WO2018086648A1 - Pendule centrifuge - Google Patents

Pendule centrifuge Download PDF

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Publication number
WO2018086648A1
WO2018086648A1 PCT/DE2017/100817 DE2017100817W WO2018086648A1 WO 2018086648 A1 WO2018086648 A1 WO 2018086648A1 DE 2017100817 W DE2017100817 W DE 2017100817W WO 2018086648 A1 WO2018086648 A1 WO 2018086648A1
Authority
WO
WIPO (PCT)
Prior art keywords
pendulum
masses
mass carrier
centrifugal
pendulum mass
Prior art date
Application number
PCT/DE2017/100817
Other languages
German (de)
English (en)
Inventor
Peter Roland
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to DE112017005660.8T priority Critical patent/DE112017005660A5/de
Publication of WO2018086648A1 publication Critical patent/WO2018086648A1/fr

Links

Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range

Definitions

  • the invention relates to a centrifugal pendulum with a rotatably mounted about an axis arranged pendulum mass carrier and distributed over the circumference, supported by two circumferentially spaced pendulum bearings on the pendulum mass carrier under centrifugal force of the rotating pendulum mass carrier radially outward and pendulum supported pendulum masses, the pendulum bearings each axially have opposite recesses with raceways in the pendulum masses and the pendulum mass carrier, on soft tracks a recesses axially overlapping pendulum roller rolls.
  • Centrifugal pendulum serve the speed-adaptive torsional vibration damping of torsional vibrations in drive trains, which are caused in particular by an internal combustion engine serving as a drive in the drive train.
  • Such centrifugal pendulums are arranged for example on an input and / or output side of a torsional vibration damper, a clutch disc, a friction clutch, a hydrodynamic torque converter, a flywheel or the like or separately in rotational connection with a crankshaft of the internal combustion engine.
  • a pendulum mass carrier of the centrifugal pendulum is rotatably arranged about a rotation axis.
  • Relocatable pendulum mass units are suspended from the pendulum mass carrier by means of spherical rollers, which are aligned in the self-adjusting centrifugal force field under centrifugal force of the rotating pendulum mass carrier and are adjusted by corrective pendulum movements when torsional vibrations occur. gene absorb the kinetic energy of torque peaks and caching and release again, so that a calmed torque curve is achieved. From DE 10 2012 212 970 A1 a arranged in a torsional vibration damper centrifugal pendulum is known.
  • the individual pendulum mass units or pendulum masses against the pendulum mass carrier formed from side parts by means of a radial profile in the form of profiled spherical rollers with two circumferential Borden out to make their pendulum motion uniform and to guide the spherical rollers positionally secured.
  • a centrifugal pendulum in which pendulum masses are arranged on both sides of the pendulum mass carrier and axially opposite pendulum masses are connected by means of recesses of the pendulum mass carrier by cross-connecting means for pendulum mass units.
  • the recesses In order to be able to introduce the spherical roller with radial profile into the recesses of the pendulum flange or the pendulum masses arranged between the disc parts, the recesses must at least have the diameter of the radial profile. This allows the spherical roller to rotate during operation with insufficient centrifugal force about its longitudinal axis and parts of the radial profile can immerse in the recesses, which can lead to noise, malfunction and damage the centrifugal pendulum.
  • the object of the invention is the development of a centrifugal pendulum with increased reliability.
  • the object of the invention is to propose a centrifugal pendulum, the spherical rollers remain positionally secured in the recesses even with low or nonexistent centrifugal force.
  • the proposed centrifugal pendulum is particularly intended for a drive train of a motor vehicle and can be used separately as a speed-adaptive torsional vibration damper.
  • the centrifugal pendulum can be integrated in a one-mass flywheel, which is connected directly to the crankshaft of the internal combustion engine.
  • the centrifugal pendulum be integrated into another unit of the drive train, for example, on and / or output side in a torsional vibration damper such as a dual mass flywheel, for example in a clutch disc, in a friction clutch, in a hydrodynamic torque converter or to a rotor of an electric machine or the like ,
  • a pendulum mass carrier arranged so as to be rotatable about an axis of rotation is provided, on which at least one pendulum masses, which are preferably distributed between two and six circumferentially distributed pendulum masses, are displaceable by means of two pendulum bearings spaced apart from one another in the circumferential direction.
  • the pendulum bearings are each formed of axially juxtaposed recesses with tracks of the pendulum mass carrier and the pendulum mass.
  • the axial adjacent recesses pass through a pendulum roller and roll on their careers, so that the pendulum masses are supported radially outward against the action of centrifugal force and added pendulum in the centrifugal force field on pendulum mass carrier.
  • the spherical rollers roll in each case on tracks with predetermined shape curves, which are provided complementary to each other in the pendulum masses and in the pendulum mass carrier.
  • pendulum vibration of a pendulum mass for example, a pendulum oscillation in free form or a pendulum oscillation corresponding to a bifilar pendulum suspended parallel or trapezoidal.
  • centrifugal pendulum pendulum mass carrier rotatably mounted about a rotation axis and a plurality of pendulum masses arranged distributed over the circumference.
  • the pendulum masses are supported by means of two spaced apart circumferentially pendulum bearings on the pendulum mass carrier under centrifugal force of the rotating pendulum mass carrier radially outward and added pendulum.
  • the self-aligning bearings each have axially opposite recesses with raceways in the pendulum masses and in the pendulum mass carrier. On the tracks rolls a the recesses axially overlapping spherical roller. Essentially, two embodiments of such centrifugal pendulum pendulum are provided.
  • the pendulum mass carrier may be formed as a pendulum.
  • a pendulum flange is to be understood as meaning a single or a plurality of segmented, essentially radially aligned disk parts with recesses and raceways for the spherical rollers.
  • On the pendulum pendulum masses are arranged on both sides, each axially adjacent as For example, have axially aligned recesses with raceways.
  • Two mutually axially opposed pendulum masses are connected to each other by means of connecting means which pass through recesses of the pendulum, which are dimensioned so that the pendulum masses can swing undisturbed along their intended pendulum track with a corresponding swing angle.
  • the pendulum masses connected in this way form a pendulum mass unit.
  • the connecting means may be designed as stops for limiting the oscillation angle of the pendulum mass units and for this purpose have, for example, stop dampers such as rubber elements or the like.
  • the alternative embodiment of a centrifugal pendulum includes a pendulum mass carrier, which is formed from two substantially radially aligned disc parts or disc subsegments.
  • the disc parts have a receiving portion with axially spaced apart disc sections, between which the pendulum masses are received.
  • the disk parts may be formed substantially flat as ring parts or radially inside or radially outside in corresponding contact portions together and connected to each other.
  • the pendulum bearings are formed from axially opposite recesses with raceways in the disc parts and recesses with raceways in the pendulum masses and each one of the axially adjacent recessesteurdeci- the pendulum role.
  • the spherical rollers have a the recesses at least partially overlapping radial profile. This is to be understood that the spherical rollers each radially overlap the recesses in the region of their WälzANDs to a career.
  • a ring board or the like may be provided as a radial profile.
  • the ring board so the radial profile has for this purpose a corresponding, the recess radially overlapping radial height.
  • a radial clearance of the pendulum masses relative to the pendulum mass carrier is limited to a radial height of the radial profile.
