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
  • F16H57/00—General details of gearing
  • F16H57/02—Gearboxes; Mounting gearing therein
  • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
• • 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
  • F16H57/00—General details of gearing
  • F16H57/08—General details of gearing of gearings with members having orbital motion
• • 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
  • F16H1/00—Toothed gearings for conveying rotary motion
  • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
  • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
• • 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
  • F16H57/00—General details of gearing
  • F16H57/08—General details of gearing of gearings with members having orbital motion
  • F16H57/082—Planet carriers
• • 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
  • F16H1/00—Toothed gearings for conveying rotary motion
  • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
  • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
  • F16H2001/326—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising a carrier with linear guiding means guiding at least one orbital gear

Definitions

• the invention relates to a transmission according to the preamble of claim 1.
• a transmission with an internal toothing and a rotation axis having cup-shaped base body is known.
• the output member comprises a rotary body with a circular cross-section to the axis of rotation.
• two gears meshing with the internal gear and means for converting planetary movements of the gears are arranged in rotational movements of the output member.
• the input member is mounted in the rotating body and in the ground, the rotating body in the base body and on the gang organ.
• EP 0 474 897 A1 discloses a transmission with a main body having internal teeth.
• a driven input shaft and an output shaft are rotatably mounted.
• An output member is axially slidably connected to the output shaft.
• the output member comprises two spaced apart rotary body with a transverse to the input and output shaft circular cross-section.
• the input and output shafts are perpendicular to the two rotating bodies.
• the rotary bodies are firmly connected or connected to each other. Between the rotating bodies two gear wheels meshing with the internal gear and means for converting planetary movements of the gears are arranged in rotational movements of the output member.
• the output member is bearing-free supported by means of the internal teeth meshing gears relative to the main body in the radial direction.
• a support of the output member relative to the main body in the axial direction does not exist or is also designed free of bearings, so that axial movements of the output member are stopped only by contact with a cover or the main body or with the flank of the internal teeth.
• a disadvantage of this is the low performance of the transmission in conjunction with high expected wear by the bearing free in the main body arranged output member.
• a transmission with an internal toothing and a rotation axis having hohizylinderartigen body with faces is known.
• the output member comprises two spaced apart rotary body with a transverse to the axis of rotation circular cross-section.
• the axis of rotation is perpendicular to the two rotating bodies.
• the rotary Bodies are firmly interconnected or connected. Between the rotating bodies at least one gear meshing with the internal gear and means for converting planetary movements of the gear are arranged in rotational movements of the output member.
• the input member is mounted on both sides in the rotating bodies of the output member, which in turn is mounted on both sides in the hollow cylinder-like base body.
• Both rotary bodies are mounted directly on or in the main body, with the result that a force holding the two rotary body simultaneously acting on the bearing of the two rotary body. As a result, it comes to tensions of storage, increased wear and heating and in the worst case to a blocking of the transmission.
• the assembly of the transmission designed as cumbersome because the arranged between the rotating bodies parts must be introduced when a rotary body is already arranged in the base body.
• acting on the transmission in particular acting in the axial direction external forces are transmitted to the interior of the transmission and there lead to alternating loads and fatigue.
• the storage is designed so that in each case a radial bearing in each case supports a rotary body relative to the rotational axis acting normal to radial forces on one end face on the base body.
• a thrust bearing in each case supports one of the two rotary bodies arranged on both sides of the base body in each case opposite to axial forces directed toward the base body in the direction of the axis of rotation at one end face of the base body.
• the input member is mounted in principle the same way to the rotating bodies.
• the thrust bearing which support the input member in the rotating bodies against axial forces, however, are arranged exactly the reverse, as the thrust bearing for supporting the rotary body relative to the main body.
• the input member is mounted by means of an axial bearing on the two rotating bodies, which in each case to the input organ in the direction of the axis of rotation away from the main body acting axial forces on the outside in the direction of force arranged on the main body rotating body transfers.
• combined radial-axial bearings can perform both functions simultaneously.
• the two rotary bodies of the output member by means of connecting elements, such as screws, releasably connected to each other.
• the connecting elements fulfill several functions. On the one hand, they ensure that the same rotational speeds and identical torques are applied to the two output sides formed by the two rotary bodies, regular working sides, of the gearbox.
• the connecting elements connect the rotating bodies together, they hold to the other also in the base body along the axis of rotation between the rotating bodies lying parts of the transmission together.
• These parts are essentially one or more gear wheels driven by the input member in an eccentric motion meshing with the internal gear, the input member itself, and the means for converting planetary motion of the gear or gears into rotational movements of the output member.
• the connecting elements transmit axial forces acting on the input member and / or the output member to the rotary body whose axial bearing is capable of transmitting the respective axial forces to the base body in turn.
• Such axial forces or pairs of axial forces can also be generated, for example, by moments acting on the input and / or output member transversely to the axis of rotation.
• the connecting elements prevent the arranged between the output member and input member and between the output member and body bearing from falling apart by pressing the rotating body against the frontal running surfaces of the body. If a particularly high smoothness and high transmission and transmission quality of the drive power to be achieved from the drive to the output side, so arise from the multiple function of the connecting elements particular difficulties.
