Elliptical Vibration Cutting Auxiliary Device Based on Tri-Piezoelectric Drive

Abstract

The invention discloses an elliptical vibration cutting auxiliary device based on three piezoelectric drives. The device includes a support mechanism, a compliant guide mechanism and a drive mechanism. The compliant guide mechanism and the drive mechanism are fixed on the support mechanism. The drive mechanism uses The point contact mode drives the compliant guiding mechanism, and the driving mechanism drives the compliant guiding mechanism to perform reciprocating motion in the x direction and to perform elliptical trajectory motion on the yz plane. The technical scheme of the present invention adopts the compound double parallel four-bar mechanism mode in the horizontal direction, which not only greatly increases the displacement in the horizontal direction, but also greatly reduces the stress on the flexible hinge moving in the horizontal direction, and improves the mechanical stability of the mechanism. Service life; the technical solution of the present invention adopts a combined flexible hinge with two ends connected in series in the middle of the yz plane and two parallel piezoelectric joints to realize high-frequency movement under low-coupling operation; this solution adopts the integration of compliant guide units , reducing the error of traditional assembly.

Description

technical field [0001] The invention relates to ultra-precision cutting, in particular to a three-piezoelectrically driven large-stroke elliptical vibration cutting auxiliary device. Background technique [0002] With the development of production and technology, in recent years, some hard and brittle materials, especially some non-metallic materials, have been widely used in the fields of electronics, optics, instrumentation, aerospace and civil industries due to their excellent performance. The precise and ultra-precision machining of materials is very difficult. Traditional processing methods such as grinding can no longer meet the precision requirements of modern industrial development. Therefore, the precision and ultra-precision machining technology of hard and brittle materials with excellent performance has become a new subject. It has become the focus of attention of many scholars. [0003] Studies by many scholars have shown that it is very feasible to seek a new ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a large-stroke elliptical vibration cutting auxiliary device based on three piezoelectric drives to solve the problems of short service life, small machining stroke and low vibration frequency in the prior art.

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