DE19619440A1 - Diverting roller for traction device - Google Patents
Diverting roller for traction deviceInfo
- Publication number
- DE19619440A1 DE19619440A1 DE19619440A DE19619440A DE19619440A1 DE 19619440 A1 DE19619440 A1 DE 19619440A1 DE 19619440 A DE19619440 A DE 19619440A DE 19619440 A DE19619440 A DE 19619440A DE 19619440 A1 DE19619440 A1 DE 19619440A1
- Authority
- DE
- Germany
- Prior art keywords
- roller
- hub
- rolling
- rolling bearing
- raceways
- 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.)
- Withdrawn
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
Classifications
-
- 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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
-
- 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
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
-
- 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
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/63—Gears with belts and 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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
- F16H2007/0865—Pulleys
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Rollen, insbesondere Umlenkrollen werden beispielsweise als Andruckrollen für einen Treibriemen in Riementrieben eingesetzt. Mit den Rollen wird der Treib riemen auf die für einen sicheren Betrieb notwendige Spannung gebracht und/oder umgelenkt. Eine solche Rolle ist beispielsweise aus der DE-A 195 15 351 bekannt. Die dort offenbarte Rolle weist einen Rollenkörper mit einer zylindrischen Mantelfläche auf, an der wenigstens ein schräg zur Stirnseite des Rollenkörpers umlaufender Wulst ausgebildet ist. Durch diesen schräg um laufenden Wulst auf der Mantelfläche der Rolle kann eine orts- und drehwin kelabhängige Eigenfrequenzverteilung der Zugstränge in dem Treibriemen erzeugt werden. Dadurch stellen sich in den Trums zwischen zwei Rollen keine ausgeprägten konstanten Eigenfrequenzen der Zugstränge und damit des Treib riemens ein, sondern nur noch ein Eigenfrequenzbereich, der durch den Modu lationsgrad der Umlenkrolle bestimmt wird. Dieser Modulationsgrad ist ab hängig vom Verhältnis des Rollenumfangs zur Periodenlänge des umlaufenden Wulstes. Nachteilig an dieser bekannten Rolle ist, daß die Mantelfläche nicht glatt ausgebildet sein kann, was zu erhöhten Herstellungskosten und gegebenen falls zu einem vorzeitigen Verschleiß des Treibriemens führt.Rollers, in particular deflection rollers, are used, for example, as pressure rollers for a belt in belt drives. With the roles the drive belts brought up to the tension required for safe operation and / or redirected. Such a role is, for example, from DE-A 195 15 351 known. The role disclosed there has a reel body with a cylindrical outer surface on which at least one obliquely to the end face of the Roll body circumferential bead is formed. Through this at an angle running bead on the outer surface of the roll can be a local and rotating kel-dependent natural frequency distribution of the tension cords in the drive belt be generated. As a result, there are none in the runs between two roles pronounced constant natural frequencies of the tensile strings and thus the drive belt, but only a natural frequency range that is determined by the mod degree of deflection is determined. This degree of modulation is down depending on the ratio of the roll size to the period length of the rotating Bulges. A disadvantage of this known role is that the outer surface is not can be formed smooth, resulting in increased manufacturing costs and given if the drive belt wears out prematurely.
Aufgabe der vorliegenden Erfindung ist es daher, eine Rolle vorzuschlagen, die ebenso wie die bekannte Rolle zuverlässig Resonanzschwingungen im Zug mitteltrieb reduziert bzw. unterbindet, und die gleichzeitig einfacher herzustel len ist.The object of the present invention is therefore to propose a role that just like the well-known role reliable resonance vibrations in the train middle drive reduced or prevented, and at the same time easier to manufacture len is.
Die erfindungsgemäße Rolle zur Anlage an ein Zugmittel weist eine zylindri sche Mantelfläche auf, die geneigt zur Drehachse der Rolle angeordnet ist. Wird diese Rolle insbesondere im Zugtrum eines Riementriebs eingesetzt, ändert sich die Spannung im Riemen kontinuierlich über eine volle Umdrehung der Rolle.The role according to the invention for contact with a traction device has a cylindri cal lateral surface, which is arranged inclined to the axis of rotation of the roller. Becomes this role, especially used in the train of a belt drive, changes the tension in the belt continuously over a full revolution of the roller.
Zweckmäßigerweise weist die Rolle einen Rollenkörper auf, der mit einer ein Wälzlager aufnehmende Nabe versehen ist. Das Wälzlager weist zweckmäßiger weise zwei ineinander angeordnete Ringe mit an ihren einander zugewandten Mantelflächen ausgebildeten Laufbahnen für Wälzkörper auf, wobei eine von den Laufbahnen aufgespannte Ebene, in der die Kugeln angeordnet sind, quer zu der Drehachse der Umlenkrolle angeordnet ist. Bei dieser Ausführung müssen keine besonderen Maßnahmen an der zylindrischen Mantelfläche für die Herstellung der erfindungsgemäßen Rolle ergriffen werden; es genügt, das Wälzlager leicht geneigt zum Rollenkörper anzuordnen.The roller expediently has a roller body which engages with a Rolling bearing receiving hub is provided. The rolling bearing has more expedient wise two nested rings with their facing each other Sheathed raceways for rolling elements, one of the plane spanning the raceways, in which the balls are arranged, transversely is arranged to the axis of rotation of the deflection roller. In this version need no special measures on the cylindrical surface for the manufacture of the roll according to the invention is undertaken; it is enough that Arrange the rolling bearing slightly inclined to the roller body.
Eine besonders kostengünstige erfindungsgemäße Rolle ist dadurch gebildet, daß der Außenring des Wälzlagers von der Nabe des aus Kunststoff gebildeten Rollenkörpers umspritzt ist.A particularly inexpensive role according to the invention is formed in that the outer ring of the rolling bearing from the hub of the plastic Roll body is overmolded.
Die einzige Figur zeigt eine längsgeschnittene erfindungsgemäße Umlenkrolle. Ein Rollenkörper 1 weist eine zylindrische Mantelfläche 2 auf. Der Rollenkörper 1 ist weiterhin mit einer Nabe 3 versehen, die ein Wälzlager 4 umfaßt. Das Wälzlager 4 weist einen Innenring 5, einen Außenring 6 und aneinander zugewandten Mantelflächen der Ringe 5, 6 vorgesehene Laufbahnen 7, 8 auf. An den Laufbahnen 7, 8 wälzen Kugeln 9 ab. Der Figur ist zu entnehmen, daß die von den Laufbahnen 7, 8 aufgespannte Ebene, in der die Kugeln 9 angeord net sind, schiefwinklig zu einer die zylindrische Mantelfläche tangierenden Ebene angeordnet ist. Die Drehachse der Rolle ist zu deren Mantelfläche 2 geneigt angeordnet. Der Rollenkörper 1 ist aus Kunststoff im Spritzgießverfahren hergestellt, wobei der Außenring 6 des Wälzlagers 4 von der Nabe 3 umspritzt ist.The single figure shows a longitudinally cut deflection roller according to the invention. A roller body 1 has a cylindrical outer surface 2 . The roller body 1 is further provided with a hub 3 , which comprises a roller bearing 4 . The roller bearing 4 has an inner ring 5 , an outer ring 6 and mutually facing lateral surfaces of the rings 5 , 6 provided raceways 7 , 8 . Balls 9 roll on the raceways 7 , 8 . The figure shows that the plane spanned by the raceways 7 , 8 , in which the balls 9 are arranged, is arranged at an oblique angle to a plane tangent to the cylindrical surface. The axis of rotation of the roller is arranged inclined to its outer surface 2 . The roller body 1 is made of plastic by injection molding, the outer ring 6 of the roller bearing 4 being encapsulated by the hub 3 .
BezugszeichenlisteReference list
1 Rollenkörper
2 zylindrische Mantelfläche
3 Nabe
4 Wälzlager
5 Innenring
6 Außenring
7 Laufbahn
8 Laufbahn
9 Wälzkörper 1 roll body
2 cylindrical surface
3 hub
4 rolling bearings
5 inner ring
6 outer ring
7 career
8 career
9 rolling elements
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19619440A DE19619440A1 (en) | 1996-05-14 | 1996-05-14 | Diverting roller for traction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19619440A DE19619440A1 (en) | 1996-05-14 | 1996-05-14 | Diverting roller for traction device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19619440A1 true DE19619440A1 (en) | 1997-11-20 |
Family
ID=7794300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19619440A Withdrawn DE19619440A1 (en) | 1996-05-14 | 1996-05-14 | Diverting roller for traction device |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19619440A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1151748A (en) * | 1913-11-13 | 1915-08-31 | Carl W Anderson | Pulley. |
US1182630A (en) * | 1914-12-19 | 1916-05-09 | Alvah Otis Boyland | Power-transmission mechanism. |
GB1179668A (en) * | 1967-07-13 | 1970-01-28 | Ibm | Drive Coupling System |
WO1989002042A1 (en) * | 1986-03-06 | 1989-03-09 | Artic Nova | Self-centering drum |
-
1996
- 1996-05-14 DE DE19619440A patent/DE19619440A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1151748A (en) * | 1913-11-13 | 1915-08-31 | Carl W Anderson | Pulley. |
US1182630A (en) * | 1914-12-19 | 1916-05-09 | Alvah Otis Boyland | Power-transmission mechanism. |
GB1179668A (en) * | 1967-07-13 | 1970-01-28 | Ibm | Drive Coupling System |
WO1989002042A1 (en) * | 1986-03-06 | 1989-03-09 | Artic Nova | Self-centering drum |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: INA WAELZLAGER SCHAEFFLER OHG, 91074 HERZOGENAURAC |
|
8139 | Disposal/non-payment of the annual fee |