Classifications

• • 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
  • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
  • B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
• • 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
  • B21H1/00—Making articles shaped as bodies of revolution
  • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
  • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
  • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
  • B21J5/12—Forming profiles on internal or external surfaces
• • 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
  • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups

Definitions

• the present invention relates to a method and an arrangement for producing rings from a tube made of a metallic material, wherein the rings are provided on the inner circumference with an axially continuous inner profile and on the outer circumference with a radial outer profile.
• Such a method is known for example from DE 102 19 441 Cl.
• the method described in this document is used for the production of internally and / or externally profiled rings, in particular of rolling bearing rings and gear rings, in a complete ready-to-sand state of tube or solid material.
• a radial outer profile should be produced by radial-axial profile tube rollers.
• a pipe section is machined from the outside with a rolling tool.
• the resulting flow of material is influenced by a counter-pressure tool which acts in the axial direction on the machined pipe section.
• the flow of material in the axial and radial directions is controllable, so that the evasive material can be included in the formation of the profile.
• a radial inner profile can be formed at the same time.
• sliding sleeves is proposed to produce the necessary internal teeth (axial profiling) by cutting in a separate operation, after the foundedachir has been completely rolled ready for grinding.
• a kneading device for forming the inner profile
• the kneading device comprises a first profile mandrel which is arranged in the tube and the outer profile of the mandrel corresponding to the inner profile of the rings to be formed, and wherein the kneading device comprises a kneading tool, which works from the outside, the tube section to eirierf ⁇ n ⁇ profiled " pipe section " to form;
• the axial inner profile of the rings can be produced significantly cheaper, namely by kneading. Since the metallic material used to produce the rings must be able to flow within limits anyway because of the rolling process used for producing the radial outer profile, the kneading method for producing the axial inner profile is generally applicable.
• kneading is to be understood broadly herein and is intended to include all similar and alternative methods in which material is intermittently pressed into the profile of the profile mandrel by radial and / or axial pressure.
• the rings according to the invention may in particular be sliding sleeves or coupling bodies, as used in transmissions.
• the material flow may optionally be controllable from both axial sides close to the rolling tool.
• the rolling step c) is preferably carried out on the inside profiled pipe section, wherein finished rings are subsequently separated.
• the handling is advantageous because a large number of items only arises when the rings are completed. Further, it is advantageous if the tube is moved in the kneading step b) relative to the kneading tool in the axial direction.
• the axial inner profile can be formed in a continuous operation on the pipe section.
• the kneading tool moves relative to the tube.
• the mandrel outer profile of the first profile mandrel is shorter than the length of the pipe section, wherein the first profile mandrel is floating and wherein the pipe section is moved in the kneading step b) in äxiale ⁇ f direction relative to ⁇ the first profile mandrel.
• the length of the tube section, on which the axial inner profile is formed in one piece can be made comparatively long, for example 50 to 70 cm.
• the utilizable portion of an outlet tube can thus be significantly increased since the length of the profiled tube section becomes greater in relation to the length of the clamping of the tube, which is usually necessary.
• the first profile mandrel is supported in the kneading step b) in the axial direction and thus remains substantially stationary with respect to the kneading tool.
• the profile mandrel is floating here.
• a support can take place in the axial direction, preferably in the direction of movement of the pipe section relative to the first profile mandrel.
• a second profile mandrel is arranged in the pipe section or ring.
• the rolling step may be carried out ⁇ advertising ⁇ to, without a flow of material impairs the integrity of the already-made inner profile.
• an axial counterforce is generated on the pipe section or the ring, against the flow direction of the material produced by the rolling tools, so as to increase the material flow in the axial direction and / or to be able to control the radial direction.
• the mandrel outer profile of the first profile mandrel is about as long or at least as long as the RöhräETismer, wherein "" the first ⁇ "'profile mandrel -in the kneading step b) is moved in the axial direction together with the pipe and is moved relative to the kneading tool.
• the axial inner profile is made by external kneading tools by a material flow is generated in the radial outer profile of the profile mandrel inside.
