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WO2018141612A1 - Ensemble arbre-moyeu et procédé de production d'un ensemble arbre-moyeu - Google Patents

Ensemble arbre-moyeu et procédé de production d'un ensemble arbre-moyeu Download PDF

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Publication number
WO2018141612A1
WO2018141612A1 PCT/EP2018/051785 EP2018051785W WO2018141612A1 WO 2018141612 A1 WO2018141612 A1 WO 2018141612A1 EP 2018051785 W EP2018051785 W EP 2018051785W WO 2018141612 A1 WO2018141612 A1 WO 2018141612A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
hub
composite
setting region
axial direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2018/051785
Other languages
German (de)
English (en)
Inventor
Marc MÜLLER
Sebastian Wappler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp AG
Thyssenkrupp Dynamic Components Teccenter AG
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Presta TecCenter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp AG, ThyssenKrupp Presta TecCenter AG filed Critical ThyssenKrupp AG
Publication of WO2018141612A1 publication Critical patent/WO2018141612A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
    • B23P9/02—Treating or finishing by applying pressure, e.g. knurling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
    • F16D1/0858—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to the elasticity of the hub (including shrink fits)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/14—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons knurled articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/02—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0471—Assembled camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0475—Hollow camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2303/00—Manufacturing of components used in valve arrangements

Definitions

  • the present invention relates to a method for producing a shaft-hub composite with a non-round outside diameter having shaft. Furthermore, the invention relates to a shaft-hub composite.
  • a shaft-hub connection is known, according to which a plurality of cams or a plurality of bearing rollers are mounted on a shaft.
  • the shaft itself has on its outer periphery projecting portions which serve as abutment surfaces for the hub, which is for example a cam.
  • the shaft is tubular.
  • the bore of the hub, which serves to receive the shaft has a plurality of fitting recesses, which serve to receive the projecting portions of the shaft when the hub is pushed onto the shaft.
  • the assembled component in particular the cam, comprising the engaging body and the annular inner member, is press-fitted to this flared portion of the shaft applied substantially under plastic deformation, thus providing, for example, a crankshaft or a gear shaft.
  • Disadvantages also have an effect in this patent, for example, the maximum achievable coverage of the profiles of the shaft and the hub and thus the maximum achievable positive locking just like the material expansion generated during material deformation, which is also limited.
  • the head diameter of the material widening can not be increased in any desired manner.
  • a reduction in the inner diameter of the cam is limited, since this inner diameter can not be made smaller than the outer diameter of the shaft, as otherwise the cam would dig when applied to the shaft already in the fundamental wave. Consequently, the maximum achievable coverage as well as the torques to be transmitted is limited in such configured shaft-hub connections.
  • the method for producing a shaft-hub composite with a shaft having a non-round outer diameter and a hub having a through-hole for receiving the shaft has at least the following steps:
  • step b) a material widening in the axial direction along the shaft longitudinal axis is produced.
  • the composite can be, for example, a shaft-gear composite or a composite for forming a camshaft.
  • the shaft is a solid shaft or a hollow shaft, on which the hub, in particular the cam is pressed.
  • the shaft advantageously has an unround outer diameter, particularly advantageously a uniform non-round outer diameter.
  • the shaft is designed as a polygonal shaft with a plurality of edges, in particular three or more edges and consequently a plurality of corners.
  • the shaft has a round outer diameter.
  • the shaft is processed in a processing plant to produce a material widening.
  • the tools used for this purpose which are, for example, grinding tools, particularly advantageous roller burnishing tools, are advantageously evenly spaced from one another in the circumferential direction aligned or arranged the shaft.
  • the processing system has only a single tool for machining the shaft, in particular when a shaft with a round outer diameter is to be processed.
  • the tools are for machining the outer surface or surface of the shaft in at least one setting region, which is a region in which a press connection between the shaft and the hub is to be created. It is conceivable that more than one setting region, advantageously a plurality of setting regions, is produced on the shaft. Particularly advantageously, each setting region has a conical material widening extending in an axial direction of the shaft.
  • axial direction is understood in the context of the invention, the direction along the wavelength axis.
  • a rolling or toothing, in particular a posing of material is advantageously produced, which serves to produce a press connection, in particular a transverse press connection between the shaft and the hub, in particular in the setting region of the shaft.
  • the material expansion is not conical, but consistent, that means neither rising nor descending, extending in an axial direction of the shaft.
