CN103586299A - High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator - Google Patents

High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator Download PDF

Info

Publication number
CN103586299A
CN103586299A CN201310610221.6A CN201310610221A CN103586299A CN 103586299 A CN103586299 A CN 103586299A CN 201310610221 A CN201310610221 A CN 201310610221A CN 103586299 A CN103586299 A CN 103586299A
Authority
CN
China
Prior art keywords
flexbile gear
extrusion
blank
technology
gear blank
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.)
Pending
Application number
CN201310610221.6A
Other languages
Chinese (zh)
Inventor
徐淑波
刘婷
赵中魁
任国成
林晓娟
刘鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Jianzhu University
Original Assignee
Shandong Jianzhu University
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 Shandong Jianzhu University filed Critical Shandong Jianzhu University
Priority to CN201310610221.6A priority Critical patent/CN103586299A/en
Publication of CN103586299A publication Critical patent/CN103586299A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention relates to a new extrusion technology for the high efficiency processing of a high-alloy steel flexible wheel blank. The technology is characterized in that a thin-wall cylindrical flexible wheel blank is extrusion-molded on a general crank press, an extruder or a hydraulic press by adopting isothermal backward extrusion. A backpressure is applied to the flexible wheel blank through a backpressure sleeve in the extrusion process, and the deviation of the lower end of a male die is limited through the backpressure sleeve, so the uneven surface and non-uniform wall thickness phenomena of the air interface of the flexible wheel blank are avoided. The technology has a higher processing efficiency than a traditional spin molding method, and the surface quality and the mechanical performances of the blank obtained through the technology are better than that of the blank obtained through a hot forging molding method. The air interfaces of the flexible wheel blanks obtained through the spin molding and the traditional extrusion molding have the uneven surface and non-uniform wall thickness phenomena, and the technology has the advantages of high processing efficiency, high dimensional precision, high surface quality, processing step reduction, yield increase, and prolongation of the life of a die. The technology reserves the substantial advantages of material saving, energy saving and low cost of warm extrusion precision molding, also improves the processing and production efficiencies of gears, and has a very good practical prospect.

