.ruoyi.mill.domain;
+
+import com.ruoyi.common.core.domain.BaseEntity;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.Data;
+import java.math.BigDecimal;
+import java.util.Date;
+
+/** 换辊记录 */
+@Data
+public class MillRollChange extends BaseEntity {
+
+    private Long changeId;
+
+    /** 换辊时间 */
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private Date changeTime;
+
+    /** 换辊状态 */
+    private String changeStatus;
+
+    /** 上工作辊编号 */
+    private String upperWrNo;
+
+    /** 上工作辊径(mm) */
+    private BigDecimal upperWrDia;
+
+    /** 下工作辊编号 */
+    private String lowerWrNo;
+
+    /** 下工作辊径(mm) */
+    private BigDecimal lowerWrDia;
+
+    /** 上中间辊编号 */
+    private String upperIrNo;
+
+    /** 上中间辊径(mm) */
+    private BigDecimal upperIrDia;
+
+    /** 下中间辊编号 */
+    private String lowerIrNo;
+
+    /** 下中间辊径(mm) */
+    private BigDecimal lowerIrDia;
+
+    /** 上支承辊编号 */
+    private String upperBrNo;
+
+    /** 上支承辊径(mm) */
+    private BigDecimal upperBrDia;
+
+    /** 下支承辊编号 */
+    private String lowerBrNo;
+
+    /** 下支承辊径(mm) */
+    private BigDecimal lowerBrDia;
+
+    /** 删除标志 0正常 2删除 */
+    private String delFlag;
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollChangeMapper.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollChangeMapper.java
new file mode 100644
index 00000000..64de2eca
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollChangeMapper.java
@@ -0,0 +1,13 @@
+package com.ruoyi.mill.mapper;
+
+import com.ruoyi.mill.domain.MillRollChange;
+import java.util.List;
+
+public interface MillRollChangeMapper {
+
+    List<MillRollChange> selectList(MillRollChange query);
+
+    MillRollChange selectLatest();
+
+    int insert(MillRollChange change);
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollMapper.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollMapper.java
new file mode 100644
index 00000000..708e3375
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MillRollMapper.java
@@ -0,0 +1,20 @@
+package com.ruoyi.mill.mapper;
+
+import com.ruoyi.mill.domain.MillRoll;
+import org.apache.ibatis.annotations.Param;
+import java.util.List;
+
+public interface MillRollMapper {
+
+    List<MillRoll> selectList(MillRoll query);
+
+    MillRoll selectById(Long rollId);
+
+    int insert(MillRoll roll);
+
+    int update(MillRoll roll);
+
+    int deleteByIds(Long[] ids);
+
+    int updateStatus(@Param("rollId") Long rollId, @Param("status") String status);
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollChangeService.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollChangeService.java
new file mode 100644
index 00000000..6da1149b
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollChangeService.java
@@ -0,0 +1,13 @@
+package com.ruoyi.mill.service;
+
+import com.ruoyi.mill.domain.MillRollChange;
+import java.util.List;
+
+public interface IMillRollChangeService {
+
+    List<MillRollChange> selectList(MillRollChange query);
+
+    MillRollChange selectLatest();
+
+    int addChange(MillRollChange change);
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollService.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollService.java
new file mode 100644
index 00000000..f93e53d4
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/IMillRollService.java
@@ -0,0 +1,17 @@
+package com.ruoyi.mill.service;
+
+import com.ruoyi.mill.domain.MillRoll;
+import java.util.List;
+
+public interface IMillRollService {
+
+    List<MillRoll> selectList(MillRoll query);
+
+    MillRoll selectById(Long rollId);
+
+    int insert(MillRoll roll);
+
+    int update(MillRoll roll);
+
+    int deleteByIds(Long[] ids);
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollChangeServiceImpl.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollChangeServiceImpl.java
new file mode 100644
index 00000000..b601cf6b
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollChangeServiceImpl.java
@@ -0,0 +1,77 @@
+package com.ruoyi.mill.service.impl;
+
+import com.ruoyi.common.utils.SecurityUtils;
+import com.ruoyi.mill.domain.MillRoll;
+import com.ruoyi.mill.domain.MillRollChange;
+import com.ruoyi.mill.mapper.MillRollChangeMapper;
+import com.ruoyi.mill.mapper.MillRollMapper;
+import com.ruoyi.mill.service.IMillRollChangeService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Date;
+import java.util.List;
+
+@Service
+public class MillRollChangeServiceImpl implements IMillRollChangeService {
+
+    @Autowired
+    private MillRollChangeMapper changeMapper;
+
+    @Autowired
+    private MillRollMapper rollMapper;
+
+    @Override
+    public List<MillRollChange> selectList(MillRollChange query) {
+        return changeMapper.selectList(query);
+    }
+
+    @Override
+    public MillRollChange selectLatest() {
+        return changeMapper.selectLatest();
+    }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public int addChange(MillRollChange change) {
+        String user = SecurityUtils.getUsername();
+        change.setCreateBy(user);
+        change.setUpdateBy(user);
+        change.setDelFlag("0");
+        if (change.getChangeTime() == null) {
+            change.setChangeTime(new Date());
+        }
+        if (change.getChangeStatus() == null || change.getChangeStatus().isEmpty()) {
+            change.setChangeStatus("新辊换上");
+        }
+
+        int rows = changeMapper.insert(change);
+
+        // Update roll status to "Online Use" for each populated roll position
+        updateRollStatusByNo(change.getUpperWrNo(), "Online Use");
+        updateRollStatusByNo(change.getLowerWrNo(), "Online Use");
+        updateRollStatusByNo(change.getUpperIrNo(), "Online Use");
+        updateRollStatusByNo(change.getLowerIrNo(), "Online Use");
+        updateRollStatusByNo(change.getUpperBrNo(), "Online Use");
+        updateRollStatusByNo(change.getLowerBrNo(), "Online Use");
+
+        return rows;
+    }
+
+    /**
+     * Find roll by roll_no and update its status.
+     * Silently skips if roll_no is blank or roll not found.
