Linear feeding mechanism for machine tool

Abstract

The invention provides a linear feeding mechanism for a machine tool. The linear feeding mechanism causes a bearing capacity to be strong and a motion to be stable and has a high response speed. The linear feeding mechanism comprises an upper sliding plate and a lower base, wherein the bottom of the upper sliding plate is tightly connected to a guide rail; the guide rail is embedded in a guide rail slot of the lower base; the bottom of the upper sliding plate is supported on the lower base; the linear feeding mechanism is characterized in that a linear motor is mounted in a cavity between the upper sliding plate and the lower base; a primary of the linear motor is tightly connected to the bottom of the upper sliding plate; a secondary of the linear motor is tightly connected to the upper end face of the lower base; the linear motor is located in a groove which is formed by upper guide rails on two sides of the linear motor; the upper guide rails are tightly connected to the lower base; the primary of the linear motor is supported on the secondary of the linear motor; a throttle is arranged in the upper sliding plate; oil paths are arranged in the upper sliding plate and the guide rail; oil cavities are arranged between friction surfaces of the guide rail, the lower base, between friction surfaces of the upper sliding plate and the lower base, between friction surfaces of the upper sliding plate and the upper guide rails as well as between friction surfaces of the guide rails and the upper guide rail; and the throttle is respectively communicated with the oil cavities through the oil paths.

Description

technical field [0001] The invention relates to the technical field of machine tool structures, in particular to a linear feed mechanism of a machine tool. Background technique [0002] With the development of industry, there are more and more non-circular hole parts, and the feed mechanism is required to have the characteristics of fast response and high rigidity. The existing structure that realizes linear feeding through a ball screw has small bearing capacity, inaccurate positioning, unstable movement, and slow response speed. Contents of the invention [0003] In view of the above problems, the present invention provides a linear feed mechanism of a machine tool, which has large bearing capacity, stable movement, and fast response speed. [0004] The linear feed mechanism of the machine tool has a technical solution as follows: it includes an upper slide plate and a lower base, the bottom of the upper slide plate is fastened to a guide rail, the guide rail is emb...

AI Technical Summary

Problems solved by technology

The existing structure that realizes linear feed through a ball screw has small bearing capacity, inaccurate positioning, unstable movement, and slow response speed

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