Silicon steel sheet punching process and device for simultaneously punching two holes

Abstract

The invention relates to a silicon steel sheet punching process and device for simultaneously punching two holes, belonging to the technical field of transformers. The technical scheme is that the silicon steel sheet punching device comprises a punch press (1), a guide shaft (2), a guide sleeve (3), a slideway (4) and a double punch pin (5), wherein the guide shaft and the guide sleeve are arranged between a stroke slider at the upper side of the punch press and a bottom working table so as to improve the precision of the punch press; the slideway is machined on the guide sleeve, the double punch pin is arranged on the slideway and the distance of the double punch pin can be freely regulated in a certain spacing so as to satisfy the distance between the two holes on an iron yoke; and a lower punch die is arranged on the slideway of the bottom working table and is aligned with an upper punch pin in the debugging process so that the two holes can be simultaneously punched. The silicon steel sheet punching process and device which are provided by the invention have the positive effects that: the two holes can be simultaneously punched through the punch press; the punching on an iron yoke piece can be completed through one-time punching; and therefore, the efficiency is increased by more than one time and the punching quality is improved.

Description

technical field [0001] The invention relates to a silicon steel sheet punching process and equipment for simultaneously punching two holes, belonging to the technical field of transformers. Background technique [0002] The main body of a dry-type distribution transformer is composed of iron core, winding and body insulation. In order to reduce noise, the structure must ensure the clamping force of the clamp on the iron core. At present, the general method is to set two symmetrical poles on the iron yoke. Through the fastening of the screw rod, the clamp can produce a good clamping force on the iron yoke, thereby reducing noise. However, in the absence of a CNC cross-cutting line for silicon steel sheet, through ordinary punching, only one hole can be punched at a time, and then the distance between the two holes can be measured, and then the second hole can be punched. The processing speed is slow, and the distance between the two holes is not high. It is easy to ensure th...

AI Technical Summary

Problems solved by technology

However, in the absence of a CNC cross-cutting line for silicon steel sheet, through ordinary punching, only one hole can be punched at a time, and then the distance between the two holes can be measured, and then the second hole can be punched. The processing speed is slow, and the distance between the two holes is not high. It is easy to ensure the accuracy, which directly affects the stacking speed and end surface flatness of the core

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