Inlay type combined die structure

Abstract

The invention relates to an inlay type combined die structure comprising a die sleeve, wherein a back pad is arranged in the die sleeve; a die body is arrange on the back pad in the die sleeve; a forming groove is arranged on the die body; an inlaid piece slot is arranged in the forming groove; an inlaid piece is arranged in the inlaid piece slot; the upper forming surface of the forming groove is shaped like an arc; the inlaid piece is of a + shape or a linear shape or a +- shape; the inlaid piece slot is a through hole on the die body; the die body is made from a material with good toughness; and the inlaid piece is made from an abrasion-proof material. By adopting the structure, the inlay type is adopted to replace an integral type, so that stress concentration is avoided and the phenomenon that root is easy to break off does not happen; the mold is processed by adopting wire cutting, so that the processing is easy, the polishing can be carried out, the roughness requirement of the mold can be guaranteed, the service life of the mold is prolonged and the factory cost of products is reduced.

Description

technical field [0001] The invention relates to a mold structure, in particular to an inlaid combined die structure. Background technique [0002] At present, in the production of cross-slotted products, medium-temperature extrusion dies and integral cross-slotted dies processed by EDM are generally used, especially when the cold heading processing material is SUS316L stainless steel cross oblate head square neck bolts. No matter how good the material is, the life of the mold can only process about 1500 pieces; because the stress is concentrated at the root of the mold, the cross block is easy to break; the material with good toughness is selected for the mold, and it is not wear-resistant; the material with high hardness is easy to explode; the mold The whole is not easy to process, not easy to polish, and the roughness cannot be guaranteed; when the electric spark is processing the mold, the electrode is easy to damage, resulting in the R angle of the mold, and the produce...

AI Technical Summary

Problems solved by technology

[0002] At present, in the production of cross-slotted products, medium-temperature extrusion dies and integral cross-slotted dies processed by EDM are generally used, especially when the cold heading processing material is SUS316L stainless steel cross oblate head square neck bolts. No matter how good the material is, the life of the mold can only process about 1500 pieces; because the stress is concentrated at the root of the mold, the cross block is easy to break; the material with good toughness is selected for the mold, and it is not wear-resistant; the material with high hardness is easy to explode; the mold The whole is not easy to process, not easy to polish, and the roughness cannot be guaranteed; when the electric spark is processing the mold, the electrode is easy to damage, resulting in the R angle of the mold, and the produced product has an R angle, which does not meet the requirements. At this time, if the fitter is used It is easy to cause the mold to be scrapped if the mold is repaired

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