SU441441A1 - Device for controlling the distance from the supporting end of bevel gears to the point of intersection of the forming outer and rear cones - Google Patents

Description

one

The invention relates to the field of measurement technology and relates to devices based on mechanical measurement methods, in particular, devices for monitoring workpieces of bevel gears.

A device is known which comprises a stand and a micrometer perpendicularly moving relative to it with a flat measuring surface.

When measuring, the rack is pressed against the supporting end of the gear and, rotating the microscrew, they combine the flat measuring surface of the micrometer with the edge of the spun diameter, after which the size of the measured size is determined by the Vernier.

However, the measuring surface of the micrometer is visually aligned with the edge of the outer diameter, which leads to measurement errors of up to 0.2-0.4 mm.

In addition, in a number of cases with conical shchepods, the edge of an aperture diameter is made along the radius of ILP in the form of a cylindrical cross, which makes the known device practically unsuitable for this measurement.

Pel of the invention is to increase the accuracy of control in any form of the outer diameter of the wheel.

This is achieved by the fact that the device is equipped with a calibrated roller, made in the form of a sector sleeve with an internal

an annular groove, and centering clamping jaws arranged to move along the inner annular groove and the radial planes of the roller.

The calibrated roller with clamping jaws is based respectively on the outer and rear cones of the gear.

The presence of the roller makes it possible to measure between the flat surface of the end of the pinion and the cylindrical surface of the roller, thus eliminating the visual installation of the measuring tip.

The constructive execution of the roller ensures that it is the only correct position on the bevel gear: the axis of the roller lies in the outer plane of the diameter, formed by the intersection of the forming outer and rear cones.

FIG. 1 shows the proposed device, front view; in fig. 2 is the same, top view, in FIG. 3 - calibrated roller, front view; in fig. 4 shows a section along A-A in FIG. 3; in fig. 5 is a section along BB in FIG. four; in fig. 6 - micrometer in zero position, front view.

The device contains a vertical stand 1 with a face magnetic claw 2, a micrometer 3 and a calibrated roller 4.

The housing 5 of the calibrated roller is made in the form of a pie sleeve with a different working surface 6, coaxial (concentric) inner surface 7.

Inside the housing 5, two centering clamping jaws 8 are moved coaxially with it, the annular projections 9 of which are placed in the annular groove 10 of the housing 5.

The clamping jaws 8 from the side of the non-working surfaces under the action of the springs 11 are compressed to the stops 12 fixed with screws 13. The stops 12 are set so that the angle between the working surfaces of the centering clamping jaws 8 is within 7U-80 °, i.e. within the angle smaller than the practical angle with the outer diameter of any conical bristles.

The clamping surfaces are provided with two supports 14, which, through the magnets 15 and the brass plates 16, are fastened with screws 17 to the centering clamping jaws 8. The supports 14 of each centering clamping jaw 8 lie in the same plane and radially directed to the axis of the calibrated roller 4.

The measurement of the distance from the supporting end of the bevel gear to the point of intersection of the forming outer and rear cones is made as follows. Micrometer 3 is set to the desired height along the reading scale of the vertical column 1. Then micrometer 3 is set to "Zero", for which the flat bar 18 is set vertically and the flat measuring tip 20 of the micrometer is attached to the surface 19 of the magnetic clamp. After that, a vertical stand 1 with a micrometer 3 is fastened to the end of the bevel gear with the help of a magnet clamp 2. The installation of the micrometer 3 at a given height is provided by an abutment 21, which is provided with a magnetic clamp 2. The calibrated roller 4 is mounted on a bevel gear so that the supports of the 14 centering jaws 8 respectively touch the outer and rear cones. By pushing

the hands on the calibrated roller 4 are separated from the centering clamping jaws 8. Since the clamping jaws 8 are spring-loaded and the supports 14 are magnetized, the roller is stably fixed on the conical gear wheel, and since the magnetic supports 14 lie in the same plane and radially directed to the axis of the roller 4 then the latter occupies a position in which its axis lies in the plane of the outer diameter of the conical jaws.

After installation of the roller with a micrometer 3, the size / dimension, i.e., the size from the supporting end of the bevel gear to the generator of the outer cylinder calibrated

roller 4. With a large size / ism, a measuring standard 22 is used.

The distance from the support end of the bevel gear to the point of intersection of the forming outer and rear cone (1) is determined from the expression

k - g vzm)

where k - controlled size; d is the diameter of the roller;

/ meas - measured size.

Subject invention

A device for controlling the distance from the support end of the bevel gear to the point of intersection of the forming outer and rear cones, containing a stand with magnetic sticking and a micrometer, characterized in that, in order to improve the accuracy of control in any form of the outer diameter of the wheel, it is equipped with a calibrated roller made in the form of a pie sleeve with an internal annular groove, and centering clamping jaws made with the ability to move along the entrained annular groove and fitted with magnetic supports located in the radial planes of the roller.

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