Abstract
Surface roughness is one of the most important evaluation indexes in machine cutting. In order to analyze how the tool path affects the roughness of the surface after milling, series of simulations are implemented in MasterCAM. We set up the same processing conditions with same parameters such as speed, material and feed rate etc. in these simulations, but different processing paths are used. We choose three paths: the parallel milling along the X-Y axis direction, the parallel milling along the Z-X or Z-Y axis direction and the streamline processing in the simulations. At the same time, end miller, arc miller and ball miller are respectively selected in the software. So there are totally 9 simulations of the milling process that are performed. Then the experimental cutting processes are performed correspondingly and the surface roughness and the accuracy are measured. The results show that the milling effect of the arc is better and the waste is minimal in the parallel milling along the Z-X or Z-Y axis direction with the end mills.
Highlights
The processing of the injection mold needs milling, grinding, EDM, and light etching process, etc., but the CNC milling process is still the fastest and the most economical way of achieving the main structure and shape of the molds
Lots of papers are focusing on the milling processing of the injection mold, for example, many researches are devoted to studying the relations between the processing quality and the machining speed and feed rate [1,2,3], and many studies are devoted to analyzing the difference of the dry milling and wet milling, which can markedly affect the processing quality [4], and many researches are focusing on studying that the different processing path can shorten the processing time and markedly increase the processing efficiency [5]
This paper focuses on the finish milling of the mold surfaces, the comprehensive analysis and comparison of the surface milling by using different processing paths that are performed to achieve the high precision and the machining quality
Summary
The processing of the injection mold needs milling, grinding, EDM, and light etching process, etc., but the CNC milling process is still the fastest and the most economical way of achieving the main structure and shape of the molds. These studies have not performed more comprehensive analysis about the tool path’s effect on the mold processing. This paper focuses on the finish milling of the mold surfaces, the comprehensive analysis and comparison of the surface milling by using different processing paths that are performed to achieve the high precision and the machining quality. The analysis and comparison realized by experimental machining and measurement can prove that the high precision and quality can be obtained in the injection mold milling
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