CN113043056B - Rotary bearing follower - Google Patents
Rotary bearing follower Download PDFInfo
- Publication number
- CN113043056B CN113043056B CN202110377352.9A CN202110377352A CN113043056B CN 113043056 B CN113043056 B CN 113043056B CN 202110377352 A CN202110377352 A CN 202110377352A CN 113043056 B CN113043056 B CN 113043056B
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- Prior art keywords
- element assembly
- rolling element
- rotating shaft
- base body
- shell
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
Abstract
The invention provides a rotary bearing follower which comprises a base body, a shell and a rotary shaft, wherein the rotary shaft penetrates through the shell along a central shaft, the base body and the shell are both of hollow structures, and are clamped oppositely to form a closed shell which is fixedly connected through a bolt; the base body is sequentially provided with a seat ring, a first rolling element assembly and a taper sleeve along the axial direction; the outer circle of the rotating shaft is sequentially provided with a second rolling element assembly, a ferrule and an elastic sleeve; the taper sleeve is axially connected with the rotating shaft in a rolling manner through a third rolling element assembly; the bottom of the rotating shaft is fixedly connected with a pressure head through a screw. The rotary bearing follower is provided with the first rolling element assembly, the second rolling element assembly and the third rolling element assembly, so that each movement is rolling movement, friction is reduced, response speed is improved, the follower can automatically center an angle through an inner spherical surface of a seat ring, position and angle errors of a pressing point and a workpiece rotation center are compensated, and the workpiece is ensured to normally rotate along with a rotary mechanism while being pressed by the follower.
Description
Technical Field
The invention relates to a bearing follower, in particular to a rotary bearing follower.
Background
With the continuous development of the mechanical industry, the industry competition is intensified, so that the requirements on the machining precision and the machining efficiency of mechanical parts are higher and higher. During machining of rotating parts, chucks or other clamping mechanisms are often required to clamp the workpiece and perform the necessary rotating or indexing motion with other rotating mechanisms. In some cases, such as in the case of multi-axis linkage machining, the chuck cannot hold the workpiece or the chuck interferes with the machining tool, or due to part manufacturing and machining errors, over-constraint of the workpiece is caused after compaction, which affects the normal rotation of the workpiece driven by the rotating mechanism, and thus a set of follow-up mechanism is required to compact the workpiece and move along with the rotating mechanism.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the rotary bearing follower, which is characterized in that the first rolling element assembly, the second rolling element assembly and the third rolling element assembly are arranged, so that each movement is rolling movement, the friction is reduced, and the corresponding speed is improved; the follower can automatically center through the inner spherical surface of the seat ring; each moving part is pre-tightened through the elastic sleeve, over-constraint in movement is eliminated, and automatic reset of the follower is realized. The technical scheme adopted by the invention is as follows:
a rotary bearing follower comprises a base body, a shell and a rotary shaft penetrating through the shell along a central shaft, wherein the base body and the shell are both of hollow structures, are clamped oppositely to form a closed shell and are fixedly connected through bolts;
the base body is sequentially provided with a seat ring, a first rolling element assembly and a taper sleeve along the axial direction;
the outer circle of the rotating shaft is sequentially provided with a second rolling element assembly, a ferrule and an elastic sleeve;
the taper sleeve is in rolling connection with the rotating shaft axially through a third rolling element assembly;
the bottom of the rotating shaft is fixedly connected with a pressure head through a screw;
the first rolling element assembly, the second rolling element assembly and the third rolling element assembly are all composed of a plurality of rolling elements and a retainer, the retainer uniformly separates the plurality of rolling elements, and the plurality of rolling elements can freely rotate in the retainer;
the outer side of the seat ring is fixedly connected in the base body, and the inner side of the seat ring is an inner spherical surface; a first raceway is arranged on the conical surface of the taper sleeve; the first rolling element assembly rolls in the inner spherical surface and the first raceway;
the outer circle of the rotating shaft is a conical surface, and the inner circle of the ferrule is a conical surface parallel to the outer circle parallel to the rotating shaft; the second rolling element assembly rolls in a raceway between the revolving shaft and the ferrule;
a second raceway is formed in the top surface of the rotating shaft, and the third rolling element assembly rolls between the bottom surface of the taper sleeve and the second raceway;
the cross section of the elastic sleeve is C-shaped, and the elastic sleeve covers the top surface, the bottom surface and the outer circumference of the ferrule.
