DE102012208128B4 - Adjusting device with a drive shaft and method for producing an adjusting device - Google Patents
Adjusting device with a drive shaft and method for producing an adjusting device Download PDFInfo
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- DE102012208128B4 DE102012208128B4 DE102012208128.3A DE102012208128A DE102012208128B4 DE 102012208128 B4 DE102012208128 B4 DE 102012208128B4 DE 102012208128 A DE102012208128 A DE 102012208128A DE 102012208128 B4 DE102012208128 B4 DE 102012208128B4
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
- B60N2/02253—Electric motors therefor characterised by the transmission between the electric motor and the seat or seat parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/067—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable by linear actuators, e.g. linear screw mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/164—Linear actuator, e.g. screw mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/166—Worm and worm gear articulations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
- B60N2/185—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the drive mechanism
- B60N2/1853—Linear actuator, e.g. screw mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
- B60N2/185—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the drive mechanism
- B60N2/1871—Worm and worm gear articulations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/2231—Worm and worm gear articulations
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- 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
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
- F16C1/08—End connections
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
- B60P3/36—Auxiliary arrangements; Arrangements of living accommodation; Details
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- 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
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
- F16C1/101—Intermediate connectors for joining portions of split flexible shafts and/or sheathings
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- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/08—Vehicle seats, e.g. in linear movable seats
Abstract
Verstelleinrichtung (1) zum Verstellen eines Verstellteils eines Fahrzeugs, mit - einer Antriebsvorrichtung (10), - einer um eine Drehachse (A) drehbaren, durch die Antriebsvorrichtung (10) antreibbaren Antriebswelle (4), die einen Verbindungsabschnitt (40, 41) aufweist, und
- einem Wellenabschnitt (11, 12), der über den Verbindungsabschnitt (40,41) entlang einer Drehrichtung um die Drehachse (A) formschlüssig mit der Antriebswelle (4) gekoppelt ist, dadurch gekennzeichnet, dass die Antriebswelle (4) mittels Fließpressen hergestellt ist, wobei die Antriebswelle (4) an einem axial ersten Ende einen ersten Verbindungsabschnitt (40) und an einem axial zweiten Ende einen zweiten Verbindungsabschnitt (41) aufweist, wobei jeder Verbindungsabschnitt (40, 41) durch einen sich abschnittsweise entlang der Drehachse (A) erstreckenden Mehrkant ausgebildet ist, wobei der jeweilige Verbindungsabschnitt (40, 41) in das zugeordnete axiale Ende eingeformt ist und sich axial in die Antriebswelle (4) hinein erstreckt.
Adjusting device (1) for adjusting an adjusting part of a vehicle, with - a drive device (10), - a drive shaft (4) which is rotatable about an axis of rotation (A) and drivable by the drive device (10) and has a connecting section (40, 41) , and
- A shaft section (11, 12) which is positively coupled to the drive shaft (4) via the connecting section (40, 41) along a direction of rotation about the axis of rotation (A), characterized in that the drive shaft (4) is produced by means of extrusion , wherein the drive shaft (4) has a first connecting section (40) at an axially first end and a second connecting section (41) at an axially second end, each connecting section (40, 41) having a section extending along the axis of rotation (A) extending polygon is formed, wherein the respective connecting portion (40, 41) is molded into the associated axial end and extends axially into the drive shaft (4).
Description
Die Erfindung betrifft eine Verstelleinrichtung zum Verstellen eines Verstellteils eines Fahrzeugs nach dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zum Herstellen einer Verstelleinrichtung nach dem Oberbegriff des Anspruchs 10.The invention relates to an adjusting device for adjusting an adjusting part of a vehicle according to the preamble of
Eine derartige Verstelleinrichtung weist eine Antriebsvorrichtung und eine um eine Drehachse drehbare, durch die Antriebsvorrichtung antreibbare Antriebswelle auf. In die Antriebswelle ist ein Verbindungsabschnitt eingeformt, über den ein Wellenabschnitt entlang einer Drehrichtung um die Drehachse formschlüssig mit der Antriebswelle gekoppelt ist.Such an adjusting device has a drive device and a drive shaft rotatable about an axis of rotation and drivable by the drive device. A connecting section is molded into the drive shaft, via which a shaft section is coupled to the drive shaft in a form-fitting manner along a direction of rotation about the axis of rotation.
