CN1013744B - Precision roil-forming technology of bearing race - Google Patents
Precision roil-forming technology of bearing raceInfo
- Publication number
- CN1013744B CN1013744B CN 85108822 CN85108822A CN1013744B CN 1013744 B CN1013744 B CN 1013744B CN 85108822 CN85108822 CN 85108822 CN 85108822 A CN85108822 A CN 85108822A CN 1013744 B CN1013744 B CN 1013744B
- Authority
- CN
- China
- Prior art keywords
- rolling
- present
- bearing
- technology
- roll milling
- 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.)
- Expired
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- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to a precise roll-forming technology of a bearing race, which belongs to the processing manufacture of a mechanical element-a bearing. On the basis of the traditional technology, procedures of precision rolling and diameter trimming are added in the present invention. A free-floating type structure is used in a rolling roller for the precise rolling; the forged pieces of the bearing race processed by the technology can be directly ground, except for chamfering and deburring need a small amount of turning; in addition, a spheroidizing annealing procedure is canceled. The procedure is suitable for production and manufacture of all middle-size and small-size radial bearing races. The present invention can be implemented on general press machines and reamers under the condition of electric induction for heating. The adoption of the technology can save a great amount of steel and electrical energy, reduce mechanical work time, improve the internal structure and the performance of bearings and enhance service life, and the present invention has obvious economic benefit.
Description
The present invention relates to the manufacturing of mechanical component-bearing, be used for, the manufacture process of middle-size and small-size radial bearing lasso.
The technological process of producing bearing ring in the prior art is generally: the accurate reaming of blanking-heating-base-ring rolling machine-press machine shaping.See Zhang Zhi's literary composition volume " Forging Technology " P
342-P
343, China Machine Press.The shortcoming of existing production bearing ring is in the accurate reaming operation of ring rolling machine, the temperature height, and power consumption is big, and stock utilization is low.Because adopt traditional ring rolling machine, the precision of reaming is restricted.
The objective of the invention is to propose a kind of roll milling forming method of new bearing ring and design a kind of rolling enlarging device that is used for this method, improving the material rate, saving power with improve the quality of products.
Main points of the present invention are that the roll milling forming of bearing ring is undertaken by following operation: smart rolling-phosphatization of temperature or saponification are handled-are put in order directly in blanking-heating-shaping-first rolling-600-750 ℃.The smart Roller compaction device that adopts floating structure of rolling over of temperature wherein, at room temperature carry out in whole footpath.Need carry out shape heat treatment behind the whole footpath, promptly in smart rolling of middle temperature and cold whole footpath shaping, directly quench temper under the structural state of the new deformation that forms.
For mould-forming method of the present invention is implemented, design a kind of smart Roller compaction device of rolling over of temperature that is used for, the calendering roller of this device adopts floating structure, floating structure is by roll milling wheel 1, core sleeve 2, key 3, mandrel 4, packing ring 5 and nut 6 formed, and wherein core sleeve 2 is contained on the mandrel 4, and can side-to-side movement on mandrel 4, the inclined-plane of 3-30 degree is processed into 2 both sides in core sleeve, lead by this inclined-plane during work, and nationality helps moving axially of core sleeve, the relative position of assurance core sleeve and roll milling wheel.
Adopt the present invention to have following advantage:
Since middle temperature smart roll over to have improved to roll over expand precision, the bearing ring forging is except that chamfer site and eliminate overlap and need a small amount of turning, other position can directly be carried out buffing and hard grind and be processed, and has improved stock utilization.
2. after the smart rolling of temperature, reduce heating-up temperature in adopting, reduced power consumption, saved the energy.
3. adopt to float or roll over enlarging device, improved to roll over and expanded precision, thus reduce reject rate and and the turning amount of finish, simplify working process, save time.
4. improve bearing interior tissue and performance, improve working life.
Accompanying drawing 1 is the calendering roller of " floating type " structure of being adopted when essence is rolled over of the present invention;
Accompanying drawing 2 is parts drawings of 306 bearing outsides;
Accompanying drawing 3 is forging drawings of 306 bearing outsides of accurate roll milling forming.
Part name: 306 bearing outsides.Material: GC
r15
Accessory size sees that accompanying drawing 2 parts heavily are 0.163Kg
Embodiment: part name: 306 bearing outsides.Material: GC
r15 accessory sizes are seen
Accompanying drawing 2 parts heavily are 0.163Kg
Manufacturing process is: other part of blanking (material heavy 0.230Kg) → 1100 ℃ heating → shapings (jumping-up, counter squeeze, cut at the end) → rollings → essence rolling → deflashing just → phosphatization, saponification → the put in order interior acute angle of footpath → buffing (end face, external diameter, raceway groove) → car → demagnetization, cleaning → heat treatment → hard grind (end face, external diameter, raceway groove) → write → finished product.