• the connecting elements compress the two rotating body with a bias, otherwise these forces could pull the rotating body apart. If the rotary bodies were pulled apart, a safe and precise operation of the transmission, which in most cases matters crucially, would no longer be guaranteed.
• the generation of a correspondingly large bias requires a correspondingly large dimensioning of the connecting elements.
• large-sized fasteners require space and increase the weight of such a transmission.
• the bearings between the input member and the rotating bodies and between the rotating bodies and the base body must not be compressed too much in the axial direction due to the prestressing.
• the invention has for its object to remedy this situation and in particular the generic gear without undue constructive effort so on to form that with a simpler manufacture of the items and assembly of the transmission higher torsional strength and higher power density is achieved with the same dimensions.
• the object is solved by the features of claim 1.
• An inventive transmission accordingly comprises an inner toothing and a rotation axis having hollow-cylindrical basic body with end faces.
• a driven input member and an output member are rotatably mounted in the main body.
• the output member comprises two non-rotatably connectable or connected rotary body.
• the rotary bodies have a circular cross-section transverse to the axis of rotation.
• Between the rotating bodies at least one gear is arranged.
• the gear meshes preferably with the internal toothing.
• Between the rotating bodies means for converting planetary movements of the gear are arranged in rotational movements of the output member.
• the forces holding together the output member are independent of the bearing forces acting between the output member and the main body.
• the output member co-operating axial forces between the rotating bodies of the output member are applied or applied.
• the acting between the output member and the body axial bearing forces are or are applied between only one of the two rotating body of the output member and the body.
• the axial forces that hold together the output member are or are preferably applied by means acting between the rotating bodies of the output member.
• the axial bearing forces acting between the output member and the base body are or are preferably applied by means acting only on one of the two rotary body of the output member means.
• the invention is in any case realized if in a conventional planetary gear, the compact output member is mounted with two regularly parallel and spaced rotating bodies so that of the two rotating bodies only a single rotating body is mounted directly in or on the body.
• the two rotary bodies form the two end faces of the output element and of the main body.
• the external forces acting on the output member during operation of the transmission, at least in the axial direction, are taken over almost completely by the rotary body mounted directly in or on the main body.
• the other rotary body located on the other side of the main body is practically not exposed to external forces and in particular is not exposed to external forces acting at least in the axial direction. This rotary body is also not in working contact with the main body.
• the rotary body regularly acting on the connecting means static force to hold together the unitary output device In this constellation, it is ensured that the external work forces acting at least in the axial direction on the rotary body mounted directly on or in the main body are not transmitted to the other rotary body. This has the consequence that the only areas of the transmission, which must be machined with high precision, provided for the storage of the output member contact and running surfaces of the body, the directly on or in the main body mounted rotary body and the holding body.
• Another advantage of the inventive measures is that markedly increased by the particular positioning of the bearing elements of the active interior of the transmission and thus the performance of the transmission with unchanged external dimensions and significantly lower weight is significantly increased.
• the main idea of the invention is applicable to all types of planetary gearboxes.
• preferably only one of the rotary bodies is preferably mounted directly in the main body at least with respect to axial forces.
• it is preferably provided with a front side firmly connectable, ring-like holding body on which the directly mounted on the main body rotary body is supported by bearing means.
• the holding body may preferably be formed as a thick-walled and easily machinable pipe section, whose two end faces only need to be ground smoothly and provided with suitable openings for screws.
• the rotary body mounted directly on the main body can moreover be supported on the main body with the same or with other bearing means.
• the transmission according to the invention also has the advantage over the prior art that the connecting elements, usually screws, are largely load-free as a result of the one-sided support of the output member in the area of only one rotary body, at least with respect to axial forces.
• a power transmission from the mounted rotary body to a frame carrying the gear is now under complete circumvention of the now unrelated at least with respect to axial forces, second rotary body and thus bypassing the two rotary bodies interconnecting fasteners instead.
• the transmission according to the invention additionally has the advantage that it is much easier to manufacture and assemble.
• bearing means for supporting the rotary bodies directly on or in the base body and for supporting at least with respect to axial forces only have to be arranged on one side of the base body. Since these bearing means are preferably the only connection of the arranged between the rotating bodies parts and the body, the transmission according to the invention can be conveniently prepared in successive steps. First of all, all the parts lying between the rotating bodies can be mounted and positioned by connecting the two rotary bodies to one another. Subsequently, the complete block of rotary bodies and arranged therebetween parts can be arranged in the main body. It is no longer necessary, as in the prior art, that the rotating bodies and the parts arranged therebetween must be mounted in the base body. According to the invention, for example, the bearing means between the base body and the mounted rotary body must be introduced only in the assembly of the pre-assembled block in the body. As a result, the assembly time is shortened and there are fewer assembly errors.
• the means for the conversion of planetary movements of the gear in rotational movements of the output member for example, as described in WO 95/22017, a displaceable in two orthogonal directions between gear and rotating bodies transformation element in the form of a cross.
