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DE-102014112005-B4 - Method for mounting a pendulum damping device

DE102014112005B4DE 102014112005 B4DE102014112005 B4DE 102014112005B4DE-102014112005-B4

Abstract

Method for mounting a pendulum damping device (1) comprising at least one pendulum mass (3) which is movably mounted on a support (2), wherein the mass (3) comprises two parts (3a, 3b) which are arranged on both sides of the support (2) and are connected to each other by at least one crossbar (17) which passes through an opening (12) of the support (2), wherein a roller (15) is arranged between the crossbar (17) and the edge of the opening (12), characterized in that the method comprises the following steps: a) Pressing a first end (17a) of the crossbar (17) into an opening (26) of the first part (3a), b) Positioning the support (2) such that the crossbar (17) penetrates the corresponding opening (12) of the support (2), c) Positioning the roller (15) between the crossbar (17) and the edge of the opening (12) of the support (2), d) Pressing a second end (17b) of the crossbar (17) into an opening (26) of a second part (3b) of the mass (3), wherein the ends (17a, 17b) of the crossbar (17) are pressed in such a way that they lie flush against the outer surfaces (19) of the parts (3a, 3b) of the mass (3), i.e. the surfaces opposite the support (2).

Inventors

  • Marc RAY
  • Roel Verhoog
  • Franck Cailleret

Assignees

  • VALEO EMBRAYAGES

Dates

Publication Date
20260513
Application Date
20140821
Priority Date
20130823

Claims (15)

  1. A method for assembling a pendulum damping device (1) comprising at least one pendulum mass (3) movably mounted on a support (2), wherein the mass (3) comprises two parts (3a, 3b) arranged on either side of the support (2) and connected to each other by at least one crossbar (17) passing through an opening (12) of the support (2), wherein a roller (15) is arranged between the crossbar (17) and the edge of the opening (12), characterized in that the method comprises the following steps: a) pressing a first end (17a) of the crossbar (17) into an opening (26) of the first part (3a), b) positioning the support (2) such that the crossbar (17) penetrates the corresponding opening (12) of the support (2), c) positioning the roller (15) between the crossbar (17) and the edge of the opening (12) of the support (2), d) Pressing a second end (17b) of the crossbar (17) into an opening (26) of a second part (3b) of the mass (3), wherein the ends (17a, 17b) of the crossbar (17) are pressed in such a way that they lie flush against the outer surfaces (19) of the parts (3a, 3b) of the masses (3), i.e. the surfaces opposite the support (2).
  2. Procedure according to Claim 1 , characterized in that at least one of the ends (17a, 17b) of the crossbar is subsequently welded to the part (3a, 3b) of the mass.
  3. Procedure according to one of the Claims 1 and 2 , characterized in that the cross member (17) is positioned in relation to the first part (3a) of the mass (3) and/or in relation to the second part (3b) of the mass (3) by means of guide pieces (39, 40, 41).
  4. Procedure according to Claim 3 , characterized in that each part (3a, 3b) of the mass (3) is guided relative to a first base (37) by means of at least one first projecting guide element (39a, 39b) of the first base (37).
  5. Procedure according to Claim 3 or 4 , characterized in that the first end (17a) of the crossbar (17) is connected relative to the first base (37) by means of at least a second projecting guide is guided by the rung piece (40a, 40b) of the first base (37).
  6. Procedure according to one of the Claims 3 until 5 , characterized in that the second end (17b) of the crossbar (17) is guided relative to a second base (38) by means of at least a third projecting guide element (41a, 41b) of the second base (38).
  7. Procedure according to Claim 6 , characterized in that the ends (17a, 17b) of the crossbar (17) are pressed into the corresponding openings (26) of the parts (3a, 3b) of the mass (3) by bringing the first and second bases (37, 38) which rest on the first part (3a) and on the second part (3b) of the mass (3) close together.
  8. Procedure according to one of the Claims 5 until 7 , characterized in that the second guide piece (40a, 40b) and/or the third guide piece (41a, 41b) penetrate the opening of the corresponding part (3a, 3b) of the mass (3) during steps (a) and (d).
  9. Procedure according to one of the Claims 3 until 8 , characterized in that each part (3a, 3b) of the mass (3) comprises a radially inner edge (20) and a radially outer edge (21), wherein the first base (37) comprises three first guide pieces (40a, 40b), of which two (40a) are arranged in complementary bearings (25) of the radially inner edge (20) of each part (3a, 3b) of the mass (3), and of which one (40b) is arranged in a complementary bearing (23) of the radially outer edge (21) of each part (3a, 3b) of the mass (3), or vice versa.
  10. Procedure according to Claim 4 or 5 , characterized in that the cross member (17) comprises a radially inner edge (31) and a radially outer edge (32), wherein the first base (37) or the second base (38) comprises three second guide pieces (40a, 40b) or three third guide pieces (41a, 41b), of which two (40a, 41a) are arranged in complementary bearings (33) in the region of the radially inner edge (31) of each cross member (17), and of which one (40b, 41b) is arranged in a complementary bearing (30) in the region of the radially outer edge (32) of the cross member (17), or vice versa.
  11. Procedure according to one of the Claims 1 until 10 , characterized in that each end (17a, 17b) of the cross member (17) has a curved radial inner edge (31) and/or a curved radial outer edge (32), such that each end (17a, 17b) bends when pressed into the opening (26) of the first part (3a) and/or the second part (3b) of the mass (3).
  12. Procedure according to one of the Claims 1 until 11 , characterized in that each part (3a, 3b) of the mass (3) comprises a deformable zone located radially inside the opening (26) used for pressing in the crossbar (17), wherein the zone deforms when the corresponding end (17a, 17b) of the crossbar (17) is pressed in.
  13. Procedure according to one of the Claims 1 until 12 , characterized in that the crossbar (17) is equipped with at least one stop (46, 49) which is designed to come into contact with the edge of the opening (12) of the support (2) during operation.
  14. Pendulum damping device (1) comprising at least one pendulum mass (3) movably mounted on a support (2) which is designed to be driven rotationally, wherein the mass (3) comprises two parts (3a, 3b) arranged on either side of the support (2) which are connected to each other by at least one crossbar (17) extending through an opening (12) of the support (2), wherein a roller (15) is arranged between the crossbar (17) and the edge of the opening (12), wherein the ends (17a, 17b) of the crossbar (17) are pressed onto the two parts (3a, 3b) of the mass (3), and wherein the ends (17a, 17b) of the crossbar (17) are flush with the outer surfaces (19) of the parts (3a, 3b) of the mass (3), i.e., on the surfaces opposite the support (2). Areas.
  15. Device according to Claim 14 , characterized in that at least one of the ends (17a, 17b) of the crossbar (17) is also attached to the part (3a, 3b) of the mass (3) by welding.

Description

The invention relates to a method for assembling a pendulum damping device. Such a device, also called a pendulum oscillator or pendulum, is particularly intended for use in the drive train of a motor vehicle. In a motor vehicle drivetrain, at least one torsional damping system is generally assigned to a clutch that is suitable for selectively connecting the engine to the transmission. An internal combustion engine exhibits rotational irregularities due to the explosions that take place successively in the cylinders of the engine, with these rotational irregularities varying particularly depending on the number of cylinders. The damping system conventionally comprises springs and friction elements whose function is to filter out vibrations caused by the rotational irregularities of the engine and which are used before the drive torque is transmitted to the transmission. This prevents such vibrations from entering the transmission and causing unwanted shocks, noise, and disturbances. To further improve the filtering, it is known to use a pendulum damping device in addition to the usual damping device. The patent application FR 2 981 714 A1 On behalf of the applicant, a pendulum damping device is disclosed, comprising an annular support designed to be driven to rotate about its axis, and pendulum masses mounted on the outer periphery of the support. Each mass performs a pendulum motion during operation and comprises two parts mounted axially on either side of the beam and connected by two crossbars, each passing through an opening in the beam. A roller is mounted between a track recessed in each crossbar and the edge of the corresponding opening in the beam. In response to rotational irregularities or non-uniformities, each mass shifts such that its center of mass oscillates like a pendulum. The oscillation frequency of each mass is proportional to the rotational speed of the drive shaft, with the corresponding multiple potentially taking on a value close to the harmonic rank that is responsible for the vibrations causing the strong rotational irregularities near idle. The cross braces are attached to the two parts of the mass by rivets. The rivet heads rest on the radially outer surfaces of the mass parts, i.e., on the surfaces opposite the annular support, and thus project axially beyond the mass parts. The volume swept through during operation is relatively large, which is why it is necessary to dimension the surrounding parts accordingly. The load-bearing cross-section of the rivet is generally smaller than the total cross-section of the part to be joined, and therefore smaller than that of the pressed-in cross member. The cross member's shape is simpler and therefore easier to manufacture. The DE 10 2009 042 812 A1 shows a similar pendulum damping device. The object of the invention is to eliminate this disadvantage, and for this purpose a method for mounting a pendulum damping device with the features of claim 1 is proposed. The firm insertion of each end of the crossbar into an opening in one of the parts of the mass makes it possible to reduce the overall space requirement of the mass. It is not necessary for the ends of the crossbar to extend axially outside the openings. The ends of the cross brace are inserted in such a way that they lie flush against the outer surfaces of the parts of the mass, i.e. the surfaces opposite the support. According to a feature of the invention, at least one of the ends of the crossbar is then welded to the part of the mass. According to a feature of the invention, the crossbar is positioned in relation to the first part of the mass and/or in relation to the second part of the mass by means of guide pieces. This ensures the correct positioning of both parts, the mass and the cross brace, throughout the entire assembly process. In particular, each part of the mass can be guided with respect to a first base by means of at least one first projecting guide element of the first base. Furthermore, the first end of the crossbar can be guided in relation to the first base with the help of at least one second projecting guide piece of the first base. Furthermore, the second end of the crossbar can be guided in relation to a second base with the aid of at least a third projecting guide piece of the second base. In this case, the ends of the crossbar can be firmly inserted into the corresponding openings of the parts of the mass by bringing the first and second bases, which respectively rest on the first part and on the second part of the mass, closer together. Each base presses down on one of the parts of the mass to ensure that the ends of the crossbar can be inserted into the openings of the parts. According to a further feature of the invention, the second guide piece and/or the third guide piece pass through the opening of the corresponding part of the mass during steps (a) and (d). Preferably, each part of the mass comprises a radially inner edge and a radially outer edge,