ES2299384A1 - Modified assembly of hub and ring for use in synchronized gearboxes, has synchronized hub with cylindrical configuration to define area outside perimeter and inner radius to define central accommodation - Google Patents
Modified assembly of hub and ring for use in synchronized gearboxes, has synchronized hub with cylindrical configuration to define area outside perimeter and inner radius to define central accommodation Download PDFInfo
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- ES2299384A1 ES2299384A1 ES200602833A ES200602833A ES2299384A1 ES 2299384 A1 ES2299384 A1 ES 2299384A1 ES 200602833 A ES200602833 A ES 200602833A ES 200602833 A ES200602833 A ES 200602833A ES 2299384 A1 ES2299384 A1 ES 2299384A1
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- 230000001360 synchronised effect Effects 0.000 title claims abstract 6
- 230000004308 accommodation Effects 0.000 title abstract description 5
- 238000004663 powder metallurgy Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
- F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
- F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Conjunto modificado de cubo y anillo con presincronización en el centro del sector.Modified hub and ring set with presynchronization in the center of the sector.
La presente invención se engloba dentro del campo de los componentes auxiliares en el sector de la automoción y más concretamente en el relativo a las cajas de cambios.The present invention is encompassed within the field of auxiliary components in the automotive sector and more specifically in the case of gearboxes.
El objeto se refiere a un nuevo conjunto de cubo y anillo de sincronismo para cajas de cambios fabricadas con tecnología pulvimetalúrgica con rebajes y salientes en determinadas zonas orientadas a la mejora de la etapa de presincronización.The object refers to a new cube set and synchronization ring for gearboxes manufactured with powder metallurgical technology with recesses and protrusions in certain areas aimed at improving the presynchronization stage.
El mercado del automóvil evoluciona rápidamente marcando retos cada vez más ambiciosos en cuanto a las prestaciones que deben cumplir los componentes que integran un automóvil.The car market evolves rapidly marking increasingly ambitious challenges in terms of benefits that the components that make up a car must meet.
Por extensión, los conjuntos de cubo y anillo de sincronismo, como componentes mecánicos que forman parte de las cajas de cambios de los vehículos, están sometidos a altas exigencias técnicas en fabricación, tanto desde el punto de vista de su diseño geométrico como también de sus propiedades mecánicas.By extension, the hub and ring assemblies of synchronism, as mechanical components that are part of the vehicle gearboxes are subject to high technical requirements in manufacturing, both from the point of view of its geometric design as well as its properties mechanical
En la actualidad las transmisiones manuales están equipadas con sistemas de sincronización que aseguran una mayor fiabilidad y rendimiento en los cambios de marcha. La función de los sistemas de sincronización es permitir que el árbol de transmisión y la marcha igualen su velocidad de giro para permitir la operación de cambio de marcha.Currently manual transmissions they are equipped with synchronization systems that ensure a greater reliability and performance in gear changes. The function of synchronization systems is to allow the tree to transmission and gear match its turning speed to allow The gear change operation.
En dicha operación, el manguito avanza con movimiento axial hacia la marcha. El cubo de sincronismo, que se encuentra rígidamente unido al árbol de la transmisión, gira con la misma velocidad de rotación que éste último, guía y transmite la velocidad de rotación al manguito durante su avance axial. Durante la etapa inicial de la sincronización el manguito entra en contacto con el anillo de sincronización, que es alineado con el movimiento del manguito para permitir que la sincronización prosiga. En una etapa posterior, el anillo de sincronización, obligado por el manguito y el fiador, continúa avanzando axialmente hacia la marcha, de modo que en la parte interior del anillo de sincronización tienen lugar una serie de contactos entre superficies cónicas lográndose la sincronización por fricción y arrastre mecánico. Al proceso de alineamiento del anillo con el manguito se le denomina genéricamente presincronización.In said operation, the sleeve advances with axial movement towards the march. The synchronism cube, which is is rigidly attached to the transmission shaft, rotates with the same rotation speed as the latter, guides and transmits the rotation speed to the sleeve during its axial advance. During the initial stage of synchronization the sleeve comes into contact with the synchronization ring, which is aligned with the movement of the sleeve to allow synchronization to continue. In a later stage, the synchronization ring, bound by the sleeve and catch, continues to move axially towards the gear, so that inside the ring of synchronization take place a series of contacts between surfaces conical achieving friction and drag synchronization mechanic. The process of aligning the ring with the sleeve is Generically called presynchronization.