Forging ' s block dimension behind the whole footpath is seen Fig. 3
Stock utilization is 68%
Grain size after the heat treatment is 11～12 grades, and the carbide granularity reaches 0.25 micron.
Be 150 hours the mathematic(al) expectation of the general bearing of 306 types, turned round 2063 hours under the condition of JH-20 in that 6000 rev/mins of ZS-30/60 testing machines, radial load 585Kg, test speed are lubricated through 306 bearings of accurate roll milling forming, ten cover test bearings are still very intact all.
Calculate by 1,000,000 covers, 306 bearing rings, can save 155 tons of Bearing Steels, count 27.9 ten thousand yuan; Saving power 690,000 degree are counted 7.6 ten thousand yuan; Save 5.1 ten thousand yuan of processing charges; Three amount to 40.6 ten thousand yuan.
Claims (3)
1, a kind of roll milling forming method of bearing ring.Its technological process is: the accurate reaming of 1100 ℃-base of blanking-be heated to-ring rolling machine-press machine shaping, the inventive method is characterised in that accurate reaming is to roll over smart rolling of back temperature in 600-750 ℃ is carried out just, adopt the Roller compaction device of floating structure during smart the rolling, be shaped as phosphatization, the whole footpath of carrying out after the saponification.
2, the described bearing ring roll milling forming method of claim 1 is characterized in that described whole footpath at room temperature carries out.
3, a kind of smart Roller compaction device of rolling over of temperature that is used for the bearing ring roll milling forming method, the calendering roller that it is characterized in that this Roller compaction device adopts floating structure, floating structure is made up of roll milling wheel (1), core sleeve (2), key (3), mandrel (4), packing ring (5) and nut (6), wherein core sleeve (2) is contained on the mandrel (4), and can go up side-to-side movement at mandrel (4), the inclined-plane of 3-30 degree is processed into both sides in core sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108822 CN1013744B (en) | 1985-12-04 | 1985-12-04 | Precision roil-forming technology of bearing race |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108822 CN1013744B (en) | 1985-12-04 | 1985-12-04 | Precision roil-forming technology of bearing race |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85108822A CN85108822A (en) | 1987-06-10 |
| CN1013744B true CN1013744B (en) | 1991-09-04 |
Family
ID=4796155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85108822 Expired CN1013744B (en) | 1985-12-04 | 1985-12-04 | Precision roil-forming technology of bearing race |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013744B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396433C (en) * | 2005-07-22 | 2008-06-25 | 武汉理工大学 | Grooved ball section annular-piece cold-ring-rolling shaping method |
| CN101417379B (en) * | 2007-10-27 | 2010-07-21 | 襄阳汽车轴承股份有限公司 | Tapered roller bearing ring double extension-sleeve forging technique |
| CN101653814B (en) * | 2008-08-22 | 2011-11-23 | 襄樊市襄城新兴轴承锻造厂 | Double-expansion process of super-large-inside-diameter forgeable pieces |
| CN101576125B (en) * | 2009-04-03 | 2010-10-13 | 浙江明星轴承有限公司 | Method for manufacturing outer ring of tapered roller bearing |
| CN102009113A (en) * | 2010-11-23 | 2011-04-13 | 瓦房店光阳轴承集团有限公司 | Novel bearing ring rolling and reaming tool |
| ITTO20130145A1 (en) * | 2013-02-21 | 2014-08-22 | Skf Ab | COLD SPRAYING PROCEDURE FOR BEARING RING FORMING |
| CN104138906A (en) * | 2014-06-30 | 2014-11-12 | 贵州安大航空锻造有限责任公司 | Main roller for producing special-shaped ring forging piece of bearing inner ring of wind power generating unit |
| JP6758913B2 (en) * | 2016-05-23 | 2020-09-23 | Ntn株式会社 | Orbital ring manufacturing method |
| CN108673072A (en) * | 2018-08-01 | 2018-10-19 | 重庆通用工业(集团)有限责任公司 | Face-hardened large thin-wall stainless steel axle sleeve manufacturing process |
| CN109454412A (en) * | 2018-12-28 | 2019-03-12 | 同共(湖北)精密成形有限公司 | A kind of processing method of bearing race |
-
1985
- 1985-12-04 CN CN 85108822 patent/CN1013744B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85108822A (en) | 1987-06-10 |
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