A Spline Trajectory Control Instruction Optimization Method Based on Double-code Combined Action

Abstract

The invention belongs to the technical field related to numerical control machining, and discloses a spline trajectory control command optimization method based on the joint action of double codes. The method comprises the following steps: (a) setting the ideal processing trajectory of the object to be processed, and generating G codes according to the set ideal processing trajectory; (b) drawing the processing trajectory corresponding to the G code to obtain the actual processing trajectory, and The actual processing trajectory is compared with the ideal processing trajectory to obtain the distinguishing feature, and the code corresponding to the distinguishing feature is found in the G code, that is, the distinguishing feature code; (c) according to the distinguishing feature, for the Different feature codes are rewritten to obtain new processing codes. The new processing codes make the actual processing trajectory of the CNC machine tool the same as the ideal processing trajectory, and the optimization of the processing trajectory is realized so far. Through the invention, the machining track is optimized, the machining accuracy is improved, and the machining error is reduced.

Description

technical field [0001] The invention belongs to the technical field related to numerical control machining, and more specifically relates to a spline trajectory control instruction optimization method based on the joint action of double codes. Background technique [0002] In the field of CNC machining, high-speed and high-precision machining is a trend, but the command codes of traditional CNC systems (subsequently called G codes) follow the ISO6983 standard, and the motion commands provided by this standard only include arc and straight line commands, which is very important for CNC systems. It is not enough for the system to control the high-speed and high-precision movement of the machine tool. [0003] In the field of high-speed and high-precision machining, in order to meet the requirements of high-speed machining, the machining trajectory must be a smooth trajectory. Generally, the CNC system will smooth the trajectory of the G code of the small line segment type. The...

AI Technical Summary

Problems solved by technology

Because of such a fitting method, there is an error between the design contour of the workpiece and the command contour of the CNC system (subsequently referred to as the command error), plus the following error in the process of machine tool processing, mechanical structure transmission error, The influence of thermal error and other factors will amplify the command error and make the machining accuracy lower

[0005] To sum up, the original G code commands mainly have the following problems: 1. The trajectory information attached to the original G code commands is too little

2. The original G code command is a linear command, resulting in the command data is not smooth, and the command itself is not suitable for high-speed and high-precision machining scenarios

3. Due to the smooth processing inside the CNC system, the command trajectory of the CNC system is inconsistent with the user's command trajectory, which is contrary to the user's wishes

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