DE102019121367A1 - Coupling and method of making such a coupling - Google Patents

Abstract

The invention relates to a clutch (10) for a drive train of a motor vehicle and a method for producing such a clutch (10), the clutch (10) having a first side (15) rotatably mounted about an axis of rotation (30) and a switchable with the first side (15) having a second side (20) that can be connected in a torque-locking manner, the first side (15) being connectable to a drive motor and the second side (20) non-rotatably connected to a transmission device of the drive train, with at least one of the two sides (15, 20 ) has a flange part (95) and a toothed part (100), the toothed part (100) having a toothing (120) on a peripheral side (116) and a peripheral side (131) with the flange part (95) on a peripheral side (131) opposite the toothing (120) connected is.

Description

The invention relates to a coupling and a method for producing such a coupling.

Out DE 10 2016 217 385 A1 a double clutch and a method for assembling such a double clutch are known.

It is an object of the invention to provide an improved coupling and an improved method of manufacturing such a coupling.

This object is achieved by means of a coupling according to claim 1 and a method according to claim 4. Advantageous embodiments are specified in the dependent claims.

It has been recognized that an improved clutch for a drive train of a motor vehicle can be provided in that the clutch has a first side rotatably mounted about an axis of rotation and a second side that can be connected to the first side in a torque-locking manner, the first side having a drive motor and the second side can be connected non-rotatably to a transmission device of the drive train, at least one of the two sides having a flange part and a toothing part, the toothing part being connected to a toothing on a peripheral side and a further peripheral side opposite the toothing being connected to the flange part.

Due to the two-part design of the side, in particular the input side of the clutch, the side can be produced particularly easily and inexpensively. In particular, for example, the toothed part can be produced in a different and separate production process than the flange part. A pressing process, a sintering process, a casting or forging process are particularly suitable for producing the toothed part, while a deep-drawing process and / or a stamping-bending process are particularly suitable for producing the flange part.

In a further embodiment, the toothed part is connected to the flange part by means of a welded connection, the welded connection preferably being designed circumferentially or interrupted in the circumferential direction, so that reliable torque transmission between the flange part and the toothed part is ensured. In particular, this ensures that the drive torque can be transmitted reliably. The connection can be made, for example, by means of a welding process, in particular a laser welding process.

In a further embodiment, a stop surface for limiting an insertion depth is molded into the toothing part on the end face in at least one tooth of the toothing.

The coupling can be produced in a particularly simple manner in that the flange part is formed from a plate-shaped first blank. The flange part is advantageously forged, sintered and / or cast. Furthermore, the toothing part is formed, the toothing being stamped into an elongated semifinished product in particular to form the toothing part and the semifinished product being formed into a ring, the toothing part being arranged on the flange part and being bonded to the flange part. The two-part design makes it possible to choose different manufacturing processes and to manufacture the side, in particular the input side, particularly inexpensively.

• 1 einen perspektivischen Teilschnitt durch eine Kupplung;
• 2 eine perspektivische Ansicht des Flanschteils;
• 3 eine perspektivische Darstellung einer ersten Seite der in 1 gezeigten Kupplung;
• 4 einen Halblängsschnitt durch die erste Seite der in 1 gezeigten Kupplung;
• 5 einen Ausschnitt einer Abwicklung eines Verzahnungsteils der in den 1 bis 4 gezeigten ersten Seite;
• 6 einen Ausschnitt der in 5 gezeigten Abwicklung des Verzahnungsteils;
• 7 ein Ablaufdiagramm eines Verfahrens zur Herstellung der ersten Seite;
• 8 eine schematische Darstellung des Verzahnungsteils während eines zweiten Verfahrensschritts;
• 9 eine perspektivische Darstellung des Verzahnungsteils nach einem vierten Verfahrensschritt;
• 10 eine perspektivische Darstellung des Verzahnungsteils nach einem sechsten Verfahrensschritt;
• 11 das Verzahnungsteil während eines siebten Verfahrensschritts;
• 12 das Verzahnungsteil nach dem siebten Verfahrensschritt;
• 13 eine perspektivische Darstellung des Verzahnungsteils während eines achten Verfahrensschritts;
• 14 das Verzahnungsteil nach dem achten Verfahrensschritt.

