Method for planning path of helical milling tool efficiently for mold cavity based on contour central axis

• Main Authors: WANG XIAOSUN, LI XIAOYONG, WU SHIJING, HUANG NUODI, HU JICAI
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2018
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention provides a method for planning the path of a helical milling tool efficiently for a mold cavity based on a contour central axis, and the method comprises the steps: calculating a tool path at each layer, carrying out the cutting of a central axis loop, cutting and calculating discs in the actual radial directions of all points, and taking the envelope curves of the discs are the toolpaths of all layers; calculating the path of the helical milling tool, solving the linear difference of two adjacent tool paths, enabling the two adjacent tool paths to be smoothly connected, and obtaining the path of the helical milling tool. The method integrates the advantages of the path of the helical milling tool and a conventional tool path, and the calculated and obtained tool path is smooth. Moreover, the total length of the tool is short, and the method is suitable for the processing of mold cavities in various shapes. 本发明提供种基于轮廓中轴线的型腔高效螺旋铣削刀具路径规划方法，首先，计算各层刀具路径，通过对中轴线回路进行裁剪，由各点实际径向切宽计算圆盘，以这些圆盘的包络曲线作为各层刀具路径；