CN110848239A - Bearing shaft and machining method thereof - Google Patents
Bearing shaft and machining method thereof Download PDFInfo
- Publication number
- CN110848239A CN110848239A CN201911265380.0A CN201911265380A CN110848239A CN 110848239 A CN110848239 A CN 110848239A CN 201911265380 A CN201911265380 A CN 201911265380A CN 110848239 A CN110848239 A CN 110848239A
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- China
- Prior art keywords
- bearing
- shaft body
- shaft
- inner ring
- limiting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a bearing shaft, comprising: a shaft body; and a bearing sleeved on the shaft body; the bearing is a needle bearing with an inner ring, the inner ring of the bearing is fastened on the shaft body, and the outer ring of the bearing is rotatably arranged on the shaft body; the shaft body is formed with a first limit portion and a second limit portion that position the bearing in the axial direction of the shaft body. A processing method of a bearing shaft comprises the steps of processing and forming a first limiting part and an annular groove on a shaft body; the bearing is pressed on the shaft body through a press machine, so that one end part of the bearing inner ring is abutted against the first limiting part; the pressure head of the press machine acts on the end face where the conical hole is formed in the shaft body, so that the end portion of the shaft body is crushed to form a second limiting portion, wherein the annular groove is adjacent to the second limiting portion and is formed to provide an extrusion deformation space.
Description
Technical Field
The invention relates to the technical field of shafts, in particular to a bearing shaft and a machining method thereof.
Background
The non-woven fabric washer is a tool for washing the rubber blanket. Generally, the non-woven fabric cleaner is provided with a bearing plate and a mounting plate, the bearing plate can do linear reciprocating motion in the horizontal direction on the mounting plate through a driving mechanism, and in order to enable the bearing plate to stably and reliably move, a guide unit is generally arranged between the bearing plate and the mounting plate. The conventional guide unit includes a guide member disposed on the bearing plate and a sliding groove disposed on the mounting plate, and the conventional guide member has a problem of poor guiding effect, so that it is necessary to research a bearing shaft and a processing method thereof.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides the bearing shaft with simple structure and good guiding effect and the processing method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: a bearing shaft, comprising: a shaft body; and a bearing sleeved on the shaft body; the bearing is a needle bearing with an inner ring, the inner ring of the bearing is fastened on the shaft body, and the outer ring of the bearing is rotatably arranged on the shaft body; the shaft body is formed with a first limit portion and a second limit portion that position the bearing in the axial direction of the shaft body.
Preferably, an interference fit is adopted between the inner ring of the bearing and the shaft body.
Preferably, the first position-limiting part is configured as a cylindrical boss for limiting an axial position of one end part of the bearing inner ring; the diameter of the cylindrical boss is smaller than the outer diameter of the bearing inner ring and larger than the inner diameter of the bearing inner ring.
Preferably, an axial direction of the shaft body is defined as a height direction of the first limit portion, and a range of a height of the first limit portion is: 0.5 to 1.0 mm.
Preferably, the second stopper portion is configured as a flange for limiting an axial position of the other end portion of the bearing inner race.
Preferably, an end surface of the shaft body is provided with a tapered hole for facilitating the crushing of a press machine to form the second limiting part.
Preferably, the second position-limiting portion extends along a radial direction of the shaft body, and an outer edge of the second position-limiting portion is located between an inner diameter and an outer diameter of the bearing inner race.
Preferably, a regular hexagonal prism surface is formed on an outer circumferential wall surface of the shaft body.
Preferably, an annular groove is formed in the shaft body, and the annular groove is adjacent to the second limiting portion.
A method for processing a bearing shaft comprises the steps of processing and forming a first limiting part, an annular groove and a conical hole on a shaft body; the bearing is pressed on the shaft body through a press machine, so that one end part of the bearing inner ring is abutted against the first limiting part; the pressure head of the press machine acts on the end face where the conical hole is formed in the shaft body, so that the end portion of the shaft body is crushed to form a second limiting portion, wherein the annular groove is adjacent to the second limiting portion and is formed to provide an extrusion deformation space.
