Spindle cooperative numerical control system and method for different forms

Abstract

The invention relates to a coordination numerical control system and method for main shafts in different forms. The system comprises an interpretation module, a path planning module, a stroke planningmodule, an interpolation planning module and a feedback module, wherein the interpretation module selects a coordination instruction to interpret from a machining instruction module; the path planning module conducts path outline planning on the interpreted coordination instruction; the stroke planning module decides a first main shaft and at least one second main shaft from a parameter module and selects dynamic response parameters to conduct stroke command planning; the interpolation planning module is composed of feedforward modules and instruction conversion modules corresponding to the first main shaft and the second main shafts respectively; the feedback module receives dynamic signals through a first driver and at least one second driver, feeds the dynamic signals back to the interpolation planning module and calculates compensating command variables; the feedforward modules convert stroke commands into corresponding motion commands respectively; the instruction conversion modules add the corresponding motion commands to the compensating command variables respectively, results are converted into command formats and transmitted to the first main shaft and the second main shafts through the corresponding drivers, and the first main shaft and the second main shafts are in a coordination state, so that the purpose of coordination control is achieved.

Description

technical field [0001] The invention relates to a numerical control method and system applied to the cooperating work of main shafts of machine tools, in particular to a cooperating numerical control system and method for main shafts of different forms. Background technique [0002] At present, in the machine tool industry, most of the machine tools will have a spindle. The main use of the spindle is to carry the tool to rotate for cutting, or to clamp the workpiece to rotate and fix the tool to cut. In the computer numerical control machine tool (CNC) In the application of CNC devices, it is often necessary for two spindles to work together, such as a lathe system, where the two spindles do not stop receiving materials when they are rotating, the two spindles hold the workpiece at the same time for rotating cutting, or one spindle holds The workpiece, another spindle supports a multi-blade cutterhead to rotate simultaneously for cutting, etc. These processing technologies r...

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Problems solved by technology

This patent reveals the limitations of the current splicing technology in use, which can only be enabled in the first and second position control modes

[0006] In order to achieve good followability during the coordinated control of the two spindles, the Chinese invention patent with the publication number CN105278456A needs to continuously adjust the dynamic performance parameters of the two spindles, which is more complicated in design and consumes system performance. At the same time, the user is operating It is not easy to understand and use in terms of setting and setting

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