JP5280085B2 - Vehicle drive plate and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of engagement error without needing a post-working, such as cutting-work, etc., when a ring-gear in the outer-circumferential part is formed with rolling-formation in order to reduce the manufacturing cost, etc. <P>SOLUTION: Since an engagement tooth 16 of the ring-gear 12 of a driving plate 10 for vehicle, is provided with a projecting arch surface 50 having about 0.70 mm radius in the rear-side corner part of the front surface side edge surface 40, a pinion 30 is quickly engaged with the ring-gear 12 without causing the engagement error. In this case, the above projecting arch surface 50 is simultaneously roll-formed when the front surface side end surface 40, front-side tooth surface 42 and rear-side tooth surface 44, are integrally roll-formed with a die 74 with tooth, and therefore, the driving plate 10 for vehicle is simply manufactured at a low cost and also, the yield is improved and the manufacturing cost is decreased because of dispensing with the post-working, such as the cutting-work for forming the pin corner, the burr-removal, etc. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vehicle drive plate, and more particularly to a technique for preventing the occurrence of a meshing error without requiring post-processing such as cutting when a ring gear at an outer peripheral portion is formed by rolling.

A ring gear is provided on the outer periphery around the center line O, and a pinion disposed parallel to the center line O is linearly moved in the axial direction while being driven to rotate about the axis, thereby engaging the ring gear. During this time, the vehicle drive plate, which is driven to rotate around the center line O by the pinion, engages with the meshing teeth of the pinion. It is widely used as a device for rotational driving (cranking). The device described in Patent Document 1 is an example, and while the pinion is linearly moved in the axial direction by electromagnetic force, the pinion is rotationally driven at a low speed until the pinion is completely engaged with the ring gear. The engine is started by rotating it.
JP 2003-328912 A

  However, when the engine is started by rotating at a high speed after the pinion is completely engaged with the ring gear in this way, the rotation speed must be switched by a relay or the like, so that the device is not only complicated and expensive, but also the engine is started. There is a possibility that time to do becomes long. On the other hand, if the pinion is rotated at a relatively high speed before meshing with the ring gear, when the meshing tooth of the pinion hits the front side end face of the meshing tooth of the ring gear, there is a risk of causing a meshing error.

  For example, FIG. 7A is a cross-sectional view in which the ring gear 100 of the vehicle drive plate is broken at an intermediate portion in the toothing direction of the meshing tooth 102, and the meshing tooth 106 of the pinion 104 among the meshing teeth 102 enters. The meshing teeth 106 of the pinion 104 are meshed with the meshing teeth of the ring gear 100 at the corners (frontal corners) between the front end face 108 and the front tooth surface 110 positioned on the front side in the rotational direction when being driven to rotate by the pinion 104. A flat inclined surface 112 is provided for guiding between 102. However, as indicated by a solid line in the figure, the corner (rear side angle) between the front end surface 108 of the meshing tooth 102 and the rear tooth surface 114 located on the rear side in the rotation direction when being driven to rotate by the pinion 104. Part) 116 hits the front corner 118 of the meshing tooth 106 of the pinion 104, and if the rear corner 116 has an arc shape, the pinion 104 cannot be rotated as it is and is rebounded. Although it is moved again in the direction of entry by electromagnetic force or the like, the meshing tooth 106 rotates in an arc as shown by an arrow A. Therefore, when the rotation speed is high, the adjacent meshing tooth 102 of the adjacent meshing tooth 102 is shown as shown by a one-dot chain line. There is a case where a meshing error occurs due to contact with the rear corner portion 116 again.

  On the other hand, FIG. 7B shows the case where the rear corner 116 has a substantially right angle, and in this case, the front corner 118 of the meshing tooth 106 of the pinion 104 hits the rear corner 116. Even if it is hardly rebounded, as shown by an arrow A, it rotates in the rotational direction as it is and enters between the next meshing teeth 102, or if it is slightly caught by the rear corner 116, the arrow As shown by B, it rushes and meshes as it is and no meshing error occurs. However, for example, when the ring gear 100 is formed by rolling in order to reduce the manufacturing cost, it is impossible to make the rear corner portion 116 a pin angle as shown in FIG. After rolling forming, it is necessary to make the rear corner portion 116 a pin angle by cutting or the like, which increases the number of processing steps and the yield of the material, and the effect of sufficiently reducing the manufacturing cost is not necessarily obtained.

