CN101576125A - Method for manufacturing outer ring of tapered roller bearing - Google Patents
Method for manufacturing outer ring of tapered roller bearing Download PDFInfo
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- CN101576125A CN101576125A CNA2009100974525A CN200910097452A CN101576125A CN 101576125 A CN101576125 A CN 101576125A CN A2009100974525 A CNA2009100974525 A CN A2009100974525A CN 200910097452 A CN200910097452 A CN 200910097452A CN 101576125 A CN101576125 A CN 101576125A
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- tapered roller
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- roller bearing
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 16
- 238000005496 tempering Methods 0.000 claims description 14
- 239000003599 detergent Substances 0.000 claims description 10
- 241001504664 Crossocheilus latius Species 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 235000019628 coolness Nutrition 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000000137 annealing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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Abstract
The invention discloses a method for manufacturing an outer ring of a tapered roller bearing, comprising the following steps of: a: taking a material: setting the quality of the finished product outer ring as M, setting the outer diameter as D, taking a bearing steel pipe with the outer diameter of D1 as the raw material, taking the bearing steel pipe with the quality of M1 and meeting the condition that one half of D is less than or equal to D1 which is less than D, and M1 is equal to 2M plus M2 plus 2M3, wherein M2 is the margin of quality by cutting, and M3 is the margin of quality of single outer ring by grinding process; b: cold rolling: rolling on the bearing steel pipe taken in the step a for obtaining a combined blank of the outer ring; c. cutting: cutting the combined blank at the connecting ring for obtaining a single blank of the two outer rings; d: thermal processing; and e: finish machining: grinding the single blank of the outer ring. The proposal leads the outer ring of the tapered roller bearing to realize the cold rolling for shaping, has the advantages of small material loss, saved energy consumption, simple process, high production efficiency and the like, and simultaneously ensures the product quality.
Description
Technical field
What the present invention relates to is a kind of manufacture method of bearing outer ring, and the manufacture method of the outer ring of a kind of tapered roller bearing of more specifically saying so belongs to field of machining.
Background technique
Tapered roller bearing is widely used in industries such as automobile, milling train, mine, metallurgy, plastics machinery.Tapered roller bearing has conical inner ring and outer ring raceway, and tapered roller is arranged between the two.The projection line of all conical surfaces is all met in the same point of bearing axis.This design makes tapered roller bearing be particularly suitable for bearing compound (radially with axial) load.The axial load ability major part of bearing is determined by wrapping angle α; The α angle is big more, and the axial load ability is just high more.Angular dimension is represented with design factor e; The e value is big more, and contact angle is big more, and the applicability that bearing bears axial load is just big more.Tapered roller bearing is divergence type normally, and promptly the cone assembly of being made up of the inner ring of band roller and retainer assembly can be installed separately with cup (outer ring).
The tapered roller bearing outer ring is a tubulose, and its outer wall is cylindrical, and inwall is conical.Processing is forged in the general employing of outer ring in the existing production technology, and heating, blanking and forging and molding obtain the blank close with shape of product, need tempering after car cutting car spare make the blank lasso.Mainly there is the big problem of spillage of material in cutting in the production technology of above-mentioned outer ring, and the heat forged course of working exists deficiencies such as energy consumption is big, complex process.
Summary of the invention
At above-mentioned situation, the problem that quasi-solution of the present invention is determined provides that a kind of spillage of material is little, the manufacture method of saving energy, technology is simple, manufacturing efficiency is high tapered roller bearing outer ring.
For achieving the above object, the present invention by the following technical solutions: the manufacture method of a kind of tapered roller bearing outer ring, it may further comprise the steps:
A: get material, the quality of setting finished product tapered roller bearing outer ring is M, and external diameter is D,
With the external diameter is D
1The bearing steel pipe be raw material, getting quality is M
1This kind bearing steel pipe, it satisfies: 1/2D≤D
1＜D, M
1=2M+M
2+ 2M
3Described M
2Be the quality surplus of cutting, M
3It is the mill quality of processing surplus of single bearing outer ring;
B: cold roll expands, and the bearing steel pipe that step a is got grinds the conjuncted blank that expansion obtains the outer ring on stone roller expansion machine, promptly have the cycle blank of the outer loop-shaped of two tapered roller bearings, and described two cycle blanks connect by fastener rings;
The quality of described fastener rings is M
2The axial height of described fastener rings equates with the width of cutting saw kerf.
