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Positioning method and positioning system for back barrier material of sheet shear or bending machine

A positioning method and backgauge technology, applied in positioning devices, shearing machine accessories, shearing devices, etc., can solve the problems of unsatisfactory high-precision processing, unsatisfactory positioning effect, high cost, etc., and achieve easy maintenance and reduce The effect of equipment cost and simple operation

Active Publication Date: 2013-04-03
NANJING ESTUN AUTOMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the servo motor or frequency converter to control the asynchronous motor has a good positioning effect, the motor runs smoothly and the positioning is accurate, but the cost is high; while the method of directly using the IO signal to control the asynchronous motor is low in cost, but the positioning effect is not ideal. Can not meet the demand for high-precision machining

Method used

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  • Positioning method and positioning system for back barrier material of sheet shear or bending machine
  • Positioning method and positioning system for back barrier material of sheet shear or bending machine

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Experimental program
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Effect test

specific Embodiment approach

[0040] First set the target position to 300.00mm; set the in-position tolerance to 0.02mm; set the early stop distance to 5.00mm; set the OutTime to 20ms, and set the WaitTime to 2s;

[0041] After the parameters are set, start the system and use IO to directly control the asynchronous motor to drive the back gauge. Assume that the current position is 500.00mm. When the back gauge moves to the target position of 300.00mm, when the back gauge position enters Within the range of early stop, that is, at 295.00mm, turn off the motor output, so that the back gauge continues to run to the target position by inertia, and calculate the error ε between the actual position and the target position when the back gauge stops completely;

[0042]Assuming that the actual position CurPos is 301.00mm at this moment, the error ε=1.00mm, which is greater than ε1, the system judges that the positioning does not meet the positioning accuracy requirements and has exceeded the target position; the sy...

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Abstract

The invention discloses a positioning method and a positioning system for a back barrier material of a sheet shear or a bending machine. The positioning method comprises the following steps of: arranging a motion control component and a displacement measuring component in the bending machine or the sheet shear; during positioning, shutting down motor output on the back barrier material which is a certain distance away from a target position in a way of combining motor driving with an inertia effect, and driving the back barrier material to approach the target position by means of inertia; and when positioning does not meet the positioning accuracy, automatically judging the positioning direction according to the current position of the back barrier material, outputting corresponding motor positive and negative rotating signals, driving the motor to move by a very small distance according to preset output duration and a positioning direction, computing a positioning error once again, and repeating relevant judgment and corresponding operation till positioning is completed and a position signal is output. Due to the adoption of the method and the system in the sheet shear or the bending machine, the positioning accuracy of the back barrier material can be increased greatly on the premise of not using any frequency converter or servo motor, hardware equipment of a machine tool is simplified, and equipment cost is lowered.

Description

technical field [0001] The invention relates to the technical field of shearing and bending machine tool control, in particular to a positioning method and a positioning system for a back gauge of a shearing machine or a bending machine. Background technique [0002] The main function of the backgauge of the shearing machine or bending machine is to control the feeding length of the processed plate, and to bend or cut at the required position. If the position of the backgauge is not accurate, it will cause the workpiece to be processed. Unqualified, so precise positioning control of the backgauge is very necessary. [0003] At present, the driving methods of the backgauge of the bending machine or the shearing machine mainly include ordinary asynchronous motors and servo motors, and the driving methods of ordinary asynchronous motors include two methods: IO direct control of asynchronous motors and control of asynchronous motors through frequency converters. . Using the se...

Claims

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Application Information

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IPC IPC(8): B23D33/00B21D43/00
Inventor 郑飞罗禹李光泉徐林飞吴波
Owner NANJING ESTUN AUTOMATION CO LTD
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