CN102909309B - Universal joint forging method and shaping mould - Google Patents
Universal joint forging method and shaping mould Download PDFInfo
- Publication number
- CN102909309B CN102909309B CN201210395693.XA CN201210395693A CN102909309B CN 102909309 B CN102909309 B CN 102909309B CN 201210395693 A CN201210395693 A CN 201210395693A CN 102909309 B CN102909309 B CN 102909309B
- Authority
- CN
- China
- Prior art keywords
- forging
- cylinder
- intracavity bottom
- finishing
- universal joint
- 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.)
- Active
Links
- 238000005242 forging Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 73
- 238000007493 shaping process Methods 0.000 title claims abstract description 46
- 230000008569 process Effects 0.000 claims abstract description 22
- 238000009966 trimming Methods 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000010273 cold forging Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
The invention provides a kind of universal joint forging method, it comprises jumping-up, instead squeezes, turning and finishing, described anti-squeeze be to jumping-up after blank carry out backward extrusion and to form one end, there is inner chamber, the reeded cylinder blank of other end tool; Described finishing adopts shaping mould and forcing press to have inner chamber to one end, and the reeded cylinder blank of other end tool carries out the finishing forging of inner chamber and cylinder blank shape size; Wherein after described finishing procedure, increase trimming, carry out shaping to make the intracavity bottom R angle of cylinder forging stock consistent by the intracavity bottom fillet (being called for short R angle) to cylinder forging stock.Compared with prior art, the present invention increases the shaping process at forging stock intracavity bottom R angle in traditional handicraft, the R angle of simple shaping mould structure to intracavity bottom is adopted to carry out shaping, solve the problem that in common process, forging stock intracavity bottom R angle is inconsistent, ensure that the processing that forging is follow-up and assembling.
Description
Technical field
The present invention relates to precision metal forging field, particularly a kind of universal joint forging method and shaping mould.
Background technology
Universal joint, also known as sliding sleeve, is the building block of CV joint for car drive unit.Constant velocity cardan joint, it mainly contains sliding sleeve, three bearing pins, power transmission shaft, inner race, retainer, clutch can composition.This product cavity is evenly distributed in endoporus by arc surface, in endoporus, just naturally form alley, because constant velocity cardan joint transmits heavy driving moment, with being subject to load weight, transmission accuracy is high, is in great demand, be again safety member, therefore its major part all adopts fine forge piece to process.In assembling process, three bearing pins load in universal joint inner cavity, slide, prevent from interfering with intracavity bottom in sliding process, therefore will ensure the uniformity at universal joint chamber Bottom Shape and R angle in forging process.Manufacturing firm all adopts inner chamber precision forging blank technology both at home and abroad at present, can meet required precision like this, again reduce manufacturing cost and cycle, also meets the trend of world today's development of manufacturing simultaneously.
The production and processing technology of original universal joint finish forging pot shell base product mainly contains blanking → heating → carry out blank processing and forming on large-scale multistation warm forging forcing press, after annealing, pickling, phosphorating treatment, finishing or combined CV joint for car finish forging pot shell blank-making technology with the forming method that mould cross rolling process is different with cold-extrusion technology two kinds on cold forging forcing press.Refer to shown in Fig. 1 (a), it is gimbal structure schematic diagram.Refer to shown in Fig. 1 (b), it is the cross sectional representation of Fig. 1 (a).In figure, A place is intracavity bottom fillet (being called for short R angle), and B is inner chamber alley.Due to the serious wear of Warm Forging Die, R angle, warm forging drift edge caves in seriously, causes inner chamber R angle, A place inconsistent, impact assembling.
Therefore, be necessary that the technical scheme proposing a kind of improvement solves the problems referred to above.
Summary of the invention
An object of the present invention is to provide a kind of universal joint forging method, and it can ensure universal joint inner cavity bottom roundings (being called for short R angle) uniformity, ensure that following process and assembling.
Two of object of the present invention is to provide a kind of shaping mould, and it can ensure R angle uniformity at the bottom of product chamber, ensure that following process and assembling.