C, cutting, the conjuncted blank that step b is obtained the outer ring cuts at the fastener rings place, obtains the monomer blank of two outer rings, and the quality of the monomer blank of described each outer ring is M+M
3
D: heat treatment;
E: fine finishing: the monomer blank of the outer ring after the heat treatment is ground processing, obtain finished product tapered roller bearing outer ring, its quality is M.
Two cycle blanks connect by fastener rings among the described step b, and its long radius end that specifically is connected to two cycle blanks is connected with fastener rings respectively, or the minor radius end of two cycle blanks is connected with fastener rings respectively.The width of cutting saw kerf is the 1-4 millimeter among the described step b, and just the axial height of fastener rings is the 1-4 millimeter.Described heat treatment is: 845 ℃ ± 5 ℃ heat tracings 45 minutes, 90 ℃ ± 5 ℃ quick modification oil quenching baths coolings 20 minutes, clean the back tempering again.Described cleaning is: after 75 ℃ ± 5 ℃ detergent solutions heat is cleaned, change-10 ± 5 ℃ of detergent solution cold rinse over to after.Described tempering is: finished in 180 ± 10 minutes at air guipure tempering furnace.
Owing to adopted such scheme, make the outer ring of tapered roller bearing realize cold rolling forming, compare with traditional cutting, saved great deal of raw materials, experiment showed, that technology of the present invention saved raw material 20-35% than traditional cutting; Compare with traditional heat forged processing technology, can reduce heating cost and double annealing cost.Further eliminate the metal latent defect, improve metal structure, make metal streamline in the form of a ring and distribute rationally, the metal tightness is good, thereby improves the working life of bearing.In addition, the analysis of inhomogeneous deformation when the cold rolling of taper ring is expanded, aspect the metal distribution of determining cold rolling expansion fore bearing steel pipe blank ring, based on " horizontal cross-sectional area equal principle ", reduce the metal at small end position consciously, increase the metal of position, big end, position, big end when expanding, early is out of shape in cold rolling, changeable shape, the difference of part geometric accuracy is expanded in the rolling that causes to overcome big small end inhomogeneous deformation, adopt extra quality paired cold rolling expanding method can offset the axial force that produces because of assymmetrical deformation, improve collar precision, prolong cold rolling and expand the mold core roller life-span, enhance productivity.In a word, it is little that the manufacture method of tapered roller bearing of the present invention outer ring has spillage of material, and saving energy, technology are simple, the manufacturing efficiency advantages of higher, also can guarantee the quality of product simultaneously.
Description of drawings
Fig. 1 is the conjuncted blahk structure schematic representation of outer ring;
Fig. 2 is the structural representation of the monomer blank of outer ring.
Among the figure: the 1-fastener rings.
Embodiment
The manufacture method of tapered roller bearing of the present invention outer ring, it may further comprise the steps:
A: get material, the quality of setting finished product tapered roller bearing outer ring is M, and external diameter is D,
With the external diameter is D
1The bearing steel pipe be raw material, getting quality is M
1This kind bearing steel pipe, it satisfies: 1/2D≤D
1＜D, described M
1=2M+M
2+ 2M
3
Described M
2Be the quality surplus of cutting, M
3It is the mill quality of processing surplus of single bearing outer ring;
B: cold roll expands, and the bearing steel pipe that step a is got grinds the conjuncted blank (referring to Fig. 1) that expansion obtains the outer ring on stone roller expansion machine, promptly have the cycle blank of the outer loop-shaped of two tapered roller bearings, and described two cycle blanks are by fastener rings 1 connection; Its long radius end that specifically is connected to two cycle blanks is connected with fastener rings 1 respectively, or the minor radius end of two cycle blanks is connected with fastener rings 1 respectively.