Por último, una vez las velocidades se han igualado, el manguito continua su avance axial hasta engranar con el cuerpo de embrague de la marcha, instante en el cual la operación de cambio de marcha concluye.Finally, once the speeds have been matched, the sleeve continues its axial advance until it engages with the gear clutch body, at which time the gear change operation concludes.
Los cubos de sincronismo fabricados en la actualidad mediante tecnología de pulvimetalurgia tienen una forma tal que presentan cavidades en su dentado exterior con distintas geometrías (habitualmente en forma de T) en los que se aloja el fiador, elemento funcional que facilita el guiado del manguito y del anillo de sincronización durante la presincronización.The synchronism cubes manufactured in the currently using powder metallurgy technology they have a way such that they have cavities in their outer teeth with different geometries (usually T-shaped) in which the surety, functional element that facilitates the guiding of the sleeve and of the synchronization ring during presynchronization.
Por lo tanto la función de dichas cavidades es de alta importancia y deben cumplir altas exigencias en sus tolerancias. Sin embargo su fabricación mediante pulvimetalurgia es limitante en cuanto a la posibilidad de alcanzar ciertas tolerancias debido a que están situadas en la zona periférica del cubo donde existen ciertos desajustes dimensionales relacionados con el proceso de fabricación.Therefore the function of these cavities is of high importance and must meet high demands on their tolerances However its manufacture by powder metallurgy is limiting in terms of the possibility of reaching certain tolerances because they are located in the peripheral area of the cube where there are certain dimensional mismatches related to the fabrication process.
Por ello se ha detectado la necesidad de idear un conjunto de cubo y anillo de sincronismo modificado, de forma tal que la función de presincronización del anillo se lleve a cabo en zonas alojadas en la parte central del cubo de sincronismo, donde es posible alcanzar altas exigencias de tolerancias aplicando procedimientos sencillos de fabricación por pulvimetalurgia.Therefore the need to devise has been detected a modified hub and timing ring assembly, so such that the ring preset function is carried out in areas housed in the central part of the synchronism hub, where it is possible to achieve high tolerance requirements by applying Simple manufacturing procedures by powder metallurgy.
La presente invención representa un cambio radical en la fabricación por pulvimetalurgia de conjuntos formados por cubo y anillo de sincronismo y da solución a las limitaciones antes descritas que impiden la mejora de sus prestaciones.The present invention represents a change radical in powder metallurgy manufacturing of formed assemblies by hub and synchronization ring and gives solution to the limitations described above that prevent the improvement of its benefits.
Este objetivo se consigue por medio de la invención tal y como está definida en las reivindicaciones 1 y 4. En las reivindicaciones dependientes se definen realizaciones preferidas de la invención.This objective is achieved through the invention as defined in claims 1 and 4. In the dependent claims, embodiments are defined. Preferred of the invention.
Un primer aspecto de la presente invención consiste en un conjunto modificado de anillo y cubo de sincronismo del tipo empleado en cajas de cambio, comprendiendo dicho conjunto un cubo de sincronismo de configuración sustancialmente cilíndrica que presenta un radio exterior para definir una superficie perimetral y un radio interior para definir un alojamiento central, disponiendo de un rehundido perimetral que determina junto con dicha superficie perimetral, un tabique exterior, y un anillo de sincronismo que presenta un radio exterior para definir una superficie perimetral y un radio interior para definir un alojamiento central, disponiendo de una zona elevada perimetral que determina junto con dicha superficie perimetral un tabique interior, caracterizado porque el cubo de sincronismo fabricado por pulvimetalurgia dispone de al menos un rebaje en la pared interior del tabique exterior.A first aspect of the present invention It consists of a modified set of ring and timing hub of the type used in gearboxes, said set comprising a synchronization hub of substantially cylindrical configuration which has an outer radius to define a surface perimeter and an inner radius to define a central housing, having a perimeter recess that determines along with said perimeter surface, an outer partition, and a ring of synchronism that presents an external radius to define a perimeter surface and an inner radius to define a central housing, having an elevated perimeter area that together with said perimeter surface determines an interior partition, characterized in that the synchronization hub manufactured by powder metallurgy has at least one recess in the inner wall of the outer partition.
