CN210461401U

CN210461401U - Air bearing for large horizontal numerical control dividing disc

Info

Publication number: CN210461401U
Application number: CN201921540630.2U
Authority: CN
Inventors: 阙世洋; 于延; 李光荣
Original assignee: Suzhou Jiangben Precision Machinery Co Ltd
Current assignee: Suzhou Jiangben Precision Machinery Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-05
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses an air bearing used for a large horizontal numerical control dividing disc, which comprises a body, wherein a rotary mandrel is rotatably arranged at the central position of the body, an extension disc is arranged at the top end of the rotary mandrel, a disc surface is arranged at the top part of the extension disc, an inner sunken groove is arranged at one side of the inner side of the body, which is opposite to the rotary mandrel, a sealing press ring is fixedly arranged at the edge of the inner sunken groove, a second sealing ring is arranged between the bottom part of the sealing press ring and the inner sunken groove, an air bearing structure is designed in the utility model, the problem of cost increase caused by the use of a large bearing by a large turntable is solved, the load capacity of the turntable is improved in multiple times by the combination mode of a small bearing and an air bearing when the large turntable is matched and used, the air bearing structure is used as the protection of the conventional bearing, the service life of the conventional bearing is prolonged, the service life of the rotary table is prolonged.

Description

Air bearing for large horizontal numerical control dividing disc

Technical Field

The utility model belongs to the technical field of horizontal numerical control graduated disk, concretely relates to air supporting bearing that large-scale horizontal numerical control graduated disk used.

Background

In the industry of machine tools, the specification of a large horizontal type dividing disc is generally increased correspondingly along with the increase of the three-axis stroke of the machine tool, and the corresponding rated load of the horizontal type dividing disc is also increased when the specification of the horizontal type dividing disc is increased; generally, the rated load of a 1000x1000 horizontal rotary table is about 5-6 tons, the rated load of a 1400x1600 horizontal rotary table is about 8-10 tons, the rated load of a 1600x1800 horizontal rotary table is about 12-15 tons, and the rated load of a 2000x2000 horizontal rotary table is about 20-25 tons; the load of the horizontal rotary table is increased, the rated load of a supporting bearing in the horizontal rotary table also needs to be increased, the larger the type of the bearing is, the larger the processing difficulty is, the more difficult the precision is to control, the higher the cost is, even a large part of bearings need to depend on imported foreign bearings, so that the manufacturing cost of the horizontal rotary table is directly increased, the selling price of the rotary table is higher, and the use cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air supporting bearing that large-scale horizontal numerical control graduated disk used to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an air supporting bearing that large-scale horizontal numerical control graduated disk used, includes the body, the central point of body puts to rotate and is provided with rotatory dabber, the top of rotatory dabber is provided with extends the dish, the top that extends the dish is provided with the quotation, the inboard of body is provided with the undercut groove for one side of rotatory dabber, the fixed sealed clamping ring that is provided with in edge in undercut groove, be provided with the second sealing washer between the bottom of sealed clamping ring and the undercut groove, the top surface of sealed clamping ring and the laminating of the bottom surface of extending the dish, and be provided with first sealing washer between the top surface of sealed clamping ring and the extension dish, be provided with the third sealing washer between the edge of the bottom edge of extending the dish and the edge of the top of body, be provided with the VA oil blanket between the bottom edge.

Preferably, the shape of the invagination groove is an annular groove structure.

Preferably, the inner side surface of the recessed groove is provided with an air inlet channel communicated with the air inlet.

Preferably, the surface of the sealing press ring is provided with an annular groove at the joint of the first sealing ring and the second sealing ring, and the size of the groove is consistent with that of the first sealing ring and the second sealing ring.

Preferably, the shape of VA oil blanket is ring shape structure, and the top of VA oil blanket is provided with the inclined plane annular structure at thirty degrees angles of slope.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses in designed air supporting bearing structure, solved large-scale revolving stage and used the cost that big bearing leads to and increased the problem, let large-scale revolving stage collocation use small-size bearing and air supporting bearing's compound mode improve the bearing capacity of revolving stage at double number to with air supporting bearing structure as the protection of conventional bearing, make the extension of conventional bearing life-span, reduce revolving stage manufacturing cost with this, prolong the revolving stage life-span.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a side view, partially cross-sectional, structural schematic view of the present invention;

fig. 4 is an enlarged schematic view of the structure at a of the present invention;

