Die profile local springback compensation method based on elliptical surface mapping drive
A mold surface and springback compensation technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inability to use molds, local dimensions of parts that do not meet tolerance requirements, and poor surface quality, etc., to achieve Reduce the amount of training, improve the efficiency of local springback compensation, and ensure the effect of local springback compensation accuracy
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Embodiment 1
[0054] The product model of the side wall and rear reinforcement plate of a certain car model is as follows: Figure 4 As shown, the product is a left-right symmetrical piece, and the stamping process is designed as one mold and two pieces. In order to evaluate the dimensional accuracy of the product, the simulation is carried out in the AutoForm simulation software according to the content of the stamping process. Figure 5 Shown is the springback distribution cloud map of the product. The springback result shows that the local springback value of the product exceeds the tolerance range. The tolerance requirement is ±0.5mm. Springback compensation is required. The steps are as follows:
[0055] The first step is to obtain the cloud map of the local springback distribution of the part, and the sub-steps are:
[0056] ① Export the springback parts from AutoForm software in stl file format;
[0057] ② Import the stl file into the Digitized Shape Editor module of CATIA software,...
Embodiment 2
[0077] Figure 14 Shown is the product model of the door reinforcement plate of a certain car model. The product is a left-right symmetrical part. The stamping process is designed as one mold and two pieces. The stamping of the product is completed by using a 3-sequence mold. After the mold is qualified, the first round of stamping test is carried out. Figure 15 As shown, the optical inspection found that the local size of the trial punched part exceeded the tolerance range, and it is necessary to perform springback compensation on the surface of the current drawing convex model. The following takes the negative springback area at the end of the part as an example to perform local springback compensation. The steps are as follows :
[0078] The first step is to obtain the cloud map of the local springback distribution of the part, and the sub-steps are:
[0079] ① Export the point cloud data obtained by optical inspection in stl file format;
[0080] ②Import the stl file in...
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