JPH0626541A - Motorized clutch brake system - Google Patents

Abstract

PURPOSE:To provide a motorized clutch brake system that is able to change its constituent parts quickly and easily at the time of repairing a clutch brake and of replacing a clutch disk or the like. CONSTITUTION:A driven shaft 22 is pivoted to a fixed casing 20, while two brake disks 26, 32, a brake piston 33 and a braking cap 35 are all housed in an annular space formed by the driven shaft 22 and a ring fixed sleeve 28 attached to this fixed casing, and a rotary sleeve 40 installed tight with a rotator core 70 and an outer cylinder 71 installed tight with a stator coil 73 both are installed at the outside of the fixed sleeve 28. In succession, two clutch disks 27, 52 and a clutch piston 57 are housed in an annular space made up of a tip side of the driven shaft 22 and the ring rotary casing 46, and these members stored in respective ring spaces are made so as to be taken out of the tip side of the driven shaft 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorized clutch / brake device for use in a mechanical press or the like, and more particularly to repair of a clutch / brake and clutch / brake.
A mode that allows quick replacement of parts such as a disk.
The present invention relates to a clutch / break device with a clutch.

[0002]

2. Description of the Related Art Generally, in a mechanical press, energy constantly supplied from an electric motor is stored in a flywheel in the form of rotational energy, and a clutch / break is incorporated in a drive unit to periodically generate working energy. I'm trying to release it. However, the mechanical press in which the flywheel is rotated from the electric motor via the pulley and the belt has a problem because a large space is required for the electric motor and the flywheel. Therefore, there is already known a clutch / break device with a motor in which an electric motor, a clutch, a brake, etc. are unitized to make the whole compact. (JP-A 2-1
(No. 11240 publication)

A conventional clutch / break device with a motor will be described below with reference to FIG. A fixed casing 1 is provided with a driven shaft 2 rotatably supported by the casing 1, and a fixed sleeve 3 having a large diameter hole portion 3'and a small diameter hole portion 3 "capped on the driven shaft 2. The fixed case of the fixed sleeve 3
In the annular space formed between the large-diameter hole portion 3 ′ on the side of the thing 1 and the driven shaft 2, the break parts (break disk 4,
It contains the brake piston 5).

A bearing 6 is provided on the outer circumference of the fixed sleeve 3.
A ring-shaped rotary sleeve 7 is rotatably supported via a shaft, and a rotor core 8 is fixed to the outer peripheral portion of the sleeve 7. An outer cylinder 10 in which a stator coil 9 facing the rotor core 8 is fixed is provided in the fixed casing 1. A rotary casing 11 is provided on the side opposite to the fixed casing 1 of the rotary sleeve 7, and a flywheel 12 is attached to the outer peripheral portion of the casing 11. A clutch component (clutch disc 14, clutch piston 15) is provided in an annular space formed between the driven shaft 2 and the rotary casing 11.
Etc.), and on the open end side of the rotating casing 11,
A clutch cap 13 is provided. Reference numeral 16 is a bearing retainer interposed between the fixed sleeve 3 and the rotary casing 11.

[0005]

The above-mentioned conventionally known motor-equipped clutch / brake device has the following problems. That is, when the clutch disc 14 is replaced, the clutch cap 13 may be removed from the rotary casing 11 with the clutch piston 15 housed therein, but it takes a lot of time to replace the brake disc 4. Was there.

The replacement work of the break disk 4 will be described below. In addition to replacing the clutch disc 14, the flywheel 12 and the rotary casing 11 are removed from the rotary sleeve 7. Next, after removing the bearing retainer 16 from the fixed sleeve 3, the rotor core 8, the rotary sleeve 7, the bearing 6 and the fixed sleeve 3 are removed from the fixed casing 1. Then, the break disk 4 was replaced. For this reason, when replacing the break disk 4,
Most of the parts on the clutch side including the heavy items such as the flywheel 12 and the like from the fixed casing 1 have to be removed from the fixed casing 1, which requires a great deal of time.