+     */
+    private void updateRollStatusByNo(String rollNo, String newStatus) {
+        if (rollNo == null || rollNo.trim().isEmpty()) {
+            return;
+        }
+        MillRoll query = new MillRoll();
+        query.setRollNo(rollNo.trim());
+        List<MillRoll> list = rollMapper.selectList(query);
+        if (!list.isEmpty()) {
+            rollMapper.updateStatus(list.get(0).getRollId(), newStatus);
+        }
+    }
+}
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollServiceImpl.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollServiceImpl.java
new file mode 100644
index 00000000..fc3ae291
--- /dev/null
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MillRollServiceImpl.java
@@ -0,0 +1,49 @@
+package com.ruoyi.mill.service.impl;
+
+import com.ruoyi.common.utils.SecurityUtils;
+import com.ruoyi.mill.domain.MillRoll;
+import com.ruoyi.mill.mapper.MillRollMapper;
+import com.ruoyi.mill.service.IMillRollService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import java.util.List;
+
+@Service
+public class MillRollServiceImpl implements IMillRollService {
+
+    @Autowired
+    private MillRollMapper rollMapper;
+
+    @Override
+    public List<MillRoll> selectList(MillRoll query) {
+        return rollMapper.selectList(query);
+    }
+
+    @Override
+    public MillRoll selectById(Long rollId) {
+        return rollMapper.selectById(rollId);
+    }
+
+    @Override
+    public int insert(MillRoll roll) {
+        String user = SecurityUtils.getUsername();
+        roll.setCreateBy(user);
+        roll.setUpdateBy(user);
+        roll.setDelFlag("0");
+        if (roll.getStatus() == null || roll.getStatus().isEmpty()) {
+            roll.setStatus("Offline");
+        }
+        return rollMapper.insert(roll);
+    }
+
+    @Override
+    public int update(MillRoll roll) {
+        roll.setUpdateBy(SecurityUtils.getUsername());
+        return rollMapper.update(roll);
+    }
+
+    @Override
+    public int deleteByIds(Long[] ids) {
+        return rollMapper.deleteByIds(ids);
+    }
+}
diff --git a/ruoyi-mill/src/main/resources/mapper/mill/MillRollChangeMapper.xml b/ruoyi-mill/src/main/resources/mapper/mill/MillRollChangeMapper.xml
new file mode 100644
index 00000000..f8c11e28
--- /dev/null
+++ b/ruoyi-mill/src/main/resources/mapper/mill/MillRollChangeMapper.xml
@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.ruoyi.mill.mapper.MillRollChangeMapper">
+
+    <resultMap id="BaseRM" type="com.ruoyi.mill.domain.MillRollChange">
+        <id     property="changeId"     column="change_id"/>
+        <result property="changeTime"   column="change_time"/>
+        <result property="changeStatus" column="change_status"/>
+        <result property="upperWrNo"    column="upper_wr_no"/>
+        <result property="upperWrDia"   column="upper_wr_dia"/>
+        <result property="lowerWrNo"    column="lower_wr_no"/>
+        <result property="lowerWrDia"   column="lower_wr_dia"/>
+        <result property="upperIrNo"    column="upper_ir_no"/>
+        <result property="upperIrDia"   column="upper_ir_dia"/>
+        <result property="lowerIrNo"    column="lower_ir_no"/>
+        <result property="lowerIrDia"   column="lower_ir_dia"/>
+        <result property="upperBrNo"    column="upper_br_no"/>
+        <result property="upperBrDia"   column="upper_br_dia"/>
+        <result property="lowerBrNo"    column="lower_br_no"/>
+        <result property="lowerBrDia"   column="lower_br_dia"/>
+        <result property="delFlag"      column="del_flag"/>
+        <result property="createBy"     column="create_by"/>
+        <result property="createTime"   column="create_time"/>
+        <result property="updateBy"     column="update_by"/>
+        <result property="updateTime"   column="update_time"/>
+        <result property="remark"       column="remark"/>
+    </resultMap>
+
+    <sql id="cols">
+        change_id, change_time, change_status,
+        upper_wr_no, upper_wr_dia, lower_wr_no, lower_wr_dia,
+        upper_ir_no, upper_ir_dia, lower_ir_no, lower_ir_dia,
+        upper_br_no, upper_br_dia, lower_br_no, lower_br_dia,
+        del_flag, create_by, create_time, update_by, update_time, remark
+    </sql>
+
+    <select id="selectList" resultMap="BaseRM">
+        SELECT <include refid="cols"/> FROM mill_roll_change
+        WHERE del_flag = '0'
+        <if test="changeStatus != null and changeStatus != ''">
+            AND change_status = #{changeStatus}
+        </if>
+        ORDER BY change_time DESC
+    </select>
+
+    <select id="selectLatest" resultMap="BaseRM">
+        SELECT <include refid="cols"/> FROM mill_roll_change
+        WHERE del_flag = '0'
+        ORDER BY change_id DESC
+        LIMIT 1
+    </select>
+
+    <insert id="insert" useGeneratedKeys="true" keyProperty="changeId">
+        INSERT INTO mill_roll_change (
+            change_time, change_status,
+            upper_wr_no, upper_wr_dia, lower_wr_no, lower_wr_dia,
+            upper_ir_no, upper_ir_dia, lower_ir_no, lower_ir_dia,
+            upper_br_no, upper_br_dia, lower_br_no, lower_br_dia,
+            del_flag, create_by, create_time, update_by, update_time, remark
+        ) VALUES (
+            #{changeTime}, #{changeStatus},
+            #{upperWrNo}, #{upperWrDia}, #{lowerWrNo}, #{lowerWrDia},
+            #{upperIrNo}, #{upperIrDia}, #{lowerIrNo}, #{lowerIrDia},
+            #{upperBrNo}, #{upperBrDia}, #{lowerBrNo}, #{lowerBrDia},
+            '0', #{createBy}, NOW(), #{updateBy}, NOW(), #{remark}
+        )
+    </insert>
+
+</mapper>
diff --git a/ruoyi-mill/src/main/resources/mapper/mill/MillRollMapper.xml b/ruoyi-mill/src/main/resources/mapper/mill/MillRollMapper.xml
new file mode 100644
