CN101905413B - Pressing fixture for bearing seat ring of motorcycle steering column - Google Patents
Pressing fixture for bearing seat ring of motorcycle steering column Download PDFInfo
- Publication number
- CN101905413B CN101905413B CN2010102424683A CN201010242468A CN101905413B CN 101905413 B CN101905413 B CN 101905413B CN 2010102424683 A CN2010102424683 A CN 2010102424683A CN 201010242468 A CN201010242468 A CN 201010242468A CN 101905413 B CN101905413 B CN 101905413B
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- China
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- platform
- way station
- column body
- diameter
- bearing seat
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- Expired - Fee Related
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Abstract
The invention discloses a pressing fixture for a bearing seat ring of a motorcycle steering column, comprising a lower column body, a middle column body, an upper column body, a supporting platform, a middle platform and a locating platform, wherein the upper column body and the lower column body are connected through the middle column body; the supporting platform is mounted at the top part of the upper column body; the locating platform is mounted above the supporting platform; the supporting platform and the locating platform are both of short cylinder structures; the middle platform is mounted between the supporting platform and the locating platform; the middle platform is of a short cylinder structure; the diameter of the middle platform is greater than the diameter of the locating platform but smaller than the diameter of the supporting platform; the axis of the middle platform and the axis of the locating platform are located on the same straight line; and the top surface and the circumferential face of the middle platform are in circular arc face transition. The fixture reduces the intensity of pressure of unit area by increasing the contacting area with the bearing seat ring, is capable of effectively preventing the damage of the edge of the outer ring at top of the fixture, greatly prolongs the service life of the fixture, and eliminates the shortcoming of frequent maintenance.
Description
Technical field
The invention belongs to technical field of tooling clamps, specifically, the particularly press-fitting tool of bearing seat ring of motorcycle steering column.
Background technology
Cooperate by bearing between direction column of motorcycle and the seat tube, relatively rotate realizing.At present, in seat tube, bearings mounted the time, all be bearing race to be pressed in the seat tube by special frock.As shown in Figure 2, existing frock is made up of lower prop 1, middle cylinder 2, last cylinder 3, brace table 4 and positioning table 5, link to each other by middle cylinder 2 between the wherein upper and lower cylinder 3,1, at the top of last cylinder 3 brace table 4 is set, brace table 4 is provided with positioning table 5, and the diameter of this positioning table 5 is less than the diameter of brace table 4.In the time of the pressing bearing seat ring, earlier bearing race is sleeved on the positioning table 5, fitted in the end face of bearing race and the edge of brace table 4 end faces, the reduced diameter section of bearing race endoporus contacts with the periphery of positioning table 5, the pressure head of controlling aerostatic press then moves downward, it is descending to make the pressure head band seat tube, is inserted in bearing race by force until seat tube bearing at end chamber and gets final product.Because brace table has only single edge, outer ring to contact with bearing race with positioning table in the above-mentioned frock, bonded area between frock and the bearing race is little, it is big that frock is born pressure, impact in use is stressed, cause the edge deformation of brace table and positioning table easily or break, shortened the service life of frock greatly, a common frock on average uses a week to reprocess, and will scrap in one month.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pressing fixture for bearing seat ring of motorcycle steering column of damaging of effectively preventing.
Technical scheme of the present invention is as follows: a kind of pressing fixture for bearing seat ring of motorcycle steering column, comprise lower prop, middle cylinder, last cylinder, brace table, way station and positioning table, wherein go up, link to each other by middle cylinder between the lower prop, top at last cylinder is provided with brace table, the top of brace table is provided with positioning table, and brace table and positioning table are the short cylindrical structure, between described brace table and positioning table, be provided with way station, this way station also is the short cylindrical structure, the diameter of way station is greater than the diameter of positioning table, but diameter less than brace table, the axial line of described way station and the axial line of positioning table on same straight line, and between the end face of way station and the periphery by the arc surface transition.
The present invention is by setting up way station between brace table and positioning table, and the edge at way station top is an arc surface, the size of this arc surface with treat that the cancave cambered surface in the pressing bearing seat ring endoporus adapts, the contact area of this sample frock and bearing race has increased more than the twice, press-fit and be subjected to same pressure in the process, the pressure that is distributed in the frock unit are is reduced to 1/3rd, thereby reduced the damage probability of frock greatly, improved the service life of frock, a frock can be used more than 3 years.
As preferably, the radius of transition circle cambered surface is 3-4mm between described way station end face and the periphery, and the cancave cambered surface in this arc surface and the bearing race endoporus fits like a glove basically, makes frock stressed better, has further reduced the damage probability of frock.
For simplified structure, make things convenient for processing and fabricating, described lower prop, middle cylinder, to go up cylinder, brace table, way station and positioning table be monolithic construction, six axial line is on same straight line.