Further, a dustproof ring is arranged on the contact surface of the shell and the rotating shaft.
Furthermore, the center of the top of the base body is connected with a screw plug through internal threads.
The invention has the advantages that:
1) according to the rotary bearing follower, the first rolling element assembly, the second rolling element assembly and the third rolling element assembly are arranged, so that each motion is rolling motion, friction is reduced, and response speed is improved.
2) The rotary bearing follower can automatically center the center through the inner spherical surface of the seat ring, compensate the position and angle errors between the pressing point and the workpiece rotation center, and ensure that the workpiece rotates normally along with the rotary mechanism while being pressed by the follower.
3) The rotary bearing follower pre-fastens each moving part through an elastic sleeve, eliminates over-constraint in movement, and realizes automatic reset of the follower.
Drawings
Fig. 1 is a schematic structural diagram of a rotary bearing follower according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a rotary bearing follower according to an embodiment of the present invention includes a base 1, a housing 2, and a rotating shaft 3 passing through the housing 2 along a central axis, where the base 1 and the housing 2 are both hollow structures, and are clamped in opposite directions to form a closed housing, and are fixedly connected by bolts; the base body 1 of the bearing follower is arranged on a pressing plate, the top of the base body 1 is provided with a screw hole and a boss, and the base body 1 is fixed on the pressing plate by screws after the boss and the pressing plate are positioned; the base body 1 is sequentially provided with a seat ring 4, a first rolling element assembly 5 and a taper sleeve 6 along the axial direction; the excircle of the rotating shaft 3 is sequentially provided with a second rolling element assembly 7, a ferrule 8 and an elastic sleeve 9; the taper sleeve 6 is in rolling connection with the rotating shaft 3 axially through a third rolling element assembly 10; the bottom of the rotating shaft 3 is fixedly connected with a pressure head 12 through a screw 11.
Specifically, each of the first rolling element assembly 5, the second rolling element assembly 7 and the third rolling element assembly 10 is composed of a plurality of rolling elements and a cage, the cage uniformly separates the plurality of rolling elements, and the plurality of rolling elements can freely rotate in the cage; the outer side of the seat ring 4 is fixedly connected into the base body 1, and the inner side of the seat ring is an inner spherical surface; a first roller path is arranged on the conical surface of the taper sleeve 6; the first rolling element assembly 5 rolls in the inner spherical surface and the first raceway; a second raceway is formed on the top surface of the rotating shaft 3, and the third rolling element assembly 10 rolls between the bottom surface of the taper sleeve 6 and the second raceway; the cross-section of the elastic sleeve 9 is C-shaped, covering the top, bottom and outer circumference of the ferrule 8.
Specifically, a dust ring 13 is mounted on the contact surface of the housing 2 and the rotating shaft 3, the dust ring 13 is mounted in the housing 2, and the inner side surface of the dust ring is in contact with the rotating shaft 3; used for preventing sundries from entering the mechanism; the center of the top of the base body 1 is connected with a screw plug 14 through internal threads, and the screw plug is used for plugging the upper part of the base body 1 and preventing sundries from entering; when the pressure head 12 needs to be replaced, the screw plug 14 is removed, the screw 11 is loosened, the pressure head 12 is removed from the lower part of the rotating shaft 3, and a new pressure head 8 is replaced.
After the bearing follower is assembled, under the elastic action of the elastic sleeve 9, the second rolling element assembly 7 is driven to move upwards, the second rolling element assembly 7 drives the rotating shaft 3 to move upwards, the rotating shaft 3 drives the taper sleeve 6 to move upwards through the third rolling element assembly 10, and the taper sleeve 6 drives the first rolling element assembly 5 to move upwards and tightly press the first rolling element assembly on the seat ring 4, so that pre-tightening of moving parts is realized, play in a free state is prevented, and the moving parts are located at a central position.
