SU963743A1 - Method of finishing cylindrical toothed gears - Google Patents

Description

(54) METHOD FOR FINISHING THE CYLINDRICAL TOOTH WHEELS

12

The invention relates to the field of engineering and can be used in the processing of cylindrical fine micromul gears of external and internal gears.

There is a method of machining gears 13 when the tool and the workpiece form a gear pair of internal gearing. To maintain the gapless contact in engagement, the part is fed to the tool, deforming the cone-shaped spacer designed for this purpose.

The disadvantages of this method of processing are the impossibility of using the tool on an elastic basis and the poor quality of processing caused by the inaccuracy of centering the wheel and the tool.

The purpose of the invention is to improve the quality of processing during the finishing operation.

This goal is achieved by the fact that according to the florid method one of the elements of the tool pair, a part made in the form of a gear rim, is reported to have additional planetary rotation around an axis that does not coincide with its geometric

center, and the other element of the pair freely rolls inside the rim. Here, the magnitude of the radial loading 5 is adjusted by changing the speed of the planetary rotation.

The drawing shows a diagram of the installation, implementation, method of processing

10 cylindrical fine wheels external and internal gearing.

On the central axis 1, a housing 2 is mounted, bearing the axes 3 and 4 of containers 5 and b, and Axes 3 and 4 are also geometric centers.

Claims (1)

15 toothed rims 7 and 8, which are internal gear wheels located in the containers. Inside the gear rims there are wheels 9 and 10 with external teeth, about 20 with a pair of rims internal for heat. The axles of the rims and wheels do not overlap. Each type of processed fly corresponds to its own type of tool. If the part is a tooth 25 rim 7, then the tool is a wheel 9. If the part is wheel 10, then the tool is a toothed rim 8. The tool is made of an elastic material (for example, rubber), the surface layer of which is reinforced with HfcjM abrasive powder. Tool width ne {ekryvaet work piece. The method is carried out as follows. Include drive installation. At the same time, containers 5 and b, rotating about their axes 3 and 4, also receive a planetary rotation around Nesi 1o. Wheels 9 and 10, under the influence of centrifugal forces P and Pj, are diametrically opposed, and as the rims rotate relative to axes 3 and 4 begin to roll freely in them. Under the influence of radial loading, the tool's teeth are deformed to fill to the very bottom of the cavity of the workpiece. As the tool rolls together, the tool teeth are in contact with all the side surfaces of the teeth of the workpiece all the way from the head to the base of the tooth and back. When this occurs, the mutual slip. As a result, abrasive. Grains cut off the particles of the material of the part, carried out the processing. The regulation of the radial loading forces P and P / is carried out by changing the peripheral speed of the planetary rotation of the containers 5 and 6. This method removes the allowance for processing along the entire lateral surface of the tooth from top to bottom, eliminating the formation of a step in the lower part of the tooth stem and improving the quality of processing ki. Compensation of the lateral gap in the grip as the tool wears and maintaining the constancy of the forces of radial loading throughout the processing cycle occurs automatically. Installation errors do not affect processing quality. Effort is practically eliminated. dying tool teeth. The tracks from the gear-cutting tool, directed along the tooth and playing the role of cutting edges, which wear down, for example, textolite satellites during their work with the steel rim in the planetary gearbox, are completely removed. Claims The method of finishing processing of cylindrical gears by joint running in a backlash internal gearing of a pair of tool parts with radial loading, denounced by the fact that, in order to improve the quality of processing, one of the elements of the pair, made in the form of a gear rim, imparts an additional planetary rotation around the axis , not coinciding with its geometric center, and the other element of the pair freely rolls inside the rim, while the magnitude of the radial loading is controlled by Your change in speed is planetary rotation. Sources of information taken into account in the examination 1. USSR author's certificate 356057, cl. In 23 F 19/00, 1970 (prototype) .. one