index 00000000..a98b2c09
--- /dev/null
+++ b/ruoyi-mill/src/main/resources/mapper/mill/MillRollMapper.xml
@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.ruoyi.mill.mapper.MillRollMapper">
+
+    <resultMap id="BaseRM" type="com.ruoyi.mill.domain.MillRoll">
+        <id     property="rollId"     column="roll_id"/>
+        <result property="rollNo"     column="roll_no"/>
+        <result property="rollType"   column="roll_type"/>
+        <result property="status"     column="status"/>
+        <result property="initialDia" column="initial_dia"/>
+        <result property="currentDia" column="current_dia"/>
+        <result property="flag"       column="flag"/>
+        <result property="delFlag"    column="del_flag"/>
+        <result property="createBy"   column="create_by"/>
+        <result property="createTime" column="create_time"/>
+        <result property="updateBy"   column="update_by"/>
+        <result property="updateTime" column="update_time"/>
+        <result property="remark"     column="remark"/>
+    </resultMap>
+
+    <sql id="cols">
+        roll_id, roll_no, roll_type, status, initial_dia, current_dia,
+        flag, del_flag, create_by, create_time, update_by, update_time, remark
+    </sql>
+
+    <select id="selectList" resultMap="BaseRM">
+        SELECT <include refid="cols"/> FROM mill_roll
+        WHERE del_flag = '0'
+        <if test="rollNo != null and rollNo != ''">
+            AND roll_no LIKE CONCAT('%', #{rollNo}, '%')
+        </if>
+        <if test="rollType != null and rollType != ''">
+            AND roll_type = #{rollType}
+        </if>
+        <if test="status != null and status != ''">
+            AND status = #{status}
+        </if>
+        ORDER BY roll_id ASC
+    </select>
+
+    <select id="selectById" resultMap="BaseRM">
+        SELECT <include refid="cols"/> FROM mill_roll
+        WHERE roll_id = #{rollId} AND del_flag = '0'
+    </select>
+
+    <insert id="insert" useGeneratedKeys="true" keyProperty="rollId">
+        INSERT INTO mill_roll (
+            roll_no, roll_type, status, initial_dia, current_dia,
+            flag, del_flag, create_by, create_time, update_by, update_time, remark
+        ) VALUES (
+            #{rollNo}, #{rollType},
+            <choose>
+                <when test="status != null and status != ''">#{status}</when>
+                <otherwise>'Offline'</otherwise>
+            </choose>,
+            #{initialDia}, #{currentDia},
+            #{flag}, '0',
+            #{createBy}, NOW(), #{updateBy}, NOW(), #{remark}
+        )
+    </insert>
+
+    <update id="update">
+        UPDATE mill_roll
+        <set>
+            <if test="rollNo != null and rollNo != ''">roll_no = #{rollNo},</if>
+            <if test="rollType != null and rollType != ''">roll_type = #{rollType},</if>
+            <if test="status != null">status = #{status},</if>
+            <if test="initialDia != null">initial_dia = #{initialDia},</if>
+            <if test="currentDia != null">current_dia = #{currentDia},</if>
+            <if test="flag != null">flag = #{flag},</if>
+            <if test="remark != null">remark = #{remark},</if>
+            update_by = #{updateBy},
+            update_time = NOW()
+        </set>
+        WHERE roll_id = #{rollId} AND del_flag = '0'
+    </update>
+
+    <update id="deleteByIds">
+        UPDATE mill_roll SET del_flag = '2', update_time = NOW()
+        WHERE roll_id IN
+        <foreach collection="array" item="id" open="(" separator="," close=")">
+            #{id}
+        </foreach>
+    </update>
+
+    <update id="updateStatus">
+        UPDATE mill_roll SET status = #{status}, update_time = NOW()
+        WHERE roll_id = #{rollId}
+    </update>
+
+</mapper>
diff --git a/ruoyi-ui/src/api/mill/roll.js b/ruoyi-ui/src/api/mill/roll.js
new file mode 100644
index 00000000..99887b87
--- /dev/null
+++ b/ruoyi-ui/src/api/mill/roll.js
@@ -0,0 +1,33 @@
+import request from '@/utils/request'
+
+export function listRoll(query) {
+  return request({ url: '/mill/roll/list', method: 'get', params: query })
+}
+
+export function getRoll(id) {
+  return request({ url: `/mill/roll/${id}`, method: 'get' })
+}
+
+export function addRoll(data) {
+  return request({ url: '/mill/roll', method: 'post', data })
+}
+
+export function updateRoll(data) {
+  return request({ url: '/mill/roll', method: 'put', data })
+}
+
+export function delRoll(ids) {
+  return request({ url: `/mill/roll/${ids}`, method: 'delete' })
+}
+
+export function listRollChange(query) {
+  return request({ url: '/mill/rollChange/list', method: 'get', params: query })
+}
+
+export function getCurrentRolls() {
+  return request({ url: '/mill/rollChange/current', method: 'get' })
+}
+
+export function addRollChange(data) {
+  return request({ url: '/mill/rollChange', method: 'post', data })
+}
diff --git a/ruoyi-ui/src/router/index.js b/ruoyi-ui/src/router/index.js
index 2ff1dd07..b4259b6c 100644
--- a/ruoyi-ui/src/router/index.js
+++ b/ruoyi-ui/src/router/index.js
@@ -205,6 +205,19 @@ export const constantRoutes = [
       }
     ]
   },
+  {
+    path: '/mill',
+    component: Layout,
+    hidden: true,
+    children: [
+      {
+        path: 'roll',
+        component: () => import('@/views/mill/roll'),
+        name: 'MillRoll',
+        meta: { title: '轧辊管理', icon: '' }
+      }
+    ]
+  },
 ]
 
 // 动态路由，基于用户权限动态去加载
diff --git a/ruoyi-ui/src/views/mill/roll.vue b/ruoyi-ui/src/views/mill/roll.vue
new file mode 100644
index 00000000..08f4f2ec
--- /dev/null
+++ b/ruoyi-ui/src/views/mill/roll.vue
@@ -0,0 +1,822 @@
+<template>
+  <div class="roll-page">
+
+    <!-- ===== TOP: 换辊数据 ===== -->
+    <div class="change-section">
+      <div class="section-header"><span>换辊数据</span></div>