• the means for converting planetary movements of the toothed wheel into rotational movements of the output member may comprise eccentric annular sleeves, which are arranged between recesses on the toothed wheel or on the revolving body and on the revolving body or on the toothed wheel, into the recesses on the toothed wheel or on the rotary body projecting pins are arranged to be. It is important to emphasize that one of the rotary body is preferably rotatably mounted directly on or in the main body for attachment of the output member to the base body.
• one of the rotary bodies may be rotatably mounted for support at least opposite axial forces directly on or in the main body, whereas the other rotary body is not supported on or in the main body, or is rotatably supported only indirectly on or in the main body, or is rotatably mounted directly on or in the main body only to support against radial forces.
• One of the rotary bodies may preferably be rotatably mounted directly on or in the main body both for support against axial forces and for support against radial forces.
• the rotary body mounted rotatably directly on or in the base body is supported via bearing means on the holding body which can be firmly connected or connected to the one end face.
• An advantageous embodiment of the invention provides that the bearing means are arranged in the region of that end face on which the holding body is arranged. In this way, the production of a transmission according to the invention over the prior art is achieved both by a significantly improved and easier accessibility of the raceways for the rolling elements of the bearing means, as well as by a simplified positioning of the rolling elements of the bearing means in the completion of the transmission according to the invention.
• Another advantageous embodiment of the invention provides that are provided at least on the directly mounted on or in the base body rotating body and in the body raceways for the bearing means of the rotary body in the main body forming rolling elements, for example in the form of planes and / or grooves with polished and hardened surfaces ,
• An additional, advantageous embodiment of the invention provides that at least the bearing means, as well as preferably associated running surfaces, for supporting the mounted directly on or in the body rotary body opposite in the axial direction toward the internal teeth extending forces in the region of an agent, which the conversion of planetary motions the gear is used in rotational movements of the output member and which is arranged on the same side of the internal toothing as the directly mounted on or in the main body rotary body, are arranged offset radially outward.
• a resulting advantage is that by creating the bearing means forming rolling elements in the region of, for example, a transformation element which converts the planetary motion of the gear in rotational movements of the output member, radially outward, created a transmission with particularly compact external dimensions and in particular with a short overall length becomes.
• a particularly advantageous embodiment of the invention provides that at least the bearing means and preferably associated, around the axis of rotation closed running surfaces, which are provided for supporting the mounted directly on or in the base body rotating body with respect to extending in the axial direction forces, compared to a means which is the conversion of planetary movements of the gear in rotational movements of the output member is used and which is arranged on the same side of the internal teeth as the directly mounted on or in the main body rotating body, offset in the direction of the axis of rotation away from the internal teeth.
• a resulting result part is that there is an increase in the available interior space for lying between the rotating bodies moving parts.
• the bearing means are formed as spherical rolling elements, which support the mounted directly on or in the main body rotary body both in the axial and in the radial direction, and which in a common, through the holding body,
• the annular space formed in the area of the end face, on which the holding body is arranged, is arranged in the base body, as well as in the rotating body mounted directly on or in the main body and circumscribed around the rotational axis.
• bearing means are formed as cylindrical rolling elements, which support the mounted directly on or in the main body rotating body both in the axial and in the radial direction, and which in a common, by on the holding body, the base body, as well as the directly mounted on or in the main body rotating body formed, each inclined by 45 ° relative to the rotation axis, closed around the axis of rotation encircling tread limited annular space in the region of the end face on which the holding body is arranged are arranged.
• cylindrical rolling elements in contrast to spherical rolling elements endure higher loads, since they rest not punctiform, but linear on the respective associated treads.
• the gear on its an unavailable or only indirectly on or stored in the body or just to support against radial forces directly on or in the body mounted rotary body side facing a lid having the moving parts inside the Gearbox protects against contamination.
• the lid has a central opening through which the input member is guided, for example for connection to a drive motor.
• a tread for bearing body is formed on the lid, with which the input member is mounted on its an unavailable or only indirectly on or in the base body mounted or mounted only to support against radial forces directly on or in the body rotary body side facing the cover.
• This ensures that no axial forces act on the unsupported rotary body, which likewise ensures that the connecting elements connecting the two rotary bodies with each other do not have to transmit any axial forces between the rotary bodies.
• Between directly mounted on or in the body rotating body and holding body may preferably be provided a circumferential seal, which prevents the ingress of impurities in the transmission on the output side.
• the loads on the driven side are greater than on the drive side, which is why it is advantageous to form the driven side on the mounted rotary body 50, since so the forces acting on the bearing means moments and the resulting pairs of forces are smaller.
• FIG. 1 is a schematic representation of a first embodiment of a transmission according to the invention in a cross section
• 1a is a section along the line A-A of FIG. 1,
• 1 b is a section along the line B-B of FIG. 1,
• 1c is a section along the line C-C of FIG. 1,
• Fig. 1d is a perspective view of a gear of the transmission
• Fig. 1, 1e is a perspective view of a first part of an output member forming the first rotary body of the transmission of Fig. 1,
• FIG. 1f is a perspective view of a second part of an output organ forming second rotary body of the transmission of FIG. 1,
• Fig. 1g is a perspective view of a transformation element of
• FIG. 2 is a schematic representation of a second embodiment of a transmission according to the invention in a cross section
• FIG. 2a is a section along the line A-A and B-B of FIG. 2,
• FIG. 3 is a schematic representation of a third embodiment of a transmission according to the invention in a cross section
• FIG. 4 is a schematic representation of a fourth embodiment of a transmission according to the invention in a cross section
• FIG. 5 is a schematic representation of a fifth embodiment of a transmission according to the invention with flanged drive motor
• FIG. 6 shows a first embodiment of the detail VI of FIG. 5,
• Fig. 8 shows the detail VIII of Fig. 1 b, as well 9 is an exploded view of the transmission of FIG .. 5
• the gears shown completely or partially in FIGS. 1 to 9 all consist of a hollow-cylinder-like basic body 40 having an internal toothing 41 and an axis of rotation 40a with end faces 49, in which a driven input member 10 and an output member are rotatably mounted.
• the output member comprises two rotary bodies 50, 50 ' .
• the rotary bodies are essentially disc-shaped.
• the disc-shaped parts of the rotary bodies 50, 50 ' are arranged at a distance from each other.
• the rotary bodies 50, 50 ' are firmly connected or connected to one another.
• the rotary bodies 50, 50 ' have a circular cross section transverse to the axis of rotation 40a. Between the rotary bodies 50, 50 ' two gears 30 are arranged.
• the gears 30 mesh with their external teeth 33 with the internal teeth 41 of the main body 40.
• Between the rotary bodies 50, 50 ' are also means for converting planetary movements of the gears 30 arranged in rotational movements of the output member.
• only one of the two rotary bodies 50, 50 ' is mounted directly in the main body 40.
• a fixedly connected to the front side 49, ring-like holding body 40 ' is provided.
• the rotary body 50 is supported by rolling elements 43a, 43b, 43c (FIGS. 1 and 9) and 43a, 43r (FIG. 43g (FIG. 3) 43d, 43e (FIG. 4), both in the axial direction and in the radial direction, directly on the base body 40 and on the holder body 40 ' arranged on the front side 49.
• An input member 10 in the form of an input shaft has two eccentric portions 17 which are offset by 180 ° from each other.
• the eccentric portions 17 are offset by an eccentricity e with respect to the rotation axis 40a.
• On each of the eccentric portions 17 is a Gear 30 rotatably mounted.
• the eccentricity e thus corresponds to the distance between the axis 30a of the gear 30 and the rotation axis 40a of the base body 40.
• Between the eccentric portions 17 and the gears 30 are arranged to reduce the friction rolling elements 12, which roll on the outer periphery of the eccentric portions 17.
• 17 raceways for the rolling elements 12 are formed on the circumference of the eccentric portions, which serve as a bearing body for the gears 30.
• the gears 30 have external teeth 33 and central openings with inner raceways 31 for the rolling elements 12.
• the gears 30 have a plurality of radially extending from the inner tread 31 having central opening staggered, arranged through axial openings 32, which are each uniformly distributed around the axes 30a of the gears 30.
• the axes 30a of the gear wheels 30 run parallel to the axis of rotation 40a of the input member 10 and of an output member formed by two rotary bodies 50, 50 ' .
• the axis of rotation 40a is at the same time the axis of symmetry of the main body 40.
• the input member 10 is, as shown in Fig. 5, connected by means of a spring not shown with a motor shaft of a drive motor 8.
• the drive motor 8 is connected to the formed as a ring gear body 40 with internal teeth 41 by means of a cover 94 and screws, not shown.
• the drive motor 8 is arranged on the side of the transmission remote from the rotary body 50 mounted in the main body 40. This side forms the drive side, whereas the mounted in the base body 40 rotary body 50 forms the output side of the transmission.
• the gears 30 are arranged in the middle between the two with circular outer contour or with a transverse to the axis of rotation 40 a circular cross section formed rotary bodies 50, 50 ' , which are releasably connected to each other by connecting elements 60, 62 and together form the output member of the transmission.
• spacer bodies 52 are arranged, which have openings 53a, 53b and threaded seats 59a, 59b for receiving the connecting elements 60, 62.
• the spacers 52 pass through the openings 32 of the gears 30 without contact, so that the rotating bodies 50, 50 ' can be fixedly connected to one another by the toothed wheels 30.
• the output member formed by the two interconnected rotary bodies 50, 50 ' is rotatably mounted with respect to the base body 40 with internal teeth 41 about the axis of rotation 40a.
• the internal teeth 41 of the base body 40 mesh with the external teeth of the gears 30.
• the axes of the gears 30 are arranged parallel to the axis of rotation 40a of the base body 40, but offset by the eccentricity e.
• the rotary bodies 50, 50 ' are provided with guide tracks 54a, 54b which define a linear guide 50b.
• the linear guide 50b is oriented transversely to the axis of rotation 40a of the rotary bodies 50, 50 ' .
• Each gear 30 is provided with guide tracks 34a, 34b which define a linear guide 30b, this linear guide 30b being oriented transversely to the axis 30a of the gear 30.