In order to solve the problem, according to an aspect of the present invention, the invention provides a kind of universal joint forging method, it comprises blanking, jumping-up, instead squeezes, turning and finishing, described anti-squeeze be to jumping-up after blank carry out backward extrusion and to form one end, there is inner chamber, the reeded cylinder blank of other end tool; Described finishing adopts shaping mould and forcing press to have inner chamber to one end, the reeded cylinder blank of other end tool carries out the finishing forging stock of inner chamber and cylinder blank shape size, wherein after described finishing procedure, increase trimming, described trimming is that the one end obtained by finishing procedure has inner chamber, shaping mould put into by the reeded cylinder forging stock of other end tool, carries out shaping to the intracavity bottom fillet (being called for short R angle) of cylinder forging stock.
Further, after described blanking procedure, also comprise ball blast before jumping-up operation, coating, heating process; After described anti-crowded operation, also comprise temperature control refrigerating work procedure before cylindrical turning process, described anti-operation of squeezing adopts warm forging technique; After described cylindrical turning process, also comprise ball blast and lubricating procedure before finishing procedure, described finishing procedure and trimming adopt cold-forging technique.
Further, the radius at the intracavity bottom R angle of described cylinder forging stock is 7 ± 1mm.
Further, the shaping mould for trimming comprises drift and counterdie, and the head edge of described drift is circle (being called for short R angle); Described counterdie is formed with the transition portion of cylindrical lower mode cavity, tube reducing mouth and connecting cylinder shape lower mode cavity and tube reducing mouth.
Further, the head sizes of described drift is less than the inner cavity size of cylinder forging stock, the intracavity bottom R angular shape of the head edge R angular shape laminating cylinder forging stock of described drift.
Further, described drift is upwards Openworks shape from the head 10mm place apart from drift.
Further, the R angle square cun little 0.1mm-0.2mm more very little than cylinder forging stock intracavity bottom R angle square at the head edge of described drift.
Further, described cylindrical lower mode cavity size 0.1mm-0.2mm larger than cylinder forging stock appearance and size.
Further, described tube reducing mouth is positioned at counterdie oral area.
According to a further aspect in the invention, the present invention proposes a kind of shaping mould, it is for blanking, jumping-up, instead squeezes, and the one end after turning and finishing has inner chamber, shaping is carried out to obtain the consistent cylinder forging stock in intracavity bottom R angle in the intracavity bottom R angle of other end tool reeded cylinder forging stock, it comprises drift and counterdie, and the head edge of described drift is R angle, and described counterdie is formed with the transition portion of cylindrical lower mode cavity, tube reducing mouth and connecting cylinder shape lower mode cavity and tube reducing mouth.
Beneficial effect of the present invention: compared with prior art, the present invention increases the shaping process at forging stock intracavity bottom R angle in traditional handicraft, the R angle of simple shaping mould structure to intracavity bottom is adopted to carry out shaping, solve the problem that in common process, at the bottom of product chamber, R angle is inconsistent, ensure that the processing that forging is follow-up and assembling.
Accompanying drawing explanation
Fig. 1 (a) is gimbal structure schematic diagram;
Fig. 1 (b) is the cross sectional representation of Fig. 1 (a);
Fig. 2 is universal joint forging method of the present invention process chart in one embodiment;
Fig. 3 is the product shaping procedure chart that the present invention utilizes mould to forge;
Fig. 4 is R angle shaping mould structural representation bottom universal joint inner cavity of the present invention.
Detailed description of the invention
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Alleged herein " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention.Different local in this manual " in one embodiment " occurred not all refers to same embodiment, neither be independent or optionally mutually exclusive with other embodiments embodiment.
The present invention increases the shaping process of forging stock intracavity bottom fillet (being called for short R angle) in traditional handicraft, simple shaping mould structure is adopted to carry out shaping to intracavity bottom R angle, solve the problem that in common process, at the bottom of product chamber, R angle is inconsistent, ensure that the processing that forging is follow-up and assembling.
