描述
一、产品定位与核心优势
1.品牌与产品线归属
KUKA（库卡）：
RDW203是KUKA品牌旗下工业机器人配套设备系列中的一款中空轴焊接旋转模块（Rotary Drive Unit），专为弧焊、激光焊接等自动化焊接工艺设计，可与KUKA KR C4/KR C5等控制器兼容，实现高精度、高效率的焊接作业。
核心优势：
中空轴设计：内部集成电缆/气管通道，减少外部管线缠绕，提升机器人运动灵活性。
高扭矩输出：最大扭矩203 Nm，满足厚板焊接、高负载工况需求。
高重复定位精度：±0.05°，确保焊缝一致性，降低焊接缺陷率。
模块化结构：支持快速更换工装夹具，适应多品种、小批量生产。
2.典型应用场景
汽车制造：
车身焊接：用于车门、车顶、底盘等部件的弧焊，替代传统固定工装，提升生产节拍。
座椅骨架焊接：通过旋转模块实现360°无死角焊接，避免人工翻转工件。
金属加工：
重型结构件焊接：如工程机械（挖掘机、起重机）的臂架、支腿焊接，承受高负载扭矩。
压力容器焊接：用于筒体、封头的环缝焊接，确保焊缝均匀性。
能源装备：
风电塔筒焊接：通过旋转模块驱动工件旋转，配合机器人直线运动，实现长焊缝高效焊接。
管道焊接：用于石油、天然气管道的现场焊接，适应不同管径的快速切换。
二、技术参数详解
1.基础规格
参数类别规格详情
型号KUKA RDW203
系列KUKA Rotary Drive Unit（旋转驱动单元）
安装方式法兰式安装（兼容KUKA机器人末端法兰）
驱动方式伺服电机驱动（交流伺服）
传动结构高精度行星减速机+谐波减速器（双级减速）
中空轴直径≥80 mm（可容纳电缆、气管、激光光纤等）
2.性能参数
参数类别规格详情
额定扭矩203 Nm（连续输出）
峰值扭矩406 Nm（短时过载，≤3秒）
最大转速180 rpm（空载）
重复定位精度±0.05°（双向重复）
反向间隙≤1 arcmin（≤0.0167°）
传动效率≥90%（行星减速机+谐波减速器复合结构）
3.电气参数
参数类别规格详情
电源要求24 VDC（±10%），功耗≤500 W（满载）
控制接口KUKA KR C4/KR C5控制器专用接口（支持EtherCAT、PROFINET实时通信）
编码器分辨率20位（1,048,576 pulses/rev）
防护等级IP65（防尘、防水溅）
4.环境与可靠性
参数类别规格详情
工作温度0℃~50℃（工业级）
存储温度-20℃~70℃
湿度5~95%RH（无凝露）
振动抗性5~500 Hz，2 g（随机振动，IEC 60068-2-64）
冲击抗性15 g，11 ms（半正弦波，IEC 60068-2-27）
MTBF>50,000小时（25℃恒定负载，Telcordia SR-332标准）
认证标准CE、UL 508A、ISO 10218-1（机器人安全标准）
三、功能特性解析
1.高精度运动控制
双级减速结构：
行星减速机提供高刚性、大扭矩传输；
谐波减速器消除反向间隙，实现微米级定位精度。
全闭环控制：
通过高分辨率编码器实时反馈旋转角度，结合KUKA控制器算法补偿机械误差。
动态响应优化：
支持加速度/减速度动态调整，适应高速焊接与精密点焊切换。
2.中空轴集成设计
管线保护：
电缆/气管从中空轴内部穿过，避免与工件或夹具干涉，延长管线使用寿命。
快速换产：
更换不同规格工装时，无需重新布置外部管线，减少停机时间。
清洁生产：
减少焊接飞溅附着，降低管线清洁维护频率。
1.Product positioning and core advantages
1.Brand and product line ownership
KUKA:
RDW203 is a hollow shaft welding rotary drive unit in the KUKA brand’s industrial robot supporting equipment series.It is designed for automated welding processes such as arc welding and laser welding.It is compatible with controllers such as KUKA KR C4/KR C5 to achieve high-precision and high-efficiency welding operations.
