CN114001098B - Hub bearing production process - Google Patents
Hub bearing production process Download PDFInfo
- Publication number
- CN114001098B CN114001098B CN202111297547.9A CN202111297547A CN114001098B CN 114001098 B CN114001098 B CN 114001098B CN 202111297547 A CN202111297547 A CN 202111297547A CN 114001098 B CN114001098 B CN 114001098B
- Authority
- CN
- China
- Prior art keywords
- hub bearing
- rivet
- rivet head
- outer ring
- degrees
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000005056 compaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013100 final test Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
-
- 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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/52—Positive connections with plastic deformation, e.g. caulking or staking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses a hub bearing production process, which comprises the following steps: firstly, assembling a hub bearing; secondly, placing the assembled hub bearing on a clamp for clamping; thirdly, riveting and rotating the hub bearing through a rotary rivet, wherein the inclination angle of the rivet is 5.5 degrees, the middle of the rivet is convex, the outer right-angle edge of the rivet is changed into a negative angle, the outer right-angle edge of the rivet is basically 10 degrees to 12 degrees with the horizontal plane, the axial riveting assembly force is 120kN, and the axial riveting assembly force is 120kN; fourth, sampling and checking. The process effectively increases the length of the contact line between the flanging flange and the small inner ring, and reduces the phenomenon of non-compaction.
Description
Technical Field
The invention relates to a bearing production process, in particular to a hub bearing production process.
Background
The third-generation car hub bearing is a bearing unit which directly connects a suspension and a hub through two flange end surfaces. The hub bearing unit mainly comprises two assembly modes: nut clamping type assembly and riveting assembly adopting swing rolling technology. The swing rolling technology is to apply quasi-static pressure to the periodic local contact of the rolling head and the workpiece, the workpiece is deformed and accumulated gradually, the force is small, the machining is free from cutting, strong vibration and noise are avoided, the net shape machining can be realized, and the swing rolling technology is widely applied to various industries such as automobiles, machine tools, electric appliances, light industry, hoisting machinery and the like. The hub bearing unit is assembled by shaft riveting by adopting a swinging rolling technology, and has the characteristics of saving materials, saving energy, being efficient and safe.
In the pendulum riveting assembly process of the hub bearing unit, the shape of the rivet head has obvious influence on the metal flow (filling property) of the riveted shaft end during plastic deformation, thereby having important influence on the pendulum grinding riveting assembly quality. In the case where the inclination of the rivet has been selected, an unreasonable rivet shape may result in the compaction of the riveted workpiece or the interference of the rivet with the riveted workpiece, thereby reducing the rivet life. If the included angle between the outer straight edge of the rivet head and the horizontal line is too large (positive value), the radial fluidity of the riveted workpiece is too large, the axial fluidity is insufficient, the length of the contact line between the flanging flange and the small inner ring is affected, and even the phenomenon of compaction is caused when serious.
Disclosure of Invention
The invention aims to provide a hub bearing production process which can effectively increase the contact line length of a flanging flange and a small inner ring and reduce the phenomenon of non-compaction.
The technical aim of the invention is realized by the following technical scheme:
the hub bearing production process includes the following steps:
firstly, assembling a hub bearing;
secondly, placing the assembled hub bearing on a clamp for clamping;
thirdly, riveting and rotating the hub bearing through a rotary rivet, wherein the inclination angle of the rivet is 5.5 degrees, the middle of the rivet is convex, the outer right-angle side of the rivet is changed into a negative angle, the outer right-angle side of the rivet is basically 10 degrees to 12 degrees with the horizontal plane, the axial riveting assembly force is 120kN, and the axial riveting assembly force is 120kN;
fourth, sampling and checking.
By adopting the technical scheme, the inclination angle of the rivet head of the traditional shaft riveting machine is 3 degrees, obvious shrinkage cavity phenomenon exists, the control is difficult, when the inclination angle of the rivet head is smaller than 5.5 degrees, the aperture variation ranges of inner holes at different axial positions of the riveted shaft end are different, the inner holes close to the shaft end are reduced, and the inner holes close to the root part are enlarged; when the inclination angle of the rivet head is larger than 5.5 degrees, the aperture of the inner hole of the riveted shaft end is continuously increased along with the increase of the inclination angle of the rivet head; in addition, the variation range of the shrinkage cavity size is increased and then reduced along with the increase of the inclination angle of the rivet head. The final test results show that the optimal rivet inclination angle is about 5.5 degrees, and the variation range of the shrinkage dimension is close to 0.
Preferably, the radius of the transitional circular arc of the rivet head is R2.5mm.
