高温转向节锻件自动化三维测量与精度检测技术

Automatic three-dimensional measurement and precision inspection technology for high temperature steering knuckle forgings

阐释了一种高温锻件自动化三维测量与精度检测技术,通过工业机器人驱动面结构光三维测量设备从多个视角对高温转向节锻件进行测量,并将不同视角测量的数据统一到同一坐标系下,形成完整数据,提取关键尺寸,最终进行趋势分析。提出了一种双重滤波方法解决了高温物体表面图像高质量获取和相机热防护的问题;通过一种模型分区的可行域筛选方法解决了复杂零部件的测量视点规划问题;通过基于机器人重复性的无标志点数据拼合方法解决了高温物体测量数据的拼合问题。提出的关键技术在转向节锻造工厂实现了实施应用,并通过实验验证了相关方法的可行性和可靠性。

An automatic three-dimensional measurement and precision inspection technology for high-temperature forgings was introduced.The steering knuckle forgings were measured from multiple views by industrial robot-driven surface structured light equipment. The measured data in different perspectives were unified into the same coordinate system to obtain the complete results,from which the key dimensions were extracted for the trend analysis. A dual filtering method was proposed to solve the problem of high-quality image acquisition for high temperature objects and camera thermal protection. Besides,the viewpoint planning for complex objects was addressed by a feasible partition screening method with model partitioning. Then,using the robot-repeatability-based data fusion approach,the measurement data of high temperature objects was aligned. The developed key technologies were implemented into production of the steering knuckle forging,and the feasibility and reliability of the related methods were experimentally verified.