Compared with the prior art, the invention has the beneficial effects that: according to the bearing shaft and the processing method thereof, the inner ring of the bearing is fastened on the shaft body, the outer ring is rotatably arranged on the shaft body, and the first limiting part and the second limiting part for positioning the bearing in the axial direction of the shaft body are formed on the shaft body;
the bearing inner ring and the shaft body are in interference fit, so that the bearing has the advantages of convenience in installation and stability and reliability in connection;
the conical hole can reduce the structural strength of the end part of the shaft body so as to be beneficial to the forming of the second limiting part;
the regular hexagonal prism surface is beneficial to the installation and the disassembly of the shaft body, and has the advantage of convenient installation;
the annular groove can provide an extrusion deformation space, so that the bearing is prevented from being damaged;
when the bearing and the shaft body are installed, the bearing is pressed on the shaft body through a press machine so that one end part of the inner ring of the bearing is abutted against the first limiting part; and the pressure head of the press machine acts on the end face where the conical hole is formed in the shaft body, so that the end part of the shaft body is crushed to form a second limiting part, and the press machine has the advantage of convenience in processing.
Drawings
FIG. 1 is a schematic view of a bearing shaft according to the present invention;
FIG. 2 is an exploded view of the bearing shaft of the present invention;
FIG. 3 is a schematic cross-sectional view of a bearing shaft according to the present invention;
FIG. 4 is a schematic cross-sectional view of a shaft according to the present invention;
FIG. 5 is a schematic view of the second limiting portion of the present invention.
In the figure: 10. a shaft body; 11. a first limiting part; 12. a second limiting part; 13. a tapered hole; 14. an annular groove; 15. a regular hexagonal prism face; 20. a bearing; 30. and (4) pressing head.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1 to 4, the present invention provides a bearing shaft including: a shaft body 10 and a bearing 20 sleeved on the shaft body 10; the bearing 20 is a needle bearing with an inner ring, the inner ring of the bearing 20 is fastened on the shaft body 10, and the outer ring is rotatably arranged on the shaft body 10; a first stopper portion 11 and a second stopper portion 12 that position the bearing 20 in the axial direction of the shaft body 10 are formed on the shaft body 10; the first limiting part 11 and the second limiting part 12 are respectively located at two opposite ends of the bearing 20, and the bearing has the advantages of simple structure, good guiding effect and accurate installation and positioning. In the scheme, as shown in fig. 2, a press-fitting section a for mounting the bearing 20 is formed on the shaft body 10, the first limiting portion 11 and the second limiting portion 12 are respectively located at two opposite ends of the press-fitting section, a mounting section B for connecting with other parts is further formed on the shaft body 10, and the mounting section B and the press-fitting section a are coaxially arranged.
As an embodiment of the present scheme, as shown in fig. 1 to 4, an interference fit is adopted between the inner ring of the bearing 20 and the shaft body 10, and the present scheme has the advantages of convenient installation and stable and reliable connection.
As an embodiment of the present solution, as shown in fig. 1 to 4, the first limiting portion 11 is configured as a cylindrical boss for limiting an axial position of one end portion of the inner ring of the bearing 20; the diameter of the cylindrical boss is smaller than the outer diameter of the inner ring of the bearing 20 and larger than the inner diameter of the inner ring of the bearing 20; if the diameter of the cylindrical boss is larger than the outer diameter of the inner ring of the bearing 20, the disassembly and assembly of the bearing 20 are affected, and the use is inconvenient; if the diameter of the cylindrical boss is smaller than the inner diameter of the inner ring of the bearing 20, the limit of the inner ring of the bearing 20 cannot be realized; in this scheme, the internal diameter of bearing 20 inner circle is named M, the external diameter of bearing 20 inner circle is named N, the diameter of first spacing portion 11 is named Q, M: q: the range of the ratio of N is as follows: 1: 1.1-1.2: 1.2 to 1.3; preferably, M: q: the ratio of N is 1:1.159: 1.295.
As an embodiment of the present disclosure, as shown in fig. 1 to 4, an axial direction of the shaft body 10 is defined as a height direction of the first limiting portion 11, and a range of a height of the first limiting portion 11 is: 0.5-1.0 mm; if the height of the first stopper portion 11 is too high, the overall axial length becomes too long.
