SU1522020A1 - Device for measuring deviation of shape of internal spherical surfaces - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to improve the accuracy and reduce the measurement time. The device is equipped with a hollow rod 14 with a pneumatic tip 16 and a swing assembly of the rod 14 with a cam 12, interacting with the rod 14, and a cup 11 with slots on the wall. Inside the rod 14, a linear displacement transducer is mounted, connected to the tip 16 and through the information input unit with the computing unit. In the working gap between the end face of the tip 16 and the surface of the controlled product 18 serves compressed air. The swinging unit of the rod 14 is driven into rotation, which through the copier 12 and the rod 14 communicates a complex movement in the form of a spiral to the tip 16, which, if there is an error in the shape of the monitored product 18, changes the air pressure in the working gap through a linear movement transducer information input node. The signal is fixed at the instants of passage of the slits in the beaker 11 of the beam between the photodiode 20 and the illuminator 21 and periodically enters the computational node through the amplifying equipment. The magnitude of the error is recorded at the points of reading of the measurement results and in digital form is displayed on the screen of the ADC of the computing node. 1 hp f-ly, 8 ill.

Description

WITH

1 hd hd

11 with chphoresis on the wall. A linear displacement transducer is installed inside the rod 14, connected to the tip 16 and through the information input unit with the computing unit. Compressed air is supplied to the working gap between the end face of the tip 16 and the surface of the tested product 18. The rocking unit of the rod 14 is rotated. the rod 14 communicates a complex movement in the form of a spiral to the tip 16, which, in the presence of an error in the execution of the form: controlled, divided 18 due to the pressure

air in the working gap delivers a continuous signal through the linear displacement transducer to the information input unit. The signal is recorded at the moments when the slot 11 of the beam passes between the cells of the photodiode 20 and the illuminator 21 and periodically enters the computational node through the amplifying recording equipment. The magnitude of the error is recorded at the reading points of the measurement results and in digital form is displayed on the screen of the ADC of the computing node, 1 hp. f-ly, 8 ill.

The invention relates to a measurement technique, namely, devices for monitoring spherical surfaces.

The purpose of the invention is to improve the accuracy and shorten the measurement time by supplying the measuring machine with a rod with a pneumatic handpiece and a boom booster with a copier,

FIG. 1 shows a measuring unit; general view; FIG. 2 is a block diagram of the deviceJ in FIG. 3 shows the pneumatic tip in FIG. 4 — base unit, general view; FIG. 5 is a view A of FIG. 4; neither FIG. 6 — trajectory of movement of the pneumatic tip; in fig. 7 is a swing boom assembly} in FIG. B - section BB in FIG. 7

The device contains a measuring installation 1, the node 2 input information and computing node 3 on the basis of a computer.

The measuring unit is made in the form of a hollow body 4 with a base surface 5, a linear displacement transducer 6 and a base unit made in the form of four adjustable supports 7 and two stops 8j mounted on the body 4. Inside the body 4 there is a boom swing unit made in the form of a screw 9 with a drive 10 installed normally on the base surface 5 rotatably, a cup 11 with a radial groove on the bottom and slots on the walls mounted on the screw 9, and a cam 12 mounted on the pint 9 returnable post singer

movement. On the base surface .5, a rod 14 is mounted with a swivel 13, which can be rotated, at one end of which, interacting with the groove of the glass 11, an adjustable counterweight 15 is installed, and at the other end there is a pneumatic tip 16 with the possibility of translational movement along the rod. Inside the boom, a linear displacement transducer 6 is installed, connected by channels 17 with a pneumatic tip 16. The surface area of copier 12 is reduced relative to the surface area of the tested product 18 in proportion to the ratio of the lengths of the parts of the rod 14 into which it is divided by a hinge. 13. The end of the rod 14, which interacts with the cam 12, is spring-loaded to it by a spring 19. The information input unit 2 is made in the form of a photodiode 20 and an illuminator 21 mounted on the base surface 5 of the housing 4 on different sides of the wall of the cup 11, recording equipment and. measurement readout devices and electrically connected to the linear displacement transducer and the computing node 3. Lines 22-29 are the lines of the readout points of the measurement results.

The device works as follows

In the initial position, the pneumatic tip 16 is at the point of measurement start (Fig. 6).

Controlled product is installed on the supports 7 and fixed stops

8. Through the channels 17 of the rod 14 serves compressed air into the working gap between the end face of the tip 16 and the surface of the controlled product 18.

Include the actuator 10, which transmits the rotation of the screw 9 with a glass

11, the radial groove of which rotates the rod 14 around the hinge 13. Copier

12, moving along the screw 9, reports a swinging motion to the rod 14. Thus, the pneumatic tip 16 performs a complex movement along the trajectory shown in FIG. 6, and in the presence of errors in making the shape of the surface of the product under test. 18, by changing the air pressure in the working gap, delivers a continuous signal through

Claims (2)

1. Device for measuring the shape deviation of internal spherical five 0 five 0 five 0 surfaces, containing a measuring unit, made in the form of a solid case with a base surface, a linear displacement transducer and a base unit mounted on the body parallel to the base surface, an information input unit and an advanced unit, characterized in that, in order to improve accuracy and reduce measurement time, it is equipped with a hollow rod hinged on the base surface and its swing knot, executed as a normally installed base screw surface with its drive rotated mounted on the screw of the cup with a radial groove on the bottom and slots in the wall and mounted on the screw with the ability to return and post movement of the copier, on one end of the rod, interacting through the slot of the cup with the copier, a counterweight is installed, and on the other - a pneumatic tip , the ratio of the surface areas of the copier and the surface of the base unit is equal to the ratio of the lengths of the parts, the rod into which the hinge divides it, the linear displacement transducer is installed inside the rod and connected to the pneumatic tip ohm and through the information input node - with a computing node. one 2. The device according to claim 1, wherein the information input unit is completed in the form of a photodiode and an illuminator mounted on the body on opposite sides of the wall of the glass and fixing the position of the slits. Fi.g P P Air. Fig.Z eight FIG. H -I The start of the measurement Accurate reverse 25 View / G at FIG. five 26 21 Fi9.6 Editor L.Pcholinsk Compiled by V.Zotov Tehred.M.Hodanich fV Par.8 Proofreader L. Patay