CNC numerical control equipment tool path corner smoothing processing method

A numerical control equipment and smoothing technology, applied in the direction of digital control, program control, electrical program control, etc., can solve the problems that the end point cannot be adjusted, and the accuracy of the whole section is affected, so as to achieve the improvement of processing efficiency and processing quality, and the balance between speed and precision Effect

Active Publication Date: 2015-09-23
SUZHOU GFD AUTOMATION TECH
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Problems solved by technology

However, the disadvantage of this solution is that: for arc paths, the endpoints cannot be adjusted, either they are retained, or they are all broken into micro-line segments before processing; for long line segments, because the two endpoints are adjusted, the accuracy of the entire segment will be reduced. are affected

Method used

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Embodiment Construction

[0020] 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.

[0021] The CNC numerical control equipment tool path corner smoothing processing method of the present invention comprises the following steps:

[0022] a) Add a bool variable m_bAllowSmooth to the data structure of the motion commands (G00, G01, G02, G03) of the CNC equipment to mark whether smooth adjustment is allowed at the end of the command, and the default value is true;

[0023] b) Set or read the maximum deflection angle threshold θ and bow height error ε of the tool path motion command of the CNC numerical control equipment, so as to calculate the maximum segment length L 0 =ε*(1+cos(θ / 2)) / sin(θ / 2);

[0024] c) Read the current tool path motion command type and obtain the characteris...

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Abstract

The invention discloses a CNC numerical control equipment tool path corner smoothing processing method. The method comprises the following steps of setting a smoothing parameter in a tool path motion instruction of CNC numerical control equipment, wherein a default value of the smoothing parameter is ''Yes''; setting or reading a maximum deflection angle threshold theta and a bow high error epsilon of the tool path motion instruction of the CNC numerical control equipment so as to calculate a maximum fractional length; reading a current tool path motion instruction type, acquiring a characteristic value of a subsequent path, and carrying out segment treatment on the subsequent path according to the characteristic value of the subsequent path; carrying out end point adjustment; and carrying out line segment adjustment. By using the method in the invention, precision of a line segment and a middle portion of a long arc is retained; simultaneously a corner surrounding of a deceleration point can be adjusted so that a speed and the precision can be balanced. An experiment proves that the tool path on which the smoothing processing is performed by using the method is round and smooth. For some processing fields, such as highlight processing, a significant effect is achieved, and processing efficiency and processing quality are greatly increased.

Description

technical field [0001] The invention relates to a CNC numerical control system solution. Background technique [0002] For CNC machining equipment, the post-processor of the CAM system usually 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 Perform interpolation operation 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, forward-looking planning control is generally adopted. [0003] The forward-looking processing function is one of the symbolic functions of the modern CNC system, and the forward-looking ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/19
CPCG05B19/19G05B2219/43006
Inventor 郭先强何长安
Owner SUZHOU GFD AUTOMATION TECH
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