Automatic indexing control method and device for fully-automatically-exchanged multidirectional swing head

Abstract

The invention relates to the field of numerically-controlled machine tools, and specifically relates to an automatic indexing control method and device for a fully-automatically-exchanged multidirectional swing head. The automatic indexing control method for the fully-automatically-exchanged multidirectional swing head comprises the following steps: determining a single rotating coordinate axis needing indexing control, and sending an automatic indexing instruction for the corresponding rotating coordinate axis; locating a main axis to a loosening position for the rotating coordinate axis according to the automatic indexing instruction; loosening the rotating coordinate axis; switching a control mode for the main axis into a position control mode, and enabling the main axis to rotate to drive the rotating coordinate axis to a target angle; detecting the position of the rotating coordinate axis, and carrying out angle correction for the rotating coordinate axis; and clamping the rotating coordinate axis, and completing indexing for the rotating coordinate axis. According to the invention, gap difference between an A axis and a C axis is solved by separately compensating and correcting a tooth gap of the A axis and a tooth gap of the C axis, so that a tooth gap compensation value is more accurate. The C axis is driven to swing left and right once until upper teeth and lower teeth of the C axis are clamped, so that the problem of tooth jacking of the C axis due to tooth gap change caused by heating is solved.

Description

technical field [0001] The invention relates to the field of numerical control machine tools, in particular to a method and device for automatic indexing control of a fully automatic exchange multi-directional swing head. Background technique [0002] In CNC machine tools, the three linear coordinate axes are generally called X, Y, and Z axes, and the rotation axes that rotate around these three axes are called A, B, and C axes, and the C axis is the movement that rotates around the Z axis. axis. C-axis control refers to treating the C-axis as a servo axis, called spindle contour control, which can participate in the interpolation control of other coordinates. If the spindle motor is used to control the C axis, it is called the Cs axis. In this case, the rotation position (rotation angle) of the spindle in the lathe system is not controlled by the feed servo motor, but is realized by the spindle motor of FANUC Corporation of Japan. The position of the spindle (Angle) is de...

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Problems solved by technology

[0007] The present invention aims at the above-mentioned defects existing in the prior art, and proposes an automatic indexing control method and device for a fully automatic exchange multi-directional swing head. For the problem of backlash change, the present invention solves the gap difference between the A-axis and the C-axis by separately correcting the backlash of the A-axis and the C-axis, so that the compensation value of the backlash is more accurate

By driving the C-axis to swing left and right once until the upper and lower teeth of C are clamped, the problem of the top teeth of the C-axis caused by the change of the tooth gap caused by heat is solved.

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