JP2755098B2 - Detonation pressure processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detonation pressure processing apparatus capable of easily obtaining a high-pressure impact pressure and shortening a processing cycle.

[0002]

2. Description of the Related Art In the case of performing three-dimensional molding by applying a hydraulic pressure to the other surface of a member such as a plate material having one surface supported by a mold, an extremely high pressure is required instantaneously. I do. Conventionally, several techniques are known for obtaining such a hydraulic pressure.

For example, first, a bullet is shot into a liquid such as pressurized water to generate a shock hydraulic pressure in the liquid,
Japanese Patent Application Laid-Open No. H01-121702 discloses an impact hydraulic pressure generating device which applies the pressure to a member such as a plate material and presses the member against a mold to form a three-dimensional molding.
No. 157725.

[0004] Second, there is also known an explosion molding apparatus which generates an impact water pressure by burning an explosive in water and performs three-dimensional molding of a thin plate with the pressure. This device is mainly used for molding large parts.

[0005] Thirdly, there is also known an apparatus in which an impact hydraulic pressure is generated by causing a piston accelerated at a high speed by gas pressure or the like to collide with a liquid surface of a pressurizing liquid contained in a container. Have been.

[0006]

However, the above-described methods of generating the impact hydraulic pressure by the first to third devices have the following common or unique problems. 1. The whole or part of the inner wall of the container is directly exposed to the high temperature and high pressure field. 2. Use dangerous and expensive explosives. 3. Generate loud noises. 4. There must be restrictions on the installation location due to the danger. 5. It is difficult to significantly change the ultimate pressure. 6. Not suitable for repeated operation in a short time. 7. Large equipment is required. 8. Moving parts such as pistons need to be replaced. 9. The duration of the pressure is long, so the mold is seriously damaged. 10. Solids etc. remain in the hydraulic chamber. 11. It is difficult to perform maintenance and inspection due to the complicated structure of the device. 12. Only one impact water pressure can be obtained in one shot. 13. Since a liquid is used as the pressure medium, equipment for handling the liquid is required.

That is, in the first method described above, 1
~ 6,8,9 ~ 13, the second method is 1 ~ 7,9,10,1
The second, third, and third approaches have 1,4-9,11-13 disadvantages.

An object of the present invention is to solve the above-mentioned problems caused by the conventional method and to provide an apparatus which can be operated safely and repeatedly in a short time, and which can obtain high-speed and high-pressure impact pressure to perform high-efficiency machining. It is intended for.

[0009]

SUMMARY OF THE INVENTION According to the present invention, it is an object of the present invention to provide a combustion chamber in which a cross-sectional area decreases from one end to another end, and an ignition chamber in which fuel is supplied and an ignition plug is provided. When,
A plurality of guide paths which extend from the ignition chamber and communicate with one end of the combustion chamber, and which are connected to an opening of the other end which is a minimum cross-sectional area of the combustion chamber and have a liquid or elastic body therein. In a device having a pressure chamber to be accommodated and a processing chamber communicating with the pressure chamber, the pressure chamber and the processing chamber are connected to each other by a clamp device so as to be separable at a flange portion, and the clamp device is divided into a plurality in the circumferential direction. It has a divided clamp member, and the cylinder device is connected to the clamp member by the combustion pressure transmission.
It is obtained by being connected so as to act in a direction perpendicular to the seeding direction, so that the flange portion can be clamped and released.

[0010]

According to the present invention, high-pressure processing is performed in the following manner.

First, a combustible mixed gas having a substantially stoichiometric mixture ratio is filled into a combustion chamber, an induction passage, and an ignition chamber which are communicated with each other.

Next, ignition is performed in an ignition chamber.

[0013] When ignited, the flame advances in the combustion chamber through a guideway by detonation. that time,
Since each guide path has an equal path, each guide path flame reaches one end of the combustion chamber at the same time.