Refer to shown in Fig. 2, it is universal joint forging method of the present invention process chart in one embodiment.Refer to shown in Fig. 3, its product shaping procedure chart utilizing mould to forge for the present invention.Process chart described in figure comprises the steps.
Step 210: blanking
Constant velocity cardan joint is strict to the chemical composition of steel, inside and outside quality or dimension precision requirement.Require to select suitable bar, adjustment cutting length, by the scope that Weight control is presetting.The shape of product of Fig. 3 (a) for obtaining after blanking procedure.
Step 220: jumping-up
Described jumping-up be by blanking procedure after solid cylindrical chaeta base put into mould and carry out jumping-up.The shape of product of Fig. 3 (b) for obtaining after jumping-up operation.
Step 230: instead to squeeze
Described anti-squeeze be to blanking, jumping-up after blank carry out backward extrusion and to form one end, there is inner chamber, the reeded cylinder blank of other end tool.The shape of product of Fig. 3 (c) for obtaining after anti-crowded operation.
Step 240: turning
Described turning squeezes the blank method for turning processing excircles surface after operation to anti-, to remove most allowance on blank, makes blank close to the shape and size required.The shape of product of Fig. 3 (d) for obtaining after cylindrical turning process.
Step 250: finishing
Described finishing adopts shaping mould and forcing press to have inner chamber to one end, and the reeded cylinder blank of other end tool carries out the finishing forging of inner chamber and cylinder blank shape size.The shape of product of Fig. 3 (e) for obtaining after finishing procedure.
Step 260: shaping
Described shaping is that the one end obtained through finishing procedure is had inner chamber, and shaping mould put into by the reeded cylinder forging stock of other end tool, carries out shaping to the intracavity bottom R angle of cylinder forging stock the rounded corner of R position (in the Fig. 3).The shape of product of Fig. 3 (f) for obtaining after trimming.
After described step 210 blanking procedure, also comprise ball blast before step 220 jumping-up operation, coating and heating process.
After described step 230 instead squeezes operation, also comprise temperature control refrigerating work procedure before step 240 cylindrical turning process, described anti-operation of squeezing adopts warm forging technique.
Described temperature control is cooled to and adopts temperature control furnace to cool forging, compared with conventional annealing, can annealing cycle shortening greatly, thus enhance productivity, reduce costs.Described finishing procedure and trimming adopt cold-forging technique.
In sum, universal joint forging method of the present invention adopts the technique of warm forging and cold-finish, first forges one end by the technique of warm forging and has inner chamber, the reeded cylinder warm forging blank of other end tool, mainly comprise blanking, ball blast, coating, heating, jumping-up, instead squeezes, and temperature control cools; Due to the principle of expanding with heat and contract with cold, after warm forging, the size of blank can produce convergent-divergent, can not meet the requirements of precision, therefore needs inner chamber and the appearance and size of forging cylinder blank by cold-finish operation.Because Warm Forging Die loss is large, R angle, drift edge caves in seriously, is difficult to ensure the size at card intracavity bottom R angle, therefore the present invention increases trimming after finishing is shaped, utilize mould and forcing press shaping intracavity bottom R angle, to reach technological requirement, ensure that the processing that forging is follow-up and assembling.
Refer to shown in Fig. 4, it is R angle shaping mould structural representation bottom universal joint inner cavity of the present invention.Shaping mould described in figure adopts simple mould structure, and it mainly comprises drift 410 and counterdie 430.Head 411 edge of described drift 410 is R angle, described counterdie 430 is formed with the transition portion of cylindrical lower mode cavity, tube reducing mouth and connecting cylinder shape lower mode cavity and tube reducing mouth, the fillet of to be radius be at the intracavity bottom R angle of described cylinder forging stock 7 ± 1mm, in order to cylinder forging stock can steadily be put into, described counterdie oral area 420 place has tube reducing mouth.
