WO2007067303A2 - Procede de formage d'une piece - Google Patents

Procede de formage d'une piece Download PDF

Info

Publication number
WO2007067303A2
WO2007067303A2 PCT/US2006/043869 US2006043869W WO2007067303A2 WO 2007067303 A2 WO2007067303 A2 WO 2007067303A2 US 2006043869 W US2006043869 W US 2006043869W WO 2007067303 A2 WO2007067303 A2 WO 2007067303A2
Authority
WO
WIPO (PCT)
Prior art keywords
blank
bearing seat
forming
die
forming die
Prior art date
Application number
PCT/US2006/043869
Other languages
English (en)
Other versions
WO2007067303A3 (fr
Inventor
Yahya Hodjat
Original Assignee
The Gates Corporation
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 The Gates Corporation filed Critical The Gates Corporation
Publication of WO2007067303A2 publication Critical patent/WO2007067303A2/fr
Publication of WO2007067303A3 publication Critical patent/WO2007067303A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/261—Making other particular articles wheels or the like pulleys

Definitions

  • the invention relates to a method of forming a part by using a forming die to sequentially reduce the diameter of the part by pressing the part through a multi-diameter forming die in a single pass while solely pressing an edge in order to urge it through the forming die.
  • US Patent 6,505,490 by Hodjat and Roes which discloses a method of forming a sheet metal cup without using a mandrel .
  • a cup shaped blank is first produced having a relief on a rim or outer circumference. The blank is clamped in the spinning machine. The relief controls and facilitates the bending process, creating a uniform curve at a predetermined bending point.
  • a forming roller is engaged with rim, and is moved progressively parallel with an axis of rotation. As the forming roller moves, the rim is progressively bent from an orientation normal to an axis of rotation to a position parallel to the axis of rotation. The fully formed rim can then be punched to accommodate a bearing or shaft . This allows a small radius pulley to be formed without use of a mandrel .
  • the primary aspect of the invention is to provide a method of forming a part by using a forming die to sequentially reduce the diameter of the part by pressing the part through a multi-diameter forming die in a single pass while solely pressing the edge of the part to urge it through the forming die.
  • the invention comprises a method of forming a part comprising the steps of forming a round sheet metal blank, pressing the sheet metal blank through a first forming die to form a blank, the blank having a bearing seat, the bearing seat having a bearing seat edge, pressing the blank through a second forming die using a mandrel applying a pressure to the bearing seat edge, and sequentially reducing the diameter of the blank by a single pass through the second forming die.
  • Fig. 1 is a cross-sectional view showing press formation of an idler blank.
  • Fig. 2 is a cross-sectional view of the sizing die.
  • Fig. 3 is detail 2 from Fig. 2.
  • the invention comprises a method of manufacturing a part by press forming.
  • the inventive process can be accomplished in one or two operations, but for simplicity, a two step operation is described here.
  • the two step press operations can be combined into one if so desired.
  • the first step is to manufacture a part, such as an idler, with the required bearing seat design but having a larger belt bearing surface diameter which is large enough to allow a minimum mandrel diameter, for instance
  • FIG. 1 (a) a round sheet metal blank 10 is manufactured using methods known in the art, for example, by stamping.
  • Figures 1 (b) thru 1 (d) depict the formation of an idler blank by pressing the blank 15 through a first forming die using methods known in the art . Pressing blank 15 through a forming die creates a belt bearing surface 16 having an interim stepped shape due to the progressive reduction in diameter, see Fig. 3. Excess material forms a flange 17 around an outer edge of the blank 15.
  • bearing seat 18 and belt bearing surface 16 are substantially parallel. They are also parallel to the axis of rotation of the idler A-A. Bearing seat 18 engages an outer race of a bearing such as a ball bearing. The ball bearing is pressed into the bearing seat 18.
  • Fig. 1 (e) excess material 19 formed in Fig. 1 (d) has been removed by a cutting operation known in the art.
  • Flange 17 is removed by a known cutting operation.
  • Finished blank 15 is shown in Fig. l(f) with the final form of the bearing seat 18 and belt bearing surface 16.
  • the radial distance, or gap, between the bearing seat 18 and the belt bearing surface 16 is denoted "G" .
  • the width of gap (G) is a function of the thickness of the mandrel used to press the blank 15 though the forming die.
  • the second step is sequentially reducing the belt bearing surface diameter in a sizing die.
  • Fig. 2 is a cross-sectional view of the sizing die apparatus.
  • Sizing die apparatus 100 comprises in part a mandrel 101 and a forming die 102.
  • Blank 15 is first put onto die 103 and pressed by the mandrel 101 to fully engage die 103 with bearing seat 18.
  • die 103 is disposed in the position that will be later occupied by a ball bearing.
  • Mandrel 101 comes into contact with die 103.
  • Mandrel 101 presses blank 15 which causes spring 107 to compress.
  • Blank 15 is then pressed further until belt bearing surface 16 engages forming die 102.
  • bearing seat edge 180 comprises the bearing seat edge of blank 15 which is formed by the process described in Fig. 1.
  • the final dimension of gap G is not limited by the thickness of a mandrel that would otherwise be engaged with the inner surface 20, thereby occupying the gap G between the belt bearing surface 16 and the bearing seat 18.
  • the width of gap G is then only limited by the diameter of the rings as described in Fig. 3. This process allows a small gap idler to be fabricated having reduced weight and cost.
  • Moveable member 104 is slidingly engaged with cavity 106 in base 105.
  • Spring 107 resists movement of moveable member 104 in direction M+ . Once the idler is fully formed spring 107 has a spring rate sufficient to force member 104, die 103 and fully formed idler blank 15 in direction M-, whereby fully formed idler 15 is ejected from forming die 102. Once idler 15 and die 103 are ejected from forming die 102, die 103 is pressed from the bearing seat 18 using known means.
  • Fig. 3 depicts the various diameters Dl, D2, D3.
  • D3 is less than D2 , which is less than Dl.
  • Each diameter, or ring sequentially reduces the diameter of the blank 15 by roughly about 1 mm. The amount of reduction depends on many factors including the thickness of the metal and the finished diameter of the blank as compared to the initial diameter of the idler blank.
  • the diameters or rings can be stacked up one on top of one another to form as many sequential stages of reduction as required.
  • the idler diameter (and consequently the gap width) can be sequentially reduced to the desired value by choosing the proper number of rings to accommodate the interim reduction steps.
  • Gap G2 is significantly less than gap G.
  • Gap G2 is significantly less than a gap created using the prior art mandrel method, namely, because it eliminates the need for pressing blank 15 through forming die 102 with a mandrel that is engaged with the inner surface 20 of the blank as shown in Fig. 1.
  • This new invention reduces the cost, process complexity, and capital equipment requirements comparing with the prior art.
  • the inventive method reduces the weight in comparison with prior art processes of machining idlers from solid, powder metal, forged, or cast parts.