De esta manera durante la fase de presincronización el rebaje permite que el cubo de sincronismo iguale las velocidades de rotación del manguito y del anillo de sincronismo en el movimiento axial del manguito hacia la marcha. Asimismo los rebajes favorecen el guiado del manguito y del anillo de sincronismo de modo que éstos se alineen en todo momento de modo concéntrico facilitando la presincronización.In this way during the phase of Presynchronization the recess allows the synchronization cube match the rotational speeds of the sleeve and ring synchronism in the axial movement of the sleeve towards the march. Also the recesses favor the guiding of the sleeve and the ring of synchronism so that they align at all times so concentric facilitating presynchronization.
El proceso de fabricación del cubo de sincronismo por pulvimetalurgia se ve igualmente mejorado ya que la ubicación de los rebajes en la zona central del cubo de sincronismo permite alcanzar tolerancias más exigentes que en los cubos fabricados actualmente en los que las zonas funcionales para la presincronización se sitúan en el perímetro de la pieza (zona de ranuras). Además se evita la necesidad de disponer sobre el cubo otro tipo de geometría para la realización de dicha función y que frecuentemente comprometen las factibilidad técnica de fabricación e incrementan su coste.The cube manufacturing process of powder metallurgy is equally improved since the location of the recesses in the central area of the synchronism hub allows to reach more demanding tolerances than in cubes currently manufactured in which the functional zones for the Presynchronization are located on the perimeter of the piece (area of slots) In addition the need to dispose on the cube is avoided another type of geometry to perform this function and that frequently compromise the technical feasibility of manufacturing and They increase your cost.
Según otro aspecto de la invención, el cubo de sincronismo podrá disponer de rebajes equidistantes entre sí.According to another aspect of the invention, the bucket of synchronism may have equidistant recesses to each other.
Otro de los objetos principales de la presente invención consiste en un conjunto modificado de anillo y cubo de sincronismo del tipo empleado en cajas de cambio, comprendiendo dicho conjunto un cubo de sincronismo de configuración sustancialmente cilíndrica que presenta un radio exterior para definir una superficie perimetral y un radio interior para definir un alojamiento central, disponiendo de un rehundido perimetral que determina junto con dicha superficie perimetral un tabique exterior, y un anillo de sincronismo que presenta un radio exterior para definir una superficie perimetral y un radio interior para definir un alojamiento central, disponiendo de una zona elevada perimetral que determina junto con dicha superficie perimetral un tabique interior, caracterizado porque el anillo de sincronismo fabricado por pulvimetalurgia dispone de al menos un saliente en la pared exterior del tabique interior.Another of the main objects of this invention consists of a modified ring and hub assembly of synchronism of the type used in gearboxes, comprising said set a configuration sync cube substantially cylindrical that has an outer radius for define a perimeter surface and an inner radius to define a central accommodation, having a perimeter recess that together with said perimeter surface determines a partition exterior, and a synchronization ring that has an external radius to define a perimeter surface and an inner radius to define a central accommodation, having an elevated area perimeter that determines together with said perimeter surface a interior partition, characterized in that the synchronization ring manufactured by powder metallurgy has at least one projection in the outer wall of the inner partition.
De este modo se hace posible la fabricación completa del conjunto de cubo y anillo de sincronización por pulvimetalurgia por tratarse de la tecnología más competitiva para la fabricación de este tipo de geometrías. Permitiéndose de esta forma la definición de un conjunto de sincronización anillo - cubo completamente pulvimetalúrgico, lo que muchas veces constituye una ventaja comercial frente al cliente al poder ofertar conjuntos funcionales en lugar de piezas individuales.This makes manufacturing possible complete set of hub and timing ring by powder metallurgy because it is the most competitive technology for the manufacture of this type of geometries. Allowing yourself from this form the definition of a ring-cube synchronization set completely powder metallurgical, which often constitutes a commercial advantage over the client to offer sets functional instead of individual pieces.
