CN109454412A - A kind of processing method of bearing race - Google Patents
A kind of processing method of bearing race Download PDFInfo
- Publication number
- CN109454412A CN109454412A CN201811620583.2A CN201811620583A CN109454412A CN 109454412 A CN109454412 A CN 109454412A CN 201811620583 A CN201811620583 A CN 201811620583A CN 109454412 A CN109454412 A CN 109454412A
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- China
- Prior art keywords
- annulus
- bearing race
- upper mold
- cold drawn
- processing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The present invention relates to a kind of processing methods of bearing race, method includes the following steps: S1, defines blank volume；Tubing is cut and is carried out rough turn by S2；S3 is heat-treated；S4, phosphatization saponification process；S5 is lubricated processing to blank；S6 carries out cold drawn section processing to blank；S7 goes deburring；S8, fine grinding.The processing method of bearing race of the invention carries out cold drawn section forming at normal temperature, has saved cost, and improves the mechanical performance, surface smoothness and dimensional accuracy of bearing race.
Description
Technical field
The present invention relates to bearing race fields, and in particular to a kind of processing method of bearing race.
Background technique
Rotary roll processes aspect for annular bearing material forming, and state's inner bearing generally uses hot forging forming, and metal holds
Oxidizable, product machining allowance is big, and stock utilization is low, at high cost.Product is poor by metallographic structure after hot forging, material density
It is bad, the disadvantages of metal streamline is discontinuous, there is hidden danger to product quality.Man-hour requirement is added to carry out descale to mold and workpiece
Processing, otherwise workpiece causes scaling loss and accelerates mold loss, reduces surface smoothness and dimensional accuracy that pendulum rolles over part, oxide skin makes
The carbon alloy content of steel surface layer is reduced, and reduces the surface property of steel.
Summary of the invention
The present invention provides a kind of processing method of bearing race, to solve the problems mentioned in the above background technology.
The technical solution adopted in the present invention is as follows:
A kind of processing method of bearing race, comprising the following steps:
S1, blank volume is defined；
S2, tubing is cut to obtain blank defined in step S1, roughing is cut in driving of going forward side by side, and obtains annulus；
S3, the obtained annulus of step S2 is heat-treated；
S4, by step S3, treated that annulus makees phosphatization-saponification process；
S5, to step S4, treated that annulus is lubricated processing；
S6, cold drawn section processing is carried out to step S5 treated annulus, the annulus is put into cold drawn section lower mould type
In chamber, upper mold central axis being rolled over using pendulum and is revolved around drag chamber inclined, while put and rolling over upper mold rotation, pendulum rolles over upper mold lower end
It is contacted with annulus, annulus squeeze until Deformed ring is full of mold cavity；
S7, punching press is carried out to the drip molding that step S6 is obtained, goes deburring；
S8, the obtained drip molding of step S7 is refined, obtains bearing race.
Through the above technical solutions, the obtained bearing race of cold drawn section by metal flow rear surface finish preferably, high cause
Density, the bearing inner and outer rings for possessing raceway construction.
Preferably, heat treatment described in step S3 is isothermal spheroidizing, and temperature is 780 DEG C -810 DEG C.
Through the above technical solutions, comparing with common spheroidizing, isothermal spheroidizing not only can shorten the period, Er Qieke
Keep spherodized structure uniform, and can strictly control the hardness after annealing.
Preferably, lubricated includes that grinding and surface smearing molybdenum disulphide powder are carried out to annulus in the step S5.
Through the above technical solutions, grinding and adding molybdenum disulphide powder that can carry out simultaneously, it can also first grind and smear two afterwards
Vulcanize molybdenum powder, molybdenum disulphide powder can be made preferably to be attached in the microcellular structure of ring textures by grinding in this way, lubricant effect
More preferably, so that the annulus of processing, which rolles over mould with pendulum, contacts suffered pressure more evenly.
Preferably, step S6 cold drawn section mold uses high carbon and chromium High wear-resistant steel LD, to the GCr15 blank with hardenability
Carry out pendulum rolling.
Through the above technical solutions, cold drawn section mold has high intensity, flow harden is realized to blank hardenability, so that plus
Workpiece has better mechanical performance.