  • the torque transmission is advantageously already made possible when using a shaft with a non-circular outer diameter due to this non-round and increased particularly advantageous compared to a shaft with a round outer diameter.
  • the hub is advantageously pushed onto the shaft as far as the setting region or up to the setting region, so that a press connection is produced between the shaft and the hub. It is possible that after setting the hub on the shaft, a further setting area on the shaft is processed such that on this another material expansion is generated before another hub is pushed onto the shaft and placed on this wider setting range of the shaft.
  • a passage opening running conically in the axial direction is produced for receiving the shaft in the hub.
  • the hub is pushed onto the shaft such that the conically extending through opening extends substantially congruent with the conically extending material widening in the setting region of the shaft.
  • a material widening running conically in the axial direction along the longitudinal axis of the shaft is a material widening which has an outer diameter in an end region of the setting region, in particular in a setting region end, which is greater than at the beginning of the setting region, in particular in the setting region beginning or beginning (in the axial direction considered).
  • the conical through hole in the hub of the is formed such that in a region of a first end face of the hub, the inner diameter of the through hole is formed smaller than at a portion of the opposite (second) end face of the hub.
  • the passage opening of the hub is substantially funnel-shaped, corresponding to the conical course of material expansion in the setting region of the shaft.
  • the hub is pushed onto the shaft in such a way that when arranging the hub in the setting region of the shaft, the portion of the material widening which has a larger outer circumference interacts with the region of the passage opening of the hub, which has a larger inner diameter.
  • the material widening advantageously increases conically or funnel-shaped, wherein the hub is pushed so that increases in the same viewing direction, the inner diameter of the through hole of the hub conical or funnel-shaped or increases.
  • structuring into a surface of a passage opening of the hub is produced temporally before step c). Accordingly, it is possible that, for example, a widening of the material, in particular a curling or also a toothing, is produced in the surface of the passage opening of the hub as structuring. This advantageously increases the connection between the hub and the shaft in the setting region of the shaft so that high axial forces and / or torques can be transmitted, for example due to an additional positive connection between the shaft and the hub. It is also possible that additionally or alternatively to the configuration of the conically extending passage opening in the hub for receiving the shaft, the structuring is formed in the surface of the passage opening.
  • the through-opening of the hub is non-circular, in particular comparable to the geometric configuration of the outer diameter of the shaft, as a uniform out-of-round, in particular polygonal.
  • a high torque transmission between the hub and shaft is advantageously possible.
  • a bearing element for supporting the shaft is positioned on the shaft.
  • the bearing element has a bearing ring with a circular outer diameter.
  • the bearing element also has a passage opening for receiving the shaft, which is geometrically comparable to the outside diameter of the shaft, in particular as a uniform non-circular or polygonal shape.
  • the shaft and the hub are connected together using a thermal joining process. In this case, it is possible, for example, for the shaft to be cooled and / or the hub to be heated before the hub and the shaft are connected to one another.
  • the at least one expansion of material on the at least one setting region of the shaft is advantageous.
  • a shaft-hub composite with a shaft and a through hole for receiving the shaft have hub.
  • the shaft has at least one material widening, which runs conically in the axial direction, and has a setting region which extends at least in sections in the axial direction and in the circumferential direction of the shaft.
  • the hub is arranged according to the invention on the setting region of the shaft and axially and / or radially pressed with the shaft.
  • the shaft-hub composite comprised at least one shaft having a non-round outer diameter and a hub having a passage opening for receiving the shaft.
  • the shaft comprises at least one set of material having a set area, which extends at least partially in the axial direction and circumferential direction of the shaft.
  • the hub is arranged according to the invention on the setting area of the shaft and axially compressed.
  • the shaft has a round or non-circular outer diameter.
  • the shaft is a polygonal shaft having, for example, three corners and three edges or four corners and four edges. The edges or sides or stretching thus extend between the corners of the polygon, in particular polygon.
  • the corners themselves advantageously have a rounded geometric shape.
  • the material widening generated in the setting region of the shaft to be a rolling or toothing or a knurl. As a result, the torque transmission is advantageously increased and prevents unwanted in the axial direction of movement of the hub along the shaft longitudinal axis on the shaft.
  • the funnel-shaped material widening can advantageously be formed on a shaft with a round or non-circular outer diameter. It is also conceivable that the material deposition extending uniformly in the radial direction may be formed on a shaft with a round or non-round outer diameter.
  • the passage opening of the hub extends conically in the axial direction.