The invention is explained in more detail below with reference to figures. Show:

• 1 a perspective partial section through a coupling;
• 2 a perspective view of the flange part;
• 3 a perspective view of a first side of the FIG 1 clutch shown;
• 4th a half longitudinal section through the first side of the in 1 clutch shown;
• 5 a section of a development of a toothed part in the 1 to 4th first page shown;
• 6th a section of the in 5 shown development of the toothed part;
• 7th a flow chart of a method for producing the first page;
• 8th a schematic representation of the toothed part during a second method step;
• 9 a perspective view of the toothed part after a fourth method step;
• 10 a perspective view of the toothed part after a sixth method step;
• 11 the toothed part during a seventh method step;
• 12 the toothed part after the seventh process step;
• 13 a perspective view of the toothed part during an eighth method step;
• 14th the toothed part after the eighth process step.

1 shows a perspective partial section through a coupling 10 .

The coupling 10 is exemplary in 1 designed as a double clutch, particularly advantageously designed as a multi-plate clutch. The coupling 10 can for example as in DE 10 2016 217 385 A1 be designed as described. Another embodiment of the coupling 10 is of course conceivable.

The coupling 10 assigns one as the first page 15th formed input side and at least one second side 20th on. The second side 20th is designed as the first output side. In addition, the clutch 10 a second exit page 25th exhibit. The first page 15th is rotatable about an axis of rotation 30th stored.

The first page 15th can for example be connected to a drive motor of a drive train, for example an internal combustion engine, of a motor vehicle in a torque-locking manner. In the second page 20th For example, a first transmission input shaft of a transmission device of the drive train and into the second output side 25th a second transmission input shaft of the transmission device of the drive train can intervene.

The coupling 10 has, for example, a first coupling unit 35 and a first operating unit 40 and a second coupling unit 45 and a second operating unit 50 on. The first coupling unit 35 is torque-locked via a housing 55 the clutch 10 with the first page 15th connected. The first page 15th to the housing 55 be flanged. The first coupling unit 35 is radially outside of the second coupling unit 45 arranged.

The first coupling unit 35 has a first friction package 60 on, the first actuation unit 40 switchable a first actuating force F _B1 provides to the first friction package 60 to press. When pressing with the first actuation force F _B1 and one through the case 55 provided first drag F _G1 a first frictional connection is formed in the first friction package 60 off, the first friction package 60 via a first inner disc carrier 65 the first coupling unit 35 torque locking with the second side 20th connected is. Becomes the first actuation force F _B1 and the counteracting first counterforce F _G1 is provided via the housing 55 the first page 55 switchable via the first inner plate carrier 65 with the second side 20th connected.

A driver part running essentially in the radial direction 75 connects a first outer disk carrier 80 the first coupling unit 35 , which rotates with the housing 55 is connected and the first friction package 60 carries, with a second outer disc carrier 90 the second coupling unit 45 . The second outer plate carrier 90 carries together with a second inner disc carrier 85 the second coupling unit 45 the second friction package 70 . The second inner plate carrier 85 is with the second exit side 25th connected.

The second exit page is analogous to this 25th switchable by means of the second coupling unit 45 with the first page 15th connectable. This is done by the second actuation unit 50 a second actuation force F _{S2 is} provided, the second actuation force F _S2 and a second counterforce acting against the second actuation force F _S2 F _G2 the second friction package 70 the second coupling unit 45 is pressed and forms a frictional connection, the torque-locking the input side 15th with the second exit side 25th connects.

In the embodiment, the first and second operating units are 40 , 50 for example, designed as a central clutch release, also referred to as CSC (central symmetric cylinder).

The first page 15th is designed in several parts and has a flange part 95 and a toothed part 100 on. The toothed part 100 is with the flange part 95 non-rotatably connected. The flange part 95 is non-rotatable with the housing 55 connected and can for example with the housing 55 be riveted or welded.

2 Figure 3 shows a perspective view of the flange part 95 .

The flange part 95 is bell-shaped or cup-shaped. The flange part 95 lies with the radial section extending in the radial direction from the inside to the outside 105 on the back on one housing face 106 of the housing 55 at. Furthermore, the flange part 95 an axial section 110 on, the axial section 110 radially outside with the radial section 105 connected is. The axial section 110 extends substantially parallel to the axis of rotation 30th . The flange part is preferably 95 in one piece and made of the same material, for example in a deep-drawing process.

3 shows a perspective view of the first page 15th .

The axial section 110 has a first inner peripheral side 115 on, with the first inner peripheral side 115 on a circular path around the axis of rotation 30th is led. The toothed part is located radially on the inside 100 on the first inner peripheral side 115 with an outer peripheral side 131 on the axial section 110 at.

