Loading mechanism for testing rigidity of hydrostatic guide rail

Abstract

The invention discloses a loading mechanism for testing the rigidity of a hydrostatic guide rail. In the loading mechanism, a stand column of a vertical guide rail unit is fixed on a base; a transverse guide rail mounting plate is mounted on a ball screw I in the stand column; a horizontal guide rail unit is mounted on the transverse guide rail mounting plate; a worktable in the horizontal guide rail unit is mounted on a ball screw II; a connecting bearing seat in an indexing unit is mounted on the worktable; and a fixed seat in a loading force applying unit is mounted on an upper adjusting plate in the indexing unit. The horizontal guide rail unit, the vertical guide rail unit and the indexing unit are arranged so that the adjustment of a space position of a loading force applying mechanism is realized and the loading force applying mechanism is adaptive to different guide rails; a differential nut in the loading force applying unit realizes slow feeding of a screw in the vertical direction, so that accurate application of a loading force is realized; and meanwhile, the loading force applying unit is internally connected with a sensor so that the loading force can be measured in real time. According to the loading mechanism disclosed by the invention, loss-free application of the loading force and the adjustment of positions, directions and sizes in a relative large range can be realized.

Description

technical field [0001] The invention belongs to the field of precision and ultra-precision machining, and specifically relates to a static pressure guide rail stiffness test loading mechanism, the structure can be adjusted to adapt to guide rails of different sizes, and the direction of loading force can be adjusted to meet the measurement requirements of the vertical stiffness and angular stiffness of the guide rail. The magnitude of the force can be adjusted continuously and precisely. Background technique [0002] At present, with the wide application of hydrostatic guide rails, the requirements for stiffness detection of hydrostatic guide rails are getting higher and higher. In previous stiffness tests, weights of different weights were added as variable loads. However, when weights are placed on the slide table of the guide rail, there will be a slight movement of the slide table, and the movement of the slide table will cause deviations in the measurement data of the ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of low efficiency, discontinuous loading force, inability to generate tension and easy generation of displacement errors in the static pressure guide rail stiffness test device in the prior art, the present invention provides a static pressure guide rail stiffness test loading mechanism

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