In the process with shaping mould shaping forging stock intracavity bottom R angle, in order to not have influence on other sizes of cylinder forging stock inner chamber, reach the effect at shaping its intracavity bottom R angle again, head 411 size of drift 410 is less than the inner cavity size of cylinder forging stock, but the head 411 edge R angle square of drift 410 cun laminating cylinder forging stock intracavity bottom shape.
In order to dodge the possibility of interference cylinder forging stock cavity shape, described drift is upwards Openworks shape from the head 10mm place apart from drift.
Conveniently drift 410 can enter cylinder forging stock inner chamber smoothly, the head 411 edge R angle square cun little 0.1mm-0.2mm more very little than forging stock intracavity bottom R angle square of described drift 410.
Because in reforming process, cylinder forging stock intracavity bottom shape can produce expansion due to stressed, size is easily overproof, described counterdie 430 size 0.1mm-0.2mm larger than cylinder forging stock appearance and size.
The process utilizing shaping mould to carry out the shaping of cylinder forging stock is: the cylinder forging stock after described step 250 finishing procedure is put into shaping mould, drift 410 moves downward, drift 410 head 411 enters in described cylinder forging stock inner chamber, fit the intracavity bottom of cylinder forging stock completely in the R angle, head 411 outer of described drift 410, by the R angle of head 411 outer of drift 410, shaping is carried out to cylinder forging stock intracavity bottom R angle, when press pressure reaches about 10MP upper punch 410 backhaul, cylinder forging stock intracavity bottom R angular shape shape is terminated.
The present invention increases the shaping process at forging stock intracavity bottom R angle in traditional handicraft, the R angle of simple shaping mould structure to intracavity bottom is adopted to carry out shaping, solve the problem that in common process, at the bottom of product chamber, R angle is inconsistent, ensure that the processing that forging is follow-up and assembling.
Above-mentioned explanation fully discloses the specific embodiment of the present invention.It is pointed out that the scope be familiar with person skilled in art and any change that the specific embodiment of the present invention is done all do not departed to claims of the present invention.Correspondingly, the scope of claim of the present invention is also not limited only to previous embodiment.
Claims (7)
1. a universal joint forging method, it comprises blanking, jumping-up, instead squeezes, turning and finishing, described anti-squeeze be to jumping-up after blank carry out backward extrusion and to form one end, there is inner chamber, the reeded cylinder blank of other end tool; Described finishing adopts shaping mould and forcing press to have inner chamber to one end, and the reeded cylinder blank of other end tool carries out the finishing forging of inner chamber and cylinder blank shape size, it is characterized in that:
After described finishing procedure, increase trimming, described trimming is that the one end obtained through finishing procedure is had inner chamber, and shaping mould put into by the reeded cylinder forging stock of other end tool, carries out shaping to the intracavity bottom fillet of cylinder forging stock,
Shaping mould for trimming comprises drift and counterdie,
The head edge of described drift is fillet;
Described counterdie is formed with the transition portion of cylindrical lower mode cavity, tube reducing mouth and connecting cylinder shape lower mode cavity and tube reducing mouth,
The head sizes of described drift is less than the intracavity bottom size of cylinder forging stock, the intracavity bottom rounded shapes of the head edge rounded shapes laminating cylinder forging stock of described drift.
2. universal joint forging method according to claim 1, is characterized in that: after described blanking procedure, also comprises ball blast, coating, heating process before jumping-up operation;
After described anti-crowded operation, also comprise temperature control refrigerating work procedure before cylindrical turning process, described anti-operation of squeezing adopts warm forging technique;
After described cylindrical turning process, also comprise ball blast and lubricating procedure before finishing procedure, described finishing procedure and trimming adopt cold-forging technique.
3. universal joint forging method according to claim 1, is characterized in that: the radius of the intracavity bottom fillet of cylinder forging stock is 7 ± 1mm.
4. universal joint forging method according to claim 1, is characterized in that: described drift is upwards Openworks shape from the head 10mm place apart from drift.
5. universal joint forging method according to claim 1, is characterized in that: the fillet size 0.1mm-0.2mm less of cylinder forging stock intracavity bottom fillet size at the head edge of described drift.
