The Method of Machining Cylindrical Surface Using Macro Program NC

Abstract

The invention provides a method for using a macro-program to perform NC machining on a cylinder curved surface, aiming at providing a machining method to increase the efficiency of machining a cylinder curved surface. According to the invention, the method includes the following steps: in the programming of a macro-program, adopting a G91 relative value instruction G1G91X#9A[#9*360 / [2*#6*SIN[ACOS[[#6-#7*SIN[ACOS[[#7-#8] / #7]]] / #6]]]] to perform linkage machining; conducting program nesting between machining depth of the cylinder curved surface and machining of division uniform distribution angle, the program being formed by a machining depth condition determining statement WHILE[#1GE#2] DO1 and a cylinder curved surface division machining angle circulating determination statement WHILE [#4LT360]DO2; using a flat end mill to conduct fitting milling machining on the curved surface; based on the characteristic of having a A-shaft rotation working bench of a typical 4-axis machining tool to secure surface of revolution parts to the center of the A-axis of revolution of the 4-axis machining tool, and arranging machining original points of the machining tool in the Y and Z direction at the center of the A-axis of revolution for multi-shaft linkage, thus completing the machining of the cylinder curved surface.

Description

technical field [0001] The invention relates to a method for processing cylindrical curved surfaces on a four-axis numerically controlled milling machine using macro programs. Background technique [0002] With the development of modern manufacturing technology, in order to adapt to products with more and more complex shapes and higher precision requirements, technologically advanced multi-axis CNC machine tools are more and more widely used in the machinery manufacturing industry. The processing process of these advanced numerical control equipment needs to be controlled by the program. The preparation of the numerical control program is an important part of the numerical control technology and one of the key technologies of the numerical control machining. The knowledge and experience of the processing technology and programming personnel are closely related. The efficiency and quality of programming determine the processing accuracy and production efficiency of products ...

AI Technical Summary

Problems solved by technology

Cylindrical curved surfaces are parts that require high machining accuracy, shape and position tolerances, and surface quality. It involves the processing of multiple complex curved surfaces. Programming with automatic programming software requires three-dimensional modeling, tool path generation, processing simulation, post-processing and Program optimization and other processes take a long time, and the generated program is tens of thousands of segments, which is difficult to check and modify. Once the tool has a problem during the machining process, the program may have to be re-generated

To process cylindrical surfaces on multi-axis CNC machine tools with rotating axes such as four-axis and five-axis, it is usually necessary to use programming software to generate processing programs, but the processing programs are often bulky and inconvenient to search and modify programs

In addition, manual programming of traditional four-axis FANUC machine tools is a combination of main program and subroutine. It needs to write a large number of subroutines separately, call the subroutine in the main program to execute the cycle, and the main program and subroutine will form several independent programs. Program management, Very inconvenient to find and modify

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