The follower is fixed on the pressing plate, when a workpiece is pressed, the pressing plate drives the follower to move in place, and the pressure head 12 of the follower is pressed above the workpiece; under ideal conditions, the center of the pressing head 12 coincides with the rotation center of the workpiece, when the workpiece is driven by the workbench to rotate, the pressing force of the pressing plate acts, the pressing head 12 and the rotating shaft 3 rotate together with the workpiece, the rotating shaft 3 presses the third rolling element assembly 10 upwards, the third rolling element assembly 10 rolls on the lower end face of the taper sleeve 6, and rolling rotation of the pressing head 12 and the rotating shaft 3 is achieved, so that rotary machining of the workpiece is achieved.
Under the normal condition, due to the elastic deformation of the pressure plate or due to the processing and assembling errors of parts, the rotation center of the pressure head 12 is not overlapped with the rotation center of the workpiece, when the pressure plate is warped under the action of pressing force, the pressure head 12 acts on the workpiece to drive the rotating shaft 3, the third rolling element assembly 10, the taper sleeve 6 and the first rolling element assembly 5 to swing together along the inner spherical surface of the race 4 until the rotating shaft of the pressure head 12 is parallel to the rotating shaft of the workpiece; if the rotation axis of the pressure head 12 is overlapped with that of the workpiece, when the workpiece rotates, the workpiece drives the pressure head 12 and the rotating shaft 3 to do rotating motion along the lower plane of the taper sleeve 6, and meanwhile, the workpiece is pressed tightly; if the rotation axis of the pressure head 12 does not coincide with the rotation axis of the workpiece, when the workpiece rotates, the pressure head 12 and the revolving shaft 3 perform revolving motion along the rotation axis of the workpiece, and because the rotation axis of the pressure head 12 and the revolving shaft 3 does not coincide with the rotation axis of the workpiece, the pressure head 12 and the revolving shaft 3 revolve along the revolving shaft of the workpiece while performing rotation, the pressure head 12 and the revolving shaft 3 drive the second rolling element assembly 7 and the ferrule 8 to move for a corresponding distance along the radial direction, compress the elastic sleeve 9, and absorb over-constraint through elastic deformation of the elastic sleeve 9. So that the pressure head 12 and the revolving shaft 3 can normally revolve.
After the machining is finished, the pressing plate loosens the workpiece, the elastic deformation of the elastic sleeve 9 is released, and the ferrule 8, the second rolling element assembly 7 and the rotating shaft 3 are driven to return to the central position to be ready for next pressing.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (3)
1. The rotary bearing follower is characterized by comprising a base body (1), a shell (2) and a rotary shaft (3) penetrating through the shell (2) along a central shaft, wherein the base body (1) and the shell (2) are both of hollow structures, are clamped oppositely to form a closed shell and are fixedly connected through bolts;
the base body (1) is sequentially provided with a seat ring (4), a first rolling element assembly (5) and a taper sleeve (6) along the axial direction;
the excircle of the rotating shaft (3) is sequentially provided with a second rolling element assembly (7), a ferrule (8) and an elastic sleeve (9);
the taper sleeve (6) is axially connected with the rotating shaft (3) in a rolling way through a third rolling element assembly (10);
the bottom of the rotating shaft (3) is fixedly connected with a pressure head (12) through a screw (11);
the first rolling element assembly (5), the second rolling element assembly (7) and the third rolling element assembly (10) are all composed of a plurality of rolling elements and a retainer, the retainer uniformly separates the plurality of rolling elements, and the plurality of rolling elements can freely rotate in the retainer;
the outer side of the seat ring (4) is fixedly connected into the base body (1), and the inner side of the seat ring is an inner spherical surface; a first roller path is arranged on the conical surface of the taper sleeve (6); the first rolling element assembly (5) rolls in the inner spherical surface and the first raceway;
the excircle of the rotating shaft (3) is a conical surface, and the inner circle of the ferrule (8) is a conical surface parallel to the excircle of the rotating shaft (3); the second rolling element assembly (7) rolls in a raceway between the rotating shaft (3) and the ferrule (8);
a second raceway is formed in the top surface of the rotating shaft (3), and the third rolling element assembly (10) rolls between the bottom surface of the taper sleeve (6) and the second raceway;
the cross section of the elastic sleeve (9) is C-shaped, and the elastic sleeve covers the top surface, the bottom surface and the outer circumference of the ferrule (8).