Description

A kind of high-alloy steel flexbile gear blank warm extrusion technology for harmonic speed reducer
Technical field
The invention belongs to a kind of warm-extrusion forming technique and Tool and Die Technology of the thin wall cylinder-shaped high-alloy steel flexbile gear for industrial robot joint harmonic speed reducer, for improving mechanical property and the working (machining) efficiency of flexbile gear.。
Background technology
Keying in herein background technology describes the flexbile gear of paragraph industrial robot joint harmonic speed reducer and has the cup-shaped ﹑ thin wall cylinder-shaped of thin-walled or flat embedded etc. multiple.There is gear ring the open end outside of thin wall cylinder-shaped flexbile gear, and it is out of shape with the rotation of wave producer, and cylinder bottom minute connects with output shaft.At present, the production of most thin wall cylinder-shaped flexbile gear adopts spinning method to produce mostly, but it has a lot of defects, as: cost is high, and working (machining) efficiency is low, and the difficult deformation characteristics for high-alloy steel material exists the high problem of blank scrappage simultaneously.Along with the development of mechanical industry and intensifying of international competition, the raising of performance of flexbile gear product and the reduction of processing cost are had higher requirement, especially the raising of working (machining) efficiency.Therefore the new process that obtains flexbile gear blank by extrusion technique has obtained paying attention to and developing.This type of processing method is improved more than 10 times by the working (machining) efficiency of original traditional spinning process processing method, and flexspline strength also improves 30%.According to the problem of flexbile gear processing, inventor has proposed a kind of highly-efficient processing for the flexbile gear blank warm extrusion technology of harmonic speed reducer.
This highly-efficient processing is that to take Warm Extrusion precision form new technology and the Tool and Die Technology of flexbile gear blank be basis for the cold forging new method of the flexbile gear blank of harmonic speed reducer, extrusion molding thin wall cylinder-shaped flexbile gear blank on general crank press, extruder or hydraulic press.This kind of method is the technique that adopts Warm Extrusion precision form, produce the product that as far as possible approaches flexbile gear net shape, this kind of method not only has material-saving, energy-conservation, the low-cost significant advantage that waits, and can greatly reduce resistance of deformation and increase deformation ratio by heating blank forming, improve mechanical property and the processing characteristics of flexbile gear, in addition, owing to adopting general crank press, extruder or hydraulic press are shaped, do not need special installation, after obtaining blank, dimensional accuracy is high, only need to adopt the silk thread of being careful to cut out gear and can obtain finished product, mould pressing than flexbile gear has higher working (machining) efficiency and yield rate.
In this flexbile gear Warm Extrusion precision form new technology and Tool and Die Technology, adopt the manufacture of Warm Extrusion accurate forming method to approach flexbile gear part shape blank fine forge piece, more traditional spin forming method working (machining) efficiency is high, and the surface quality and the mechanical property that compared with hot forging forming method, obtain are good.No matter be mould pressing or traditional extrusion molding, the flexbile gear blank obtaining is eated dishes without rice or wine all can produce and is uneven and the even phenomenon of wall unevenness, in Design of Dies of the present invention, employing has the mould structure of compensation space, be characterized in being equipped with the back pressure cover with punch matched in clearance on stripper, by back pressure cover, flexbile gear blank is applied to back pressure, by back pressure, overlap restriction punch lower end simultaneously and be offset, thereby avoid flexbile gear blank to eat dishes without rice or wine all can produce, be uneven and the even phenomenon of wall unevenness.Above-mentioned measure can improve surface quality and mechanical property, improves die life simultaneously.Above-mentioned new technology makes the precise extrusion molding of thin wall cylinder-shaped high-alloy steel flexbile gear, and the mechanical property of the part that not only can obtain gets a greater increase, but also has higher production efficiency.Therefore, the high-alloy steel flexbile gear blank warm extrusion technology of this highly-efficient processing harmonic speed reducer has good use value and development prospect.。
Summary of the invention
The object of patent of the present invention is: for the problems referred to above, overcome flexbile gear processing cost high, working (machining) efficiency is low, and the difficult deformation characteristics for high-alloy steel material exists the high problem of flexbile gear blank scrappage simultaneously.On general crank press, extruder or hydraulic press, employing, with the Warm Extrusion precision form of back pressure feature, finally obtains the blank of nearly flexbile gear net shape, and more traditional forming technique has reduced the cutting output of rear operation, reduce percent defective, improved working (machining) efficiency.Warm Extrusion precision form with back pressure feature, applies back pressure by back pressure cover to flexbile gear blank, overlaps restriction punch lower end be simultaneously offset by back pressure, thereby avoid flexbile gear blank to eat dishes without rice or wine all can produce, is uneven and the even phenomenon of wall unevenness.Can reduce manufacturing procedure, further improve working (machining) efficiency and the yield rate of gear.
The technical scheme of patent of the present invention is: the present invention is a kind of high-alloy steel flexbile gear blank warm extrusion technology for harmonic speed reducer, comprises the set-up procedure of blank, continuous two stages of warm-extrusion forming process.
The set-up procedure of blank mainly comprises rod iron blanking, material softening annealing, bead blasted surfaces treatment process, washing, phosphatization and saponification process; Warm Extrusion process mainly comprises with the technique that realizes material and be full of die cavity, employing has the mould structure of compensation space, by back pressure cover, flexbile gear blank is applied to back pressure, by back pressure, overlap restriction punch lower end simultaneously and be offset, thereby avoid flexbile gear blank to eat dishes without rice or wine all can produce, be uneven and the even phenomenon of wall unevenness.And working portion of die is comprised of inloading part device, die, back pressure cover and punch.
Adopt this kind of scheme, the flexbile gear blank high by Warm Extrusion accurate forming method once-forming surface quality, precision is high and mechanical property is good.This new technology can realize higher soft working (machining) efficiency.
As a modification of the present invention, by back pressure cover, flexbile gear blank is applied to back pressure, by back pressure, overlap restriction punch lower end simultaneously and be offset, on general crank press, extruder or hydraulic press by the mould high-alloy steel flexbile gear blank of warm-extrusion forming for harmonic speed reducer that make progress.
Adopt this kind of scheme, be not only conducive to improve size, form accuracy and the mechanical property of flexbile gear blank part, the service life of mould, and can further improve the working (machining) efficiency of flexbile gear.
Accompanying drawing explanation
In conjunction with the accompanying drawings and embodiments specific embodiment of the invention scheme to be described in detail below.
Fig. 1 is flexbile gear part drawing of the present invention;
Fig. 2 is process schematic diagram of the present invention;
Fig. 3 the present invention has the mould schematic diagram of the compensation space of back pressure cover;
Fig. 4 is Warm Extrusion precision forming mold schematic diagram of the present invention;
Being labeled as in above-mentioned figure:
Fig. 3 is 1. punch of the present invention's mould with compensation space, 2. back pressure cover, 3. flexbile gear blank, 4. push rod, 5. die;
Fig. 4 is 1. patrixes of temperature extension mould schematic diagram of the present invention, 2. stripper bolt, 3. spring, 4. stripper, 5. die, 6. ground floor prestressing force lasso, 7. prestressing force lasso for the second time, 8. die adjustment circle, 9. ground floor die backing plate, 10. second layer die backing plate, 11. tip-lever supports, 12. die shoes, 13. die centring rings, 14. die pressing plates, 15. flexbile gear forming workblanks, 16. back pressure covers, 17. back pressure cover fixed heads, 18. briquettings, 19. rubber elastic elements, 20. punch, 21. convex mould pads, 22. upper bolsters.
The invention has the beneficial effects as follows: the present invention is due to the Warm Extrusion once-forming technique adopting with back pressure, in die, adopted the Warm Extrusion precision form with back pressure feature, the final blank that obtains nearly flexbile gear net shape, more traditional forming technique has reduced the cutting output of rear operation, reduce percent defective, improved working (machining) efficiency.And warm-extrusion forming technique has higher working (machining) efficiency than spinning process.
The specific embodiment
Fig. 3 is the compensation space mould structure schematic diagram with back pressure cover, by back pressure, overlap 1 inserts in die 2 together with punch 3 matched in clearance, contact blank, now, because the matched in clearance between back pressure cover 1 and punch 3 can effectively be avoided the skew of punch lower end, prevent that flexbile gear blank wall unevenness is even, along with punch 3 continues descending, blank becomes tubular by round pie, and back pressure is enclosed within certain pressure and nozzle blank juxtaposition metamorphose, finally forces flexbile gear blank nozzle metal flow to be tending towards concordant.
Fig. 4 is warm extrusion forming die of the present invention, employing has the mould structure of compensation space, by back pressure cover, flexbile gear blank is applied to back pressure, by back pressure, overlap restriction punch lower end is offset simultaneously, thereby avoid flexbile gear blank to eat dishes without rice or wine all can produce, be uneven and the even phenomenon of wall unevenness, when mould is closed, has pushed and obtained the blank that meets flexbile gear dimensional requirement, by lower ejecting mechanism 5, flexbile gear blank is ejected to the high-alloy steel flexbile gear blank that obtains harmonic speed reducer.
Equipment required for the present invention is general crank press, extruder or hydraulic press.