By adopting the technical scheme, the shape of the rivet head changes the outer straight edge into a negative angle, and the radius of the transitional circular arc is more than R2.5mm, so that the height of the flange of the riveted shaft end is reduced, and the plastic hinge is prevented. The radius of the chamfer arc of the small inner ring is reduced so as to improve the axial clamping force, and the inner hole of the flange shaft is rounded so as to better protect the rivet head and prolong the service life of the rivet head.
Preferably, the hub bearing comprises a flange, an outer ring is sleeved outside the flange, balls are arranged between the outer ring and the flange, and the hub bearing is characterized in that a round table is arranged on the flange, an annular groove is formed between the round table and the flange, a boss is arranged on the inner wall of the outer ring, one side of the boss extends out of the outer ring and is clamped into the annular groove, the other side of the boss is positioned inside the outer ring, the two sides of the boss are provided with placing grooves, the balls are positioned in the placing grooves, and an inner ring is arranged between the side of the boss positioned in the outer ring and the flange.
By adopting the technical scheme, the bearing direction of the ball at the A, C position is changed by clamping the boss into the annular groove in the round table, and the flange plate is subjected to the action of external load and moment transmitted from the outside. The external load gives A, C the ball an ascending force, and the ball of department C and ring flange and outer lane are complete contact this moment, and the ball of department C has an ascending trend, and the special structure of outer lane just plays the effect of a lever this moment, and the ball of department C receives ascending force, and this structure makes the ball of department D receive a decurrent effect, and the ball of department D can produce a reverse force after the pressure to give the ball of department C again a decurrent force, make the ball atress of department C reduce, so, can make the ball atress condition of department C, D obtain a certain degree improvement. In the same way, the moment can make the load of the ball at A, D become larger, the moment acts on the ball at A to make the ball at A receive a downward force, and the upward force generated by external load counteracts a part of the force, so that the stress of the ball at A is improved, and the stress condition of the ball at A, B is improved due to the structure of the outer ring similar to a lever. The hub bearing with the improved structure can coordinate stress of the balls at all positions, so that the situation that local balls are stressed too much is improved.
Preferably, a chamfer is arranged on the inner ring of the riveted shaft end of the flange plate.
Drawings
FIG. 1 is a perspective view of one embodiment of the invention;
FIG. 2 is a side cross-sectional view of the inventive rivet;
FIG. 3 is a cross-sectional view of an inventive bearing structure;
fig. 4 is a side cross-sectional view of a prior art bearing.
Reference numerals: 1. a flange plate; 2. an outer ring; 3. a ball; 4. round bench; 5. a boss; 6. a placement groove; 7. an inner ring; 8. and (5) riveting.
Detailed Description
The following description is only of the preferred embodiments of the present invention, and the scope of the present invention should not be limited to the examples, but should be construed as falling within the scope of the present invention. It should also be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention are intended to be comprehended within the scope of the present invention.
As shown in fig. 1 to 4, a hub bearing production process includes a rivet 8, and is characterized in that the process steps are as follows:
firstly, assembling a hub bearing;
secondly, placing the assembled hub bearing on a clamp for clamping;
thirdly, riveting and rotating the hub bearing through rotating the rivet head 8, wherein the inclination angle of the rivet head 8 is 5.5 degrees, the middle of the rivet head 8 is convex, the outer right-angle edge of the rivet head 8 is changed into a negative angle, the outer right-angle edge is basically 10 degrees to 12 degrees with the horizontal plane, the axial riveting assembly force is 120kN, the inclination angle of the rivet head 8 of the traditional shaft riveting machine is 3 degrees, obvious shrinkage cavity phenomenon exists, the control is difficult, when the inclination angle of the rivet head 8 is smaller than 5.5 degrees, the aperture variation ranges of inner holes at different axial positions of the riveted shaft end are different, the inner hole outlet close to the shaft end is reduced, and the inner hole outlet close to the root part is enlarged; when the inclination angle of the rivet head 8 is larger than 5.5 degrees, the bore diameter of the riveted shaft end is continuously increased along with the increase of the inclination angle of the rivet head 8; in addition, the variation range of the shrinkage cavity size increases and then decreases with the inclination angle of the rivet head 8. The final test result shows that the optimal inclination angle of the rivet head 8 is about 5.5 degrees, the variation range of the shrinkage cavity size is close to 0, the transition circular arc radius of the rivet head 8 is R2.5mm, the shape of the rivet head 8 changes the outer straight edge into a negative angle, the transition circular arc radius is R2.5mm or more, and the height of the flange of the riveted shaft end is reduced so as to prevent plastic hinge. The chamfer arc radius of the small inner ring 7 is reduced so as to improve axial clamping force, and the inner hole of the flange shaft is rounded so as to better protect the rivet head 8 and prolong the service life of the rivet head 8;
fourth, sampling and checking.
