On August 26th, 2011, Delcam (China) Co., Ltd. was invited to participate in the “2011 Automotive Mould Manufacturing Technology Forum†and introduced the latest technology of Delcam in automotive mold manufacturing technology for the guests.
Automotive molds mainly include mold types such as body cover molds and automotive interior parts. Compared with other types of molds, automotive molds are relatively large in size compared to other molds because of their large mold size, complex mold structure, deep core cavity and more CAD surface. The main difficulties are as follows:
1, roughing allowance problem
1) The blanks of the cover mould are mostly returned to the factory after casting, and it is difficult to judge the margin of each area more accurately due to the deformation of the casting and other factors. The roughing usually relies on the rougher measuring points and the CAM programmers write a simple residual margin program to the CNC operator to manually open the rough according to the site conditions. The drawbacks are obvious: low efficiency and low safety factor.
2) Although the plastic parts of the interior parts are not thickened by castings, there are similar problems: many factories hand over the rough low value-added work to the external processing equipment or the low-precision machine tool of the factory. After the roughing process, it is subjected to processes such as stress removal and heat treatment, and then returned to the factory for residual roughing. Due to stress, heat treatment and other processes, large workpieces are deformed, which also brings low efficiency and low safety factor to subsequent roughing.
2, CAM process supplementary surface problem
Due to the complex nature of the mold, most of the automotive molds are based on curved surfaces. How to quickly de-characterize a core cavity of a design department into a model suitable for CAM programmers is a problem.
3. Processing efficiency and safety of deep cavity complex molds
It is well known that deep cavity molds often require 5-axis machining on multi-axis machines, but how to quickly program safe, efficient, and collision-free programs is also a concern for programmers.
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