  The present invention has been made against the background of the above circumstances, and the object of the present invention is to perform post-processing such as cutting when the outer peripheral ring gear is formed by rolling to reduce manufacturing costs. It is to prevent the occurrence of a meshing error without being necessary.

In order to achieve this object, the first invention is as follows. (A) A ring gear is provided on the outer periphery around the center line O, and a pinion arranged in parallel to the center line O is driven to rotate around the axis. While being linearly moved in the axial direction, the meshing teeth of the pinion enter between the meshing teeth of the ring gear and mesh with each other, and are rotationally driven around the center line O by the pinion, and (b) Among the meshing teeth of the ring gear, at least the front side end surface into which the meshing teeth of the pinion enter, the front tooth surface positioned on the front side in the rotational direction when being rotated by the pinion, and the rotationally driven by the pinion The portion having the rear tooth surface located on the rear side in the rotation direction is formed by rolling with an integrally formed toothed die, and (c) the front side end surface and the front side In a vehicle drive plate, a flat inclined surface for guiding the meshing teeth of the pinion between the meshing teeth of the ring gear is provided at the corner with the surface at the same time by rolling molding with the toothed die. (D) A convex arc surface having a radius R1 of 0.65 mm or more and less than 0.95 mm is formed by rolling with the toothed die at the corner portion between the front side end face and the rear side tooth face. It is characterized by being provided simultaneously.

The second invention is the vehicle drive plate according to the first invention, wherein (a) the vehicle drive plate has a rush speed of 250 mm / second or more when the meshing teeth of the pinion rush between the meshing teeth of the ring gear. In the range of 350 mm / second, the rotation speed of the pinion at the time of entry is used in the range of 1000 rpm to 2000 rpm. (B) The inclined surface has an inclination angle φ in the range of 44 ° to 46 °. in inclination range L is in the range of 1.5 mm to 2.5 mm, (c) the convex arcuate surface, the radius R1 is equal to or is in the range of 0.65Mm～0.90Mm.

  According to the third aspect of the invention, (a) a ring gear is provided on the outer periphery around the center line O, and a pinion disposed parallel to the center line O is linearly moved in the axial direction while being rotationally driven around the axis. Thus, the meshing teeth of the pinion enter between the meshing teeth of the ring gear and mesh with each other, and are rotationally driven around the center line O by the pinion, and (b) Of the meshing teeth of the ring gear, At the corner between the front side end face into which the meshing tooth of the pinion enters and the front tooth surface positioned on the front side in the rotation direction when being driven to rotate by the pinion, the meshing tooth of the pinion is fitted to the meshing tooth of the ring gear. (C) at the corner of the front side end surface and the rear tooth surface located on the rear side in the rotation direction when being driven to rotate by the pinion. Half R1 is a method for manufacturing a vehicle drive plate provided with a convex arc surface of 0.65 mm or more and less than 0.95 mm, (d) Of the meshing teeth of the ring gear, the inclined surface and the convex arc A portion having at least the front side end face, the front tooth face, and the rear tooth face including a face is simultaneously formed by rolling with a toothed die integrally formed.

In the vehicle drive plate according to the first aspect of the invention, a convex arc surface having a radius R1 of 0.65 mm or more and less than 0.95 mm is provided at a corner portion (rear corner portion) between the front end face and the rear tooth face. Therefore, according to the experiments by the present inventors, the pinion is quickly meshed with the ring gear without causing a meshing error. In this case, the convex arc surface is formed by rolling simultaneously with the toothed die when the portion having the front side end surface, the front tooth surface, and the rear tooth surface is formed by the toothed die. In addition to being able to manufacture at low cost, the yield is improved, and the manufacturing cost is reduced in combination with the need for post-processing such as cutting and deburring to obtain a pin angle.

  A third invention in which a vehicle drive plate having a radius R1 of 0.65 mm or more and a convex arc surface of less than 0.95 mm provided at the rear corner is formed by rolling with an integrally formed toothed die. In this manufacturing method, substantially the same effect as the first invention can be obtained.

