JP2668038B2 - Manufacturing method of multi-plate clutch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a process for producing a multi-plate clutch.

[0002]

2. Description of the Related Art Conventionally, a drive side power is transmitted to or released from a passive side by pressing or releasing a superposed clutch plate in which a plurality of drive side clutch plates and passive side clutch plates are alternately stacked. The multi-plate clutch is used as a clutch mechanism for an automatic transmission of a vehicle.

FIG. 12 shows a part of such a multi-plate clutch mechanism for an automatic transmission. A drive-side clutch plate 2a connected to a clutch retainer (clutch drum) 1 is shown in FIG.
And the passive clutch plate 2b connected to the clutch hub 3 side
2. A clutch plate 2 formed by alternately stacking a plurality of sheets
Is incorporated into the clutch retainer 1 together with the piston 4, and when the piston 4 presses the overlapped clutch plate 2 by the hydraulic pressure applied to the piston 4, the clutch plates 2a, 2
When the piston 4 is released, the clutch plates 2a and 2b are separated from each other to be in a released state. Is released.

By the way, as shown in FIG. 13, for example, as shown in FIG. 13, the assembly of the overlapped clutch plate 2 to the clutch retainer 1 is performed by forming the valley portion 5b from the outer surface of the spline groove 5 projecting inward of the clutch retainer 1. A snap ring 7 is fitted into the fitting groove 6 provided inside along the inner circumference of the clutch retainer 1, and the outer end surface 2c of the overlapped clutch plate 2 is engaged with the snap ring 7 as shown in FIG. Stopped and assembled.

The clutch plates 2a and 2b of the overlapped clutch plate 2 are pressed against and separated from each other, so that they reciprocate in the stacking direction, so that the overlapped thickness when pressed and the overlapped thickness when separated. In a state where this difference in thickness is secured as an end play A in the thickness direction of the overlapped clutch plate 2, the overlapped clutch plate 2 is locked to the snap ring 7 and assembled to the clutch retainer 1. It is what is being done.

In FIGS. 12 and 13, 5a is a peak of the spline groove 5, 8 is a drive shaft, 9 is a spring support piece, 10 is a return spring, and 11 is a working fluid supply path.

[0007]

However, since the snap ring is necessary for assembling the overlapped clutch plate using the snap ring as described above, the snap ring is necessary, so that the number of parts is increased and the snap ring is not used. Since it is necessary to provide a fitting groove for fitting, the structure of the multi-plate clutch becomes complicated, for example, the number of processing steps increases, the manufacturing process becomes complicated, and the fitting groove having a width of about 3 mm is formed in the clutch retainer. There is a problem that the clutch retainer becomes longer in the width direction by the amount provided, and the multi-plate clutch becomes larger accordingly.

[0008] When manufacturing a multi-plate clutch in which the overlapping clutch plate is locked by using a snap ring, a thickness error in the already determined position of the fitting groove is set in the assembly process of the overlapping clutch plate. In order to accurately position and assemble a certain overlapped clutch plate so as to secure a fine end play of about 1 mm or less, a large number of snap rings with different thicknesses of more than ten kinds are prepared. While measuring the end play of the superposed clutch plate during assembly for each product from inside,
It requires a very skillful and difficult operation of assembling while selecting a snap ring suitable for securing the desired end play, thereby making the assembly operation extremely complicated and difficult and time consuming. However, there is a problem in that the improvement of production efficiency is hindered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a multi-plate is provided by using a part of a clutch retainer to lock and assemble a superposed clutch plate without using a snap ring. While simplifying and miniaturizing the structure of the clutch, simplifying and simplifying its manufacturing process,
Moreover, it is a multi-plate cracker that allows the assembly process to be automated.
It is an object of the present invention to provide a method for manufacturing a switch .

