Method for configuring alternative and dynamic drive of Z-direction main shafts of numerically-controlled machine tool with multiple Z-direction shafts and system thereof

Abstract

The invention discloses a method for configuring alternative and dynamic drive of Z-direction main shafts of a numerically-controlled machine tool with multiple Z-direction shafts and a system for configuring the alternative and dynamic drive of the Z-direction main shafts of the numerically-controlled machine tool with the multiple Z-direction shafts. The method mainly comprises the following steps that: a main shaft knife-changing cylinder is driven by a multi-shaft numerically-controlled control card to allow a reference axis to descend at low speed; the tool-setting on the reference axis is performed by a fixed tool-setting apparatus; a Z-direction tool-setting machine coordinate value jZ1 on the reference axis when a tool-setting in-place signal is triggered by a knife point of a knife on the reference axis, and an X-direction machine coordinate value jX1 and a Y-direction machine coordinate value jY1 which correspond to the reference axis at the moment are recorded; the jX1, the jY1 and the jZ1 are used as the workpiece origin values of the reference axis; and the main shaft knife-changing cylinder is driven by the multi-shaft numerically-controlled control card to enable the reference axis to return to a fixed safety point of the knife. The Z-direction main shafts can machine one workpiece alternatively to finish different working procedures on the same workpiece, so that save knife-changing time can be saved, and further, the machining precision and efficiency can be improved.

Description

technical field [0001] The invention relates to a Z-direction spindle wheel driving configuration method and system of a multi-Z-axis numerical control machine tool, and belongs to the technical field of multi-axis processing of numerical control machine tools. Background technique [0002] At present, in the existing numerical control technology, the most commonly used is the XYZ three-axis linkage numerical control system. For some workpieces, such as craft wooden doors, it often needs to be clamped once, and the processing is completed by using multiple forming tools in rotation, and only one of them is used for each process. To process one tool, it is necessary to perform tool calibration for each tool separately, which is very troublesome and has a certain impact on the machining accuracy and efficiency of the CNC machine tool. Therefore, it is necessary to design a Z-direction spindle wheel drive configuration for a multi-Z-axis CNC machine tool. The method and system ...

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Problems solved by technology

[0002] At present, in the existing numerical control technology, the most commonly used is the XYZ three-axis linkage numerical control system. For some workpieces, such as craft wooden doors, it often needs to be clamped once, and the processing is completed by using multiple forming tools in rotation, and only one of them is used for each process. To process one tool, it is necessary to perform tool calibration for each tool separately, which is very troublesome and has a certain impact on the machining accuracy and efficiency of the CNC machine tool. Therefore, it is necessary to design a Z-direction spindle wheel drive configuration for a multi-Z-axis CNC machine tool. Method and system thereof, in order to improve the precision and efficiency of its processing

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