DE1575572A1 - camshaft - Google Patents
camshaftInfo
- Publication number
- DE1575572A1 DE1575572A1 DE19671575572 DE1575572A DE1575572A1 DE 1575572 A1 DE1575572 A1 DE 1575572A1 DE 19671575572 DE19671575572 DE 19671575572 DE 1575572 A DE1575572 A DE 1575572A DE 1575572 A1 DE1575572 A1 DE 1575572A1
- Authority
- DE
- Germany
- Prior art keywords
- cams
- camshaft
- angular position
- cam
- fastening means
- 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
Links
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 ; Non-rotary 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 ; Non-rotary 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
Description
761*0-* 218/12761 * 0- * 218/12
26. Mai 1967May 26, 1967
P a t e η t a η m e 1 d u η gP a t e η t a η m e 1 d u η g
der Firma Motosacoche S.A.from Motosacoche S.A.
Genf (Schweiz) Route des Acacias, 56.Geneva (Switzerland) Route des Acacias, 56.
"Nockenwelle""Camshaft"
Gegenstand der vorliegenden Erfindung ist eine Nockenwelle röhrenförmiger Bauart, insbesondere für Verbrennungsmotoren, die sich um eine feststehende Achse dreht.The present invention relates to a camshaft tubular design, particularly for internal combustion engines, which rotates around a fixed axis.
Solche Nockenwellen werden gewöhnlich aus einem Stück hergestellt, zum Beispiel aus Guss, welcher nachgearbeitet werden muss um die gewünschte Nockenform' zu erhalten. EinSuch camshafts are usually made in one piece, For example made of cast, which has to be reworked in order to obtain the desired cam shape. A
909885/0173909885/0173
solches Verfahren ist kostspielig, vor allem hinsichtlich . der langwierigen Schleifarbeit, weil jeder Nocken einzeln geschliffen werden muss, und ebenfalls wegen der Herstellung des Zahnrades. Es ist der Zweck vorliegender Erfindung, die Gestehungskosten solcher Nockenwellen herabzusetzen. Die erfindungsgemässe Nockenwelle ist dadurch gekennzeichnet, dass jeder Nocken aus einem einzelnen Sinterformteil besteht, welcher in seiner V/inkelstellung den anderen Nocken gegenüber durch beidseitig an jedem Teil angeordnete Befestigungsmittel gesichert ist, so dass ein unverrückbarer Zusammenbau der aneinander angeordneten Nocken erzielt wird.such a procedure is costly, especially in terms of. the tedious grinding work because each cam is individually Must be ground, and also because of the manufacture of the gear. It is the purpose of the present invention that Reduce production costs of such camshafts. The camshaft according to the invention is characterized in that that each cam consists of a single sintered molded part, which in its angular position opposite the other cams is secured by fastening means arranged on both sides of each part, so that an immovable assembly the juxtaposed cams is achieved.
Die beigelegte Zeichnung zeigt schematisch und beispielhaft eine Ausführungsform der erfindungsgemässen Nockenwelle.The attached drawing shows schematically and by way of example an embodiment of the camshaft according to the invention.
Die Fig. 1 ist eine Seitenansicht im Schnitt dieser Nockenwelle; die Fig. 2 ist eine Vorderansicht der Nockenwelle.Fig. 1 is a side sectional view of this camshaft; Figure 2 is a front view of the camshaft.
Bezugnehmend auf die Zeichnung, dreht sich diese röhrenförmige Nockenwelle um eine feste Achse 1, die im Motorblock oder im Gehäuse insbesondere eines Verbrennungsmotors eingebaut ist. Bei diesem Ausführungsbeispiel enthält die dargestellte Nockenwelle nur zwei Nocken 2 und 3, die durch Zahnrad 4 angetrieben werden. Jeder dieser Nocken 2 und 3 besteht aus einem einzelnen Sinterformteil. Ein derartiges Verfahren ermöglicht eine leichte und wirtschaftliche Herstellung dieser Nocken, sogar solcher mit verwickelten Formen.Referring to the drawing, this tubular rotates Camshaft around a fixed axis 1, which is installed in the engine block or in the housing, in particular of an internal combustion engine. In this exemplary embodiment, the camshaft shown contains only two cams 2 and 3, which are driven by gear 4 will. Each of these cams 2 and 3 consists of a single sintered molded part. Such a method enables easy and economical manufacture of these cams, even those of intricate shapes.
Zur unverrückbaren Sicherung der gegenseitigen Winkelstellung der Nocken 2 und 3» wurden besondere Befestigungsmittel vorgesehen. Bei dem dargestellten Ausführungsbeispiel bestehen diese Befestigungsmittel aus einer Reihe von KerbenFor immovable securing of the mutual angular position the cams 2 and 3 »became special fasteners intended. In the illustrated embodiment, these fastening means consist of a series of notches
5 und Klauen 6, die auf den Stirnseiten der Nocken 2 und'3 angeordnet sind. Die Abmessungen der Kerben 5 und der Klauen5 and claws 6, which are arranged on the end faces of the cams 2 and 3. The dimensions of the notches 5 and the claws
6 sind so gewählt, dass sie nur in einer bestimmten Winkelstellung ineinandergreifen können. Wie es aus Fig. 2 hervorgeht, ist die obere Kerbe 5 schmäler als die anderen Kerben, \ und eine einzige, entsprechend bemessene, Klaue des anderen Teiles kann in diese schmale Kerbe 5 eindringen, so dass eine einzige Winkelstellung des Nockens 2 gegenüber dem Nocken 3 gesichert wird. Wie aus Fig. 2 ersichtlich ist, bestehen nicht nur die Nocken 2 und 3 u.s.w aus Einzelteilen, sondern das Zahnrad 4 zum Antrieb der Nockenwelle bildet ebenfalls einen einzelnen SinterformteiJ, welcher auch mit einer Reihe von Kerben 5 und anliegenden Klauen 6 versehen ist. Hinsichtlich einer wirtschaftlichen Herstellung, wird das Zahnrad 4 mit einem aus Kunststoff aufgeformten Teil ( versehen, welcher die Rollfläche der Verzahnung 8 gestaltet. Wie Fig. 1 zeigt, sind Ringnuten 9 und 10 in die Stirnseiten des Rades 4 eingearbeitet, um eine einwandfreie Verankerung des auf geformten Kunststoffes zu gewährleisten..6 are chosen so that they can only interlock in a certain angular position. As can be seen from Fig. 2, the upper notch 5 is narrower than the other notches, \ and a single, appropriately sized, claw of the other part can penetrate this narrow notch 5, so that a single angular position of the cam 2 relative to the cam 3 is secured. As can be seen from FIG. 2, not only do the cams 2 and 3 etc. consist of individual parts, but the gear wheel 4 for driving the camshaft also forms a single sintered molded part, which is also provided with a series of notches 5 and claws 6 resting against it. With a view to economical production, the gearwheel 4 is provided with a part ( molded from plastic) which forms the rolling surface of the toothing 8. As FIG on molded plastic.
Es-wären noch zahlreiche abgewandelte Ausführungsformen der der Befestigungsmittel zur Sicherung der gegenseitigenThere would be numerous modified embodiments of the the fastening means to secure the mutual
7 ϊ *AD ORiGWAL7 ϊ * AD ORiGWAL
Winkelstellung der Nocken 2 und 3 u.s.w. und des Zahnrades 4 denkbar. Die Reihen von Kerben 5 und· Klauen 6 könnten an beiden Enden der Teile 2, 3 und 4 durch axiale oder radiale Riffelungen ersetzt werden.Angular position of cams 2 and 3 etc. and the gear 4 conceivable. The rows of notches 5 and claws 6 could be at both ends of parts 2, 3 and 4 by axial or radial corrugations are replaced.
Die Befestigungsmittel der Teile 2, 3 und 4, zur Sicherung der Winkelstellung, sind derart bearbeitet, dass sie beim Zusammenbau dieser Teile ineinander ohne Spiel festsitzen. Nach dem Zusammenbau der Teile 2, 3 und 4 wird die Gesamtlänge der Nockenwelle durch Abdrehen des einen Endes auf das genaue Mass gebracht.The fastening means of parts 2, 3 and 4, for securing the angular position, are machined in such a way that they fit tightly into one another without play when these parts are assembled. After assembling the parts 2, 3 and 4, the total length of the camshaft is brought to the exact size by twisting off one end.
Aus vorstehender Beschreibung geht hervor, dass infolge der, kurzen Fertigungszeit der einzelnen gesinterten Nocken 2 und 3, ein solches Verfahren für die Herstellung von Nockenwellen sehr wirtschaftlich ist. Weiterhin erleichtert das Aufformen eines Kunststoffes, welcher die Rollfläche der Verzahnung 8 gestaltet, die verhältnismassig billige Herstellung einer genauen und geräusch].ösen Verzahnung.The above description shows that as a result of short production time of the individual sintered cams 2 and 3, such a process for the manufacture of camshafts is very economical. Furthermore, that makes it easier Forming a plastic, which the rolling surface of the Toothing 8 designed, the relatively cheap production of an accurate and noisy] .öse toothing.
Die Zahne 11 auο gesinterten Metallteilen bilden eine Verstärkung und zugleich eine Verankerung für die aus Kunststoff b' stehende Verzahnung 8. Die Ausführung des ganzen Rades 4 aus Kunststoff wäre hinsichtlich des ungünstigen Ausdehnungskoeffizienten nicht berechtigt, weil sich die im Motorblock auftretende Temperatur um ca. 100 G verändern kann.The teeth 11 auο sintered metal parts form a reinforcement and at the same time an anchorage for those made of plastic b 'standing teeth 8. The execution of the whole wheel 4 made of plastic would be in terms of the unfavorable coefficient of expansion not justified because the temperature occurring in the engine block can change by approx. 100 G.
000685/0173 6AD OR.Q.NAI.000685/0173 6AD OR.Q.NAI.
Claims (1)
t KRLIN 31 ύ^H PATEHT. '; · ■' - '. TE
t KRLIN 31 ύ ^ H
der Firma ■Patent application
of the company ■
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1322866A CH443785A (en) | 1966-09-13 | 1966-09-13 | Camshaft |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1575572A1 true DE1575572A1 (en) | 1970-01-29 |
Family
ID=4390524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19671575572 Pending DE1575572A1 (en) | 1966-09-13 | 1967-05-26 | camshaft |
Country Status (6)
Country | Link |
---|---|
US (1) | US3447395A (en) |
AT (1) | AT268779B (en) |
BE (1) | BE703688A (en) |
CH (1) | CH443785A (en) |
DE (1) | DE1575572A1 (en) |
GB (1) | GB1131379A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19738612A1 (en) * | 1997-09-04 | 1999-03-11 | Volkswagen Ag | Camshaft for internal-combustion engine |
DE19837385A1 (en) * | 1998-08-18 | 2000-02-24 | Joachim Gadau | Built-up camshaft composed of mutually centered cams adapters and pulleys using centering pieces and with center tie to hold all together in pre-tension |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1499946A (en) * | 1975-04-21 | 1978-02-01 | Dresser Ind | Crankshaft construction |
CH612727A5 (en) * | 1976-12-10 | 1979-08-15 | Sulzer Ag | |
JPS6033302A (en) * | 1983-08-03 | 1985-02-20 | Nippon Piston Ring Co Ltd | Preparation of cam shaft |
JPS6058922U (en) * | 1983-09-28 | 1985-04-24 | 日本ピストンリング株式会社 | shaft member |
JPS612970A (en) * | 1984-06-18 | 1986-01-08 | Ngk Insulators Ltd | Engine camshaft |
JPS6167525A (en) * | 1984-09-11 | 1986-04-07 | Nippon Piston Ring Co Ltd | Cam shaft |
IT1180140B (en) * | 1984-11-19 | 1987-09-23 | Tecnamotor Spa | COMPOSITE TIMING SHAFT FOR ENDOTHERMAL ENGINES |
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 |
GB2341220A (en) | 1998-09-04 | 2000-03-08 | Cummins Engine Co Ltd | Camshaft alignment and arrangement relative to crankshaft |
JP4078051B2 (en) * | 2001-08-29 | 2008-04-23 | 本田技研工業株式会社 | Combined body of driven rotary member for valve and cam |
WO2006074498A2 (en) * | 2005-01-17 | 2006-07-20 | Avl List Gmbh | Camshaft for an internal combustion engine |
DE102006013813B4 (en) * | 2006-03-23 | 2011-05-12 | Mahle International Gmbh | Camshaft of particular motor vehicle internal combustion engines |
DE102007052251A1 (en) * | 2007-11-02 | 2009-05-07 | Daimler Ag | Valve drive device |
CN102862102A (en) * | 2012-08-31 | 2013-01-09 | 浙江省平湖市工具厂 | Cam device of screw tap relief grinding machine |
Family Cites Families (3)
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 |
-
1966
- 1966-09-13 CH CH1322866A patent/CH443785A/en unknown
- 1966-11-25 AT AT1092066A patent/AT268779B/en active
-
1967
- 1967-05-26 DE DE19671575572 patent/DE1575572A1/en active Pending
- 1967-06-15 US US646283A patent/US3447395A/en not_active Expired - Lifetime
- 1967-09-08 BE BE703688D patent/BE703688A/xx unknown
- 1967-09-11 GB GB41359/67A patent/GB1131379A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19738612A1 (en) * | 1997-09-04 | 1999-03-11 | Volkswagen Ag | Camshaft for internal-combustion engine |
DE19837385A1 (en) * | 1998-08-18 | 2000-02-24 | Joachim Gadau | Built-up camshaft composed of mutually centered cams adapters and pulleys using centering pieces and with center tie to hold all together in pre-tension |
Also Published As
Publication number | Publication date |
---|---|
AT268779B (en) | 1969-02-25 |
BE703688A (en) | 1968-02-01 |
GB1131379A (en) | 1968-10-23 |
CH443785A (en) | 1967-09-15 |
US3447395A (en) | 1969-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
SH | Request for examination between 03.10.1968 and 22.04.1971 |