SU1303819A1 - Device for measuring perpendicular alignment error of angle standards - Google Patents

Abstract

The invention makes it possible to measure the deviation from the perpendicularity of precision parts. The aim of the invention is to improve the measurement accuracy by mirroring the error of the monitored angle and / f / 7 / (L DO 00. &Amp;

Description

shows of the autocollimator relative to the part being monitored on a flat face of the template, - Direct the radiation of the autocollimator 1 to a template of two flat plates 2,3 and reflect the radiation beam from one of the plates 2, send it to the mirror 5, Reflect the beam N times between the surface of the template and a mirror. Build an image of the re-reflected beam on the measuring scale of the autocollimator 1, fixing the image displacement, turn the table 6 by 1 VO, again re-send the beam with a mirror, forming its image on the measuring scale of the ocular micrometer. Adjusting the spatial Invention relates to a measurement technique and can be used to measure the deviation from the perpendicularity of precision parts in instrument and mechanical engineering.

The aim of the invention is to improve the measurement accuracy due to the mirror multiplication of the error of the monitored angle and the display of the autocollimator relative to the monitored part on the flat face of the pattern.

Fig, 1 shows a diagram of the proposed device; FIG. 2 shows the location of the autocollimator, the additional mirror and the lateral flat surface of the angular measure in the horizontal plane at different angles of rotation of the measure relative to the additional mirror; Fig, 3 - the same, in a vertical plane.

The device contains (FIG. 1) an autocollimator 1, a pattern consisting of two flat plates, for example, end measures 2 and 3, rubbed together along a common surface 4, a mirror 5, angled to the optical axis of the autocollimator 1, a table, for example goniometer table 6, designed to install a controlled angular measure on it.

The drawing also shows the vertical axis 7 of the rotation of the table 6 and U is the angular deviation of the general position of the table 6, so that both autocollimadic suppurative images are mixed for two opposite positions of the table with the optical axis of the autocollimator. Replace the template on the table with a controlled angular measure. The radiation of the autocollimator 1 is directed to its lateral flat surface, providing N re-reflections of the measurement beam between this surface and the mirror 5, form an image of the pre-reflected N times of the beam on the measuring scale of the autocollimator, and by the offset value images are judged on deviation from perpendicularity, 3 Il.

surfaces 4 patterns on from axis 7 of rotation of table 6,

In FIGS. 2,3, there are indicated: a lateral flat surface of an angular measure 8 or a template; (f is the angle between the optical axis of the autocollimator 1 and the plane of the additional mirror; o is the rotation of the side surface of the angular measure (template) to the optical axis

autocollimator,

The device works as follows.

The beam of radiation from the autocollimator 1 is directed to the free part

the ground plane of one of the two template plates located on table 6, reflect a beam of radiation from it, sending it to a mirror 5 angled (to the optical axis of the autocollimator 1 and forming a mirror multiplier together with the flat surface of the template or angle measure)

In the case when the vertical projection of the common surface of the template 4 is perpendicular to the axis of the autocollimator 1 (oi, O, fig 2a), the retroreflected beam builds an image in the autocollimator that is not displaced in the horizontal plane. If the angle between the axis of rotation 7 and the measuring plane, which is a continuation of the surface 4, is equal to d, then

3

the angle between the incident and reflected radiation in the vertical plane is 2d (Fig. 3a).

When the table with the template is rotated by angle 0 (Fig. 2), when the radiation beam falls on the measuring surface of the template, is reflected from it and comes to an additional hole 5 at an angle of 90 °, the projection of the retroreflected beam of the horizontal plane coincides with the incident beam. If the angle between the vertical axis of rotation of the table and the measuring plane is equal to d., Then the angular mismatch between the output and input beams of the autocollimator in this case is 4 b (Fig. 38).

Turning table 6 with the template, changing the angle between the planes, fusing the mirror multiplier, as a result of which, at different angular positions of the template, the light beam experiences a different number of re-reflections between the plate 2 of the template and the additional mirror, which results in a different amount of offset of the autocollimation image in vertical plane

To maximize the shift of the autocollimation image corresponding to the N rereflections in the mirror multiplier, this value is determined, after which the goniometer table is turned 180. The radiation is directed to the flat surface of the plate 3, which is a continuation of the measuring plane of the plate 2. The offset of the autocollimation image is again determined after N re-reflections of the radiation beam between the template plate 3 and the mirror 5.

Based on the position of the autocollimation images at two opposite positions of the table 6, a judgment is made about the deviation from the perpendicularity of the plane of the table to the axis of rotation.

Regulating the spatial position of the table 6, combine avtokol194

Lima images for both opposite positions of the table with the optical axis of the autocolumnator, thus completing the exhibition of the plane

table strictly parallel to the optical axis of the autocollimator. After that, the template is replaced with a controlled angular measure 8, its base is placed on the table and the radiation of the autocollimator is directed to its lateral flat surface, N deflections of the radiation beam between it and the mirror 5 are provided, smoothly rotating the table from the initial position ( h (. O).

A re-reflected N beam of radiation is received in the autocollimator, its image is built on the measuring grid of the o-ray p-micrometer of the autocollimator. The vertical offset of the horizontal line of the autocollimated image of the brand of autocollimator is measured. According to the magnitude of this displacement, a deviation from the perpendicularity of the measuring surface of the angular measure to its base is judged,

Claims (1)

Invention Formula A device for measuring the deviation from the perpendicularity of the angular measures, containing an autocollimator with an eyepiece with a p-micrometer, a table with a counting device mounted for rotation around its axis and designed to accommodate a controlled angular measure on it and installed on; The table is a template, characterized in that, in order to increase the accuracy, the template is made of two plates, ground to one another by flat edges along parts of their surface, and the device is equipped with a mirror, which is installed at an angle to the optical axis of the autocollimator and to the ground edges of the template, with the formation of a mineral multiplier with them.  N a 8 (3} H 9 cC, 0 f f7 / / iJ /. Fig.z FIG. 2 Compiler N.Sopoukhina Editor M.Kelemesh Tehred N.Glushchenko Proofreader M.Pojo Order 12U5 / 39 Circulation 678. Subscription VNII11I USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., A