[0010]

Therefore, in the method for manufacturing a multi-plate clutch according to the present invention as set forth in claim 1, a multi-plate configured by incorporating a piston and a superposed clutch plate composed of a plurality of plates in the clutch retainer. In the method of manufacturing a clutch, the piston and the plurality of pistons are placed in the clutch retainer .
And the piston is assembled together with the piston.
After pushing up the polymerized clutch plate to the die and applying it to the die,
The clutch retainer and the polymerized clutch plate are
Move it back to the position where the end play of the
Formed between the clutch retainer and the piston
Supplying working fluid to the working fluid chamber
Push the polymerization clutch plate together with the piston to
By hitting the die,
After performing the positioning, the polymerization cladding is performed by a punch blade.
The outer peripheral wall corresponding to the positioning portion on the
To form a protrusion, and the protrusion causes the polymerization
It is characterized in that the latch plate is assembled so as to be locked .

Further, in the method for manufacturing a multi-plate clutch according to the present invention, the punch blade contacts the clutch retainer.
To the working fluid chamber at or near the barrel position
By increasing the supply fluid pressure of the
By further increasing the force of bringing the plate into contact with the lower surface of the die,
It is characterized in that the overlapped clutch plate is more strongly clamped in the vertical direction .

[0012]

[0013]

In the multi-disc clutch according to the present invention as set forth in claim 1 ,
In the manufacturing method , the piston and the piston are installed in the clutch retainer.
And the piston clutch plate, which is composed of a plurality of sheets,
Push the polymerized clutch plate together with the
After that, the clutch retainer and the overlapping clutch plate are
Move to the position where the end play of the overlapped clutch plate is added.
After retreating, the clutch retainer and the piston
Supplying the working fluid to the working fluid chamber formed between the
Again pushes the overlapped clutch plate together with the piston.
The polymerized clutch is lifted up and applied to the die.
After positioning the plate, use a punch blade
Outer periphery corresponding to the positioning portion of the overlapped clutch plate
The wall protrudes inward to form a protrusion, and the protrusion
The assembly clutch plate so as to lock it.
Is manufactured by using the clutch retainer
The mounting position to the end of the overlapped clutch plate
Easy to do by machine work with accurate securing
Can be.

Further, in the method for manufacturing a multi-plate clutch according to the second aspect of the present invention, the punch blade may be the clutch retainer.
At or near the
By increasing the supply fluid pressure to the fluid chamber, the polymerization
Stronger force to contact the clutch plate with the lower surface of the die
And clamp the overlapping clutch plate more strongly in the vertical direction.
You.

[0015]

[0016]

EXAMPLES In the following, the drawings and will be described an embodiment of the present invention, FIGS. 1 to 11 shows a multi-plate clutch and a manufacturing method thereof according to the present invention, FIG. 1 in the manufacturing process
Longitudinal sectional view showing a multi-plate clutch which is formed Te, 2-5
6A and 6B are sectional views showing the manufacturing process thereof, FIGS. 6A and 6B are sectional views showing the process of forming the protrusions as seen from the stacking direction of the stacking clutch plate, and FIG. FIG. 9 is a perspective view showing another example of the protruding portion, and FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 9, and FIGS. The same reference numerals indicate substantially similar parts.

First, the structure of the multi-disc clutch will be described. FIG. 1 is a cross-sectional view showing only the multi-disc clutch portion of the multi-disc clutch mechanism for an automatic transmission.
Reference numeral 1 is a clutch retainer that forms a clutch drum of a multi-plate clutch. The overall shape of the clutch retainer 1 is an insertion hole 1 through which a drive shaft 8 shown in FIG.
a is provided, and is formed in a substantially empty disk shape. A circumferential groove 1b is formed in a peripheral part of the circumference, and the piston 4 and the overlapping clutch plate 2 are formed in the circular groove 1b. Is to be stored.

In the inner part (bottom part) of the annular groove 1b,
First, the return spring 1 is interposed between the piston 4 and the spring support piece 9 fixed to the shaft of the clutch retainer 1.
Through 0 are contained by being pressed by the rear direction, the piston 4 and the working fluid chamber 11a formed between the clutch retainer 1 (FIGS. 3 to 5 references) to the working fluid (hydraulic oil, working air etc. ) Is supplied between the piston 4 and the clutch retainer 1.