In the combustion chamber, the flame propagates toward the other end, but since the cross-sectional area of the combustion chamber decreases toward the other end, the flame pressure increases and reaches a maximum value at the other end. . A pressure chamber is connected to the opening at the other end directly or through a membrane, and the liquid surface or the end surface of the elastic body faces the opening, so that the pressure is transmitted to the liquid or the elastic body in the pressure chamber. , Converted to liquid or repressive. The hydraulic pressure or the elastic pressure is transmitted to a workpiece, such as a plate material, which is disposed on a mold in the processing chamber and faces the liquid or the elastic body, and the workpiece is processed by the mold.

After the processing of one workpiece is completed,
The cylinder device connected to the clamp member is operated to release the clamp of the clamp member. After a while
The pressure chamber and the processing chamber are separated from each other at the flange portion, one processed workpiece (product) is taken out, and a new unprocessed workpiece is set in the processing chamber. Then, the pressure chamber and the processing chamber are closed again, fastened at the flange portion by the clamp member, and the next processing is performed in the above-described procedures.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of an apparatus according to a first embodiment of the present invention. In the figure, reference numeral 1 denotes a combustion chamber, and the combustion chamber 1 is formed in a horizontal shape extending in a radial direction. The combustion chamber 1 has a cross-sectional area gradually reduced toward the center by the upper wall surface of a part of a substantially spherical surface bulging downward, and the outer diameter portion is maximum, the central portion 1B
And a convergent portion is formed. On the upper wall surface, an appropriate number of grooves 1C are formed radially toward the center, and the combustion chamber 1 is divided into pressure chambers 1 at a central portion 1B.
It communicates with 2.

The inner wall of the outer diameter portion 1A of the combustion chamber 1 communicates with a plurality of hole-shaped guide paths 2 extending radially outward. The plurality of guide paths 2 are converged on a dispersion space 3 in the shape of a disc space above. The dispersion chamber 3 has an ignition chamber 4 extending upward.
Are connected. An ignition plug 5 operated by an ignition device 6 is provided at an upper portion of the ignition chamber 4, and a fuel supply source 9 and an oxidant supply source 10 are connected via flow meters 7 and 8, respectively. . Reference numeral 11 denotes a pressure gauge for checking the pressure in the ignition chamber 4.

A central portion 1B of the combustion chamber 1 is opened, and a pressure chamber 12 for containing a liquid or an elastic body G is connected to the opening. Is provided. The pressure chamber 1
2, an elastic body G such as natural rubber or the like is housed as a pressure medium in the case of the illustrated example, and even if its end face directly faces the center 1B of the combustion chamber 1 as shown in the figure, The intermediate surface may be formed of a tough and easily deformable film body.

The processing apparatus 13 accommodates therein, for example, a mold 16 whose upper surface has a three-dimensional shape for molding so as to be exchangeable. The processing device 13 can also hold, for example, a peripheral edge of a plate material or the like P to be formed between the two flanges, for example, between the pressure chamber 12 and the pressure chamber 12. The processing device 13 is connected to a vacuum pump device 17 that penetrates the mold 16 and communicates with an upper space thereof to evacuate the space. The vacuum pump device 17 is also connected to the ignition chamber 4 described above.

The pressure chamber 12 and the processing device 13 are provided with their tapered flange portions 14 and 15 and the clamping device 2.
By 0, they are separated from each other. The clamp device 20 has a configuration shown in FIGS.

[0022] The clamping device 20 includes four circumferentially with U-shaped cross section with a matching tapered inner surface shape into four divided form as the same segment outer surface of the flange portion 14, 15 in the example as shown in the drawing circumferential direction Divided into two
One clamp member 21A to 21D and a pneumatic or hydraulic cylinder device 3 in which a rod is connected to each clamp member
4 and a guide for guiding the clamp members 21A to 21D in the radial direction. As evident from Figure 2
As described above, the cylinder device is divided into circumferentially divided cylinders.
Operates in the direction connecting the lamp members, that is, in the tangential direction
It is provided so that. This direction is the propagation direction of the combustion pressure
Is at right angles.

