Indexable blade grinding positioning error compensation method

Abstract

The invention discloses an indexable blade grinding positioning error compensation method and belongs to the field of cutter grinding. The method comprises steps of firstly, establishing a workpiece coordinate system, a tower coordinate system and a machine tool coordinate system; clamping a standard square blade with a relief angle beta between the two tips, acquiring coordinate values of a linear edge of the square blade in a machine tool coordinate system in the X direction when a C axis turns to -beta and beta respectively by adopting contact measurement, and calculating deviation values of a rotation center of the end surface of the fixed tip and a rotation center of the tower in the X and Y directions according to the measured values; calculating a conversion relation from the workpiece coordinate system to a tower coordinate system and a machine tool coordinate system according to the deviation value; and finally, calculating a positioning error compensation formula of the relief angle blade and the chamfering blade and compensating the error into a blade grinding theoretical calculation formula. Error automatic compensation is adopted, the requirement for machine tool assembling precision is greatly lowered, on the premise that the blade machining precision is guaranteed, the blade replacing efficiency is improved, working hours are greatly saved, cost is reduced, and meanwhile the working intensity of workers is lowered.

Description

technical field

[0001] The invention relates to the field of tool grinding, in particular to a method for compensating positioning errors in grinding of indexable inserts. Background technique

[0002] There are many types of indexable blades, and the use of peripheral edge grinders should facilitate the replacement of various blades. In the peripheral grinding machine, the tower for clamping the blade is composed of two parts: 1. The fixed top part and the floating top part are used to clamp the blade. The center of rotation of the fixed top end face is the center of the blade positioning end face and the center of the workpiece coordinate system calculated by theoretical coordinates; 2. The part of the tower that rotates around the base is used for grinding blades with rear angles. The axis of rotation around is called the C-axis, and the intersection of the C-axis and the base is the center of rotation of the tower. The center of the fixed top end surface should coincid...

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