Further, the annular groove 1b accommodates the overlapping clutch plate 2 corresponding to the outer peripheral portion 4a of the piston 4 from the outside of the piston 4, and the overlapping clutch plate 2 has a drive hole having a round hole at the center. The disk-shaped clutch plate 2a on the side and the disk-shaped clutch plate 2b on the passive side, which also has a slightly smaller diameter and also has a slightly smaller diameter, are alternately stacked one by one and stacked on each other to form one polymer. .

When a pressure such as hydraulic pressure is applied to the working fluid chamber 11a between the piston 4 and the clutch retainer 1 and the piston 4 is pushed outward, the overlapped clutch plate 2 is pushed by the piston 4. When the pressure is applied to the drive side clutch plate 2a and the passive side clutch plate 2b and the pressure of the piston 4 is released and the return spring 10 pushes the piston 4 back, the drive side clutch plate 2a The drive transmission is released by being separated from the passive clutch plate 2b.

Therefore, the overlapped thickness of the overlapped clutch plate 2 is different between the pressed state and the released state. Thick end play A
At the position where is added, the outer peripheral wall 1c of the clutch retainer 1 is protruded inward to form a protruding portion 12, and the protruding portion 12 locks the edge of the outer end surface 2c of the superimposed clutch plate 2 to perform superposition. The clutch plate 2 is assembled to the clutch retainer 1.

A clutch plate 2a on each drive side of the overlapped clutch plate 2 is provided with a clutch retainer (clutch drum) 1
The engagement between the spline groove 5 on the clutch retainer 1 side and the concave / convex teeth 13 on the outer peripheral edge of the clutch plate 2a (2d) by being fixed in the rotational direction and slidable in the axial direction (FIGS. 6, 7). On the other hand, each passive clutch plate 2b is fixed in the rotational direction to the not-shown uneven teeth on the inner peripheral edge and the spline grooves (not shown) of the clutch hub so as to be slidable in the axial direction. (See FIG. 12)
It is connected to the clutch hub 3.

Therefore, the above-mentioned protruding portion 12 is the mountain portion 5a of the spline groove 5 of the outer peripheral wall 1c of the clutch retainer 1.
Or, it is to be provided in the valley 5b,
In the present multi-plate clutch, as shown in FIG. 8, by projecting inwardly a ridge 5a from the outer peripheral surface side of the spline groove 5 of the clutch retainer 1 to form a projection 12, as shown in FIG. The overlapping clutch plate 2 is assembled to the clutch retainer 1 by locking the convex teeth of the concave and convex teeth 13 of the clutch plate 2a on the driving side.

Further, in this case, as shown in FIG. 8, the protrusion 12 is formed on the mountain portion 5a so that the clutch retainer 1 is formed.
1 may be protruded as shown in the embodiment of FIG. 1, or as shown in FIGS. 9 and 11, may be protruded at a position slightly entering from the outer edge of the clutch retainer 1. Further, as shown in FIG. 10, the outer edge portion of the clutch retainer 1 may be bent inward and projected.

As described above, in the present multi-plate clutch, the outer end surface of the overlapping clutch plate 2 is attached to the outer peripheral portion 1c of the clutch retainer 1.
Is locked by a protruding portion 12 projecting inward at a position where the end play A of the overlapped clutch plate 2 is added, so that the overlapped clutch plate 2 is assembled into the clutch retainer 1 as in the conventional case. The superposed clutch plate 2 can be assembled without using the snap ring 7.

Therefore, the snap ring 7 is not required, and the fitting groove 6 for fitting and inserting the snap ring 7 does not need to be provided in the clutch retainer 1, thereby simplifying the construction of the multi-plate clutch and manufacturing it. In addition, the width of the clutch retainer 1 can be shortened by the amount that the fitting insertion groove 6 (see FIG. 13) is not provided, and the multi-plate clutch can be downsized.

