CN113290197A - Holder riveting process and electric scroll compressor bearing - Google Patents
Holder riveting process and electric scroll compressor bearing Download PDFInfo
- Publication number
- CN113290197A CN113290197A CN202110607403.2A CN202110607403A CN113290197A CN 113290197 A CN113290197 A CN 113290197A CN 202110607403 A CN202110607403 A CN 202110607403A CN 113290197 A CN113290197 A CN 113290197A
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- China
- Prior art keywords
- rivet
- riveting
- section
- retainer
- frame body
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- 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.)
- Pending
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000587161 Gomphocarpus Species 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
-
- 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
- F16C33/38—Ball cages
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to the field of bearings, and particularly discloses a riveting process of a retainer and a bearing of an electric scroll compressor. The riveting process of the retainer at least comprises the following steps: selecting two frame bodies and a corresponding number of rivets; the frame body comprises a ball pocket part and a connecting plate, and the thickness of the connecting plate is S; the rivet sequentially comprises a rivet head, a rivet fastening section, a transition section and a guide section along the axial direction, wherein the length of the rivet fastening section is e, the diameter of the rivet fastening section is d1, the sum of the lengths of the rivet fastening section and the transition section is b, and the diameter of the guide section is d 2; e = 0.85S-1S, b =1.8 e-2 e, and d1 > d 2; the rivet sequentially penetrates through the corresponding riveting holes in the two frame bodies, the rivet fastening section is in interference fit with the riveting holes, and a gap is reserved between the guide section and the riveting holes; and pressurizing the end part of the rivet, and deforming the guide section and the transition section to fill the gap between the rivet and the riveting hole. The bearing capacity of the retainer can be effectively improved by adopting the riveting process of the retainer.
Description
Technical Field
The invention relates to the field of bearings, in particular to a riveting process of a retainer and a bearing of an electric scroll compressor.
Background
The bearing is a common part in mechanical equipment and is used for supporting the mechanical rotating body and reducing the friction coefficient in the movement process of the mechanical rotating body. The deep groove ball bearing is one of the most common bearing types and mainly comprises an inner ring, an outer ring, a retainer 3 and rolling bodies 2, wherein the retainer is formed by riveting two retainer bodies.
Because the bearing can rotate along with the mechanical rotating body when working and the borne load is complicated and changeable, each component part of the bearing can generate certain fatigue wear, even structural damage, and the working precision and the service life of the bearing are influenced.
The common failure modes of the retainer are mainly three types: separating the retainer from the rivet, breaking the retainer and shearing the rivet. The three damage forms of the retainer are shown in a schematic view as shown in fig. 1, wherein A shows a separation form of the retainer and the rivet, B shows a tensile-breaking form of the retainer, and C shows a shearing form of the rivet.
Through the analysis of the structure of the existing retainer and the research of the damage form of the retainer, the inventor finds that after the riveting of the existing retainer is completed, larger gaps exist between the rivet and the riveting holes and between the binding surfaces of the two retainers, namely, as shown in the state of fig. 2, the state can be clearly shown on the figure, a certain gap exists between the rivet and the riveting holes, and a certain gap also exists between the connecting plates of the two retainers. This causes a small amount of relative movement between the two cage bodies in the axial and circumferential directions during operation, which causes additional impact loads on the rivets and the cage, which impairs the load-bearing capacity of the cage to some extent, and is also an important factor in the early failure of the bearing cage.
Disclosure of Invention
The invention aims to provide a riveting process of a retainer and a bearing of an electric scroll compressor, and improve the bearing capacity of the retainer.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a riveting process for a retainer at least comprises the following steps:
step one, selecting two frame bodies and a corresponding number of rivets;
the frame body comprises a ball pocket part and a connecting plate, a riveting hole is preset in the connecting plate, and the thickness of the connecting plate is S;
the rivet sequentially comprises a rivet head, a rivet fastening section, a transition section and a guide section along the axial direction, wherein the length of the rivet fastening section is e, the diameter of the rivet fastening section is d1, the sum of the lengths of the rivet fastening section and the transition section is b, and the diameter of the guide section is d 2; e = 0.85S-1S, b =1.8 e-2 e, and d1 > d 2;
the rivet sequentially penetrates through the corresponding riveting holes in the two frame bodies until the rivet head is contacted with the outer side face of the corresponding connecting plate, at the moment, the rivet fastening section is in interference fit with the riveting holes, and a gap is reserved between the guide section and the riveting holes;
and step three, pressurizing the end part of the rivet, deforming the guide section and the transition section, and filling a gap between the rivet and the riveting hole to finish riveting.
