US20030024345A1 - Crankshaft damper with integral pulse ring and method - Google Patents

Crankshaft damper with integral pulse ring and method Download PDF

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Publication number
US20030024345A1
US20030024345A1 US10/209,346 US20934602A US2003024345A1 US 20030024345 A1 US20030024345 A1 US 20030024345A1 US 20934602 A US20934602 A US 20934602A US 2003024345 A1 US2003024345 A1 US 2003024345A1
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US
United States
Prior art keywords
ring
damper
forming
profile
roller
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.)
Abandoned
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US10/209,346
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English (en)
Inventor
Yahya Hodjat
Marc Cadarette
John Roes
Don Wilson
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to US10/209,346 priority Critical patent/US20030024345A1/en
Publication of US20030024345A1 publication Critical patent/US20030024345A1/en
Priority to US10/970,159 priority patent/US7055243B2/en
Abandoned legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/124—Elastomeric springs
    • F16F15/126—Elastomeric springs consisting of at least one annular element surrounding the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/366—Pulleys with means providing resilience or vibration damping
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49453—Pulley making
    • Y10T29/49455—Assembly
    • Y10T29/49456—Assembly with shaping
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49453—Pulley making
    • Y10T29/4946—Groove forming in sheet metal pulley rim
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49471—Roll forming
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2121—Flywheel, motion smoothing-type
    • Y10T74/2131—Damping by absorbing vibration force [via rubber, elastomeric material, etc.]

Definitions

  • the invention relates to crankshaft dampers and more particularly to crankshaft dampers having an integral pulse ring and a method of making same.
  • Reciprocating internal combustion engines generally comprise, among other things, a crankshaft for power output.
  • Engine accessory components are driven by a belt connected to a pulley on one end of the crankshaft.
  • the crankshaft vibrates in various modes due to the reciprocating nature of the engine. Such vibration can adversely affect operation and long-term reliability. Consequently, viscoelastic dampers may be incorporated into crankshaft pulleys to damp crankshaft vibration.
  • crankshaft damper generally comprises an inner hub and an outer pulley.
  • the outer pulley is generally attached to the inner hub by a viscoelastic elastomeric ring.
  • crankshaft dampers may include a pulse ring or timing gear for engine ignition timing.
  • the pulse ring rotates in front of a sensor attached to the engine.
  • the pulse ring generally includes a gap as a reference point, for example, to indicate TDC for cylinder one.
  • the pulse ring is generally attached to the crankshaft damper outer pulley.
  • the pulse ring is attached to the inner hub, which is then rigidly assembled on the crankshaft.
  • prior art pulse rings comprise a separate part that must be press fit, welded or otherwise attached using other means to the inner hub.
  • crankshaft damper manufactured by Freudenberg NOK having an inner hub and an outer ring joined by an elastomeric ring. A pulse ring is press fit into the inner hub.
  • crankshaft damper having an integral pulse ring.
  • crankshaft damper having an integral pulse ring whereby the integral pulse ring is flow formed on an inner hub.
  • the present invention meets these needs.
  • crankshaft damper having an integral pulse ring.
  • Another feature of the invention is to provide a crankshaft damper having an integral pulse ring whereby the integral pulse ring is flow formed on an inner hub.
  • the invention comprises an improved crankshaft damper having an integral pulse ring.
  • the crankshaft damper comprises an inner hub and outer pulley with an elastomeric connecting member between each.
  • the elastomeric member dampens a crankshaft vibration.
  • the integral pulse ring is manufactured as part of the inner hub by flow forming a sheet metal blank.
  • FIG. 1 is a cross-sectional view of the inventive crankshaft damper.
  • FIG. 2 is a cross-sectional view of the inventive crankshaft damper.
  • FIG. 3 is a front elevation view of the inventive crankshaft damper.
  • FIGS. 4 a , 4 b , 4 c , 4 d , 4 e , 4 f , 4 g are half cross-sectional views of a fabrication sequence.
  • FIGS. 5 a , 5 b , 5 c , 5 d are half cross-sectional views of a fabrication process.
