Flat hole punching mould of round pin

Abstract

The invention discloses a flat hole punching mould of a round pin, which comprises a base. A cylinder, a movable end and a clamping mechanism are arranged on the base, a tool apron mechanism is movably connected onto the movable end, and the tool apron mechanism is used for punching the round pin fixed on the clamping mechanism. The flat hole punching mould completes round pin punching by adopting the tool apron mechanism, the clamping mechanism and the cylinder which are mutually matched to work, work efficiency is high, expansibility of the tool apron mechanism during the round pin punching is offset by depending on a transverse backstop, the round pin is kept to be free of deformation or small in deformation quantity, and the cylinder is guaranteed to be free of influence of external force.

Description

technical field [0001] The invention relates to a hot stamping die in one field, in particular to a die used for connecting flat holes of connecting pins of locomotives and vehicles. Background technique [0002] The round pin with flat hole is a kind of connecting pin commonly used on locomotives and vehicles. The round pin is made of high-quality carbon structural steel according to the standard of the Ministry of Railways. After being heated by intermediate frequency, it is punched on the press. Subsequent machining efficiency and quality. [0003] At present, manual thread locking and clamping round pins are mostly used, and the flat holes are punched out by a punch. There are gaps in the threads and it is difficult to push and pull after the threaded connection is heated and expanded. The mechanical connection locking requires a worker to operate, so in summary The current processing methods still have room for improvement in terms of work efficiency and economic benef...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, manual thread locking and clamping round pins are mostly used, and the flat holes are punched out by a punching machine. There are gaps in the threads and the thread connection is difficult to expand and push after being heated and expanded. Mechanical connection locking requires a worker to operate, so in summary The current processing methods still have room for improvement in terms of work efficiency and economic benefits

[0004] It can be seen that the above-mentioned existing artificial thread locking and clamping round pin is punched out of a flat hole by a punching machine, and obviously still has inconvenience and defects in use, and needs to be further improved urgently.

In order to solve the problems existing in the existing technology, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above problems, which is obvious. It is a problem that relevant industry players are eager to solve

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