  In the second invention, the inclination angle φ of the inclined surface is in the range of 44 ° to 46 °, the inclination range L is in the range of 1.5 mm to 2.5 mm, and the radius R1 of the convex arc surface is 0.65 mm. If the pinion meshing teeth enter between the meshing teeth of the ring gear, the rotational speed of the pinion is 1000 rpm to 2000 rpm relatively high. According to the experiments by the present inventors, the pinion can be quickly meshed with the ring gear without causing a meshing error, and the engine can be started by quickly rotating the vehicle drive plate at high speed.

  The vehicle drive plate of the present invention has a possibility of coming into contact with a pinion, that is, a portion having at least a front end face, a front tooth face, and a rear tooth face, including an inclined surface and a convex arc surface, among the meshing teeth of the ring gear. It is only necessary that a certain part is formed by rolling with an integrally formed toothed die, and there is no risk of burring or the like in the part that affects the meshing with the pinion, and post-processing such as cutting Is unnecessary. The back side end surface opposite to the front side end surface can be molded by, for example, fixing a separate end face constraining plate or the like to the toothed die with a bolt or the like. It is also possible to roll the entire ring gear including the end face with a single integral toothed die.

Convex arc surfaces having a radius R1 of less than 0.95 mm are formed by rolling at the corners (rear corners) between the front end face and the rear tooth face. According to the above, a meshing error occurred when R1≈0.95 mm, whereas a meshing error did not occur when R1≈0.70 mm and R1≈0.80 mm. Further, the radius R1 of the convex arc surface is 0 . To form the following small arcuate surface 60mm in rolling molding, molding conditions such as rolling pressure is severe, there is a possibility that the durability of the toothed die is impaired, the radius R1 is 0. A range of 65 mm to 0.90 mm is desirable, and a range of 0.65 mm to 0.75 mm is particularly suitable. However, in a geometric sense, it is not necessarily a convex arc surface having a radius R1, and the radius R1 may be slightly changed in the circumferential direction or the longitudinal direction, that is, the corner ridgeline direction, due to manufacturing convenience or the like. . Such roll forming is preferably performed hot.

  The inclined surface is set, for example, within an inclination angle φ of 44 ° to 46 ° and an inclination range L within a range of 1.5 mm to 2.5 mm. It is also possible to set out of these ranges, provided that they do not occur. The rotation speed of the pinion when the meshing teeth of the pinion enter between the meshing teeth of the ring gear is, for example, in the range of 1000 rpm to 2000 rpm, but on the condition that the meshing error does not occur in the implementation of the first invention. It is also possible to set out of this range. Further, the moving speed (rush speed) of the pinion in the axial direction when the meshing teeth of the pinion enter between the meshing teeth of the ring gear is, for example, about 250 mm / second to 350 mm / second.

  The vehicle drive plate of the present invention preferably includes a ring gear and is integrally formed. For example, the outer peripheral portion of a disk-shaped material is thickened by a thickening roller and has a thickness substantially equal to the tooth width of the ring gear. It is manufactured by forming a thick part and rolling the meshing teeth in the thick part. However, the substantially flat plate portion of the vehicle drive plate and the ring gear can be configured separately and can be integrally fixed by fixing means such as welding or bolts, and various modes can be adopted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a vehicle drive plate 10 to which the present invention is applied. The vehicle drive plate 10 has a disk shape centered on a center line O and is provided with a ring gear 12 on the outer periphery. The upper half is shown. As shown in FIG. 4 (a), the vehicle drive plate 10 is integrally formed by using a disk-shaped material 20 made of a metal plate such as a steel plate having a substantially constant plate thickness. ), The thickened portion 14 having a thickness slightly smaller than the width dimension of the ring gear 12 is formed on the outer peripheral portion by applying a thickening process to the outer peripheral portion of the disk-shaped material 20 using a thickening roller. The provided drive plate material 22 is obtained. Thereafter, as shown in (c), the ring gear 12 is formed by rolling the outer peripheral surface of the thick portion 14 and rolling and forming a large number of meshing teeth 16 in the circumferential direction. The vehicle drive plate 10 in which the ring gear 12 is integrally provided on the outer peripheral portion of the inner peripheral plate portion 18 having substantially the same thickness as the plate-like material 20 is obtained. 4A to 4C are cross-sectional views including the center line O, similar to the vehicle drive plate 10 in FIG. 1, and show the upper half of the center line O. FIG.

