三菱FX5U · 电容笔模组全自动精密装配系统
Mitsubishi FX5U · Stylus Module Automated Assembly System
本项目旨在解决电容笔核心缓冲组件的人工组装瓶颈。该组件由于体积极其微小（整体不足 5mm），人工组装时不仅效率极低（约 200pcs/h），且由于零件自重轻、弹簧易纠缠，次品率长期维持在 10% 以上。我们通过定制化的自动选料机构结合 **Mitsubishi FX5U** 平台，实现了从零件供料到精密锁附的全自动化作业。
This system automates the assembly of stylus buffer modules (sub-5mm size). By integrating custom feeding mechanisms with the Mitsubishi FX5U platform, we improved efficiency by 5.2x and reduced the high defect rates associated with manual assembly.Cycle: 3.5s // YYFD PRECISION
02. 组件特征分析 / Component Analysis
锁附螺帽 (Screw)
Spec / 规格
M2.5 × P0.45
Length / 长度
2.77 +0/-0.05mm
Mat'l / 材质
POM (TENAC)
Challenge / 难点
精密扭力控制
Precision Torque Control
精密弹簧 (Spring)
Length / 自由长
4.60 +0.3/-0.1mm
Wire Φ / 线径
0.25mm
Mat'l / 材质
SUS-301 (HT)
Challenge / 难点
上料纠缠
Feeding Entanglement
按压柱 (Core)
Total L / 总长
4.34 ± 0.02mm
Head R / 球头
R0.575 (Φ1.15)
Mat'l / 材质
SUS-304
Challenge / 难点
尺寸极小
Micro-size Detection
缓冲支架 (Bracket)
Thread / 螺纹
M2.5 × 0.45-6H
Depth / 牙深
3.0 mm (Min)
Mat'l / 材质
POM (DURACOM)
Challenge / 难点
重量极轻
Ultra-lightweight Handling
03. 工位技术详解 / Station Details
微型零件选料与二级分发供料
Micro-Component Feeding & ESD Control
传统振动盘在处理微小轻质零件时，常由于静电导致无法出料。我们采用了“高频振动板+气体辅助轨道”的设计。利用微气帘使零件处于半悬浮状态，彻底消除静电吸附。
Static electricity often hinders the output of micro-parts in conventional feeders. Our system features high-frequency vibration with air-assisted rails. A micro air curtain creates a semi-floating state, completely neutralizing electrostatic suction.
- Sensor Response / 传感器响应：< 2ms
- Feed Rate / 供料频率：120pcs/min
- ESD Suppression / 静电抑制：Active Air Curtain
微型定向件精密取料与植入
Precision Picking & Directional Insertion
按压柱（铁芯）尺寸极小且需严格区分装配方向，对供料系统的稳定性和取料精度挑战极大。我们集成 研磨级高精度丝杆模组，并利用 三菱 FX5U 的高速脉冲控制，实现了微米级的定位，确保 0.025mm 的配合间隙下无损组装。
The iron core's micro-size and orientation requirements pose significant challenges. By integrating Grinding-grade Ball Screws and Mitsubishi FX5U pulse control, we achieved micron-level positioning for damage-free assembly within a 0.025mm clearance.
- Control System / 电控系统：Mitsubishi FX5U
- Linear Drive / 机械传动：Grinding Ball Screw
- Orientation / 定向精度：High-speed Vision/Mech
- Pickup Tol. / 取料公差：±0.01mm
微细弹簧离心分选与柔性供料
Centrifugal Separation & Flexible Feeding
精密弹簧（Φ2.5mm）因高细长比，在常规振动盘中极易相互纠缠导致堵料。我们采用 定制化离心式分选机构，通过高速旋转产生的离心力物理打散纠缠簇，配合高频振动底盘实现单枚有序输出。
Micro-springs (Φ2.5mm) tangle easily in standard feeders. We utilize a **Custom Centrifugal Separator** that uses rotational force to physically decouple spring clusters, paired with high-frequency vibratory tracks for single-item sequential output.
Method: Centrifugal De-tangling
Speed: 45 - 60 PPM (Stable)
Separation: 99.5% De-cluster Rate
Frequency: Adjustable Ultrasonic
闭环扭力锁附与在线检测
Closed-loop Torque Fastening
POM 材质极易“滑牙”，对锁附精度要求极高。系统切换至 伺服扭矩模式 (Torque Mode)，实现对输出转矩的毫秒级精准掌控。通过实时监测 转矩反馈值 与 旋入脉冲总数 的双重闭环逻辑，确保每一颗螺丝锁附达到 100% 在线合格判定。
Due to POM's tendency to strip threads, the system switches to **Servo Torque Mode** for millisecond-level precision control. By integrating a dual closed-loop logic of **real-time torque feedback** and **total pulse count**, we guarantee 100% online qualification for every fastening process.
- Final Torque / 截止扭矩：0.08 ±0.005 N·m
- Depth Tol / 深度公差：±0.2mm
- Pass Rate / 合格率：> 98%
04. 软件与电控逻辑架构 / Software Architecture
基于 三菱 FX5U的高速脉冲控制。系统深度集成复杂逻辑算法，在实现微米级定位的同时，确保多工位间的高效协同与任务调度。
FX5U-based high-speed control integrating complex algorithms for micron-level positioning and seamless multi-station orchestration.
自定义工程级界面。实时显示 UPH、合格率走势、以及每个零件的供料状态，具备详尽的历史追踪。
Custom HMI displaying real-time UPH, yield trends, and individual component status with historical tracking.
完备的逻辑自诊断。传感器超时或压力过载均会在 5ms 内触发停机，最大限度保护精密模具。
Full self-diagnosis system. Sensor timeouts or pressure overloads trigger 1ms shutdown to protect micro-tooling.
05. 效能总结 / Final Stats
该项目的成功交付，标志着精密笔芯组装正式迈入“数字化全自动”时代。
"Achieved 100% production data traceability via FX5U data logging, eliminating the need for 4 skilled operators."
通过 FX5U 导出的数据实现了生产过程 100% 可溯源，替代了 4 名熟练人工。