Preferably, pendulum described in step S6 rolles over the cylindrical body that upper mold lower end is edge bevelling, the fillet surface of upper mold lower end
It is contacted with bearing race, and upper mold ceaselessly carries out rotation around upper mold central axis.
Through the above technical solutions, pendulum roll over upper mold contacted with annulus for line, processing method be line process, and put roll over upper mold and
The position of annulus contact is not stop variation, and this processing method can make the contact pressure of workpiece material surface low, Ke Yiti
Height pendulum rolles over the surface smoothness of part and the surface property of dimensional accuracy and steel.
Preferably, the temperature that cold drawn section is processed in step S6 is 10~30 DEG C.
Through the above technical solutions, the temperature of cold drawn section processing is room temperature, energy saving is pollution-free, can make in bearing,
The bearing race that outer ring processing saves descale step to improve production efficiency, while process under room temperature has preferably fine and close
Degree, improves mechanical performance.
A kind of cold drawn section mold for bearing race processing, including upper die and lower die, the type chamber of the lower die are conical ring
Slot, and the conical ring trench bottom is additionally provided with close to the side of outer ring to the second recessed annular groove.
Through the above technical solutions, pendulum rolling lower die structure is simple, workpiece is pressed into annular type chamber using upper mold, is made
The shape that molded part directly has bearing race is obtained, eliminates the machining of some bearing inner and outer rings, the bearing race of acquisition is strong
Degree is more preferable.
Preferably, the lower end of the upper mold is cylindrical body, and the cylindrical body lower edge is provided with the chamfering conical surface.
Through the above technical solutions, the chamfering conical surface can be made to contact with annulus blank when upper mold inclination, forms line and connect
Touching, thus to being pushed on annulus blank, so that blank deformation.
Technical solution of the present invention, compared with prior art, generated to have the beneficial effect that:
The surface on the surface of material and mold is taken line to connect by the processing method of bearing race of the invention by rotary roll
The mode of touching is processed, and this processing method can make the contact pressure of workpiece material surface low, and bearing race can be improved
The surface property of surface smoothness and dimensional accuracy and steel.Process before blank be select common circular pipe, cold drawn section at
Shape processing passes through preferable metal flow rear surface finish, high-compactness, the bearing inner and outer rings for possessing raceway construction.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is a kind of flow chart of the processing method of bearing race of the invention；
Fig. 2 is the structural schematic diagram before a kind of processing of cold drawn section mold for bearing race processing of the invention；
Fig. 3 is the structural schematic diagram after a kind of processing of cold drawn section mold for bearing race processing of the invention；
In attached drawing 1, Fig. 2 and Fig. 3, the representative structure list of each label is as follows:
1, upper mold, 11, the chamfering conical surface, 2, lower die, 21, conical ring slot, the 22, second annular groove, 3, annulus blank, 4, bearing
Circle.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As shown in Figure 1, the processing method of bearing race of the invention, comprising the following steps:
S1, blank volume is defined, drawing is drawn in computer, it is that simulation analysis is simulated as a result, to obtain blank volume；
S2, tubing is placed on and is cut to obtain blank defined in step S1 on sawing machine GZ4232, then incited somebody to action
To annulus be put on lathe, the burr of annulus is fallen with turning insert light；
S3, the obtained annulus of step S2 is put into vacuum well type annealing furnace, GCr15 is carried out according to standard in heating furnace
Isothermal spheroidizing, heating temperature is 780~810 DEG C, to obtain metallographic structure；
S4, by step S3, treated that annulus is put into phosphatization-saponification pond, and ring textures react the phosphate for grey occur
Envelope, phosphate coating have plasticity, can deform together with annulus steel；
S5, molybdenum disulphide powder is smeared to step S4 treated annulus is lubricated processing, including grinding and surface, glues mill
With add molybdenum disulphide powder that can carry out simultaneously, can also first grind and smear molybdenum disulphide powder afterwards.
S6, cold drawn section processing is carried out to step S5 treated annulus, the annulus is put into cold drawn section lower mould type
It utilizes pendulum to roll over upper mold central axis in chamber, under room temperature to revolve around drag chamber inclined, while putting and rolling over upper mold rotation, put on rolling over
Mould lower end is contacted with annulus, is carried out pendulum to annulus and is rolled over until Deformed ring is full of mold cavity；
S7, it the obtained drip molding of step S6 is put into punching machine carries out punching press, go deburring；
S8, the obtained drip molding of step S7 is put on grinding machine and is refined, grind off the remaining burr of overlap, obtained final
Bearing race.
