Method for dynamically measuring guide rail linearity

Abstract

The invention discloses a dynamic measuring method of guide rail straightness, belongs to the methods that are related to the technical field of photoelectric measurement, aims at solving the technical problem of providing a method that dynamically measures guide rail straightness, and adopts the following technical proposal: (1) an optical measuring table is prepared; (2) a component to be measured is placed on the left half part of the table, and a linear motion actuator component drives a plane mirror that is arranged on a mirror shelf to move along a guide rail synchronously with a slide block; (3) an autocollimator is placed on the right side of the component to be measured and is butt-jointed with the component to be measured, the plane mirror reflects parallel light that is emittedfrom the autocollimator into the view field of a light tube ocular glass; (4) a signal receiving and data processing system is placed on the right side of the autocollimator, and the focal plane of the light tube ocular glass is led to be coincided with the receiving plane of a CCD receiver; (5) the linear motion actuator component drives the slide block and the plane mirror to move in a measuringrange along the guide rail, and a microprocessor is used for determining the change of the relative displacement of a reticle that is reflected by the plane mirror, thus realizing the measurement ofguide rail straightness.

Description

technical field [0001] The invention belongs to a method for dynamically measuring the straightness of a guide rail and relates to the technical field of photoelectric measurement. Background technique [0002] With the continuous development of scientific and technological progress, the precision requirements for some optical precision instruments are constantly increasing. Some optical instruments need to move linearly on the guide rail during work. The straightness of the guide rail directly affects the accuracy of optical instruments. Therefore, it is necessary to detect the straightness of the guide rail installed on the large photoelectric equipment. [0003] In the past, the detection of the straightness of the guide rail on some photoelectric instruments relied on the eyes to judge the change of the clamping distance in the eyepiece of the autocollimator to judge the straightness of the guide rail. Long-term observation caused visual fatigue and produced a large visu...

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Problems solved by technology

[0003] In the past, the detection of the straightness of the guide rail on some photoelectric instruments relied on the eyes to judge the change of the clamping distance in the eyepiece of the autocollimator to judge the straightness of the guide rail. Long-term observation caused visual fatigue and produced a large visual error, and it is impossible to dynamically and continuously measure the straightness of the guide rail

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