Return-to-zero system and method for electric discharge machining machine tool

A technology for EDM machine tools and motor drivers, applied in circuits, electric processing equipment, metal processing equipment, etc., can solve problems such as affecting the zero return accuracy, zero point inconsistency, photoelectric switch feedback lag, etc., to save maintenance costs and prevent workpiece damage. , the effect of improving work efficiency

Inactive Publication Date: 2017-07-25
WUXI MICRO RES PRECISE MACHINERY TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The original zero return method has the following disadvantages: 1) The characteristics of the photoelectric switch and the rotary encoder detect that the signal is at the same position each time, and there may be a

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  • Return-to-zero system and method for electric discharge machining machine tool
  • Return-to-zero system and method for electric discharge machining machine tool

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[0022] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0023] Such as figure 1 As shown, a zero return system for an EDM machine tool includes an industrial computer, a motor driver, a motion control card, a motion module, a rotary encoder, a photoelectric switch, and a motor. The industrial computer controls the motion control card, The motion control card is respectively connected to the motor driver, the rotary encoder and the photoelectric switch. The motor driver controls the shaft motion through the motor to drive the motion module. The rotary encoder feeds back the shaft motion information to the motion control card in real time. The photoelectric switch receives the signal and feeds it back to the motion control card.

[0024] Preferably, the ...

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Abstract

The invention discloses a return-to-zero system and a return-to-zero method for an electric discharge machining machine tool. The system comprises an industrial personal computer, a motor driver, a motion control card, a motion module, a rotary coder, a photo-electronic switch and a motor, wherein the industrial personal computer is used for controlling the motion control card; the motion control card is connected with the motor driver, the rotary coder and the photo-electric switch respectively; the motor driver is used for controlling a shaft to move by virtue of the motor and driving the motion module; the rotary coder is used for feeding back the motion information of the shaft to the motion control card in real time; and the photo-electric switch is used for receiving signals and feeding back the signals to the motion control card. By adopting the method, high consistency of a zero position is realized; the consistency of a coordinate system of the machine tool which is repeatedly powered and powered off is guaranteed; the repeat accuracy is guaranteed; collision caused by machining or program running is prevented; damages and scrapping of work pieces and precision reduction of the machine tool are prevented, so losses caused by shutdown of the machine tool are reduced, the machine debugging cost is lowered, the cost for replacing shaft accessories and dismounting the shaft is lowered, the work efficiency is improved, the maintenance cost is lowered, and durable machining precision of the machine tool is guaranteed.

Description

technical field [0001] The invention relates to a zero return system and method of an electric discharge machine tool, belonging to the technical field of electric discharge machining. Background technique [0002] Returning to zero is to let the machine tool know where the reference point of the machine tool is. The operations that must be completed every time the CNC machine tool is powered off and turned on. [0003] After the return-to-origin axis receives the return-to-zero signal, it moves toward a fixed direction at a slower speed at the current position. After receiving the signal as a zero-position photoelectric switch, the motion control system begins to detect the encoder zero-position pulse; when the system detects After reaching the first zero pulse, the motor stops rotating immediately, and the current position is the zero point of the machine tool. [0004] The original zero return method has the following disadvantages: 1) The characteristics of the photoel...

Claims

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Application Information

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IPC IPC(8): B23H1/02
CPCB23H1/02
Inventor 虞锋宗国俊
Owner WUXI MICRO RES PRECISE MACHINERY TECH CO LTD
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