Abstract

La présente invention concerne un procédé de formage d'une pièce consistant à former un flan de tôle rond, à presser le flan de tôle dans une première matrice de formage pour produire un flan, le flan ayant une surface d'appui de coussinet dotée d'un bord d'appui, à presser le flan dans une seconde matrice de formage à l'aide d'un mandrin appliquant une pression au bord d'appui, et à réduire successivement le diamètre du flan par un seul passage dans la seconde matrice de formage.
PCT/US2006/043869 2005-12-06 2006-11-10 Procede de formage d'une piece WO2007067303A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/295,802 2005-12-06
US11/295,802 US20070125147A1 (en) 2005-12-06 2005-12-06 Method of forming a part

Publications (2)

Publication Number Publication Date
WO2007067303A2 true WO2007067303A2 (fr) 2007-06-14
WO2007067303A3 WO2007067303A3 (fr) 2009-09-03

Family

ID=37831415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/043869 WO2007067303A2 (fr) 2005-12-06 2006-11-10 Procede de formage d'une piece

Country Status (2)

Country Link
US (1) US20070125147A1 (fr)
WO (1) WO2007067303A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112170648A (zh) * 2020-09-15 2021-01-05 燕山大学 一种双层筒形零件正反拉深成形模具和方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2557845C2 (ru) 2010-02-04 2015-07-27 Краун Пэкэджинг Текнолоджи, Инк. Изготовление жестяной банки
IT1399053B1 (it) * 2010-03-16 2013-04-05 Agla S R L Metodo e dispositivo per la realizzazione di una puleggia per applicazioni autoveicolistiche
WO2011128347A1 (fr) * 2010-04-12 2011-10-20 Crown Packaging Technology, Inc. Fabrication de récipients en métal
JP5969234B2 (ja) * 2012-03-23 2016-08-17 アイシン・エィ・ダブリュ株式会社 自動変速機のシリンダ部材製造方法
ITTO20130533A1 (it) * 2013-06-28 2014-12-29 Agla Power Transmission S P A Metodo per la realizzazione di una puleggia per applicazioni autoveicolistiche

