Path generation method for numerical control milling tool of hydraulic valve block

Abstract

The invention discloses an automatic, intelligent and rapid programming method for numerical control milling of a hydraulic valve block. The method comprises the following steps: 1) performing initialization setting on a solid model of a multi-station fixture; 2) reading in valve block data, inserting the fixture, initializing programming coordinates of each station, and establishing a programmingmodel; 3) machining a valve body surface; 4) machining a characteristic hole; 5) generating a machining path of a multi-station hydraulic valve block; 6) performing post-processing on the machining tool path generated by programming to obtain a machining instruction code which can be identified by a numerical control machine tool. With adoption of the automatic, intelligent and rapid programmingmethod for numerical control milling of the hydraulic valve block, part machining of the multi-station hydraulic valve block is performed by the fixture, multiple hydraulic valve block parts can be clamped once, automatic and rapid programming of multi-station parts is realized, a numerical control milling program for multiple valve blocks is written rapidly, and the numerical control program writing efficiency and part machining efficiency are increased.

Description

Technical field [0001] The invention relates to an intelligent programming method for numerical control milling processing of hydraulic valve blocks of hydraulic systems in mechanical equipment, in particular to an intelligent and automatic programming method for numerical control milling processing of hydraulic valve blocks of hexahedron shape. The method belongs to the technical field of numerical control processing technology and programming discipline in mechanical manufacturing. Background technique [0002] The hydraulic valve block is mainly used for the oil circuit connection between the threaded cartridge valve and the plate superimposed valve. It installs a large number of complex hydraulic valves, sensors and filters on a valve block. It is a modern high-pressure, large-flow and The main structural element in the application of integrated hydraulic system is an important way of system integration and connection. [0003] In order to improve the manufacturing accuracy an...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the manufacturing accuracy and production efficiency of hydraulic valve blocks, the processing method commonly used in modern manufacturing engineering is CNC machine tool milling. The typical processing technology of valve blocks is milling, drilling, reaming, reaming and tapping. All processes are required to be processed on CNC machine tools, the processing technology is complex, and there are many types and styles of processing tools

[0004] From the engineering practice of NC machining program compilation, some enterprises need to manually calculate the base point coordinates, node coordinates and other feature point coordinates of the tool path when compiling hydraulic valve block programs, and use macro programs and other instructions to manually write processing program codes. The degree of processing automation is high, but the efficiency of NC programming is low, and processing instructions are prone to errors; the debugging of the program in the first part trial cutting processing stage is time-consuming and laborious, which seriously restricts the manufacturing quality and production efficiency of hydraulic valve blocks.

[0005] With the development of modern NC programming technology, NC programming is widely implemented by means of computer graphics interactive programming, but using this method to compile NC machining programs, although the 3D solid hydraulic valve block model data designed by the designer can be used for NC programming, but Due to the division of rough machining, semi-finishing and finishing stages, and the arrangement of procedures, different machining geometric elements need to be constructed, element definitions need to be frequently selected, cutting process parameters are input, the programming efficiency is low, and program errors are prone to occur , resulting in scrapped parts

[0006] Summarizing the existing engineering practice, the processing and NC programming of hydraulic valve blocks are usually produced in a single piece, and the positioning and clamping are repeated continuously, and the production efficiency cannot meet the needs of modern manufacturing and production.

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