2. The rotary bearing follower as recited in claim 1, wherein,
and a dustproof ring (13) is arranged on the contact surface of the shell (2) and the rotating shaft (3).
3. The rotary bearing follower as recited in claim 1, wherein,
the center of the top of the base body (1) is connected with a screw plug (14) through internal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110377352.9A CN113043056B (en) | 2021-04-08 | 2021-04-08 | Rotary bearing follower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110377352.9A CN113043056B (en) | 2021-04-08 | 2021-04-08 | Rotary bearing follower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113043056A CN113043056A (en) | 2021-06-29 |
| CN113043056B true CN113043056B (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110377352.9A Active CN113043056B (en) | 2021-04-08 | 2021-04-08 | Rotary bearing follower |
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| CN (1) | CN113043056B (en) |
Citations (7)
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| CN201565758U (en) * | 2009-11-06 | 2010-09-01 | 湖北汽车工业学院 | Internal installing and clamping telescopic press head with self-adapting center deviation |
| CN102242772A (en) * | 2010-05-10 | 2011-11-16 | 陈友勤 | Self-adaptive shock-absorbing bearing pedestal |
| CN103447804A (en) * | 2013-09-25 | 2013-12-18 | 十堰达博科工贸有限公司 | Pressure head device capable of automatically correcting center positioning deviation |
| CN105382513A (en) * | 2015-11-24 | 2016-03-09 | 河南省西峡汽车水泵股份有限公司 | Water seal assembling device and method for engine cooling water pump |
| CN106334898A (en) * | 2016-11-08 | 2017-01-18 | 上海工程技术大学 | Synchronous spinning clamp based on three-jaw chuck structure suitable for ring weld |
| CN106826316A (en) * | 2017-03-14 | 2017-06-13 | 环球工业机械（东莞）有限公司 | A kind of hold-down gear of rotational workpieces |
| CN207684591U (en) * | 2017-09-11 | 2018-08-03 | 深圳市盛世智能装备有限公司 | A kind of horizontal floating mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6494404B2 (en) * | 2015-05-01 | 2019-04-03 | キヤノン株式会社 | Vibration type driving device, image forming apparatus, positioning stage, and medical system |
| CN209256256U (en) * | 2018-12-10 | 2019-08-16 | 儒拉玛特自动化技术(苏州)有限公司 | A kind of adaptive pressure head structure of servo press angle |
-
2021
- 2021-04-08 CN CN202110377352.9A patent/CN113043056B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201565758U (en) * | 2009-11-06 | 2010-09-01 | 湖北汽车工业学院 | Internal installing and clamping telescopic press head with self-adapting center deviation |
| CN102242772A (en) * | 2010-05-10 | 2011-11-16 | 陈友勤 | Self-adaptive shock-absorbing bearing pedestal |
| CN103447804A (en) * | 2013-09-25 | 2013-12-18 | 十堰达博科工贸有限公司 | Pressure head device capable of automatically correcting center positioning deviation |
| CN105382513A (en) * | 2015-11-24 | 2016-03-09 | 河南省西峡汽车水泵股份有限公司 | Water seal assembling device and method for engine cooling water pump |
| CN106334898A (en) * | 2016-11-08 | 2017-01-18 | 上海工程技术大学 | Synchronous spinning clamp based on three-jaw chuck structure suitable for ring weld |
| CN106826316A (en) * | 2017-03-14 | 2017-06-13 | 环球工业机械（东莞）有限公司 | A kind of hold-down gear of rotational workpieces |
| CN207684591U (en) * | 2017-09-11 | 2018-08-03 | 深圳市盛世智能装备有限公司 | A kind of horizontal floating mechanism |
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| CN113043056A (en) | 2021-06-29 |
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