Specifically, cold drawn section mold uses high carbon and chromium High wear-resistant steel LD in step S6, there is mold preferably strong
Degree, carries out pendulum rolling to blank hardenability GCr15, so that bearing race has better mechanical performance.And cold drawn section is carried out under room temperature,
Room temperature generally refers to 10~30 DEG C.
Further, the cold drawn section mold used in above step S6 is as shown in Figures 2 and 3, including upper mold 1 is under
Mould 2,1 lower end of upper mold is cylindrical body, and there is a circle chamfering conical surface 11 at cylinder bottom edge, is equipped with a mold cavity in lower die 2,
Type chamber is conical ring slot 21, and the bottom of conical ring slot 21 is provided with dented deeper second annular groove 22 by the side of outer ring.
In use, annulus blank 3 is put on 21 top surface of conical ring slot, upper mold 1 is adjusted, so that the central axis of upper mold 1 and perpendicular
For histogram to being in the angle γ, the angle γ is generally 1 degree or so, and the chamfering conical surface 11 of upper mold 1 is close to the top of annulus blank 3, upper mold 1 around
The central axis rotation of lower die 2, while in advance rotation process, upper mold 1 is around the central axis rotation of itself, and such upper mold 1 is every time
The face contacted with annulus blank 3 all varies, and the central axis that pendulum rolles over upper mold revolves around lower die inclined to be possessed
Precession be formed by circular trace and lower die by the upward work of blank into straight path collective effect make blank metal flowing be full of
Lower die returns to origin after type chamber obtains workpiece, and mandril pushes up upwards takes out workpiece, and after cold drawn section, what is obtained is as shown in Figure 3
Bearing race 4, bearing race 4 be full of entire conical ring slot 21, possess bearing inner and outer rings structure.Rotary roll is by the surface of material
The mode for taking line to contact with the surface of mold is processed, and this processing method can make the contact pressure of workpiece material surface
It is low, pendulum can be improved and roll over the surface smoothness of part and the surface property of dimensional accuracy and steel.
Although oneself is through the embodiment of the present invention has shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (8)
1. a kind of processing method of bearing race, which comprises the following steps:
S1, blank volume is defined；
S2, tubing is cut to obtain blank defined in step S1, roughing is cut in driving of going forward side by side, and obtains annulus；
S3, the obtained annulus of step S2 is heat-treated；
S4, by step S3, treated that annulus makees phosphatization-saponification process；
S5, to step S4, treated that annulus is lubricated processing；
S6, cold drawn section processing is carried out to step S5 treated annulus, the annulus is put into cold drawn section lower mould type chamber,
Using pendulum roll over upper mold central axis around drag chamber inclined revolve, while put roll over upper mold rotation, and put roll over upper mold lower end with
Annulus contact squeeze to annulus until Deformed ring is full of mold cavity；
S7, punching press is carried out to the drip molding that step S6 is obtained, goes deburring；
S8, the obtained drip molding of step S7 is refined, obtains bearing race.
2. the processing method of bearing race according to claim 1, it is characterised in that: heat treatment described in step S3 is isothermal
Spheroidizing, temperature are 780 DEG C -810 DEG C.
3. the processing method of bearing race according to claim 1, it is characterised in that: lubricated includes in the step S5
Grinding is carried out to annulus and molybdenum disulphide powder is smeared on surface.
4. the processing method of bearing race according to claim 1, it is characterised in that: step S6 cold drawn section mold uses high-carbon
High chromium High wear-resistant steel LD carries out pendulum rolling to the GCr15 blank with hardenability.
5. the processing method of bearing race according to claim 1, it is characterised in that: pendulum described in step S6 rolles over upper mold lower end
Fillet surface for the cylindrical body of edge bevelling, upper mold lower end is contacted with annulus, and upper mold carries out rotation around upper mold central axis.
6. the processing method of bearing race according to claim 1, it is characterised in that: the temperature that cold drawn section is processed in step S6
It is 10~30 DEG C.