• no relative speed between the profile mandrel and the pipe section is present, so that the manufacturing accuracy can be very high.
• the mandrel outer profile of the first profile mandrel is shorter than the length of the pipe section, wherein the first profile mandrel is floatingly mounted with respect to the pipe.
• a counterpressure tool is preferably provided, which has a contact section, by means of which an axial counterforce can be generated on the pipe section or the ring against the flow direction of the material caused by the rolling tools, so as to flow the material axially and / or to control in the radial direction.
• the counter-pressure tool is preferably integrally formed "with" the second profile mandrel.
• a separating device is furthermore preferably provided for separating individual rings from the pipe section.
• This may be a separate device, for example, a turning tool or milling tool, grinding tool, saw, etc. for radial parting of the individual tubes.
• the separating device can be arranged in front of the rolling device in order to supply the rolling device in this way individual, profiled only on the inner circumference rings.
• the separating device may also be arranged on or after the rolling device in order to separate one ring from the pipe section, which is finished profiled both on the inner circumference and on the outer circumference.
• Figure 1 is a cylindrical tube made of metallic material, which is suitable as the starting workpiece " for " the “ manufacturing method according to the invention
• Figure 2 is a schematic longitudinal sectional view through a kneading device of a manufacturing arrangement according to the invention
• FIG. 3 shows a perspective view of a pipe section with an axial inner profile manufactured in the kneading device of FIG. 2;
• Figure 4 is a schematic longitudinal sectional view through a rolling device of a manufacturing arrangement according to the invention.
• Figure 5 is a schematic longitudinal sectional view through an alternative form of a rolling device of a manufacturing arrangement according to the invention
• Figure 6 is a schematic longitudinal sectional view through an alternative embodiment of a kneading apparatus for a manufacturing arrangement according to the invention
• Figure 7 is a plan view of a coupling body according to the invention.
• a cylindrical tube is designated generally as 10 as the starting workpiece for the production method according to the invention.
• the output tube 10 is unprofiled on both the inner periphery and the outer periphery, and is made of a metallic material capable of being processed in a kneader and a rolling device.
• the metallic material is in any case limited flowable, it being understood that the material may be heated during processing.
• the tube 10 is to be formed in the manufacturing process according to the invention in a plurality of rings, which have on its inner circumference an axial inner profile and on its outer periphery a radial outer profile, in particular shift sleeves for transmission.
• FIG. 2 shows a schematic longitudinal sectional view through a kneading device 12 of a manufacturing arrangement according to the invention.
• the kneading device 12 has, in a manner known per se, a kneading tool 14 with kneading jaws 16, which act on the tube 10 radially from the outside.
• the kneading device 12 is used to provide on the output tube 10 an axial internal profiling, for example in the form of a toothing.
• a first profile mandrel 20 is mounted in the kneading device 12.
• the shaping mandrel 20 has a comparatively short in the axial direction "section with a mandrel external profile 22nd
• the mandrel external profile 22 corresponds in shape to the inner profile, which is provided on the pipe 10 degrees.
• the first profile mandrel 20 has a cone section 24, which is arranged in the axial feed direction 26 in front of the mandrel outer profile.
• a certain reduction in diameter of the output tube 10 and the cone portion 24 is adapted at its axial front end to the inner circumference of the output tube 10, whereas the cone portion is adapted at its rear end to the - reduced - diameter of the mandrel outer profile 22.
• the first profile mandrel 20 is mounted floating within the tube 10, thus remains substantially stationary with respect to the kneading tool 14 in axial Richtu ⁇ y 26, the tube 10 is supplied with respect to the kneading device 12. This takes place within the kneading tool 14, the profiling of the inner circumference of the tube 10.
• the first profile mandrel 20 can be supported in the axial direction of an optional support means 27, in particular to avoid jamming or the like.
• a pipe section 28 of the tube 10 is provided with the axial inner profile, wherein the pipe section 28 has a significantly greater length than the mandrel outer profile 22 of the first mandrel outer profile.
• the pipe section 28 may have a length of 50 or 60 cm, possibly even a length of 2 m or more (theoretically infinite) 7
• FIG. 3 shows a pipe section 30 produced in the kneading device 12, which section is formed with an axial inner profile 32.
• FIG. 4 shows a schematic longitudinal sectional view through a rolling device 40 of a manufacturing arrangement according to the invention.
• the rolling device 40 is downstream of the kneading device 12.
• an internally profiled pipe section 30 is used as the starting workpiece.
• a radial outer profile of a ring to be produced is rolled, wherein then the finished ring is separated from the internally profiled tube 30, for example by means of a separating device 34a, which in Figure 4 also