Bei einer aus der
Flexible Wellen, wie sie aus der
Bei der konventionellen Fertigung einer derartigen Antriebswelle wird zunächst ein Rohling gefertigt, der anschließend in seine äußere Form gedreht wird. Anschließend werden einseitig an einem axialen Ende oder beidseitig an zwei axialen Enden Bohrungen in das Werkstück eingebracht, die zur Ausbildung einer Mehrkant-, beispielsweise Vierkantgeometrie zur Herstellung eines oder zweier Verbindungsabschnitte geräumt werden. Anschließend wird das Werkstück geschliffen und gehärtet. Insgesamt ergibt sich ein Fertigungsprozess, der aus bis zu zehn einzelnen Prozessschritten besteht und demzufolge zeitintensiv, aufwendig und teuer ist.In the conventional production of such a drive shaft, a blank is first produced, which is then turned into its outer shape. Then bores are made in the workpiece on one side at one axial end or on both sides at two axial ends, which are broached to form a polygonal, for example square, geometry to produce one or two connecting sections. The workpiece is then ground and hardened. Overall, the result is a manufacturing process that consists of up to ten individual process steps and is consequently time-consuming, complex and expensive.
Aus der
Bei der
Das Lehrbuch E. Doege et al., „Handbuch Umformtechnik - Grundlagen, Technologien, Maschinen“, Springer 2007, ISBN 978-3-540-23441-8 beschreibt das Herstellen von Bauteilen mittels Fließpressen.The textbook E. Doege et al., "Handbook of Forming Technology - Basics, Technologies, Machines", Springer 2007, ISBN 978-3-540-23441-8 describes the manufacture of components using extrusion.
Aufgabe der vorliegenden Erfindung ist es, eine Verstelleinrichtung zu schaffen, die eine einfache, kostengünstige und schnelle Herstellung insbesondere der Antriebswelle bei Erfüllung der Festigkeitsanforderungen zum Übertragen von Verstellkräften ermöglicht, sowie ein Verfahren zum Herstellen einer Verstelleinrichtung anzugeben.The object of the present invention is to create an adjustment device that enables simple, inexpensive and fast production, especially of the drive shaft, while meeting the strength requirements for transmitting adjustment forces, and to specify a method for producing an adjustment device.
Diese Aufgabe wird durch einen Gegenstand mit den Merkmalen des Anspruchs 1 sowie durch ein Verfahren mit den Merkmalen des Anspruchs 10 gelöst.This object is achieved by an object with the features of
Demnach ist vorgesehen, dass die Antriebswelle mittels Fließpressen, insbesondere Kaltfließpressen, hergestellt ist.Accordingly, it is provided that the drive shaft is produced by means of extrusion, in particular cold extrusion.
Beim Fließpressen handelt es sich um einen Druckumformprozess, bei dem ein Werkstoff unter Einwirkung eines hohen Drucks zum Fließen gebracht und z.B. durch eine formgebende Werkzeugöffnung, die sogenannte Matrize, gepresst wird. Das Kaltfließpressen erfolgt hierbei bei einer Arbeitstemperatur unterhalb der sogenannten Rekristallisationstemperatur. Rekristallisation beschreibt in der Metallkunde den Abbau von Gitterfehlern in Kristalliten durch Neubildung des Gefüges aufgrund von Keimbildung und Kornwachstum. Als Rekristallisationstemperatur wird diejenige Temperatur bezeichnet, bei der ein Werkstoff innerhalb einer Betrachtungszeit vollständig rekristallisiert. Die Rekristallisationstemperatur wird z.B. mit 40 bis 50 % der absoluten Schmelztemperatur angegeben.Extrusion is a pressure forming process in which a material is made to flow under the action of high pressure and, for example, pressed through a forming tool opening, the so-called die. Cold extrusion takes place at a working temperature below the so-called recrystallization temperature. In metallurgy, recrystallization describes the breakdown of lattice defects in crystallites through the formation of a new structure due to nucleation and grain growth. The recrystallization temperature is the temperature at which a material completely recrystallizes within a period of observation. The recrystallization temperature is given, for example, as 40 to 50% of the absolute melting temperature.