The present invention has been made in view of the above problems of the prior art, and its object is to repair clutches and brakes and replace parts such as clutches and brake disks. In this case, it is an object of the present invention to provide a clutch / break device with a motor, which enables quick and easy replacement of parts.

[0008]

To achieve the above object, the clutch / brake device of the present invention has a fixed casing for a driven shaft 22 whose one end is pivotally supported by a fixed casing 20.
An annular fixed sleeve 28, one end of which is fixed to the fixed casing 20 side, is capped on the portion projecting from the singing 20, and the inner peripheral surface of the fixed sleeve 28 and the driven shaft 22 are provided. The break disks 26, 32 and the break piston 33 are housed in a space formed between the outer circumference and the inner circumference of the end of the fixed sleeve 28 opposite to the fixed casing 20. A brake cap 35 is provided on the rotary sleeve 4 and a rotary sleeve 4 is provided on the outer periphery of the fixed sleeve 28 via a bearing 39.
0, the rotary casing 46 is removably attached to the opposite side of the rotary sleeve 40 from the fixed casing 20, and the rotor core 70 is fixedly mounted on the outer peripheral portion.
An outer cylinder 71 having a stator coil 73 facing 0 is fixed to the fixed casing 20, and the rotary casing 4 is attached.
6, the clutch disks 27 and 52 are housed in a space formed between the inner peripheral surface of the drive shaft 22 and the outer peripheral surface of the driven shaft 22 protruding from the fixed sleeve 28, and the open end of the rotary casing 46 is accommodated. The clutch cap 53 is removably attached to the portion, and the clutch piston 57 is housed between the clutch cap 53 and the clutch disks 27 and 52.

The intermediate portion of the driven shaft 22 is axially supported by the brake cap 35 via a half bush 36, and the driven shaft 22 is fixed to the clutch cap 53 from the shaft end on the fixed casing 20 side. The holes 61 are formed to the vicinity of the holes 61, and a large number of small holes 62, 63, 64 are radially formed from the holes 61 toward the clutch disks 27, 52, the half bush 36, and the brake disks 26, 32, respectively. The clutch cap 53 is provided with a hole 59, and the oil supply pipe 65 extending to the vicinity of the small hole 63 for the half bush 36 is connected to the hole 59.

[0010]

When the clutch disks 27 and 52 are replaced,
After removing the clutch cap 53 and the clutch piston 57 from the rotary casing (including the rotary clutch disc holding member 50) 46, the clutch discs 27 and 52 are removed.
Take out the new clutch disc 27,5
2 is stored in the original position, and finally, the clutch piston 57 and the clutch cap 53 are attached to the rotary casing 46, and the process is completed.

When the break disks 26 and 32 are replaced, the flywheel 42 is removed from the rotary casing 46, and then the rotary casing 46 is removed from the rotary sleeve 40. Next, after removing the half bush 36, the brake cap 35, the brake spring 43, and the brake piston 33 from the fixed sleeve 28, the brake disks 26 and 32 are taken out, and then a new brake. -Keep the discs 26 and 32 in their original positions, and fix the sleeve 2.
8, the brake piston 33, the brake spring 43, the brake cap 35, and the half bush 36 are attached in the reverse order to the above, and finally the rotary casing 46 is attached to the rotary sleeve 40. The flywheel 42 is attached to the rotary casing 46 to complete the process.

[0012]

EXAMPLES Examples will be described below with reference to FIG. Figure 1
FIG. 1 is a sectional view of a clutch / break device with a motor showing an embodiment of the present invention. A fixed casing 20 serving as a mounting member for a clutch / break device with a motor is provided with a hole 20 ', and a driven shaft 22 is provided in the hole 20' via a bearing 21.
Is pivotally supported. The driven shaft 22 has a fixed casing 2
0, one side of which is provided with a rotary brake disc 26 and a fixed clutch disc 27, which will be described later. The driven shaft 22 in the fixed casing 20 has a planetary gear reducer (not shown). A pinion 23 that meshes with the planetary gear is attached.

At the protruding portion of the driven shaft 22, a tip end portion and a base end portion on the side of the fixed casing 20 are formed with slightly larger shaft diameters, and male splines 24 and 25 are formed at the portions. A plurality of rotary brake disks 26 and a fixed clutch disk 27 are fitted in the male splines 24 and 25, respectively. Further, the fixed casing 20 includes
An annular fixed sleeve 28 is attached via a bolt 29 so as to be capped on the driven shaft 22. Fixed sleeve 2
On the side of the fixed casing 20 of FIG. 8, there is formed a break disk supporting portion 28 'which projects in the axial direction of the driven shaft 22. That is, the cross-sectional shape U having a through hole in the center
It is shaped like a letter.

A cylindrical fixed brake disk holding member 30 is fitted on the inner peripheral surface of the fixed sleeve 28.
A female spline 31 is formed on the inner peripheral surface of the fixed brake disc holding member 30, and a plurality of fixed brake discs 32 are alternately arranged on the rotary brake disc 26 in the female spline 31. It is inserted by being sandwiched between.

Although not shown, the rotary brake disc 26 and the fixed brake disc 32 are formed with spline grooves that engage with the splines 24 and 31.
In the space formed between the inner peripheral surface of the fixed sleeve 28 and the outer peripheral surface of the driven shaft 22, the break disk 26,
An annular break piston 33 is fitted on the opposite side of the fixed casing 20 with 32 interposed therebetween. The brake piston 33 is composed of a piston portion 33 ″ fitted to the fixed sleeve 28 and a brake pushing portion 33 ′ that pushes the brake discs 26 and 32.

An annular brake for fitting the piston portion 33 'to the end portion of the fixed brake disc holding member 30 on the side of the brake piston 33 and the inner peripheral portion of the fixed sleeve 28 near the end portion. A piston cylinder 34 is formed. The fixed sleeve 28 and the fixed casing 20 include a brake piston cylinder 34 and a working fluid (oil, oil,
Fluid supply passages 37, 38 for supplying air, etc. are formed. An annular break cap 35 is attached to an end of the fixed sleeve 28, and a half bush 36 is detachably attached between the break cap 35 and the driven shaft 22. Installed.

A break spring 43 is interposed between the break piston 33 and the break cap 35.
The brake piston 43 is constantly urged toward the brake by the brake spring 43.

A rotary sleeve 40 is rotatably supported on the outer peripheral portion of the fixed sleeve 28 via a bearing 39, and a rotor core is provided on the outer peripheral portion of the rotary sleeve 40. 7
0 is fixed. An outer cylinder 71, to which a stator coil 73 facing the rotor core 70 is fixed, is attached to the fixed casing 20. A jacket plate 74 for forming an annular space is provided on the outer peripheral portion of the outer cylinder 71, and a cooling liquid (oil or water) is circulated in the space by an unillustrated cooling liquid pump. There is.

On the opposite side of the fixed sleeve 20 of the rotary sleeve 40, a rotary casing 46 is attached via a bolt 47 so as to be capped on the driven shaft 22. A clutch disk support portion 49 protruding toward the axial direction of the driven shaft 22 is formed on the brake cap 35 side of the rotary casing 46. That is, it is formed in a substantially U-shaped cross section having a through hole in the center.
A flywheel 42 is attached to the outer peripheral portion of the rotary casing 46 via a bolt 41.
2 serves to cover the open side of the annular space formed by the rotary sleeve 40 and the outer cylinder 71.

Further, on the inner peripheral surface of the rotary casing 46,
A tubular rotary clutch disc holding member 50 is fitted in, a female spline 51 is formed on the inner peripheral surface of the rotary clutch disc holding member 50, and a plurality of rotary clutch discs 52 are formed on the female spline 51. The fixed clutch discs 27 fitted on the driven shaft 22 are alternately sandwiched and fitted. Although not shown, the fixed clutch disc 27 and the rotary clutch disc 52 are formed with spline grooves that engage with the splines 25 and 51.