  • the spherical rollers can lose their rolling contact to the raceways by falling radially, for example, in an arrangement above the axis of rotation in the absence of centrifugal force, a rotation of the spherical roller from its longitudinal axis insofar as it is prevented that immersion of the ring rims is avoided in the corresponding recess.
  • This is done by a Radialspielbegrenzung between pendulum mass carrier and pendulum masses.
  • the Radialspielbegrenzung can be provided by appropriate stops between pendulum mass and Pen- delmassenexcellent.
  • the attacks can be formed axially expanded in particular from the pendulum mass carrier.
  • the radial clearance can be formed substantially constant over a swing angle of the pendulum masses.
  • the attacks with radial play stops are modeled on the pendulum movements of the pendulum masses relative to the pendulum mass carrier.
  • the radially inner stop profile may be provided on the outer circumference of the pendulum masses, for example punched or reworked tool falling.
  • the stops on the pendulum mass carrier can be provided as axially extended pins.
  • the pins can be pressed into openings of the pendulum mass carrier, screwed or otherwise connected to this.
  • a pin can be widened in both axial directions and thus form a stop for both pendulum masses of a pendulum mass unit.
  • the pins between the two disc parts can be arranged and fixed or extended only a short pin of a disc part. It is understood that instead of the pins and noses from the pendulum mass carrier can be issued or stamped.
  • the pins can be made of steel or plastic.
  • an elastic coating may be provided on the pendulum masses and / or on the pins.
  • a stop surface may be provided, which is substantially parallel to the track of the pendulum mass is guided.
  • the sheath may be formed, for example, as an O-ring.
  • a single stop buffer per pendulum mass or pendulum mass unit may be provided in the circumferential direction between the two pendulum bearings, wherein the elastic sheath may be V-shaped.
  • a stop geometry of the pendulum masses relative to the stop such as pin, which is formed steeper than the raceway of the pendulum masses radially outward in the pendulum direction of the pendulum mass.
  • FIG. 2 shows a partial view of a centrifugal force pendulum modified relative to the centrifugal pendulum of FIG. 1,
  • FIG. 3 is a centrifugal pendulum of Figure 2 similar centrifugal pendulum in the same representation
  • FIG. 4 shows the centrifugal pendulum of FIG. 3 with several partial views superimposed at different oscillation angles.
  • FIG. 1 shows a section of the centrifugal pendulum pendulum 1 arranged so as to be rotatable about an axis of rotation in section.
  • the centrifugal pendulum 1 is designed as a variant with the pendulum mass carrier 2 shown in the two disc parts 3, 4.
  • the two disc parts 3, 4 take in the receiving portion 5 distributed over the circumference arranged pendulum masses 6, of which only a single pendulum mass 6 is shown in section, axially between them.
  • the pendulum masses 6 are accommodated in a pendulum manner by means of pendulum bearings 7, which are each spaced apart in the circumferential direction, relative to the pendulum mass carrier 2.
  • the self-aligning bearings 7 in the disk parts 3, 4 and in the pendulum masses 6 axially opposite recesses 8, 9 with raceways 10, 1 1, on which roll the recesses 8, 9 axially overlapping spherical rollers 12.
  • the spherical rollers 12 have for axial positioning on the pendulum masses 6 and on the disk parts 3, 4, the radial profile 13 with the two ring rims 14 with the radial height h. In order to add the spherical rollers 12 in the recess 8, this has a corresponding clear width.
  • the centrifugal pendulum 1 is shown in a stationary state without centrifugal force and arranged above the axis of rotation pendulum mass 6.
  • the pendulum mass 6 falls radially inwards.
  • the pins 15 are arranged between the two disc parts 3, 4, which form the abutment 16 to the stop surfaces 17 of the pendulum masses 6 after exhaustion of a radial clearance.
  • the radial clearance used here is over the entire oscillation angle of the pendulum 6 smaller than the radial height h, so that the ring rims 14 at each
  • FIG 2 shows the centrifugal pendulum 1 of Figure 1 with respect to the supported pendulum masses 6 similar centrifugal pendulum 1 a in partial view.
  • the pendulum mass carrier 2a is formed as a pendulum flange 3a, arranged on both sides pendulum masses 6a and connected by means of the connecting means 18a, 19a such as standoffs to pendulum mass units 20a.
  • the connecting means 18a, 19a such as standoffs to pendulum mass units 20a.
  • On the pendulum flange 3a corresponding recesses 21a, 22a, for the connecting means 18a, 19a are provided for this purpose.
  • the spherical rollers 12a of the pendulum bearing 7a have the radial profile 13a with the ring rims 14a, which radially engage over the recesses 9a of the pendulum flange 3a.
  • the radial clearance is set s, which is smaller than the height h of the ring rims 14a, so that immersion of the ring rims 14a in the recesses 9a is avoided.
  • the radial play s between the pendulum flange 3a and pendulum masses 6a in the operating state shown at radially outwardly accelerated pendulum masses 6a in the centrifugal force field is set between the radially arranged within the pendulum bearing 7a pins 15a and the abutment surfaces 17a of the pendulum masses 6a.
  • the abutment surfaces 17a are formed bent in the circumferential direction and adapted to the course of the raceways 10a of the pendulum masses 6a to form the radial clearance s constant over the swing angle of the pendulum masses 6a.
  • the connecting means 18a are in this case provided with a non-visible elastic sheath, for example O-rings, in order to achieve elastic stops and at least to reduce the formation of noise.
  • FIG. 3 shows the centrifugal pendulum 1 a of Figure 2 similar centrifugal pendulum 1 b.
  • the connecting means 18b, 19b of the pendulum mass carrier 2b arranged on both sides on the pendulum mass carrier 2b, which is designed as a pendulum flange 3b, are arranged between the self-aligning bearings 7b viewed in the circumferential direction.
  • the recess 21 b is also provided for the connecting means 18b, 19b between the pendulum bearings 7b in the pendulum flange 3b.
  • the limitation of the oscillation angle of the pendulum masses 6b takes place by means of the stop buffer designed as a connecting means 18b, which for this purpose have the V-shaped casing 23b made of an elastic material and strike elastic upon reaching the maximum swing angle on the walls of the recess 21b.
  • the course of the abutment surface 17b is to illustrate a uniform radial clearance s on the swing angle of the pendulum masses 6b the outer circumference of the pendulum masses 6b compared to the recorded in the pendulum flange 3b pins 15b towards larger angles of oscillation steeper than the course of the tracks 10b of the pendulum masses 6b.
  • the radial clearance s between the pin 15b and the correspondingly shaped abutment surface 17b remains constant over the oscillation angle ⁇ .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un pendule centrifuge (1) comprenant un support de masses pendulaires (2) disposé de manière à pouvoir tourner autour d'un axe de rotation et plusieurs masses pendulaires (6) disposées de manière répartie sur la périphérie, supportées radialement vers l'extérieur et logées de manière oscillante sur le support de masses pendulaires (2) au moyen de respectivement deux paliers de pendule (7) espacés dans la direction périphérique sous l'effet de la force centrifuge du support de masses pendulaires (2) en rotation, les paliers de pendule (7) comprenant respectivement des évidements (8, 9) opposés axialement et dotés de chemins de roulement (10, 11) dans les masses pendulaires (6) et dans le support de masses pendulaires (2), chemins de roulement (10, 11) sur lesquels roule un rouleau de pendule (12) recouvrant axialement les évidements (8, 9). Afin de retenir les rouleaux de pendule (12) à leurs positions axiales en cas d'absence de force centrifuge, les rouleaux de pendule (12) présentent un profil radial (13) recouvrant au moins partiellement les évidements (8, 9) et un jeu radial (s) des masses pendulaires (6) par rapport au support de masses pendulaires (2) est limité au maximum à une hauteur radiale (h) du profil radial (13).
PCT/DE2017/100817 2016-11-10 2017-09-25 Pendule centrifuge WO2018086648A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112017005660.8T DE112017005660A5 (de) 2016-11-10 2017-09-25 Fliehkraftpendel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016222104 2016-11-10
DE102016222104.3 2016-11-10

Publications (1)

Publication Number Publication Date
WO2018086648A1 true WO2018086648A1 (fr) 2018-05-17

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Application Number Title Priority Date Filing Date
PCT/DE2017/100817 WO2018086648A1 (fr) 2016-11-10 2017-09-25 Pendule centrifuge

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DE (2) DE112017005660A5 (fr)
WO (1) WO2018086648A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112211957A (zh) * 2019-07-12 2021-01-12 舍弗勒技术股份两合公司 配属于离心摆的摆质量件的滑动元件的固定结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018102561A1 (de) * 2018-02-06 2019-08-08 Schaeffler Technologies AG & Co. KG Drehmomentübertragungseinrichtung
DE102022105657A1 (de) 2022-03-10 2023-09-14 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung und Drehmomentübertragungseinrichtung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100200347A1 (en) * 2009-02-09 2010-08-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Oil cavity for pendulum element (roller) of a centrifugal pendulum
FR2986593A1 (fr) * 2012-02-07 2013-08-09 Valeo Embrayages Dispositif d'amortissement pendulaire
DE102012212970A1 (de) 2012-02-28 2013-08-29 Schaeffler Technologies AG & Co. KG Drehmomentübertragungseinrichtung und Antriebsstrang mit Drehmomentübertragungseinrichtung
DE102013213008A1 (de) * 2012-07-06 2014-02-20 Schaeffler Technologies AG & Co. KG Drehschwingungstilger
DE102015205078A1 (de) * 2014-04-09 2015-10-15 Schaeffler Technologies AG & Co. KG Fliehkraftpendelvorrichtung
WO2016008482A1 (fr) * 2014-07-18 2016-01-21 Schaeffler Technologies AG & Co. KG Pendule centrifuge
DE102014221004A1 (de) * 2014-10-16 2016-04-21 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung mit Anschlag
DE102014224812A1 (de) * 2014-12-03 2016-06-09 Schaeffler Technologies AG & Co. KG Fliehkraftpendel
DE102015200766A1 (de) 2015-01-20 2016-07-21 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung und Drehschwingungsdämpfer
DE102015201126A1 (de) * 2015-01-23 2016-07-28 Schaeffler Technologies AG & Co. KG Fliehkraftpendel

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100200347A1 (en) * 2009-02-09 2010-08-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Oil cavity for pendulum element (roller) of a centrifugal pendulum
FR2986593A1 (fr) * 2012-02-07 2013-08-09 Valeo Embrayages Dispositif d'amortissement pendulaire
DE102012212970A1 (de) 2012-02-28 2013-08-29 Schaeffler Technologies AG & Co. KG Drehmomentübertragungseinrichtung und Antriebsstrang mit Drehmomentübertragungseinrichtung
DE102013213008A1 (de) * 2012-07-06 2014-02-20 Schaeffler Technologies AG & Co. KG Drehschwingungstilger
DE102015205078A1 (de) * 2014-04-09 2015-10-15 Schaeffler Technologies AG & Co. KG Fliehkraftpendelvorrichtung
WO2016008482A1 (fr) * 2014-07-18 2016-01-21 Schaeffler Technologies AG & Co. KG Pendule centrifuge
DE102014221004A1 (de) * 2014-10-16 2016-04-21 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung mit Anschlag
DE102014224812A1 (de) * 2014-12-03 2016-06-09 Schaeffler Technologies AG & Co. KG Fliehkraftpendel
DE102015200766A1 (de) 2015-01-20 2016-07-21 Schaeffler Technologies AG & Co. KG Fliehkraftpendeleinrichtung und Drehschwingungsdämpfer
DE102015201126A1 (de) * 2015-01-23 2016-07-28 Schaeffler Technologies AG & Co. KG Fliehkraftpendel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112211957A (zh) * 2019-07-12 2021-01-12 舍弗勒技术股份两合公司 配属于离心摆的摆质量件的滑动元件的固定结构

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DE112017005660A5 (de) 2019-08-22
DE102017122153A1 (de) 2018-05-17

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