Beneficial effect: the present invention can prevent effectively that by increasing the pressure that reduces unit are with the contact area of bearing race the edge, outer ring at frock top is damaged, and has prolonged the service life of frock greatly, has eliminated the disadvantage of often reprocessing.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of background technology.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1, the present invention is a monoblock type notch cuttype column structure, form by lower prop 1, middle cylinder 2, last cylinder 3, brace table 4, positioning table 5 and way station 6, wherein the top of lower prop 1 links to each other with the bottom surface of middle cylinder 2, the diameter of middle cylinder 2 is greater than the diameter of lower prop 1, the end face of middle cylinder 2 links to each other the equal diameters of the diameter of last cylinder 3 and lower prop 1 with the bottom of last cylinder 3.The described end face of going up cylinder 3 links to each other with the bottom of brace table 4, the diameter of this brace table 4 is less than the diameter of last cylinder 3, and the end face of brace table 4 links to each other with the bottom of way station 6, the diameter of way station 6 is less than the diameter of brace table 4, pass through the arc surface transition between the end face of way station 6 and the periphery, the radius of this transition circle cambered surface is 3-4mm, is preferably 3.5mm in the present embodiment.The end face of described way station 6 links to each other with the bottom of positioning table 5, and the diameter of positioning table 5 is less than the diameter of way station 6, and positioning table 5, way station 6, brace table 4, goes up the axial line of cylinder 3, middle cylinder 2 and lower prop 1 six on same straight line.
As can be known from Fig. 1, when the present invention is used for the pressing bearing seat ring, earlier bearing race 7 is sleeved on positioning table 5 and the way station 6, fitted in the end face of bearing race 7 and the edge of brace table 4 end faces, the reduced diameter section of bearing race endoporus contacts with the periphery of positioning table 5, the arc surface of cancave cambered surface in the bearing race endoporus and way station 6 top is fitted, the pressure head of controlling aerostatic press then moves downward, it is descending to make the pressure head band seat tube 8, is inserted in bearing race 7 by force until seat tube bearing at end chambers 8 and gets final product.Because the contact area between the present invention and the bearing race has increased more than the twice than traditional structure, press-fit and be subjected to same pressure in the process, the pressure that is distributed in unit are of the present invention is reduced to 1/3rd, has reduced the damage probability of frock so greatly, has improved the service life of frock.
Claims (3)
1. pressing fixture for bearing seat ring of motorcycle steering column, comprise lower prop (1), middle cylinder (2), last cylinder (3), brace table (4) and positioning table (5), wherein go up, lower prop (3,1) links to each other by middle cylinder (2) between, at the top of last cylinder (3) brace table (4) is set, the top of brace table (4) is provided with positioning table (5), and brace table (4) and positioning table (5) are the short cylindrical structure, it is characterized in that: between described brace table (4) and positioning table (5), be provided with way station (6), this way station (6) also is the short cylindrical structure, the diameter of way station (6) is greater than the diameter of positioning table (5), but diameter less than brace table (4), the axial line of the axial line of described way station (6) and positioning table (5) on same straight line, and between the periphery of the end face of way station (6) and way station (6) by the arc surface transition.
2. pressing fixture for bearing seat ring of motorcycle steering column according to claim 1 is characterized in that: the radius of transition circle cambered surface is 3-4mm between described way station (6) end face and the periphery.
3. pressing fixture for bearing seat ring of motorcycle steering column according to claim 1 and 2, it is characterized in that: described lower prop (1), middle cylinder (2), last cylinder (3), brace table (4), way station (6) and positioning table (5) are monolithic construction, and six axial line is on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102424683A CN101905413B (en) | 2010-08-02 | 2010-08-02 | Pressing fixture for bearing seat ring of motorcycle steering column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102424683A CN101905413B (en) | 2010-08-02 | 2010-08-02 | Pressing fixture for bearing seat ring of motorcycle steering column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101905413A CN101905413A (en) | 2010-12-08 |
| CN101905413B true CN101905413B (en) | 2011-08-31 |
Family
ID=43261077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102424683A Expired - Fee Related CN101905413B (en) | 2010-08-02 | 2010-08-02 | Pressing fixture for bearing seat ring of motorcycle steering column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101905413B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341754B (en) * | 2013-06-27 | 2015-09-02 | 力帆实业(集团)股份有限公司 | A kind of motorcycle steering column takes up method of completing the square |
| CN104209924A (en) * | 2014-07-09 | 2014-12-17 | 新兴铸管股份有限公司 | Shaft sleeve assembling and disassembling tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673661A (en) * | 1970-09-29 | 1972-07-04 | Federal Mogul Corp | Roller bearing assembly fixture |
| JP2005238416A (en) * | 2004-02-27 | 2005-09-08 | Toyota Motor Corp | Apparatus and method for mounting component |
| CN2712535Y (en) * | 2004-07-22 | 2005-07-27 | 重庆宗申技术开发研究有限公司 | Engine right box bearing press-loading machine |
| CN201036863Y (en) * | 2007-04-18 | 2008-03-19 | 许晓华 | Simple bearing press-fitting device |
| CN201769166U (en) * | 2010-08-02 | 2011-03-23 | 力帆实业(集团)股份有限公司 | Bearing race press mounting fixture |
-
2010
- 2010-08-02 CN CN2010102424683A patent/CN101905413B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101905413A (en) | 2010-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20200802 |