in the figure: 1. a body; 2. a dish surface; 3. an air inlet; 4. a first seal ring; 5. rotating the mandrel; 6. sealing the pressure ring; 7. a second seal ring; 8. a third seal ring; 9. VA oil seal; 10. an invagination groove; 11. an extension tray.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an air supporting bearing that large-scale horizontal numerical control graduated disk used, which comprises a body 1, the central point of body 1 puts to rotate and is provided with rotatory dabber 5, the top of rotatory dabber 5 is provided with extension dish 11, the top that extends dish 11 is provided with quotation 2, the inboard of body 1 is provided with undercut groove 10 for one side of rotatory dabber 5, the fixed sealed clamping ring 6 that is provided with in edge of undercut groove 10, be provided with second sealing washer 7 between the bottom of sealed clamping ring 6 and the undercut groove 10, the top surface of sealed clamping ring 6 and the bottom surface laminating of extending dish 11, and be provided with first sealing washer 4 between the top surface of sealed clamping ring 6 and the extension dish 11, be provided with third sealing washer 8 between the edge of the bottom of extending dish 11 and the edge of undercut groove 10, be provided with VA oil blanket 9 between the bottom edge of quotation 2 and the.

In this embodiment, the shape of the recessed groove 10 is preferably an annular groove structure, so as to form a closed cavity conveniently.

In the present embodiment, it is preferable that the inner side surface of the recessed groove 10 is provided with an air intake passage communicating with the air intake port 3 for the convenience of inflation.

In this embodiment, preferably, annular grooves are formed at the connection positions of the surface of the sealing press ring 6 and the first sealing ring 4 and the second sealing ring 7, and the size of each groove is consistent with that of the first sealing ring 4 and that of the second sealing ring 7, so that the sealing press ring is convenient to mount and prevented from falling off.

In this embodiment, preferably, the VA oil seal 9 is in a circular ring structure, and the top end of the VA oil seal 9 is provided with an inclined plane ring structure with an inclined thirty-degree angle, so as to ensure sealing.

The utility model discloses a theory of operation and use flow: in order to reduce the starting friction force when the turntable is fully loaded and protect the bearing from being damaged, air is introduced into a cavity between an inward groove 10 on a body 1 and an extension disc 11 on a rotating mandrel 5 through an air inlet 3, the cavity forms a sealing chamber by using a first sealing ring 4, a second sealing ring 7 and a third sealing ring 8, and the rotating mandrel 5 is subjected to upward thrust of air, so that the load of the original bearing is reduced, according to the following steps: p = F/S (F is thrust, N is unit, p is gas pressure, Pa is unit, S is force area, m2 is unit, force area of the turntable S =5497cm 2), G = mg (G is gravity, N is unit, m is mass, kg is unit, G = 9.8N/kg); when the revolving stage receives the heavy load and for m, let F = G, obtain p = mg/S, we can let the gravity of heavy object and air bearing' S thrust equal through adjustment gas pressure p (adjustment air-vent valve), have increased substantially the bearing capacity of revolving stage, frictional force and start-up moment when having reduced the revolving stage rotation have reduced revolving stage manufacturing cost, the life-span of extension revolving stage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an air bearing that large-scale horizontal numerical control graduated disk used, includes body (1), its characterized in that: the rotary core shaft is rotatably arranged at the center of the body (1), an extension disc (11) is arranged at the top end of the rotary core shaft (5), a disc surface (2) is arranged at the top of the extension disc (11), an inner sink groove (10) is formed in the inner side of the body (1) relative to one side of the rotary core shaft (5), a sealing press ring (6) is fixedly arranged at the edge of the inner sink groove (10), a second sealing ring (7) is arranged between the bottom of the sealing press ring (6) and the inner sink groove (10), the top surface of the sealing press ring (6) is attached to the bottom surface of the extension disc (11), a first sealing ring (4) is arranged between the top surface of the sealing press ring (6) and the extension disc (11), a third sealing ring (8) is arranged between the bottom edge of the extension disc (11) and the edge of the inner sink groove (10), a VA oil seal (9) is arranged between the bottom edge of the disc surface (2) and the top edge of the body (1).

2. The air bearing used for the large horizontal type numerical control indexing disc as claimed in claim 1, wherein: the shape of the invagination groove (10) is an annular groove structure.

3. The air bearing used for the large horizontal type numerical control indexing disc as claimed in claim 1, wherein: and an air inlet channel communicated with the air inlet (3) is arranged on the inner side surface of the sunken groove (10).

4. The air bearing used for the large horizontal type numerical control indexing disc as claimed in claim 1, wherein: the surface of the sealing press ring (6) is provided with an annular groove at the joint of the first sealing ring (4) and the second sealing ring (7), and the size of the groove is consistent with that of the first sealing ring (4) and the second sealing ring (7).

5. The air bearing used for the large horizontal type numerical control indexing disc as claimed in claim 1, wherein: the shape of VA oil blanket (9) is ring shape structure, and the top of VA oil blanket (9) is provided with the inclined plane annular structure at thirty degrees angles of slope.