  As shown in FIG. 1, such a vehicle drive plate 10 has a pinion 30 arranged in parallel with the center line O and is linearly driven in the axial direction while being driven to rotate around the axis by the inrush rotation device 34. By being moved, the meshing teeth 32 of the pinion 30 enter between the meshing teeth 16 of the ring gear 12 and mesh with each other, and are driven to rotate around the center line O by the pinion 30. The vehicle drive plate 10 is integrally fixed to the torque converter via bolts or the like and connected to the crankshaft of the engine. The vehicle drive plate 10 is rotationally driven around the center line O by the pinion 30 to rotationally drive the crankshaft. Then, the engine is started by starting control such as fuel injection. The rush rotation device 34 includes an electric motor that rotationally drives the pinion 30, an electromagnetic solenoid that linearly moves in the axial direction, and the like, and rotationally drives the stopped pinion 30 and simultaneously moves in the axial direction. Thus, the rotational speed of the pinion 30 when meshing with the ring gear 12 is in the range of 1000 rpm to 2000 rpm, and in this embodiment is about 1500 rpm, and the axial entry speed is in the range of 250 mm / sec to 350 mm / sec. Then, it is about 300 mm / sec.

  Here, the meshing teeth 16 of the ring gear 12 of this embodiment are configured as shown in FIG. FIG. 2 (a) is a view showing one meshing tooth 16, and is a perspective view seen from obliquely upward on the front side where the meshing tooth 32 of the pinion 30 is inserted, and FIG. 2 (b) is an IIB in (a). It is sectional drawing cut out by the plane. In these drawings, the meshing teeth 16 are rotated by the front end surface 40 into which the meshing teeth 32 of the pinion 30 enter, the front tooth surface 42 positioned on the front side in the rotational direction and the pinion 30 when being rotated by the pinion 30. A rear tooth surface 44 located on the rear side in the rotation direction when driven, and a rear side end surface 46 opposite to the front side end surface 40 are provided. A flat inclined surface 48 for guiding the meshing tooth 32 of the pinion 30 between the meshing teeth 16 of the ring gear 12 is provided at the corner (front corner) of the front side end surface 40 and the front side tooth surface 42. In addition, a convex arcuate surface 50 having a radius R1 of less than 0.95 mm is provided at a corner portion (rear side corner portion) between the front side end surface 40 and the rear tooth surface 44.

  The inclination angle φ of the inclined surface 48 is in the range of 44 ° to 46 °, and in this embodiment, φ = 45 ° is a target value. The inclination range L of the inclined surface 48 is 1.5 mm to 2 mm. Within the range of 0.5 mm, the present embodiment is molded with a target value of 2.0 mm. Arc edges having a radius of about 1.1 mm are provided at both ends of the inclined surface 48, that is, each ridge line portion that intersects the front tooth surface 42 and the front end surface 40, and is smoothly connected. The inclination range L is the distance to the intersection when the flat inclined surface 48 and the front side end surface 40 are linearly extended in FIG. 2B, that is, the formation of the inclined surface 48 without providing an arc surface. It is a range. In addition, the radius R1 of the convex arcuate surface 50 is formed within the range of 0.65 mm to 0.90 mm in the present embodiment, particularly 0.70 mm so as to be within the range of 0.65 mm to 0.75 mm. Has been.

  And according to the ring gear 12 provided with such a meshing tooth | gear 16, since the convex circular arc surface 50 whose radius R1 is about 0.70 mm is provided in the rear side corner | angular part of the front side end surface 40, this inventor is According to the above experiments, the pinion 30 is quickly meshed with the ring gear 12 without causing a meshing error. FIG. 3 is a cross-sectional view corresponding to (a) and (b) of FIG. 7, and the front corner portion 33 of the meshing tooth 32 of the pinion 30 is formed on the convex arc surface 50 of the rear corner portion as shown by the solid line. Even if it hits, it is slightly rebounded as indicated by arrow A, but is immediately advanced in the direction of entry, and enters the next meshing tooth 16 as indicated by the alternate long and short dash line as it rotates, or convex arcuate surface 50 If there is only a small amount of catch, as shown by the arrow B, it enters and meshes as it is and no meshing error occurs.

