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Control method for achieving cutting tool radius compensation overall interference in numerical control system

A numerical control system, global interference technology, applied in general control system, control/adjustment system, program control, etc., can solve problems such as slow interference speed, slow program detection speed, and inability to apply software products

Active Publication Date: 2013-05-22
SHANGHAI WEIHONG ELECTRONICS TECH
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  • Abstract
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Problems solved by technology

[0006] The workpiece processed in reality will be more than figure 1 The one shown is much more complex, and the number of line segments is large. If there are hundreds of thousands or millions of line segments in the workpiece path, then the general method of offline detection of global interference will be very slow.
The huge amount of data may make the program detection speed extremely slow and cannot be applied to actual software products

Method used

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  • Control method for achieving cutting tool radius compensation overall interference in numerical control system
  • Control method for achieving cutting tool radius compensation overall interference in numerical control system
  • Control method for achieving cutting tool radius compensation overall interference in numerical control system

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Embodiment approach

[0029] In one embodiment, the method comprises the steps of:

[0030] (1) The CNC system generates the outer path of the tool according to the original workpiece path;

[0031] (2) The numerical control system arranges the endpoints of the line segments of the original workpiece path and the tool outer path in order from left to right, and stores the endpoints in the event queue in top-down order ;

[0032] (3) The numerical control system judges whether there is an event point in the event queue, if not, then end the method, if yes, enter step (4), wherein the event point is the original workpiece path or the intersection of the constituent line segments of the tool's outer path;

[0033] (4) The numerical control system initializes the state queue; the state queue is used to store all the line segments currently intersecting with the scanning line, and store them in a specified order;

[0034] (5) The numerical control system uses the scanning line to scan the event point...

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Abstract

The invention relates to a control method for achieving cutting tool radius compensation overall interference in a numerical control system and belongs to the technical field of data system control methods. The method comprises the steps of arranging end points of line segments formed by original workpiece paths and cutting tool outer side paths in sequence, and storing the end points into event queues in sequence; judging whether event points exist in the event queues or not, if so, utilizing a scanning line to order the event points and updating state queues; and reporting that overall interference exists if intersection points of line segments in the state queues are intersection points of the line segments formed by the original workpiece paths and the cutting tool outer side paths. The method perform quick overall interference judgment based on the scanning line, operation tine is only related to the number of the intersection points of the line segments, judging speed is high, and accuracy is high. In addition, over cutting possibility can be warned in real time, the control method is suitable for complicated workpiece processing, and is simple and convenient in achieving mode and low in achieving cost.

Description

technical field [0001] The present invention relates to the technical field of numerical control systems, in particular to the technical field of a tool control method in a machining process using a numerical control system, and specifically refers to a control method for realizing tool radius compensation global interference in a numerical control system. Background technique [0002] In the CNC system, it is often necessary to perform tool radius compensation on the workpiece to be processed, and the actual running path of the tool has a tool radius offset relative to the programmed path of the workpiece. Among the G code commands commonly used in the CNC system, G41 and G42 respectively instruct to establish the left tool compensation and right tool compensation of the tool. Tool radius compensation is of great significance for precise machining of workpieces: the customer's tool will wear out after processing some tools. Using radius compensation, the original workpiece ...

Claims

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Application Information

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IPC IPC(8): G05B19/404
Inventor 陈文君赵冬牟凤林汤同奎郑之开
Owner SHANGHAI WEIHONG ELECTRONICS TECH
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