Tool Path Generation for Five-Axis Controlled Swarf Machining Considering Machining Error Caused by Tool Axis Change

Tatsuki Ono and Koichi MORISHIGE

Proceedings of The 20th International Conference on Precision Engineering (ICPE 2024), OS04-02 (Sendai, Japan, October 23-26, 2024)

Five-axis controlled swarf machining using a straight tool can reduce machining time. Five-axis controlled machining causes machining errors because the tool path deviates from the ideal trajectory due to the influence of the rotary axis. Therefore, the tool path must be interpolated to reduce the machining error below a target tolerance. Tool center point (TCP) control is widely used as a tool path interpolation method for ball end mills. However, TCP which interpolates only the tool tip point cannot guarantee machining accuracy in swarf machining. Swarf machining is required to consider machining errors due to changes in the tool axis at the interpolation point. This study developed a tool path interpolation method referring to cutting points for five-axis controlled swarf machining. The proposed method generates appropriate tool command points and tool postures at the interpolation points. Machining simulations confirm that the proposed method improves machining accuracy.

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