The toothed part 100 points on a second inner peripheral side 116 an internal toothing 120 on. In the internal toothing 120 For example, a crankshaft or an output side of a dual mass flywheel can intervene. This will be the first page 15th Torque connected to the internal combustion engine of the drive train.

4th shows a half longitudinal section through the first side 15th .

The toothed part 100 is cohesive, preferably by means of a first weld seam 125 and by means of a second weld seam 130 connected. The welds 125 , 130 are designed without interruption in the circumferential direction. Also can the weld 125 , 130 be formed interrupted. The welds 125 , 130 can be produced using laser beam welding.

The first weld 125 connects the outer circumferential side 131 with the first inner peripheral side 115 . The first weld 125 is on one of the radial section 105 facing away from the axial side of the toothed part 100 arranged.

The second weld 130 connects the toothed part at the front 100 with the radial section 105 . Both welds 125 , 130 can be designed as fillet welds.

The internal gearing 120 has an example of a spline profile. Another embodiment of the internal toothing 120 is conceivable.

5 shows a section of a development of the toothed part 100 .

The internal gearing 120 has an example of a first tooth 135 with a first outer contour and at least one second tooth 140 with a second outer contour. The first outer contour of the first tooth 135 is different from the second outer contour of the second tooth 140 . In particular, the first tooth 135 be made larger in the radial direction than the second tooth 140 .

In addition, the first tooth has 135 a stop surface at the front 145 on. The stop surface 145 extends in a plane of rotation perpendicular to the axis of rotation 30th . The stop surface 145 is opposite a first end face 150 of the first tooth 135 set back in the axial direction. A second face 155 of the second tooth 140 is arranged in the same plane of rotation as the first face 150 . The front sides 150 , 155 the teeth 135 , 140 can be wedge-shaped.

Due to the different outer contours of the first and second tooth 135 , 140 can be an orientation of the first page 15th and the one in the first page 15th engaging output side of the internal combustion engine are aligned defined in the circumferential direction. In the embodiment, for example, is between two first teeth 135 the second tooth 140 arranged, with only in a partial area of the internal toothing 120 the first teeth 135 are provided.

6th shows a section of the in 5 shown development of the toothed part 100 .

The stop surface 145 is opposite the first and second face 150 , 155 arranged offset in the axial direction. By striking the output side of the internal combustion engine against the stop surface 145 becomes an insertion depth in the internal toothing 120 defined set.

7th FIG. 11 shows a flow chart of a method for producing the first page 15th . 8th shows a schematic representation of the toothed part 100 during a third process step 210 . 9 shows a perspective view of the toothed part 100 after a fourth process step 215 . 10 shows a perspective view of the toothed part 100 after a sixth process step 225 . 11 shows the toothed part 100 during a seventh process step 230 and 12 shows the toothed part 100 after the seventh process step 230 . 13 shows a perspective view of the toothed part 100 during an eighth process step 235 . 14th shows the toothed part 100 after the eighth process step 235 .

In a first process step 200 For example, the flange part is made from a first plate-shaped blank in a deep-drawing process 95 manufactured. Also an alternative different manufacturing method for manufacturing the flange part 95 , for example a casting process, a sintering process, a forging process or a stamping-bending process would be conceivable.

In a second process step 205 , which runs parallel to or before the first process step 200 is executed, a semi-finished product is used as a second blank 160 , which has a full profile with, for example, a circular cross-section, between one in 8th stamp arranged on top 165 and a die 181 arranged.

The Stamp 165 points at a bottom 170 a toothing 175 that can have a spline profile. The die 181 has a flat top 180 on. On the top 180 is the second blank 160 on. In addition, a delimitation element 185 be provided laterally to the second blank 160 at a predefined distance a at the die 181 is arranged.

In the third step 210 becomes an embossing force F _P in the stamp 165 initiated, the stamp 165 the gearing 175 into the second blank 160 impressed on the top. The die 181 provides a third counterforce F _G3 , which acts in the opposite direction to the embossing force F _P. The second blank will move to the side 160 by striking the delimiting element 185 , which is exemplified L-shaped, limited. The second blank bulges on the side during embossing 160 out. The bottom is through the top 180 the die 181 the second blank 160 shaped flat so that the second blank 160 is flattened on the underside.

In one to the third process step 210 following fourth process step 215 becomes the embossed second blank 160 taken.

In a fifth process step 220 gets excess material from the second blank 160 , for example by means of a stamping process. Thereby ends 190 , 195 of the toothed part 100 designed to correspond to one another, so that one end 190 to engage the other end 195 is trained.