  • FIG. 6 is a cross-sectional perspective view of the inner hub of the inventive damper.
  • FIG. 7 a , 7 b , 7 c are cross-sectional views of the formation of a hub having a closed bore.
  • FIGS. 8 a , 8 b , 8 c , 8 d , 8 e , 8 f , 8 g , 8 h , 8 i , 8 j are half cross-sectional views of a fabrication sequence.
  • FIGS. 9 a , 9 b , 9 c are half cross-sectional views of a fabrication process.
  • the improvements of the inventive damper over the prior art are many fold.
  • the inventive damper allows much better timing accuracy to be achieved using the flow formed integral pulse ring as opposed to two separate parts as in the prior art. This significantly improves the accuracy of the location of the pulse ring relative to the inner hub and the pulley, both radially and laterally. This in turn improves the accuracy of determining the position of the crankshaft for timing purposes. Further, a more accurate gap dimension for containing the connecting member is achieved between the ring and the pulley; as is better run out and concentricity.
  • the inventive damper is also stronger than the prior art construction.
  • the inventive pulse ring is not subject to detaching from the inner hub as in the prior art. With respect to fabrication, the inventive damper has fewer pieces requiring fewer assembly operations as compared to the prior art. Since the inventive damper is flow formed the quality of the pulse ring is superior to that of the manufactured pulse rings of the prior art.
  • FIG. 1 is a cross-sectional view of the inventive crankshaft damper.
  • the inventive crankshaft damper 100 is formed of metallic material and comprises an inner member or hub 110 and outer member or ring 120 .
  • Flexible connecting member 14 is fit between inner hub 110 and outer ring 120 .
  • connecting member 14 comprises a viscoelastic, elastomeric ring.
  • Elastomeric ring 14 may comprise, but be not limited to SBR, NBR, HNBR, EPDM, VAMAC, EVM and blends of the above.
  • Inner hub 110 comprises center hub 10 .
  • Center hub 10 comprises bore 11 into which a crankshaft (not shown) is inserted.
  • Inner hub 110 also comprises web 12 to which interface ring 13 is formed.
  • Line C-C is a centerline of the inventive damper as well as an axis of rotation. C-C aligns with a crankshaft centerline (not shown).
  • C-C is also depicted in FIG. 2, FIGS. 4 a - 4 g , FIGS. 5 a - 5 d , FIGS. 8 a - 8 j and FIGS. 9 a - 9 c.
  • Pulse ring 17 is flow formed integrally with inner hub 110 . Pulse ring 17 extends substantially normal to an axis of rotation, C-C, of the inventive damper. An outer perimeter of pulse ring 17 comprises tabs or teeth 18 . Teeth 18 extend radially from pulse ring 17 . In operation, when the inventive damper is rotating on a crankshaft, teeth 18 are detected by a sensor on an engine (not shown) for engine ignition timing.
  • Outer ring 120 comprises pulley 15 .
  • Pulley 15 is engaged with inner hub 110 by connecting member 14 .
  • outer ring 120 is cast in a fashion known in the art.
  • Outer interface ring surface 19 , connecting member 14 and pulley inner surface 20 may have any suitable profile, including that of an arcuate curve.
  • Surface 19 and surface 20 and member 14 may have other cooperating profiles as may be required by a user, including nodes and undulations.
  • Surface 19 and surface 20 otherwise have a substantially cylindrical form into which the noted profiles are incorporated, see FIG. 3.
  • Pulley 15 comprises a belt bearing surface having a multi-ribbed profile 16 .
  • the belt bearing surface 16 may also have a toothed profile or a v-belt profile.
  • Plane P 1 of web 12 is offset distance D 1 from a belt bearing surface plane P 2 -P 2 .
  • This cantilever construction allows belt bearing surface 16 to be recessed toward an engine thereby requiring less clearance space in front of an engine.
  • FIG. 2 is a cross-sectional view of the inventive crankshaft damper.
  • Outer ring 130 comprising pulley 25 is spun or flow formed in this embodiment in a fashion known in the art.
  • Belt bearing surface 26 has a multi-ribbed profile and is spun or flow formed into the pulley 25 outer surface.
  • the belt bearing surface 16 may also have a toothed profile or a v-belt profile.
  • Surface 30 cooperates with surface 19 . All other components are as described in FIG. 1.
  • Plane P 1 of web 12 is offset distance D 1 from a belt bearing surface plane P 2 -P 2 .
  • This cantilever construction allows belt bearing surface 26 to be recessed toward an engine thereby requiring less clearance space in front of an engine.
  • FIG. 3 is a front elevation view of the inventive crankshaft damper. Teeth 18 extend about a perimeter of pulse ring 17 . Outer ring 120 is engaged with inner hub 110 by member 14 . A timing means or gap 30 in teeth 18 comprises a timing reference point between teeth 18 to be detected by a sensor (not shown). Gap 30 may comprise any form of discontinuity in teeth 18 that may be detected by a sensor. Teeth 18 extend beyond an outer perimeter of profile 16 .
  • FIGS. 4 a , 4 b , 4 c , 4 d , 4 e , 4 f , 4 g are half cross-sectional views along axis C-C of a fabrication sequence.
  • FIG. 4 a depicts a blanking step. Sheet metal blank 1000 is stamped or cut in a known fashion into a circular form. It is then mounted in a rotating mandrel.
  • FIG. 4 b shows the closed bore center hub 10 as spun by processes know in the art, including the method disclosed in U.S. Pat. No. 5,987,952 to Kutzscher et al. incorporated herein by reference in its entirety.
  • FIG. 7 a , 7 b , 7 c are cross-sectional views of the formation of a hub having a closed or blind bore. Referring to FIG. 7 a , the hub is formed by spinning annular disc or blank 1000 supported by rotating mandrel M.
  • Roller RA having forming profile RA 1 is moved radially inwardly in direction SR against a side 1010 of blank 1000 , thereby displacing a portion 64 of blank 1000 inwardly against a mandrel to form hub 10 .
  • Roller RB holds an outer perimeter of blank 1000 in place against mandrel M during the forming process.
  • Roller RB rolls on blank 1000 and mandrel M as mandrel M rotates.
  • FIG. 7 b shows the further progression of roller RA in direction SR 2 thereby moving portion 64 inward toward mandrel post MP.
  • FIG. 7 c shows the fully formed hub 10 .
  • roller RC is shown applying the final shape top hub 10 .
  • Roller RC has a different forming profile RC 1 than that of roller RA in order to properly form the cylindrical shape of finished hub 10 .
  • Bore 11 is a blind or closed bore in that diameter D 1 is greater than diameter D 2 , see FIG. 1.
  • a fastener such as a bolt may then be inserted through hole 11 a to fasten the inventive damper to a shaft (not shown).
  • the inventive damper may also instead use a hub not having a blind bore, using a key to secure the damper to a crankshaft (not shown).
  • the described methods of fastening the damper to a shaft are intended as examples and are not meant to limit the manner in which the damper may be fastened to a shaft.
  • FIG. 4 c shows formation of the interface ring 13 and pulse ring 17 . This process is further described in FIGS. 5 a through 5 d.
  • FIG. 4 d shows machining performed on the formed surfaces as known the art.
  • the rubber interface surface 19 is machined to a predetermined finish for proper engagement with the elastomeric member 14 .
  • a suitable surface finish may also be applied by known processes, such as by painting or coating with epoxy.
  • FIG. 4 e shows the piercing step. Teeth 18 and web openings 27 , see FIG. 3, are formed by piercing. Piercing includes any known stamping process by which metal is removed from the inner hub 110 to from web openings 27 and from the pulse ring 17 to form teeth 18 . Teeth 18 may also be spun or flow formed in a known fashion.
  • FIG. 4 f shows outer ring 120 engaged to interface ring 13 with the connecting member elastomeric ring 14 .
  • outer ring 120 and inner hub 110 are held in relative fixed positions.
  • Member 14 is then pressed between ring 120 and hub 110 .
  • Member 14 is in a somewhat compressed state between the inner hub and outer ring, in a range of approximately >0% to approximately 50% compression of a thickness, in order to facilitate engagement of member 14 with outer ring 120 and inner hub 110 .
  • An adhesive may be used in a known fashion to secure member 14 between the inner hub 110 and outer ring 120 .
  • FIG. 4 g shows a final machining step to complete the center hub 10 in a fashion known in the art. This may include application of a predetermined surface finish by machining, painting or coating.
  • FIGS. 5 a , 5 b , 5 c , 5 d are half cross-sectional views along axis C-C of a fabrication process.
  • the form shown in FIG. 4 b is further formed by a roller R 1 having forming profile RP 1 moving radially inward in direction DR 1 to form a gathered portion 1050 of blank 1000 .
  • Gathered portion 1050 is accumulated against mandrel section M 1 and M 2 .
  • Gathered portion 1050 is then split by roller R 2 having rolling profile RP 2 moving radially inwardly in direction DR 2 while portion 1050 is simultaneously spread to form lobe 1060 , see FIG. 5 b .
  • Lobe 1060 is collected against mandrel section M 2 .
  • lobe 1060 is stretched by roller R 3 moving in direction DR 3 and then in direction DR 4 .
  • Roller R 3 having rolling profile RP 3 further forms lobe 1060 into the rough shape of the interface ring 1300 and pulse ring 1700 against mandrel section MR 2 , see FIG. 5 c .
  • An inner surface 1301 of lobe 1060 is supported by a mandrel section MR 2 during the stretching step in FIG. 5 c .
  • final stretch forming using roller R 4 having rolling profile RP 4 gives the final shape to interface ring 13 and pulse ring 17 , including surface 19 , see FIG. 4 d .
  • Roller R 4 moves in direction DR 5 to form a flat surface 1701 for pulse ring 17 , thereby forming the final radially extending member shape of ring 17 , see FIG. 5 d.
  • FIG. 6 is a cross-sectional perspective view of the inner hub of the inventive damper.
  • Inner hub 110 comprises center hub 10 .
  • Center hub 10 comprises bore 11 into which a crankshaft (not shown) may be inserted.
  • Inner hub 110 also comprises web 12 to which interface ring 13 is formed.
  • Pulse ring 17 is formed integrally with inner hub 110 as described herein.
  • An outer perimeter of pulse ring 17 comprises tabs or teeth 18 . In operation, teeth 18 as well as gap 30 are detected by a sensor on an engine (not shown).
  • FIGS. 8 a , 8 b , 8 c , 8 d , 8 e , 8 f , 8 g , 8 h , 8 i , 8 j are half cross-sectional views along axis C-C of a fabrication sequence.
  • FIG. 8 a depicts a blanking step. Sheet metal blank 2000 is stamped or cut in a known fashion into a circular form. It is then mounted in a rotating mandrel.
  • FIG. 8 b shows the closed bore center hub 10 as spun by processes know in the art, including the method disclosed in U.S. Pat. No. 5,987,952 to Kutzscher et al. incorporated herein by reference in its entirety.
  • FIG. 7 a , 7 b , 7 c are cross-sectional views of the formation of a hub having a closed or blind bore as described elsewhere herein.
  • Fog. 8 c shows press forming of the partially formed disc. Offset 2001 is pressed by known processes into the damper web 12 .
  • FIG. 8 d , 8 e and 8 f shows formation of the interface ring 13 and pulse ring 17 and are more fully described in FIG. 9 a , 9 b , and 9 c.
  • FIG. 8 g shows machining performed on the formed surfaces as known the art.
  • the rubber interface surface 19 is machined for proper engagement with the elastomeric member 14 .
  • a predetermined surface finish may also be applied by known processes, such as by painting or coating with epoxy.
  • FIG. 8 h shows the piercing step.
  • Teeth 18 and web openings 27 are formed by piercing.
  • Piercing includes any known stamping process by which metal is removed from the inner hub 110 to from web openings 27 and from the pulse ring 17 to form teeth 18 .
  • Teeth 18 may also be spun formed in a known fashion.
  • FIG. 8 i shows outer ring 120 engaged to interface ring 13 with the connecting member elastomeric ring 14 .
  • outer ring 120 and inner hub 110 are held in relative fixed positions.
  • Member 14 is then pressed between ring 120 and hub 110 .
  • Member 14 is in a somewhat compressed state between the inner hub and outer ring, in a range of approximately >0% to approximately 50%, in order to facilitate engagement between outer ring 120 and inner hub 110 .
  • An adhesive may be used in a known fashion to secure member 14 between the inner hub 110 and outer ring 120 .
  • FIG. 8 j shows a final machining step to complete the center hub 10 in a fashion known in the art. This may include application of a suitable surface finish by machining or by painting.
  • FIGS. 9 a , 9 b , 9 c are half cross-sectional views of a fabrication process.
  • Damper blank 2000 shown in FIG. 8 c is clamped between rotating mandrel sections M 3 and M 4 .
  • the form shown in FIG. 8 c is then further formed by roller R 5 having forming profile RP 5 moving substantially radially inward in direction DR 6 to form a radius portion 2002 of blank 2000 .
  • Arcuate radius portion 2002 is formed against mandrel section M 4 by action of roller R 5 .
  • Radius portion 2002 is then stretched by roller R 5 having rolling profile RP 5 moving substantially radially outwardly in direction DR 7 to create a rough form of pulse ring 17 . Referring to FIG.
  • roller R 5 moving in direction DR 8 further completes pulse ring 17 and the rough shape 2003 of the interface ring 13 against mandrel sections MR 3 and M 4 .
  • roller R 6 with rolling profile RP 6 moves substantially radially inward in direction DR 9 to further flatten pulse ring 17 and to give final form to interface ring 13 , and in particular surface 19 , see FIG. 8 g.
  • offset 2001 engages interface ring at a position that is substantially centered upon and radially aligned with a belt bearing surface, 16 and 26 , see FIGS. 1, 2, 8 i and 8 j .
  • This serves to illustrate the versatility available with this method for positioning a belt bearing surface relative to a damper web. This in turn allows a user to design a flow formed damper to optimize use of available space in an engine compartment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Pulleys (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
US10/209,346 2001-08-03 2002-07-30 Crankshaft damper with integral pulse ring and method Abandoned US20030024345A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/209,346 US20030024345A1 (en) 2001-08-03 2002-07-30 Crankshaft damper with integral pulse ring and method
US10/970,159 US7055243B2 (en) 2001-08-03 2004-10-21 Crankshaft damper with integral pulse ring and method

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US31003401P 2001-08-03 2001-08-03
US10/209,346 US20030024345A1 (en) 2001-08-03 2002-07-30 Crankshaft damper with integral pulse ring and method

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WO2008128513A1 (de) * 2007-04-18 2008-10-30 Neumayer Tekfor Holding Gmbh Verbundkörper
US20090078078A1 (en) * 2007-09-26 2009-03-26 Suhale Manzoor Decoupled vibration damper
US20090078079A1 (en) * 2007-09-26 2009-03-26 Hillsdale Automotive, Llc Decoupled vibration damper
CN102728688A (zh) * 2011-04-01 2012-10-17 北京超代成科技有限公司 一种金属板料底面单边压型的无切削加工方法及装置
US20170248219A1 (en) * 2016-02-26 2017-08-31 Ford Global Technologies, Llc Damper cover and attachment interface for a crankshaft damper

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KR100647718B1 (ko) 2002-04-25 2006-11-17 한라공조주식회사 풀리 성형방법 및 장치
KR100746718B1 (ko) * 2004-06-16 2007-08-06 주식회사 만도 자동차용 조향장치의 토오크센서
US7437808B2 (en) * 2005-02-14 2008-10-21 The Gates Corporation Method of forming a metal matrix component
JP4865616B2 (ja) * 2007-03-28 2012-02-01 本田技研工業株式会社 ベルト式無段変速機
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CA2454461C (en) 2008-12-09
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WO2003014596A1 (en) 2003-02-20
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ATE380308T1 (de) 2007-12-15
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CN100335814C (zh) 2007-09-05
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DE60223924T2 (de) 2008-10-23
EP1412656A1 (en) 2004-04-28

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