Dadurch, dass die Herstellung der Antriebswelle mittels Fließpressen erfolgt, entfallen die bisher erforderlichen Arbeitsschritte des Drehens, Bohrens und Räumens. Mittels Fließpressen wird ein Rohling in einer Form gefertigt, die in etwa bereits dem späteren, funktionsfähigen Zustand des Werkstücks entspricht. Der Rohling kann beispielsweise ein Aufmaß von ca. drei Zehntel im Vergleich zum fertigen, betriebsbereiten Werkstück aufweisen und wird durch Schleifen in seine gewünschte Form gebracht.Because the drive shaft is produced by means of extrusion, the previously required working steps of turning and drilling are no longer necessary and clearing. By means of extrusion, a blank is produced in a shape that roughly corresponds to the later, functional state of the workpiece. The blank can, for example, have an oversize of approx. Three tenths compared to the finished, ready-to-use workpiece and is brought into its desired shape by grinding.
Bei der Fertigung des Rohlings wird der Verbindungsabschnitt in Form z.B. eines Mehrkants bereits in die Antriebswelle eingeformt, so dass zur Herstellung des Verbindungsabschnitts kein zusätzlicher Arbeitsschritt erforderlich ist. Insbesondere entfällt auf diese Weise der Arbeitsschritt des Bohrens und Räumens, der bisher zur Herstellung eines formschlüssig wirkenden Verbindungsabschnitts erforderlich gewesen ist.During the manufacture of the blank, the connecting section in the form of, for example, a polygon is already molded into the drive shaft, so that no additional work step is required to manufacture the connecting section. In particular, the working step of drilling and broaching, which was previously necessary for the production of a positively acting connecting section, is dispensed with in this way.
Die Antriebswelle kann beispielsweise aus einem Kaltstauchstahl gefertigt sein, beispielsweise Werkstoffen mit der Bezeichnung C15E2C (Cq15) oder 33B2 (entsprechend der DIN EN10263). C15E2C weist beispielsweise eine chemische Zusammensetzung von 0,14 % Kohlenstoff (C), 0,15 % Silizium (Si), 0,4 % Mangan (Mn), weniger als 0,02 % Phosphor (P), weniger als 0,02 % Schwefel (S) und weniger als 0,25 % Kupfer (Cu) auf.The drive shaft can for example be made of cold heading steel, for example materials with the designation C15E2C (Cq15) or 33B2 (according to DIN EN10263). For example, C15E2C has a chemical composition of 0.14% carbon (C), 0.15% silicon (Si), 0.4% manganese (Mn), less than 0.02% phosphorus (P), less than 0.02 % Sulfur (S) and less than 0.25% copper (Cu).
Nach der Formung des Rohlings mittels Fließpressen kann das metallische Werkstück in einem zusätzlichen Arbeitsgang durch Aufkohlen behandelt werden. Beim Aufkohlen, auch Carburieren genannt, handelt es sich um ein Wärmebehandlungsverfahren zum Zwecke einer Oberflächenhärtung. Dabei werden in dem Werkstück, insbesondere in äußeren Randschichten des Werkstücks, Kohlenstoffatome ins Metallgitter eingelagert. Anschließend wird die Randschicht bis zu einer Tiefe von ca. 1 mm mittels Induktivhärten gehärtet und auf Endmaß geschliffen. Der Prozess des Aufkohlens kann auch entfallen, falls die Härte des Werkstücks nach dem Kaltfließpressvorgang ausreichend groß ist. In diesem Fall kann unmittelbar nach dem Kaltfließpressvorgang das Schleifen auf Endmaß erfolgen.After the blank has been formed by means of extrusion, the metallic workpiece can be treated by carburizing in an additional operation. Carburizing is a heat treatment process for the purpose of surface hardening. In this case, carbon atoms are embedded in the metal lattice in the workpiece, in particular in the outer edge layers of the workpiece. Then the surface layer is hardened to a depth of approx. 1 mm by means of inductive hardening and ground to the final dimension. The carburizing process can also be omitted if the hardness of the workpiece is sufficiently high after the cold extrusion process. In this case, grinding to final dimensions can take place immediately after the cold extrusion process.
