Machining method for controlling fixed length cutting of workpiece by tool, cutting device and machine tool

Abstract

The invention relates to a machining method for controlling fixed length cutting of a workpiece by a tool, a cutting device and a machine tool. The machining method comprises the steps of: detecting the position of the workpiece to obtain a position measurement signal; detecting inertial filtering on the position measurement signal by a cutting state parameter of the tool to obtain a first filtervalue; obtaining a second filter value from the position measurement signal and the first filter value; calculating a control compensation value from a first filter error, the second filter value andthe cutting state parameter; and introducing the first filter value and the control compensation value into a virtual spindle model of the tool to calculate a control signal for the cutting process. The method solves the technical problem that the cutting position is difficult to meet the relevant requirements by simply using the inertial filtering to process the position signal of the workpiece during the cutting process. By compensating the filter position, the speed of the cutting tool at the non-cutting point is smooth and the vibration is small, so that the cutting accuracy at the shear point is improved, and the quality of the machined workpiece is significantly improved.

Description

technical field [0001] The invention relates to the field of workpiece processing, in particular, the invention relates to a processing method, a cutting device and a machine tool for controlling a tool to cut a workpiece to a fixed length. Background technique [0002] When the tool cuts the workpiece to a fixed length, especially in the case of flying shears cutting steel plates, the steel plate flying shears need to use an encoder to detect the speed and position of the steel plate, and then use a servo motor to track the position of the steel plate. The rotation speed of the flying shear has a synchronous section, an acceleration section and a deceleration section according to the length of the shearing target. For example, when the length of the sheared steel plate is less than the perimeter of the flying shear, the flying shear needs to be accelerated during operation, that is, the acceleration section. Before the steel plate enters the flying shear machine, it has go...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a processing method, a cutting device and a machine tool for controlling a tool to cut a workpiece to a fixed length, so as to at least solve the technical problem that the cutting accuracy is difficult to meet the relevant requirements in the cutting process by simply using inertial filtering to process the position signal of the processed workpiece

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