Core advantages:
Hollow shaft design:internal integrated cable/air pipe channel to reduce external pipeline entanglement and improve robot movement flexibility.
High torque output:maximum torque 203 Nm,meeting the requirements of thick plate welding and high load conditions.
High repeatability positioning accuracy:±0.05°,ensuring weld consistency and reducing welding defect rate.
Modular structure:supports rapid replacement of fixtures and adapts to multi-variety and small batch production.
2.Typical application scenarios
Automobile manufacturing:
Body welding:used for arc welding of doors,roofs,chassis and other parts,replacing traditional fixed tooling and improving production rhythm.
Seat frame welding:360°no-dead-angle welding is achieved through the rotating module to avoid manual flipping of the workpiece.
Metal processing:
Heavy structural parts welding:such as the boom and leg welding of construction machinery(excavators,cranes),which withstand high load torque.
Pressure vessel welding:used for circumferential seam welding of cylinders and heads to ensure uniformity of welds.
Energy equipment:
Wind power tower welding:the rotating module drives the workpiece to rotate,and the robot moves linearly to achieve efficient welding of long welds.
Pipeline welding:used for on-site welding of oil and gas pipelines,adapting to the rapid switching of different pipe diameters.
2.Technical Parameters
1.Basic Specifications
Parameter Category Specification Details
Model KUKA RDW203
Series KUKA Rotary Drive Unit
Installation Flange Installation(Compatible with KUKA Robot End Flange)
Drive Mode Servo Motor Drive(AC Servo)
Transmission Structure High-precision Planetary Reducer+Harmonic Reducer(Double-stage Reducer)
Hollow Shaft Diameter≥80 mm(Can accommodate cables,air pipes,laser optical fibers,etc.)
2.Performance Parameters
Parameter Category Specification Details
Rated Torque 203 Nm(Continuous Output)
Peak Torque 406 Nm(Short-term Overload,≤3 seconds)
Maximum Speed 180 rpm(No Load)
Repeat Positioning Accuracy±0.05°(Bidirectional Repeat)
Reverse Clearance≤1 arcmin(≤0.0167°)
Transmission Efficiency≥90%(Planetary Reducer+Harmonic Reducer Composite Structure)
3.Electrical Parameters
Parameter Category Specification Details
Power Requirements 24 VDC(±10%),power consumption≤500 W(full load)
Control interface KUKA KR C4/KR C5 controller dedicated interface(supports EtherCAT,PROFINET real-time communication)
Encoder resolution 20 bits(1,048,576 pulses/rev)
Protection level IP65(dustproof and splashproof)
4.Environment and reliability
Parameter category Specification details
Operating temperature 0℃~50℃(industrial grade)
Storage temperature-20℃~70℃
Humidity 5~95%RH(non-condensing)
Vibration resistance 5~500 Hz,2 g(random vibration,IEC 60068-2-64)
Shock resistance 15 g,11 ms(half-sine wave,IEC 60068-2-27)
MTBF>50,000 hours(25℃constant load,Telcordia SR-332 standard)
Certification standards CE,UL 508A,ISO 10218-1(Robot Safety Standard)
III.Functional Characteristics Analysis
1.High-precision motion control
Dual-stage reduction structure:
Planetary reducer provides high rigidity and high torque transmission;
Harmonic reducer eliminates backlash and achieves micron-level positioning accuracy.
Fully closed-loop control:
Real-time feedback of rotation angle through high-resolution encoder,combined with KUKA controller algorithm to compensate mechanical error.
Dynamic response optimization:
Supports dynamic adjustment of acceleration/deceleration to adapt to high-speed welding and precision spot welding switching.
2.Hollow shaft integrated design
Pipeline protection:
Cables/air pipes pass through the inside of the hollow shaft to avoid interference with workpieces or fixtures,extending the service life of the pipeline.
Quick production change:
When changing different specifications of tooling,there is no need to rearrange external pipelines,reducing downtime.
Clean production:
Reduce welding spatter adhesion and reduce the frequency of pipeline cleaning and maintenance.
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