6. universal joint forging method according to claim 1, is characterized in that: described cylindrical lower mode cavity size 0.1mm-0.2mm larger than cylinder forging stock appearance and size.
7. universal joint forging method according to claim 1, is characterized in that: described tube reducing mouth is positioned at counterdie oral area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210395693.XA CN102909309B (en) | 2012-10-17 | 2012-10-17 | Universal joint forging method and shaping mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210395693.XA CN102909309B (en) | 2012-10-17 | 2012-10-17 | Universal joint forging method and shaping mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102909309A CN102909309A (en) | 2013-02-06 |
| CN102909309B true CN102909309B (en) | 2015-09-02 |
Family
ID=47608021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210395693.XA Active CN102909309B (en) | 2012-10-17 | 2012-10-17 | Universal joint forging method and shaping mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102909309B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397436A (en) * | 2015-11-26 | 2016-03-16 | 宁波正凯机械有限公司 | Processing technology of retainer workblank |
| CN105903774A (en) * | 2016-04-27 | 2016-08-31 | 江苏威鹰机械有限公司 | Method for eliminating cylinder bottom sunken portion of warm-cold-formed inner cavity of thin-walled cylindrical piece |
| CN109604978A (en) * | 2018-12-05 | 2019-04-12 | 盐城昱祺机械制造有限公司 | It is a kind of to solve the big processing method of the high scattered error of out star wheel soccer star |
| CN112045143B (en) * | 2020-07-03 | 2022-03-15 | 江苏海宇机械有限公司 | Forging and forming process for blank of sliding sleeve of flange type universal joint for vehicle |
| CN113941678B (en) * | 2020-07-15 | 2023-09-12 | 安徽弈华重工科技股份有限公司 | Forging process for hub sleeve warm forging and cold extrusion and die thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491819A (en) * | 2009-03-12 | 2009-07-29 | 长春三友汽车部件制造有限公司 | Sedan B-post high-strength plate cold stretching-forming die and technique |
| CN101633017A (en) * | 2009-08-04 | 2010-01-27 | 山东潍坊福田模具有限责任公司 | Punching method for preventing plate corner part in car door from wrinkling |
| CN102248101A (en) * | 2011-06-15 | 2011-11-23 | 江苏创一精锻有限公司 | Whole forging near net forming process for inner ball cage sliding sleeve |
| CN102528391A (en) * | 2011-12-23 | 2012-07-04 | 江苏森威精锻有限公司 | Forming method for improving coaxiality of backward-extruding inner cavity and external form of cardan sleeve |
| CN102554004A (en) * | 2011-12-26 | 2012-07-11 | 苏州三维精密机械有限公司 | Drawing process of cup body with square flange |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121849A (en) * | 1994-10-25 | 1996-05-08 | 江苏森威集团股份有限公司 | Precision forging process for outer sleeve blank of constant velocity universal joint of automobile |
| CN1125736C (en) * | 2000-08-04 | 2003-10-29 | 江苏太平洋精密锻造有限公司 | Manufacturing process of blank of inner star wheel of constant velocity universal joint of automobile |
| CN100404164C (en) * | 2006-07-11 | 2008-07-23 | 张华文 | Production process for preparing finish forged blank of axial-shifting through-hole type universal joint housing and dedicated die therefor |
| CN101306442B (en) * | 2007-05-15 | 2010-07-14 | 张华文 | Process method of tripod ball inner sliding sleeve capable of axially moving and back extrusion concave die |
| CN101550969B (en) * | 2008-04-03 | 2011-05-11 | 江苏威鹰机械有限公司 | Production process of automobile constant velocity cardan joint transmission shaft inner sliding sleeve finish forging pot shell |
| CN201333480Y (en) * | 2008-12-17 | 2009-10-28 | 山西惠丰机械工业有限公司 | Floating punch drawing die structure |
| CN201338048Y (en) * | 2009-01-09 | 2009-11-04 | 嘉兴和新精冲科技有限公司 | Fine blanking die without fracture zone |
| JP5558272B2 (en) * | 2010-09-07 | 2014-07-23 | Ｎｔｎ株式会社 | Forging molding apparatus and forging molding method |
| JP2012087847A (en) * | 2010-10-18 | 2012-05-10 | Ntn Corp | Fixed type constant velocity universal joint |
