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Automatic feeding position tracking control method of numerical control cutting machining process

A processing and automatic feeding technology, applied in metal processing, electrical digital data processing, special data processing applications, etc., can solve the problems of low accuracy, poor real-time performance, poor speed, etc., and achieve simple online implementation, simple design and practicality strong effect

Active Publication Date: 2019-04-02
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0003] In order to overcome the disadvantages of poor real-time performance, poor rapidity and low accuracy of the existing control method for positioning the moving pressure head in the numerical control cutting process, the present invention provides a simple and easy-to-implement, real-time and rapid A Better and Higher Accuracy Tracking Control Method for Automatic Feeding Position in NC Cutting Process

Method used

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  • Automatic feeding position tracking control method of numerical control cutting machining process
  • Automatic feeding position tracking control method of numerical control cutting machining process
  • Automatic feeding position tracking control method of numerical control cutting machining process

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Embodiment Construction

[0028] The method of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] refer to figure 1 , figure 2 with image 3 , a method for tracking and controlling automatic feeding positions in a numerically controlled cutting process, said method comprising the steps of:

[0030] 1) Consider the second-order continuous-time dynamic mathematical model of the displacement and torque of the raw material conveyor belt during the CNC cutting process, see formula (1):

[0031]

[0032] Among them, t represents the time variable, s; x 1 Indicates the displacement variable of the conveyor belt, that is, the feeding position, m; x 2 Indicates the feeding speed of the conveyor belt, m / s; "·" indicates the first derivative of the corresponding variable; the constant C is the damping coefficient, N s / m; M is the mass of the raw material, kg; the constant H is the lead of the transmission device , m; the constant J is t...

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Abstract

The invention discloses an automatic feeding position tracking control method of the numerical control cutting machining process. In order to solve the control problem of automatic feeding position tracking target values in the numerical control cutting machining process, dynamic mathematical models of conveyer belt displacement and conveying effective torque of the numerical control cutting machining process are set up; isovalent state space models of the conveyer belt displacement and conveying torque quantity of the numerical control cutting machining process are set up according to tracking deviations between feeding positions and the target values; and a numerical control cutting machining process automatic feeding position tracking controller is designed by using results calculated by a MatLab function care, and automatic tracking control of the numerical control cutting machining process automatic feeding positions over the target values can be achieved. The automatic feeding position tracking control method of the numerical control cutting machining process is simple in design and easy to realize, and has the good realtime performance, good speedability and high accuracy.

Description

technical field [0001] The invention belongs to the field of automatic control of the numerical control cutting process, and relates to a method for tracking and controlling the automatic feeding position of the numerical control cutting process. Background technique [0002] The CNC cutting process requires cutting equipment to carry out continuous punching operations. Among them, automatic feeding is one of the key links in the cutting process, which is related to the quality and production efficiency of the cutting products. Therefore, the automatic tracking control technology of the automatic feeding position is the key control technology of the CNC cutting process. The use of hydraulic transmission device is the main technological way to realize the automatic feeding operation in the CNC cutting process. Through the retrieval of the literature on the automatic feeding position tracking control method of the existing CNC cutting process, it is found that the current aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26D5/00B26D7/06B26F1/40G06F17/50
CPCB26D5/005B26D7/06B26F1/40G06F30/20
Inventor 何德峰余世明俞立徐建明董辉童孝忠
Owner ZHEJIANG UNIV OF TECH
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