SU703264A1 - Method of restoring of toothed wheels - Google Patents

Description

(54) METHOD OF RESTORING THE GEAR WHEELS

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The invention relates to the field of metal forming and can be used when restoring switchable gears, which increase the wear and tear of tooth tori.

There is a known method of restoring gear wheels, which includes plastic deformation of non-working parts of a gear KoJfieca in order to move the metal to a worn gear teeth with simultaneous knurling of the teeth with a gear knurling ClTl,

This method allows restoring the full profile of the ring gear,. having a relatively small uniform wear of the teeth over the entire iix length, but does not allow effective and complete repair of the worn torn teeth of the gears to be switched.

The closest in technical essence and the proposed invention is a method of restoring gear wheels, in which an additional metal is deposited on the surface of the uniformed.

of all deteriorated teeth of a fixed wheel and at the same time carry out plastic deformation of the teeth in a closed number & reforming elements, whose working profile corresponds to the profile of the restored teeth t2l.

The known method can be performed to restore relatively evenly: worn teeth. However, with face wear, it does not provide the required quality of the restoration of the gear wheels. The low accuracy of restoration requires the subsequent mechanical treatment of the entire ring gear.

The aim of the invention is to improve the quality of the restoration of gear grooves having end teeth wear.

Claims (2)

The goal is achieved in that according to the proposed OK method, metal is deposited with melting electrodes, which are fed perpendicular to the wheel plane with reciprocating oscillations in the direction of the teeth height, and plastic shaping is carried out by planetary moving deforming elements. to implement the proposed method. The recoverable gear wheel with face wear is installed motionless between the deforming 1 elements 2, made in the form of toothed knuckles arranged symmetrically around the toothed wheel and n; meshing with it. Perpendicular to the plane of the wheel G, the floating electrodes 3 are installed with the possibility of a back-and-forth movement in the direction of the high teeth. The electrodes 3 are fed into the worn end surface of the teeth through the protruding holes, made in the form of a tooth in a copper band 4. The restoration of the teeth of gear wheels is performed as follows. Additional metal on the worn end surfaces of the teeth of the wheel 1 is fed simultaneously by all melting electrodes 3, which at the same time make oscillatory movements along the contour of the holes of the conductor plate 4. which make a planetary movement around the gear wheel 1, forming a closed gauge for the molten metal and form the profile of the ring gear. An example of the method. The cogwheel of the third gearbox of the MTZ-50 tractor speed box, having a face-mounted gear, was subjected to restoration. Argon-arc surfacing of all the ends of the teeth at the same time was carried out by electrodes made of GUO8 G wire, which were oscillated within the core holes of the conductor copper plate using a special cam device. Simultaneously with the welding, the teeth of the gear wheel were rolled by three deforming gear elements with a module equal to the module of the wheel being restored. An electric current of 3L 425 A and U - 24 V was applied to the electrodes. The number of revolutions of the deforming gear elements (equal to 950 rpm. After the restoration, the turners and the outer diameter of the gear wheel were machined on the lathe. The recovery time for one gear was 2/2 minutes. This method improves the quality of the restoration of the gear wheels with face wear and to increase the productivity of the restoration. In this case, only the ends and the outer diameter of the restored gears are machined. wheels, in which additional metal is applied to the surfaces of all worn teeth of a fixed wheel at the same time and at the same time plastic deformation of the teeth in a closed caliber is carried out by deforming elements, whose working profile corresponds to the profile of the teeth, which is gears, the deposition of metal is carried out by melting electrodes, which are supplied perpendicularly. cularly to the plane of the wheel with reciprocating vibrations in the height of the teeth, and the plastic deformation is carried out by planetary moving deforming elements., Sources of information taken into account in the examination 1. Authors certificate of the USSR No. 343747, cl. In 23 K 9/04, 1970. 2. USSR Author's Certificate NO 499068, cl. On 23 K 9/04, 1973. ON 0 0 P 703264 23 1 | F