CN202963200U - Finishing punch for cylindrical shell of three-fairway constant velocity universal joint - Google Patents
Finishing punch for cylindrical shell of three-fairway constant velocity universal joint Download PDFInfo
- Publication number
- CN202963200U CN202963200U CN 201220523050 CN201220523050U CN202963200U CN 202963200 U CN202963200 U CN 202963200U CN 201220523050 CN201220523050 CN 201220523050 CN 201220523050 U CN201220523050 U CN 201220523050U CN 202963200 U CN202963200 U CN 202963200U
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- punch
- finishing punch
- constant velocity
- finishing
- fairway
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Abstract
The utility model discloses a finishing punch for a cylindrical shell of a three-fairway constant velocity universal joint. The finishing punch adopts the structure that three arc-shaped bumps are uniformly formed on the cylindrical outer wall of the finishing punch; the punch head is in an arc surface structure; and the outer wall of the finishing punch in the length direction of the finishing punch is a concave arc-shaped surface structure. The cylindrical shell of the three-fairway constant velocity universal joint finished by the punch is easy to assemble and is good in matching accuracy; an inner cavity of the cylindrical shell is in a convex arc-shaped structure; drum type errors in channels can be avoided; the transmission of a transmission shaft is smooth; and the service life of the three-fairway constant velocity universal joint is long.
Description
Technical field
The utility model belongs to the constant velocity cardan joint technical field, relates in particular to a kind of three alley constant velocity cardan joint cylinder outer race blank finishing punch.
Background technology
Three alley constant velocity cardan joints are one of moving system core parts of automobile front drive.Three alley constant velocity cardan joints of an allusion quotation shape are comprised of cylinder outer race, inner race, retainer and three steel balls.Cylinder outer race is a precise forming part, the shank that comprises cylinder outer race housing and housing lower end setting, described housing is provided with inner chamber, described inner chamber is made of center cylindrical cavity and center cylindrical cavity outer equally distributed three ball track chambeies, its distinguishing feature is that the inner chamber of garden barrel shape has three precision forms, the cylindricality raceway groove is assembled into a joint that can swing flexibly and rotate with the inner race with respective channels, retainer and three steel balls in certain angle.Manufacturing firm all adopts inner chamber precision forging blank technology both at home and abroad at present, can satisfy required precision like this, has reduced again manufacturing cost and cycle, also meets the trend of world today's development of manufacturing simultaneously.Three alley constant velocity cardan joint cylinder outer race blank study on precision forging technologies in prior art, comprise warm extrusion-cold-finish technique, Zhao of Wanxiang Machinery Co Ltd, Zhejiang becomes unit to be published in " bearing " 2000.NO.4 constant velocity cardan joint cylinder outer race warm extrusion-cold-finish technique: round steel blanking one fine turning outer circle end face and chamfering one heating in medium frequency one warm extrusion one spheroidizing one check one bead one phosphatization, saponification one cold-finish, but the raceway groove of its precision form is decile and the linearly parallel distribution in the space.In prior art, the cylinder outer race raceway groove is trisection and the linearly parallel distribution in the space.Although the assembling of such structure is accurate, the nozzle gap is little, and assembly difficulty is high.In addition, in normal entrucking was used, sliding friction position the most frequently was the cylinder outer race stage casing, this zone can produce rapidly wearing and tearing, make three raceway grooves of cylinder outer race present Drum-shaped Error, feature small in ends, broad in the middle appears in fit clearance, causes power transmission shaft abnormal sound and jitter phenomenon early to occur.
Summary of the invention
The utility model provides a kind of and is easy to assemble, quality of fit is good, inner chamber cylinder outer race is convex structure, raceway groove and can present Drum-shaped Error, and transmission shaft driven is steady, three alley constant velocity cardan joint cylinder outer race finishing punch of long service life.
The utility model is realized by following technical solution:
Three alley constant velocity cardan joint cylinder outer race finishing punch evenly are provided with three circular arc projections on described finishing punch cylindrical body outer wall, and described punch head is globoidal structure, and described finishing punch outer wall is the concave arc surface structure along this finishing punch length direction.
The cylindrical body outer wall of described finishing punch is along finishing punch length direction the structure that the two ends diameter is large, mid diameter is little.
Described circular arc projection is along finishing punch length direction that two ends are thick, the structure of intermediate thin.
The utility model compared with prior art has following beneficial effect:
Adopt in the utility model finishing three alley constant velocity cardan joint cylinder outer race ironing processes, blank material is close to the finishing punch and is flowed along the die direction of motion under the effect of finishing die, the ironing die of taper is with the centripetal punch that presses to of cup-shaped blank, because finishing punch outer wall is the concave arc surface structure along this finishing punch length direction, under the effect of blank material centripetal force, and the punch that makes material be close to distortion extends shaping.After distortion finished and extracts punch out, the constant velocity cardan joint cylinder outer race by the punch distortion had kept convex face cavity shape after metallic elastic recovers vertically.At first its advantage is that three alley constant velocity cardan joint cylinder outer races easily assemble, prior advantage is under equal abrasive conditions, three alley constant velocity cardan joint cylinder outer races of convex face cavity shape can keep quality of fit, long service life more muchly than the cylinder outer race of parallel channel.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the A_A view of Fig. 1.
Sequence number in figure: 1, circular arc projection, 2, the punch head, 3, the concave arc surface structure.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, shown in Figure 2, a kind of three alley constant velocity cardan joint cylinder outer race finishing punch, evenly be provided with three circular arc projections 1 on described finishing punch cylindrical body outer wall, described punch head 2 is globoidal structure, described finishing punch outer wall is concave arc surface structure 3 along this finishing punch length direction, be that described finishing punch cylindrical body outer wall is along this finishing punch length direction the structure that the two ends diameter is large, mid diameter is little, described circular arc projection 1 is along finishing punch length direction that two ends are thick, the structure of intermediate thin.。
Embodiment is just for the ease of understanding the technical solution of the utility model; do not consist of the restriction to the utility model protection domain; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present utility model, above scheme being done that does not break away from technical solutions of the utility model is within all still belonging to the utility model protection domain.
Claims (3)
1. three alley constant velocity cardan joint cylinder outer race finishing punch, evenly be provided with three circular arc projection ⑴ on described finishing punch cylindrical body outer wall, described punch head ⑵ is globoidal structure, it is characterized in that: described finishing punch outer wall is concave arc surface structure ⑶ along this finishing punch length direction.
2. three alley constant velocity cardan joint cylinder outer race finishing punch according to claim 1, it is characterized in that: the cylindrical body outer wall of described finishing punch is along finishing punch length direction the structure that the two ends diameter is large, mid diameter is little.
3. three alley constant velocity cardan joint cylinder outer race finishing punch according to claim 1 and 2 is characterized in that: described circular arc projection ⑴ is along finishing punch length direction that two ends are thick, the structure of intermediate thin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523050 CN202963200U (en) | 2012-10-14 | 2012-10-14 | Finishing punch for cylindrical shell of three-fairway constant velocity universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523050 CN202963200U (en) | 2012-10-14 | 2012-10-14 | Finishing punch for cylindrical shell of three-fairway constant velocity universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202963200U true CN202963200U (en) | 2013-06-05 |
Family
ID=48504330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220523050 Expired - Fee Related CN202963200U (en) | 2012-10-14 | 2012-10-14 | Finishing punch for cylindrical shell of three-fairway constant velocity universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202963200U (en) |
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2012
- 2012-10-14 CN CN 201220523050 patent/CN202963200U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131014 |