Further, in the present multi-plate clutch, the projecting portion 12 for locking the overlapped clutch plate 2 is formed on the peak 5a from the outer peripheral surface side of the spline groove 5 of the clutch retainer 1, so that the conventional multi-disc clutch has the conventional structure. Compared with forming the fitting groove 6 in the valley 5b by working from the inside of the clutch retainer 1,
There is an effect that work can be performed from the outside and work on the work is easy.

Next, a method for manufacturing the multi-plate clutch will be described. First, as shown in FIG. 2, in a first step, the piston 4 and the overlapping clutch plate 2 are inserted into the annular groove 1b in a state where the clutch retainer 1 is turned sideways and the annular groove 1b is turned upward.
The clutch single plates 2a and 2b constituting the
The inner end face of the overlapped clutch plate 2 corresponds to the step 1 d of the clutch retainer 1, and the bottom of the piston 4 contacts the inner part of the clutch retainer 1, so that the outer peripheral portion 4 a of the piston 4 and the inner end face of the overlapped clutch plate 2 are separated. Store as corresponding.

At this time, the piston 4 is inserted between the spring support piece 9 and the spring support piece 9 via a return spring 10 so as to be pushed down, and between the lower surface of the piston 4 and the clutch retainer 1, A working fluid supply passage 11 that supplies the working fluid in communication with the drive shaft insertion hole 1a of the clutch retainer 1 is formed. Then, as shown in FIG. 3, in the second step, the clutch retainer 1 in which the piston 4 and the overlapped clutch plate 2 are inserted (the clutch retainer 1 in which the piston 4 and the overlapped clutch plate 2 are inserted is thereafter used as necessary). Work B) is placed and fixed on a rotatable and vertically slidable pedestal 20 of the present manufacturing apparatus, and one or several pressurizing passages 20a of the pedestal 20 are connected to the working fluid on the lower surface of the piston 4. The connection is made with the supply path 11.

[0030] Note that the manufacturing machine to be employed as the manufacturing apparatus described above, the NC (numerical control) machine performed Tsu by the automatic control is used the subsequent steps. Next, in the third step, as shown in FIG. 3, the receiving table 20 in the state described above is pushed upward together with the work B from below, and the outer end surface 2c of the overlapped clutch plate 2 is moved to the receiving table 20. A die 2 which is rotatable coaxially with and movable in the horizontal direction, and is fixed in the vertical direction.
1 to the lower surface.

Then, in the fourth step, the work B, which has been once pressed against the die 21, is moved together with the cradle 20 into the overlapping clutch plate 2.
Is lowered downward by the amount A of the end play. Further, in the fifth step, as shown in FIG. 3, a hydraulic pressure or the like is applied to the working fluid chamber 11a between the piston 4 and the clutch retainer 1 as shown by an arrow a to push up the piston 4 as shown by an arrow b, thereby causing polymerization. The clutch plate 2 is pressed against the die 21 again to fix and position the overlapping clutch plate 2, and the caulking position of the overlapping clutch plate 2, that is, the protruding position of the protruding portion 12 is determined.

The above steps are collectively shown in FIG. 3 for convenience of drawing. Then, in the subsequent caulking step, the outer peripheral wall 1c of the clutch retainer is held so as to lock the outer end surface 2c of the overlapped clutch plate 2 thus positioned.
Is projected inward to form a protrusion 12, and the protrusion 1
As shown in FIG. 5, the overlapping clutch plate 2 is caulked to assemble the overlapping clutch plate 2 into the clutch retainer 1 as shown in FIG. 5, and the work B is assembled and assembled. It is.

Next, before explaining the caulking process after the sixth process, the caulking mechanism of the present manufacturing machine will be described. As shown in FIGS. A cylinder support portion 23 is provided which protrudes to the side of a base portion 22 rotatably supporting the base 21. The guide rod 26 of the cylinder support portion 23 slides back and forth in the diameter direction (horizontal direction) of the work B. A cylinder 24 is attached to the work B.
And a punch blade 25 corresponding to the side where the die 21 is formed and the side surface of the die 21 are provided. The head (piston) 26a of the guide rod 26 is inserted into the hydraulic chamber 24a of the cylinder 24, and is pushed out in the direction of the work B by the hydraulic pressure W supplied to the hydraulic chamber 24a. A force in the opposite direction to the work B direction is applied to the fixing portion 27 via the spring 28.

