A small hole punching die

Abstract

The invention relates to a small hole punching die. The small hole punching die comprises a base and a movable plate. The movable plate is arranged over the base and can do reciprocating movement in the vertical direction. The small hole punching die further comprises vertical punch needles, a lower die used for containing a part to be punched and an upper die used for fixing the punch needles. The upper die comprises an upper wedge plate and a lower wedge plate. The upper wedge plate is horizontally fixed to the position under the movable plate and is clamped between the lower wedge plate and the movable plate. The middle of the lower wedge plate is hollowed out and is used for containing a plurality of wedge blocks arranged uniformly and a plurality of conical cores. The conical cores are fixed to the lower surface of the upper wedge plate. The cross section of each conical core gradually decreases from top to bottom. According to the wedge blocks distributed on the same straight line, one punch needle is clamped and fixed between one wedge block and the adjacent wedge block on one side, and one conical core is clamped between the punch needle and the adjacent wedge block on the other side. By adopting the small hole punching die, the punch needles can be mounted and fixed easily and positioned accurately and are protected against damage, the mounting difficulty can be reduced, and the positioning accuracy can be improved.

Description

Technical field [0001] The invention relates to stamping processing equipment, in particular to a small hole punching die. Background technique [0002] Stamping is one of the most common processing methods. It relies on presses and molds to apply external force to plates, strips, pipes and profiles to cause plastic deformation or separation, so as to obtain workpieces (stamping parts) of the desired shape and size. 的Forming processing method. Punching can also use punches and needles to realize the punching process. For some very fine holes, such as the slits around stamps, a very small diameter punching needle is needed to punch the hole. It is more difficult to install a very small diameter punching needle into a traditional mold. Generally, the punching needle is directly inserted. Inserted into the fixing hole, it is very easy to break the punching needle and inaccurate positioning, which needs to be improved. Summary of the invention [0003] The purpose of the present inv...

AI Technical Summary

Problems solved by technology

For some extremely fine holes, such as the slit holes around stamps, punching pins with extremely small diameters are required to punch the holes. It is difficult to install the punching pins with extremely small diameters into the traditional mold. It is very easy to break the punching needle and inaccurately position it when it is inserted into the fixing hole. It needs to be improved.

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