Small hole punching mechanism

Abstract

The invention relates to a small hole punching mechanism which comprises an upper die and a lower die, wherein the upper die comprises an upper clamping plate, a stopping plate, a stripping plate anda punching device; and the punching device comprises a first punching head clamping block, a second punching head clamping block, a punching head, a first stripping plate insert and a second strippingplate insert. The small hole punching mechanism provided by the invention has the beneficial effects that by adoption of the first punching head clamping block, the second punching head clamping block, the first stripping plate insert and the second stripping plate insert, the length of the punching head can be effectively shortened, the strength of the punching head can be improved, and the punching head breakage frequency can be reduced; the machining efficiency is high, the punching head can be directly replaced on a punching machine, the replacement time is short, the punching head need not be frequently replaced, the service life of the punching head is long, the waste of resources can be avoided, and the machining cost can be reduced; and the phenomenon that the punching of severalproducts is omitted can be avoided, the quantity of the products which are scrapped and need to rework can be reduced, the raw material utilization ratio can be improved, and the production cost can be reduced.

Description

technical field [0001] The invention relates to the field of sheet metal small hole processing, in particular to a small hole punching mechanism. Background technique [0002] At present, the processing technology of sheet metal small holes (<φ1.0) mostly adopts etching or drilling, which is time-consuming and costly, and most sheet metal parts need to be bent. If etching or drilling is used, it needs to be bent with a mold , there will be errors in the secondary positioning; at present, the small hole punches in the mold are reinforced to enhance the strength of the punches, but the punches need to be fixed with a splint to guide the stripping plate, because the punch is long and the stripping guide part is too thin, the punching The head is very easy to break; the frequency of replacing the punch is high, which causes waste of resources and increases the processing cost, and the replacement of the punch requires dismantling the mold, which takes a long time to replace. ...

AI Technical Summary

Problems solved by technology

[0002] At present, the processing technology of sheet metal small holes (<φ1.0) mostly adopts etching or drilling, which is time-consuming and costly, and most sheet metal parts need to be bent. If etching or drilling is used, it needs to be bent with a mold , there will be errors in the secondary positioning; at present, the small hole punches in the mold are reinforced to enhance the strength of the punches, but the punches need to be fixed with a splint to guide the stripping plate, because the punch is long and the stripping guide part is too thin, the punching The head is very easy to break; the frequency of replacing the punch is high, resulting in waste of resources and increasing the processing cost, and the replacement of the punch requires dismantling the mold, which takes a long time to replace

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