In the following sixth step, the hydraulic pressure W is applied to the oil chamber 24a. Thereby, first, the spring 28
Is set to a predetermined strength, the die 21 moves integrally with the clutch plate 2d as shown by the arrow e in FIG. 3 to hit the clutch retainer 1, and the die 21 After the movement in the direction is stopped, the cylinder 24 moves as shown by an arrow c in FIG. 3 against the spring pressure of the spring 28, and the punch blade 25 moves the clutch retainer 1 of the work B as shown in FIG. Outer peripheral wall 1
Move to the position corresponding to c.

Further, when the punch blade 25 hits the clutch retainer 1 as described above, the position S1 of the punch blade 25 is changed.
(This position S1 may be a position near the position where the punch blade 25 hits the clutch retainer 1) and raises the supply fluid pressure (oil pressure) to the working fluid chamber 11a, thereby causing the piston 4 and thus the overlapping clutch plate 2 to move. The force of pressing upward is further increased, so that the overlapping clutch plate 2 is more strongly fixed in the vertical direction, and as a result, the overlapping clutch plate 2 is more strongly clamped in both the vertical and horizontal directions, and the swaging position is determined. Will be done.

Further, in the seventh step, the punch blade 25 of the cylinder 24 is pushed out against the spring pressure of the spring 28, and as shown in FIG. 5, the outer peripheral wall 1 of the clutch retainer 1 is pushed.
A portion of c is protruded to form a protruding portion 12. Thus, the caulking process in which the protruding portion 12 locks the outer end surface 2c of the overlapped clutch plate 2 is completed, and the work B is assembled.

In this case, the outermost one clutch plate 2 d of the overlapped clutch plate 2 is configured to also be used as a die corresponding to the inner peripheral surface of the clutch retainer 1. The caulking process as described above will be described with reference to a view of the portion where the protrusion 12 is formed shown in FIGS. 6 and 7 as seen from the plane direction (the upward direction of FIGS. 3 to 5). The state where the punch blade 25 corresponds to the ridge 5a of the spline groove 5 from the outer peripheral side of the clutch retainer 1 is illustrated. When this is pushed out as indicated by an arrow g in the seventh step, the tip of the punch blade 25 The cutting blade portion 25a of the above is pressed and bent so as to sandwich the mountain portion 5a from the outside, and as shown in FIG.
The mountain portion 25 is deformed into an M shape to form the protruding portion 12,
As shown in FIG. 5, the outer surfaces of the concave and convex teeth 13 of the outermost clutch plate 2d of the overlapped clutch plate 2 are locked.

In this case, as shown in the embodiments of FIGS. 9 and 11, in order to form the protrusion 12 at a portion slightly intruding from the outer edge of the clutch retainer 1, the punch tooth 2 is slightly downward.
5, and as shown in the embodiment of FIG. 10, in order to form the bent projection 12, the cutting blade 25 is formed.
What is necessary is just to perform by a simple bending blade (not shown) which does not have a.

The working steps up to the seventh step have been described with reference to the caulking step at one position of the overlapping clutch plate 2.
Since the overlapping clutch plate 2 has a plurality of concave and convex teeth 13 around the overlapping clutch plate 2 locked by the protrusions 12, the structure shown in FIG.
The pedestal 20 is rotated as indicated by the arrow f, and the steps from the third to the seventh are repeated at each protrusion forming position, and all the caulking steps are completed.

In this case, the work of forming each protrusion is not limited to one place, but the cylinder 24 is provided at several places such as two to three places which are connected to each other, and the above-mentioned caulking work is performed every few places. The cradle 20 may be sequentially rotated to perform the entire caulking operation while performing the collective operation. Also, the cylinder 24
May be provided on the entire circumference of the work B and the entire caulking process may be performed at once. However, in this case, since the manufacturing machine becomes considerably large, the processes are performed collectively at several locations as described above. It is appropriate to use the method described above.

