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A high-sensitivity and precise monitoring method for high-speed broaching

A high-sensitivity, high-speed technology, used in metal processing equipment, metal processing machinery parts, broaching machines, etc.

Active Publication Date: 2021-10-08
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing processing monitoring methods are difficult to meet the requirements of distinguishing different processing abnormalities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with examples.

[0014] A high-sensitivity and precise monitoring method for high-speed broaching of the present invention includes steps S1, S2 and S3. details as follows:

[0015] S1. Obtain the noise signal A under normal working conditions and various abnormal working conditions when the cutter teeth cut in or out during part processing i , pressure signal p i , cutting force signal f i , vibration signal a i , i=1, 2, 3, 4, 5, 6, respectively fitting them as the relationship with time t, according to the noise signal, pressure signal, cutting force signal and vibration signal under different working conditions with time t relationship to preliminarily determine the type of working condition. Through the above steps, multiple sets of signal information of parts processing under different working conditions can be obtained: (A 1 ,p 1 ,f 1 ,a 1 ), (A 2 ,p 2 ,f 2 ,a 2 ),...(A 6 ,p 6 ,...

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Abstract

The invention discloses a high-sensitivity and precise monitoring method for high-speed broaching, which includes the following steps: firstly, the noise signal A under normal working conditions and various abnormal working conditions is obtained when cutter teeth cut in or out during part processing i , pressure signal p i , cutting force signal f i , vibration signal a i , i=1, 2, 3, 4, 5, according to the analysis of the above signals, as the basis for judging the actual working conditions, that is, the working conditions in processing can be accurately monitored, and different measures can be taken according to different abnormal working conditions. The present invention obtains the signal relationship characteristics under different working conditions by analyzing the noise signal, pressure signal, cutting force signal and vibration signal under different working conditions, and judges the working condition type in actual processing through these signal relationship characteristics, so that according to different The types of working conditions are adjusted accordingly, and the invention realizes the monitoring of different abnormal working conditions through a novel signal processing method.

Description

technical field [0001] The invention relates to the field of machine tool monitoring, in particular to a high-sensitivity and precise monitoring method for high-speed broaching. Background technique [0002] At present, in high-speed cutting, abnormal factors such as the geometric structure and cutting angle of the tool, the thermal mechanical processing load of the workpiece material of the tool and its contact friction, cutting parameters, and the wear of the tool will cause the chip to be difficult to break and the chip to stick to the surface. On the tool, it will lead to an increase in cutting force, an increase in cutting temperature, abnormal wear of the tool, and a decrease in the surface quality of the workpiece. Different from turning and milling, in broaching, chips are formed and stored in a limited space in the chip pocket of the broach. After the cutting teeth are separated from the workpiece, it is possible to break away from the contact with the tool. During...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/00B23Q17/09B23Q17/12B23D41/00
CPCB23D41/00B23Q17/00B23Q17/0952B23Q17/098B23Q17/12
Inventor 丁撼陈雪林唐进元
Owner CENT SOUTH UNIV