Der Verbindungsabschnitt ist erfindungsgemäß durch einen sich abschnittsweise entlang der Drehachse erstreckten Mehrkant, insbesondere einen Vierkant ausgebildet. Der Verbindungsabschnitt weist somit im Querschnitt zur Drehachse eine mehrkantige, insbesondere vierkantige Form auf, die bewirkt, dass ein Wellenabschnitt, beispielsweise eine flexible Welle, die mit ihrem entsprechend geformten Endabschnitt in den Verbindungsabschnitt eingesteckt wird, formschlüssig in dem Verbindungsabschnitt gehalten und auf diese Weise bei einer Drehbewegung der Antriebswelle mitbewegt wird.According to the invention, the connecting section is formed by a polygon extending in sections along the axis of rotation, in particular a square. The connecting section thus has a polygonal, in particular square, shape in cross-section to the axis of rotation, which has the effect that a shaft section, for example a flexible shaft, which is inserted with its correspondingly shaped end section into the connecting section, is positively held in the connecting section and in this way at a rotary movement of the drive shaft is moved along with it.
Um sicherzustellen, dass mittels der Antriebswelle die im Betrieb auftretenden Verstellkräfte in zuverlässiger Weise übertragen werden können, muss der Außendurchmesser der Antriebswelle so groß gewählt werden, dass die Antriebswelle insbesondere im Bereich des Verbindungsabschnitts nicht ausbricht. Beispielsweise kann der Außendurchmesser der Antriebswelle im Bereich des Verbindungsabschnitts mindestens dem Doppelten der lichten Weite des Verbindungsabschnitts entsprechen. Unter der lichten Weite des Verbindungsabschnitts wird hierbei der Durchmesser eines gedachten, die Innenfläche des Verbindungsabschnitts berührenden Kreises verstanden. Bei Ausbildung des Verbindungsabschnitts als Vierkant entspricht die lichte Weite im Wesentlichen der Kantenlänge des im Querschnitt quadratischen Innenprofils des Vierkants.In order to ensure that the adjustment forces occurring during operation can be reliably transmitted by means of the drive shaft, the outer diameter of the drive shaft must be selected to be large enough that the drive shaft does not break out, particularly in the area of the connecting section. For example, the outside diameter of the drive shaft in the area of the connecting section can correspond to at least twice the clear width of the connecting section. The clear width of the connecting section is understood here to be the diameter of an imaginary circle touching the inner surface of the connecting section. When the connecting section is designed as a square, the clear width essentially corresponds to the edge length of the square inner profile of the square in cross-section.
Dadurch, dass der Außendurchmesser der Antriebswelle mindestens doppelt so groß ist wie die lichte Weite des Verbindungsabschnitts, ergibt sich eine Wandungsstärke der Antriebswelle im Bereich des Verbindungsabschnitts, die größer ist als die halbe lichte Weite des Verbindungsabschnitts. Beträgt der Außendurchmesser der Antriebswelle beispielsweise 8 mm und die lichte Weite des Verbindungsabschnitts 4 mm, so beträgt die Wandungsstärke ca. 2 mm. Dadurch, dass die Wandungsstärke hinreichend stark gewählt wird, können über den Verbindungsabschnitt die erforderlichen Verstellkräfte in zuverlässiger Weise übertragen werden, wobei die Wandungsstärke abhängig von der Größe der maximal auftretenden Verstellkräfte zu wählen und die Antriebswelle somit in geeigneter Weise zu dimensionieren ist.The fact that the outside diameter of the drive shaft is at least twice as large as the inside width of the connecting section results in a wall thickness of the drive shaft in the area of the connecting section that is greater than half the inside width of the connecting section. If the outside diameter of the drive shaft is 8 mm, for example, and the clear width of the connecting section is 4 mm, the wall thickness is approx. 2 mm. Because the wall thickness is chosen to be sufficiently strong, the required adjustment forces can be reliably transmitted via the connecting section, the wall thickness being selected depending on the size of the maximum adjustment forces that occur and the drive shaft thus being dimensioned in a suitable manner.
Ist der Verbindungsabschnitt als Vierkant ausgebildet, so kann die Kantenlänge des quadratischen Profils des Vierkants beispielsweise 3,2 mm betragen. Der Außendurchmesser der Antriebswelle sollte dann mindestens 6 mm betragen.If the connecting section is designed as a square, the edge length of the square profile of the square can be 3.2 mm, for example. The outside diameter of the drive shaft should then be at least 6 mm.