As described above, in the manufacturing method of the present multi-plate clutch, the outer circumferential wall 1c of the clutch retainer 1 is protruded while the end play A is secured on the overlapped clutch plate 2 of the work B, and the overlapped clutch plate 2 2 is caulked, so that the overlapped clutch plate 2 is automatically locked by using a part of the clutch retainer 1 in a state where the end play is secured, whereby the conventional snap As in the method of manufacturing a multi-plate clutch using the ring 7, while measuring the end play of the overlapped clutch plate 2 for each multi-plate clutch, selecting and attaching a snap ring suitable for it is troublesome and requires skill. It is possible to automatically and easily manufacture a multi-plate clutch without requiring any work, and as a result, it can significantly contribute to improvement in production efficiency. There is.

In the method of manufacturing the present multi-plate clutch, the piston 4 and the overlapping clutch plate 2 composed of a plurality of clutches are incorporated in the clutch retainer 1, and the overlapping clutch plate 2 is pushed up together with the piston 4 to contact the die. Once the clutch retainer 1 and the overlapped clutch plate 2 are retracted to a position where the end play A of the overlapped clutch plate 2 is added, the working fluid is transferred to the working fluid chamber 11 a formed between the clutch retainer 1 and the piston 4. Is supplied to push the stacking clutch plate 2 together with the piston 4 against the piston 21, and the stacking clutch plate 2 is pressed against the die 21.
After that, the outer peripheral wall corresponding to the positioning portion of the overlapping clutch plate 2 is protruded inward by the punch blade 25 to form the protruding portion 12, and the protruding portion 1
2 to lock the overlapped clutch plate 2 and increase the supply fluid pressure to the working fluid chamber 11a at a position where the punch blade 25 hits the clutch retainer 1 or at a position near the position. Since the force for bringing the overlapping clutch plate 2 into contact with the lower surface of the die 21 is further increased, and the overlapping clutch plate 2 is further strongly clamped in the longitudinal direction, the overlapping clutch plate 2 is accurately positioned in the end play A. In this state, the staking operation is performed reliably, and a high-quality multi-plate clutch with high accuracy can be automatically produced. This has the effect of greatly contributing to mass production of good products.

[0043]

As described above in detail, according to the method for manufacturing a multi-plate clutch of the present invention according to claim 1, a multi-plate clutch plate having a piston and a plurality of plates is incorporated in the clutch retainer. In the method of manufacturing a plate clutch, the piston and the plurality of pistons are provided in the clutch retainer.
Incorporating the superposed clutch plate comprising the piston and
The polymer clutch plate was pushed up and hit the die
That is, the clutch retainer and the polymerized clutch plate are
Retreat to the position where the end play of the clutch plate is added
Between the clutch retainer and the piston
By supplying a working fluid to the formed working fluid chamber,
Again, pushing the overlapping clutch plate together with the piston.
The die to apply it to the polymerized clutch plate.
After positioning it, use a punch blade to
The outer peripheral wall corresponding to the positioning portion of the engagement clutch plate is
The protrusion is formed by protruding inward, and the protrusion causes
It is necessary to assemble so as to lock the overlapped clutch plate.
The production of each multi-disc clutch
While ensuring accurate end play
Of assembling a clutch plate on a clutch retainer
Work is performed automatically by mechanical work without manual work.
It has the advantage that it can be performed efficiently, quickly and reliably.

According to the method for manufacturing a multi-plate clutch of the present invention as defined in claim 2, the punch blade has the clutch retainer.
At or near the position where the
By increasing the supply fluid pressure to the body chamber, the polymerization
The force for bringing the latch plate into contact with the lower surface of the die is further increased.
To more strongly clamp the overlapped clutch plate in the longitudinal direction.
So that the overlapping clutch plate is
Each product while maintaining the desired position with respect to the
The assembly work can be performed automatically and reliably every time.
As a result, mass production of high-quality multi-plate clutches with high efficiency
There is an advantage that you can.