• a further portion of the internally profiled pipe section 30 can be rolled to produce a further ring, which is then separated again.
• the rolling device 40 can basically be constructed and operated as described in the document DE 102 19 441 C1. Its disclosure content should therefore be included herein by reference.
• the rolling apparatus 40 has at least two rolling rollers 42, which are rotatable about axes in a rolling motion 44, wherein the axes are parallel to the longitudinal axis of the clamped pipe section 30.
• the rolling rollers 42 each exert a radial pressure on the pipe section 30, as indicated schematically at 44.
• the tube section 30 is clamped at one end by means of a chuck 46 and is rotated about the chuck 46 about its longitudinal axis, as shown schematically at 48.
• the pipe section 30 has an axial inner profile 32 which is as little as possible, ideally not at all, impaired during the rolling process.
• a second profile mandrel 50 is provided in the rolling device 40.
• the second profile mandrel 50 has a first section with an outer profile 52, which corresponds to the axial inner profile of the pipe section 30.
• the second profile mandrel 50 has a contact portion 54 whose diameter is greater than that of the outer profile 52.
• the contact portion 54 is in the axial direction at the free end of the pipe section 30 at.
• the profile mandrel 50 is also movable in the axial direction, as indicated schematically at 56. Therefore, the second profile mandrel 50 is simultaneously formed as a counter pressure tool and adapted to exert on the rolled portion an axial force which is adapted to control the material flow, in the axial direction, as shown at 58, and in the radial direction as shown at 59.
• a radial outer profile 62 is consequently produced by the rolling machining of a section of the internally profiled tube section 3, namely the radial outer profile for each ring (or alternatively simultaneously for a plurality of rings).
• the thus completed ring 60 is cut off, by means of the separating device 34a shown schematically.
• the material flow can be controlled in the axial and / or radial direction, in the end result, a radial outer profile 62 can be generated, the outer circumference may be partially larger than the outer circumference of the only profiled inside Pipe section 30.
• the radially profiled at ⁇ I ⁇ hencare "axial and on the outer circumference ring 60 can be used, for example as a sliding sleeve for a motor vehicle transmission.
• FIG. 5 shows an alternative embodiment of a rolling device 40 '.
• the rolling apparatus 40 corresponds in terms of design and operation of the rolling device 40 of Figure 4. It is here only so that the rolling device 40' is designed to roll inside profiled rings 36, which have been separated in advance from an internally profiled pipe section 30 ( see Figure 3).
• FIG. 6 shows an alternative embodiment of a kneading device 12 'for producing an internally profiled pipe section 30'.
• the kneading device 12 corresponds in terms of structure and operation of the kneading device 12 of Figure 2. In the following, only differences will be discussed.
• the first profile mandrel 20' has a section with a mandrel outer profile 22 ', which corresponds in its length to the pipe section 30' to be formed.
• the first profile mandrel 20 ' is clamped in a clamping device 70, which is fed together with the tube 10 in the axial direction 26 of the kneading tool 14'.
• a pipe section 30 is kneaded with an axial inner profile whose length corresponds approximately to the length of the mandrel outer profile 22' of the first profile mandrel 20 '.
• FIGS. 7 and 8 show a coupling body 80 produced according to the method according to the invention.
• the coupling body 80 according to the invention with an axial inner profile 32 '' and with a radial outer profile 62 '' is formed.
• the axial inner profile 32 '' is used for pushing on a corresponding toothing, for example, a loose wheel of a transmission.
• the radial outer profile 62 '' is formed so that the coupling body 80 can be fixed well to the idler gear, for example by welding.
• the radial outer profile 62 '' therefore comprises a radial flange portion.
• a participatveriereungsbe- at the still outer teeth excluded ToildeftMap7 iri ⁇ the ⁇ the Irinenverzahnung e ⁇ iner ⁇ shift sleeve on the coupling body 80 is further formed reaching 82, is inserted to a positive connection between the coupling body (and therefore the one with the clutch body 80 connected idler gear) and a transmission shaft to which the shift sleeve is axially displaceable, but rotatably mounted.

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• Mechanical Engineering (AREA)
• Forging (AREA)

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• 2005
  • 2005-06-15 DE DE102005028828A patent/DE102005028828B3/de not_active Expired - Fee Related
• 2006
  • 2006-06-14 EP EP06762038A patent/EP1909990B1/fr not_active Expired - Fee Related
  • 2006-06-14 AT AT06762038T patent/ATE421395T1/de not_active IP Right Cessation
  • 2006-06-14 KR KR1020077029500A patent/KR20080025374A/ko not_active Application Discontinuation
  • 2006-06-14 DE DE502006002727T patent/DE502006002727D1/de active Active
  • 2006-06-14 WO PCT/EP2006/005695 patent/WO2006133910A1/fr active Application Filing
  • 2006-06-14 CN CN2006800214729A patent/CN101222989B/zh not_active Expired - Fee Related
• 2007
  • 2007-12-17 US US11/958,184 patent/US20080250838A1/en not_active Abandoned

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