Universal post processing method for multi-axis numerical control machine tool

Abstract

The invention discloses a universal post processing method for a multi-axis numerical control machine tool. The universal post processing method comprises the following steps: (1) establishing a machine tool motion transformation chain according to the structure of the machine tool; (2) establishing a transformation matrix QWT from a cutter to a workpiece according to the machine tool motion transformation chain established in the step (1); (3) inputting motion coordinates Delta 1 for all translation shafts of the machine tool at an initial cutter position CL1; (4) calculating motion coordinates Delta i+1 for all the translation shafts at any follow-up cutter position CL i+1 of the initial cutter position CL1; and (5) judging whether the value of i is smaller than n, if yes, returning to the step (4.1) and continuing calculation after the value of i is added to 1, and if not, ending the calculation and outputting the motion coordinates of the translation shafts of the machine tool andthe motion coordinates of the rotating shafts of the machine tool which correspond to all the cutter positions. The universal post processing method for the multi-axis numerical control machine tool overcomes the defect that manual deduction is required in a computation formula for the motion coordinates of all the shafts in the machine tool in the general post processing method, can meet the post processing requirements of various multi-axis numerical control machines and has the advantages of high solving speed and high solving precision.

Description

Technical field: [0001] The invention relates to the field of multi-axis numerical control machining, in particular to a general post-processing method for multi-axis numerical control machine tools. Background technique: [0002] With the development of new energy, aerospace, shipbuilding and other industries, the processing quality requirements for main functional components such as wind turbine blades, aircraft inlets, propellers, etc. are getting higher and higher. The shape and working surface of this kind of parts are complicated, and the processing precision is high. Only the multi-axis CNC machine tool can complete the processing. [0003] In five-axis NC machining, the main task of post-processing is to convert the source file of machining tool position trajectory generated by CAM software into NC code acceptable to a specific machine tool. At present, post-processing of multi-axis NC machine tools mainly includes manual derivation and Numerically evaluate both met...

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Problems solved by technology

[0004] Aiming at the deficiencies of the existing general post-processing methods, the present invention proposes a general post-processing method for multi-axis machine tools. According to the structure of the machine tool, the kinematic transformation chain of the machine tool is established, and then the numerical method and the full differential method are used to calculate other tool positions in the source file. The movement amount of each axis of the machine tool corresponding to the tool position point, and then obtain the CNC machine code

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