Cold straightening process for puncher

A puncher and process technology, applied in the field of calibration technology, can solve the problems that the calibration accuracy cannot be effectively controlled, affect the quality and service life of the product, and affect the hardness of the puncher product, etc., to solve the beating, ensure the hardness, avoid damage effect

Inactive Publication Date: 2017-10-10
WEIHAI WEIDA PRECISION CASTING CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, this processing method not only has a large beating range of the puncher, so that the calibration accuracy cannot be e

Method used

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  • Cold straightening process for puncher

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Such as figure 1 Shown, overall steps of the present invention are as follows:

[0015] Step 1. Fixing the workpiece: Start the open switch of the pneumatic chuck 1, the pressure of the gas will decrease after passing through the pressure reducing valve 2 on the rear side of the pneumatic chuck 1, and the jaws of the pneumatic chuck 1 will be released in the direction away from the puncher 3; The hexagonal end of the punch 3 is inserted into the pneumatic chuck 1; the closing switch of the pneumatic chuck 1 is activated, the pressure increases after the gas comes out through the booster valve 4, and the claws of the pneumatic chuck 1 are pushed toward the punch 3 to clamp;

[0016] Step 2. Find the out-of-range point: install the dial gauge 5 on the highest part of the outer circle of the puncher 3 by rotating the dial stand; ...

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Abstract

The invention discloses a puncher cold correction process, the overall steps of which are as follows: fix the hexagonal end of the puncher on the claw of a pneumatic chuck; test the lowest point of the puncher through a dial gauge, so that Find out the highest out-of-tolerance position on the opposite side, that is, the largest deformation of the hole punch that needs to be corrected; use the pressure lever to correct and shape the highest out-of-tolerance position of the hole punch; detect the beating range of the hole punch , if it is unqualified, repeat the above operation; temper the workpiece of the puncher that has passed the test. The invention not only solves the jumping of the punch in the production and molding process, but also ensures the hardness of the product, can effectively avoid the damage to the hardness of the punch caused by the traditional thermal correction method, and has strong practicability.

Description

technical field [0001] The invention relates to a calibration process, in particular to a puncher cold calibration process. Background technique [0002] As a common tool accessory in the field of electric tools, the hole punch has a large sales volume and usage at home and abroad. One end of the traditional hole punch is an outer hexagonal shape, the other end is a large cylindrical shape, and the axes of both ends are on the same horizontal line. However, during the manufacturing process of the punch, most of the workpieces will be deformed during heat treatment and quenching, so that the axes at both ends of the punch deviate, which affects the use effect. Aiming at this problem, the conventional treatment method is to correct and reshape the puncher by means of local heating. However, this processing method not only has a large jumping range of the punch, which makes the calibration accuracy not effectively controlled, but also affects the product hardness of the punch...

Claims

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Application Information

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IPC IPC(8): B21D3/16B21C51/00
CPCB21D3/16B21C51/00
Inventor 董政柳义平
Owner WEIHAI WEIDA PRECISION CASTING CO LTD
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