FIG. 5 is a cross-sectional view illustrating a configuration of a main part of a rolling molding apparatus 60 that rolls and forms the meshing teeth 16 by rolling the thick-walled portion 14 of the drive plate raw material 22. A rotary clamping device 62 and a rolling die 64 are provided so as to be rotatable around the lines S ₁ and S ₂ . The rotary clamp device 62 clamps the drive plate material 22 from both sides by a pair of mandrels 66 and 68 so as to be held concentrically and at a predetermined rotational speed by a motor (not shown) around the center line S ₁ (O). To rotate. The drive plate material 22 is integrally held in a state where the outer peripheral thick portion 14 protrudes from the mandrels 66 and 68 to the outer peripheral side.

The rolling die 64, together with the molding groove 70 is provided with a shaped tooth 72 corresponding to the engaging teeth 16, the center line a direction perpendicular to the center line S ₂ by a linear drive device (not shown) S _{It is} moved in a straight line direction toward ₁ , that is, in the radial direction of the drive plate material 22, and is brought close to the rotary clamp device 62. The outer peripheral portion of the drive plate material 22 fixed to the rotary clamp device 62 and driven to rotate integrally is inserted into the molding groove 70, and the molding teeth 72 provided in the molding groove 70 are thick portions. becomes in contact with the outer peripheral surface 14, rolling die 64 is caused to around him to around the center line S _2, splines 72 on the thick portion 14 by being brought further closer to the rotational clamping device 62 in this state The meshing teeth 16 are formed by biting and plastic deformation. In addition, by making the rotary clamp device 62 approach the rolling die 64, the thick molding portion 14 of the drive plate material 22 can be formed by rolling.

  FIG. 6 is an enlarged view showing the vicinity of the forming groove 70 of the rolling die 64. The rolling die 64 includes a toothed die 74 on which the forming teeth 72 are formed, a back side end face restraint plate 76, and the like. And the molding groove 70 is formed by the toothed dies 74 and the back side end face restraint plate 76 by being integrally fixed via bolts 78 (see FIG. 5) as fastening means. It is supposed to be formed. That is, the toothed die 74 includes a portion of the meshing teeth 16 of the ring gear 12 that includes the front end surface 40, the front tooth surface 42, and the rear tooth surface 44 including the inclined surface 48 and the convex arc surface 50. In order to mold, a molding surface corresponding to them is integrally provided, and the back side end surface 46 is molded by the back side end surface restraining plate 76. Since the front side end face 40, the front tooth face 42, and the rear tooth face 44 including the inclined face 48 and the convex arc face 50 are formed by rolling with an integral toothed die 74, the portion in contact with the pinion 30 is burred. No post-processing such as deburring is required, and the vehicle drive plate 10 having the meshing teeth 16 can be manufactured easily and inexpensively.

  As described above, the vehicle drive plate 10 according to the present embodiment has the convex arc surface 50 having the radius R1 of about 0.70 mm at the rear corner of the front side end surface 40, and therefore generates a meshing error. The pinion 30 is quickly meshed with the ring gear 12. In this case, the convex arcuate surface 50 is formed by rolling simultaneously with the front side end surface 40, the front side tooth surface 42, and the rear side tooth surface 44 by the integral toothed die 74. The drive plate 10 can be manufactured easily and inexpensively, the yield is improved, and the manufacturing cost is reduced in combination with the need for post-processing such as cutting and deburring to obtain a pin angle.

  In particular, in this embodiment, the inclination angle φ of the inclined surface 48 is about 45 °, the inclination range L is about 2.0 mm, and the radius R1 of the convex arc surface 50 is about 0.70 mm. When the meshing tooth 32 enters between the meshing teeth 16 of the ring gear 12, even if the pinion 30 rotates at a high speed of about 1500 rpm and the rushing speed is a high speed of about 300 mm / sec, a meshing error occurs. Without this, the pinion 30 can be quickly meshed with the ring gear 12, and the vehicle drive plate 10 can be quickly rotated at high speed to start the engine.

  As mentioned above, although the Example of this invention was described in detail based on drawing, this is an embodiment to the last, and this invention is implemented in the aspect which added various change and improvement based on the knowledge of those skilled in the art. Can do.