A clutch cap 53 is attached to an end of the rotary clutch disc holding member 50 via a bolt 54.
Is installed. An annular groove 55 is formed on the side of the clutch cap 53 facing the clutch discs 27, 52, and the disc 2 is formed on the side opposite to the driven shaft 22.
A rotary valve 56 for supplying oil to 6, 27, 32, 52 and the half bush 36 is mounted.

An annular concave groove 55 of the rotary casing 46.
Is a clutch cylinder 58, and the cylinder 5
8, a clutch piston 57 is fitted in, and on the clutch disc 27, 52 side of the clutch piston 57,
A clutch pushing portion 57 'is provided so as to project. A clutch release spring 66 is interposed between the clutch piston 57 and the rotary clutch disc holding member 50, and the clutch release spring 66 constantly urges the clutch piston 57 toward the clutch release side.

The clutch cap 53 has a hole 59 for communicating the rotary valve 56 with a hole 61 provided in the driven shaft 22, and a fluid supply path 60 for communicating the rotary valve 56 with the clutch cylinder 58. Has been drilled.
The hole 61 provided in the driven shaft 22 is a blind hole extending from the side shaft end of the clutch cap 53 to the vicinity of the fixed casing 20.
7,52, half bush 36, break disk 26,3
2. A large number of small holes 62, 6 of radiation penetrating toward each of the two
3, 64 are drilled.

On the side of the driven shaft 22 of the clutch chap 53, the end connected to the hole 59 has a half bush 36.
Oil supply pipe 65 extended to the vicinity of the small hole 63 for oil
Is installed. The fixed casing 20 has an oil receiver 6 whose other end is desired on the outer peripheral surface of the rotary sleeve 40.
8 is attached to the oil receiver 68 and the rotary sleeve 4
The outer peripheral portion of 0 has a known labyrinth seal structure, and between the clutch cap 53 and the driven shaft 22,
An oil seal is provided.

In the above embodiment, the fixed sleeve 28 and the rotary casing are fixed in consideration of the surface pressure and wear resistance of the splines 31, 51 which engage with the fixed brake disc 26 and the rotary clutch disc 52. Although the fixed brake disc holding member 30 and the rotary clutch disc holding member 50, which are separate from the unit 46, are provided, they may be formed integrally with the fixed sleeve 28 or the rotary casing 46. In addition, the breaking spring 43 causes a breaking action,
I tried to make the clutch action by fluid pressure,
On the contrary, the structure may be such that the brake action is performed by the fluid pressure and the clutch action is performed by the spring. In this case, the brake action is released by the spring and the clutch action is released by the fluid pressure.

Further, although the clutch cap 53 is attached to the fixed clutch disc holding member 50, it may be attached to the rotary casing 46. In addition, the concave groove 55 of the clutch cap 53 is formed in the clutch piston cylinder 5
8, the clutch cap 53 is attached to the rotary casing 46, a convex portion projecting toward the driven shaft 22 is provided at the center of the clutch cap 53, and the convex portion and the rotary casing 46 are provided. An annular space formed by the inner peripheral surface may be used as the clutch cylinder.

Further, the flywheel 42 is a flywheel.
Although the flywheel 42 and the flywheel mounting sleeve 40 are integrally attached to the reel mounting sleeve 40 in a detachable manner, the flywheel may be formed integrally with the flywheel 42 and the flywheel mounting sleeve 40.

The operation of the present invention will be described below. When a rotating magnetic field is generated in the stator coil 73 by, for example, a three-phase alternating current, the rotor core 70 and the rotating sleeve 40,
The flywheel 42 rotates via the rotary casing 46. At this time, since no fluid pressure is applied to the brake cylinder 34 and the clutch cylinder 58, the brake spring 43 presses the rotary brake disk 26 and the fixed brake disk 32 via the pressing portion 33 '. The clutch is released by the clutch release spring 66 while braking (braking). Therefore, in this state, the driven shaft 22 is broken, and the rotary casing 46, the flywheel 42, the rotary sleeve 40, and the rotor core 70.
Only the one is supposed to rotate.

Next, when the driven shaft 22 is rotated, the brake cylinder 34 is passed through the fluid supply passages 37, 38 and 60.
When fluid pressure is applied to the clutch cylinder 58, the brake piston 33 compresses the brake spring 43 and moves to the clutch side to release the brake. Further, the clutch piston 57 compresses the clutch release spring 66 by the fluid pressure and moves to the clutch disc 27, 52 side, and the clutch is put in the engaged state. As a result, the brake of the driven shaft 22 is released, and the driven shaft 22 is released through the clutch.
The rotary casing 46 (flywheel 42) is connected to the driven shaft 22.

On the other hand, in the case of stopping the rotation of the driven shaft 22, when the fluid pressure acting on the brake cylinder 34 and the clutch cylinder 58 is released, the brake spring 43 and the clutch release spring 66 are acted again to cause the brake. -The clutch is disengaged and the clutch disengages. Therefore, the rotary casing 46
With the (flywheel 42) rotated, the driven shaft 22
Only stop.

Next, the clutch and the brake in the device of the present invention will be described.
The disk exchange of G will be described. When exchanging the clutch discs 27 and 52, the bolt 54 is loosened, the clutch cap 53 is taken out from the rotary clutch disc holding member 50 (rotary casing 46) together with the rotary valve 56 and the clutch piston 57, and then fixed. The clutch disc 27 and the rotary clutch disc 52 are taken out alternately.

Next, the new fixed clutch disc 27 and the rotary clutch disc 52 are alternately inserted while engaging with the respective spline grooves. Predetermined clutch disc 2
When the insertion of 7, 52 is completed, finally, the clutch cap 53 (the rotary valve 56 and the clutch piston 57
(Including also) to the rotary casing 46 via the bolt 54 to complete the process.

When replacing the brake discs 26, 32, the bolts 41 are loosened to remove the flywheel 42 from the rotary casing 46, and then the bolts 47 are loosened to disengage the clutch discs 27, 52. And clutch piston 5
The rotary casing 46 is removed from the rotary sleeve 40 with 7 and the like stored. Next, after removing the half bush 36, the break cap 35, the break spring 43, and the break piston 33 are removed. Then, the fixed brake disc 32 and the rotary brake disc 26 are alternately taken out, and when all the takeouts are completed, the new fixed brake disc 32 and the rotary brake disc 26 are engaged with the respective spline grooves. Insert them alternately while mixing. After the insertion of the predetermined break disks 26, 32, the break piston 33 and the break spring 4 are attached to the fixed sleeve 28.
After inserting 3 and the brake cap 35, the half bush 36 is attached. Thereafter, the rotary casing 46 is attached to the rotary sleeve 40 via the bolts 47, and then the flywheel 42 is attached to the rotary casing 46 via the bolts 41.
Install and complete.

At this time, the break disks 26, 3
When only 2 is to be replaced, the rotary casing 46 may be attached to the rotary sleeve 40 with the clutch disks 27, 52, the clutch piston 57 and the like housed in the rotary casing 46, or the above-mentioned clutch. Disks 27,5
Similar to the replacement work of 2, the clutch side may be disassembled and sequentially assembled. Of course, when the brake disks 26, 32 and the clutch disks 27, 52 are also replaced, the clutch disks 27, 52 and the brake disks 26, 32 may be replaced in succession. Needless to say.

Further, when only the brake disks 26, 32 are replaced, the rotary casing 46 is rotated while the clutch disks 27, 52, the clutch piston 57, etc. are housed in the rotary casing 46. Since the spline grooves of the clutch discs 27 and 52 are disengaged when the spline grooves are engaged with the splines 25 and 51, the hydraulic fluid is sent from the rotary valve 56 to the clutch cylinder 58 and the clutch piston 57. Is operated to press the clutch disks 27 and 52 to fix them.

[0036]

According to the present invention constructed as described above, when the clutch discs are replaced, the clutch caps and the clutch pistons are simply removed from the rotary casings so that the respective clutch discs can be removed from the rotary casings. When replacing the brake disc, remove the flywheel from the rotary casing, remove the rotary casing with the clutch disc etc. stored from the rotary sleeve, and then fix it. Simply remove the brake cap and brake piston from the sleeve,
Each break disk can be taken out from the fixed sleeve.

Even in the apparatus of the present invention, the flywheel must be removed from the rotary casing, but the rotor core and the rotary sleeve, which are relatively heavy, function as the flywheel. The flywheel itself can be made lighter and less labor is required when removing the flywheel from the rotating casing.

Further, in order to supply oil to the clutch disc, the half bush and the brake disc from the respective small holes provided in the driven shaft, an oil supply pipe is connected to the clutch cap and the tip of the pipe is connected. Since it extends to the vicinity of the half bush, the oil can be supplied to the clutch disc and the brake disc as well as the half bush in a substantially even manner.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a motorized clutch / brake device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional motorized clutch / break device.

[Explanation of symbols]

 20 fixed casing 20 'hole 22 driven shaft 26 rotary brake disc 27 fixed clutch disc 28 fixed sleeve 32 fixed brake disc 33 brake piston 35 brake cap 36 half bushing 40 rotary sleeve 42 42 Flywheel 46 Rotating casing 49 Clutch disc support 52 Rotating clutch disc 53 Clutch cap 57 Clutch piston 61 Hole 62, 63, 64 Small hole 65 Oil supply pipe 70 Rotor core 71 Outer cylinder 73 Stator coil

Claims (2)

[Claims] 1. A portion of a driven shaft (22), one end of which is supported by a fixed casing (20), projecting from the fixed casing (20),
An annular fixed sleeve (28) having one end fixed to the fixed casing (20) side is capped and provided, and the inner peripheral surface of the fixed sleeve (28) and the driven shaft (22). The brake discs (26, 32) and the brake piston (33) are placed in the space formed between the outer peripheral surface and
The fixed casing of the fixed sleeve (28).
A brake cap (35) is provided on the inner periphery of the end opposite to (20), and a rotary sleeve (40) is provided on the outer periphery of the fixed sleeve (28) via a bearing (39). ) Is provided, and the rotary sleeve is
On the side opposite to the fixed casing (20) of (40), rotate casing (4
6) is detachably attached, the rotor core (70) is fixedly mounted on the outer periphery, and the outer cylinder (71) fixed with the stator coil (73) facing the rotor core (70) is fixed to the outer cylinder (71). Attached to the casing (20), the inner peripheral surface of the rotary casing (46) and the fixed sleeve (28)
The clutch discs (27, 52) are housed in the space formed between the driven shaft (22) and the outer peripheral surface of the driven shaft (22), and the clutch cap (46) is provided at the open end of the rotary casing (46). 53) is detachably attached, and the clutch piston (57) is provided between the clutch cap (53) and the clutch disc (27, 52).
Clutch with motor, characterized by containing
Ki device. 2. A half bush (3) is provided at an intermediate portion of the driven shaft (22).
6) through the brake cap (35) through the shaft, the driven shaft (22) from the clutch cap (53) side shaft end to the vicinity of the fixed casing (20) hole (61) And the hole
A large number of small holes (62, 63, 64) are radially formed from (61) toward the clutch disc (27, 52), the half bush (36) and the brake disc (26, 32), respectively. The clutch cap (5
A hole (59) is formed in 3), and an oil supply pipe (65) extending to the vicinity of the small hole (63) for the half bush (36) is connected to the hole (59). A clutch / brake device with a motor according to claim 1.