SU1333486A1 - Method and apparatus for machining gear wheels having a barrel-shaped tooth - Google Patents

Abstract

1. A method of machining gears with a barrel-shaped tooth-tool simultaneously covering all gear teeth, which is reported to rotate around its axis, and the tool relative to the wheel is turned during processing, characterized in that, in order to increase productivity and accuracy, the tool is additionally informed rotational, reciprocating movement and braking force, synchronous with the wheel, while turning the tool is made around the axis perpendicular to the axis of the machined wheel and lying in of diametrically Noah plane ,. 2. The method according to claim 1, which differs from the fact that the braking load is changed from zero in the initial position to a maximum at the end of the rotation cycle. 3. A method according to claim 1, characterized in that, in order to obtain the same barrel shape on both sides of the wheel tooth, the direction of rotation of the tool is changed when the tool passes through its initial position during the full cycle of tool rotation. 4. A device for machining gears with a barrel-shaped tooth, including a mandrel for mounting a gear with the possibility of its rotational movement and a tool mounted on a shaft located in the plate supports on the base with the possibility of its rotation, reciprocating movement and rotation relative to the wheel; This is so that, in order to increase productivity and precision, the plate is installed with the possibility of rotation around an axis located in the diametral plane of the wheel to be machined. (L 00 with from 4 00 about

Description

The invention relates to mechanical engineering and can be used in the finishing of barrel-shaped gear products,

There is a known method of finishing gear wheels, in which the tool is made, in the form of a gear wheel with internal teeth, which is in engagement with the wheel to be machined, imitates the gearing that takes place in gear couplings, the tool is rotated about its axis, and the axis tool and machined wheels turn relative to each other

The known method has low productivity due to the impossibility of processing and the length of the tooth from one installation.

A device for machining gears with a barrel-shaped tooth used on a shewing machine is known. The device comprises a frame for mounting the wheel to be machined, a support with straight guides, on which a carriage with a tool that can perform reciprocating movements is installed. The device comprises a linking mechanism associated with a pivot bearing. The caliper, which is rotatable, is mounted on a fixed strut.

A disadvantage of the known device is low productivity and accuracy due to the fact that when processing a barrel-shaped tooth, it is impossible to process more than two teeth simultaneously.

The purpose of the invention is to increase productivity and accuracy.

The goal is achieved by the method of machining gears with a barrel-shaped tooth with a tool, simultaneously covering all teeth of a wheel, rotating around its axis, and the tool relative to the wheel is turned, the tool is additionally reported to synchronize with the wheel. .starting movement and braking force, while turning the tool produces around the axis, perpendicular to the axis of the wheel being machined and lying in its diametrical plane , the braking load is varied from zero in the initial position K to the maximum at the end of the rotation cycle,

and the direction of rotation of the tool is changed when the tool passes through its initial position in time

full cycle tool rotation.

A device for machining gears with a barrel-shaped tooth, including a mandrel for mounting a gear with the possibility of its rotational movement, and a tool mounted on a shaft located in the jigs of the plate on the base, with the possibility of its rotation, reciprocating movement and rotation with respect to the wheel, the plate is installed with the possibility of rotation around an axis located in the diametral plane of the wheel being machined. FIG. 1 shows a device

general form; FIG. 2 is a view A of FIG. one.

The gear is engaged with tool 2, which encompasses all the teeth of product 1. Tool 2

mounted in the glass 3 mounted on the shaft 4 placed in the supports 5 of the rotary plate 6, the rotary plate 6 rests on the base 7, its rotational drive is made in the form of an engine 8, a gearbox 9 and a crank 10, interacting with the groove 11 of the base 7, and the axis 12 rotation of the plate 6 is located in the plane of symmetry of the gear rim of the workpiece 1, the workpiece 1 is fixed on the mandrel 13 in the spindle of the lathe, and the device itself is placed on its caliper;

On glass 3 is made profile

the groove 14 with which the roller 15 interacts, the roller 15 together with the groove 14 form the drive of the reciprocating movement of the tool 2j while the shaft 4 has the ability to rotate to move along the axis of rotation in the supports 5 of the rotary plate 6. The braking system turns on the truck made in the form of an electric generator 15 connected

with glass 3, located on shaft 4, with pulleys 17 and 18 and V-belts 19.

five%

On the base 7 and the rotary plate 6 is made of the scale 20 and 21, forming the vernier of the reference angle of rotation of the plate 6.

The method is carried out as follows.