By adopting the riveting process, the gap between the rivet and the riveting hole after the riveting is finished can be effectively eliminated, the bearing area can be increased to a certain degree, the circumferential movement of the two frame bodies relative to the rivet can be reduced or even eliminated, the generation of large impact load between the frame bodies and the rivet is avoided, the bearing capacity of the rivet is improved, the circumferential bearing capacity of the rivet can be well improved, and the probability of rivet shearing in the early failure of the retainer is reduced.
Preferably, the two frame bodies are a front frame body and a rear frame body in sequence, and the rivets are inserted into the riveting holes of the front frame body and the rear frame body in sequence; in the second step, the transition section part is in interference fit with the riveting hole of the rear frame body.
Preferably, the rivet is pre-pressed with the riveting holes of the front frame body and the rear frame body in sequence.
One of the main reasons for the separation of the frame bodies from the rivets in the early failure of the cage is the presence of a gap between the connecting plates of the two frame bodies, i.e. the presence of a virtual rivet. This results in the two carriers moving axially relative to the rivet under alternating axial loads and frequently being subjected to impact loads until the carriers separate from the rivet.
Therefore, in the riveting process, the two frame bodies are tightly fixed in an interference fit mode through the riveting holes and the rivets, the two frame bodies are guaranteed to be always in effective contact in the whole riveting process, the gap between the two frame bodies is reduced or even eliminated, the virtual riveting is avoided, the axial bearing capacity of the retainer is improved, and the probability of separation of the frame bodies and the rivets in the early failure of the retainer is reduced.
Preferably, the side surface of the transition section is a bevel.
Preferably, a round corner is arranged between the tacking section and the transition section, and a round corner is arranged between the transition section and the guide section, so that the stress concentration degree can be reduced.
Preferably, after the riveting in the fourth step is finished, the riveting quality is detected by taking the height of the deformed rivet as a parameter.
Through the detection to the height after the rivet warp, can judge the deformation degree of rivet, and then do indirect judgement to the clearance between rivet and the riveting hole, between two support bodies to judge riveting quality.
An electric scroll compressor bearing comprises an inner ring, an outer ring and a retainer, wherein the retainer is processed by the riveting process of the retainer.
The electric scroll compressor is a core component of an automobile air conditioning system, wherein a movable scroll of a key part needs to work under the working conditions of high bearing capacity and high rotating speed, and the movable scroll is required to bear larger alternating load. The bearing used by the movable scroll plate also needs to have the performance of stable work under the working condition of larger alternating load, and the electric scroll compressor bearing processed by adopting the holder riveting process can improve the alternating load bearing capacity of the holder and the service life and the working stability of the bearing.
Drawings
FIG. 1 is a schematic view of a common form of cage failure;
FIG. 2 is a schematic view of a conventional rivet structure for a cage;
FIG. 3 is a structural view of a rivet used in the riveting process of the cage of the present embodiment;
FIG. 4 is a schematic structural diagram of a riveting process step two of the retainer of the present embodiment;
FIG. 5 is a schematic structural view of a state of completed riveting in the riveting process of the cage of the present embodiment;
fig. 6 is a schematic view of a structure of the retainer adopting the riveting process of the retainer of the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
As shown in fig. 3 to 5, a riveting process for a cage at least comprises the following steps:
step one, two frame bodies 3 and the corresponding number of rivets 1 are selected, and the two frame bodies 3 are a front frame body and a rear frame body in sequence.
The support body 3 comprises a ball pocket portion and a connecting plate 31, a riveting hole is preset in the connecting plate 31, and the thickness of the connecting plate 31 is S.
As shown in FIG. 3, the rivet 1 comprises a rivet head 11, a clinching section 12, a transition section 13 and a guiding section 14 in sequence along the axial direction, and the side surface of the transition section 13 is a bevel. The rivet is characterized in that a round angle is arranged between the rivet section and the transition section, and a round angle is arranged between the transition section and the guide section.
Wherein the staple section 12 has a length e and a diameter d1, the sum of the lengths of the staple section 12 and the transition section 13 is b, and the diameter of the guide section 14 is d 2. As shown in fig. 3 and 4, e =0.85S to 1S, b =1.8e to 2e, and d1 > d 2.
