Double-code joint effect-based numerical control machining method

Abstract

The invention belongs to the numerical control machining technical field and discloses a double-code joint effect-based numerical control machining method. The method includes the following steps that: (1) the geometric feature information of tool paths is calculated according to G codes in a numerical control machining preparation stage or offline process, so that second machining codes can be generated; (2) in a pre-machining code loading stage, a numerical control system loads the G codes and the second machining codes simultaneously; and (3) in a machining operation stage, the numerical control system synchronously analyzes the location information of the G codes and the geometric feature information of a tool path matched with the location information of the G codes in the second machining codes, and merges the geometric feature information of the tool path into a procedure data structure which is generated through analyzing the G codes, so that the speed and acceleration control of a machining process can be optimized. With the double-code joint effect-based numerical control machining method adopted, the motion control performance of the numerical control system can be improved without increasing costs, and quality and efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field related to numerical control machining, and more specifically relates to a numerical control machining control method with double-code joint action. Background technique [0002] The G&M code program files for NC machining follow the ISO 6983 standard, but the operating instructions in the ISO 6983 standard only include simple arcs and straight lines, and small line segments are still a common way of expressing tool paths in complex curved surface processing; good processing quality must be ensured , the CNC system needs to plan the speed according to the geometric properties of the tool path (for example, it needs to display the feed rate at the large curvature according to the curvature of the shape change, so as to meet the acceleration constraints of the machine tool and the accuracy of the contour trajectory); however, the CNC system The calculation must ensure real-time performance, the algorithm must ...

AI Technical Summary

Problems solved by technology

The NC machining control method adds a second machining code containing the geometric attribute information of the tool path without changing the format and syntax of the existing G code, so as to provide more accurate geometric features of the tool path during the NC machining process The information is used to optimize the speed and acceleration control of the machining process, and then solve the problem that some geometric attribute information that requires macroscopic analysis and calculation is difficult to calculate accurately in a strong real-time environment during complex surface machining. At the same time, the machine tool based on historical data of the machine tool Optimization and compensation information is used to improve the vibration resistance and stability of the machine tool, thereby solving the problem of reduced machining quality due to deformation, wear and vibration during CNC machining

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