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WO2016180400A1 - Procédé de fabrication d'une bague, palier à roulement et dispositif pour fabriquer une bague - Google Patents

Procédé de fabrication d'une bague, palier à roulement et dispositif pour fabriquer une bague Download PDF

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Publication number
WO2016180400A1
WO2016180400A1 PCT/DE2016/100198 DE2016100198W WO2016180400A1 WO 2016180400 A1 WO2016180400 A1 WO 2016180400A1 DE 2016100198 W DE2016100198 W DE 2016100198W WO 2016180400 A1 WO2016180400 A1 WO 2016180400A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
tool
ring
feed unit
heated
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/DE2016/100198
Other languages
German (de)
English (en)
Inventor
Ephraim SCHWEGLER
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of WO2016180400A1 publication Critical patent/WO2016180400A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B21H1/12—Making articles shaped as bodies of revolution rings of restricted axial length rings for ball or roller bearings
    • 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
    • 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
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/182—Rolling annular grooves
    • 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
    • B21K1/04—Making machine elements ball-races or sliding bearing races
    • 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
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls

Definitions

  • the invention relates to a method for manufacturing a ring, in particular for a rolling bearing, with at least one tool, a feed unit, a pipe and a heating device, wherein the tube has an outer jacket and an inner jacket and the feed unit is assigned. Furthermore, the invention relates to a rolling bearing with an outer ring and an inner ring and a device for manufacturing a ring.
  • rolling bearings such as deep groove ball bearings
  • first rings are tapped from a pipe. This is for example
  • Multi-spindle lathes performed with a high volume performance. It can also be incorporated directly into the blank prior to parting off a mold. For example, cutting takes place in the cold state with a cutting tool (forming wheel or disk on a multi-spindle machine). Alternatively, the mold can also be made by turning a bar on a single spindle machine.
  • the rings are subjected to a heat treatment in order to increase the hardness of the material.
  • the heat treatment is carried out in three stages, whereby usually different methods are used depending on the product.
  • a warming up takes place For example, 850 ° C for austenitizing and thus changing the material structure.
  • a case hardening at 40 ° C is applied to bring the material structure to solidify by a rapid cooling and to obtain a better hardness.
  • a tempering can be carried out at 170 ° C, for example. This rewarming reduces the effect of thermal shocks (case hardening) inside the microstructure and stabilizes the material.
  • the rings are placed in a continuous furnace for curing where they are heated to austenitizing temperature and then quenched in a salt or water bath.
  • a delay of the rings takes place, as a directional immersion of the rings with controllable delay in mass production is not feasible.
  • DE 101 00 868 B4 discloses a cold rolling forming machine with a advancing lower tool in an axial feed unit, in the manufacture of flanges of a cylindrical precursor of the flange in the forming region of the precursor between upper and The lower tool is rolled out and the precursor after the Flanschanwal tion is ejected by a pusher.
  • DE 30 12 021 A1 describes a method for producing bearing rings, wherein the production takes place with material displacement, in particular axial compression of the pipe sections, with formation of radially circumferential shoulders.
  • DD 301 279 A7 discloses a method for producing Wäl z bearing inner rings, in the closed loop by forging compressed annular workpieces of powder metallurgical material with circumferential
  • Profiling can be made on the outer diameter, wherein the profiling is realized by powder forging in several tool arrangements.
  • the DD 225 358 AI describes a method for the production of profiled rings of raw material, in which without additional Umspannvorgang initially the reshaping complete and subsequent machining takes place, the profiled ring is only separated from the pipe with the last machining operation. This method includes only the manufacturing stage of soft machining without curing.
  • DE 968 572 a method for producing profiled rings for rolling bearings is described in which machined, annular Vortechnik employment are cold rolled under widening their bore in the intended ring shape.
  • DE 1175 638 discloses a rolling mill for rolling rings, wherein the rings are rolled alternately into two dies.
  • DE 24 35 210 discloses a method for producing rolling bearing rings, in which concentric circular rings are cut from a rolled flat steel, pressed into the desired shape, and then finished by hardening and grinding.
  • DE 10 2005 028 828 B3 discloses a method for producing metal rings, in which a pipe section by kneading using a profile mandrel, the inner profile of the pipe section is impressed, while the pipe sections is processed from the outside with a kneading tool. Subsequently, the radial outer profile is formed by rolling and finally a ring separated from the pipe section.
  • DE 1 234 493 describes a method for rolling bearing production, in which a ring and a middle piece are produced from a round tube part by swaging and punching.
  • EP 0 927 832 AI is a process for the blank production of ball cages for constant velocity joints described on a multi-spindle machine, the pipe to be processed is cyclically moved from one processing station to the next processing station, the workpiece can be cured by a parting off the pipe by induction hardening.
  • DE 20 2010 002 818 U1 discloses a turning machine with a workpiece machining center, which has a workpiece clamping device for receiving a workpiece to be machined and a tool turret with different tools.
  • An inductor for curing surrounds the clamped workpiece in the use position annular and quenching a Abschreckbrause is provided.
  • a disadvantage of the conventional methods for producing rings and / or bearings is that the workpiece to be processed must pass through several machines and / or treatment steps, between which a transfer of the workpiece takes place.
  • the object of the invention is to improve the state of the art.
  • the problem is solved by a method for manufacturing a ring, in particular for a rolling bearing, with at least one tool, a feed unit, a pipe and a heating device, wherein the tube has an outer jacket and an inner jacket and the feed unit is assigned, with following steps:
  • Heating the pipe by the heating device so that at least a part of the pipe is heated, in particular above a hardening temperature
  • the tube is heated by a feed unit associated heating device, and tool-bound cooled and / or hardened in the second tool, a higher hardness and / or a higher yield strength at a very low distortion of the finished ring compared to achieved hardening free of a tool and / or in a subsequent hardening step. Due to the low distortion of the tool-bound hardening grinding and / or alignment in the subsequent processing step with less effort is feasible.
  • the hardening of the machined tube in the tool takes place by dissipating the component heat via the tool.
  • Machine tool the direct change to the second tool for hardening and shearing, so that there is no transfer between processing machines, the finished ring.
  • feed unit-bound heating and tool-bound machining and / or hardening no transfer of the semifinished product and / or the workpiece between the processing steps is necessary.
  • the curing takes place directly in the second tool before or after the shearing of the machined tube in the second tool, so that immediately a manufactured ring with little delay exists and thus further post-processing steps can be omitted or reduced.
  • a "ring” is in particular a hollow cylinder, the radius of which is many times greater than its thickness, and in particular its edge is many times thinner in relation to the central recess. or Plastic ring and / or ceramic ring act.
  • a manufactured ring can be used as an inner ring and / or outer ring for a rolling bearing.
  • a “rolling bearing” is in particular a bearing in which between one inner ring and one outer ring one rolling element or several rolling elements reduce the frictional resistance during relative movement of the outer ring and the inner ring relative to each other
  • a rolling bearing can be used in particular for fixing axles and / or shafts Depending on the design, in particular a rolling bearing absorbs radial and / or axial forces and at the same time permits the rotation of the shaft and / or the components mounted on an axle.
  • a "tool” is used, in particular, for machining a workpiece, the tool being guided in particular by a machine and / or a human being, in particular a tool (press mold) and / or a machining tool
  • the tool is used to machine the pipe.
  • a "feed unit” (also called slide unit or positioning unit) is in particular a unit which exerts a movement due to pneumatic and / or hydraulic force and / or electrically driven, so that in particular the pipe is fed to the tool and / or a positioning in particular of the pipe and / or another semi-finished product and / or a raw material.
  • the feed unit can also exchange pneumatic and / or electrical signals with a higher-level control of a processing machine.
  • the tube can be held in axial alignment in the feed unit and / or moved by them.
  • the tube can also be heated in the feed unit.
  • a tube is made of a solid and / or inflexible material, in particular, a tube is a welded and / or seamless one
  • a pipe may include steel, stainless steel, stainless steel, cast iron, copper, brass, nickel alloy, titanium alloy, aluminum alloy, plastic and metal composite, and / or non-metallic materials such as plastic and / or ceramic in particular, a semifinished product, which is manufactured into a prefabricated component, in particular a ring, in particular in its axial orientation the tube has a peripheral outer jacket and an inner inner jacket.
  • a "heating device” is in particular a device which produces heat, so that in particular the heat energy is transferred from the heating device to another system due to temperature differences Heat conduction, heat radiation and / or convection take place.
  • the tube and / or the feed unit can be heated by the heating device.
  • the heating device can work in particular via an inductive and / or electrical and / or capacitive heating.
  • the heating unit may also have an electric heater and / or a fuel-consuming heating and / or the natural ambient heat using heating, such as solar heating, geothermal heating, air, heat pump heating, hot water heating and / or fed by such a heater
  • Harddening temperature is understood to mean in particular the temperature, in the case of a material and / or a material an increase in its mechanical properties
  • Hardening temperature but is understood in particular the temperature at which a change in the molecular structure of plastics and / or the hardening of ceramics occurs.
  • the "first tool” corresponds in particular to the tool defined above, for example, the first tool may be a reshaping and / or abrading and / or cutting tool, such as a spinning or rolling mandrel.
  • a spatial contact and / or a spatial contact and / or a positioning of the tube and a tool are considered as "effective contact" understood, so that they can act in particular one-sided and / or mutually one another.
  • Manufacturing process understood in which a material and / or a pipe is selectively brought plastically into another shape.
  • a starting material is formed into a semi-finished product or a semi-finished product is used to produce a workpiece.
  • the material retains its mass and / or its cohesion during forming. Under forming fall in particular rollers and / or pressures.
  • forming is also understood to mean the separation of individual material layers and / or parts from the tube.
  • the forming comprises the separation of material layers by mechanical and / or nonmechanical means.
  • forming also includes machining, machining and / or cutting.
  • the "outer jacket” is the surface of the outer material volume of the tube.
  • the inner surface of the material volume of the tube is understood to be an “inner jacket.”
  • the inner jacket can also be considered as
  • Inner lateral surface of the tube are called.
  • a "groove” is an elongated, angled and / or rounded recess later running surface of the outer and / or inner ring of the manufactured rolling bearing.
  • Defined positioning is understood to mean, in particular, that the machined tube and the second tool are aligned with each other in a predetermined position and / or spatially adjacent to one another. Specifically, defined positioning also means that the central axis of the tool is aligned with the central axis of the tube and / or the feed unit coincides.
  • the second tool preferably has a die, which receives the heated and processed by the forming tube form-fitting manner.
  • the definition of the "second tool” essentially corresponds to the tool defined above, but in particular the second tool has a die for positive reception of the machined tube and / or hardening and / or a shearing edge.
  • fixed fixation is meant, in particular, that the second tool and the machined tube are not movable relative to each other and / or in a space.Fixed fixing can be achieved, for example, by advancing the feed unit against the second tool and / or engaging the feed unit Also, the machined tube in the second tool may be held in position by, for example, a punch and / or other tool component.
  • the "second active contact” corresponds in particular in its function to the first effective contact described above, wherein the effective contact between the second tool and the machined tube is present here.
  • Hardening is understood as meaning, in particular, a change in the material properties of the material of the pipe: in particular, if the pipe is made of steel or titanium alloy, hardening is understood to mean an increase in mechanical resistance through targeted modification and transformation of the structure
  • the cooling rate is in particular at least 27 K / s and preferably greater than 100 K / s.
  • Hardening in particular also includes the hardening of plastics, for example by crosslinking and / or copolymerization with a change in the
  • the hardening of plastic may be effected by heat treatment and / or light irradiation, in particular UV irradiation, hardening, in particular hardening of ceramics, hardening takes place, in particular, in the tool-bound second tool gene processing machine before or after shearing the machined and / or hardened pipe instead.
  • shearing is meant, in particular, that the hardened tube and / or the machined tube is separated from the tube by displacement of the second tool, whereby the sheared part of the tube is present as a ring such a high shear stress on the pipe, that the part of the tube, which is located in the second tool, is separated.
  • the tube is sheared off while still warm, in order to reduce the tool load.
  • the shearing can for example be done by shearing by means of laterally moving past each other cutting.
  • the hardening and / or cooling of the machined tube and / or the ring can be done very uniform tool-bound, so that the delay of the tube and / or ring is very low.
  • this is the delay between the heating of the tube and after the cooling of the ring and / or of the hardened tube, wherein the "delay" is understood to be the change in dimensions and / or shape of a workpiece Changing the dimensions and / or the shape is determined at a room temperature of 20 ° C.
  • the ring is ground and / or aligned to adjust the radial dimensions.
  • the ring can be fed directly to the grinding machine after cooling to 200 ° C.
  • "Grinding" is, in particular, a machining process for the treatment of surfaces with abrasives and / or bonded abrasive grains. ⁇ br/> [0002] The grinding achieves, in particular, a high degree of dimensional accuracy, as well as low waviness and roughness of the ground surface of the ring.
  • the ring has iron and / or steel and / or titanium and / or ceramic and / or plastic.
  • a ring can be made, which will meet as later outer and / or inner ring of a bearing of the stress and use.
  • the material choice of the ring can be adapted to the environmental conditions. For example, it is advantageous in corrosive environments to use high-alloyed steels and / or plastic and / or ceramic as material for bearing rings.
  • first radii By forming before shearing first radii can be formed on the machined and / or hardened tube.
  • This is the second tool with a corresponding force against the machined and / or hardened tube moved.
  • Manufacturing step understood in which metals and / or plastics are selectively brought plastically in another form. Under reshaping is understood in particular the impressions and / or push-through.
  • the object is achieved by a rolling bearing with an outer ring and an inner ring, wherein between the outer ring and the inner ring, a rolling element or more rolling elements, in particular in a groove, is or are, wherein the outer ring and / or the inner ring is or are manufactured according to a previously described method.
  • a rolling bearing can be provided with precisely manufactured outer ring and / or inner ring and running surfaces.
  • bearing rings for rolling bearings can be precisely manufactured in mass production.
  • the inner and outer rings differ, in particular, in that the first tool for removing and / or reshaping the outer jacket or the inner jacket has to be designed differently in order to provide an inner groove for an outer ring or an outer groove for an inner ring.
  • the object is achieved by a device for producing a ring, in particular for a rolling bearing, which is set up such that the machining of a tube can be carried out according to a method described above.
  • a ring is manufactured in the device with high precision and very low distortion.
  • the at least one tool is arranged on a rotatable working star of the device and / or is in a first operative contact or second operative contact with the tube or the tubes.
  • the work star is rotatable, so that by turning the work star in a simple way the tools can be changed.
  • the change of tools can be realized by turning the working star and a shearing of the tube into a ring.
  • the tool is arranged on the work star such that its central axis coincides exactly the center axis of the tube and / or the feed unit coincides when the working star and the feed unit are aligned according to rotational and / or are in operative contact.
  • the feed unit and / or the feed units have the heating device or a plurality of heating devices, in particular an induction coil.
  • the heating device or a plurality of heating devices is or are integrated in the feed unit and / or the feed units, rapid heating of the tube is possible.
  • the heating device fills the inner outer surface of the feed unit so that the tube held in the feed unit is in direct proximity to the heating device. While in the conductive heating a direct surface contact between
  • Heating device and pipe is advantageous to maintain a gap between the heating device and pipe for inductive heating always. Thus, optimal heat transfer from the heater to the pipe can be ensured. [86] It is particularly advantageous if the heating device is designed as an induction coil, so that an inductive heating of the tube takes place.
  • An "induction coil” is in particular a coil, which in particular flows through low and / or medium-frequency alternating current and thereby generates an alternating magnetic field which induces eddy currents in the tube, as a result of which the tube is heated in particular the heat is generated directly in the pipe itself and does not have to be transferred by heat pipes from the heating device to the pipe.
  • a rotatable unit has two feed units and is in operative contact with the work star, each feed unit having its own drive.
  • a change of tools by turning the unit can be realized.
  • the number of simultaneously used tools can be increased, since this no longer depends only on the space and / or the circumference of the working star, but can be additionally increased by the number of arranged rotatable units. Consequently, by arranging a plurality of rotatable units, mass production can be further increased.
  • the rotatable unit which carries the two feed units, is rotatable about its center axis stepwise and / or abruptly. This can be done according to the requirements of changing the tools by means of the rotatable unit and / or shearing the tube.
  • FIG. 1 is a highly schematic sectional view of a feed unit with a tube and a spinning mandrel
  • FIG. 2 shows a highly schematic sectional view of a feed unit with a tube, a shear die and a punch mandrel
  • Figure 3 is a highly schematic plan view of a rotatable work star with an arranged rotatable tool change and Figure 4 shows a highly schematic section through a rotatable work star with arranged rotatable tool changer.
  • a processing machine has a feed unit 101, which has an integrated induction coil 103 in its inner wall. Inside the feed unit 101, a seamless steel pipe 102 is supported. At the end of the seamless steel tube 102, a spinning mandrel 104 is pushed into the interior of the tube. The spinning mandrel 104 and the center of the seamless steel pipe 102 are aligned on the same axial center axis 107.
  • the seamless steel tube 102 was fed to the feed unit 101 of the processing machine.
  • the feed unit 101 includes the seamless steel pipe 102 at the front end on the side of the spinning mandrel 104 with high dimensional accuracy.
  • the heated part of the tube 105 of the seamless steel pipe 102 has been moved to the tool-side end of the feed unit 101.
  • the spinning mandrel 104 is centered in the heated part of the tube 105 inserted.
  • the radially movable and orbital rotating spinning mandrel 104 presses a groove 106 in the inner circumferential surface of the heated portion of the tube 105.
  • the groove 106 later represents the running surface of an outer ring of a rolling bearing, not shown.
  • Processing machine has an induction coil 203.
  • a seamless steel tube 202 is supported with the heated and pre-machined portion of the tube displaced into a segmented shear die 208.
  • the segmented shear die 208 has three segments in the radial direction. Outside the segmented shear die 208 sits the die ring 209.
  • the radial segments of the Abschermatrize 208 have at its outer edge at a 2 ° angle lower, so correspondingly using the die ring 209, the diameter of the Abschermatrize 208 is reduced.
  • Disposed within the segmented shear die 208 is a punch mandrel 210, with the punch mandrel 210 positively engaging the heated and pre-machined portion of the tube 205 which has a groove 206.
  • the punch mandrel 210 is arranged together with a die, not shown, with associated die ring on the base plate of the work star.
  • the heated and pre-machined portion of the tube 205 is slid into the segmented shear die 208. Due to the reshaping preprocessing, the heated and pre-machined part of the tube 205 has a groove 206.
  • the heated and pre-machined part of the tube 205 in the segmented Abschermatrize 208 fixed fixed fixed.
  • the punch mandrel 210 pushes with such a force against the heated and pre-machined part of the tube 205, that a radius on the heated and pre-machined part of the tube 205 is formed. At the same time, the punch mandrel 210 fixes the heated and pre-machined portion of the tube 205 in the segmented shear die 208.
  • the work star 320 is rotatable about the rotation axis 321.
  • the work star 320 has four tool shapes 316, 317, 318 and 319 at its periphery.
  • the first tool mold 316 is in operative contact with a common rotatable tool changer 313, which is rotatable about the axis of rotation 314 centrally.
  • On the common rotatable tool changer 313 are a first Feed unit 311 and a second feed unit 312 arranged parallel to the axis of rotation 314.
  • the first feed unit 311 has an induction coil 331 and the second feed unit 312 has an induction coil 332.
  • a pressing tool 315 is at the first feed unit 311 in operative contact with the pipe, not shown, in the first feed unit 311st
  • the tool dies 316, 317, 318, and 319 disposed on the work star 320 each have a fixed center mandrel, a three-piece outer die, and an exciting die ring.
  • the tool molds 316, 317, 318 and 319 are mounted on the working star 320 so that their center axes coincide in an operative contact exactly with the center axes of the second feed unit 312 and other feed units, not shown, of other common rotatable tool changers, not shown.
  • the work star 320 rotates with a force such that the heated and advanced part of the tube in the first tool mold 316 is sheared off.
  • the not shown sheared off part of the tube remains in the first mold 316 in which it is cooled due to a high surface contact and not shown internal cooling of the first mold 316 with a cooling rate of 50 K / s and thus hardened.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)

Abstract

L'invention concerne un procédé pour fabriquer une bague, en particulier pour un palier à roulement, au moyen d'au moins un outil (104), une unité d'avance (101), un tube (102) et un dispositif de chauffage (103), le tube présentant une enveloppe extérieure et une enveloppe intérieure et étant associé à l'unité d'avance. L'invention concerne en outre un palier à roulement comprenant une bague extérieure et une bague intérieure, ainsi qu'un dispositif pour fabriquer une bague.
PCT/DE2016/100198 2015-05-12 2016-05-02 Procédé de fabrication d'une bague, palier à roulement et dispositif pour fabriquer une bague Ceased WO2016180400A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015107475.3A DE102015107475B3 (de) 2015-05-12 2015-05-12 Verfahren zum Fertigen eines Ringes, Wälzlager und Vorrichtung zum Fertigen eines Ringes
DE102015107475.3 2015-05-12

Publications (1)

Publication Number Publication Date
WO2016180400A1 true WO2016180400A1 (fr) 2016-11-17

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PCT/DE2016/100198 Ceased WO2016180400A1 (fr) 2015-05-12 2016-05-02 Procédé de fabrication d'une bague, palier à roulement et dispositif pour fabriquer une bague

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DE (1) DE102015107475B3 (fr)
WO (1) WO2016180400A1 (fr)

Citations (16)

* Cited by examiner, † Cited by third party
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DE1175638B (de) 1960-12-17 1964-08-13 Skf Svenska Kullagerfab Ab Walzwerk fuer Ringe
DE1234493B (de) 1961-02-08 1967-02-16 Skf Svenska Kullagerfab Ab Verfahren bei der Waelzlagerherstellung zur Erzielung verschiedener Volumenverhaeltnisse zwischen einem aus einem gemeinsamen Rohteil herzustellenden Ring und Mittelstueck
DE2435210A1 (de) 1974-07-22 1977-02-17 All Technik Gmbh Verfahren zur herstellung von waelzlagerringen und walzkoerpern
DE3012021A1 (de) 1980-03-28 1981-10-08 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Lagerring, insbesondere fuer radialwaelzlager, gleit- oder gelenklager und verfahren zu seiner herstellung
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DD248299A1 (de) * 1984-09-03 1987-08-05 Waelzlager Normteile Veb Verfahren zur herstellung ringfoermiger werkstuecke auf mehrspindeldrehautomaten
DD301279A7 (de) 1986-07-04 1992-11-19 Schraubenwerk Gmbh Verfahren und vorrichtung zur herstellung ringfoermiger werkstuecke
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WO1998032556A1 (fr) * 1995-07-22 1998-07-30 Technische Universität Dresden Procede pour realiser des bagues par enlevement de matiere et formage combines, et machine correspondante
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WO2005005079A1 (fr) * 2003-07-09 2005-01-20 Technische Universität Dresden Pieces composites annulaires et procede de laminage a froid pour fabriquer de telles pieces
DE102005028828B3 (de) 2005-06-15 2006-12-21 Getrag Synchrontechnik Gmbh Verfahren und Vorrichtung zum Herstellen von Metallringen
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