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB223430A (en) * 1923-12-01 1924-10-23 Thomas Andrew Hayward Improvements in or relating to multiple drawing presses
DE2014039A1 (en) * 1970-03-24 1971-10-07 Radtke, Kurt, 3500 Kassel Hollow closure bolts
US5761949A (en) * 1997-02-19 1998-06-09 Trans-Matic Manufacturing Company Deep-drawn stamping process including side piercing
US6505490B2 (en) * 2001-02-28 2003-01-14 The Gates Corporation Method of forming a sheet metal cup without a mandrel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370878A (en) * 1981-02-09 1983-02-01 Gulf & Western Manufacturing Company Workpiece ejector system for presses
JPH0712509B2 (ja) * 1990-04-17 1995-02-15 日本精工株式会社 アウトサイドリングの製造方法
JP3281175B2 (ja) * 1994-04-18 2002-05-13 株式会社東芝 プレス成形装置
WO2004103601A1 (fr) * 1999-07-22 2004-12-02 Jiro Iwaya Corps forme a la presse et procede de formage a la presse
DE10054399A1 (de) * 2000-11-02 2002-06-27 Forschungsges Umformtechnik Verfahren und Vorrichtung zur Herstellung eines Werkstückes mit Innenverzahnung, insbesondere eines Hohlrades

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB223430A (en) * 1923-12-01 1924-10-23 Thomas Andrew Hayward Improvements in or relating to multiple drawing presses
DE2014039A1 (en) * 1970-03-24 1971-10-07 Radtke, Kurt, 3500 Kassel Hollow closure bolts
US5761949A (en) * 1997-02-19 1998-06-09 Trans-Matic Manufacturing Company Deep-drawn stamping process including side piercing
US6505490B2 (en) * 2001-02-28 2003-01-14 The Gates Corporation Method of forming a sheet metal cup without a mandrel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112170648A (zh) * 2020-09-15 2021-01-05 燕山大学 一种双层筒形零件正反拉深成形模具和方法
CN112170648B (zh) * 2020-09-15 2021-08-31 燕山大学 一种双层筒形零件正反拉深成形模具和方法

Also Published As

Publication number Publication date
US20070125147A1 (en) 2007-06-07
WO2007067303A3 (fr) 2009-09-03

Similar Documents

Publication Publication Date Title
EP2195129B1 (fr) Procede et dispositif permettant la fabrication de rondelles de verrouillage
EP2103826B1 (fr) Procédé de fabrication pour bague extérieure de roulement
US20070125147A1 (en) Method of forming a part
EP2022995B1 (fr) Roulement à aiguilles avec joint d'étanchéité et son procédé de fabrication
US7530251B2 (en) Annular component fabricating method, die for use in such fabricating method and annular component fabricated thereby
WO1993013891A1 (fr) Procede pour former une partie bosselee dans un materiau en tole et procede pour transformer une tole en poulie
US9441672B2 (en) Method for producing holder and holder
CN101102858A (zh) 用于对离合器盘和最终产品进行冲压和去毛刺的装置和方法
JP2009536268A (ja) 歯車を製造する方法
US4313323A (en) Method for manufacturing poly-V pulleys
JP2008264821A (ja) クラッチ用プーリの製造方法
JP4941599B2 (ja) シールリング付シェル型ニードル軸受のシールリングの製造方法
JP2873359B2 (ja) スクロール流体機械におけるリテーナリング並びにその製造方法
JP5446785B2 (ja) リング素材の製造方法
US20130205593A1 (en) Manufacturing method for bearing outer ring
JPS6137012B2 (fr)
GB1594625A (en) Bearings
JPH11285772A (ja) プレス成形プーリの製造方法および装置
JP3565939B2 (ja) プーリーの製造方法
EP2826571B1 (fr) Procédé de fabrication d'une poulie pour applications dans des véhicules à moteur
JP3746197B2 (ja) 板金製ポリｖプーリの製造方法
KR102270336B1 (ko) 주름형 벨트풀리의 제조장치
JPS59110440A (ja) ポリ溝付プ−リ外環の製造方法
JP2016124026A (ja) 歯付きカップの成形方法
JP2023092179A (ja) 管状部品の製造方法、及びプレス装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06844325

Country of ref document: EP

Kind code of ref document: A2