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Forward-looking rolling processing method of cnc system of numerical control equipment

A technology of numerical control equipment and processing methods, applied in the direction of digital control, electrical program control, etc., can solve problems such as efficiency decline, and achieve the effect of preventing slow efficiency, shortening processing time, and improving planning efficiency

Active Publication Date: 2019-06-04
SUZHOU GFD AUTOMATION TECH
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AI Technical Summary

Problems solved by technology

When there are many continuous micro-paths, due to the limitation of the maximum number of look-ahead segments, acceleration and deceleration have to be performed in the middle, resulting in a decrease in efficiency

Method used

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Embodiment Construction

[0023] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0024] This embodiment discloses a forward-looking rolling processing method of a CNC system of a numerical control device, and its key steps are as follows:

[0025] 1) Set or read: maximum deflection angle threshold, maximum number of look-ahead segments;

[0026] 2) Read the current command, if it is the end, go to step 7), and pass the parameter bRollback=false, then go to step 10);

[0027] 3) If the current command is pause, go to step 7) and pass the parameter bRollback=false;

[0028] 4) Read the path, if it is not the first section, calculate the tangential angle of its connection, if the angle is greater than the preset threshold, then step 7) and pass the parameter bRollback=false; ...

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Abstract

The invention discloses a forward-looking rolling processing method of a CNC system of a numerical control equipment, which improves the processing efficiency and quality without occupying more computer resources, and includes the following steps: judging the type of the current instruction, reading the subsequent path into the cache and obtaining the subsequent The characteristic value of the path; according to the judgment of the instruction type and the characteristic value of the subsequent path, the parameters are passed to distinguish whether to perform scrolling processing; the speed at the end point of the last path is set to 0, and the speed and acceleration at the starting point of the first path , acceleration and acceleration remain unchanged, and plan the speed of the path in the current cache; when the passed parameters indicate that no scrolling processing is required, all path interpolation will be output immediately; when the passed parameters indicate that scrolling processing is still required, only Interpolate and output part of the path, and reversely search the predetermined number of paths from back to front, take the maximum speed of the joint point as the limit, interpolate output before the limit, and cache after the limit to wait for the next scrolling process.

Description

technical field [0001] The invention relates to a CNC numerical control system solution. Background technique [0002] In the prior art, the post-processor of the CNC system of the numerical control equipment decomposes the complex path into a series of small path segments (such as straight line segments or arc segments) according to the requirements of machining accuracy, and then the relevant interpolators in the CNC system Interpolation operation is performed for each specific tiny path segment. Acceleration and deceleration is an important control function to be completed by interpolation operation. In the acceleration and deceleration control mode, there are acceleration and deceleration before interpolation and acceleration and deceleration after interpolation. In order to ensure the machining accuracy, the forward-looking planning control is generally adopted. The forward-looking processing function is one of the symbolic functions of the modern CNC system. The forwa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/416
CPCG05B19/416
Inventor 郭先强何长安
Owner SUZHOU GFD AUTOMATION TECH
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