  • the conical shape of the through hole the hub is congruent to the conical course of material expansion in the setting region of the shaft is formed to prevent at least in an axial direction or shaft direction of the shaft displacement of the hub on the shaft after setting the hub on the setting range of the shaft.
  • a surface, in particular an inner surface, of the passage opening of the hub has a structuring, in particular a material widening, such as, for example, a curling or toothing.
  • the surface of the passage opening additionally or alternatively to the conical course of the passage opening of the hub has a structuring, wherein this structuring can be geometrically tuned to the material expansion of the shaft in the setting region.
  • a rolling or toothing geometrically comparable to the rolling or toothing in the setting of the shaft is used, so that a defined engagement or incision is made possible when arranging the hub on the shaft in the setting range of the shaft advantageous to significantly increase the torque transmission and axial force transmission.
  • the passage opening of the hub is formed geometrically comparable to the geometric configuration of the outer surface of the shaft and advantageously has a comparable polygonal configuration, whereby a particularly advantageous sufficient torque transmission is ensured.
  • a bearing element in particular a bearing ring axially adjacent to the hub is positioned on the shaft such that at least one end face of the bearing element serves as a stop acting in the axial direction of the hub. It is possible that the bearing element is arranged on an end face of the hub on the shaft, in the direction - starting from the opposite end of the hub - the hub due to the outer diameter-reducing material expansion (conical tapering of material expansion) in the setting region the shaft can not absorb increased axial force.
  • the bearing ring or the bearing element is advantageously arranged on the end face of the hub on the shaft, in the region of which the passage opening has the smallest inner diameter, while the shaft has the smallest outer diameter of the material widening in the section of the setting region.
  • shaft-hub assembly is produced by means of a method according to the preceding type.
  • a processing system for processing an outer surface of the shaft is claimed at least in a setting region for producing a shaft-hub assembly according to the aforementioned type.
  • the processing plant has a number of tools which are at least a factor of one higher than the number of corners of the shaft. If the shaft used is a shaft with a round outer diameter, it is therefore conceivable for the machining system to have only a single tool which is used to machine the outer surface of the shaft to produce a structuring in a setting region of the shaft.
  • the processing system has at least four tools to be aligned circumferentially around the shaft.
  • the tools are arranged at an angle of four times 90 ° around the shaft.
  • the four tools described instead of the four tools described only three tools with an angular offset of 90 ° (three times 90 °) are used, in which case the position of the fourth (missing) tool would remain unoccupied.
  • the tool or tools are designed to be displaceable in their position about the shaft, thus, advantageously, during the processing of the shaft or the outer surface of the shaft, to move around the shaft.
  • the shaft advantageously during its processing, is rotated about its longitudinal axis in order to be able to feed the still unprocessed areas of the outer surface to a tool.
  • an arrangement of only two tools is conceivable, which advantageously have an angular offset of 180 °.
  • the tools are so hydraulically, pneumatically or electromechanically driven or spring-loaded mounted that exert a pendulum-balancing pressure on the shaft to be machined.
  • a uniform machining of the outer surface of the shaft is advantageously made possible.
  • FIG. 1 shows a side sectional view of a hub and a shaft before method step c
  • FIG. 2 is a side sectional view of an embodiment of a shaft-hub assembly
  • 3 shows a side sectional view of an embodiment of a hub for a shaft-hub assembly according to the invention
  • FIG. 4 shows a lateral sectional view of a machining of the shaft for producing a shaft-hub assembly according to the invention
  • FIG. 5 in a sectional side view of a further embodiment of a shaft-hub composite according to the invention.
  • Figure 6 shows an embodiment of a processing plant for machining a shaft for a shaft-hub composite according to the invention.
  • FIG. 1 shows, in a lateral sectional view, a shaft 1, which forms an embodiment of a shaft-hub assembly 20 according to the invention (compare FIG. 2) with the hub 10 after arranging the hub 10 on the setting region 4 of the shaft 1.
  • the shaft 1 is in this case designed as a hollow shaft and has a through hole 2 which extends completely along the longitudinal axis 3 through the shaft 1.
  • the longitudinal axis 3 is advantageously also referred to as the axial axis.
  • the shaft 1 has a setting region 4 which is designed such that a material widening 5 is formed on an outer surface 6 of the shaft 1.
  • the material expansion 5 is generated for example by a roll.
  • the setting region 4 has a setting region beginning 4.1 and a setting region end 4.2, between which the material widening 5 advantageously extends conically or funnel-shaped.
