Constant-power grinding control device and constant-power grinding control method on basis of vibration frequency characteristic of grinding wheel

A technology of vibration frequency and control device, which is applied in the direction of automatic grinding control device, grinding drive device, grinding machine tool parts, etc., can solve problems such as defects in constant speed processing, and achieve small impact on inherent structure and safety performance High, dismantling flexible effect

Inactive Publication Date: 2013-07-24
HANGZHOU DIANZI UNIV
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Problems solved by technology

This patent collects signals by detecting the vibration of the spindle, which has high real-time performance, but cannot solve the defects caused by constant speed machining

Method used

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  • Constant-power grinding control device and constant-power grinding control method on basis of vibration frequency characteristic of grinding wheel
  • Constant-power grinding control device and constant-power grinding control method on basis of vibration frequency characteristic of grinding wheel

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, a constant power grinding control device based on the vibration frequency characteristics of the grinding wheel, including a servo motor 1, a coupling 2, a first support base 3, a second support base 4, a first eddy current sensor 5, and a grinding wheel rod 6 , bracket 7, second eddy current sensor 8, workbench 9 and reducer 10;

[0042] The grinding wheel rod 6 is sequentially connected with the drive shaft of the servo motor 1 through the coupling 2 and the reducer 10, and is fixed on the workbench 9 through the first support base 3 and the second support base 4. The workbench A Z-shaped bracket 7 is fixedly installed on the bracket 7, and two eddy current sensors are arranged on the bracket 7, wherein the probe of the first eddy current sensor 5 is facing the axis of the grinding wheel rod 6 and is parallel to the table surface...

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Abstract

The invention discloses a constant-power grinding control device and a constant-power grinding control method on basis of the vibration frequency characteristic of a grinding wheel. According to the constant-power grinding control device and the constant-power grinding control method, the characteristic value of grinding vibration of the grinding wheel is extracted after frequency analysis for carrying out recognition of grinding loads. If the change of grinding power is in an allowed range, information about a vibration curve of a rod center of a grinding wheel rod, information of the frequency analysis, information about a feeding speed, a working rotation speed and raw material of a workpiece, and other information are input into an expert database. If the change of the power is too much, a fuzzy decision making process is carried out, output delta u generates a pulse-width modulation (PWM) signal, the PWM signal controls a servo driving device, and therefore the feeding rate of a servo motor is controlled, and the purpose of constant-power grinding is achieved. The constant-power grinding control device is simple in mechanical structure, convenient to mount, flexible to dismount, good in self-adaption ability and suitable for all working conditions, little influence is caused on an inherent structure of an original grinding machine, and production efficiency is improved.

Description

technical field [0001] The invention relates to a grinding processing control device with constant grinding load, in particular to a constant power grinding control device and method based on the vibration frequency characteristics of a grinding wheel. Background technique [0002] A CNC grinding machine is a machine tool that uses abrasive tools to grind the surface of a workpiece. Compared with traditional grinding machines, it has the advantages of being suitable for processing special-shaped parts, eliminating human errors, high efficiency, and easy to realize precision compensation and optimal control through software. The existing domestic CNC grinding machines generally adopt a constant grinding speed. In fact, the choice of grinding speed should be determined according to the processing accuracy and surface finish requirements of the workpiece, the material of the workpiece, the rigidity and driving force of the machine tool, and the durability of the tool. Because...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B51/00B24B47/20
Inventor 倪敬王宏亮汤海天陈宇江
Owner HANGZHOU DIANZI UNIV
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