+      <el-table :data="changeList" border size="mini" class="change-table"
+                height="calc(35vh - 80px)"
+                :row-class-name="changeRowClass">
+        <el-table-column label="换辊时间"     prop="changeTime"  width="140" align="center" />
+        <el-table-column label="状态"         prop="changeStatus" width="90"  align="center">
+          <template slot-scope="{ row }">
+            <span class="status-tag">{{ row.changeStatus }}</span>
+          </template>
+        </el-table-column>
+        <el-table-column label="上工作辊编号" prop="upperWrNo"   width="110" />
+        <el-table-column label="上工作辊径"   prop="upperWrDia"  width="95"  align="right" />
+        <el-table-column label="下工作辊编号" prop="lowerWrNo"   width="110" />
+        <el-table-column label="下工作辊径"   prop="lowerWrDia"  width="95"  align="right" />
+        <el-table-column label="上中间辊编号" prop="upperIrNo"   width="110" />
+        <el-table-column label="上中间辊径"   prop="upperIrDia"  width="95"  align="right" />
+        <el-table-column label="下中间辊编号" prop="lowerIrNo"   width="110" />
+        <el-table-column label="下中间辊径"   prop="lowerIrDia"  width="95"  align="right" />
+        <el-table-column label="上支承辊编号" prop="upperBrNo"   width="110" />
+        <el-table-column label="上支承辊径"   prop="upperBrDia"  width="95"  align="right" />
+        <el-table-column label="下支承辊编号" prop="lowerBrNo"   width="110" />
+        <el-table-column label="下支承辊径"   prop="lowerBrDia"  width="95"  align="right" />
+      </el-table>
+    </div>
+
+    <!-- ===== BOTTOM: Two panels ===== -->
+    <div class="bottom-section">
+
+      <!-- LEFT: 当前辊系参数 graphical display -->
+      <div class="rolls-panel">
+        <div class="section-header"><span>当前辊系参数</span></div>
+        <div class="rolls-body">
+          <div class="roll-stack">
+
+            <!-- 上支承辊 -->
+            <div class="roll-row">
+              <div class="roll-circle br-circle">
+                <span class="roll-abbr">上支承辊</span>
+              </div>
+              <div class="roll-info">
+                <div class="roll-info-row">
+                  <span class="info-label">辊号</span>
+                  <span class="info-val">{{ currentRolls.upperBrNo || '--' }}</span>
+                </div>
+                <div class="roll-info-row">
+                  <span class="info-label">辊径</span>
+                  <span class="info-val">{{ currentRolls.upperBrDia != null ? currentRolls.upperBrDia + ' mm' : '--' }}</span>
+                </div>
+              </div>
+            </div>
+
+            <div class="stack-connector"></div>
+
+            <!-- 上中间辊 -->
+            <div class="roll-row">
+              <div class="roll-circle ir-circle">
+                <span class="roll-abbr">上中间辊</span>
+              </div>
+              <div class="roll-info">
+                <div class="roll-info-row">
+                  <span class="info-label">辊号</span>
+                  <span class="info-val">{{ currentRolls.upperIrNo || '--' }}</span>
+                </div>
+                <div class="roll-info-row">
+                  <span class="info-label">辊径</span>
+                  <span class="info-val">{{ currentRolls.upperIrDia != null ? currentRolls.upperIrDia + ' mm' : '--' }}</span>
+                </div>
+              </div>
+            </div>
+
+            <div class="stack-connector"></div>
+
+            <!-- 上工作辊 -->
+            <div class="roll-row">
+              <div class="roll-circle wr-circle">
+                <span class="roll-abbr">上工作辊</span>
+              </div>
+              <div class="roll-info">
+                <div class="roll-info-row">
+                  <span class="info-label">辊号</span>
+                  <span class="info-val">{{ currentRolls.upperWrNo || '--' }}</span>
+                </div>
+                <div class="roll-info-row">
+                  <span class="info-label">辊径</span>
+                  <span class="info-val">{{ currentRolls.upperWrDia != null ? currentRolls.upperWrDia + ' mm' : '--' }}</span>
+                </div>
+              </div>
+            </div>
+
+            <div class="nip-line">
+              <span class="nip-label">轧制线</span>
+            </div>
+
+            <!-- 下工作辊 -->
+            <div class="roll-row">
+              <div class="roll-circle wr-circle">
+                <span class="roll-abbr">下工作辊</span>
+              </div>
+              <div class="roll-info">
+                <div class="roll-info-row">
+                  <span class="info-label">辊号</span>
+                  <span class="info-val">{{ currentRolls.lowerWrNo || '--' }}</span>
+                </div>
+                <div class="roll-info-row">
+                  <span class="info-label">辊径</span>
+                  <span class="info-val">{{ currentRolls.lowerWrDia != null ? currentRolls.lowerWrDia + ' mm' : '--' }}</span>
+                </div>
+              </div>
+            </div>
+
+            <div class="stack-connector"></div>
+
+            <!-- 下中间辊 -->
+            <div class="roll-row">
+              <div class="roll-circle ir-circle">
+                <span class="roll-abbr">下中间辊</span>
+              </div>
+              <div class="roll-info">
+                <div class="roll-info-row">
+                  <span class="info-label">辊号</span>
+                  <span class="info-val">{{ currentRolls.lowerIrNo || '--' }}</span>
+                </div>
+                <div class="roll-info-row">
+                  <span class="info-label">辊径</span>
+                  <span class="info-val">{{ currentRolls.lowerIrDia != null ? currentRolls.lowerIrDia + ' mm' : '--' }}</span>
+                </div>
