Method and device for controlling regression of feeding shaft of processing center to reference point

Abstract

The invention discloses a method for controlling regression of a feeding shaft of a processing center to a reference point, which comprises the following steps of: electrifying a machine-tool control device; starting a feeding shaft regress mode; rapidly moving the feeding shaft to a machine-tool reference point at a preset speed; judging whether the feeding shaft reaches a decelerating regress area in the process of rapidly regressing the feeding shaft, and regressing to the machine-tool reference point at a preset low speed after reaching the decelerating regress area; and before the step of starting the feeding shaft regress mode, judging whether the feeding shaft is in an inlay area, if yes, starting the feeding shaft at the preset inlay speed and raising an alarm, at this moment, manually moving the feeding shaft to a fast regress area and then starting the feeding shaft regress mode, and if not, starting the feeding shaft regress mode. Position data of the feeding shaft relative to a machine-tool coordinate system is read and judged through the machine-tool controller, different zones are differentiated to ensure that the feeding shaft regresses the machine-tool coordinate reference point by adopting the corresponding speed, thus the collision accidents possibly occurring in the process of regressing the feeding shaft is avoided.

Description

technical field [0001] The invention relates to a control method and a control device of a machining center, in particular to a control method and a control device for a feed axis returning to a reference point of a machining center with an incremental position detector. Background technique [0002] In the machining centers with incremental position detectors currently used in the prior art, after the power is turned on each time, in order to establish the coordinate system of the machine tool, the feed axis must first perform the operation of returning to the reference point. During the return process of the feed axis First, you need to select the direction key to determine the direction of return. The return area is divided into a fast return area and a deceleration return area. In the deceleration return area, the feed axis touches the deceleration switch with a certain length of deceleration bumper. The length of the deceleration zone is the length range of the decelera...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this return control method is that it is between the end point of the deceleration return area and the switch limit point of the feed axis of the machine tool (the area limit switch during normal processing of the feed axis, and the normal processing speed of the feed axis is lower than that of high-speed return). Speed) is the blind motion zone of the feed axis. If the feed axis is in this zone when it is turned on, and the distance to the switch limit point is too close, if the operator does not judge this and uses the wrong return direction to start the return During operation, the feed shaft will crash into the normal working range at a high-speed return speed, causing accidents

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