The hub bearing comprises a flange plate 1, the radius of the inner ring 7 of the riveted shaft end of the flange plate 1 to an arc is 2.5mm, an outer ring 2 is sleeved outside the flange plate 1, balls 3 are arranged between the outer ring 2 and the flange plate 1, a round table 4 is arranged on the flange plate 1, an annular groove is formed between the round table 4 and the flange plate 1, a boss 5 is arranged on the inner wall of the outer ring 2, one side of the boss 5 extends out of the outer ring 2 and is clamped into the annular groove, the other side of the boss is positioned inside the outer ring 2, the two sides of the boss are provided with placing grooves 6, the balls 3 are positioned in the placing grooves 6, an inner ring 7 is arranged between the side of the boss 5 positioned in the outer ring 2 and the flange plate 1, the stress direction of the balls 3 at the A, C position is changed, and the flange plate 1 is subjected to external load and moment transmitted from outside. The external load gives A, C an upward force to the balls 3, at this time, the balls 3 at the position C are in complete contact with the flange plate 1 and the outer ring 2, the balls 3 at the position C have an upward trend, the special structure of the outer ring 2 plays a role in leverage at this time, the balls 3 at the position C are subjected to an upward force, the structure enables the balls 3 at the position D to be subjected to a downward force, the balls 3 at the position D generate a reverse force after being pressed, and accordingly the balls 3 at the position C are subjected to a downward force, so that the stress of the balls 3 at the position C is reduced, and the stress situation of the balls 3 at the position C, D is improved to a certain extent. In the same way, the moment can make the load of the ball 3 at A, D become larger, the ball 3 at A is subjected to a downward force by the action of the moment on the ball 3 at A, and a part of the upward force generated by external load is offset by the downward force, so that the stress of the ball 3 at A is improved, and the stress condition of the ball 3 at A, B is improved by the lever-like structure of the outer ring 2. The hub bearing with the improved structure can coordinate the stress of the balls 3 everywhere, thereby improving the condition of overlarge stress of the local balls 3.
Claims (2)
1. The hub bearing production process comprises a rivet head (8), and is characterized by comprising the following steps:
firstly, assembling a hub bearing;
secondly, placing the assembled hub bearing on a clamp for clamping;
thirdly, riveting and rotating the hub bearing through a rotary rivet head (8), wherein the inclination angle of the rivet head (8) is 5.5 degrees, the middle of the rivet head (8) is convex, the outer right-angle edge of the rivet head (8) is changed into a negative angle, the angle is basically 10 degrees to 12 degrees with the horizontal plane, and the axial riveting assembly force is 120kN;
fourth, sampling and checking;
the radius of the transitional circular arc of the rivet head (8) is R2.5mm;
the hub bearing comprises a flange plate (1), an outer ring (2) is sleeved outside the flange plate (1), balls (3) are arranged between the outer ring (2) and the flange plate (1), a round table (4) is arranged on the flange plate (1), an annular groove is formed between the round table (4) and the flange plate (1), a boss (5) is arranged on the inner wall of the outer ring (2), one side of the boss (5) extends out of the outer ring (2) and is clamped into the annular groove, the other side of the boss is positioned inside the outer ring (2), placing grooves (6) are formed in two sides of the boss, the balls (3) are positioned in the placing grooves (6), and an inner ring (7) is arranged between the side, which is positioned in the outer ring (2), of the boss (5) and the flange plate (1).
2. A hub bearing production process according to claim 1, characterized in that the inner ring (7) of the riveted shaft end of the flange (1) is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297547.9A CN114001098B (en) | 2021-11-04 | 2021-11-04 | Hub bearing production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297547.9A CN114001098B (en) | 2021-11-04 | 2021-11-04 | Hub bearing production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114001098A CN114001098A (en) | 2022-02-01 |
| CN114001098B true CN114001098B (en) | 2023-12-08 |
Family
ID=79927094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111297547.9A Active CN114001098B (en) | 2021-11-04 | 2021-11-04 | Hub bearing production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114001098B (en) |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JP2002161924A (en) * | 2000-11-27 | 2002-06-07 | Koyo Seiko Co Ltd | Bearing device for axle shaft |
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| CN114001098A (en) | 2022-02-01 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A production process for wheel hub bearings Granted publication date: 20231208 Pledgee: Hua Xia Bank Co.,Ltd. Shaoxing Shengzhou Sub branch Pledgor: Zhejiang Lingtian Technology Co.,Ltd. Registration number: Y2024980003654 |