CN211174996U

CN211174996U - High-speed precision turntable bearing

Info

Publication number: CN211174996U
Application number: CN201922362319.XU
Authority: CN
Inventors: 魏纪伟; 林少卿
Original assignee: Luoyang Boying Bearing Co ltd
Current assignee: Luoyang Boying Bearing Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-04
Anticipated expiration: 2029-12-25

Abstract

the utility model belongs to the technical field of bearing manufacturing, a high-speed precision revolving stage bearing is proposed, a high-speed precision revolving stage bearing that proposes has the bearing race, the bearing race has an annular ring, the bottom surface of annular ring has the annular boss that inwards stretches out, annular boss constitutes the bearing race that the cross sectional shape is the L type with the annular ring jointly, the top of bearing race has the bearing upper gland that links firmly rather than as an organic whole, form the toroidal cavity that is used for placing the bearing inner race between the upper end face of bearing upper gland and the up end of annular boss, the inner diameter face of annular ring, the bearing inner race is located the toroidal cavity, and the inner diameter face of bearing inner race is outstanding in the toroidal cavity, be provided with the radial bearing roller along circumference equipartition between the outer diameter face of bearing inner race and the inner diameter face of annular ring, all be provided with the axial bearing roller along circumference equipartition between bearing inner race and the bearing upper gland, bearing inner race and the bearing race the annular boss of bearing race.

Description

High-speed precision turntable bearing

Technical Field

The utility model belongs to the technical field of the bearing is made, concretely relates to high-speed accurate revolving stage bearing.

Background

In the field of mechanical equipment manufacturing, a rotary turntable is generally used, a YRT bearing is generally used as a bearing of a conventional turntable supporting bearing, but rolling bodies of the YRT bearing are all cylindrical rolling bodies in line contact, the rotating speed cannot be increased due to large contact positions, and the defects that the starting torque is large, the friction force is large, and the heating is serious in a high-speed operation state exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-speed accurate revolving stage bearing makes it can solve ordinary YRT bearing rotational speed low, start-up moment is big, frictional force is big, heats serious problem under high-speed running state.

The utility model adopts the following technical proposal to achieve the purpose;

A high-speed precision turntable bearing comprises a bearing race, wherein the bearing race is provided with an annular ring, the bottom surface of the annular ring is provided with an annular boss which extends inwards, the annular boss and the annular ring jointly form the bearing race with an L-shaped cross section, the top of the bearing race is provided with an upper bearing gland which is fixedly connected with the bearing race into a whole, the upper bearing gland is annular, an annular cavity for placing an inner bearing ring is formed between the lower end surface of the upper bearing gland and the upper end surface of the annular boss and between the inner diameter surfaces of the annular ring, the inner bearing ring is positioned in the annular cavity, the inner diameter surface of the inner bearing ring protrudes out of the annular cavity, radial bearing rollers which are uniformly distributed along the circumference are arranged between the outer diameter surface of the inner bearing ring and the inner diameter surface of the annular ring of the bearing race, axial bearing rollers which are uniformly distributed along the circumference are arranged between the inner bearing ring and the upper bearing gland, and between the inner bearing ring and the annular boss, and two rows of the axial bearing rollers jointly form a rotary support body of the high-speed precision turntable.

And the inner diameter surface and the upper and lower end surfaces of the bearing inner ring are provided with roller grooves for placing rollers.

Radial load roller retainers are provided for the radial load rollers of a row.

And the axial bearing roller retainers are respectively arranged corresponding to the two rows of axial bearing rollers.

The utility model provides a pair of high-speed accurate revolving stage bearing adopts above-mentioned technical scheme, has solved ordinary YRT bearing rotational speed and has hanged down, start-up moment is big, frictional force is big, the serious problem of generating heat under high-speed running state, has the characteristics that the rotational speed is high, frictional force is little.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

In the figure: 1. the bearing comprises a bearing upper gland, 2. a bearing race, 3. a bearing inner ring, 4. an axial bearing roller, 5. a single-side bearing roller retainer, 6. a radial bearing roller, 7. a radial bearing roller retainer, 8. an outer ring chaining screw hole and 9. an inner ring chaining screw hole.