Para una mejor comprensión de lo descrito en la memoria se acompañan una serie de dibujos relacionados expresamente con una realización de dicha invención que se presenta como ejemplo ilustrativo y no limitativo de ésta.For a better understanding of what is described in the memory are accompanied by a series of expressly related drawings with an embodiment of said invention presented as an example illustrative and not limiting it.
En dichos dibujos la figura 1 representa una vista global del conjunto modificado de cubo y anillo de sincronización objeto de la presente invención.In said drawings figure 1 represents a global view of the modified hub and ring assembly synchronization object of the present invention.
La figura 2 representa una vista individualizada del cubo de sincronización.Figure 2 represents an individualized view of the synchronization cube.
La figura 3 representa una vista en sección del cubo de sincronismo, según el corte B-B de la figura 2.Figure 3 represents a sectional view of the synchronization hub, according to section B-B of the figure 2.
La figura 4 representa una vista individualizada del anillo de sincronización.Figure 4 represents an individualized view of the synchronization ring.
La figura 5 representa una vista en sección del anillo de sincronización, según el plano de corte C-C de la figura 4.Figure 5 represents a sectional view of the synchronization ring, according to the cutting plane C-C of Figure 4.
El conjunto objeto de la presente invención, tal y como se aprecia en la figura 1, está constituido por un cubo de sincronismo (1) y un anillo de sincronismo (6) que se desplaza axialmente en el interior de aquel.The set object of the present invention, such and as seen in figure 1, it is constituted by a cube of synchronism (1) and a synchronism ring (6) that moves axially inside it.
El cubo de sincronismo (1), tal y como se aprecia en las figuras 2 y 3, consiste en un cuerpo de configuración sustancialmente cilíndrica que presenta un radio exterior para definir una superficie perimetral (2) y un radio interior para definir un alojamiento central (3), disponiendo de un rehundido perimetral (4) que determina junto con dicha superficie perimetral (2) un tabique exterior (5). Además, el cubo de sincronismo (1) fabricado por pulvimetalurgia dispone de 3 rebajes (11) en la pared interior (12) del tabique exterior (5) separados una magnitud angular de 120°.The synchronism cube (1), as it is appreciate in figures 2 and 3, it consists of a body of substantially cylindrical configuration presenting a radius exterior to define a perimeter surface (2) and a radius interior to define a central housing (3), having a recessed perimeter (4) that determines together with said surface perimeter (2) an outer partition (5). In addition, the cube of synchronism (1) manufactured by powder metallurgy has 3 recesses (11) on the inner wall (12) of the outer partition (5) separated an angular magnitude of 120 °.
En el presente modo de realización, el rebaje (11) se adentra en la pared interior (12) del tabique exterior (5) una distancia de entre 0.1 y 10 milímetros, presentando un chaflán en sus extremos longitudinales de entre 0° y 90° respecto a la pared interior (12).In the present embodiment, the recess (11) enters the inner wall (12) of the outer partition (5) a distance between 0.1 and 10 millimeters, presenting a chamfer at its longitudinal ends between 0 ° and 90 ° with respect to the inner wall (12).
El anillo de sincronismo (6), tal y como se aprecia en las figuras 4 y 5, consiste en un cuerpo que presenta un radio exterior para definir una superficie perimetral (7) y un radio interior para definir un alojamiento central (8), disponiendo de una zona elevada perimetral (9) que determina junto con dicha superficie perimetral (7) un tabique interior (10). Además, el anillo de sincronismo (6) fabricado por pulvimetalurgia dispone de 3 salientes (13) en la pared exterior (14) del tabique interior (10) separados una magnitud angular de 120°.The synchronization ring (6), as it is appreciate in figures 4 and 5, it consists of a body that presents a outer radius to define a perimeter surface (7) and a interior radius to define a central housing (8), providing of an elevated perimeter zone (9) that determines together with said perimeter surface (7) an interior partition (10). In addition, the synchronization ring (6) manufactured by powder metallurgy has 3 projections (13) on the outer wall (14) of the inner partition (10) separated an angular magnitude of 120 °.
