US3447395A - Camshaft - Google Patents

Camshaft Download PDF

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Publication number
US3447395A
US3447395A US646283A US3447395DA US3447395A US 3447395 A US3447395 A US 3447395A US 646283 A US646283 A US 646283A US 3447395D A US3447395D A US 3447395DA US 3447395 A US3447395 A US 3447395A
Authority
US
United States
Prior art keywords
camshaft
cams
fastening means
driving wheel
cam
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.)
Expired - Lifetime
Application number
US646283A
Other languages
English (en)
Inventor
Henri Charles Edouard Latour
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.)
Motosacoche SA
Original Assignee
Motosacoche SA
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 Motosacoche SA filed Critical Motosacoche SA
Application granted granted Critical
Publication of US3447395A publication Critical patent/US3447395A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • 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
    • F16H53/00—Cams or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • 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
    • F16H53/00—Cams or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F16H53/025—Single-track cams for single-revolution cycles; Camshafts with such cams characterised by their construction, e.g. assembling or manufacturing features
    • 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
    • F16H55/02—Toothed members; Worms
    • F16H55/14—Construction providing resilience or vibration-damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/026—Gear drive
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/18—Camshafts
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/023—Shafts; Axles made of several parts, e.g. by welding
    • 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
    • Y10T74/2101—Cams

Definitions

  • a camshaft of the tubular type rotating on a fixed axle especially suitable for an internal combustion engine includes separately made sintered cams.
  • the cams are fixed in invariable positions relative to one another on the shaft by means such as slots and tenons on the terminal portions of their axes.
  • the toothed driving wheel may be similarly made for attachment to the terminal portion of an end cam.
  • the wheel may include a plastics overcasting on its teeth.
  • a camshaft of the tubular type burning around a fixed axle particularly for an internal combustion engine wherein at least each cam is constituted by a separate part obtained by sintering, angular ⁇ fastening means of the cams one with respect to the other'being arranged at the ends of each part to enable anFinvariable assembly of the" cams one after the other.
  • FIG. 1 is a schematic view in elevation and in crosssection of one embodiment of a camshaft according to the invention.
  • FIG. 2 is an end view of the camshaft of FIG. 1.
  • this camshaft is of the tubular type turning around a fixed axle I mounted in an engine block or crank case, especially, for example, in an internal combustion engine.
  • the camshaft shown comprises, in this example, only two cams 2 and 3 driven by a toothed wheel 4.
  • Each of these cams 2 and 3 constitutes a separate part obtained by sintering.
  • these fastening means comprise a group of slots 5 and of tenons 6 arranged at the ends of the members 2 and 3.
  • the dimensions of the slots 5 and of the tenons 6 are selected so that their reciprocal engagement can only be effected in a particular angular position.
  • the upper slot 5 is narrower than the other slots and only one tenon of corresponding dimension, arranged on the other part, can be engaged in this narrow slot 5, which ensures a single possible angular position of one cam 2 with respect to the other cam.
  • the toothed driving wheel 4 of the camshaft is also obtained by sintering and forms itself a special member provided also with the group of slots 5 and tenons 6 which is adjacent to it.
  • the latter has an overcasting 7 of plastics material to form the contact surface of its teeth 8.
  • grooves 9 and 10 are channeled in the faces of the wheel 4 to ensure a good anchorage of the plastics overcasting material on the wheel 4.
  • Angular fastening means for the different parts 2, 3, 4 are machined along the respective sides ensuring a force fit of the parts 2, 3, 4 one in the other, so as to avoid all angular play between these parts.
  • a camshaft of the tubular type rotatable around a fixed axle particularly for use in an internal combustion engine, wherein at least each cam comprises a separate sintered part, angular fastening means connecting the cams one with respect to the other and arranged at the ends of each part to provide an invariable and inseparable assembly of the cams one after the other.
  • a camshaft according to claim 1, wherein the fastening means comprises a group of slots and tenons designed to be engaged one in the other, the dimensions of the slot and tenons being selected so that their reciprocal engagement can only be effected in a particular angular position.
  • a camshaft according to claim 1, wherein the fastening means comprises channels arranged in the ends of each part having a cam.
  • a camshaft according to claim 1 including a toothed driving wheel connected by angular fastening means against the cams.
  • a camshaft according to claim 1 including a toothed driving wheel having an overcasting of plastic material to form the contact surface of its teeth.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Gears, Cams (AREA)
US646283A 1966-09-13 1967-06-15 Camshaft Expired - Lifetime US3447395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1322866A CH443785A (fr) 1966-09-13 1966-09-13 Arbre à cames

Publications (1)

Publication Number Publication Date
US3447395A true US3447395A (en) 1969-06-03

Family

ID=4390524

Family Applications (1)

Application Number Title Priority Date Filing Date
US646283A Expired - Lifetime US3447395A (en) 1966-09-13 1967-06-15 Camshaft

Country Status (6)

Country Link
US (1) US3447395A (de)
AT (1) AT268779B (de)
BE (1) BE703688A (de)
CH (1) CH443785A (de)
DE (1) DE1575572A1 (de)
GB (1) GB1131379A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211192A (en) * 1976-12-10 1980-07-08 Sulzer Brothers Ltd. Camshaft for an internal combustion engine
US4638683A (en) * 1984-06-18 1987-01-27 Ngk Insulators, Ltd. Camshaft for engine
US4665766A (en) * 1983-09-28 1987-05-19 Nippon Piston Ring Co., Ltd. Shaft member
US4708029A (en) * 1984-09-11 1987-11-24 Nippon Piston Ring Co., Ltd. Camshaft
US4781075A (en) * 1983-08-03 1988-11-01 Nippon Piston Ring Co., Ltd. Camshaft and method of making the same
US5293847A (en) * 1993-02-16 1994-03-15 Hoffman Ronald J Powdered metal camshaft assembly
US5429080A (en) * 1993-12-13 1995-07-04 Evestar Technologies, Inc. Compact internal combustion engine
US6305242B1 (en) 1998-09-04 2001-10-23 Cummins Engine Company Ltd. Camshaft alignment
EP1288445A3 (de) * 2001-08-29 2004-07-28 Honda Giken Kogyo Kabushiki Kaisha Ventilbetätigungsvorrichtung eines angetriebenen Glieds und Nocken
WO2006074498A3 (de) * 2005-01-17 2006-11-16 Avl List Gmbh Nockenwelle für eine hubkolbenmaschine
WO2009056237A1 (de) * 2007-11-02 2009-05-07 Daimler Ag Ventiltriebvorrichtung
CN102862102A (zh) * 2012-08-31 2013-01-09 浙江省平湖市工具厂 丝锥铲磨机的凸轮装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1499946A (en) * 1975-04-21 1978-02-01 Dresser Ind Crankshaft construction
IT1180140B (it) * 1984-11-19 1987-09-23 Tecnamotor Spa Albero di distribuzione composito per motori endotermici
DE19738612A1 (de) * 1997-09-04 1999-03-11 Volkswagen Ag Nockenwellenanordnung für Verbrennungsmotoren
DE19837385A1 (de) * 1998-08-18 2000-02-24 Joachim Gadau Gebaute Nockenwelle
DE102006013813B4 (de) * 2006-03-23 2011-05-12 Mahle International Gmbh Nockenwelle von insbesondere Kraftfahrzeugverbrennungsmotoren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1512034A (en) * 1923-07-09 1924-10-21 Samuel W Luitwieler Cam and spindle construction
US2473417A (en) * 1944-05-24 1949-06-14 William H Harman Corp Sectional shaft
US3199364A (en) * 1963-09-10 1965-08-10 Morse Chain Co Composite plastic gear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1512034A (en) * 1923-07-09 1924-10-21 Samuel W Luitwieler Cam and spindle construction
US2473417A (en) * 1944-05-24 1949-06-14 William H Harman Corp Sectional shaft
US3199364A (en) * 1963-09-10 1965-08-10 Morse Chain Co Composite plastic gear

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211192A (en) * 1976-12-10 1980-07-08 Sulzer Brothers Ltd. Camshaft for an internal combustion engine
US4781075A (en) * 1983-08-03 1988-11-01 Nippon Piston Ring Co., Ltd. Camshaft and method of making the same
US4665766A (en) * 1983-09-28 1987-05-19 Nippon Piston Ring Co., Ltd. Shaft member
US4638683A (en) * 1984-06-18 1987-01-27 Ngk Insulators, Ltd. Camshaft for engine
US4708029A (en) * 1984-09-11 1987-11-24 Nippon Piston Ring Co., Ltd. Camshaft
US4761870A (en) * 1984-09-11 1988-08-09 Nippon Piston Ring Co., Ltd. Method for making a camshaft
US5293847A (en) * 1993-02-16 1994-03-15 Hoffman Ronald J Powdered metal camshaft assembly
WO1994019586A1 (en) * 1993-02-16 1994-09-01 Ryobi Outdoor Products, Inc. Powdered metal camshaft assembly
US5429080A (en) * 1993-12-13 1995-07-04 Evestar Technologies, Inc. Compact internal combustion engine
US6305242B1 (en) 1998-09-04 2001-10-23 Cummins Engine Company Ltd. Camshaft alignment
EP1288445A3 (de) * 2001-08-29 2004-07-28 Honda Giken Kogyo Kabushiki Kaisha Ventilbetätigungsvorrichtung eines angetriebenen Glieds und Nocken
WO2006074498A3 (de) * 2005-01-17 2006-11-16 Avl List Gmbh Nockenwelle für eine hubkolbenmaschine
WO2009056237A1 (de) * 2007-11-02 2009-05-07 Daimler Ag Ventiltriebvorrichtung
CN102862102A (zh) * 2012-08-31 2013-01-09 浙江省平湖市工具厂 丝锥铲磨机的凸轮装置

Also Published As

Publication number Publication date
GB1131379A (en) 1968-10-23
BE703688A (de) 1968-02-01
DE1575572A1 (de) 1970-01-29
CH443785A (fr) 1967-09-15
AT268779B (de) 1969-02-25

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