• the transformation element 70 has guide surfaces 74a, 74b and 75a, 75b in two orthogonal directions, which correspond to the linear guides 50b and 30b of the respective rotary body 50, 50 ' and the gear 30, respectively, such that the transformation element 70 faces the respective rotary body 50, 50 ' on the one hand and relative to the gear 30 on the other hand slidably disposed in two mutually perpendicular directions.
• the one linear guide 50b is formed on the rotary body 50 or 50 ' , while the transformation element 70 is slidably disposed in the other direction in the linear guide 30b on the gear 30.
• Both rotary body 50, 50 ' and the transformation elements 70 have central openings 51, 51 ' and 71, respectively.
• the input member 10 is at its two ends in the central openings 51, 51 'of the rotary body 50, 50 ' stored.
• the central openings 51, 51 ' form on their inner surfaces raceways for bearing body 3.
• the ends of the input member 10 in the central openings 51, 51 ' of the rotary body 50, 50 ' are mounted.
• the input member 10 passes without contact through the opening 71 of the transformation element 70.
• the inner diameter of the opening 71 is in this case by at least 2e greater than the outer diameter of that portion of the input member 10 which passes through the opening 71.
• the guideways 54a and 54b with which each rotary body 50, 50 'is provided, are formed on the opposite sides of the protrusions 55a and 55b.
• the projections 55a and 55b are formed as axisymmetric pairs and arranged on the end face of the respective rotary body 50, 50 ' .
• the guideways 54a and 54b are formed directly on the protrusions 55a and 55b of the rotary bodies 50, 50 ' . They may also be formed as flat strips, which may be attached to the opposite sides of the projections 55a, 55b.
• the guideways 34a, 34b, with which each gear 30 is provided, are formed on the opposite sides of the protrusions 35b. They are formed by centrally opposed pairs, which are formed on the end face of the gear 30.
• the axial openings 32 of the gear 30 are arranged on a circular arc evenly distributed between the projections 35a, 35b.
• the guideways 34 a, 34 b are formed directly on the projections 35 a, 35 b of the gear 30. However, they may also be formed as flat strips which are fixedly formed on the opposite sides of the projections 35a, 35b.
• the transformation element 70 comprises an annular, central portion 73 and four arms 74 arranged on the annular, central portion 73.
• An opening 71 is arranged in the annular central portion 73, through which the input member is passed without contact.
• the one pair of opposing arms 74 has guideways 75a, 75b through which the transformation element 70 in the Linear guide 50b of the rotary body 50 is slidably disposed.
• the second pair of opposing arms 74 also has parallel tracks 74a, 74b through which the transformation element 70 is slidably disposed in the linear guide 30b of the gear 30.
• cylindrical rolling elements 80 are arranged between the guide tracks 54a and 54b of the linear guide 50b of the rotary body 50 and the guide tracks 75a, 75b of the transformation element 70, through which the transformation element 70 is slidably disposed in the linear guide 50b.
• cylindrical rolling elements 90 are also arranged between the guide tracks 34a and 34b of the linear guide 30b on the gear 30 and the guide tracks 74a, 74b of the transformation element 70, through which the transformation element 70 is slidably disposed in the linear guide 30b.
• a guide of the transformation element 70 is ensured by means of rolling elements 80, 90, when it relative to the gear 30 and relative to the rotary body 50 and the rotation axis 40a oscillatory movements.
• boundary surfaces 76, 76 ' which delimit the movement of the rolling elements 80, 90, are formed on the arms 74 of the transformation element 70.
• Fig. 8 for this purpose is shown in detail, as the rolling elements 80, 90 are arranged between the formed on the arms 74 guideways 74a, 74b and 75a, 75b in the assembled state.
• the interfaces 76, 76 ' limit the effective length l of the guideways 74a, 74b and 75a, 75b, respectively, on the arms 74 along which the rolling elements 80, 90 can move, w indicates the width of an arm 74.
• the inner circle 41 pc of the inner toothing 41 extends through the axes of symmetry of the needle-shaped rolling elements 41 b arranged in the axial grooves 41 a.
• the outer circle 41 fc of the internal teeth 41 extends through the bottom of the axial grooves 41 a.
• the internal teeth 41 of the base body 40 consists of needle-shaped rolling elements 41 b, which are mounted in axial grooves 41 a on the inner circumference of the base body 40.
• the axial grooves 41 a are evenly distributed on the inner circumference of the main body 40.
• the spacers 52 are arranged. These spacers 52 traverse with play the axial openings 32 of the gear 30, wherein they are provided with axial receptacles 53a, 53b and threaded receptacles 59a, 59b.
• the receptacles 53a, 53b and the threaded receptacles 59a, 59b are provided for receiving the connecting elements 60, 62.
• the connecting elements are designed as pins 62 and screws 60 (FIG. 9). By tightening the connecting elements 60 designed as screws 60, the end faces of the spacers 52 define the position of the two rotary bodies 50, 50 ' .
• the rotary body 50 In contrast to the rotary body 50 ' , which is not mounted directly on the main body 40, the rotary body 50 is supported directly by bearing means both axially relative to the main body 40 radially in the direction normal to the axis of rotation 40a, and with respect to the base body 40 and the retaining body 40 ' axially in the direction of the axis of rotation 40a ,
• the bearing means comprise an immediate rolling bearing 42 of the rotary body 50 in the base body 40.