+              </div>
+            </div>
+
+            <div class="stack-connector"></div>
+
+            <!-- 下支承辊 -->
+            <div class="roll-row">
+              <div class="roll-circle br-circle">
+                <span class="roll-abbr">下支承辊</span>
+              </div>
+              <div class="roll-info">
+                <div class="roll-info-row">
+                  <span class="info-label">辊号</span>
+                  <span class="info-val">{{ currentRolls.lowerBrNo || '--' }}</span>
+                </div>
+                <div class="roll-info-row">
+                  <span class="info-label">辊径</span>
+                  <span class="info-val">{{ currentRolls.lowerBrDia != null ? currentRolls.lowerBrDia + ' mm' : '--' }}</span>
+                </div>
+              </div>
+            </div>
+
+          </div>
+
+          <!-- 换辊时间 -->
+          <div class="change-time-bar">
+            <span class="ct-label">换辊时间：</span>
+            <span class="ct-val">{{ currentRolls.changeTime || '--' }}</span>
+          </div>
+        </div>
+      </div>
+
+      <!-- RIGHT: 轧辊库数据 -->
+      <div class="rolldb-panel">
+        <div class="section-header"><span>轧辊库数据</span></div>
+
+        <!-- Query bar -->
+        <div class="query-bar">
+          <el-select v-model="queryField" size="mini" style="width:110px;margin-right:6px">
+            <el-option label="轧辊编号" value="rollNo" />
+            <el-option label="轧辊类型" value="rollType" />
+            <el-option label="使用状态" value="status" />
+          </el-select>
+          <el-input v-model="queryValue" size="mini" placeholder="查询条件" style="width:140px;margin-right:6px"
+                    @keyup.enter.native="handleConditionQuery" clearable />
+          <el-button size="mini" type="primary" icon="el-icon-search" @click="handleConditionQuery">条件查询</el-button>
+          <el-button size="mini" icon="el-icon-refresh" @click="handleAllQuery">全部查询</el-button>
+        </div>
+
+        <!-- Action buttons -->
+        <div class="action-bar">
+          <el-button size="mini" type="primary" icon="el-icon-refresh-right" @click="openChangeRollDialog">更换轧辊</el-button>
+          <el-button size="mini" icon="el-icon-plus"   @click="openAddDialog">轧辊添加</el-button>
+          <el-button size="mini" icon="el-icon-edit"   :disabled="!selectedRoll" @click="openEditDialog">轧辊修改</el-button>
+          <el-button size="mini" icon="el-icon-delete" :disabled="!selectedRoll" @click="handleDelete">轧辊删除</el-button>
+        </div>
+
+        <!-- Roll library table -->
+        <el-table :data="rollList" border size="mini" class="roll-table"
+                  height="calc(65vh - 160px)"
+                  highlight-current-row
+                  @current-change="handleRollSelect">
+          <el-table-column label="ID"       prop="rollId"    width="60"  align="center" />
+          <el-table-column label="轧辊编号" prop="rollNo"    width="110" />
+          <el-table-column label="轧辊类型" prop="rollType"  width="80"  align="center">
+            <template slot-scope="{ row }">
+              <span :class="rollTypeClass(row.rollType)">{{ row.rollType }}</span>
+            </template>
+          </el-table-column>
+          <el-table-column label="使用状态" prop="status"    width="100" align="center">
+            <template slot-scope="{ row }">
+              <span :class="rollStatusClass(row.status)">{{ row.status }}</span>
+            </template>
+          </el-table-column>
+          <el-table-column label="初始辊径" prop="initialDia" width="85" align="right">
+            <template slot-scope="{ row }">{{ row.initialDia }} mm</template>
+          </el-table-column>
+          <el-table-column label="当前辊径" prop="currentDia" width="85" align="right">
+            <template slot-scope="{ row }">{{ row.currentDia }} mm</template>
+          </el-table-column>
+          <el-table-column label="标志位"   prop="flag"      width="65"  align="center" />
+          <el-table-column label="备注"     prop="remark"    min-width="80" />
+        </el-table>
+      </div>
+    </div>
+
+    <!-- ===== Dialog: 轧辊添加/修改 ===== -->
+    <el-dialog :title="rollDialogTitle" :visible.sync="rollDialogVisible"
+               width="480px" append-to-body>
+      <el-form :model="rollForm" :rules="rollRules" ref="rollFormRef"
+               size="mini" label-width="90px">
+        <el-form-item label="轧辊编号" prop="rollNo">
+          <el-input v-model="rollForm.rollNo" placeholder="请输入轧辊编号" />
+        </el-form-item>
+        <el-form-item label="轧辊类型" prop="rollType">
+          <el-select v-model="rollForm.rollType" placeholder="请选择" style="width:100%">
+            <el-option label="WR (工作辊)" value="WR" />
+            <el-option label="IR (中间辊)" value="IR" />
+            <el-option label="BR (支承辊)" value="BR" />
+          </el-select>
+        </el-form-item>
+        <el-form-item label="使用状态">
+          <el-select v-model="rollForm.status" placeholder="请选择" style="width:100%">
+            <el-option label="Offline"    value="Offline" />
+            <el-option label="Online Use" value="Online Use" />
+            <el-option label="Scrap"      value="Scrap" />
+            <el-option label="Grinding"   value="Grinding" />
+          </el-select>
+        </el-form-item>
+        <el-form-item label="初始辊径(mm)">
+          <el-input-number v-model="rollForm.initialDia" :precision="2" :step="0.01"
+                           :min="0" style="width:100%" />
+        </el-form-item>
+        <el-form-item label="当前辊径(mm)">
+          <el-input-number v-model="rollForm.currentDia" :precision="2" :step="0.01"
+                           :min="0" style="width:100%" />
+        </el-form-item>
+        <el-form-item label="标志位">
+          <el-input v-model="rollForm.flag" placeholder="如 U / D / 0" maxlength="4" />
+        </el-form-item>
+        <el-form-item label="备注">
+          <el-input v-model="rollForm.remark" type="textarea" :rows="2" />
+        </el-form-item>
+      </el-form>
+      <span slot="footer">
+        <el-button size="mini" @click="rollDialogVisible = false">取 消</el-button>
+        <el-button size="mini" type="primary" @click="submitRollForm">保 存</el-button>
+      </span>
+    </el-dialog>
+
+    <!-- ===== Dialog: 更换轧辊 ===== -->
+    <el-dialog title="更换轧辊" :visible.sync="changeDialogVisible"
+               width="640px" append-to-body>
+      <el-form :model="changeForm" ref="changeFormRef" size="mini" label-width="110px">
+        <el-form-item label="换辊状态">
+          <el-select v-model="changeForm.changeStatus" style="width:180px">
+            <el-option label="新辊换上"   value="新辊换上" />
+            <el-option label="磨后换上"   value="磨后换上" />
+            <el-option label="换辊检修"   value="换辊检修" />
+            <el-option label="计划换辊"   value="计划换辊" />
+          </el-select>
+        </el-form-item>
+
+        <div class="change-dialog-grid">
+          <!-- 上支承辊 -->
+          <div class="change-group-header">支承辊</div>
+          <el-form-item label="上支承辊编号">
+            <el-input v-model="changeForm.upperBrNo" placeholder="辊号" />
+          </el-form-item>
+          <el-form-item label="上支承辊径(mm)">
+            <el-input-number v-model="changeForm.upperBrDia" :precision="2" :min="0" style="width:100%" />
+          </el-form-item>
+          <el-form-item label="下支承辊编号">
+            <el-input v-model="changeForm.lowerBrNo" placeholder="辊号" />
+          </el-form-item>
+          <el-form-item label="下支承辊径(mm)">
+            <el-input-number v-model="changeForm.lowerBrDia" :precision="2" :min="0" style="width:100%" />
+          </el-form-item>
+
+          <!-- 中间辊 -->
+          <div class="change-group-header">中间辊</div>
+          <el-form-item label="上中间辊编号">
+            <el-input v-model="changeForm.upperIrNo" placeholder="辊号" />
+          </el-form-item>
+          <el-form-item label="上中间辊径(mm)">
+            <el-input-number v-model="changeForm.upperIrDia" :precision="2" :min="0" style="width:100%" />
+          </el-form-item>
+          <el-form-item label="下中间辊编号">
+            <el-input v-model="changeForm.lowerIrNo" placeholder="辊号" />
+          </el-form-item>
+          <el-form-item label="下中间辊径(mm)">
+            <el-input-number v-model="changeForm.lowerIrDia" :precision="2" :min="0" style="width:100%" />
+          </el-form-item>
+
+          <!-- 工作辊 -->
+          <div class="change-group-header">工作辊</div>
+          <el-form-item label="上工作辊编号">
+            <el-input v-model="changeForm.upperWrNo" placeholder="辊号" />
+          </el-form-item>
+          <el-form-item label="上工作辊径(mm)">
+            <el-input-number v-model="changeForm.upperWrDia" :precision="2" :min="0" style="width:100%" />
+          </el-form-item>
+          <el-form-item label="下工作辊编号">
+            <el-input v-model="changeForm.lowerWrNo" placeholder="辊号" />
+          </el-form-item>
+          <el-form-item label="下工作辊径(mm)">
+            <el-input-number v-model="changeForm.lowerWrDia" :precision="2" :min="0" style="width:100%" />
+          </el-form-item>
+        </div>
+
+        <el-form-item label="备注">
+          <el-input v-model="changeForm.remark" type="textarea" :rows="2" />
+        </el-form-item>
+      </el-form>
+      <span slot="footer">
+        <el-button size="mini" @click="changeDialogVisible = false">取 消</el-button>
+        <el-button size="mini" type="primary" @click="submitChangeForm">确认换辊</el-button>
+      </span>
+    </el-dialog>
+
+  </div>
+</template>
+
+<script>
+import {
+  listRoll, getRoll, addRoll, updateRoll, delRoll,
+  listRollChange, getCurrentRolls, addRollChange
+} from '@/api/mill/roll'
+
+export default {
+  name: 'MillRoll',
+  data() {
+    return {
+      // 换辊数据
+      changeList: [],
+
+      // 当前辊系
+      currentRolls: {},
+
+      // 轧辊库
+      rollList: [],
+      selectedRoll: null,
+
+      // 查询
+      queryField: 'rollNo',
+      queryValue: '',
+
+      // 轧辊添加/修改 dialog
+      rollDialogVisible: false,
+      rollDialogTitle: '轧辊添加',
+      isNewRoll: true,
+      rollForm: {
+        rollId: null,
+        rollNo: '',
+        rollType: 'WR',
+        status: 'Offline',
+        initialDia: 0,
+        currentDia: 0,
+        flag: '',
+        remark: ''
+      },
+      rollRules: {
+        rollNo:   [{ required: true, message: '请输入轧辊编号', trigger: 'blur' }],
+        rollType: [{ required: true, message: '请选择轧辊类型', trigger: 'change' }]
+      },
+
+      // 换辊 dialog
+      changeDialogVisible: false,
+      changeForm: {
+        changeStatus: '新辊换上',
+        upperWrNo: '', upperWrDia: 0,
+        lowerWrNo: '', lowerWrDia: 0,
+        upperIrNo: '', upperIrDia: 0,
+        lowerIrNo: '', lowerIrDia: 0,
+        upperBrNo: '', upperBrDia: 0,
+        lowerBrNo: '', lowerBrDia: 0,
+        remark: ''
+      }
+    }
+  },
+
+  mounted() {
+    this.loadChangeList()
+    this.loadCurrentRolls()
+    this.loadRollList()
+  },
+
+  methods: {
+    // ===== Load data =====
+    loadChangeList() {
+      listRollChange({}).then(res => {
+        this.changeList = res.rows || []
+      })
+    },
+
+    loadCurrentRolls() {
+      getCurrentRolls().then(res => {
+        this.currentRolls = res.data || {}
+      })
+    },
+
+    loadRollList(query) {
+      listRoll(query || {}).then(res => {
+        this.rollList = res.rows || []
+      })
+    },
+
+    // ===== Query =====
+    handleConditionQuery() {
+      const q = {}
