CN220127612U - Center structure capable of quickly changing model - Google Patents
Center structure capable of quickly changing model Download PDFInfo
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- CN220127612U CN220127612U CN202321560457.9U CN202321560457U CN220127612U CN 220127612 U CN220127612 U CN 220127612U CN 202321560457 U CN202321560457 U CN 202321560457U CN 220127612 U CN220127612 U CN 220127612U
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- ball bearings
- shaft handle
- top shaft
- bearing
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- 238000009434 installation Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000006978 adaptation Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to the technical field of live centers, in particular to a center structure capable of being quickly changed in model. The novel bearing assembly comprises a top shaft handle, a top shaft sleeve matched with the top shaft handle and a bearing assembly matched with the top shaft sleeve and is characterized in that: the bearing assembly comprises oil seals, double-row angular contact ball bearings, thrust ball bearings and deep groove ball bearings which are sleeved at different positions of the top shaft handle and are sequentially arranged from left to right. The utility model has the advantages that: the technical scheme is that the bearing assembly is suitable for products of different models to carry out assembly, and due to the characteristics of the thrust ball bearing, the model of a certain range can be allowed to carry out adaptation, so that the center shaft handle and the center shaft sleeve can be replaced as required, and the mounting positions of the double-row angular contact ball bearing and the deep groove ball bearing are effectively reduced, abnormal heating of the retainer during working is effectively reduced, and the bearing capacity and the service life of the roller are greatly improved.
Description
Technical Field
The utility model relates to the technical field of live centers, in particular to a center structure capable of being quickly changed in model.
Background
When the existing live center supports a bearing type shaft part (comprising a heavy roller), the deformation of the center and the rotation precision of a supporting point are difficult to meet the requirements of the development of the prior art, and the service life of the live center cannot be guaranteed.
In the prior art, the structure of the center is unreasonable, so that the service life is short, the precision is poor and the replacement is troublesome.
It is therefore necessary to design a tip structure that can be quickly changed to solve the above problems.
Disclosure of Invention
The utility model aims to provide a tip structure capable of being quickly changed in type, so as to overcome the defects in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a top structure that can quick change model, its includes top axle shank, the top axle sleeve of cooperation top axle shank installation and is used for the cooperation top axle shank with the bearing assembly of top axle sleeve installation, its characterized in that: the bearing assembly comprises oil seals, double-row angular contact ball bearings, thrust ball bearings and deep groove ball bearings which are sleeved at different positions of the top shaft handle and sequentially arranged from left to right, the double-row angular contact ball bearings are arranged at the step of the head of the top shaft handle, the thrust ball bearings are arranged at the cone-changing position of the head of the top shaft handle, and the deep groove ball bearings are arranged at the end head of the top shaft handle.
Preferably, a second lock nut is further arranged at the axial surface end of the top shaft handle.
Preferably, the oil seal is fixedly installed by being matched with the top shaft handle through a first lock nut, a fixing hole is formed in the shaft surface of the first lock nut, and a key slot for storing the oil seal is formed in the oil seal.
Preferably, the side wall of the center shaft sleeve is also provided with a limiting hole, and an inner hexagonal flat end locking screw is arranged in the limiting hole.
The beneficial effects of the utility model are as follows: the technical scheme is that the bearing assembly is suitable for products of different models to carry out assembly, and due to the characteristics of the thrust ball bearing, the model of a certain range can be allowed to carry out adaptation, so that the center shaft handle and the center shaft sleeve can be replaced as required, and the mounting positions of the double-row angular contact ball bearing and the deep groove ball bearing are effectively reduced, abnormal heating of the retainer during working is effectively reduced, and the bearing capacity and the service life of the roller are greatly improved.
Drawings
Fig. 1 is a schematic structural view of a tip structure capable of quick-changing types of the present utility model;
FIG. 2 is a schematic view of a first lock nut of a tip structure of the present utility model that can be quickly changed;
in the figure: 1. a top shaft; 2. a center shaft sleeve; 3. an oil seal; 4. double row angular contact ball bearings; 5. a thrust ball bearing; 6. deep groove ball bearings; 7. a first lock nut; 71. a fixing hole; 72. a key slot; 8. a second lock nut; 21. a limiting hole; 9. the inner hexagonal flat end is locked with a screw.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1 to 2, a quick-change type tip structure includes a tip shaft 1, a tip shaft sleeve 2 mounted in cooperation with the tip shaft 1, and a bearing assembly for mounting in cooperation with the tip shaft 1 and the tip shaft sleeve 2;
the bearing assembly comprises an oil seal 3, a double-row angular contact ball bearing 4, a thrust ball bearing 5 and a deep groove ball bearing 6 which are sequentially arranged from left to right; the oil seal 3, the double-row angular contact ball bearing 4, the thrust ball bearing 5 and the deep groove ball bearing 6 are radially sleeved outside the top shaft handle 1.