  • the material widening 5 has an outer diameter h1 in the setting region beginning 4.1 of the setting region 4, which is smaller than in the setting region end 4.2 of the setting region 4. This means that the material widening 5 formed in the setting region end 4.2 of the seating region 4 has a larger outer diameter h2.
  • the outer diameter of the material widening 5 consequently rises continuously starting from the setting region start 4.1 to the setting region end 4.2, as a result of which a funnel-shaped or conically formed material widening 5 is or are generated along the setting region 4 of the shaft 1.
  • the shaft 1 has at least one, advantageously two or more free regions 7, in which the outer surface 6 of the shaft 1 does not comprise a material widening 5.
  • the shaft 1 is substantially unprocessed, consequently has no material widening and is ground, for example, only round on its outer surface 6.
  • a hub 10 is shown in FIG. 1 which has a passage opening 11 for receiving the shaft 1.
  • the passage opening 11 comprises a substantially untreated surface 12 and an insertion bevel 13.
  • an untreated surface 12 of the through-hole 11 for example, a surface without structuring is understood, in particular a structureless surface, apart from the occurrence of turning or scurfing marks.
  • the passage opening 11 is formed geometrically comparable to the outer periphery of the shaft 11.
  • the passage opening 11 of the hub 10 has a non-circular, in particular a uniform non-circular, particularly advantageous a polygonal geometric shape.
  • both the shaft 1 and the through hole 11 of the hub 10 are formed out of round.
  • the hub 10 is advantageously postponed after machining the through hole 11 and the setting region 5 of the shaft 1 in the mounting direction 30 on the shaft 1 such that a press connection, in particular a transverse press connection between the hub 10 and the shaft 1 in the setting region 4 is generated.
  • the shaft 1 is pushed through the through-opening 11 of the hub 10, until in the setting region 4 of the shaft 1, a press connection between the hub 10 and the shaft 1 is formed.
  • FIG. 2 An embodiment of a correspondingly produced shaft-hub composite 20 according to the invention is shown in particular in FIG. 2 in a lateral sectional view.
  • the passage opening 11 of the hub 10 extends in a conical or funnel-shaped form.
  • the hub 10 is advantageously placed on the setting region 4 of the shaft 1 in such a way that the conical progressions of the material expansion 5 and the through-opening 11 advantageously extend congruently.
  • FIG. 3 shows an embodiment of a hub 10 of a shaft-hub assembly according to the invention.
  • the hub 10 has a passage opening 11 which comprises a structuring 14.
  • the structuring 14 is advantageously designed as a rolling or toothing. It is also possible that the structuring 14 shown is a rotational contour or milling contour.
  • the structuring 14 and consequently also the passage opening 11 of the hub 10 have a conical, in particular funnel-shaped, course in the axial direction or along the longitudinal axis 3 of the shaft.
  • the inner diameter H2 of the structuring 14 or the through-bore 11 becomes larger is formed as in a portion of the passage opening end 11.2 of the through hole 11, on which the inner diameter H l is formed smaller than at the passage opening start 11.1.
  • the passage opening 11, in particular the structuring 14 is advantageously tapered in a funnel-shaped or conical manner starting from the start of the passage opening 11 1 towards the passage opening end 11.2.
  • the hub 10 additionally or alternatively to a conical passage opening 11, the structuring 14 which, depending on the geometric configuration of the passage opening 11 consequently also comprises a conical or funnel-shaped course.
  • the structuring 14, in particular the passage opening 11, is formed geometrically comparable to the material widening 5 in the setting region 4 of the shaft 1.
  • FIG. 4 shows a side sectional view of a machining of a shaft 1 for producing a shaft-hub assembly 20 according to the invention (see FIG. 5).
  • a conically extending material widening 5 is produced by using tools 51. 2 and 51. 4 of a processing system, as shown in FIG.
  • the tools 51.2 51.4 which are advantageously roller burnishing tools, have a tool profile 56 which serves to structure the outer surface of the shaft 1.
  • the tool extends profile of both tools 51.2 51.4 in the direction of the axis of rotation D of the tools 51.2 51.4 considered conical.
  • FIG. 5 shows a side sectional view of a further embodiment of a shaft-hub composite 20 according to the invention.
  • the embodiment of the shaft-hub assembly 20 according to the invention shown in FIG. 5 differs from the embodiment of a shaft-hub assembly 20 shown in FIG. 2 in that, in addition, a bearing element 40, in particular a ring bearing element, on the shaft 1 is arranged.
