A Method for Predicting the Life of a Bar Shearing Tool

A tool life and prediction method technology, applied in the direction of manufacturing tools, measuring/indicating equipment, metal processing equipment, etc., can solve the problem of unsuitable bar shearing machine, achieve fast prediction speed, improve reliability, and low economic cost Effect

Active Publication Date: 2021-01-29
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing tool life prediction methods need to rely on expensive automatic testing equipment, which is not suitable for bar shearing machines, and there is no life prediction method specifically for bar shearing tools in the prior art

Method used

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  • A Method for Predicting the Life of a Bar Shearing Tool
  • A Method for Predicting the Life of a Bar Shearing Tool
  • A Method for Predicting the Life of a Bar Shearing Tool

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0033] Such as figure 2 Shown is a diagram of the positional relationship between the movable knife and the fixed knife. The bar shearing tool includes a fixed knife 3 and a movable knife 2. When in use, the fixed knife 3 is fixedly installed below, and the bar 4 is pressed and fixed on the fixed knife 3 by the pressing device 1. The movable knife 2 is located on the bar. Above the material 4, the side 2a of the movable knife 2 faces the side where the fixed knife is located.

[0034] Such as figure 1 Shown is a flow chart of an embodiment of the method for predicting the life of a bar shearing tool in the present invention. The method for predicting the life of a bar shearing...

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Abstract

The invention discloses a method for predicting the life of a bar shearing tool. The wear amount of each shear is obtained by quantitatively detecting the wear amount on the side of the movable knife, and then according to the failure distance between the fixed knife and the movable knife difference from the initial distance, thereby obtaining the predicted life of the bar shearing tool, that is, the life prediction method of the bar shearing tool of the present invention can achieve the technical purpose of obtaining the service life of the tool in the design stage, and improve the performance of the shearing machine reliability. Specifically, the method for predicting the life of a bar shearing tool of the present invention also has the following advantages: 1) it does not need to carry out a full life test on the tool, and has the characteristics of low economic cost, fast prediction speed and high accuracy; 2) the method of the present invention The prediction result is more in line with the actual result, and the tool life prediction error is small; 3) the tool life is predicted by the present invention, the tool can be replaced in advance, preventing the tool damage from affecting the processing quality of the blank, and improving the reliability of the bar shearing machine .

Description

technical field [0001] The invention belongs to the technical field of measuring the state of a cutting tool, in particular to a method for predicting the life of a bar shearing tool. Background technique [0002] In mechanical processing, the process of processing any form (pipe, bar or profile) material into the required geometric size is called blanking. The blanking is the first process of mechanical processing. Only the raw materials are separated into individual blanks. to proceed to the next step. Because of its low economic cost, high efficiency, and low consumption, bar shears are widely used before heating and forging processes. [0003] Due to the high ductility of stainless steel, severe irregular plastic deformation is prone to occur during the shearing process, and it scratches the shearing blade and the blade surface, which aggravates the wear of the blade. In extreme cases, it may even cause stress concentration at the blade, resulting in chipping of the bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/09
Inventor 王时龙董建鹏周杰杨波易力力陈航
Owner CHONGQING UNIV
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