A kind of damping mechanism of tool holder turntable of gear hobbing machine

Abstract

The invention discloses a gear hobbing machine cutter frame rotating plate damping mechanism. A cutter frame rotating plate is supported on a slide plate in a rotating manner by virtue of a rotating shaft; a servo motor drives a deceleration shaft to rotate by virtue of a division worm gear pair, a small division gear on the deceleration shaft is constantly engaged with a large division gear fixed on the cutter frame rotating plate, and a positioning disc and an annular pressure plate are arranged between the cutter frame rotating plate and the slide plate; one end of the positioning disc is large, one end of the positioning disc is small, and a large-diameter section of the positioning disc is arranged between the large division gear and the annular pressure plate; a group of piston holes is circumferentially formed in one side, adjacent to the large-diameter section of the positioning disc, of the annular pressure plate, each piston hole is internally matched with a piston in a sliding manner, the bottom of each piston hole is communicated with a corresponding oil hole on the annular pressure plate, and the oil hole is communicated with an axial oil inlet hole on the slide plate by virtue of an axial oil through hole on the positioning disc. The division of the cutter frame rotating plate is mainly realized by virtue of the division worm gear pair and a division gear pair, the locking of the cutter frame rotating plate is realized by virtue of the movement of the piston, and the angular precision of the cutter frame rotating plate can be improved.

Description

technical field [0001] The invention belongs to the field of gear hobbing machines, and in particular relates to a damping mechanism of a tool holder turntable of a gear hobbing machine. Background technique [0002] At present, the locking of the tool holder turntable of the CNC gear hobbing machine is generally realized by the self-locking of the worm and worm gear pair. On the vertical gear hobbing machine, the hobbing machine slides are placed vertically, and the tool holder turntable on the slide plate is connected to the hob. Due to the cutting load and the self-weight of the tool holder, the overturning moment of the worm and worm gear pair is very large, and because the worm and worm gear pair is an index pair for the rotation angle of the tool holder, this seriously affects the corner accuracy of the tool holder turntable; at the same time, due to the There is a gap with the slide plate, and the cutting force will vibrate the tool holder and turntable, which will af...

AI Technical Summary

Problems solved by technology

Due to the cutting load and the self-weight of the tool holder, the overturning moment of the worm and worm gear pair is very large, and because the worm and worm gear pair is an indexing pair for the rotation angle of the tool holder, this seriously affects the corner accuracy of the tool holder turntable; There is a gap between the slide plate and the cutting force will cause the tool holder and turntable to vibrate, thus affecting the machining accuracy

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