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Constant pressure automatic grinding device and method based on fuzzy adaptive force control

A fuzzy self-adaptive and adaptable technology, applied in the direction of self-adaptive control, grinding automatic control device, general control system, etc.

Inactive Publication Date: 2015-08-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional position control method can no longer meet the higher and higher requirements for product surface quality. Adding force control to automatic grinding equipment is an effective way to solve this problem

Method used

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  • Constant pressure automatic grinding device and method based on fuzzy adaptive force control
  • Constant pressure automatic grinding device and method based on fuzzy adaptive force control
  • Constant pressure automatic grinding device and method based on fuzzy adaptive force control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A constant force automatic grinding method based on fuzzy adaptive force control, including the following steps:

[0047] 1) Calibrate the coordinates of the workpiece through the position sensor, move the x-axis slowly, when the grinding equipment touches the workpiece, the one-dimensional force sensing equipment will generate a step signal, and detect the step signal and the reading of the servo motor encoder, Calculate the conversion relationship between the coordinates of the kinematic mechanism and the coordinates of the workpiece;

[0048] 2) Read the voltage value of the force sensor at different feed depths, and estimate the stiffness of the motion mechanism and clamping mechanism;

[0049] 3) Model the grinding process, design a fuzzy adaptive controller, and preliminarily estimate the control parameters;

[0050] 4) The algorithm of the fuzzy adaptive controller is programmed through the industrial control host, given a constant speed movement of the y-axis, ...

Embodiment 2

[0071] Such as figure 1 As shown, the grinding device for realizing the constant force automatic grinding method based on fuzzy adaptive force control includes an industrial control host, a workbench 1, a motion mechanism, a one-dimensional force sensing device, and a position sensor for obtaining the position coordinates of the workpiece , grinding equipment and workpiece clamping equipment 11, the motion mechanism and the workpiece clamping equipment are respectively fixed on the workbench, the motion mechanism includes an x-axis direction motion mechanism 12, a y-axis direction motion mechanism 2, and the one-dimensional force One end of the sensing device is connected to the grinding device, and the other end is connected to the y-axis direction movement mechanism 2 of the movement mechanism through the y-axis direction slider 3. The industrial control host is connected with the one-dimensional force sensing device, position sensor, grinding device, The x-axis direction mo...

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Abstract

The invention discloses a constant pressure automatic grinding method based on fuzzy adaptive force control. The grinding method comprises the following steps: detecting the contact force of a grinding head and a workpiece in a real-time manner to feed back force signals; changing an analog voltage value output by a controller according to a preset control algorithm, thereby controlling the output torque of an x-axis servomotor to control the contact force. The invention further provides a grinding device for realizing the grinding method. The grinding device comprises an industrial control main engine, a workbench, motion mechanisms, one-dimensional sensing equipment, a position sensor for acquiring the position coordinate of the workpiece, grinding equipment and workpiece clamping equipment. The grinding device can be used for detecting the normal grinding force in a grinding process based on an intelligent force control technology, and feeding back detection results; through the processing of the controller, driving signals are generated for continuous adjustment of the output torque of a driver, so that the normal grinding force can be controlled in a real-time manner and the constant pressure grinding can be realized.

Description

technical field [0001] The invention relates to the field of automatic grinding, in particular to a constant force automatic grinding device and method based on fuzzy adaptive force control. Background technique [0002] At present, a considerable part of grinding in the grinding industry is done manually by skilled workers, with a low level of automation. Manual grinding is not only labor-intensive, time-consuming, and inefficient, but also the dust generated by grinding is harmful to the health of workers. The efficiency of special-purpose grinding machine tools is very high, but the versatility of special-purpose machine tools is poor, suitable for mass production, and the scalability is not strong. Not only that, special-purpose machine tools are expensive. In high-precision grinding, the normal grinding force is an important factor affecting the surface processing quality and material removal rate, so ensuring the constant normal grinding force is the key to ensuring t...

Claims

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Application Information

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IPC IPC(8): B24B49/16G05D13/04
CPCB24B49/165B24B51/00G05B13/04
Inventor 张铁胡广陈首彦
Owner SOUTH CHINA UNIV OF TECH
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