Step two is as shown in fig. 4, the rivet 1 sequentially passes through the riveting holes of the front frame body and the rear frame body until the nail head 11 contacts with the outer side surface of the corresponding connecting plate 31, and the rivet 1 is sequentially pre-pressed with the riveting holes of the front frame body and the rear frame body. At the moment, the rivet section 12 is in interference fit with the riveting hole, the transition section 13 is in interference fit with the riveting hole of the rear frame body, and a gap is reserved between the guide section 14 and the riveting hole.
And step three, as shown in fig. 5, pressurizing the end of the rivet 1, filling and eliminating the gap between the rivet 1 and the riveting hole by the guide section 14 and the transition section 13, and completing riveting, as shown in fig. 6, which is a schematic diagram of the riveting structure of the riveted cage, and as can be clearly shown in the figure, compared with fig. 2, the gap between the rivet and the riveting hole and the gap between two connecting plates of the cage are basically eliminated.
And step four, after riveting is finished, taking the height of the deformed rivet as a parameter to perform riveting quality detection.
By adopting the riveting process, the gap between the rivet 1 and the riveting hole after the riveting is finished can be effectively eliminated, the bearing area can be increased to a certain extent, the circumferential movement of the two frame bodies 3 relative to the rivet 1 can be reduced or even eliminated, the generation of large impact load between the frame bodies 3 and the rivet 1 is avoided, the bearing capacity of the rivet 1 is improved, the circumferential bearing capacity of the rivet 1 can be well improved, and the probability of shearing the rivet 1 in the early failure of the retainer is reduced.
In addition, in the early failure of the retainer, one of the main causes of the separation of the frame body 3 from the rivet 1 is the presence of a gap between the connecting plates 31 of the two frame bodies 3, i.e., the presence of a virtual rivet. This results in that under alternating axial loads the two carriers 3 move axially relative to the rivet 1 and are subjected to frequent impact loads until the carriers 3 are separated from the rivet 1.
Therefore, in the riveting process, the two frame bodies 3 are tightly fixed in an interference fit mode with the rivet 1 through the riveting holes, so that the two frame bodies 3 are always in effective contact in the whole riveting process, the gap between the two frame bodies 3 is reduced or even eliminated, virtual riveting is avoided, the axial bearing capacity of the retainer is improved, and the probability of separation of the frame bodies 3 from the rivet 1 in early failure of the retainer is reduced.
An electric scroll compressor bearing comprises an inner ring, an outer ring and a retainer, wherein the retainer is processed by the riveting process of the retainer.
The electric scroll compressor is a core component of an automobile air conditioning system, wherein a movable scroll of a key part needs to work under the working conditions of high bearing capacity and high rotating speed, and the movable scroll is required to bear larger alternating load. The bearing used by the movable scroll plate also needs to have the performance of stable work under the working condition of larger alternating load, and the electric scroll compressor bearing processed by adopting the holder riveting process can improve the alternating load bearing capacity of the holder and the service life and the working stability of the bearing.
In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The riveting process of the retainer is characterized by at least comprising the following steps:
step one, selecting two frame bodies and a corresponding number of rivets;
the frame body comprises a ball pocket part and a connecting plate, a riveting hole is preset in the connecting plate, and the thickness of the connecting plate is S;
the rivet sequentially comprises a rivet head, a rivet fastening section, a transition section and a guide section along the axial direction, wherein the length of the rivet fastening section is e, the diameter of the rivet fastening section is d1, the sum of the lengths of the rivet fastening section and the transition section is b, and the diameter of the guide section is d 2; e = 0.85S-1S, b =1.8 e-2 e, and d1 > d 2;
the rivet sequentially penetrates through the corresponding riveting holes in the two frame bodies until the rivet head is contacted with the outer side face of the corresponding connecting plate, at the moment, the rivet fastening section is in interference fit with the riveting holes, and a gap is reserved between the guide section and the riveting holes;
and step three, pressurizing the end part of the rivet, deforming the guide section and the transition section, and filling a gap between the rivet and the riveting hole to finish riveting.
2. The cage staking process of claim 1, wherein: the two frame bodies are a front frame body and a rear frame body in sequence, and the rivets are inserted into the riveting holes of the front frame body and the rear frame body in sequence; in the second step, the transition section part is in interference fit with the riveting hole of the rear frame body.
3. The cage staking process of claim 2, wherein: the rivet is pre-pressed with the riveting holes of the front frame body and the rear frame body in sequence.
4. The cage staking process of claim 1, wherein: the side of the transition section is an inclined plane.
5. The cage staking process of claim 1, wherein: the rivet is characterized in that a round angle is arranged between the rivet section and the transition section, and a round angle is arranged between the transition section and the guide section.