The oil seal 3 is fixedly installed through the cooperation of the first lock nut 7, so that the cooperation of the first lock nut 7 is convenient, the axial surface of the first lock nut 7 is provided with a fixing hole 71, and a key groove 72 for storing the oil seal 3 is formed in the oil seal. The oil seal 3 is clamped into the key groove 72, is fixed by being matched with the first locking nut 7, plays a role in sealing, and is used for placing lubricating oil of an internal bearing to overflow.
The double-row angular contact ball bearing 4 is arranged at the step of the head part of the top shaft handle 1, and the double-row angular contact ball bearing 4 is used for bearing radial and axial combined loads and moment loads mainly of larger radial loads and limiting bidirectional axial displacement of the top shaft handle 1 and the top shaft sleeve 2, and the section moment of inertia of the double-row angular contact ball bearing is greatly increased, so that the deflection of the cantilever part of the top shaft handle 1 is reduced.
The thrust ball bearing 5 is arranged at the tapered part of the head part of the top shaft handle 1, the thrust ball bearing 5 is allowed to have installation errors, and the thrust ball bearing is suitable for different types of top shaft handles 1 in a certain range, so that the adaptation effect is achieved.
The deep groove ball bearing 6 is arranged at the end of the tip shaft handle 1, the deep groove ball bearing 6 has small friction resistance and high rotating speed, and can be used for bearing radial load or a machine part with radial and axial actions and also can be used for bearing axial load, so that abnormal heating of the retainer during working is effectively reduced, and the bearing capacity and service life of the roller are greatly improved.
A second lock nut 8 is also arranged at the axial surface end of the top shaft handle 1.
The side wall of the center shaft sleeve 2 is further provided with a limiting hole 21, the limiting hole 21 is arranged corresponding to the first locking nut 7, and the inner hexagonal flat end locking screw 9 is installed in the limiting hole 21 and is matched with the first locking nut 7 to be fixed.
The tip arbor 1 and the tip axle sleeve 2 can be changed according to the needs of model, and this bearing assembly is applicable to the product of different models and carries out the subassembly, and thrust ball bearing's characteristic can tolerate the model of certain scope and carry out the adaptation. And the mounting positions of the double-row angular contact ball bearing and the deep groove ball bearing effectively reduce abnormal heating of the retainer during working, and the bearing capacity and the service life of the roller are greatly improved.
The utility model has the advantages that the bearing assembly is suitable for products with different types, and due to the characteristics of the thrust ball bearing, the bearing assembly can allow a certain range of types to be matched, so that the bearing assembly can be matched with a top shaft handle and a top shaft sleeve as required, and the mounting positions of the double-row angular contact ball bearing and the deep groove ball bearing can effectively reduce abnormal heating of the retainer during working, thereby greatly improving the bearing capacity and the service life of the roller.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (4)
1. The utility model provides a top structure that can quick change model, its includes top axle shank, the top axle sleeve of cooperation top axle shank installation and is used for the cooperation top axle shank with the bearing assembly of top axle sleeve installation, its characterized in that: the bearing assembly comprises oil seals, double-row angular contact ball bearings, thrust ball bearings and deep groove ball bearings which are sleeved at different positions of the top shaft handle and sequentially arranged from left to right, the double-row angular contact ball bearings are arranged at the step of the head of the top shaft handle, the thrust ball bearings are arranged at the cone-changing position of the head of the top shaft handle, and the deep groove ball bearings are arranged at the end head of the top shaft handle.
2. A tip structure of the type that can be quickly changed according to claim 1, characterized in that: and a second lock nut is further arranged at the shaft surface end of the top shaft handle.
3. A tip structure of the type that can be quickly changed according to claim 1, characterized in that: the oil seal is fixedly installed through the cooperation of a first lock nut and the top shaft handle, a fixing hole is formed in the shaft surface of the first lock nut, and a key slot for storing the oil seal is formed in the oil seal.
4. A tip structure of the type that can be quickly changed according to claim 1, characterized in that: the side wall of the center shaft sleeve is also provided with a limiting hole, and an inner hexagonal flat end locking screw is arranged in the limiting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321560457.9U CN220127612U (en) | 2023-06-19 | 2023-06-19 | Center structure capable of quickly changing model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321560457.9U CN220127612U (en) | 2023-06-19 | 2023-06-19 | Center structure capable of quickly changing model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220127612U true CN220127612U (en) | 2023-12-05 |
Family
ID=88952877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321560457.9U Active CN220127612U (en) | 2023-06-19 | 2023-06-19 | Center structure capable of quickly changing model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220127612U (en) |
-
2023
- 2023-06-19 CN CN202321560457.9U patent/CN220127612U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |