US20170056943A1 - Method for manufacturing a steel friction lamella for a friction coupling - Google Patents

Method for manufacturing a steel friction lamella for a friction coupling Download PDF

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Publication number
US20170056943A1
US20170056943A1 US15/255,190 US201615255190A US2017056943A1 US 20170056943 A1 US20170056943 A1 US 20170056943A1 US 201615255190 A US201615255190 A US 201615255190A US 2017056943 A1 US2017056943 A1 US 2017056943A1
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Prior art keywords
lamella
friction
macrostructuring
slit
circumferential edge
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.)
Abandoned
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US15/255,190
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English (en)
Inventor
Sami Oezkan
Michael Eisenschmid
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.)
Hoerbiger Antriebstechnik Holding GmbH
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Hoerbiger Antriebstechnik Holding GmbH
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Assigned to HOERBIGER ANTRIEBSTECHNIK HOLDING GMBH reassignment HOERBIGER ANTRIEBSTECHNIK HOLDING GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Eisenschmid, Michael, OEZKAN, SAMI
Publication of US20170056943A1 publication Critical patent/US20170056943A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/227—Surface roughening or texturing
    • 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
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
    • 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
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • B21H8/005—Embossing sheets or rolls
    • 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
    • B21K23/00—Making other 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
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/74—Features relating to lubrication
    • 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
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/648—Clutch-plates; Clutch-lamellae for clutches with multiple lamellae
    • 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
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0008—Ferro
    • F16D2200/0021—Steel
    • 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
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0023—Shaping by pressure
    • 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
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0038—Surface treatment
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/06—Lubrication details not provided for in group F16D13/74
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/10—Surface characteristics; Details related to material surfaces
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/12—Mounting or assembling
    • 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
    • F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
    • F16D35/005—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with multiple lamellae

Definitions

  • the invention relates to a method for manufacturing a steel friction lamella for a friction coupling.
  • Friction lamellae and friction couplings comprising these friction lamellae are used to establish a frictional or non-positive connection between at least two shafts.
  • Examples are switchable couplings, such as are used for example in a transmission of a motor vehicle, or non-switchable couplings, such as are used for example as a differential lock in a motor vehicle differential transmission.
  • a steel lamella body is used, which is provided with a sintered coating or a molybdenum coating on the primary faces thereof (in other words the front and rear faces). These are generally manufactured in a multi-layer construction. Overall, this leads to a complex manufacturing process and increased manufacturing costs.
  • the object of the invention is to provide a friction lamella which is distinguished by a good price/performance ratio.
  • the invention proposes a method for manufacturing a friction lamella in which a steel plate is supplied which is provided with macrostructuring on at least one side. A friction lamella blank is separated out from the steel sheet, and is further processed into an annular lamella body.
  • a friction coupling containing at least one friction lamella manufactured by the method according to the invention uses a pure steel/steel friction pair. According to the invention, it has been found that the coatings which were previously always considered necessary can be dispensed with.
  • the method according to the invention is particularly advantageous in relation to the manufacturing costs, since the starting material for the friction lamellae can be provided in the form of a sheet steel coil, which is already provided with the desired macrostructuring. It is therefore not necessary to process each friction lamella individually so as to provide macrostructuring.
  • microstructuring refers herein to structuring of which the dimensions (in other words the depth or width of the structures) are much greater than the dimensions of microscopic structurings (for example the surface configuration due to some unavoidable surface roughness). Macrostructuring is distinguished in particular in that it is visible to the naked eye. The advantage of macrostructuring is that it improves the lubrication of the friction areas.
  • a preferred embodiment provides that the friction lamella blank is annealed. This increases the service life.
  • the macrostructuring is rolled onto both sides of the steel sheet. This makes it possible only to use the macrostructuring for every second lamella of the friction coupling, whilst the lamellae positioned in between can be configured with a smooth surface. This reduces the manufacturing costs overall.
  • a preferred embodiment provides that the macrostructuring on one side is rolled on offset from the macrostructuring on the other side. This prevents the friction lamella from being weakened by the resulting low wall thickness at the points where depressions of the macrostructuring “overlap one another”.
  • the offset in the macrostructurings may for example be achieved in that different divisions are used on one face and on the other. It is also possible to arrange the rollers used for rolling on the macrostructuring mutually offset in the circumferential direction, in such a way that the rolled-on patterns are mutually offset.
  • a honeycomb pattern has been found to be a particularly suitable pattern for the macrostructuring, since it can be rolled on in a simple manner and the orientation of the macrostructuring does not need to be taken into account when the lamella body is separated out from the steel sheet. Moreover, a lubricant can be held in the pockets formed at regular intervals.
  • a preferred embodiment of the invention provides that the friction areas are the outer face of the lamella body.
  • the lamella body is not produced with steel friction elements, and instead is produced to the thickness which the friction lamellae are subsequently to have.
  • the macrostructuring may have a structure depth in the range of 0.05 to 0.9 mm, in particular in the range of 0.2 to 0.4 mm. These values have been found to be a good compromise.
  • the width of a structural element may be in the range of 0.1 to 4 mm. These values are also advantageous.
  • At least one clearance in the lamella body is provided, in other words an opening extending continuously from one friction area to the other.
  • a clearance of this type improves the provision of the friction areas with a lubricant.
  • a comparatively large number of clearances may also be used, for example 40.
  • the number of clearances is in the range of 3 to 11.
  • the clearance may be configured as a slit. This makes it possible to provide a comparatively large region of the friction area with lubricant without sacrificing much of the friction area for this purpose.
  • a further advantage of slits is that they prevent friction lamellae from deforming as a result of thermal stresses and/or thermal expansions.
  • the slit may be arranged completely inside a friction lamella, in other words start and end at a distance from a circumferential edge of the friction lamella, or extend into the friction area from a circumferential edge and end at a distance from a circumferential edge, or else extend completely through a friction area, in other words from one circumferential edge to the other.
  • the slit has a width in the range of 0.1 to 5 mm, in particular in the range of 1.3 to 3 mm. These values represent a good compromise between supplying the friction areas with lubricant and a minimum loss of friction area.
  • One embodiment of the invention provides that the slit is at an angle of 0° to 70° to a radius of the friction lamella. In this orientation, centrifugal effects can be used to distribute lubricant well between the friction lamellae.
  • slit extends straight, curved or in a wave.
  • the clearance is located at least in part in a region of the lamella body at a distance from a circumferential edge corresponding to more than 10% of the width of the lamella body. This ensures that the lubricant is also distributed in the centre of the friction area and not only at the circumferential edge of the friction lamellae.
  • the lamella body forms a flat, planar disc.
  • the friction lamellae it is also possible for the friction lamellae to have a slightly frustum-like shape.
  • the lamella body is composed of a plurality of segments. These may be welded, glued or merely positively engaged together.
  • the friction lamella blank may be separated off from the steel sheet as a single-piece blank, for example by laser cutting, waterjet cutting, fine blanking or punching.
  • the friction lamella blank is annealed. This may in particular take place by nitriding or nitrocarburisation. It is also possible to provide the friction lamella blank with the desired hardness by plasma nitriding, salt bath annealing or other suitable methods.
  • One embodiment of the invention provides that microstructuring is superposed on the macrostructuring. As a result, the frictional properties can be improved in the desired manner.
  • the microstructuring may be introduced by a grinding process, for example using a belt sander. This method is distinguished by a low complexity and low costs.
  • FIG. 1 is a schematic sectional view of a friction coupling comprising friction lamellae manufactured by the method according to the invention
  • FIG. 2 shows a friction lamella according to a first embodiment in a front view, a rear view, a side view and an enlarged detail;
  • FIG. 3 shows a friction lamella according to a second embodiment in views corresponding to those of FIG. 2 ;
  • FIG. 4 shows a friction lamella according to a third embodiment in views corresponding to those of FIG. 2 ;
  • FIG. 5 shows a friction lamella according to a third embodiment in views corresponding to those of FIG. 2 ;
  • FIG. 6 schematically shows the steps of the method according to the invention.
  • FIG. 1 schematically shows a friction coupling 2 which serves to couple a first shaft 3 to a second shaft 4 in a frictional fit.
  • the shaft 3 is provided on the external circumference thereof with an entraining geometry which comprises a plurality of grooves 5 .
  • the shaft 4 is provided with a cage-like or cup-like recess 6 , which is likewise provided on the inner face thereof with an entraining geometry which comprises a plurality of grooves 7 .
  • a friction lamella packet 8 consisting of a plurality of lamellae of a first and a second type.
  • the entraining geometries of the shafts 3 , 4 may be toothings.
  • Each lamella has the underlying form of a circular ring.
  • the lamellae of the first type are coupled to the shaft 3 so as to be rotationally engaged but axially displaceable, and thus have an entraining geometry on the inner circumferential edge thereof
  • the friction lamellae of the second type are coupled to the shaft 4 so as to be rotationally engaged but axially displaceable, and thus have an entraining geometry on the outer circumferential edge.
  • the friction lamella packet 8 is compressed in the axial direction, in such a way that the friction lamellae are positioned biased against one another.
  • This bias may be produced in various ways.
  • a spring 9 is shown in this case.
  • FIG. 2 shows a friction lamella 10 according to a first embodiment.
  • This is a lamella of the second type of the friction lamella packet 8 of FIG. 1 , since the friction lamella 10 is provided with an entraining geometry 12 on the outer circumference thereof.
  • the entraining geometry 12 is formed by a plurality of radially projecting teeth (and clearances located between the teeth). The teeth of the entraining geometry 12 engage in the grooves 7 of the clearance 6 .
  • the friction lamella 10 comprises a lamella body 14 consisting of steel.
  • the lamella body 14 comprises a front face 16 and a rear face 18 . These form the friction areas of the friction lamella 10 .
  • the lamella body 14 is thus not provided with a coating and also not configured as a composite part made of a plurality of layers.
  • the front face 16 is configured smooth (apart from the microscopic surface roughness), whilst the rear face 18 is provided with macrostructuring 20 .
  • the macrostructuring 20 is formed as a honeycomb pattern, which has a depth in the range of 0.05 to 0.9 mm and in particular in the range of 0.2 to 0.4 mm.
  • the width of a structural element is in the range of 0.1 to 4 mm.
  • the macrostructuring extends over the entire friction area on the rear face 18 of the friction lamella, in other words into the region of the entraining geometry 12 .
  • the friction lamella 10 is provided with a plurality of clearances 30 , which in this case are each in the form of a slit.
  • Each slit 30 extends in a straight line and from the inner circumferential edge of the lamella body 14 .
  • the width b of each slit 30 is in the range of 0.1 to 5 mm and preferably in the range of 1.3 to 3 mm.
  • Each slit 30 extends obliquely with respect to a radius r of the lamella body, the angle being approximately 30° in the embodiment shown.
  • each slit 30 extends from the inner circumferential edge to the outer circumferential edge, and ends at a distance from the outer circumferential edge, the distance being approximately 25% of the width of the lamella body.
  • each slit 30 is configured rounded in a semicircle shape.
  • FIG. 3 shows a second embodiment of the friction lamella.
  • the same reference numerals are used, and in this regard reference is made to the above explanations.
  • the difference between the first and the second embodiment is that in the second embodiment the front face 16 of the friction lamella is also provided with the macrostructuring 20 .
  • the same macrostructuring is used on the front face 16 and the rear face 18 .
  • FIG. 4 shows a third embodiment of the friction lamella 10 .
  • the same reference numerals are used, and in this regard reference is made to the above explanations.
  • the difference between the first and the third embodiment is that in the third embodiment a single clearance 30 is used, which in this case extends as a continuous slit from the inner circumferential edge to the outer circumferential edge of the lamella body 14 .
  • the orientation relative to a radius corresponds to the orientation of the slit 30 in the first embodiment.
  • the slit 30 is not disadvantageous for the strength of the friction lamella 10 , since the lamella can be braced in the recess 6 thereof.
  • FIG. 5 shows a fourth embodiment.
  • the same reference numerals are used, and in this regard reference is made to the above explanations.
  • clearances 30 are used which start and end within the lamella body 14 , in other words do not form an interruption to the inner or outer circumferential edge.
  • clearances 30 are shown as clearances in this case: a straight slit orientated at an angle of 30° to a radius of the friction lamella, two circular openings, and a wave-shaped slit which extends over a circumferential range of somewhat less than 90°.
  • FIGS. 2 to 5 may be combined with one another in a manner dependent on the application.
  • the macrostructuring which is merely provided on one face of the friction lamella in the first, third and fourth embodiments may also be used on the other face.
  • friction lamellae shown in FIGS. 2 to 5 may of course also be used in friction lamellae of a first type, in other words in friction lamellae which have the entraining geometry 12 thereof on the inner circumferential edge thereof.
  • a steel sheet 1 is used as the starting material, and the desired macrostructuring is rolled onto it.
  • two schematically indicated rollers 2 are provided, on the surface of which a plurality of structural elements 3 are arranged.
  • the desired offset in the two macrostructurings can be achieved in that different step sizes, in other words different distances from pocket to pocket, are used on the upper face and the lower face, or in that the structural elements 3 on the rollers 2 are orientated mutually offset and this offset is maintained during rolling.
  • the steel sheet provided with the macrostructuring can subsequently be wound up, in such a way that it is supplied as a coil for the subsequent processing steps.
  • the lamella blanks 4 are separated out from the steel sheet 1 .
  • this is indicated by two punching tools 5 .
  • the lamella blanks may also be separated out from the steel sheet by laser cutting, waterjet cutting, fine blanking or other suitable methods.
  • Microstructuring is superposed on the macrostructuring provided in the lamella blanks 4 . It may in particular be introduced by grinding, for example using a belt sander. This is indicated by belt sanders 6 which grind the surface of the lamella blank 4 being conveyed onwards on a conveyer belt 7 . In this case, the lamella blank is rotated between the first and the second grinding process; this is indicated as method step 8 .
  • the lamella blanks 4 may additionally be annealed or further processed in some other manner. These further processing steps are indicated by reference numeral 9 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Operated Clutches (AREA)
US15/255,190 2015-09-02 2016-09-02 Method for manufacturing a steel friction lamella for a friction coupling Abandoned US20170056943A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015114673.8 2015-09-02
DE102015114673.8A DE102015114673A1 (de) 2015-09-02 2015-09-02 Stahl-Reiblamelle und Reibungskupplung mit solchen Reiblamellen und Verfahren zur Herstellung einer solchen Reiblamelle

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US20170056943A1 true US20170056943A1 (en) 2017-03-02

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US (1) US20170056943A1 (enrdf_load_stackoverflow)
JP (1) JP2017083007A (enrdf_load_stackoverflow)
CN (1) CN107246448A (enrdf_load_stackoverflow)
AT (1) AT517814A3 (enrdf_load_stackoverflow)
DE (1) DE102015114673A1 (enrdf_load_stackoverflow)
FR (1) FR3040453A1 (enrdf_load_stackoverflow)

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US20190345989A1 (en) * 2018-05-11 2019-11-14 Borgwarner Inc. Friction disk and frictionally acting device with such a friction disk

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US10975919B2 (en) * 2018-03-06 2021-04-13 Schaeffler Technologies AG & Co. KG Laser etching of patterns on a surface for friction material adhesion
DE102019204988A1 (de) * 2019-04-08 2020-10-08 Zf Friedrichshafen Ag Lamelle für eine Lamellenkupplung, Lamellenkupplung mit der Lamelle sowie Verfahren zur Herstellung der Lamelle

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DE102011120811A1 (de) * 2011-12-10 2013-06-13 Volkswagen Aktiengesellschaft Reiblamellen, Lamellenkupplung und Verfahren zur Herstellung von Reiblamellen

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DE102015114673A1 (de) 2017-03-02
AT517814A2 (de) 2017-04-15

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