6. Cage riveting process according to any of claims 1 to 5, wherein:
and step four, after riveting is finished, taking the height of the deformed rivet as a parameter to perform riveting quality detection.
7. The utility model provides an electric scroll compressor bearing, includes inner circle, outer lane and holder, its characterized in that: the retainer is formed by the riveting process of the retainer according to any one of claims 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607403.2A CN113290197A (en) | 2021-06-01 | 2021-06-01 | Holder riveting process and electric scroll compressor bearing |
| PCT/CN2021/141213 WO2022252586A1 (en) | 2021-06-01 | 2021-12-24 | Retainer riveting process and electric scroll compressor bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607403.2A CN113290197A (en) | 2021-06-01 | 2021-06-01 | Holder riveting process and electric scroll compressor bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113290197A true CN113290197A (en) | 2021-08-24 |
Family
ID=77326668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110607403.2A Pending CN113290197A (en) | 2021-06-01 | 2021-06-01 | Holder riveting process and electric scroll compressor bearing |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113290197A (en) |
| WO (1) | WO2022252586A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252586A1 (en) * | 2021-06-01 | 2022-12-08 | 八环科技集团股份有限公司 | Retainer riveting process and electric scroll compressor bearing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1185196A (en) * | 1966-04-07 | 1970-03-25 | Irwin E Rosman | Rivet type Fastener Device and Method of Riveting |
| CN2510667Y (en) * | 2001-11-15 | 2002-09-11 | 洛阳市中福轴承配件设备厂 | Low-noise bearing cage with tacking |
| EP1772088A1 (en) * | 2005-10-10 | 2007-04-11 | Seb Sa | Riveting process |
| WO2014208325A1 (en) * | 2013-06-27 | 2014-12-31 | 日本精工株式会社 | Method for manufacturing ribbon cage and ribbon cage |
| CN104358758A (en) * | 2014-11-25 | 2015-02-18 | 吴中区光福良盛机械厂 | Rivet for ribbon retainer |
| CN207229385U (en) * | 2017-08-14 | 2018-04-13 | 东莞劲威新能源科技有限公司 | A kind of electric scroll compressor for vehicles |
| CN207526689U (en) * | 2017-04-17 | 2018-06-22 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of shafting component and Horizontal electronic screw compressor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016031131A (en) * | 2014-07-30 | 2016-03-07 | 日本精工株式会社 | Wave type holder, and its manufacturing process |
| CN208870930U (en) * | 2018-09-17 | 2019-05-17 | 杭州恒力轴承有限公司 | Rivet type bearing retainer for crankshaft bearing component |
| CN113290197A (en) * | 2021-06-01 | 2021-08-24 | 八环科技集团股份有限公司 | Holder riveting process and electric scroll compressor bearing |
| CN215058930U (en) * | 2021-06-01 | 2021-12-07 | 八环科技集团股份有限公司 | Riveting structure of retainer |
-
2021
- 2021-06-01 CN CN202110607403.2A patent/CN113290197A/en active Pending
- 2021-12-24 WO PCT/CN2021/141213 patent/WO2022252586A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1185196A (en) * | 1966-04-07 | 1970-03-25 | Irwin E Rosman | Rivet type Fastener Device and Method of Riveting |
| CN2510667Y (en) * | 2001-11-15 | 2002-09-11 | 洛阳市中福轴承配件设备厂 | Low-noise bearing cage with tacking |
| EP1772088A1 (en) * | 2005-10-10 | 2007-04-11 | Seb Sa | Riveting process |
| WO2014208325A1 (en) * | 2013-06-27 | 2014-12-31 | 日本精工株式会社 | Method for manufacturing ribbon cage and ribbon cage |
| CN104358758A (en) * | 2014-11-25 | 2015-02-18 | 吴中区光福良盛机械厂 | Rivet for ribbon retainer |
| CN207526689U (en) * | 2017-04-17 | 2018-06-22 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of shafting component and Horizontal electronic screw compressor |
| CN207229385U (en) * | 2017-08-14 | 2018-04-13 | 东莞劲威新能源科技有限公司 | A kind of electric scroll compressor for vehicles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252586A1 (en) * | 2021-06-01 | 2022-12-08 | 八环科技集团股份有限公司 | Retainer riveting process and electric scroll compressor bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022252586A1 (en) | 2022-12-08 |
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Application publication date: 20210824 |