JPS6318839Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a clutch/brake device, and more specifically, it is a combination type clutch/brake in which the clutch device and flywheel are integrated into a unit, and the response speed is increased. Regarding equipment.

In recent years, with the development of punch presses, such as turret punch presses, there has been a demand for the development of a clutch/brake device that has extremely fast response speed and can withstand long-term use.

This idea was devised in response to the above-mentioned demands, and was designed to minimize the distance between the clutch plate and the clutch friction plate in the clutch device, and to ensure that the clutch plate and the clutch friction plate are separated from each other. It is provided with a bullet that urges and holds the clutch plate at a neutral position separated from the plate, and the flywheel and clutch device are made into a unit and compact so that assembly is easy.

Hereinafter, with reference to the drawings, one embodiment of this invention will be explained.
I will explain one in detail. As an example, a case will be described in which the present invention is applied to a press machine. However, the device according to this invention is not limited to press machines, but can also be implemented in other appropriate machine tools.

A rotating shaft (crank shaft) 5 is rotatably supported on a frame 1 of the press machine via a bearing block 3, and a base of a connecting rod 9 is rotatably supported on an eccentric portion 7 of the rotating shaft 5. I've figured it out.
A ram 13, which is vertically movably guided by a ram guide 11 fixed to the frame 1, is pivotally connected to the tip of the connecting rod 9 via a connecting pin 15. Therefore, by appropriately rotating the rotating shaft 5, the ram 13 will move up and down along the ram guide 11.

A clutch device is detachably attached to one end of the rotating shaft 5. To explain the structure of this clutch device in detail, one end of the rotating shaft 5 is formed with a stepped portion to sequentially form an intermediate shaft portion 5a and a small diameter portion 5b smaller in diameter than the intermediate shaft portion 5a. . A bush 17 is removably fitted to the intermediate shaft portion 5a, and a clutch spline 23 is removably attached to the small diameter portion 5b via a key 19 and a nut 21. The clutch spline 23 has a spline portion 23a on its outer peripheral surface, and is integrally connected to the bush 17 by screwing or the like. A flywheel 27 is rotatably supported on the bush 17 via a bearing 25. This flywheel 27 is interlocked and connected to a drive source such as a motor via a V-belt (not shown). A recess 29 is formed in one side of the flywheel 27, and the recess 29 is closed by an annular lid member 31 attached with bolts or the like. Note that the lid member 3
A shim 33 is interposed between the flywheel 1 and the flywheel 27.

In the recessed portion 29 of the flywheel 27, a spline portion 23a of the clutch spline 23 is disposed.
A plurality of disk-shaped clutch friction plates 35 (in this embodiment, two clutch friction plates 35 are slidably spline-fitted to the
) are arranged. Multiple clutch friction plates 35
An annular clutch plate 37 is arranged between the two.
An annular pressing plate 39 is arranged on the side of the lid member 31. The clutch plate 37 and the pressing plate 39
is slidably guided and supported by a plurality of guide pins 41 whose ends are supported by the flywheel 27 and the lid member 31, and the press plate 39 is further guided by a plurality of guide pins 43. Supported. The clutch plate 37 is placed between the flywheel 27 and the clutch plate 37 and between the clutch plate 37 and the pressing plate 39 in a neutral position (a position in which the clutch plate 37 is separated from the clutch friction plate 35). A plurality of suitable neutral maintaining ammunition 45 such as coil springs for maintaining the neutral force are loaded. Further, a plurality of clutch disengaging bullets 47 are loaded between the flywheel 27 and the pressing plate 39. An annular cylinder chamber 49 is formed on the inner surface of the lid member 31.
An annular piston 51 that acts to press the pressing plate 39 is slidably fitted in the inside of the pressing plate 9 .

Therefore, in the above configuration, when pressure fluid is supplied into the cylinder chamber 49, the pressing plate 39 is pressed by the piston 51 against the neutral holding bullet 45 and the clutch disengaging bullet 47. Therefore, the flywheel 27, the clutch friction plate 35,
The clutch plate 37 and the pressing plate 39 are brought into close contact with each other, and the rotation of the flywheel 27 is transmitted to the rotating shaft 5. When the pressure fluid is discharged from the cylinder chamber 49, the clutch plate 37, the pressing plate 39, and the piston 51 are returned to their original positions by the actions of the neutral holding bullet 45 and the clutch disengaging bullet 47, and the flywheel 27 Rotation transmission from the rotary shaft 5 to the rotary shaft 5 is cut off.

In order to increase the response speed, the distance between the clutch friction plate 35 and the clutch plate 37 is adjusted so that the clutch device can be turned on and off with a small stroke of the piston 51 and the pressing plate 39. are provided at minute intervals, but when the clutch device is in the "off" state, the clutch plate 37 is held in the neutral position by the action of the neutral holding bullet 45. That is, the piston 51,
Even with a slight stroke of the pressing plate 39, the clutch device is in the "on" state, and the neutral maintaining ammunition 4 is turned on.
5. Since the clutch plate 37, pressing plate 39, etc. are returned to their original "disengaged" state by the action of the clutch disengagement bullet 47, the return speed is high. Therefore, the response speed of the clutch device for turning on and off can be made extremely fast.

Further, in the above configuration, the flywheel 2
The clutch device is located in the concave portion 7, making the overall configuration compact.Moreover, when the clutch spline 23 is removed from the small diameter portion 5b of the rotating shaft 5, the integrally connected bush 17 is removed as a unit. Therefore, the flywheel 27 and the clutch device can be handled as one unit, and can be attached to and removed from the rotating shaft 5 with great ease.

In order to supply pressure fluid to the cylinder chamber 49, a connecting block 53 is attached to the outer surface of the lid member 31 via a plurality of bolts. A supply passage 55 is bored in this connection block 53, and this supply passage 55 connects to the cylinder chamber 49 through a communication hole 57 bored in the lid member 31.
It is connected to. An annular groove 59 communicating with the supply path 55 and an annular discharge groove 61 are formed on the outer surface of the connecting block 53, and a piston 63 that can freely connect and disconnect the annular groove 59 and the discharge groove 61 is slidably connected. A freely movable cylindrical connecting tube 65 is attached with bolts or the like. A joint 69 having a supply port 67 and a discharge pipe 73 having a discharge port 71 are rotatably attached to the connecting tube 65.

In the above configuration, when pressure fluid is supplied from the supply port 67, the piston 63 slides and the annular groove 59
The communication between the piston 63 and the discharge groove 61 is cut off.
From the hole 63a provided in the annular groove 59, the supply path 55,
Pressure fluid is supplied into the cylinder chamber 49 through the communication hole 57. On the contrary, cylinder chamber 4
When the piston 63 is slid to the position shown in FIG. 1 by the internal pressure inside the piston 9, the annular groove 59 and the discharge groove 61 communicate with each other as shown in FIG.
The pressure fluid in the cylinder chamber 49 is discharged from the cylinder chamber 49. That is, the flow path resistance is small and rapid discharge is performed.

A brake device is attached to the other end of the rotating shaft (crankshaft) 5. Next, to explain in detail the configuration of this brake device, a brake spline 77 is attached to the other end of the rotating shaft 5 via a key 75.
A disc-shaped brake friction plate 79 is spline-fitted to the spline portion 77a of the brake member 7. This brake friction plate 79 has approximately the same size, shape, and weight as the clutch friction plate 35 in the clutch device. The brake friction plate 79 is located in a recess 83 formed in an annular brake bracket 81 fixed to the frame 1, and is pressed against the brake bracket 81 by the annular brake plate 85.
It performs a braking action on the rotating shaft 5. The brake plate 85 is slidably supported by a plurality of guide pins 87 fixed to the brake bracket 81, and there is a space between the brake plate 85 and an annular brake cylinder main body 89 fixed to the brake bracket 81. is brake spring 91
is loaded with ammunition. That is, the brake plate 85 is always urged inward by the action of the brake spring 91 so as to press the brake friction plate 79. An annular cylinder chamber 93 is formed on the outer surface of the brake cylinder main body 89, and an annular piston 95 is fitted into the cylinder chamber 93. An annular pressing plate 97 that is slidably supported on the other end of the rotating shaft 5 is always in contact with the piston 95, and this pressing plate 97 is attached to the brake plate 8 by a bolt or the like.
It is integrally connected with 5.

Therefore, when pressure fluid is supplied into the cylinder chamber 93 from the supply hole 99 provided in the brake cylinder main body 89, the piston 95, the pressing plate 97, and the brake plate 85 are moved to the left against the brake spring 91. . Therefore, brake plate 8
The pressure on the brake friction plate 79 by 5 is released,
The braking action of the rotating shaft 5 will be released. Next, when the pressure fluid in the cylinder chamber 93 is discharged, the brake plate 85 and the like move to the right due to the action of the brake spring 91, and the brake friction plate 7
9 is pressed, a braking action on the rotating shaft 5 is performed.

Note that the stroke of the brake plate 85 etc. in the brake device is the same as that of the press plate 39 in the clutch device.
It is almost equal to the stroke of
And the mass of moving parts such as the piston 95 is
The mass of the various moving parts in the clutch system is approximately equal. Furthermore, the brake spring 9 in the brake device
The strength of 1 is approximately equal to the total strength of the neutral retaining bullet 45 and the clutch disengaging bullet 47 in the clutch device. That is, if pressure fluid is simultaneously supplied from the same pressure source to cylinder chamber 49 in the clutch device and cylinder chamber 93 in the brake device, or if pressure fluid is discharged at the same time, both the clutch device and the brake device will be delayed. They are constructed so that they can operate at the same time.

In the above configuration, when the pressure fluid is discharged from the cylinder chamber 49 of the clutch device and the clutch device is in the "off" state, and the pressure fluid is discharged from the cylinder chamber 93 of the brake device and the clutch device is in the braking state. When pressurized fluid is simultaneously supplied to the cylinder chamber 49 in the clutch device and the cylinder chamber 93 in the brake device, the brake device becomes in the brake release state at the same time that the clutch device is in the "on" state as described above. Furthermore, since the total strength of the various ammunition in the clutch device and the strength of the brake spring in the brake device are approximately equal, and the masses of both moving members are approximately the same, the operation of the clutch device and the brake device are almost simultaneous. There is no delay in the operation of one side. Next, the cylinder chamber 49 in the clutch device
When the pressure fluid is discharged from the cylinder chamber 93 of the brake device at the same time as the pressure fluid is discharged from the cylinder chamber 93 of the brake device, the clutch device becomes in the “off” state and the brake device becomes in the braking state at the same time.

Note that the strokes of the pressure plate 39 and the brake plate 85 in the clutch device and the brake device are small, and in the clutch device, the clutch plate 37 is forcibly returned to the neutral plate by the neutral holding bullet 45. As a result, the response speed is high and it is possible to cope with higher speeds.

As can be understood from the above description of the embodiments, the gist of the invention is as stated in the claims for utility model registration. The stroke is approximately equal to the stroke of the pressing plate in the clutch device. Furthermore, the mass of the parts that move integrally with the brake plate in the brake device is approximately equal to the mass of the parts that move integrally with the pressing plate in the clutch device, and the brake plate is pressed and biased in the brake device. The strength of the brake spring is set to be approximately equal to the total strength of the clutch device's bullets that bias and hold the clutch plate in a neutral state and the clutch release bullets that bias the pressing plate in its disengaged state.

Therefore, according to the present invention, if pressure fluid is simultaneously supplied to the clutch device and brake device from the same pressure source, or if pressure fluid is discharged at the same time to control the clutch device and the brake device at the same time, both devices will be delayed. They operate at the same time without any problems. Therefore, even if a clutch device and a brake device are provided separately, for example, the brake device may perform a braking operation when the clutch device is in a connected state, or conversely, the braking device may operate in a braking state when the clutch device is in a connected state. To ensure safety by preventing the clutch device from being connected when the clutch is in position, and to increase the speed of the clutch brake device by reducing the strokes of the pressing plate in the clutch device and the brake plate in the brake device. It is something that can be done.

Furthermore, according to the present invention, since the clutch device is located in the recess provided on one side of the flywheel, the overall structure can be made compact, and the bush supporting the flywheel and the clutch friction plate of the clutch device are spline-fitted. Since the clutch spline is integrally connected and can be attached to and detached from one end of the rotating shaft, the flywheel and clutch device can be handled as one unit, and the assembly to the rotating shaft is easy. It can be easily attached and detached, and maintenance and inspection are easy.

Note that this invention is not limited to the above-described embodiments, but can be implemented in other forms by making appropriate design changes.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view of the device according to this invention. Explanation of the symbols representing the main parts of the drawing, 1...
Frame, 5...Rotation axis, 17...Button, 2
3...Clutch spline, 27...Flywheel, 29...Recess, 35...Clutch friction plate,
37...Clutch plate, 39...Press plate, 45...
Neutral maintenance ammunition, 47...Clutch disconnection ammunition, 7
9... Brake friction plate, 85... Brake plate, 91
...brake spring.

Claims (1)

[Scope of utility model registration request] Rotating shaft 5 rotatably supported on frame 1
An intermediate shaft portion 5a and a small diameter portion 5b are sequentially formed at one end, and a bush 17 removably fitted to the intermediate shaft portion 5a and a clutch spline 23 removably fitted to the small diameter portion 5b are integrated. A clutch friction plate 35 spline-fitted to the clutch spline 23 is provided in a recess 29 formed in one side of the flywheel 27 and rotatably supported by the bush 17. A clutch plate 37 is provided and a clutch friction plate 3 is provided.
5 to the clutch plate 37, and a spring 45 for urging and holding the clutch plate 37 in a neutral state separated from the clutch friction plate 35, and urging the pressing plate 39 in the disengaged state. A clutch disengaging bullet 47 is provided, and a brake plate 85 is provided which can freely come into contact with and separate from the brake friction plate 79 mounted on the other end of the rotating shaft 5, and the brake plate 85 is pressed against the brake friction plate 79. A brake spring 91 is provided, the stroke of the brake plate 85 is set to be approximately equal to the stroke of the press plate 39, and the mass of the component that moves integrally with the brake plate 85 is moved integrally with the press plate 39. The clutch is characterized in that the mass of the brake spring 91 is approximately equal to the mass of the parts that are connected to the clutch, and the strength of the brake spring 91 is approximately equal to the total strength of the neutral retaining bullet 45 and the clutch disengaging bullet 47. Brake device.