313

The gear 1, mounted on the mandrel 13, rotates together with the gear tool 2 mounted in the glass 3 on the shaft 4. Processing is carried out due to the fact that the tool 2 surrounding all the teeth is braked by the electric generator 16 by means of the tongs 17, 18 and belts 19 and reciprocating movements due to the drive. In order to obtain a barrel-shaped side surface of the teeth, the shaft 4 mounted in the supports 5 on the plate 6 is rotated together with the tool 2 around the axis 12 relative to the base 7. Turning is done using the actuator 8-11). The control of the rotation of the plate 6 relative to the base is carried out visually on scales 20 and 21. The gear product 1 and the gear tool 2 kinematically associated with it are reported to joint rotation around their axes. Tool 2 covers all the teeth of the workpiece 1, while it is braked and moved back and forth relative to the product .1. The tool 2 is fed to the teeth to be machined due to the simultaneous rotation of the tool 2 and its braking. The tool 2 is rotated about an axis 12, perpendicular to the axis of the product 1 and passing through the symmetry plane of its gear ring.

The brake load of tool 2 is varied from zero, in the initial position, to a maximum at the extreme.

To get the same barrel

differences on both sides of the tooth from

u 15 20

25

0

86

divided 1 the direction of rotation and braking of the tool 2 is reversed when it passes through the initial position during the full cycle of rotation of the tool 2.

During processing, due to the fact that the teeth of the product 1 encompass the teeth 1 with the tool 2, simultaneous processing of the teeth is ensured, while the combination of turning the tool 2 and its braking makes it possible to uniformly process all the teeth of the product 1 at the same time.

P (5) The study of teeth with a spatial barrel-shaped profile is due to the fact that during the processing time the tool performs joint rotation with the product and the tool rotates about the axis 12.

Changing the load on the braking tool 2 eliminates the removal of chips from the side surfaces of the teeth when combining the axes of the tool 2 and product 1.

By changing the direction of rotation of the tool to the opposite, when it passes through the initial position during the full cycle of rotation of the tool 2, during processing, the same barrel shape on both sides of the tooth of the product is obtained.

 u 15 20

35

40

The amplitude of the reciprocating movements of the tool 2 and the tongue 18 is 5-6 mm with the center-to-center distance between the tongs 17.18 400 mm, so a slight change in the position of the belts 19 does not affect the processing of items 1.

1 2 J

J2

15

bida

Editor N. Gorvat

Compiled by A. Gadatelev

Tehread M.LChDKkorrektor V. Girn to

Order 3907 / 12Tir.1ZH 974Subscription

VNIIPI USSR State Committee

 Inventions and discoveries 113035, Moscow, Raushsk nab., 4/5

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Production and printing, enterprise, Uzhgorod, st. Design,

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Claims (1)

The method is as follows. The gear product 1, mounted on the mandrel 13, rotates together with the gear tool 2 mounted in the cup 3 on the shaft 4. The processing is carried out due to the fact that the tool 2 is covered by all the teeth by braking by the electric generator 16 by means of pulleys 17, 18 and belts 19 and reciprocating motion due to the drive. To obtain a barrel-shaped lateral surface of the teeth, the shaft 4, mounted in the bearings 5 on the plate 6, is rotated together with the tool 2 around the axis 12 relative to the base 7. The rotation is carried out using a drive (8 - 11). The control of the rotation of the plate 6 relative to the base is carried out visually on the scales 20 and 21. The gear product 1 and the gear tool 2 kinematically connected with it are reported to rotate jointly around their axes. Tool 2 covers all the teeth of the workpiece 1, while it is braked and moved back and forth relative to the product. 1. The supply of the tool 2 to the machined teeth is due to the simultaneous rotation of the tool 2 and its braking. The rotation of the tool 2 is carried out relative to the axis 12, perpendicular to the axis of the product 1 and passing through the plane of symmetry of its ring gear. \ The braking load of the tool 2 is changed from zero, in the initial position to the maximum in the extreme. In order to obtain the same difference on both sides (the barrel of the rotation and torus 2 are changed at its jaw transition, when the tool allows 10 steps 1, the direction of the tool can be opposite to the initial position during the complete rotation cycle of tool 2. When processing due to the fact that the teeth of the product 1 is covered by a gear tool 2, it is possible to simultaneously process this combination of rotation 2 and its braking to evenly process all the teeth of the product 1. Teaching of teeth with a spatial barrel-shaped profile is carried out due to the fact that the tool performs, during processing, rotation and rotation of the tool together with the product relative to axis 12. Changing the braking load of the tool 2 allows you to exclude the removal of chips from the side surfaces of the teeth when combining the axes of the tool 2 and product 1. By changing the direction of rotation of the tool in the opposite direction, when it passes through the initial position during the full cycle of the rotation of the tool 2 “during processing, the same barrel shape on both sides of the tooth of the product is obtained. The amplitude of the reciprocating movements of the tool 2 and the pulley 18 is 5-6 mm with an intercenter distance between the pulleys of 17.18 400 mm, so a slight change in the position of the belts 19 on the processing of products 1 does not affect.