Development and application of parametric design system for solid end mills based on Open CASCADE

The secondary development can realize the integration of commercial CAD and CAM/CAE software and has been widely used in the design of cutting tools. However, with the development of cutting tools design towards system integration, the integration effect cannot meet the needs of current tool design due to factors such as kernel and interface. Based on the independent semi open source modeling kernel Open CASCADE, this paper realizes the parametric design of solid end mills. The parametric design system of solid end mills is established by using Python as the underlying language and Python OCC. The system can generate data files, 2D drawings, and 3D models conforming to ISO 13399 standard and realize the cloud storage function of model data. The generated tool model data can be used for finite element simulation of cutting process, NC programming, and guiding tool manufacturing. Based on the established system, the centroid optimization of the imbalance characteristics of the variable pitch and variable helix end mill is carried out, which improves the dynamic balance of this type of cutter and provides an important reference value for the design of this type of cutter.