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对几何不准确性的系统分析及其在机器人制造中的贡献因素
Sahil Bharti1, Eldho Paul1, Anandu Uthaman1,2
1Indian Institute of Technology Madras, Mechanical Engineering, Chennai, 600036, India.
Scientific reports
|August 31, 2024
概括
机器人辅助增量板材成型 (机器人成型) 提供了灵活性,但由于机器合规性,其准确性较低. 这项研究量化了材料反弹,工具偏移和机器人刚度的错误,以提高几何精度.
科学领域:
- 制造业 工程 制造工程
- 机器人技术 机器人技术 机器人技术
- 材料科学 材料科学 材料科学
背景情况:
- 渐进型板材成型是复杂部件的多功能无压工艺.
- 机器人辅助的增量表格成型 (机器人成型) 提高了灵活性,但由于操纵器的合规性,它面临准确性挑战.
- 机器框架和工具的刚性对机器成型中的成型元件的精度有很大影响.
研究的目的:
- 开发一种方法来系统地分析基于机器人的增量板材成型中的几何错误.
- 量化材料弹的贡献,工具/工具持有器的偏移,以及机器对形状偏差的符合性.
- 为了提高机器人成型过程的准确性和可靠性.
主要方法:
- 在CNC机器上进行实验试验,以估计特定配置文件的材料回弹率.
- 有限元模拟以确定工具和工具持有器的偏移.
- 虚拟关节模型用于分析关节硬度和估计机器人笛卡尔硬度,用于路径偏差预测.
主要成果:
- 使用CNC试验估计了材料回弹.
- 工具和工具持有器的曲率通过FE模拟量化.
- 使用虚拟关节模型预测了机器人的卡特西安刚度和路径偏差,并确定了对整体错误的比例贡献.
结论:
- 建立了一个系统的方法来分析机器人成型中的几何错误.
- 该研究量化了材料反弹,工具偏移和机器符合性对形状准确性的影响.
- 了解和量化这些错误来源对于提高机器人辅助增量板材成型的精度至关重要.
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