The quality of described fastener rings 1 is M
2The axial height of described fastener rings 1 equates that with the width of cutting saw kerf the width of described cutting saw kerf is generally the 1-3 millimeter.
C, cutting, the conjuncted blank that step b is obtained the outer ring cuts at fastener rings 1 place, obtains the monomer blank of two outer rings, and the quality of the monomer blank of described each outer ring is M+M
3
D: heat treatment; Described heat treatment is: 845 ℃ ± 5 ℃ heat tracings 45 minutes, 90 ℃ ± 5 ℃ quick modification oil quenching baths coolings 20 minutes, clean the back tempering again.Described cleaning is: after 75 ℃ ± 5 ℃ detergent solutions heat is cleaned, change-10 ± 5 ℃ of detergent solution cold rinse over to after.Described tempering is: finished in 180 ± 10 minutes at air guipure tempering furnace.
E: fine finishing: the monomer blank of the outer ring after the heat treatment is ground processing, obtain finished product tapered roller bearing outer ring, its quality is M.
Embodiment 1
Tapered roller bearing overcoat with 30209 models is fabricated to example, and concrete manufacture method of the present invention is illustrated:
The tapered roller bearing overcoat mass M of 30209 models=0.161 kilogram, its outer diameter D=85 millimeter, long radius end internal diameter are 15 ° 6 ' 34 of 70 millimeter, internal diameter tapering ", the axial height of overcoat is 16 millimeters.
Set the quality surplus M of cutting
2Be 0.046 kilogram, the mill quality of processing surplus M of single bearing outer ring
3It is 0.001 kilogram.
1) gets material with outer diameter D
1=62 millimeters, internal diameter are that 42 millimeters bearing steel pipe is raw material, get M
1This kind bearing steel pipe of=0.37 kilogram, its length is 29.4 millimeters.
Here need to prove the raw-material outer diameter D of bearing steel pipe that is adopted
1Only need to satisfy: 1/2D≤D
1＜D gets final product, and has corresponding internal diameter, is that 42.5 millimeters, internal diameter are 25 millimeters as external diameter, or external diameter is that 84.5 millimeters, internal diameter are 65 millimeters, or external diameter is that 50 millimeters, internal diameter are 35 millimeters.
2) cold roll expands above-mentioned bearing steel pipe stone roller on stone roller expansion machine is expanded the conjuncted blank (referring to Fig. 1) that obtains the outer ring, the cycle blank that promptly has the outer loop-shaped of two tapered roller bearings, and described two cycle blanks connect by fastener rings 1, and its long radius end that specifically is connected to two cycle blanks is connected with fastener rings 1 respectively.Certainly can also be that the minor radius end of two cycle blanks is connected with fastener rings 1 respectively according to actual conditions.
35.4 millimeters of above-mentioned conjuncted blank axial heights.
3) the conjuncted blank of cutting outer ring cuts at fastener rings 1 place, and its cutting slit width degree is 3 millimeters, the quality surplus M of its cutting
2Be 0.046 kilogram, obtain the monomer blank of two outer rings.The quality of the monomer blank of described each outer ring is 0.162 kilogram, and axial height is 16.2 millimeters, outer diameter D=85.25 millimeter, long radius end internal diameter is 15 ° 6 ' 34 of 70.1 millimeter, internal diameter tapering ".
4) the heat-treatment quenching fire is handled and is made bearing parts obtain high hardness, intensity, and obtains satisfied comprehensive mechanical performance by tempering subsequently.Cold rolling lasso cleans the back marshalling through normal temperature, 845 ℃ ± 5 ℃ heat tracings in process hardening furnace 1～5 district are 45 minutes respectively, enter 90 ℃ ± 5 ℃ quick modification oil quenching bath coolings 20 minutes rapidly, after the cleaning of 75 ℃ ± 5 ℃ detergent solution heat changed-10 ± 5 ℃ of detergent solution cold rinse in 10 minutes again, finished in 180 ± 10 minutes through air guipure tempering furnace.
5) the monomer blank of the outer ring of fine finishing after with heat treatment grinds processing, described mill quality of processing surplus M
3=0.001 kilogram; Obtain finished product tapered roller bearing outer ring, its quality is about 0.161 kilogram, and axial height is 16 millimeters, outer diameter D=85 millimeter, long radius end internal diameter is 15 ° 6 ' 34 of 70 millimeter, internal diameter tapering ".
Embodiment 2
Tapered roller bearing overcoat with 30308 models is fabricated to example, and concrete manufacture method of the present invention is illustrated:
The tapered roller bearing overcoat mass M of 30308 models=0.266 kilogram, its outer diameter D=90 millimeter, long radius end internal diameter are 15 ° 6 ' 34 of 72 millimeter, internal diameter tapering ", the axial height of overcoat is 20 millimeters.
Set the quality surplus M of cutting
2Be 0.03 kilogram, the mill quality of processing surplus M of single bearing outer ring
3It is 0.001 kilogram;
1) gets material with outer diameter D
1=68 millimeters, internal diameter are that 46.5 millimeters bearing steel pipe is raw material, get M
1This kind bearing steel pipe of=0.566 kilogram, its length is 27.4 millimeters.
Here need to prove the raw-material outer diameter D of bearing steel pipe that is adopted
1Only need to satisfy: 1/2D≤D
1＜D gets final product, and has corresponding internal diameter, is that 45 millimeters, internal diameter are 30 millimeters as external diameter, or external diameter is that 89 millimeters, internal diameter are 68 millimeters, or external diameter is that 50 millimeters, internal diameter are 35 millimeters.
2) cold roll expands above-mentioned bearing steel pipe stone roller on stone roller expansion machine is expanded the conjuncted blank (referring to Fig. 1) that obtains the outer ring, the cycle blank that promptly has the outer loop-shaped of two tapered roller bearings, and described two cycle blanks connect by fastener rings 1, its long radius end that specifically is connected to two cycle blanks is connected with fastener rings 1 respectively, can also be that the minor radius end of two cycle blanks is connected with fastener rings 1 respectively according to actual conditions certainly.
43.4 millimeters of above-mentioned conjuncted blank axial heights.
3) the conjuncted blank of cutting outer ring cuts at fastener rings 1 place, and its cutting slit width degree is 3 millimeters, the quality surplus M of its cutting
2Be 0.03 kilogram, obtain the monomer blank of two outer rings.The quality of the monomer blank of described each outer ring is 0.268 kilogram, and axial height is 20.2 millimeters, outer diameter D=90.25 millimeter, long radius end internal diameter is 15 ° 6 ' 34 of 72.42 millimeter, internal diameter tapering ".
4) the heat-treatment quenching fire is handled and is made bearing parts obtain high hardness, intensity, and obtains satisfied comprehensive mechanical performance by tempering subsequently.Cold rolling lasso cleans the back marshalling through normal temperature, 845 ℃ ± 5 ℃ heat tracings in process hardening furnace 1～5 district are 45 minutes respectively, enter 90 ℃ ± 5 ℃ quick modification oil quenching bath coolings 20 minutes rapidly, after the cleaning of 75 ℃ ± 5 ℃ detergent solution heat changed-10 ± 5 ℃ of detergent solution cold rinse in 10 minutes again, finished in 180 ± 10 minutes through air guipure tempering furnace.
5) the monomer blank of the outer ring of fine finishing after with heat treatment grinds processing, described mill quality of processing surplus M
3=0.001 kilogram; Obtain finished product tapered roller bearing outer ring, its quality is about 0.266 kilogram, and axial height is 20 millimeters, outer diameter D=90 millimeter, long radius end internal diameter is 15 ° 6 ' 34 of 72 millimeter, internal diameter tapering ".
The tapered roller bearing car spare blank lasso overcoat of 30308 models then need stay 〉=0.6mm car chipping allowance as adopting the traditional hot forging and molding to obtain the blank close with shape of product, its quality is about 0.168 kilogram, therefore save raw material 20-35% by technology of the present invention than traditional cutting, and can reduce heating cost and double annealing cost.
Need to prove at last, wall thickness and other sizes according to the overcoat of tapered roller bearing, its cutting slit width degree is for being change,, other sizes more above-mentioned two overcoats that embodiment little thin as more above-mentioned two embodiments of wall thickness, its cutting slit width degree can be 1 millimeter or 2 millimeters, at this moment should the conjuncted blank fastener rings of corresponding change also be 1 millimeter or 2 millimeters, also want the quality surplus M of corresponding change cutting simultaneously
2
Claims (6)
1, the manufacture method of a kind of tapered roller bearing outer ring is characterized in that it may further comprise the steps:
A: get material, the quality of setting finished product tapered roller bearing outer ring is M, and external diameter is D,
With the external diameter is D
1The bearing steel pipe be raw material, getting quality is M
1This kind bearing steel pipe, it satisfies: 1/2D≤D
1＜D, M
1=2M+M
2+ 2M
3
Described M
2Be the quality surplus of cutting, M
3It is the mill quality of processing surplus of single bearing outer ring;
B: cold roll expands, and the bearing steel pipe that step a is got grinds the conjuncted blank that expansion obtains the outer ring on stone roller expansion machine, promptly have the cycle blank of the outer loop-shaped of two tapered roller bearings, and described two cycle blanks connect by fastener rings;
The quality of described fastener rings is M
2The axial height of described fastener rings equates with the width of cutting saw kerf.
C, cutting, the conjuncted blank that step b is obtained the outer ring cuts at the fastener rings place, obtains the monomer blank of two outer rings, and the quality of the monomer blank of described each outer ring is M+M
3
D: heat treatment;
E: fine finishing: the monomer blank of the outer ring after the heat treatment is ground processing, obtain finished product tapered roller bearing outer ring, its quality is M.
2, the manufacture method of tapered roller bearing according to claim 1 outer ring, it is characterized in that two cycle blanks connect by fastener rings among the described step b, its long radius end that specifically is connected to two cycle blanks is connected with fastener rings respectively, or the minor radius end of two cycle blanks is connected with fastener rings respectively.
3, the manufacture method of tapered roller bearing according to claim 1 outer ring is characterized in that the width of cutting saw kerf among the described step b is the 1-3 millimeter.
4, the manufacture method of tapered roller bearing according to claim 1 outer ring is characterized in that described heat treatment is: 845 ℃ ± 5 ℃ heat tracings 45 minutes, 90 ℃ ± 5 ℃ quick modification oil quenching baths coolings 20 minutes, clean the back tempering again
5, the manufacture method of tapered roller bearing according to claim 4 outer ring is characterized in that described cleaning is: after 75 ℃ ± 5 ℃ detergent solutions heat is cleaned, change-10 ± 5 ℃ of detergent solution cold rinse over to after.
6, the manufacture method of tapered roller bearing according to claim 4 outer ring is characterized in that described tempering is: finished in 180 ± 10 minutes at air guipure tempering furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100974525A CN101576125B (en) | 2009-04-03 | 2009-04-03 | Method for manufacturing outer ring of tapered roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100974525A CN101576125B (en) | 2009-04-03 | 2009-04-03 | Method for manufacturing outer ring of tapered roller bearing |
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| Publication Number | Publication Date |
|---|---|
| CN101576125A true CN101576125A (en) | 2009-11-11 |
| CN101576125B CN101576125B (en) | 2010-10-13 |
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ID=41271148
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100974525A Expired - Fee Related CN101576125B (en) | 2009-04-03 | 2009-04-03 | Method for manufacturing outer ring of tapered roller bearing |
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| CN103148104A (en) * | 2013-03-13 | 2013-06-12 | 泛科轴承集团有限公司 | Processing technology of bearing outer ring |
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| CN104191170A (en) * | 2014-08-15 | 2014-12-10 | 浙江环宇轴承有限公司 | Production process for conical roller bearing |
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| 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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| CN114770047A (en) * | 2022-05-11 | 2022-07-22 | 昆山众诚精密锻造有限公司 | Forging process of parachute snap ring |
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