• On the end face 49 of the base body 40 openings 47 are arranged for fastening means 95, with which the holding body 40 ' on the base body 40 can be fastened.
• the roller bearing 42 is formed in the transmission shown in Figs. 1, 1a, 1 b, 1c, 5 and 9 by cylindrical rolling elements 43a, 43b, 43c formed on the base body 40, the rotary body 50 and the holding body 40 ' to the Rotate axis 40a closed circumferential treads 42a, 42b, 50c, 5Od, 40 ' a roll.
• the rolling elements 43a are arranged between the running surface 42a and the inner toothing 41 facing the running surface 50c of the rotary body 50.
• the running surface 42a forms an annular step-shaped shoulder which terminates perpendicular to the axis of rotation 40a approximately flush with the internal teeth 41.
• the running surface 50c, on which the rolling elements 43a roll directly on the rotary body 50, is the outer ring of the surface of the rotary body 50 facing the internal toothing, normal to the rotation axis 40a.
• the axes 43a1 of the cylindrical rolling elements 43a run perpendicular to the axis of rotation 40a of the Rotary body 50.
• the rolling elements 43b are arranged between the running surface 40 ' a and the inner toothing 41 facing away from the running surface 50c of the rotary body 50.
• the running surface 40 ' a is the inner ring of the rotating body 50 facing, planar surface of the holding body 40 ' , which is normal to the axis of rotation 40 a.
• the running surface 50c on which the rolling elements 43b roll on the rotary body 50 is an annular surface normal to the rotation axis 40a of a stepped step on the side of the rotating body 50 facing away from the internal teeth.
• the axes 43b1 of the cylindrical rolling elements 43b are also perpendicular to the rotation axis 40a of the rotating body 50th
• the rolling elements 43a and 43b support the rotary body 50 directly opposite the main body 40 and opposite the holding body 40 ' in both axial directions.
• the rolling elements 43c are arranged between the running surface 42b running around the rotation axis 40a and the side of the rotation body 50 facing away from the internal toothing 41, likewise running around the rotation axis 40a 5Od of the rotary body 50 is arranged.
• the running surface 42b is a cylinder inner lateral surface extending parallel to the rotation axis 40a in the axial direction on the inner side of the base body 40 facing the rotating body 50.
• the running surface 5Od is formed by a cylinder outer circumferential surface which faces away from the inner toothing 41 Rotary body arranged paragraph is formed on the rotating body.
• the shafts 43c1 of the cylindrical rolling elements 43c are parallel to the rotational axis 40a of the rotary body 50.
• the rolling elements 43c support the rotary body 50 with respect to the main body 40 in the radial direction.
• the rolling elements 43a are arranged in a bearing cage 45.
• all rolling elements 43a, 43b, 43c are arranged in bearing cages which space the rolling elements 43a, 43b, 43c from one another so that no friction losses can occur between them.
• rolling elements 43a, 43b, 43c conventional, proven and can be produced in mass production with high precision parts, namely cylindrical rolling elements are used, which require no individualization.
• the input member 10 has a coaxial with the axis of rotation 40a extending through opening 4.
• This opening 4 can at the same time as indicated in Fig. 5, serve for receiving and / or connection to a drive shaft of a drive motor 8.
• the cylinder-shaped rolling elements 43 a are arranged offset radially outwards in the region of the transformation element 70.
• a particularly space-saving design is achieved, which has particularly short and compact dimensions, especially in the axial direction. Since offset at the height of the cylindrical rolling elements 43 a radially inwardly the transformation element 70, which does not perform a pure rotational movement about the rotation axis 40a, but a combination of rotational movement about the rotation axis 40a and linear movements normal to the rotation axis 40a, the cylindrical rolling elements 43a can not be held by the transformation element 70 at their positions on the inner circumference of the base body 40.
• annular support body 46 which is arranged between rotary body 50 and toothed wheel 30, is provided, which holds the cylindrical rolling elements 43a in their positions.
• the cylindrical rolling elements 43a are arranged in a bearing cage.
• a further special feature of the transmission illustrated in FIGS. 1, 1 a, 1 b, 1 c, 5 and 9 is that the cylindrical rolling elements 43 b and 43 c, which rotate in the radial direction and in the reverse axial direction, like the cylindrical rolling elements 43a are supported, in a common, by the treads 40 ' a, 42b, 50c and 5Od limited annular space are arranged.
• the transmission shown in FIGS. 2 and 2a is a more robust embodiment than in the case of the transmission shown in FIGS. 1, 1a, 1b, 1c, 5 and 9. This is achieved, on the one hand, by virtue of the fact that both in a first annular space delimited by running surfaces 40 ' a, 42b, 50c and 50d and in a second annular space delimited by running surfaces 42a, 42b, 50c and 50d, both cylindrical rolling elements 43r are provided for direct radial Supporting the rotary body 50 on the base body 40, as well as cylindrical rolling elements 43 a for the direct axial support of the rotary body 50 on the base body 40 and on the holding body 40 ' are arranged.
