A Springback Compensation Method Based on Fitting Method
A technology of springback compensation and fitting method, applied in the field of stamping, it can solve problems such as difficulty in modifying the springback amount, and achieve the effect of shortening the debugging cycle, eliminating nonlinear problems, and eliminating stamping springback.
Active Publication Date: 2017-08-25
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0006] The purpose of the present invention is to use this technical solution to solve the problem of springback of stamping parts rather than control to reduce the amount of springback, as well as the difficulty of modifying the amount of springback
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[0027] The technical solution of the present invention is described in detail below through the examples, and the following examples are only exemplary and can only be used to explain and illustrate the technical solution of the present invention, rather than being interpreted as a limitation to the technical solution of the present invention.
[0028] Such as figure 1 As shown, the present invention provides a springback compensation method based on the fitting method, comprising the following steps:
[0029] Step 1. Select the product to be processed and establish the mathematical surface of the product; in this embodiment, use the sheet metal forming simulation software DYNAFORM to establish a digital model for the above-mentioned product to be processed to obtain detailed data of the product to be processed.
[0030] Step 2. Select the material used for the product to be processed, and establish the material mechanics model; in this embodiment, the material used for proces...
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The invention relates to a fitting process-based springback compensation method. The method comprises the following steps: selecting a to-be-machined product and establishing a product mathematical molded surface; selecting a material used by the to-be-machined product and establishing a material mechanics model; performing corresponding meshing on the material mechanical model; performing stamping simulation processing on the material mechanical model to obtain mesh data of the material before and after springback simulation; calculating the springback of each node corresponding to the mesh data; determining a compensation point of each node of the product mathematical molded surface, comparing a (Sn-L0) max value with a product form tolerance epsilon, and obtaining an optimal springback compensation molded surface if the requirement that the (Sn-L0) max value is smaller than the product shape tolerance epsilon is met.
Description
technical field [0001] The invention belongs to the technical field of stamping, in particular to a springback compensation method based on a fitting method. Background technique [0002] In the forming process of automobile body parts, wrinkling, cracking and springback are the three main defects. The existence of springback will inevitably cause the shape and size errors of stamping parts, which will affect the quality of stamping parts, including surface quality and assembly performance, etc. . [0003] Usually, the shape accuracy of parts that spring back is very low, which makes the repair and debugging of the mold very difficult, and even leads to the scrapping of the mold. The traditional method to solve the springback problem generally adopts the "trial and error method", which not only consumes financial resources and time, but also can only target simple-shaped covering parts, and relies too much on the experience and skills of operators, resulting in a long mold ...
Claims
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IPC IPC(8): G05B19/18
CPCG05B19/404G05B2219/37584G05B2219/45137
Inventor 徐迎强周昌乐刘程韩永志
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD