Sheet metal stamping die | sheet metal stamping die manufacturer | sheet metal stamping die processing | sheet metal stamping die manufacturing-NJPE
The Mold Technology Product of the end cover parts of the automobile joint pipe box has a large market demand for the end cover of the automobile joint pipe box, which is used by every gas car and requires very high precision in size. After more than one year of repair and verification, the product has met the customer's drawing requirements and the mold is shipped to the client.
The mold has been produced by the well-known enterprise Valeo, a manufacturer of gas vehicle parts, and the effect is stable. Product map, prior art: 1. The flatness of the product is required to be 0. Within 05mm, the requirement is very high.
According to the existing template hard top plastic scheme does not meet the requirements. 2.
The thinning rate of the product is required to be more than 70% of the material thickness, which cannot meet the requirements according to the existing one-step stretching scheme.
In the process of stretch forming, the thinning rate needs to ensure innovative technologies: 1.
The second drawing process is used to ensure the current situation of product flatness: for such irregular drawing products, the flatness of the formed bottom surface is difficult to ensure, and the flatness after drawing by the traditional mold process is 0.
About 5, the cutting and shaping effect is not good, and the innovation point that cannot guarantee the high plane degree of such parts is: CAE analysis, modification of process, drawing to increase the bottom R angle, and then R angle shaping to eliminate internal stress, finally, the plane is drawn twice to release the stress on the bottom surface and flow the stress in the material to ensure the flatness of the product forming position is 0.
There are only one or two domestic high requirements of 05. This mold won the award in Dongguan Changan Cup in 17 years. The molds of such high-precision products are still continuously produced and the effect is stable. Difficulties: 1 product flatness requirement is 0.
Within, the requirement is very high 2 the welding surface is very high, mainly to ensure that the welding cannot leak 3 the thinning rate is very high, it mainly affects the service life of the product. 4. Stretching and trimming ensure the R concentricity of the pipe. Die diagram NJPE-
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