En el presente modo de realización, el saliente (13) sobresale de la pared exterior (14) del tabique interior (10) una distancia de entre 0.1 y 10 milímetros, presentando un chaflán en sus extremos longitudinales de entre 0° y 90° respecto a la pared exterior (14).In the present embodiment, the projection (13) protrudes from the outer wall (14) of the inner partition (10) a distance between 0.1 and 10 millimeters, presenting a chamfer at its longitudinal ends between 0 ° and 90 ° with respect to the outer wall (14).
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200602833A ES2299384B1 (en) | 2006-11-02 | 2006-11-02 | MODIFIED CUBE AND RING SET WITH PRESINCRONIZATION IN THE CENTER OF THE SECTOR. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200602833A ES2299384B1 (en) | 2006-11-02 | 2006-11-02 | MODIFIED CUBE AND RING SET WITH PRESINCRONIZATION IN THE CENTER OF THE SECTOR. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2299384A1 true ES2299384A1 (en) | 2008-05-16 |
| ES2299384B1 ES2299384B1 (en) | 2009-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200602833A Active ES2299384B1 (en) | 2006-11-02 | 2006-11-02 | MODIFIED CUBE AND RING SET WITH PRESINCRONIZATION IN THE CENTER OF THE SECTOR. |
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| Country | Link |
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| ES (1) | ES2299384B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2259527A (en) * | 1938-05-12 | 1941-10-21 | Mack Mfg Corp | Synchronizing mechanism |
| US3741358A (en) * | 1970-09-24 | 1973-06-26 | Renault | Synchronizers |
| US5105927A (en) * | 1991-01-16 | 1992-04-21 | New Venture Gear, Inc. | Single cone servo action synchronizer |
| US5113985A (en) * | 1990-11-01 | 1992-05-19 | New Venture Gear, Inc. | Synchronizer strut guide |
| DE10113948A1 (en) * | 2001-03-22 | 2002-09-26 | Daimler Chrysler Ag | Synchronization device for motor vehicle gear box has synchronization ring turnable relative to transmission shaft or synchronization body, through two different angles for different turning directions |
| EP1507091A1 (en) * | 2003-08-11 | 2005-02-16 | BorgWarner Inc. | Segmented synchroniser clutch |
| ES2224016T3 (en) * | 2001-12-27 | 2005-03-01 | Getrag Synchrontechnik Gmbh | CLUTCH FOR A TRAIN OF CYLINDRICAL GEARS. |
-
2006
- 2006-11-02 ES ES200602833A patent/ES2299384B1/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2259527A (en) * | 1938-05-12 | 1941-10-21 | Mack Mfg Corp | Synchronizing mechanism |
| US3741358A (en) * | 1970-09-24 | 1973-06-26 | Renault | Synchronizers |
| US5113985A (en) * | 1990-11-01 | 1992-05-19 | New Venture Gear, Inc. | Synchronizer strut guide |
| US5105927A (en) * | 1991-01-16 | 1992-04-21 | New Venture Gear, Inc. | Single cone servo action synchronizer |
| DE10113948A1 (en) * | 2001-03-22 | 2002-09-26 | Daimler Chrysler Ag | Synchronization device for motor vehicle gear box has synchronization ring turnable relative to transmission shaft or synchronization body, through two different angles for different turning directions |
| ES2224016T3 (en) * | 2001-12-27 | 2005-03-01 | Getrag Synchrontechnik Gmbh | CLUTCH FOR A TRAIN OF CYLINDRICAL GEARS. |
| EP1507091A1 (en) * | 2003-08-11 | 2005-02-16 | BorgWarner Inc. | Segmented synchroniser clutch |
Non-Patent Citations (1)
| Title |
|---|
| US 5113985 A (B. FROST) 19.05.1992, columna 3, líneas 47-55; figura 3. * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2299384B1 (en) | 2009-04-01 |
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