SU1375938A1 - Device for checking position of key slots in parts - Google Patents

Abstract

This invention relates to a measurement technique. The aim of the invention is to increase the productivity of control and the expansion of technological capabilities. This is achieved by using a two-sided two-stage link in combination with a summing mechanism, which allows one to control using a single indicator in a wide range of dimensions of parts on both cylindrical and conical surfaces. The control device is based in a controlled keyway with an alignment key. keys 3- Measuring unit is made in the form of two diverging sliders 9 and 10, to which the measuring tips are attached. The sliders, through the double-sided link and the hinge 13, are connected to the movable stem 12, which interacts with the indicator 27. With an asymmetrical arrangement of the controlled keyway, the sliders are unequal with respect to the average position of movement, the difference of which is transmitted through the slide and the stem to the indicator. 2 Il. with iS (L with | sd with PO eo Fi1.}

Description

The invention relates to a measurement technique, namely, devices for controlling the arrangement of key slots in parts, on shafts, in openings, on cylindrical and conical surfaces.

The purpose of the invention is to increase the productivity of control and the expansion of technological capabilities.

The goal is achieved by using a two-step, two-sided backstage in the device, which allows control of the arrangement of keyways using one indicator without reconfiguration, over a wide range of dimensions of parts, on cylindrical and conical surfaces.

FIG. 1 shows a device for controlling the arrangement of keyways in parts, a general view; Fig. 2 is a schematic diagram of the device.

The device comprises a housing 1, symmetrical with respect to axis 2, orienting a key 3, consisting of two cam 4 and 5 parallel with each other and axis 2, mounted in housing 1 with the ability to move in a direction perpendicular to the plane of symmetry passing axis 2 At the ends of the cams 4 and 5 there are gear racks 6 with an oblique tooth, with which the racks interact on the bar 7 installed in the housing 1 with displacement along its plane of symmetry with the help of screw 8.

In the housing 1 in the respective guides, made perpendicular to the axis 2, sliders 9 and 10 are installed, which can move under the action of the springs 11. In parallel with sliders 9 and 10, the moving stem 12 is mounted in the housing 1, connected with a hinge 13, located in the middle part of the stem 12, with a two-sided, symmetrical with respect to the stem 12, the slide 14, having two degrees of freedom of rotation relative to the stem 12 and moving with it. G using crackers 15 and 16, the link 14 is associated with sliders 9 and 10.

If the device is designed to control the placement of the keyways in the holes of the parts 17, the tips 18 and 19 are attached to the sliders 9 and 10, the springs 11 are made in

the form of compression springs that move the sliders 9 and 10 from axis 2

When appointing a device for controlling the location of the keyways on the shafts 20, the lugs 21 and 22 are attached to the sliders 9 and 10 (Fig. 1 is shown in dotted lines), the springs 11 are in the form of extension springs to allow the sliders 9 and 10 to move in the axis direction 2

The movement of the sliders 9 and 10 is limited by the stops 23 and 24. The rod 12 has a toothed rack 25 for transmitting movement via sector 26 to indicator 27.

The device works as follows.

In the initial position, the sliders 9 and 10 are compressed by the springs 11 to the stops 23 and 24. The indicator 27 is set to zero. The device is mounted on: the test piece 17 or the shaft 20 so that the alignment pin 3 is inserted into the controlled keyway of the part up to its bottom, and the measuring tips 18 and 19 or 21 and 22 come into contact with the surface of the test piece. Using the screw 8, the bar 7 is moved and the cams 4 and 5 of the orienting key 3 are opened to tightly contact the sides of the controlled keyway.

Indicator 27 was used to count the keyway location. If the keyway is located symmetrically with respect to axis 2, the movements of the sliders 9 and 10 are the same relative to it, the slide 14 rotates in the hinge 13, without causing it to move from the axis 2 and moving the stem 12. Indicator 27 in this case corresponds to zero. If the keyway is located offset from axis 2, the movements of the sliders 9 and 10 relative to this axis are not the same. The link 14 is rotated in the hinge 13, and also further rotated relative to the slide, the amount of movement of which is smaller. As a result, the hinge 13 and the rod 12 receive an additional movement in the direction of the slide, the course of which is greater. The indicator 27 in this case shows the value corresponding to the amount of displacement of the keyway from the axis 2.

Claims (1)

Invention Formula A device for controlling the location of the keyways in the parts, comprising a housing, an orienting key and a measuring unit with an indicator, that, in order to increase the monitoring performance and expand the technological capabilities, the orienting key is designed as movable in the direction perpendicular to the plane of symmetry of the body, two parallel cams, at the ends of which there are tooth racks with an oblique tooth located in the housing in the plane of its symmetry of the strap with toothed racks interacting with the toothed rails of the cams, and a screw for moving the strap; having two degrees of freedom of rotation and movement of a two-sided link, interacting with sliders, and hingedly connected with the link and interposed between slide sliders, e: th indicator. 7G L 1 Figure 2.