SU1509586A1 - Method of adjusting device for measuring plane angles - Google Patents

Abstract

The invention relates to optoelectronic instrument making and can be used in the alignment of photoelectric autocollimators. The purpose of the invention is to improve the accuracy of the adjustment by eliminating the systematic error caused by the inclined position of the autocollimator output slit. To do this, set the pyramid of the reflecting surfaces of the angular measure, establish a flat mirror and get multiple reflections of the autocollimator radiation flux between the mirror surface of the angular measure and the flat mirror. A sequence of images of the brand of autocollimator converted into an electrical signal is recorded, two measured values of the position of the angular measure are recorded and, comparing them, adjust the position of the output slot of the autocollimator, until the difference between these measurements is equal to zero. 2 Il.

Description

The invention relates to optoelectronic instrument making and can be used in the alignment of photoelectric autocollimators.

The purpose of the invention is to improve the accuracy of the alignment of the device for measuring flat angles.

Figure 1 shows a diagram of the device that implements the proposed method; figure 2 - the position of the output slit of the autocollimator and the projection of the autocollimation brand with multiple reflections.

A device that implements this method contains a measuring table I with angular measure 2 located on it, an axis of rotation 3, a flat mirror 4, a photoelectric autocollimator 5, a logic unit 6 and a computing unit 7, an output slit 8 of the projection of the autocollimation mark 9. The device realizing this method works as follows.

On the measuring table 1, an angular measure 2 is placed and the sides of the different signs with respect to the axis of rotation 3 are attached to its sides. At a distance from the measuring table 1, a flat mirror 4 is fixedly mounted. The radiation flux from the autocollimator 5, which irradiates the angular measure 2, reflects from it falls on the flat mirror 4 and after repeated reflections returns to the autocollimator 5, creating an image of the 9 the plane of location of its exit slit 8 (Fig. 2).

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The image of the mark 9 is mixed, since the sides of the angular measure 2 are inclined to the radiation flux at a certain angle. When the measuring table 1 rotates, at the output of the autocollimator 5 a sequence is formed by a pulse, the distance between which is proportional to the angular displacement of the output DI1 8 relative to the plane of rotation of the measuring table 1.

Logic unit 6, connected by the input to the output of the autocollimator 5, generates an electrical signal proportional to the angular position of the brand 3 autocollimator. The signal from the output of logic block 6 is fed to the input of the computing block 7, which determines the measured value of the angular position of the measure side and calculates the difference between the two selected images of the autocollimation mark.

Claims (1)

Invention Formula The method of aligning the device for measuring flat angles, based on measuring the angular angles of the angular measure, characterized in that, in order to improve the accuracy of the alignment, the pyramidal reflecting surfaces of the angular measure are set, the flat mirror is set at an angle to the axis of the autocollimator, and the autocollimator is repeatedly reflected between the specular the surface of the angular measure and the flat mirror, register the image of the brand of an autocollimator, f CSIRO pokazayi autocollimator for two arbitrarily chosen values of the measured angle and comparing their readings, adjusts the position of the slit autocollimator vanishing ra znsGsti indications therebetween.  R FIG. FI.2