CN201769166U - Bearing race press mounting fixture - Google Patents
Bearing race press mounting fixture Download PDFInfo
- Publication number
- CN201769166U CN201769166U CN2010202786355U CN201020278635U CN201769166U CN 201769166 U CN201769166 U CN 201769166U CN 2010202786355 U CN2010202786355 U CN 2010202786355U CN 201020278635 U CN201020278635 U CN 201020278635U CN 201769166 U CN201769166 U CN 201769166U
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- bearing race
- cylinder
- positioning
- way station
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Abstract
The utility model discloses a bearing race press mounting fixture which comprises a lower cylinder, a middle cylinder, an upper cylinder, a supporting platform, a middle platform and a positioning platform, wherein the upper cylinder and the lower cylinder are connected by the middle cylinder; the top part of the upper cylinder is provided with the supporting platform; the positioning platform is arranged above the supporting platform; the supporting platform and the positioning platform both have short cylindrical structures; the middle platform is arranged between the supporting platform and the positioning platform; the middle platform also has the short cylindrical structure; the diameter of the middle platform is larger than that of the positioning platform and smaller than that of the supporting platform; the axis lines of the middle platform and the positioning platform are on the same straight line; and the top surface of the middle platform transits to the circumference surface by a circular surface. The bearing race press mounting fixture reduces the intensity of pressure of the unit area by enlarging the contacting area of the bearing race and the press mounting fixture and can effectively prevent the edge of the outer ring at the top part of the fixture from being damaged, thus greatly prolonging the service life of the fixture and eliminating the malady of frequent repair.
Description
Technical field
The utility model belongs to technical field of tooling clamps, specifically, and 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 in the utility model is to provide a kind of bearing race press-fitting tool of damaging of effectively preventing.
The technical solution of the utility model is as follows: a kind of bearing race press-fitting tool, 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 utility model 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 utility model 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 utility model.
Fig. 2 is the structural representation of background technology.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, the utility model 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 utility model 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 utility model 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 the utility model unit are is reduced to 1/3rd, reduce the damage probability of frock so greatly, improved the service life of frock.
Claims (3)
1. bearing race press-fitting tool, 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 end face of way station (6) and the periphery by the arc surface transition.
2. bearing race press-fitting tool 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. bearing race press-fitting tool 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 |
|---|---|---|---|
| CN2010202786355U CN201769166U (en) | 2010-08-02 | 2010-08-02 | Bearing race press mounting fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202786355U CN201769166U (en) | 2010-08-02 | 2010-08-02 | Bearing race press mounting fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201769166U true CN201769166U (en) | 2011-03-23 |
Family
ID=43749000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202786355U Expired - Lifetime CN201769166U (en) | 2010-08-02 | 2010-08-02 | Bearing race press mounting fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201769166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905413A (en) * | 2010-08-02 | 2010-12-08 | 力帆实业(集团)股份有限公司 | Pressing fixture for bearing seat ring of motorcycle steering column |
| CN102489989A (en) * | 2011-11-30 | 2012-06-13 | 力帆实业(集团)股份有限公司 | Lower tooling of press-mounting head tube bearing race |
-
2010
- 2010-08-02 CN CN2010202786355U patent/CN201769166U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905413A (en) * | 2010-08-02 | 2010-12-08 | 力帆实业(集团)股份有限公司 | Pressing fixture for bearing seat ring of motorcycle steering column |
| CN102489989A (en) * | 2011-11-30 | 2012-06-13 | 力帆实业(集团)股份有限公司 | Lower tooling of press-mounting head tube bearing race |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110323 Effective date of abandoning: 20110831 |