As an embodiment of this aspect, as shown in fig. 1 to 4, the second stopper portion 12 is configured as a burring for restricting the axial position of the other end portion of the inner race of the bearing 20.
As an embodiment of the present disclosure, as shown in fig. 1 to 4, a tapered hole 13 is formed on an end surface of the shaft body 10 to facilitate the press to crush and form the second limiting portion 12; in this embodiment, as shown in fig. 5, the second stopper portion 12 is formed by crushing the ram 30 of the press, and the tapered hole 13 is provided to reduce the structural strength of the end portion of the shaft body 10, thereby facilitating the molding of the second stopper portion 12.
As an embodiment of this embodiment, as shown in fig. 4 and 5, the second stopper portion 12 extends in the radial direction of the shaft body 10, and the outer edge of the second stopper portion 12 is interposed between the inner diameter and the outer diameter of the inner ring of the bearing 20.
As an embodiment of the present disclosure, as shown in fig. 2, a regular hexagonal prism surface 15 is formed on an outer circumferential wall surface of the shaft body 10, and the regular hexagonal prism surface 15 is beneficial to the installation and the removal of the shaft body 10, and has an advantage of convenient installation; in the scheme, the regular hexagonal prism surface 15 is positioned between the mounting section B and the press mounting section A.
As an embodiment of the present disclosure, as shown in fig. 1 to 4, an annular groove 14 is disposed on the shaft body 10, the annular groove 14 is located on the press-fitting section a, and the annular groove 14 is disposed adjacent to the second limiting portion 12; in this scheme, when the pressure head 30 of press acted on the axis body 10 tip, the axis body 10 warp because of the extrusion, and the radial dimension of axis body 10 can be because of the grow that extrudees to lead to bearing 20 to damage because of the deformation of axis body 10, can avoid the appearance of above-mentioned problem after having established ring channel 14 with adding, ring channel 14 can provide an extrusion deformation space, avoids bearing 20 to damage. In the scheme, the ratio of the groove depth to the groove width of the annular groove 14 is 2:3, wherein the groove depth refers to the dimension of the press mounting section A in the radial direction, the groove width refers to the dimension of the press mounting section A in the axial direction, and the groove depth refers to the difference between the outer diameter of the press mounting section A and the diameter of a circle where the groove bottom of the annular groove 14 is located.
A method for processing a bearing shaft is shown in figures 1 to 5, and comprises the steps of processing and forming a first limiting part 11, an annular groove 14 and a tapered hole 13 on a press-fitting section A of a shaft body 10, wherein the tapered hole 13 is positioned on one end face of the press-fitting section A; pressing the bearing 20 onto the press-fitting section a of the shaft body 10 by a press machine so that one end of the inner ring of the bearing 20 abuts against the first limiting part 11; the pressure head of the press is applied to the end face of the shaft body 10 where the tapered hole 13 is located, so that the end of the shaft body 10 is crushed to form the second limiting portion 12, wherein the annular groove 14 is provided adjacent to the second limiting portion 12 to provide a compression deformation space.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A bearing shaft, comprising:
a shaft body (10); and
a bearing (20) sleeved on the shaft body (10);
the bearing (20) is a needle bearing with an inner ring, the inner ring of the bearing (20) is fastened on the shaft body (10), and the outer ring is rotatably arranged on the shaft body (10); a first limit portion (11) and a second limit portion (12) for positioning the bearing (20) in the axial direction of the shaft body (10) are formed on the shaft body (10).
2. The bearing shaft according to claim 1,
and an inner ring of the bearing (20) is in interference fit with the shaft body (10).
3. The bearing shaft according to claim 1,
the first limiting part (11) is configured as a cylindrical boss used for limiting the axial position of one end part of the inner ring of the bearing (20); the diameter of the cylindrical boss is smaller than the outer diameter of the inner ring of the bearing (20) and larger than the inner diameter of the inner ring of the bearing (20).
4. The bearing shaft according to claim 3, wherein an axial direction of the shaft body (10) is defined as a height direction of the first stopper portion (11), and a height of the first stopper portion (11) has a range of values: 0.5 to 1.0 mm.
5. The bearing shaft according to claim 1,
the second stopper portion (12) is configured as a flange for limiting the axial position of the other end portion of the inner race of the bearing (20).
6. The bearing shaft according to claim 1,
one end face of the shaft body (10) is provided with a tapered hole (13) which is beneficial to a press machine to crush and form the second limiting part (12).
7. The bearing shaft according to claim 1, wherein the second retainer portion (12) extends in a radial direction of the shaft body (10), and an outer edge of the second retainer portion (12) is interposed between an inner diameter and an outer diameter of the inner race of the bearing (20).
8. The bearing shaft according to claim 1, wherein the outer circumferential wall surface of the shaft body (10) is formed with a regular hexagonal prism surface (15).
9. The bearing shaft according to claim 1, wherein the shaft body (10) is provided with an annular groove (14), and the annular groove (14) is provided adjacent to the second limiting portion (12).
10. A method for processing a bearing shaft is characterized by comprising
A first limiting part (11), an annular groove (14) and a tapered hole (13) are machined and formed on the shaft body (10);
the bearing (20) is pressed on the shaft body (10) through a press machine, so that one end part of the inner ring of the bearing (20) is abutted against the first limiting part (11);
the pressure head of the press machine acts on the end face where the conical hole (13) is located on the shaft body (10) so that the end portion of the shaft body (10) is crushed to form a second limiting portion (12), wherein the annular groove (14) is adjacent to the second limiting portion (12) and is formed to provide an extrusion deformation space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265380.0A CN110848239A (en) | 2019-12-11 | 2019-12-11 | Bearing shaft and machining method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265380.0A CN110848239A (en) | 2019-12-11 | 2019-12-11 | Bearing shaft and machining method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110848239A true CN110848239A (en) | 2020-02-28 |
Family
ID=69608630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911265380.0A Pending CN110848239A (en) | 2019-12-11 | 2019-12-11 | Bearing shaft and machining method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110848239A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763390A (en) * | 2005-08-31 | 2006-04-26 | 上海人本轴承有限公司 | Inside and outside flange connecting apparatus for wheel hub bearing and manufacturing method thereof |
| CN101249776A (en) * | 2007-02-23 | 2008-08-27 | Ntn株式会社 | Bearing apparatus for wheel |
| CN204788186U (en) * | 2015-05-25 | 2015-11-18 | 新昌县开源汽车轴承有限公司 | Bearing axial internal clearance frock |
| CN105904916A (en) * | 2016-06-19 | 2016-08-31 | 重庆奇可比自行车有限公司 | Left one-way bearing shaft of bicycle with pedals rotating forwards and backwards for driving |
| JP2017013079A (en) * | 2015-06-29 | 2017-01-19 | Ntn株式会社 | Processing method of bearing device for wheel |
| CN106794709A (en) * | 2014-10-10 | 2017-05-31 | Ntn株式会社 | Wheel bearing equipment |
-
2019
- 2019-12-11 CN CN201911265380.0A patent/CN110848239A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763390A (en) * | 2005-08-31 | 2006-04-26 | 上海人本轴承有限公司 | Inside and outside flange connecting apparatus for wheel hub bearing and manufacturing method thereof |
| CN101249776A (en) * | 2007-02-23 | 2008-08-27 | Ntn株式会社 | Bearing apparatus for wheel |
| CN106794709A (en) * | 2014-10-10 | 2017-05-31 | Ntn株式会社 | Wheel bearing equipment |
| CN204788186U (en) * | 2015-05-25 | 2015-11-18 | 新昌县开源汽车轴承有限公司 | Bearing axial internal clearance frock |
| JP2017013079A (en) * | 2015-06-29 | 2017-01-19 | Ntn株式会社 | Processing method of bearing device for wheel |
| CN105904916A (en) * | 2016-06-19 | 2016-08-31 | 重庆奇可比自行车有限公司 | Left one-way bearing shaft of bicycle with pedals rotating forwards and backwards for driving |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200228 |