Detailed Description

The invention is described in connection with the accompanying drawings and the embodiments:

As shown in figures 1 and 2, the high-speed precision turntable bearing comprises a bearing race 2, wherein the bearing race 2 is provided with an annular ring, the bottom surface of the annular ring is provided with an annular boss which extends inwards, the annular boss and the annular ring jointly form the bearing race 2 with an L-shaped cross section, the top of the bearing race is provided with a bearing upper gland 1 which is fixedly connected with the bearing race into a whole, the bearing upper gland 1 is annular, an annular cavity for placing a bearing inner ring is formed between the lower end surface of the bearing upper gland 1 and the upper end surface of the annular boss and between the inner diameter surfaces of the annular ring, the bearing inner ring 3 is positioned in the annular cavity, the inner diameter surface of the bearing inner ring 3 protrudes out of the annular cavity, radial bearing rollers 6 which are uniformly distributed along the circumference are arranged between the outer diameter surface of the bearing inner ring 3 and the inner diameter surface of the annular ring of the race bearing race, and a row of axial bearing rollers 4 which are uniformly distributed along the circumference are uniformly distributed between the bearing inner ring 3 and the bearing race 2 and the bearing rollers which jointly form two rows of bearing bodies 6.

And the inner diameter surface and the upper and lower end surfaces of the bearing inner ring 2 are provided with roller grooves for placing rollers.

The radial bearing rollers 6 of the respective row are provided with radial bearing roller holders 7.

Axial bearing roller retainers 5 are provided for each of the two rows of axial bearing rollers 4.

turning and forming the bearing outer ring 2 into an L shape, grinding and forming a circular raceway groove on the upper wall of the inner contour of the bottom of the L shape, placing a single-side axial bearing roller 6, placing the single-side axial bearing roller 6 in the raceway groove, and restraining and isolating the rollers by a single-side axial bearing roller retainer 7 to prevent collision and friction between the rollers;

grinding a circular track groove on the inner side wall of the L-shaped inner contour of the outer ring for placing a radial bearing roller 9, wherein the radial bearing roller 9 is placed in the track groove, isolated and restrained by a radial bearing roller retainer 8, and collision friction is generated between the placed rollers;

Three rolling way grooves are respectively ground on the planes and the side surfaces of the two sides of the inner ring 3 and are respectively used for matching with single-row radial bearing rollers of double-row axial bearing rollers;

A bearing gland 1 is arranged on one side of a bearing outer ring 2 and used for connecting a bearing race 2 and a bearing inner ring 3 into a complete integral structure through fixing holes 10 by adopting fixing screws.

Claims

1. A high-speed precision turntable bearing is characterized in that the high-speed precision turntable bearing is provided with a bearing race, the bearing race is provided with an annular ring, the bottom surface of the annular ring is provided with an annular boss which extends inwards, the annular boss and the annular ring jointly form the bearing race with an L-shaped cross section, the top of the bearing race is provided with a bearing upper gland fixedly connected with the bearing race into a whole, the bearing upper gland is annular, an annular cavity for placing a bearing inner ring is formed between the lower end surface of the bearing upper gland and the upper end surface of the annular boss and between the inner diameter surfaces of the annular ring, the bearing inner ring is positioned in the annular cavity, the inner diameter surface of the bearing inner ring protrudes out of the annular cavity, radial bearing rollers which are uniformly distributed along the circumference are arranged between the outer diameter surface of the bearing inner ring and the inner diameter surface of the bearing race, axial bearing rollers which are uniformly distributed along the circumference are arranged between the bearing inner ring and the bearing upper gland, and between the bearing inner ring and the annular boss of the bearing race, and a high-speed precision turntable supporting body jointly formed by the two rows of axial bearing rollers and the radial bearing rollers which are uniformly distributed along the.

2. A high speed precision turret bearing according to claim 1, wherein: and the inner diameter surface and the upper and lower end surfaces of the bearing inner ring are provided with roller grooves for placing rollers.

3. A high speed precision turret bearing according to claim 1, wherein: radial load roller retainers are provided for the radial load rollers of a row.

4. A high speed precision turret bearing according to claim 1, wherein: and the axial bearing roller retainers are respectively arranged corresponding to the two rows of axial bearing rollers.