Die Antriebswelle weist zwei Verbindungsabschnitte auf, die an gegenüberliegenden axialen Enden der Antriebswelle in die Antriebswelle eingeformt sind und sich jeweils axial von dem zugeordneten axialen Ende entlang der Drehachse in die Antriebswelle hinein erstrecken. Über die beiden Verbindungsabschnitte kann die Antriebswelle dann mit zwei Wellenabschnitten, insbesondere zwei flexiblen Wellen zur Kopplung mit zugeordneten Verstellgetrieben oder dergleichen verbunden werden, wobei bei einer Drehbewegung der Antriebswelle beide Wellenabschnitte in synchroner Weise zusammen mit der Antriebswelle bewegt und angetrieben werden.The drive shaft has two connecting sections which are molded into the drive shaft at opposite axial ends of the drive shaft and each extend axially from the associated axial end along the axis of rotation into the drive shaft. Via the two connecting sections, the drive shaft can then be connected to two shaft sections, in particular two flexible shafts for coupling with associated adjustment gears or the like, with both shaft sections being moved and driven synchronously with the drive shaft when the drive shaft rotates.
Der Verbindungsabschnitt kann axial direkt in ein axiales Ende der Antriebswelle eingeformt sein, so dass der Verbindungsabschnitt unmittelbar an eine Stirnseite der Antriebswelle anschließt. Denkbar und möglich ist aber auch, dass in die Antriebswelle an einem axialen Ende ein Hohlabschnitt eingeformt ist, so dass die Antriebswelle im Bereich des zugeordneten axialen Endes als Hohlwelle ausgebildet ist. An den Hohlabschnitt kann dann der Verbindungsabschnitt anschließen, so dass sich der Verbindungsabschnitt vom Boden des Hohlabschnitts in die Antriebswelle axial hineinerstreckt.The connection section can be formed axially directly into an axial end of the drive shaft, so that the connection section directly adjoins an end face of the drive shaft. However, it is also conceivable and possible for a hollow section to be molded into the drive shaft at one axial end is, so that the drive shaft is designed as a hollow shaft in the area of the associated axial end. The connecting section can then connect to the hollow section, so that the connecting section extends axially from the bottom of the hollow section into the drive shaft.
Bei geeigneter Dimensionierung des Außendurchmessers der Antriebswelle wird es möglich, die Verbindungsabschnitte mit vergleichsweise großer Tiefe in die Antriebswelle einzuformen, so dass die axiale Tiefe des Verbindungsabschnitts beispielsweise größer als 10 mm, vorzugsweise größer als 13 mm oder gar 15 mm betragen kann. Je größer die axiale Tiefe des Verbindungsabschnitts, desto größer ist die Länge des Wellenabschnitts, über die eine Wirkverbindung mit der Antriebswelle hergestellt wird und desto geringer ist die Flächenpressung im Verbindungsabschnitt.With suitable dimensioning of the outer diameter of the drive shaft, it becomes possible to shape the connecting sections with a comparatively great depth into the drive shaft, so that the axial depth of the connecting section can be greater than 10 mm, preferably greater than 13 mm or even 15 mm, for example. The greater the axial depth of the connecting section, the greater the length of the shaft section via which an operative connection is established with the drive shaft and the lower the surface pressure in the connecting section.
Die Antriebswelle ist Bestandteil der Antriebsvorrichtung und wird im Betrieb angetrieben und in eine Drehbewegung versetzt. Die Antriebswelle ist hierbei mit einem Rotor der Antriebsvorrichtung verbunden, indem beispielsweise Rotorbleche an der Antriebswelle angeordnet und fest mit dieser verbunden sind. Die Antriebswelle läuft in einem Stator der Antriebsvorrichtung um, so dass im Betrieb die Antriebswelle in eine Drehbewegung relativ zu dem Stator versetzt wird und die mit der Antriebswelle gekoppelten Wellenabschnitte zur Übertragung eines Drehmoments mitnimmt.The drive shaft is part of the drive device and is driven during operation and set in rotation. The drive shaft is connected to a rotor of the drive device in that, for example, rotor laminations are arranged on the drive shaft and are firmly connected to it. The drive shaft rotates in a stator of the drive device so that, during operation, the drive shaft is set in a rotational movement relative to the stator and takes along the shaft sections coupled to the drive shaft for the purpose of transmitting a torque.
Der der Erfindung zugrunde liegende Gedanke soll nachfolgend anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert werden. Es zeigen:
-
1 eine schematische Darstellung einer Verstelleinrichtung eines Fahrzeugs; -
2A eine Längsschnittansicht einer Antriebswelle; -
2B eine Draufsicht auf ein erstes Ende der Antriebswelle gemäß2A ; und -
2C eine Draufsicht auf ein zweites Ende der Antriebswelle gemäß2A .
-
1 a schematic representation of an adjusting device of a vehicle; -
2A a longitudinal sectional view of a drive shaft; -
2 B a plan view of a first end of the drive shaft according to FIG2A ; and -
2C a plan view of a second end of the drive shaft according to FIG2A .
Die Verstelleinrichtung
Die Antriebswelle
Die Antriebswelle
Der erste Verbindungsabschnitt
An beiden axialen Stirnseiten der Antriebswelle
Die Verbindungsabschnitte
Die axiale Tiefe
Um bei der mittels Kaltfließpressen hergestellten Antriebswelle
Das Vierkantprofil der Verbindungsabschnitte
Eine flexible Welle
An der Stirnseite der Antriebswelle
Durch Herstellen der Antriebswelle
Um das Werkstück nach dem Schleifen zu härten, kann das Werkstück einer Wärmebehandlung (dem so genannten „Aufkohlen“) unterzogen werden, bei dem äußere Randschichten des Werkstücks mit Kohlenstoff angereichert und auf diese Weise gehärtet werden. Der innere Kern der Antriebswelle
Der der Erfindung zugrunde liegende Gedanke ist nicht auf die vorangehend dargestellten Ausführungsbeispiele beschränkt. Insbesondere kann die Antriebswelle auch lediglich mit einem einzigen Verbindungsabschnitt zur Verbindung mit einem einzigen Wellenabschnitt ausgebildet sein. Der Verbindungsabschnitt muss zudem nicht zwangsläufig als Vierkantprofil geformt sein, sondern kann grundsätzlich beispielsweise auch als Fünfkant oder Sechskant ausgebildet sein, um eine formschlüssige Verbindung eines Wellenabschnitts mit der Antriebswelle herzustellen.The idea on which the invention is based is not limited to the exemplary embodiments presented above. In particular, the drive shaft can also be designed with only a single connecting section for connection to a single shaft section. In addition, the connecting section does not necessarily have to be shaped as a square profile, but can in principle also be designed as a pentagon or hexagon, for example, in order to establish a positive connection between a shaft section and the drive shaft.
BezugszeichenlisteList of reference symbols
- 11
- VerstelleinrichtungAdjusting device
- 1010
- AntriebsvorrichtungDrive device
- 100100
- Rotorrotor
- 11, 1211, 12
- Wellenabschnitt (Flexible Welle)Shaft section (flexible shaft)
- 2, 32, 3
- FührungsschieneGuide rail
- 2020th
- VerstellgetriebeVariable speed gear
- 44th
- Antriebswelledrive shaft
- 40, 4140, 41
- Verbindungsabschnitt (Vierkant)Connecting section (square)
- 400400
- EinführtrichterInsertion funnel
- 401401
- Kerbescore
- 4242
- HohlabschnittHollow section
- 420420
- Einführtrichter Insertion funnel
- 421421
- Kerbescore
- AA.
- DrehachseAxis of rotation
- B1, B2B1, B2
- KantenlängeEdge length
- D, D1, D2D, D1, D2
- Durchmesserdiameter
- T1, T2, T3T1, T2, T3
- Tiefedepth
Claims (10)
Priority Applications (2)
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DE102012208128.3A DE102012208128B4 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft and method for producing an adjusting device |
DE202012013635.6U DE202012013635U1 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft |
Applications Claiming Priority (1)
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DE102012208128.3A DE102012208128B4 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft and method for producing an adjusting device |
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DE102012208128A1 DE102012208128A1 (en) | 2013-11-21 |
DE102012208128B4 true DE102012208128B4 (en) | 2021-10-21 |
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DE202012013635.6U Expired - Lifetime DE202012013635U1 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft |
DE102012208128.3A Active DE102012208128B4 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft and method for producing an adjusting device |
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DE202012013635.6U Expired - Lifetime DE202012013635U1 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft |
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EP3315800B1 (en) * | 2016-10-31 | 2019-08-28 | Andreas Stihl AG & Co. KG | Drive shaft in a hand-held work device |
DE102022104330A1 (en) | 2022-02-23 | 2023-08-24 | Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg | Vehicle seat assembly with two vehicle seats that can be spaced apart transversely |
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- 2012-05-15 DE DE202012013635.6U patent/DE202012013635U1/en not_active Expired - Lifetime
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DE202012013635U1 (en) | 2018-10-30 |
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