It is sectional drawing explaining the drive plate for vehicles which is one Example of this invention, and is a figure explaining the positional relationship with a pinion collectively. FIGS. 2A and 2B are diagrams for explaining meshing teeth of a ring gear of the vehicle drive plate of FIG. 1, in which FIG. 1A is a perspective view, and FIG. FIG. 2 is a cross-sectional view illustrating meshing of a ring gear and a pinion of the vehicle drive plate of FIG. 1. It is sectional drawing explaining the manufacturing process of the drive plate for vehicles of FIG. FIG. 5 is a cross-sectional view illustrating a rolling forming apparatus that performs rolling processing on the drive plate material shown in FIG. 4B to roll form the vehicle drive plate shown in FIG. 4C. It is sectional drawing which expands and shows the shaping | molding groove vicinity of the rolling die of the rolling shaping | molding apparatus of FIG. FIG. 4 is a cross-sectional view for explaining the meshing between a ring gear and a pinion of a conventional vehicle drive plate, corresponding to FIG. 3, wherein (a) is a case where a meshing error occurs due to a large radius at the front rear corner. (b) is the case where the front rear corner has a substantially pin angle.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10: Drive plate for vehicles 12: Ring gear 16: Engagement tooth 30: Pinion 32: Engagement tooth 40: Front side end surface 42: Front side tooth surface 44: Rear side tooth surface 48: Inclined surface 50: Convex arc surface 60: Rolling molding Device 74: Toothed die

Claims (3)

A ring gear is provided on the outer periphery around the center line O, and a pinion disposed parallel to the center line O is linearly moved in the axial direction while being rotationally driven around the axis, whereby the meshing teeth of the ring gear And the meshing teeth of the pinion enter and mesh with each other, and are rotated around the center line O by the pinion,
Among the meshing teeth of the ring gear, at least the front side end surface into which the meshing teeth of the pinion enter, the front side tooth surface positioned on the front side in the rotation direction when being driven to rotate by the pinion, and when being rotated by the pinion The portion having the rear tooth surface located on the rear side in the rotation direction is formed by rolling with a toothed die integrally formed,
A flat inclined surface for guiding the meshing teeth of the pinion between the meshing teeth of the ring gear is provided at the corners of the front side end surface and the front side tooth surface simultaneously by rolling with the toothed die. Drive plate for a vehicle,
Convex arc surfaces having a radius R1 of 0.65 mm or more and less than 0.95 mm are simultaneously provided at the corners of the front side end face and the rear side tooth face by rolling with the toothed die. A vehicle drive plate characterized by The vehicle drive plate has a rush speed when the meshing teeth of the pinion enter between the meshing teeth of the ring gear within a range of 250 mm / sec to 350 mm / sec, and the rotational speed of the pinion at the time of rushing is Used within the range of 1000 rpm to 2000 rpm,
The inclined surface has an inclination angle φ in the range of 44 ° to 46 °, an inclination range L in the range of 1.5 mm to 2.5 mm,
The convex circular arc surface, the vehicle drive plate according to claim 1, radius R1 is equal to or is in the range of 0.65Mm～0.90Mm. A ring gear is provided on the outer periphery around the center line O, and a pinion disposed parallel to the center line O is linearly moved in the axial direction while being rotationally driven around the axis, whereby the meshing teeth of the ring gear And the meshing teeth of the pinion enter and mesh with each other, and are rotated around the center line O by the pinion,
Of the meshing teeth of the ring gear, the corners of the front side end surface into which the meshing teeth of the pinion enter and the front side tooth surface positioned on the front side in the rotational direction when being rotated by the pinion are provided at the corners of the pinion. A flat inclined surface is provided for guiding the meshing teeth between the meshing teeth of the ring gear;
Convex arcs having a radius R1 of 0.65 mm or more and less than 0.95 mm at corners of the front side end surface and the rear tooth surface located on the rear side in the rotation direction when being driven to rotate by the pinion A method of manufacturing a vehicle drive plate provided with a surface,
Of the meshing teeth of the ring gear, a portion having at least the front side end surface, the front side tooth surface, and the rear side tooth surface including the inclined surface and the convex arc surface is integrally formed with a toothed die. A method for manufacturing a drive plate for a vehicle, wherein the rolling forming is performed simultaneously.

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