[0023] Other three respectively corresponding to the respective clamping members 21A~21D cylinder device and guide, Izu
Since they also have the same configuration,
Description will be made focusing on 1A and 21B.

The clamp member 21A is supported and guided in the circumferential direction by a radial guide surface (not shown) formed on a guide 24A mounted on a base 24 mounted on the floor. The clamp member 21A has block portions 26A and 27A at both ends in the circumferential direction, and another clamp member 2 adjacent to the block portions 26A and 27A.
It is movably supported by two upper and lower guide connecting members 25 provided tangentially to 1B and 21D so that the relative position is variable.

The above-mentioned guide connecting member 25 is formed by the blocks 27A, 26 of the adjacent clamp members 21A, 21B shown in FIG.
5, and guide holes 28 formed in the adjacent block portions 27A and 26B as shown in FIG.
A and 28B penetrate and are slidable. The guide connecting member 25 is fixed to the block portion 26B side by a nut 29 with a screw portion at an end portion protruding from the block portion 26B, and an end portion protruding from the block portion 27A further penetrates the cylinder block 30A to form a screw portion. Is fixed to the cylinder block 30A by a nut 31. As shown in FIG. 5, two such guide connecting members 25 are provided in parallel in the upper and lower directions.

In this embodiment, as shown in FIG. 5, one of the block portions 27A is provided with an elastic member 32A having a core material on the surface facing the adjacent block portion 26B. Is formed with a receiving recess 33B for slidably receiving the elastic member 32A.

At the position where the axis of the core member of the elastic member 32A is extended, that is, the center position of the two guide connecting members 25, 25, the next adjacent clamping members 21B, 2 in FIG.
A hydraulic or pneumatic cylinder is provided as shown in FIG. 5 as well as the block portions 27B and 26C of 1C. In this case, the cylinder body 34 is fixed to the cylinder block 30B, and its rod 35 is attached to the block portion 27B through the cylinder block 30B.

In the apparatus of this embodiment having such a configuration, generation of high-pressure elastic pressure and machining using the same are performed as follows.

First, a plate material P to be processed, for example, molded, is set on a mold 16.

Next, the inside of the ignition chamber 4, the dispersion chamber 3, the guide path 2 and the inside of the combustion chamber 1 are set to a predetermined degree of vacuum by the vacuum pump device 17. At the same time, the space between the mold 16 and the plate material P is similarly suctioned so as to have a predetermined degree of vacuum.

Thereafter, the ignition chamber 4, the dispersion chamber 3, the guide path 2, and the combustion chamber 1 are filled with a combustible gas having a substantially stoichiometric mixture by the fuel supply source 9 and the oxidant supply source 10.

After the setting is completed, the ignition plug 5 is operated by the ignition device 6. A detonation occurs in the ignition chamber 4 due to the ignition, and the flame propagates to the outer diameter portion 1A of the combustion chamber 1 through the dispersion chamber 3 and the guide path 2. At this time, since the paths of the plurality of guide paths 2 are set to be equal, the flames of the plurality of guide paths 2 simultaneously reach the outer diameter portion 1A.

In the combustion chamber 1, the flame proceeds from the outer diameter portion 1A to the center portion 1B. However, since the sectional area of the combustion chamber 1 gradually decreases toward the center, the pressure increases and the center portion 1B Then, the pressure becomes extremely high.

Since the end face of the elastic body G in the compression chamber 12 faces the opening of the center 1 B of the combustion chamber 1,
The high pressure is propagated from the end face into the elastic body, and the plate material P is pressed against the mold 16 at an equal pressure to perform molding.

Next, in order to take out the formed plate material P as a product from the processing device 13, the pressure chamber 12 and the processing device 13 are separated from each other. That is, each clamp member 21
Blocks 30A-3 for cylinders A-21D
When the cylinders 34 mounted at 0D are operated at the same time, the adjacent clamp members try to separate from each other by their retracted rods 35. Since these adjacent clamp members are guided only in the radial direction by the guides 24A to 24D, each clamp member 2
1A to 21D are equally spaced apart by moving radially outward. In addition, even if there is a slight difference in the operation of each cylinder device, the elastic members 32A to 32A
These differences are absorbed by D and each clamp member moves equally. Thus, the clamp is released,
The processing device 13 is appropriately separated from the pressure chamber 12 by a driving device (not shown), from which the product is taken out, and a plate to be processed next is set.

Thereafter, the cylinder is driven and clamped in the direction opposite to the above, the molding is performed again in the same manner as above, and then the product is taken out.

Next, a second embodiment of the present invention will be described with reference to FIG.

In the previous embodiment, the same cylinder was used for each clamp member, and was separately driven under the same conditions by individual driving sources. In this embodiment, the apparatus is simplified by using only one driving source. As shown in FIG. 6, in this embodiment, four cylinders for each clamp member are connected in series,
A loop is formed through the switching valve 41, and the operation is simultaneously performed under the same condition by the pressure from one driving source 40 connected to the switching valve 41.

In the above-described two embodiments, the clamp device is divided into four clamp members. However, the number of segments is not limited to four, but may be any number of segments as long as the number is plural.

[0040]

Since the present invention is configured as described above,
Since it does not use explosives as in the conventional bullet driving type and explosion type, it is a device that is not subject to restrictions on setting, and it is possible to continuously generate impact impact pressure and process products efficiently. The effect is obtained. And since it is possible to easily and safely obtain impact resilience, full-scale application in a wide industrial field such as a processing field has become possible. On the spot
The pressure chamber and the processing chamber are easily separated by releasing the clamp member
The efficiency of the machining operation is improved. Only
The operating direction of the cylinder device that holds the clamp member is
Since it is perpendicular to the combustion pressure propagation direction, the cylinder device impact pressure
There is no overload without direct addition. Also,
The hydraulic system does not need to be large even if the
And a standard commercially available cylinder.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged partial cutaway plan view of the clamping device of FIG. 1;

FIG. 3 is a front view of the clamp device of FIG. 2;

FIG. 4 is a sectional view of the clamp member and the guide taken along the line IV-IV in FIG. 2;

FIG. 5 is a sectional view taken along line VV in FIG. 2;

FIG. 6 is a system diagram of an apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combustion chamber 1A Outer diameter part 1B Central part 2 Guideway 4 Ignition chamber 5 Spark plug 12 Pressure chamber 13 Processing chamber (processing apparatus) 14, 15 Flange part 20 Clamp apparatus 21A, 21B, 21C, 21D Clamp member 34 Cylinder apparatus

────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Minoru Suzuki 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (56) References JP-A-4-351299 (JP, A) JP-A-4 -203510 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B21D 26/06 F16B 2/06

Claims (3)

(57) [Claims] 1. A combustion chamber having a sectional area decreasing from one end to the other end, an ignition chamber provided with a fuel supply and provided with an ignition plug, and one end of the combustion chamber branching from the ignition chamber and extending therefrom. A plurality of guide paths having the same path communicating with each other, a pressure chamber connected to an opening at the other end of the combustion chamber, which is a minimum cross-sectional area, and containing a liquid or an elastic body therein; and communicating with the pressure chamber. In the apparatus provided with a processing chamber, the pressure chamber and the processing chamber are connected to each other by a clamp device so as to be separable at a flange portion, and the clamp device has a clamp member divided into a plurality of pieces in a circumferential direction. A detonation pressure processing apparatus characterized in that a cylinder device is connected to the member so as to act in a direction perpendicular to the direction of propagation of the combustion pressure so that the flange portion can be clamped and released. 2. An outer surface of the flange portion has a tapered surface which is tapered, and an inner surface of the clamp member forms a taper surface which fits the outer surface of the flange portion, and the clamp member is movable in a radial direction by operation of the cylinder device. The detonation pressure processing device according to claim 1, wherein: 3. The detonation pressure according to claim 1, wherein a cylinder device is provided in each of the clamp members divided in the circumferential direction, and the cylinder devices are connected in series. Processing equipment.