Identification and looping tool path generation for removing residual areas left by pocket roughing

Abstract

For pocket with complex geometry shape, lots of residuals will be left after pocket roughing. These uncut regions always are around sharp corners, bottlenecks, and sidewalls with small areas and soft edges. Additionally, as most of the stock material has been removed, the thin wall between two adjacent pockets tends to deform when machining the residuals. Thus, certain technological requirements such as starting from the soft edge, retaining down-milling, and keeping constant feed rate are needed to machine the unmachined materials. However, little research has been carried out on this problem. In this paper, to remove the various uncut areas left by the pocket roughing, residual regions are identified first by the rolling disk motion method. Then, looping tool paths are designed and computed for corner, bottleneck, and sidewall residuals respectively. The proposed tool path satisfies downmilling, G1 continuous, and progressive radial depth of cut with consideration of the soft edge. Finally, an example is rendered to validate that the advised algorithm can identify the remained areas correctly, and the generated tool path meets the special requirements of clean-up regions machining.

In-Process Measurement for the Process Control of the Real-Time Manufacturing of Tapered Roller Bearings

“…As stated before, process optimization and online monitoring and control are key factors for improving efficiency and quality in machining [ 19 ]. With the development of intelligent machining, the optimization of cutting process configuration during actual production has become more accessible, and optimizing the volume of removed metal by adjusting the grinding time for each part can decrease the process time and improve tool life [ 20 , 21 ]. Finally, the grinding machine control system can receive the measurement results of the machined part as feedback information for process verification.…”