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Power failure automatic knife retracting control method and device of numerical control machine tool

A technology of CNC machine tools and control methods, applied in the direction of digital control, electrical program control, etc., can solve the problem of high cost of machine tools and achieve the effect of saving costs

Inactive Publication Date: 2012-07-25
TIANSHUI SPARK MACHINE TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the machine tool is high

Method used

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  • Power failure automatic knife retracting control method and device of numerical control machine tool
  • Power failure automatic knife retracting control method and device of numerical control machine tool
  • Power failure automatic knife retracting control method and device of numerical control machine tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: as figure 1 , figure 2 As shown, a control method for automatic tool retraction of a CNC machine tool after power failure includes the following steps:

[0017] 1) The power-off detection signal module detects the power-off signal, and when the power-off signal is detected, the power-off interruption response signal is processed by the programmable logic controller, and an interruption signal is sent;

[0018] 2) Start the charging power supply system to supply power, and the CNC machine tool control unit controls the machine tool to interrupt the processing program of the current workpiece; the charging power supply system supplies power to the programmable logic controller, the CNC machine tool control unit, and the servo drive module;

[0019] 3) Start the grinding wheel frame retraction module in the servo drive module, and the feed servo motor consumes energy for the feed servo motor capacitor module through the grinding wheel frame retraction modul...

Embodiment 2

[0021] Embodiment 2: as figure 1 , figure 2 As shown, the present invention also provides a control device for automatic tool retraction of a CNC machine tool, including a power-off detection signal module 1 for detecting a power-off signal, and the power-off detection signal module 1 is driven to respond to a power-off interruption signal The programmable logic controller 2 for processing, the programmable logic controller 2 drives the CNC machine tool control unit 3 for controlling the machine tool to interrupt the processing of the current workpiece, the CNC machine tool control unit 3 drives the servo drive module 4, and the servo drive module 4 drives the Give the servomotor 5 retraction, and the described servo drive module 4 includes the grinding wheel carrier retraction module 41 and the servomotor capacitor module 42 for energy consumption of the feed servomotor capacitor module; the programmable logic controller 2 1. The CNC machine tool control unit 3 and the serv...

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Abstract

The invention mainly relates to the technical field of the numerical control system control machine tool retraction, in particular to a power failure retraction and emergency retraction control method and a device of a machine tool. A power failure automatic knife retracting control method of a numerical control machine tool comprises the following steps that: interrupt signals are processed, the power is supplied, a feeding servo motor caries out energy consumption on a servo motor capacitance module through a grinding carriage retracting module, and the capacitance module is fast consumed, i.e. the power failure automatic knife retraction of the numerical control machine tool is completed. The invention also provides the power failure automatic knife retracting control device of the numerical control machine tool, which comprises a power failure detection signal module, a programmable logic controller, a numerical control machine tool control unit and a servo driving module, wherein the servo driving module drives the feeding servo motor for knife retraction. The control method and the control device have the advantages that an asynchronous sub procedure function of a siemens 802Dsl system is used for controlling and realizing the power failure knife retraction and emergency knife retraction functions of the machine tool, the cost is saved, and the structure is simple.

Description

Technical field: [0001] The invention mainly relates to the technical field of using a numerical control system to control the retraction of a machine tool, in particular to a control method and device for a machine tool power-off retraction and emergency retraction. Background technique: [0002] In modern cutting processing, many users require economical grinding machines to have the function of power-off protection and tool retraction, so as to protect the processed workpiece, grinding wheel and machine tool from being damaged. The Siemens 802Dsl system does not have this function, and only high-end systems such as the 840D have this function. The 840D system detects the 611D DC bus voltage. When the bus voltage is lower than the normal (set) value, the driver will automatically trigger the automatic retraction function of the set axis. The retraction amount is determined by the retraction time and the retraction speed. In order to ensure the energy required for tool ret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/18
CPCY02P70/10
Inventor 李维谦王建红
Owner TIANSHUI SPARK MACHINE TOOL
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