Claims (3)

1. the high-alloy steel flexbile gear blank warm-extrusion forming technique for harmonic speed reducer, with with back pressure, the mould structure simultaneously with compensation space is realized the precision form of flexbile gear blank, it is characterized in that: the whole technique of a. comprises two processes: two corresponding stages of the set-up procedure of blank and Warm Extrusion Forming process; B. flexbile gear blank warm extrusion forming die applies back pressure by back pressure cover to flexbile gear blank, overlaps restriction punch lower end be simultaneously offset by back pressure, has further improved the dimensional accuracy of Forming Workpiece.
2. a kind of high-alloy steel flexbile gear blank warm-extrusion forming technique for harmonic speed reducer according to claim 1, it is characterized in that: the method for isothermal backward extrusion flexbile gear blank, method than mould pressing flexbile gear blank has higher working (machining) efficiency, once-forming has the flexbile gear blank of high dimensional accuracy, reduce the manufacturing procedure of otch, improved greatly the working (machining) efficiency of flexbile gear.
3. a kind of high-alloy steel flexbile gear blank Warm Extrusion new method for harmonic speed reducer according to claim 1, it is characterized in that: the technique of isothermal backward extrusion flexbile gear blank is the another kind of new method of producing by mould on general crank press, extruder or hydraulic press, the range of application of having widened general crank press, extruder or hydraulic press.
CN201310610221.6A 2013-11-27 2013-11-27 High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator Pending CN103586299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310610221.6A CN103586299A (en) 2013-11-27 2013-11-27 High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310610221.6A CN103586299A (en) 2013-11-27 2013-11-27 High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator

Publications (1)

Publication Number Publication Date
CN103586299A true CN103586299A (en) 2014-02-19

Family

ID=50076735

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310610221.6A Pending CN103586299A (en) 2013-11-27 2013-11-27 High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator

Country Status (1)

Country Link
CN (1) CN103586299A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN108838226A (en) * 2018-07-13 2018-11-20 中国航发北京航空材料研究院 One kind being used for the hot backward extrusion method of titanium alloy cup shell
CN111151760A (en) * 2020-01-20 2020-05-15 哈尔滨工业大学 Deformation-driven solid-phase extrusion device and method for preparing alloy bar by using device through one-step method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002316209A (en) * 2001-04-20 2002-10-29 Sanyo Special Steel Co Ltd Method for preventing twist of outside deformed material by hot extrusion
CN1630565A (en) * 2002-02-15 2005-06-22 古河Sky株式会社 Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device
CN101020200A (en) * 2006-02-14 2007-08-22 江苏森威集团有限责任公司 Precise forging process with composite radial and back extrusion
CN101875068A (en) * 2010-03-25 2010-11-03 昆山凯意工模具配套有限公司 Cold extrusion molding mould of part
CN102615133A (en) * 2012-03-27 2012-08-01 上海交通大学 Backpressure equal-channel angular extruding mould

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002316209A (en) * 2001-04-20 2002-10-29 Sanyo Special Steel Co Ltd Method for preventing twist of outside deformed material by hot extrusion
CN1630565A (en) * 2002-02-15 2005-06-22 古河Sky株式会社 Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device
CN101020200A (en) * 2006-02-14 2007-08-22 江苏森威集团有限责任公司 Precise forging process with composite radial and back extrusion
CN101875068A (en) * 2010-03-25 2010-11-03 昆山凯意工模具配套有限公司 Cold extrusion molding mould of part
CN102615133A (en) * 2012-03-27 2012-08-01 上海交通大学 Backpressure equal-channel angular extruding mould

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张水忠: "《挤压工艺及模具设计》", 28 February 2009 *
田福祥: "钢碗精密温挤压新型模具", 《模具制造》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN108838226A (en) * 2018-07-13 2018-11-20 中国航发北京航空材料研究院 One kind being used for the hot backward extrusion method of titanium alloy cup shell
CN111151760A (en) * 2020-01-20 2020-05-15 哈尔滨工业大学 Deformation-driven solid-phase extrusion device and method for preparing alloy bar by using device through one-step method

Similar Documents

Publication Publication Date Title
CN100500320C (en) Device for improving forming limit of hydromechanical drawing of sheet material and method thereof
CN101767153B (en) Composite forming die
CN103567340A (en) Novel precision forging technology of straight toothed spur gear for automobile and mold
CN103212635B (en) Car transmission synchronizer gear ring fine blanking and deep drawing combined forming process and mold
CN103586299A (en) High-alloy steel flexible wheel blank warm-extrusion technology used for harmonic wave decelerator
CN103406477A (en) One-time-closing multidirectional repeated local load forming method
CN102172734B (en) Rolling blank making method for automobile transmission gear ring
CN107952859A (en) A kind of detachable hydraulic expanding die for being used to manufacture S type metal bellows
CN103706745B (en) The preparation method of damping axle sleeve
CN110508737A (en) A kind of hub extrusion manufacturing process
CN103990753A (en) Oil pump gear shaft precision-forging forming mold and forming method
CN106077382A (en) A kind of high intensity 20CrMoNi duplex spur gear precise forming process and mould
CN105108460B (en) Manufacturing method of cam plate with no need for grinding of outer contour
CN204074782U (en) The device of external tooth in gear part can be extruded simultaneously
CN102554023B (en) Pipe local reducing method
CN102179463B (en) Blank-making rolling method for conical hub of automotive transmission
CN103658213A (en) Novel extrusion method for efficiently machining straight spur gear
CN203711731U (en) Closed extrusion finish forging forming die for cam shaft
CN206316303U (en) The small gear ring radial direction wedge pressure mould of combination gear
CN103658500A (en) Precise warm forging one-time forming new technology of straight tooth cylinder inner gear
CN107876672A (en) A kind of flanged ball valve end cap rolling ring manufacturing process
CN106040767B (en) The warm-extrusion forming technique and mould of a kind of high intensity fork universal joint
CN109465368B (en) Blank-making forming method for large-section-ratio complex-shape mutation shaft aluminum alloy forging
CN205914694U (en) Assembling die of gear shaft is made in loose tooling forging
CN102773299A (en) Cross-axle cold extrusion die

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140219