In the sixth step 225 that will be after the fifth process step 220 present rectilinear toothed part extending essentially in one plane 100 curved or bent, the curvature taking place in such a way that one end 190 in the other end 195 intervenes. This will be one end 190 with the other end 195 optionally additionally welded, in particular laser welded.

After the sixth step 225 is the toothed part 100 essentially ring-shaped. In addition, in a seventh process step 230 straightening also take place (for example in the circumferential direction and / or in the axial direction) so that the toothed part 100 has essentially no imbalance and is essentially circular around the axis of rotation 30th runs.

In one to the seventh process step 230 following eighth procedural step 235 can be on the outer peripheral side 196 for the training of advanced training in the 1 to 6th toothed part shown 100 at least a first ring 197 , preferably a second ring 198 be positioned. The Rings 197 , 198 can be stamped or ready-forged. In an eighth process step 235 the Rings 197 , 198 on the outer peripheral side 196 pressed on. On the eighth process step 235 can also be dispensed with. Will go to the eighth step 235 omitted, so is the toothed part 95 like in the 1 to 6th is trained.

In one to the eighth process step 235 following ninth process step 240 becomes the gear part 100 inside of the axial section 110 arranged. The toothed part 100 in the axial section 110 be pressed in.

In one step on the ninth 240 following tenth process step 245 becomes the gear part 100 with the flange part 95 by means of the two welds 125 , 130 welded, preferably laser welded.

The configuration of the first page described above 15th or the in 7th The method described has the advantage that additional machining methods, which are particularly cost-intensive, can be dispensed with. Alternatively, it is also conceivable that for the in 7th described method the toothed part 100 is manufactured by means of a sintering process or a casting process or a forging process.

List of reference symbols

10

coupling

15th

first page (start page)

20th

second page (first exit page)

25th

second output side (of the clutch)

30th

Axis of rotation

35

first coupling unit

40

first actuation unit

45

second coupling unit

50

second actuation unit

55

casing

60

first friction package

65

first inner disc carrier

70

second friction package

75

Driver part

80

first outer disc carrier

85

second inner plate carrier

90

second outer plate carrier

95

Flange part

100

Toothed part

105

Radial section

106

Housing face

110

Axial section

115

first inner circumferential side

116

second inner peripheral side

120

Internal gearing

125

first weld

130

second weld

131

outer peripheral side

135

first tooth

140

second tooth

145

Stop surface

150

first face

155

second face

160

second blank, semi-finished product

165

stamp

170

bottom

175

Interlocking

180

Top

181

die

185

Delimiting element

190

End of the toothed part

195

other end (of the toothed part)

196

outer circumferential side (of the toothed part)

197

first ring

198

second ring

200

first procedural step

205

second process step

210

third process step

215

fourth procedural step

220

fifth procedural step

225

sixth process step

230

seventh procedural step

235

eighth procedural step

240

ninth process step

245

tenth procedural step

F _B1

first actuation force

F _B2

second actuation force

F _B3

third actuation force

F _G1

first counterforce

F _G2

second counterforce

Fp

Stamping power

a

predefined distance

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102016217385 A1 [0002, 0012]

Claims (4)

Coupling (10) for a drive train of a motor vehicle, having a first side (15) rotatably mounted about an axis of rotation (30) and a second side (20) which can be connected to the first side (15) in a torque-locking manner, wherein the first side (15) can be connected non-rotatably to a drive motor and the second side (20) to a transmission device of the drive train, wherein at least one of the two sides (15, 20) has a flange part (95) and a toothed part (100), wherein the toothing part (100) is connected to a toothing (120) on a peripheral side (116) and to the flange part (95) on a peripheral side (131) opposite the toothing (120). Coupling (10) Claim 1 , wherein the toothed part (100) is connected to the flange part (95) by means of a welded connection, the welded connection preferably being designed to be circumferential in the circumferential direction or interrupted in the circumferential direction. Coupling (10) according to one of the preceding claims, wherein a stop surface (145) for limiting an insertion depth in the toothing part (100) is molded into at least one tooth (135) of the toothing (120) on the front side. Method for producing a coupling (10) according to one of the preceding claims, wherein the flange part (95) is formed from a plate-shaped first blank, wherein the toothed part (100) is formed, In particular, to form the toothed part (100) in an elongated semifinished product (160), the toothing (120) is embossed and the semifinished product (160) is formed into a ring (197, 198), wherein the toothed part (100) is arranged on the flange part (95) and is firmly connected to the flange part (95).

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