+      if (this.queryValue && this.queryValue.trim()) {
+        q[this.queryField] = this.queryValue.trim()
+      }
+      this.loadRollList(q)
+    },
+
+    handleAllQuery() {
+      this.queryValue = ''
+      this.loadRollList({})
+    },
+
+    // ===== Roll table =====
+    handleRollSelect(row) {
+      this.selectedRoll = row || null
+    },
+
+    // ===== Add roll =====
+    openAddDialog() {
+      this.isNewRoll = true
+      this.rollDialogTitle = '轧辊添加'
+      this.rollForm = {
+        rollId: null,
+        rollNo: '',
+        rollType: 'WR',
+        status: 'Offline',
+        initialDia: 0,
+        currentDia: 0,
+        flag: '',
+        remark: ''
+      }
+      this.rollDialogVisible = true
+      this.$nextTick(() => {
+        this.$refs.rollFormRef && this.$refs.rollFormRef.clearValidate()
+      })
+    },
+
+    // ===== Edit roll =====
+    openEditDialog() {
+      if (!this.selectedRoll) return
+      this.isNewRoll = false
+      this.rollDialogTitle = '轧辊修改'
+      this.rollForm = { ...this.selectedRoll }
+      this.rollDialogVisible = true
+      this.$nextTick(() => {
+        this.$refs.rollFormRef && this.$refs.rollFormRef.clearValidate()
+      })
+    },
+
+    submitRollForm() {
+      this.$refs.rollFormRef.validate(valid => {
+        if (!valid) return
+        const api = this.isNewRoll ? addRoll : updateRoll
+        api(this.rollForm).then(() => {
+          this.$message.success('保存成功')
+          this.rollDialogVisible = false
+          this.loadRollList()
+        }).catch(() => {
+          this.$message.error('保存失败，请检查输入')
+        })
+      })
+    },
+
+    // ===== Delete roll =====
+    handleDelete() {
+      if (!this.selectedRoll) return
+      this.$confirm(`确定删除轧辊「${this.selectedRoll.rollNo}」？`, '提示', { type: 'warning' }).then(() => {
+        delRoll(this.selectedRoll.rollId).then(() => {
+          this.$message.success('删除成功')
+          this.selectedRoll = null
+          this.loadRollList()
+        })
+      }).catch(() => {})
+    },
+
+    // ===== Change rolls =====
+    openChangeRollDialog() {
+      // Pre-fill from current rolls
+      const c = this.currentRolls || {}
+      this.changeForm = {
+        changeStatus: '新辊换上',
+        upperWrNo:  c.upperWrNo  || '',
+        upperWrDia: c.upperWrDia != null ? Number(c.upperWrDia) : 0,
+        lowerWrNo:  c.lowerWrNo  || '',
+        lowerWrDia: c.lowerWrDia != null ? Number(c.lowerWrDia) : 0,
+        upperIrNo:  c.upperIrNo  || '',
+        upperIrDia: c.upperIrDia != null ? Number(c.upperIrDia) : 0,
+        lowerIrNo:  c.lowerIrNo  || '',
+        lowerIrDia: c.lowerIrDia != null ? Number(c.lowerIrDia) : 0,
+        upperBrNo:  c.upperBrNo  || '',
+        upperBrDia: c.upperBrDia != null ? Number(c.upperBrDia) : 0,
+        lowerBrNo:  c.lowerBrNo  || '',
+        lowerBrDia: c.lowerBrDia != null ? Number(c.lowerBrDia) : 0,
+        remark: ''
+      }
+      this.changeDialogVisible = true
+    },
+
+    submitChangeForm() {
+      addRollChange(this.changeForm).then(() => {
+        this.$message.success('换辊记录已保存')
+        this.changeDialogVisible = false
+        this.loadChangeList()
+        this.loadCurrentRolls()
+        this.loadRollList()
+      }).catch(() => {
+        this.$message.error('换辊失败，请重试')
+      })
+    },
+
+    // ===== Style helpers =====
+    changeRowClass({ rowIndex }) {
+      return rowIndex === 0 ? 'row-latest' : ''
+    },
+
+    rollTypeClass(type) {
+      return { WR: 'type-wr', IR: 'type-ir', BR: 'type-br' }[type] || ''
+    },
+
+    rollStatusClass(status) {
+      return {
+        'Online Use': 'sts-online',
+        'Offline':    'sts-offline',
+        'Scrap':      'sts-scrap',
+        'Grinding':   'sts-grinding'
+      }[status] || ''
+    }
+  }
+}
+</script>
+
+<style scoped lang="scss">
+.roll-page {
+  display: flex;
+  flex-direction: column;
+  height: calc(100vh - 84px);
+  background: #f0f2f5;
+  padding: 8px 12px;
+  box-sizing: border-box;
+  gap: 8px;
+}
+
+.section-header {
+  background: #1c2b3a;
+  color: #ecf0f1;
+  padding: 6px 12px;
+  font-size: 12px;
+  font-weight: 700;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  flex-shrink: 0;
+  border-radius: 3px 3px 0 0;
+}
+
+/* ===== TOP section ===== */
+.change-section {
+  flex-shrink: 0;
+  height: 35vh;
+  background: #fff;
+  border: 1px solid #dde1e6;
+  border-radius: 3px;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.change-table {
+  ::v-deep .row-latest td {
+    background: #e8f0fb !important;
+    font-weight: 600;
+  }
+}
+
+.status-tag {
+  font-size: 11px;
+  color: #1d4e89;
+  font-weight: 600;
+}
+
+/* ===== BOTTOM section ===== */
+.bottom-section {
+  display: flex;
+  flex: 1;
+  gap: 8px;
+  overflow: hidden;
+  min-height: 0;
+}
+
+/* ===== LEFT: 当前辊系参数 ===== */
+.rolls-panel {
+  width: 280px;
+  flex-shrink: 0;
+  background: #fff;
+  border: 1px solid #dde1e6;
+  border-radius: 3px;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.rolls-body {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  padding: 10px 12px 6px;
+  overflow-y: auto;
+}
+
+.roll-stack {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+}
+
+.roll-row {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+}
+
+.roll-circle {
+  width: 56px;
+  height: 56px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  flex-direction: column;
+  box-shadow: inset 0 2px 4px rgba(0,0,0,0.3), 0 1px 3px rgba(0,0,0,0.2);
+}
+
+.br-circle {
+  background: radial-gradient(circle at 35% 35%, #2e4a6e, #1c2b3a);
+  border: 2px solid #3d6494;
+  width: 60px;
+  height: 60px;
+}
+
+.ir-circle {
+  background: radial-gradient(circle at 35% 35%, #25446a, #182538);
