SU1213342A1 - Clearance gauge - Google Patents

Abstract

The invention relates to a measurement technique and can be used to measure gaps. The purpose of the invention is to extend the functionality by enabling измер to measure j except the gap itself, more defects and to improve the accuracy of measuring thin-walled parts by eliminating the deformation of the surfaces forming the gap. To determine the gap between the thin-walled parts, a calibrated plate 2 is inserted between the surfaces to be monitored, with the arresting device 12 lowered, the torsion shaft 5 with the lobe is turned by the action of a spring and, with a certain effort, local defects can be detected between the two surfaces. 5 il. (L 5 2 II Phi 2. 1

Description

one

This invention relates to technical measurements.

The purpose of the invention is to enhance the functionality and improve the measurement accuracy of thin-walled parts.

 Fig. 1 shows an instrument for measuring gaps, a general view; FIG. 2 is a view A of FIG. on fig.Z1-1D B figure 1; Fig. 4 shows a device for measuring the distance between two surfaces; in FIG. 3, view B in FIG.

The device contains a base 1, a frame made in the form of a calibrated plate 2 with a groove 3 and a window 4, a meter made in the form of a torsion shaft 5 and a petal rigidly connected to it f whose width is less than the width of the window 4 of a calibrated plate 2, reference node 5 made in the form of a diaphragm 7 with a slit 8, a source 9 of light and a photoreceiver 10, a torsion spring 11 that connects the torsion shaft 5 with the housing 2 arresting device 12

Prnbor works as follows

An arrester 12 sets the base; a sand 6 in the window 4 is para-aster-about the plane of the Kl1 of the plate /. The air force dt calibrated p. the gap f between the surface of 13 n thin-walled surface of 14. a snrrrrrrrrrrrrrrrr; a lobe 6 under the action of torsion 1I razorachknagts and in contact with surfaces Ft13 and 14.

 BUT

13342 2

At the same time, the aperture 7 rotates at the same angle, the slot 8 of which occupies a position corresponding to a certain luminous flux from the light source 9 to the photodetector 10. Using preliminary calibration of the device and the dependence of the photocurrent of the light receiver 10 on the angle of rotation of the indicator 10 lobe measurements can be made at significant gap lengths determined by the lengths of the replaced plates 2, and local defects can be determined.

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five

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Claims (1)

Invention Formula A gap measuring instrument containing a base; a housing which is connected to the base by an indicator that can be rotated relative to the housing, and a reading unit, characterized in that, in order to expand the functionality and increase the measurement accuracy of thin-walled parts, it is provided with a spring torsion j interconnected with the housing and the meter, in the form of a calibrated plate with a groove and a window, and a meter in the form of a torsion shaft, installed) in the groove of a calibrated plate j and rigidly connected to the torsion hall and located in A petal plate window with a width smaller than the window width of a calibrated plate.  five VNIIPI Circulation 67: Order 774/51 Subscription FIG. 5 Branch ram Patent, Uzhgorod, Projecto st., 4