A high-speed machining tool path generation method based on the involute principle

By using a toolpath generation method based on the involute principle, the problems of sharp corners and cutting force fluctuations in traditional toolpaths during high-speed precision machining are solved. This method achieves equal removal rate and smoothness, improving machining efficiency and quality, and is applicable to fields such as aerospace and automotive molds.

CN122308269APending Publication Date: 2026-06-30ZHEJIANG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-26
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In current high-speed precision machining, traditional toolpaths suffer from problems such as sharp corners, machine tool vibration, cutting force fluctuations, and insufficient removal rate. In particular, the coverage rate in irregular areas is low, making it difficult to balance machining efficiency and quality.

Method used

A toolpath generation method based on the involute principle is adopted. By setting the tool radius, cutting thickness and base circle radius, an involute mathematical model is constructed to generate toolpaths that combine smoothness and equal removal rate. It is suitable for multiple types of regions such as circles and rectangles and adopts a racetrack-shaped path filling strategy.

Benefits of technology

It achieves toolpath smoothness and equal removal rate without additional smoothing treatment, reduces machine tool vibration and tool wear, improves machining efficiency and part surface quality, and is suitable for aerospace, automotive mold and other fields.

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Abstract

This invention discloses a high-speed machining toolpath generation method based on the involute principle, belonging to the field of computer-aided manufacturing technology. The method includes: dividing the workpiece graphic into partitions, determining the center and radius of each partition; determining the involute base circle radius and toolpath phase angle based on the selected tool radius and cutting thickness, thereby obtaining the range of values ​​for the involute development angle; constructing an involute toolpath mathematical model based on the obtained base circle radius, toolpath phase angle, and development angle; and obtaining the set of coordinate points of the involute trajectory that completely covers the region based on this mathematical model, thus obtaining the high-speed machining toolpath. This invention, based on the involute principle, avoids sharp corners in traditional paths, reduces machine tool vibration and frequent acceleration / deceleration, and ensures equal removal rate through a constant normal distance, effectively improving machining efficiency and extending tool life. It has advantages such as simple operation, strong compatibility, and high promotional value.
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