Track smoothing method suitable for five-axis numerical control device

Abstract

The invention relates to a five-axis numerical control processing technique for complex curved surfaces, in particular to a tracking smoothing method suitable for a five-axis numerical control device, which belongs to the technical field of numerical control. The method comprises the following steps of: 1, continuously reading a segment of numerical control command point sequence, and identifying a program segment which satisfies a smooth curve interpolation condition; 2, estimating the positions of interpolation points between adjacent command points, and taking the positions as first-time correction command points; 3, parameterizing the first-time correction command point; 4, generating second-time correction command points, and determining first-order derivative vectors and second-order derivative vectors of the second-time correction command points; and 5, constructing a quintic spline curve for each coordinate component of adjacent second-time correction command points respectively, connecting the quintic spline curves into an integral smooth curve, and performing curve interpolation on the smooth curve. By means of the method, the processing efficiency and the processing accuracy of the five-axis numerical control device are increased, and a turning phenomenon caused by broken line tracks is eliminated.

Description

technical field

[0001] The invention relates to a five-axis numerical control machining technology for complex curved surfaces, specifically a track smoothing method suitable for a five-axis numerical control device, and belongs to the technical field of numerical control. Background technique

[0002] Five-axis CNC machining technology has become the mainstream trend of modern CNC development because of its ability to process complex curved surface parts. It has a decisive influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries that are related to the lifeline of the country. In five-axis CNC machining, due to the continuous increase in the complexity of the workpiece, the programming function of the CNC device itself cannot simply meet the needs of processing. Modern CNC devices need to complete the processing with the assistance of CAD / CAM systems.

[0003] When the CAD / CAM ...

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