How to improve the processing accuracy and efficiency of mold parts?
How to improve the processing accuracy and efficiency of mold parts has always been a key concern of mold companies. To improve the final processing accuracy and efficiency of mold parts, in addition to considering the reasons of the CNC machine tool itself, it should also be carried out from several aspects such as reasonable programming skills, processing route settings, tool selection and correct installation, and reasonable selection of cutting amounts. Considering. Programming skills
CNC programming is the most basic work of CNC machining. The quality of the workpiece processing program directly affects the final processing accuracy and efficiency of the machine tool. You can start from many aspects such as clever use of inherent programs, flexible use of main programs and subroutines, and reduction of accumulated errors in the CNC system.
1. Flexible use of main programs and subprograms can not only ensure the consistency of processing dimensions, but also improve processing efficiency.
2. Reduce the cumulative error of the CNC system. When programming, try to use absolute programming so that each program segment is based on the origin of the workpiece. This can reduce the cumulative error of the CNC system and ensure machining accuracy.
Properly set up processing routes Reasonable setting of processing routes and processing sequences is an important basis for optimizing workpiece processing programming. It can be considered from the aspects of feed method and processing trajectory.
1. Optimize the cutting method. When performing CNC milling of the workpiece, the appropriate feed method must be selected based on the technological requirements of the workpiece to ensure the cutting accuracy and processing efficiency of the workpiece.
2. Select the appropriate processing trajectory. When milling the outer contour of a flat workpiece, try to cut in and out along the extension line of the contour curve to avoid knife marks at the intersection. At the same time, in milling processing, down milling or up milling should be selected according to the conditions of the workpiece.
Tool selection and correct installation
Whether it is CNC machining or ordinary machining, the tool directly acts on the workpiece, so its selection and installation are the most important factors in the machining accuracy and surface quality of the workpiece. The general principles for tool selection are: easy installation and adjustment, good rigidity, high durability and precision.
Reasonable choice of cutting amount
The determination of cutting amount is an important part of CNC machining technology and has an important impact on workpiece machining accuracy, machining efficiency and tool wear. The basic selection principle of cutting amount is: when the stiffness allows, a larger cutting depth is used for roughing to reduce the number of tool passes and improve workpiece productivity; generally a smaller cutting depth is used for finishing to obtain a higher Surface Quality.