+  border: 2px solid #3a5a86;
+  width: 50px;
+  height: 50px;
+}
+
+.wr-circle {
+  background: radial-gradient(circle at 35% 35%, #1f3a5c, #152232);
+  border: 2px solid #2d4d73;
+  width: 42px;
+  height: 42px;
+}
+
+.roll-abbr {
+  color: #a9bcd0;
+  font-size: 9px;
+  font-weight: 700;
+  text-align: center;
+  line-height: 1.2;
+  padding: 0 2px;
+}
+
+.roll-info {
+  display: flex;
+  flex-direction: column;
+  gap: 3px;
+}
+
+.roll-info-row {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+
+.info-label {
+  font-size: 11px;
+  color: #909399;
+  width: 28px;
+  flex-shrink: 0;
+}
+
+.info-val {
+  font-size: 11px;
+  color: #1d4e89;
+  font-weight: 600;
+  font-family: 'Courier New', monospace;
+  background: #f0f4fa;
+  padding: 1px 6px;
+  border-radius: 2px;
+  border: 1px solid #d0daea;
+  min-width: 80px;
+}
+
+.stack-connector {
+  width: 2px;
+  height: 10px;
+  background: #3d6494;
+  margin-left: 27px;
+}
+
+.nip-line {
+  width: 100%;
+  border-top: 2px dashed #1d4e89;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin: 4px 0;
+  position: relative;
+}
+
+.nip-label {
+  font-size: 10px;
+  color: #1d4e89;
+  background: #fff;
+  padding: 0 6px;
+  position: absolute;
+  right: 0;
+  top: -8px;
+}
+
+.change-time-bar {
+  padding: 8px 0 4px;
+  border-top: 1px solid #e4e7ed;
+  margin-top: 6px;
+  flex-shrink: 0;
+}
+
+.ct-label {
+  font-size: 11px;
+  color: #909399;
+  font-weight: 700;
+}
+
+.ct-val {
+  font-size: 12px;
+  color: #1d4e89;
+  font-weight: 600;
+}
+
+/* ===== RIGHT: 轧辊库数据 ===== */
+.rolldb-panel {
+  flex: 1;
+  background: #fff;
+  border: 1px solid #dde1e6;
+  border-radius: 3px;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  min-width: 0;
+}
+
+.query-bar {
+  padding: 8px 12px 4px;
+  border-bottom: 1px solid #eaeef2;
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 4px;
+  flex-shrink: 0;
+}
+
+.action-bar {
+  padding: 6px 12px;
+  border-bottom: 1px solid #eaeef2;
+  display: flex;
+  gap: 6px;
+  flex-shrink: 0;
+}
+
+.roll-table {
+  flex: 1;
+  ::v-deep .el-table__row.current-row td {
+    background: #e8f0fb !important;
+  }
+}
+
+/* Roll type badges */
+.type-wr { color: #1d4e89; font-weight: 700; }
+.type-ir { color: #5a5a9a; font-weight: 700; }
+.type-br { color: #4a6a8a; font-weight: 700; }
+
+/* Roll status */
+.sts-online  { color: #1d4e89; font-weight: 700; }
+.sts-offline { color: #909399; }
+.sts-scrap   { color: #c0392b; }
+.sts-grinding { color: #d68910; }
+
+/* ===== Change dialog ===== */
+.change-dialog-grid {
+  .change-group-header {
+    font-size: 11px;
+    font-weight: 700;
+    color: #fff;
+    background: #1c2b3a;
+    padding: 3px 10px;
+    border-radius: 2px;
+    margin: 8px 0 6px;
+  }
+}
+</style>
diff --git a/sql/mill_roll_tables.sql b/sql/mill_roll_tables.sql
new file mode 100644
index 00000000..3b6d3260
--- /dev/null
+++ b/sql/mill_roll_tables.sql
@@ -0,0 +1,44 @@
+DROP TABLE IF EXISTS `mill_roll`;
+CREATE TABLE `mill_roll` (
+  `roll_id`     bigint(20)   NOT NULL AUTO_INCREMENT COMMENT '主键',
+  `roll_no`     varchar(20)  NOT NULL                COMMENT '轧辊编号',
+  `roll_type`   char(2)      NOT NULL                COMMENT '轧辊类型 WR/IR/BR',
+  `status`      varchar(20)           DEFAULT 'Offline' COMMENT '使用状态',
+  `initial_dia` decimal(8,2)          DEFAULT 0.00   COMMENT '初始辊径(mm)',
+  `current_dia` decimal(8,2)          DEFAULT 0.00   COMMENT '当前辊径(mm)',
+  `flag`        varchar(4)            DEFAULT ''     COMMENT '标志位 U/D/0等',
+  `create_by`   varchar(64)           DEFAULT ''     COMMENT '创建者',
+  `create_time` datetime              DEFAULT NULL   COMMENT '创建时间',
+  `update_by`   varchar(64)           DEFAULT ''     COMMENT '更新者',
+  `update_time` datetime              DEFAULT NULL   COMMENT '更新时间',
+  `remark`      varchar(500)          DEFAULT NULL   COMMENT '备注',
+  `del_flag`    char(1)      NOT NULL DEFAULT '0'    COMMENT '删除标志 0正常 2删除',
+  PRIMARY KEY (`roll_id`),
+  UNIQUE KEY `uk_roll_no` (`roll_no`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='轧辊库';
+
+DROP TABLE IF EXISTS `mill_roll_change`;
+CREATE TABLE `mill_roll_change` (
+  `change_id`     bigint(20)  NOT NULL AUTO_INCREMENT COMMENT '主键',
+  `change_time`   datetime             DEFAULT NULL   COMMENT '换辊时间',
+  `change_status` varchar(20)          DEFAULT ''     COMMENT '换辊状态',
+  `upper_wr_no`   varchar(20)          DEFAULT ''     COMMENT '上工作辊编号',
+  `upper_wr_dia`  decimal(8,2)         DEFAULT 0.00   COMMENT '上工作辊径(mm)',
+  `lower_wr_no`   varchar(20)          DEFAULT ''     COMMENT '下工作辊编号',
+  `lower_wr_dia`  decimal(8,2)         DEFAULT 0.00   COMMENT '下工作辊径(mm)',
+  `upper_ir_no`   varchar(20)          DEFAULT ''     COMMENT '上中间辊编号',
+  `upper_ir_dia`  decimal(8,2)         DEFAULT 0.00   COMMENT '上中间辊径(mm)',
+  `lower_ir_no`   varchar(20)          DEFAULT ''     COMMENT '下中间辊编号',
+  `lower_ir_dia`  decimal(8,2)         DEFAULT 0.00   COMMENT '下中间辊径(mm)',
+  `upper_br_no`   varchar(20)          DEFAULT ''     COMMENT '上支承辊编号',
+  `upper_br_dia`  decimal(8,2)         DEFAULT 0.00   COMMENT '上支承辊径(mm)',
+  `lower_br_no`   varchar(20)          DEFAULT ''     COMMENT '下支承辊编号',
+  `lower_br_dia`  decimal(8,2)         DEFAULT 0.00   COMMENT '下支承辊径(mm)',
+  `create_by`     varchar(64)          DEFAULT ''     COMMENT '创建者',
+  `create_time`   datetime             DEFAULT NULL   COMMENT '创建时间',
+  `update_by`     varchar(64)          DEFAULT ''     COMMENT '更新者',
+  `update_time`   datetime             DEFAULT NULL   COMMENT '更新时间',
+  `remark`        varchar(500)         DEFAULT NULL   COMMENT '备注',
+  `del_flag`      char(1)     NOT NULL DEFAULT '0'    COMMENT '删除标志 0正常 2删除',
+  PRIMARY KEY (`change_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='换辊记录';