| CN102335702B (en) * | 2011-08-19 | 2014-04-02 | 江苏森威精锻有限公司 | Formation method for improving finishing accuracy of universal joint sliding sleeve and mould thereof |
-
2012
- 2012-10-17 CN CN201210395693.XA patent/CN102909309B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491819A (en) * | 2009-03-12 | 2009-07-29 | 长春三友汽车部件制造有限公司 | Sedan B-post high-strength plate cold stretching-forming die and technique |
| CN101633017A (en) * | 2009-08-04 | 2010-01-27 | 山东潍坊福田模具有限责任公司 | Punching method for preventing plate corner part in car door from wrinkling |
| CN102248101A (en) * | 2011-06-15 | 2011-11-23 | 江苏创一精锻有限公司 | Whole forging near net forming process for inner ball cage sliding sleeve |
| CN102528391A (en) * | 2011-12-23 | 2012-07-04 | 江苏森威精锻有限公司 | Forming method for improving coaxiality of backward-extruding inner cavity and external form of cardan sleeve |
| CN102554004A (en) * | 2011-12-26 | 2012-07-11 | 苏州三维精密机械有限公司 | Drawing process of cup body with square flange |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102909309A (en) | 2013-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102909309B (en) | Universal joint forging method and shaping mould | |
| CN101695806B (en) | Process for manufacturing backward gear of automobile gearbox | |
| CN104646956B (en) | Process for machining ball cage bell-like shell | |
| CN103624506B (en) | Capstan winch internal gear finish forge plastic forming technique | |
| CN104057263B (en) | Large-scale locomotive connecting rod forging technology | |
| CN100469486C (en) | Rolling preparation method for thick-walled and thin-bottomed basin parts | |
| CN109773094B (en) | Production process of large-tonnage super-large-diameter aluminum alloy special-shaped ring forging | |
| CN102861861A (en) | Precision-forging plastic molding technology of bell shell of ball-cage type universal joint | |
| CN107020484B (en) | A kind of manufacturing method of three teeth | |
| CN114309442B (en) | Milling-free machining method for ball channel of inner star wheel of automobile universal joint | |
| CN102441773A (en) | Hot precision forging and cold precision shaping composite process for spiral bevel gear | |
| CN104139279B (en) | The manufacturing process of interior trapezoidal grooved ring shape part | |
| CN105710620A (en) | Manufacturing process for conjunction-tooth gear of car transmission | |
| CN101406922A (en) | Grinding ball production method and rotary cutting roll forging machine for grinding ball production | |
| CN105458027A (en) | Cold extrusion forming process and die for vibration block forge piece | |
| CN113618017A (en) | A billet making method for integrated cutting and expanding control of metal streamline distribution of roller bearing rings | |
| CN109454198A (en) | The method for forging and molding and its triple gear of a kind of triple gear and application | |
| CN107443019A (en) | The warm cold duplex forging manufacturing process of deep hole input shaft | |
| CN103522000A (en) | Machine tool spindle blank processing method | |
| CN105945519A (en) | Cold forging forming technology of hollow pipe output shaft | |
| CN102189141A (en) | Method for performing extrusion molding on internal hexagon bolt of alloy steel track end coupling device | |
| CN104959778A (en) | Constant speed universal joint end face transmission gear precision forging moulding technology | |
| CN102861857A (en) | Rolling bearing forging process | |
| CN109175175B (en) | Precise hot-working forming method for automobile steering ball joint | |
| CN202893997U (en) | Cardan joint inner cavity bottom fillet shaping die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 224100 West Zone, Dafeng District, Jiangsu, Yancheng City Patentee after: Jiangsu R & D Polytron Technologies Inc Address before: 224100 No. three, West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu Patentee before: Yancheng Liyan Precision Forging Co.,Ltd. |