• the function of the rolling elements 43r corresponds to that of the rolling elements 43c in FIGS. 1, 1a, 1b, 1c, 5 and 9.
• the axes of the cylindrical rolling elements 43a run perpendicular to the axis of rotation 40a, whereas the axes of the cylindrical rolling elements 43r are parallel to the axis Rotary axis 40a run.
• Both annular spaces are formed by a common step-shaped shoulder formed by the running surfaces 42a and 42b, which is spaced apart from the internal teeth 41 of the base body 40 by the width of the transformation element 70. borders.
• the rolling elements 43a for direct support of the rotary body 50 on the base body 40 and on the holding body 40 ' with respect to axially extending forces against the arranged on the same side of the internal teeth 41 as the rotary body 50 transformation element 70 in the direction of the rotation axis 40a away from the internal teeth 41 arranged offset.
• a resulting advantage is that, by the rolling elements forming the bearing means are axially offset and displaced outwards relative to the arranged between the rotary bodies 50, 50 ' parts, resulting in an increase of the movable parts between the rotary bodies 50, 50th ' available interior space results.
• the transmission can be made more robust with the same outer diameter or with the same outer dimensions, because the transformation elements 70 in the base body 40 is a larger space in the radial direction available.
• spherical rolling elements 43g are used instead of cylindrical rolling elements 43a, 43b, 43c, 43r, which are arranged in a correspondingly shaped annular space delimited by the holding body 40 ' , the base body 40 and the rotary body 50.
• the spherical rolling elements 43g in conjunction with the correspondingly shaped annular space are able to support the rotary body 50 both in the axial and in the radial direction directly on the main body 40 and on the holding body 40 ' .
• the annular space is bounded by concavely curved running surfaces 40 ' a, 42a, 50c, 50d that are closed around the axis of rotation.
• the running surfaces 40 ' a, 42a, 50c, 50d are in this case inclined by about 45 ° with respect to the axis of rotation 40.
• the running surface 40 ' a is therefore a concave surface on the holding body 40 ' directed obliquely to the axis of rotation 40a and to the internal teeth 41.
• the running surface 42a is therefore a concave surface on the base body 40 directed obliquely with respect to the rotation axis 40a and away from the internal toothing 41.
• the running surface 50c in the present embodiment is therefore according to an obliquely directed from the rotation axis 40a and the internal teeth 41 away, concave surface on the rotary body 50.
• the tread 5Od is in the present embodiment, an obliquely away from the axis of rotation 40a and the base body 40 directed, concave surface on the rotary body 50th
• An advantage resulting from this embodiment is that only a single annular space is required to direct all axial and radial forces acting on the rotary body 50 via common rolling elements 43g directly to the base body 40 and to the base body 40 via the fastening means 95 Holder body 40 ' to transfer.
• cylinder-shaped rolling elements 43d, 43e are provided for the direct support of the rotary body 50 both in the axial direction and in the radial direction relative to the base body 40 and the holding body 40 ' .
• the rolling elements 43d, 43e are arranged in an annular space which is inclined by 45 ° with respect to the axis of rotation 40a and has a quadratic cross-section, revolving around the axis of rotation 40a.
• the axes 43d1 and 43e1 of the rolling elements 43d and 43e are inclined in opposite directions by 45 ° with respect to the axis of rotation 40a.
• the annular space is limited by holding body 40 ' , the base body 40, and the rotary body 50.
• the running surface 40 ' a is in the present embodiment, therefore, a 45 ° obliquely with respect to the rotation axis 40a, the rotation axis 40a and the internal teeth 41 directed towards, flat surface on the holding body 40 ' .
• the running surface 42a is in the present embodiment, therefore, a 45 ° obliquely with respect to the rotation axis 40a, to the rotation axis 40a and directed away from the internal teeth 41, flat surface on the base body 40.
• the tread 50c is in the present embodiment, therefore, a 45 ° obliquely with respect to the axis of rotation 40a, from the axis of rotation 40a and from the internal teeth 41 directed away, flat surface on Drehkör- per 50.
• the running surface 5Od in the present embodiment is therefore an inclined surface 45 ° obliquely with respect to the rotation axis 40a, away from the rotation axis 40a and towards the base body 40, on the rotary body 50.
• An advantage resulting from this embodiment is that only a single annular space is required to transfer all acting on the rotary body 50 axial and radial forces via rolling elements 43d, 43e directly to the base body 40 and the connected to the base body 40 via the fastening means 95 holding body 40 ' ü.
• An advantage over the embodiment according to FIG. 3 is that the cylindrical rolling elements 43d, 43e, in contrast to the spherical rolling elements 43g, bear higher loads because they do not rest punctiformly but linearly on the respectively assigned running surfaces
• FIGS. 5 and 9 A further embodiment of the transmission is shown in FIGS. 5 and 9.
• a cover 94 is provided on the drive side on which in Fig. 5 is arranged with its motor shaft connected to the input member 10 drive motor 8, which protects the moving parts in the interior of the transmission from contamination.
• the cover 94 in this case has a shoulder, which is formed by a step-shaped taper on its outer periphery. This stepped taper fits positively in the inner diameter of the base body 40.
