Method for eliminating idle stroke and preventing collision for grinding processing

Abstract

The invention discloses a method for eliminating an idle stroke and preventing collision for grinding processing. The method is characterized in that effective grinding is divided into a black skin grinding stage, a coarse-feeding grinding stage, an enhancement grinding stage and a light-delay grinding stage, wherein idle stroke eliminating is performed by adopting fast forwarding and fast trending in idle stroke feeding before effective grinding, and a real-time current signal of a grinding wheel shaft drive motor is acquired to determine a contact state between a grinding wheel and a workpiece; fast forwarding amount and fast trending amount of the idle stroke are defined according to settings of a to-be-processed part, fast forwarding speed and fast trending speed are preset, a fast trending function test is set before the first part of the whole batch of the parts of the same specification is processed, a current value of the grinding wheel shaft drive motor is no-load current whenfast trending function test is set for forwarding, the current value of the grinding wheel shaft drive motor is set as target current when fast trending is set to be ended, target current is three times that of no-load current, and collision prevention is realized by determining whether real-time current of the grinding wheel shaft drive motor in fast trending function test reaches fast forwarding amount and fast trending amount or not for regulating target current, so that grinding efficiency and machine tool safety are improved.

Description

technical field [0001] The invention belongs to the technical field of grinding processing, and in particular relates to a void elimination and anti-collision method used in the grinding processing process. Background technique [0002] With the continuous development of modern processing technology, there are higher requirements for processing efficiency, quality and safety. In the grinding process, according to the general grinding process, the stages of black skin-rough feed-fine feed-light feed are processed effectively. The process parameters of each stage are different. In order to improve the processing efficiency, the grinding should be reduced as much as possible. Empty travel time, that is, fast forward and rapid approach before effective grinding, fast forward is fast empty stroke feed, and rapid approach is fast approaching to the workpiece, and collisions are prone to occur during the process of fast forward and rapid approach, making anti-collision It is the t...

AI Technical Summary

Problems solved by technology

Existing gap elimination and anti-collision technology is to judge the contact state between the grinding wheel and the workpiece by collecting vibration signals or sound signals. Since the vibration signals and sound signals are easily disturbed, the control is inaccurate, and it is easy to cause collision damage.