  • the bearing element 40 is advantageously arranged axially adjacent to the hub 10 on the shaft 1 and thereby also serves as a stop for preventing unwanted axially directed movement of the hub, in particular against the indicated mounting direction 30.
  • FIGS. 1, 2 or 5 schematically shows an embodiment of a processing installation 50 for machining a shaft 1, which serves as a component of a shaft-hub assembly 20 according to the invention (see, for example, FIGS. 1, 2 or 5).
  • the processing plant 50 has at least one tool, Advantageously, a plurality, in particular four tools 51.1-51.4, which are aligned in the circumferential direction about the shaft 1, which is designed here as a shaft 1 with non-circular outer diameter, for machining the outer surface 6 of the shaft 1.
  • the tools 51.1-51.4 are offset from each other at an angle of 90 ° (four times 90 °).
  • the tools 51.1-51.4 are used to produce a structuring, in particular a rolling (see, for example, Figures 1, 2 and 5) on the outer surface of the shaft 1.
  • the tools 51.1-51.4 can thus rotate within a square, without the contact to a lose the side surface of the shaft.
  • Each tool 51.1-51.4 advantageously has a hydraulic cylinder 52.1-52.4, wherein each of the hydraulic cylinders 52.1-52.4 is connected via a line system 55 to a hydraulic master cylinder 53 and a pressure accumulator 54.
  • the required forming force is advantageously produced hereby.
  • the tools 51.1-51.4 are rotated or rotated about their axes of rotation by the rotation of the shaft 1 about its longitudinal axis. Consequently, the tools 51.1-51.4 are advantageously designed as rotary bodies or rotary bodies.
  • the machining system shown in FIG. 5 has at least floatingly mounted tools 51.1-51.4 or a floating shaft 1. It is particularly advantageous formed a floating system of tools 51.1-51.4 and shaft 1, in which the tools 51.1-51.4 evenly distributed viewed in the circumferential direction around the shaft 1 are arranged.
  • the floating mounting of the tools can be realized for example by means of the described hydraulics or mechanically.
  • An electromechanical or even pneumatic application is conceivable here as well.
  • the pressure accumulator 54 it would also be conceivable to use the residual compatibility of the entire hydraulic system of the processing system 50 as a kind of pressure accumulator. For example, air bubbles in the hydraulic medium or expansion of the hydraulic lines when pressure is applied serve this purpose.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

La présente invention concerne un procédé pour produire un ensemble arbre-moyeu (20) ainsi qu'un ensemble arbre-moyeu comportant un arbre (1) comprenant un diamètre externe rond ou ovalisé, le procédé comprenant au moins les étapes suivantes: • a) agencer l'arbre (1) dans une installation d'usinage (50) pour usiner une surface externe (6) de l'arbre (1) au moins dans une zone de pose (4), • b) produire au moins une expansion de matériau s'étirant au moins dans certaines régions dans la direction circonférentielle et dans la direction axiale, dans la zone de pose de l'arbre, l'expansion de matériau (5) s'étendant de façon constante ou conique dans la direction axiale le long de l'axe longitudinal de l'arbre, • c) relier le moyeu (10) et l'arbre (1) de façon à former, dans la zone de pose (4), un assemblage par pression de l'arbre (1) et du moyeu (10). La présente invention concerne en outre une installation d'usinage (50) pour usiner une surface externe (6) de l'arbre au moins dans une zone de pose (4) pour produire l'ensemble arbre-moyeu (20).
PCT/EP2018/051785 2017-02-01 2018-01-25 Ensemble arbre-moyeu et procédé de production d'un ensemble arbre-moyeu Ceased WO2018141612A1 (fr)

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DE102017201578.0A DE102017201578B4 (de) 2017-02-01 2017-02-01 Welle-Nabe-Verbund und Verfahren zur Erzeugung eines Welle-Nabe-Verbundes
DE102017201578.0 2017-02-01

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WO2018141612A1 true WO2018141612A1 (fr) 2018-08-09

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DE102017203773A1 (de) * 2017-03-08 2018-09-13 Bayerische Motoren Werke Aktiengesellschaft Welle-Nabe-Verbindung, sowie Antriebsstrang mit einer solchen Welle-Nabe-Verbindung
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US3972212A (en) * 1975-06-16 1976-08-03 Brinkman Robert J Progressive knurl holder
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