SU1747865A1 - Accessory to a meter of running out of true for testing of gear-wheels - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in engineering and repair enterprises. The purpose of the invention is to expand the functionality. This is achieved by the fact that the device comprising a housing, a carriage located on it, a measuring rod, equipped with a conical tip for measuring the radial deviations of two adjacent tooth profiles with a linear displacement transducer, is equipped with a stand in which a measuring double arm with a second transducer is mounted for controlling tangential deviations the third adjacent tooth profile gear. The deviation of the engagement pitch or the circumferential pitch is fixed by the third linear displacement transducer associated with the other two-arm measuring lever and installed in its rack. 2 Il.

Description

The invention relates to mechanical engineering and can be used in engineering and repair enterprises,

In order to control the radial beating of the ring gear, a large number of beaters of models BV-584, BV-966, BV-5015, BV-5029, BV-5035, BV-5060, BV-5077, UZP-400 MIZa, B-2M and 25002 LIZa are known. , B-10 of ChIZ, etc. They measure the radial beating of the ring gear by moving a conical or spherical tip inserted into the tooth cavity.

Deviations of the engagement pitch are controlled by the pedometers of the models BV-5070, NTs-21702 (GOST 3883-81) BV-584, BV-966, BV-5015, etc. The instruments are equipped with two

tangential coordinating and measuring, as well as reference contacts.

The disadvantage of these pedometers is their limited capabilities; they can only control the steps of engaging two profiles of the same name.

Closest to the invention is a biennier device for controlling gear wheels.

This device consists of a measuring rod with a spherical tip, which is mounted in the bienier carriage and is used to measure the radial errors of the two adjacent profiles of the gear cavity. A stand with a rotating two-arm measuring device is attached to the measuring rod.

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a lever, one of the ends of which is intended to contact one of the adjacent teeth of the wheel with the free surface, and the second one is kinematically connected with a linear displacement transducer showing tangential deviations of the tooth profile. The two shoulders measuring lever is spring-loaded relative to the measuring rod, and the spring of the measuring lever and the spring of the linear displacement transducer partially compensate each other.

A disadvantage of this device is that it allows monitoring only the interconnected radial deviations of two adjacent profiles of the depression and the tangential deviations of the third adjacent profile of the gear tooth.

 The purpose of the invention is to enhance the functionality by providing simultaneous control and deviation of both the circumferential and pitch gears of the gear.

This is achieved by the fact that the device comprising a housing, a carriage located on the housing, a measuring rod with a conical tip, a first linear displacement transducer mounted on the carriage, kinematically connected with the carriage, a rack fixed to the measuring rod, a two-arm lever with an axis, mounted on a rack and spring-loaded relative to the latter, one of the ends of which is intended for contacting the tooth wheel with the tooth profile, the second linear displacement transducer, nny on

the rack and kinematically associated with the free end of the two-arm, equipped with a second rack mounted on the measuring rod, the second two-arm lever with the axis mounted on the second rack and spring-loaded relative to the last, one end of which is designed to contact the profile of the second tooth of the controlled wheel, the third linear displacement transducer mounted on the second rack and kinematically connected with the free end of the second two-arm lever.

FIG. 1 shows a structural diagram of the device; 2 is a device for adjusting the device

The device consists of a housing 1, a carriage 2 and a measuring rod 3 with a conical tip, rigidly fixed in the carriage 2 of the housing 1 of the bin. On the measuring rod 3 racks 4 and 5 are mounted, in which two-arm gauge are mounted on axes x 6 and 7, respectively.

2

The levers 8 and 9. In rack 4, the transducer 10 linear displacements are fixed, and in rack 5, the transducer 11 linear displacements, which with their tips touch the corresponding measuring spring-loaded levers 8 and 9. The transducer 12 linear displacements are kinematically connected to the carriage 2 of the housing 1 bieniemera Stand 4 and 5 stops on the rod 3 with its screws 13 and 14

The device works as follows.

Before the measurement, the device is adjusted in the fixture (see FIG. 2) so that the distance between the conical tips of the measuring rod 3 and the sphere of the measuring lever 9 is equal to the nominal length (Sc) of the constant chord of the gear wheel along the dividing circle of radius g. moving the stand 5 along the tip 3 and fixing it in a predetermined position with a screw 13. The required distances are reached by a vertical a and horizontal h2 sets of tiles of gauge lengths,

The thickness of these tile sets is calculated using the formulas

2

op. m Z, ts.

and bc cos -j -t - “- sin yy

- rSh2 (1 - cos) - g;

sin

well

7JP7 ctg a - Sc

(2)

 Sin j - Gsh2 (1 + Sin j) - K2

where l 3.1416;

m is the modulus of the gear to be measured;

z is the number of teeth of the gear to be measured;

  radius of the sphere of two shoulders lever 9,

and the angle profile of the gear to be measured;

2 -1 the distance between the axis of the rod 3 (the axis of the prism of the device) and the side surface of the device;

fe is the distance between the apex of the cone (prism) and the installed surface of the tiles.

The values of b and k2 are assigned constructively.

When setting up the device for measuring the deviations of the engagement pitch, the rack 4 is moved along the rod 3 and secured with a screw 14 in such a position that the distance between the measured points of the profiles is equal to the nominal PES engagement step. This distance is achieved by setting the vertical b and horizontal hi sets of end gauge tiles. The thickness of these sets is calculated using the formulas

b Pbr cos a mZ

l

sin tgu Gsh1 (1 - cos a) - h

hi РЫ sin a + sin- ctg a - run (1 sln a) - Ki,

where gS1 is the radius of the sphere of the two shoulders of the lever 8;

- the distance between the axis of the rod 1 (the axis of the prism of the device) and the side surface of the device;

- the distance between the apex of the cone (prism fixture) and the mounting surface of the tiles.

The values of And and ki are assigned constructively. The device tuned to a particular gear wheel in the device is rigidly mounted in the carriage 2 of the housing 1 of the binders. The measurable gear wheel 15 is mounted with a backlash mandrel in the centers of the biemer. By moving the carriage 2, the device is brought into contact with four adjacent profiles of the gear to be monitored. The linear displacement transducer 11 provides indications of the tooth thickness deviations from the nominal value, the transducer 12 records the deviations of the two profiles in the radial

ten

15

20

25

2Q

wasps

and converter 10 measures deviations from the nominal engagement step value.

Thus, the invention allows simultaneous measurements of three parameters of a gear wheel: deviations of the tooth thickness along a constant chord, deviations of the tooth profiles in the radial direction, and deviations of the pitch of the engagement.

Claims (1)

Invention Formula A device for biennier to control gears, comprising a housing, a carriage located on the housing, a measuring rod with a conical tip, a first linear displacement transducer mounted on the carriage, kinematically connected to the carriage, a rack mounted on the measuring rod, a double-arm lever with an axis, mounted on the rack and spring-loaded relative to the latter, one of the ends of which is intended to contact the tooth profile of the wheel being monitored, the second linear variable transducer mounted on a rack and kinematically associated with the free end of the two shoulders lever, characterized in that, in order to expand its functionality, it is equipped with a second stand secured to the measuring rod, with a second two shoulders lever with an axis mounted on the second stand and spring-loaded relative to the latter, one end of which is designed to contact the profile of the second tooth of the wheel to be controlled, a third linear displacement transducer mounted on the second rack and kinematically ski connected to the free end of the second two shoulders. /five FIG. 2