7. a kind of cold drawn section mold for bearing race processing, it is characterised in that: including upper mold (1) and lower die (2), the lower die
Type chamber be conical ring slot (21), and conical ring slot (21) bottom is additionally provided with close to the side of outer ring to recessed second
Annular groove (22).
8. the cold drawn section mold according to claim 7 for bearing race processing, it is characterised in that: the upper mold (1)
Lower end is cylindrical body, and the cylindrical body lower edge is provided with the chamfering conical surface (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620583.2A CN109454412A (en) | 2018-12-28 | 2018-12-28 | A kind of processing method of bearing race |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620583.2A CN109454412A (en) | 2018-12-28 | 2018-12-28 | A kind of processing method of bearing race |
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| Publication Number | Publication Date |
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| CN109454412A true CN109454412A (en) | 2019-03-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811620583.2A Pending CN109454412A (en) | 2018-12-28 | 2018-12-28 | A kind of processing method of bearing race |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421300A (en) * | 2019-11-07 | 2020-07-17 | 襄阳汽车轴承股份有限公司 | Narrow series thin-wall conical bearing inner ring or outer ring blank forming and turning process |
Citations (8)
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|---|---|---|---|---|
| CN85108822A (en) * | 1985-12-04 | 1987-06-10 | 哈尔滨工业大学 | Precision roil-forming technology of bearing race |
| CN2080005U (en) * | 1990-09-07 | 1991-07-03 | 张晓林 | Swing mill |
| JPH07108340A (en) * | 1993-10-13 | 1995-04-25 | Sumitomo Metal Ind Ltd | Manufacture of coarse shape material for rolling bearing race |
| TW254870B (en) * | 1994-03-16 | 1995-08-21 | Retsu Engineering Co Ltd | Rotation forging device |
| CN2412679Y (en) * | 2000-03-09 | 2001-01-03 | 武汉汽车工业大学 | Conical roller roll |
| CN1851281A (en) * | 2006-05-25 | 2006-10-25 | 杭州友谐冷精锻技术有限公司 | Cold fine forging process for automobile bearing innerand outer ring, and its forging die |
| CN105537863A (en) * | 2015-12-02 | 2016-05-04 | 四川民盛特钢锻造有限公司 | Forging method of inner and outer rings of variable speed bearing of fan |
| JP6332572B1 (en) * | 2016-07-12 | 2018-05-30 | 日本精工株式会社 | Swing forging device inspection device, inspection tool, inspection method, bearing unit manufacturing device, bearing unit, and automobile manufacturing method |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108822A (en) * | 1985-12-04 | 1987-06-10 | 哈尔滨工业大学 | Precision roil-forming technology of bearing race |
| CN2080005U (en) * | 1990-09-07 | 1991-07-03 | 张晓林 | Swing mill |
| JPH07108340A (en) * | 1993-10-13 | 1995-04-25 | Sumitomo Metal Ind Ltd | Manufacture of coarse shape material for rolling bearing race |
| TW254870B (en) * | 1994-03-16 | 1995-08-21 | Retsu Engineering Co Ltd | Rotation forging device |
| CN2412679Y (en) * | 2000-03-09 | 2001-01-03 | 武汉汽车工业大学 | Conical roller roll |
| CN1851281A (en) * | 2006-05-25 | 2006-10-25 | 杭州友谐冷精锻技术有限公司 | Cold fine forging process for automobile bearing innerand outer ring, and its forging die |
| CN105537863A (en) * | 2015-12-02 | 2016-05-04 | 四川民盛特钢锻造有限公司 | Forging method of inner and outer rings of variable speed bearing of fan |
| JP6332572B1 (en) * | 2016-07-12 | 2018-05-30 | 日本精工株式会社 | Swing forging device inspection device, inspection tool, inspection method, bearing unit manufacturing device, bearing unit, and automobile manufacturing method |
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| Title |
|---|
| 马亚良等: "《滚动轴承质量控制》", 31 August 2004, 中国计量出版社 * |
| 高锦张等: "《塑性成形工艺与模具设计》", 31 August 2001, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421300A (en) * | 2019-11-07 | 2020-07-17 | 襄阳汽车轴承股份有限公司 | Narrow series thin-wall conical bearing inner ring or outer ring blank forming and turning process |
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Application publication date: 20190312 |
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