Subregional Process Method With Variable Parameters Based on a Potential Field in Slow Tool Servo Machining for a Complex Curved Surface
Subregional Process Method With Variable Parameters Based on a Potential Field in Slow Tool Servo Machining for a Complex Curved Surface
复制标题
DOI：
10.1115/1.4052214
复制
发表时间：
2022
影响因子：
4
通讯作者：
Jian-wei Ma;L. Xiao;Zhenyuan Jia;Li Guanlin;Tao Ye;Wei Liu
中科院分区：
文献类型：
--
作者：
Jian-wei Ma;L. Xiao;Zhenyuan Jia;Li Guanlin;Tao Ye;Wei Liu
慢速刀具伺服精密车削在现代先进制造中发挥着越来越重要的作用。然而，对于具有局部复杂几何特征的曲面，传统的整体加工方法难以提高加工质量。为此，提出了一种STS中的分区域处理方法。首先，采用连续的等位线表示局部几何特征;因此，建立了一个势场，其中表面可以被划分为子区域。然后，由该域生成变进给速度的分区刀具路径，并进行拼接，以保证X轴进给运动的稳定性。最后，考虑Z轴进给运动的稳定性，对曲面进行细分，进行主轴变速规划。结果表明，与传统方法相比，该方法的轮廓算术平均误差降低了31.58%，加工时间缩短了41.00%。实践证明，这种新的加工方法有效地提高了加工质量和效率.
Precision turning with slow tool servo (STS) plays an increasingly important role in advanced manufacturing nowadays. However, it is difficult to promote machining quality for surfaces with local complex geometric features by the conventional global machining method. Hence, a subregional processing method in STS is proposed. First, the continuous equipotential line is taken to express the local geometric feature. Thus, a potential field is built, where the surface could be divided into subregions. Then, a subregional toolpath with variable feed rates is generated by the field and stitched to ensure the feeding motion stability of X-axis. Finally, the surface is subdivided for variable spindle speed planning, considering the feeding motion stability of Z-axis. It is found that the profile arithmetic average error reduces by 31.58% with the proposed method compared with that with the conventional method and the machining time is shortened by 41.00%. Thus, it is proved that the new processing method effectively promotes machining quality and efficiency.