[0045]

[0046]

[Brief description of the drawings]

1 is a longitudinal sectional view showing a multi-plate clutch which is formed by the manufacturing method.

FIG. 2 is a cross-sectional view of a work showing a state in which a superposed clutch plate is incorporated in a clutch retainer in a manufacturing process of the present multi-plate clutch.

FIG. 3 is a sectional view showing a manufacturing process of the present multi-plate clutch.

FIG. 4 is a sectional view showing a manufacturing process of the present multi-plate clutch.

FIG. 5 is a cross-sectional view showing a manufacturing process of the present multi-plate clutch.

FIG. 6 is a cross-sectional view showing a state before the formation of the protruding portion when the protruding portion forming portion is viewed in plan in the manufacturing process of the present multi-plate clutch.

FIG. 7 is a cross-sectional view showing a state after a protrusion is formed in FIG. 6;

FIG. 8 is a VIII of FIG. 1 showing a protruding portion of the multi-plate clutch.
It is an expansion perspective view of a part.

FIG. 9 is a perspective view showing another embodiment of the projection of the present multi-plate clutch.

FIG. 10 is a perspective view showing still another embodiment of the projection of the present multi-plate clutch.

11 is a sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a partial cross-sectional view of a conventional multi-plate clutch assembled to an automatic transmission.

FIG. 13 is an exploded perspective view showing a mounting structure of a snap ring for locking a superposed clutch plate according to a conventional example.

[Explanation of symbols]

 1 Clutch Retainer (Clutch Drum) 1a Insertion Hole 1b Circular Groove 1c Outer Wall 1d Step 2 Overlapping Clutch Plate 2a Drive Side Clutch Plate 2b Passive Clutch Plate 2c Outer End Face 2d Outermost Clutch Plate 3 Clutch Hub 4 Piston 4a Outer Perimeter 5 Spline Grooves 5a Crests 5b Valleys 6 Fitting Grooves 7 Snap Rings 8 Drive Shafts 9 Spring Support Pieces 10 Return Springs 11 Working Fluid Supply Channels 11a Working Fluid Chambers 12 Projections 13 Uneven Teeth 20 Receptacles 20a Pressurizing Channels 21 Die 21a Inner contact part 22 Base part 23 Cylinder support part 24 Cylinder 24a Hydraulic chamber 25 Punch blade 25a Cutting blade part 26 Guide rod 26a Head part 27 Fixing part 28 Spring A End play B Work

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiro Kita 5-3-8, Shiba, Minato-ku, Tokyo Within Mitsubishi Motors Corporation (56) References: Kaihei 4-62429 (JP, U)

Claims (2)

(57) [Claims] 1. A method of manufacturing a multi-plate clutch in which a piston and a plurality of overlapping clutch plates are incorporated in a clutch retainer, wherein the overlapping clutch plate comprising the piston and a plurality of clutches is provided in the clutch retainer.
And push the polymerization clutch plate together with the piston.
After lifting and hitting the die, the clutch retainer and the
A superimposed clutch plate and an end play portion of the superposed clutch plate
Once retracted to the position where the
Actuated in the working fluid chamber formed between the engineer and the piston
By supplying the fluid again with the piston
By pushing up the polymerization clutch plate and applying it to the die
And the positioning was performed for the superposed clutch plate.
Thereafter, the punch blade is used to determine the position on the overlapped clutch plate.
The outer peripheral wall corresponding to the female part is projected inward to form a protrusion.
So that the protruding clutch engages the overlapping clutch plate.
Manufacture of multi-plate clutch, characterized by being assembled
Construction method. 2. The punch blade strikes the clutch retainer.
At or near the working fluid chamber,
By increasing the supply fluid pressure, the polymerization clutch plate
The force for contacting the lower surface of the die with the
A special feature is that the compound clutch plate is more strongly clamped in the vertical direction.
2. The method for manufacturing a multi-plate clutch according to claim 1, wherein: