CN101576125B - Method for manufacturing outer ring of tapered roller bearing - Google Patents

Method for manufacturing outer ring of tapered roller bearing Download PDF

Info

Publication number
CN101576125B
CN101576125B CN2009100974525A CN200910097452A CN101576125B CN 101576125 B CN101576125 B CN 101576125B CN 2009100974525 A CN2009100974525 A CN 2009100974525A CN 200910097452 A CN200910097452 A CN 200910097452A CN 101576125 B CN101576125 B CN 101576125B
Authority
CN
China
Prior art keywords
ring
tapered roller
quality
blank
roller bearing
Prior art date
Application number
CN2009100974525A
Other languages
Chinese (zh)
Other versions
CN101576125A (en
Inventor
黄仁太
施亚珍
刘长明
Original Assignee
浙江明星轴承有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 浙江明星轴承有限公司 filed Critical 浙江明星轴承有限公司
Priority to CN2009100974525A priority Critical patent/CN101576125B/en
Publication of CN101576125A publication Critical patent/CN101576125A/en
Application granted granted Critical
Publication of CN101576125B publication Critical patent/CN101576125B/en

Links

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 outerring 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 theconnecting 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 ofthe 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

A kind of manufacture method of outer ring of tapered roller bearing
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, is D with the external diameter 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.
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 solution heat is cleaned, change-10 ± 5 ℃ of detergent solution cold rinse over to.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 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 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.
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 solution heat is cleaned, change-10 ± 5 ℃ of detergent solution cold rinse over to.
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.
CN2009100974525A 2009-04-03 2009-04-03 Method for manufacturing outer ring of tapered roller bearing CN101576125B (en)

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

Publications (2)

Publication Number Publication Date
CN101576125A CN101576125A (en) 2009-11-11
CN101576125B true CN101576125B (en) 2010-10-13

Family

ID=41271148

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100974525A CN101576125B (en) 2009-04-03 2009-04-03 Method for manufacturing outer ring of tapered roller bearing

Country Status (1)

Country Link
CN (1) CN101576125B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010012167A1 (en) * 2010-03-20 2011-09-22 Schaeffler Technologies Gmbh & Co. Kg Method for the simultaneous production of more than one bearing ring for a tapered roller bearing
CN102310310B (en) * 2010-07-08 2015-03-11 襄阳汽车轴承股份有限公司 Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings
CN102528588A (en) * 2010-12-24 2012-07-04 大连冶金轴承股份有限公司 Machining method for dividing super-large double-row cylindrical roller bearings
CN102635635A (en) * 2011-06-14 2012-08-15 李东炬 Precise ceramic bearing and machining process thereof
CN102248369A (en) * 2011-06-14 2011-11-23 大连大友高技术陶瓷有限公司 Production process of high-precision ball bearing ring
CN102319982A (en) * 2011-06-14 2012-01-18 大连大友高技术陶瓷有限公司 Production process for high-precision roller bearing ring
CN102601579A (en) * 2011-06-14 2012-07-25 李东炬 Production process for high-precision deep groove ball bearings
CN102297203A (en) * 2011-06-15 2011-12-28 大连大友高技术陶瓷有限公司 Production process for high-precision roller bearing
CN102297198A (en) * 2011-06-15 2011-12-28 大连大友高技术陶瓷有限公司 Production technology of dry friction rolling bearing utilized specially for nuclear reactor
CN102588439A (en) * 2011-06-16 2012-07-18 李东炬 Production process for high-precision angular contact ceramic ball bearing
CN102909535B (en) * 2012-11-01 2015-04-15 无锡民联轴承制造有限公司 Method for rolling and forging bearing ring once
CN103148104B (en) * 2013-03-13 2015-09-23 泛科轴承集团有限公司 The processing technology of bearing outer ring
CN103551811B (en) * 2013-11-11 2016-03-02 东阿县鑫兴机械加工有限公司 The manufacture craft of the accurate deep groove ball bearing of a kind of high-speed and high-temperature
CN104191170A (en) * 2014-08-15 2014-12-10 浙江环宇轴承有限公司 Production process for conical roller bearing
CN104493439A (en) * 2014-11-28 2015-04-08 江阴吉爱倍万达精工有限公司 Orging process of outer blank for double-row tapered roller bearings
CN104526284A (en) * 2014-12-19 2015-04-22 常熟市常轴轴承有限公司 Thin-walled bearing ring lathing process
CN109593948A (en) * 2019-01-16 2019-04-09 杭州骏马轴承有限公司 A kind of heat treatment method reducing GCr15 steel bearings lasso grinding deformation

Citations (2)

* Cited by examiner, † Cited by third party
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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2007-16959A 2007.01.25

Also Published As

Publication number Publication date
CN101576125A (en) 2009-11-11

Similar Documents

Publication Publication Date Title
CN102836895B (en) A kind of manufacture method of special-shaped seamless steel pipe
JP5504222B2 (en) Molding set for cold forming machine
JP5121168B2 (en) Rolling member manufacturing method and rolling bearing manufacturing method
Gronostajski et al. The main aspects of precision forging
CN105107917B (en) A kind of tank Loadings On Hemispherical Shell manufacturing process for improving mechanical property
CN102601587B (en) Manufacturing process of aluminum alloy rim of large vehicle
CN105107915B (en) Technological method for precise spinning forming of large magnesium alloy thin-walled cylindrical part
Allwood et al. The development of ring rolling technology
CN102350615B (en) Shunt blocking forming method for star-shaped sleeve
CN102615223B (en) The method of rolling two trapezoid cross section flange ring forging parts simultaneously
CN103316926B (en) Cold rolling forming method for automotive hub bearing ring part with L-shaped cross section
CN100394075C (en) Gear ring blank for automobile synchronizer and method for processing same
CN100506422C (en) Flange of wind power generation tower barrel forging shaping process
CN103551811B (en) The manufacture craft of the accurate deep groove ball bearing of a kind of high-speed and high-temperature
CN102294456B (en) Manufacturing method for oblique rolling of bimetallic compound seamless steel pipe by centrifugal blank
CN103615525B (en) With speed changer planetary carrier and the production technology thereof of support shaft
CN105252230B (en) Machining process for inclined tee
CN101695739B (en) Forging process of large tee and large skew tee
CN102861861A (en) Precision-forging plastic molding technology of bell shell of ball-cage type universal joint
CN101579800B (en) Warm/cold forging process for precision forgings with integrated long shafts and inner ball cages
CN101722262B (en) New method for producing medium and large caliber alloy steel seamless pipe by utilizing radial forging technology
CN102350622B (en) Production process of straight tooth gear of oil pump
CN101214510B (en) Blind hole internal gear precision forming method and internal tooth forming mold
CN103624506B (en) Capstan winch internal gear finish forge plastic forming technique
CN100396433C (en) Grooved ball section annular-piece cold-ring-rolling shaping method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20101214

Address after: 751600 the Ningxia Hui Autonomous Region Qingtongxia City Garbo Industrial Park No. 1

Patentee after: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

Address before: 312375, Zhejiang, Shangyu Town, 104 State Road next to

Patentee before: Zhejiang Mingxing Bearing Co., Ltd.

ASS Succession or assignment of patent right

Owner name: NINGXIA QINCHANG ROLLER-BEARING MANUFACTURING CO.,

Free format text: FORMER OWNER: ZHEJIANG MINGXING BEARING CO., LTD.

Effective date: 20101214

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 312375 NEARBY NATIONAL ROAD 104, SHANGPU TOWN, SHANGYU CITY, ZHEJIANG PROVINCE TO: 751600 NO.1, JIABAO INDUSTRIAL PARK, QINGTONGXIA CITY, NINGXIA HUI AUTONOMOUS REGION

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 751600 WUZHONG, NINGXIA HUI AUTONOMOUS REGION TO: 312375 SHAOXING, ZHEJIANG PROVINCE

ASS Succession or assignment of patent right

Owner name: ZHEJIANG MINGXING BEARING CO., LTD.

Free format text: FORMER OWNER: NINGXIA QINCHANG ROLLER-BEARING MANUFACTURING CO., LTD.

Effective date: 20120410

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20120410

Address after: 312375, Zhejiang, Shangyu Town, 104 State Road next to

Patentee after: Zhejiang Mingxing Bearing Co., Ltd.

Address before: 751600 the Ningxia Hui Autonomous Region Qingtongxia City Garbo Industrial Park No. 1

Patentee before: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

CP03 Change of name, title or address

Address after: 751600 the Ningxia Hui Autonomous Region Qingtongxia City Garbo Industrial Park No. 1

Patentee after: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

Address before: 312375, Zhejiang, Shangyu Town, 104 State Road next to

Patentee before: Zhejiang Mingxing Bearing Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: NINGXIA QINCHANG ROLLER-BEARING MANUFACTURING CO.,

Free format text: FORMER NAME: ZHEJIANG MINGXING BEARING CO., LTD.

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Method for manufacturing outer ring of tapered roller bearing

Effective date of registration: 20140616

Granted publication date: 20101013

Pledgee: Bank of Ningxia science and technology branch of Limited by Share Ltd

Pledgor: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

Registration number: 2014990000463

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Method for manufacturing outer ring of tapered roller bearing

Effective date of registration: 20150831

Granted publication date: 20101013

Pledgee: Bank of Ningxia science and technology branch of Limited by Share Ltd

Pledgor: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

Registration number: 2015990000739

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20150824

Granted publication date: 20101013

Pledgee: Bank of Ningxia science and technology branch of Limited by Share Ltd

Pledgor: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

Registration number: 2014990000463

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Method for manufacturing outer ring of tapered roller bearing

Effective date of registration: 20161014

Granted publication date: 20101013

Pledgee: Bank of Ningxia science and technology branch of Limited by Share Ltd

Pledgor: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

Registration number: 2016990000867

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20161012

Granted publication date: 20101013

Pledgee: Bank of Ningxia science and technology branch of Limited by Share Ltd

Pledgor: Ningxia Qinchang Antifriction Bearing Manufacturing Co., Ltd.

Registration number: 2015990000739

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101013

Termination date: 20180403