• the cover 94 closes at its outer periphery flush with the outer periphery of the body
• the lid 94 has a central opening through which the input member
• a circumferential seal 93 which prevents the ingress of impurities in the transmission on the output side.
• a running surface 91 can be formed for the bearing bodies 3, with which the input member 10 instead of the unsupported or not directly on the base body 40 mounted rotary body 50 ' , such as provided in FIGS. 1 to 4, is mounted on the cover 94.
• the input member 10 is supported on the bearing body 3 instead of on the non-stored or not directly on the base body 40 mounted rotary body 50 ' on the base body 40 connected to the lid 94.
• the fastening means 95 can be used for fastening the holding body 40 ' on the base body 40 at the same time for fastening the gearbox to the frame 1.
• the step 44 is formed by an outer end face 44a and a peripheral lateral surface 44e.
• an inner centering surface 44i is provided for centering a cover 94.
• the centering surface 44i may be formed as shown in FIGS. 6 and 7.
• the inner centering surface 44i is formed as a phase on the inner circumferential surface of the main body 40.
• the lid 94 is particularly simple, since self-centering, are placed on the base body 40.
• the center rier composition 44i formed as a cylindrical inner surface, which can serve as a raceway for radial bearing body 5 at the same time, which guide the rear rotary body 50 ' , relative to the base body 40 in the radial direction. It is important here that the radial bearing body 5 in the direction of the axis of rotation 40a are freely displaceable, so could absorb and transmit no axial forces. This ensures that the connecting elements 60, 62 no outer or by external effects resulting axial forces between the rotating bodies 50, 50 ' must be transmitted.
• the transmission according to the invention can also be performed only with a gear 30, a transformation element 70 and two rotary bodies 50, 50 ' .
• a counterweight may be provided.
• the input member 10 is provided for driving by a drive motor 8, wherein the drive side is preferably that side of the transmission on which the non-stored or not directly on the base body 40 mounted rotary body 50 'is arranged is.
• the output side is formed by the rotary body 50 mounted directly in the main body 40.
• the essential features and advantages of the proposed transmission are that only the rotary body 50 mounted directly on the main body 40 can be used in practice. table is exposed to all forces acting on the gear or within the transmission by the action of external loads or forces.
• the unsupported or not directly on the base body 40 mounted rotary body 50 ' is exposed only to internal static forces that originate from the connecting elements.
• the directly mounted rotary body 50 regularly forms the loaded working side of the transmission. However, the resulting forces and loads are not transferred to the unsupported or not directly on the base body 40 mounted rotary body 50 ' .
• also preferably designed as screws connecting elements can be made simpler. Because they only have to hold together the source organ.
• the function of the unsupported or not directly on the base body 40 mounted rotary body 50 ' is reduced to complete the output member.
• the thickness of this regularly formed as a circular disc unsupported or not directly on the base body 40 mounted rotary body 50 ' can thus be reduced to a minimum, with the result that the axial length of the transmission can be reduced.
• the cooperating with the directly on the base body 40 rotating body 50 holding body 40 ' may be a pipe section in the simplest version, the front side only needs to be ground and provided with holes for screws. Complicated and complex processing of the holding body thus eliminated.
• the inner diameter of the holding body is matched to the outer diameter of the rotary body 50 mounted directly on the base body 40 and of the base body 40. Between the directly mounted on the base body 40 rotary body 50, the base body 40 and the holding body 40 ' is defined a running space, are arranged in the rolling elements.
• Rotary body 50 mounted directly on the main body 40 is mounted on both its end faces, then cylindrical bearing elements can be used, of which one is axially aligned and the other radially aligned.
• the second raceway is in the plane of the cross, which leads to the advantageous axial shortening of the transmission (about the thickness of the cross) and thus to the weight reduction.
• Rotary body 50 on the base body 40 has the consequence that the ratio between the outer diameter of the cylindrical base body and its maximum inner diameter is significantly smaller than in the prior art.
• the dimensions of the cross, the gears, the openings and other parts of the planetary gear can be coordinated and optimized so that the torsional capacity of the transmission (with unchanged outside diameter) can be increased at significantly lower weight of the transmission by up to 80%.
• the invention is particularly in the field of the production of planetary or cycloidal transmissions, for example for use in industrial robots, for electric parking brakes in motor vehicles, or quite generally for applications which in a compact possible space a lightweight gearbox with high Ll- translation ratio and high performance require, commercially applicable.

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• 2007
  • 2007-10-25 RU RU2009120903/11A patent/RU2435085C2/ru active
  • 2007-10-25 JP JP2009535595A patent/JP5675104B2/ja active Active
  • 2007-10-25 WO PCT/EP2007/009250 patent/WO2008052691A1/de active Application Filing
  • 2007-10-25 EP EP07819302A patent/EP2100056A1/de not_active Ceased
  • 2007-10-25 CN CN2007800446383A patent/CN101802445B/zh active Active
  • 2007-10-25 KR KR1020097011325A patent/KR101433244B1/ko active IP Right Grant
  • 2007-11-02 TW TW096141335A patent/TWI421423B/zh active
• 2009
  • 2009-05-04 US US12/435,272 patent/US8403789B2/en active Active

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