Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
  • B21J15/00—Riveting
  • B21J15/02—Riveting procedures
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
  • B21J15/00—Riveting
  • B21J15/10—Riveting machines
  • B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
  • B21J15/00—Riveting
  • B21J15/10—Riveting machines
  • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
• • 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
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
  • F16B19/04—Rivets; Spigots or the like fastened by riveting
  • F16B19/06—Solid rivets made in one piece
• • 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

Definitions

• the present invention relates to a rivet, a riveting device and a riveting method for riveting two elements in a drive train of a
• the coupling elements are riveted together.
• the coupling elements are riveted together.
• a clutch disc drive plate and pad spring arranged on a riveting device such that their openings come to lie one above the other.
• a rivet is inserted, which is then deformed by pressure such that its rivet shank fills the opening, whereby the two elements are positively connected with each other.
• riveting devices Since usually not only a rivet, but a number of rivets are necessary to produce, for example, the clutch disc, riveting devices, so-called assembly tables, are used in which automated rivet holders are provided with substantially vertically aligned rivets on which then the to riveting elements are arranged, and in a single riveting step, all rivets are pressed together.
• Object of the present invention is therefore a rivet, a
• the present invention is based on the idea of speeding up the riveting process by combining the riveting and embossing steps into one step.
• a riveting device is advantageously used, which has a receptacle for receiving a rivet, wherein the receptacle also has an embossing punch.
• an impression on a setting head of the rivet can already be formed during the pressing, that is to say during the actual riveting step. It is particularly advantageous if the receptacle is formed integrally with the die.
• the simultaneous has
• the invention proposes to use a rivet, which has a shielding and / or an undercut on its setting head.
• a rivet which has a shielding and / or an undercut on its setting head.
• a Schirnnung of ca.0,05 to 0,1 mm or in other words a shielding at an angle of less than 10 ° has proven to be advantageous.
• an undercut which is executed at an angle of more than 60 ° with respect to the rivet shank.
• the embossing or the die is not round, as known from the prior art, but has at least one indentation or a meandering, triangular, quadrangular, polygonal, star-shaped or flower-shaped circulatory contour. Due to this non-round imprint of the bearing pressure, in particular in the
• the indentation has a sloping edge region, so that the inner contour profile of the indentation merges into a slope in the plane of the setting head.
• the outer dimensions of the impression are smaller than the internal dimensions of the opening in the elements to be riveted. This has the advantage that the imprint directly improves the bearing behavior of the rivet in the opening.
• the die has the largest possible contact surface. By the largest possible designed support surface tilting of the rivet from the perpendicular during the setting step can be prevented.
• FIG. 1 shows a schematic representation of a first preferred embodiment of the rivet according to the invention
• FIG. 2 shows a schematic representation of a second preferred embodiment of the rivet according to the invention
• FIG. 3 shows a schematic representation of a third preferred embodiment of the rivet according to the invention.
• Embodiment of erfindunmultien rivet with inventive imprinting shows a schematic cross-sectional view through a compressed rivet
• FIG. 7 shows a schematic representation of a riveting device in various stages of the riveting method according to the invention.
• FIG. 8 shows an enlarged view of the riveting device from FIG. 7;
• Fig. 1 shows schematically a side view of a rivet 1 with a
• the rivet shank 4 can also have a conical end portion 6, to allow easy insertion of the rivet 1 in an opening or openings of elements to be riveted (not shown).
• the rivet 1 according to the invention is advantageously used in the riveting method according to the invention described below.
• the inventive rivet may be used in any other method.
• the inner edge 8 of the setting head 2 has no substantially perpendicular angle to the outer surface 10 of the rivet shank 4, but that they are at an angle ⁇ relative to a substantially vertical
• Alignment of the inner surface 8 of the setting head 2 is deflected.
• the angle ⁇ is preferably less than about 10 °, so that, for example, in a Flachkopfniet the Abnniliae 5.0 x 11.3 a Vorleung of about 0.05 to 0.1 mm is formed.
• the rivet 1 can also be formed with a free seat 12.
• a free seat 12 Such an exemplary embodiment is shown in FIG. 2, in which the setting head 2 of the rivet 1 has a free seat 12 on its inner surface 8 facing the rivet shank 4 in the region of the rivet shank 4.
• the free seat 12 is preferably designed such that it forms an angle ⁇ with the outer surface 10 of the rivet shank 4. This angle ⁇ is preferably greater than 60 °.
• the patio 12 can be created for example by milling or turning.
• FIG. 3 again shows a rivet 1 with a rivet shank 4 and a setting head 2, the inside 8 of the setting head 2 being pre-screened both against the rivet shank 4 and also having a free seat 12.
• This embodiment is clearly shown in Figure 4, in which the inner edge 8 is again an angle ⁇ relative to a substantially vertical orientation of the inner edge inclined.
• the substantially vertical orientation of the inner edge is shown in FIG. 4, and thus the course of the shielding is schematically indicated by the reference numeral 14 as a dashed line.
• Inner edge 8 of the setting head 2 cause the setting head 2 is not flat against the element to be riveted. If appropriate, this can even lead to the rivet shank not being aligned substantially parallel to the opening in the element to be riveted before the actual riveting operation, but being tilted, so that the hole filling behavior is impaired. Free seat 12 and shield 14, however, allow a plan concerns the inner surface 8 of the setting head 2 to the
• the free seat 12 and the shield 14 have the advantage that a parachute, i. Bending of an edge region 16 of the setting head 2 during the formation of the embossment or in a subsequent embossing step is prevented.
• the screen is formed by the fact that the material of the setting head 2 deformed by the pressure of the stamping die and a bulge in the area between setting head 2 and rivet shank 4 forms, which lifts the edge region 16 of the material to be riveted.
• the rivet 1 has a free seat 12 or a shielding 14, it can be filled with the material resulting from the embossing, so that an improved contact between the setting head 2 and the element to be riveted is achieved.
• 5 shows a plan view of a setting head 2 of a rivet 1 with an indentation 20, wherein the indentation 20 has a star-shaped outer contour 22, which merges into the surface 24 of the setting head 2, and an embossed recessed surface 26, which of an inner contour 28 is limited.
• the imprint 20 itself may have any shape. However, it should show the largest possible and shallow recessed area 26.
• Circumferential contour 22, 28 of the indentation 20 may be triangular, quadrangular, star-shaped, flower-shaped or meander-shaped.
• the star-shaped meandering shape which is shown schematically in FIG. 5, has proved to be particularly advantageous.
• the edge region 30 between inner contour 28 and outer contour 22 is preferably chamfered, so that the surface 24 of the setting head 2 merges via the chamfered edge region 30 into the recess surface 26 of the embossment 20.
• the maximum diameter D of the indentation 20 is smaller than the inner diameter of the openings in the elements to be riveted.
• the dimensions are shown schematically in Fig.6 again.
• Fig. 6 shows a cross-section through a rivet 1, which is guided through openings 32, 24, in two elements 36, 38 and pressed therein, so that the two elements 36, 38 are riveted together.
• the rivet shank 4 is deformed in such a way that the openings 32, 34 in the elements 36 and 38 are filled up with material of the rivet shank 4, and the rivet shank 4 also has a deformed area 40 at its end area, which has the two riveted
• FIG. 6 shows schematically the indentation 20 with the embossed recess surface 26 and the beveled edge region 30.
• Figure 6 shows that the maximum diameter D that is the maximum dimensions of the indentation 20 are smaller than the inner diameter d of the openings 32nd , 34.
• FIG. 7 shows a plan view of a riveting device for riveting
• FIG. 7 shows the riveting device 46 at different stages during the process
• the area marked I corresponds to the state of the riveting device 46 before the riveting process or after removal of the finished area
• the riveting device 46 has receptacles 48 which also equipped with an embossing stamp 50.
• the embossing punch 50 is, as shown here, preferably star-shaped or with a meandering
• Circumferential contour formed and has a flat support surface 52. This can be seen in particular in the enlarged view of FIG.
• the support surface 52 is formed as large as possible, so that a rivet 1 on her, im
• FIG. 7 The vertical arrangement of a rivet 1 can also be clearly seen in the enlarged detail of FIG.
• the arrangement of the rivets 1 takes place in a first method step, in which the receptacles 48 are equipped with rivets 1.
• This process stage is shown in FIG. 7 in the image section area II.
• the first element to be riveted 36 here a pad spring
• the second element 38 to be riveted which in the case shown in FIG. 7 is a driver disk, is arranged above the lining springs 36, the rivets 1 again projecting through openings 34 provided in the driver disk. Placing the rivets and then placing them to
• riveting elements above the rivets is also called setting step.
• Riveting is simultaneously on the punch 50 in the face of the
• the depression surface 26 merges via a bevelled edge region 30 into the setting head surface 24.
• the meandering or star-shaped allows

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Insertion Pins And Rivets (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=43446407

Family Applications (1)

Country Status (4)

Families Citing this family (4)

Family Cites Families (21)

• 2009
  • 2009-10-19 DE DE200910045791 patent/DE102009045791A1/de not_active Withdrawn
• 2010
  • 2010-10-13 EP EP10768727A patent/EP2490841A1/de not_active Withdrawn
  • 2010-10-13 WO PCT/EP2010/065312 patent/WO2011047993A1/de active Application Filing
  • 2010-10-13 CN CN201080042977XA patent/CN102548683A/zh active Pending

Non-Patent Citations (1)

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