CN1043326C - An improvement in a bulging press machine - Google Patents
An improvement in a bulging press machine Download PDFInfo
- Publication number
- CN1043326C CN1043326C CN93107710A CN93107710A CN1043326C CN 1043326 C CN1043326 C CN 1043326C CN 93107710 A CN93107710 A CN 93107710A CN 93107710 A CN93107710 A CN 93107710A CN 1043326 C CN1043326 C CN 1043326C
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- China
- Prior art keywords
- press
- pressure
- slide block
- sill
- crank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
To obtain the same performance with a mechanical means as with a hydraulic pressure, in a process such as bulging in which a metal die requires opening and closing widely for attaching and detaching a workpiece as well as pressurizing with much force after being closed and for which mostly hydraulic pressure is conventionally employed for obtaining the pressurization. For a lower die 10 fixed on a press bed 5 and an upper die 9 fixed on a crown frame 1, press frames (1, 2, 3) are vertically moved with a frame cylinder 4, which is provided between the press bed 5 and the lower frame 3, to attach and detach the workpiece. A wedge 8, 8 is pushed in from left and right between a sliding material 7, which is fixed on the press frame 5 with a piston rod 4a of the frame cylinder 4 extended, and a sliding material 6 which is fixed on the lower frame 3 via a guide spacer 11; and a large pressurization is obtained between the upper die 9 and the lower die 10. The device is small-sized, inexpensive and fast in operation.
Description
The present invention relates to a kind of bulging press machine.
Middle part for the protruding pipe of drum will act on tube inner wall internally with high pressure.
According to traditional forcing press, will insert a mould in the pipe, between tube inner wall and mould, place a fuse of forming by elastomer, artificial rubber for example, by apply hydraulic pressure to the pipe two ends pressure is acted on the pipe middle part, and, also a roller or metal mold to be inserted.
Any in these forcing presses and the method all is workpiece, and promptly pipe is placed on up and down between the mould, then tube inner wall is pressurizeed.
Just because of this, must separate mould up and down a bit, make pipe can be between upper and lower mould easy operating, pipe just can be taken away from mould easily, or pipe can be clamped firmly when applying enough pressure to pipe.For this reason, a lot of hydraulic presses are widely used in the protruding processing of drum of pipe.
Though the application hydraulic press applies high pressure in pipe be possible,, to compare with the traditional forcing press that produces uniform pressure, its expense is very high, and, being difficult to maintenance, operating rate is also low.
Using the producible maximum pressure of hydraulic press is 50000 tons, but the maximum pressure of punching machine has only 5～8000 tons.
By these comparisons and analysis above, hydraulic press is suitable for producing high pressure, but its price height, maintenance and operating rate can cause other trouble.
For the middle part of the protruding pipe of drum, often to use up to 2000Kg/cm
2Internal pressure.
Should note, used internal high pressure, just be not used for rousing the tube wall of protruding processed pipe, make its distortion and enter the inner chamber of metal mold, the inwall of pipe and metal mold interacts, the pressure about being applied on the mould also needs pressure, so should carry out the needed external force of plastic deformation greater than pipe.
Mention as top institute, also have a problem is how to produce high pressure with punching machine with low price, making up and down, mould can force together and not be opened.
For example, if use a crank press, theoretically,, can produce the pressure of infinite height at the bottom dead centre-stroke curve of pressure., according to crank press, crank is supported by bearing.One vertical movably is pressed in crank and links to each other by a connecting rod with carriage on the patrix.Necessary, the hardness that increases connecting rod and crank overcomes the high pressure that produces around the bottom dead centre, in order to avoid connecting rod and crank are damaged by the high pressure that is produced.
The crank arm that opens and closes these moulds is long more, and its hardness is just more little.Improve hardness, crank press is whole can to become big.
Put into workpiece, exactly pipe is put into mould or taken out the protruding pipe that processes of quilt drum from mould, just should be little with a kind of power, and the big crank press of stroke, in operation so just being necessary with the especially big high-power mould up and down of pushing down.
In order to overcome above-mentioned prior art problems, main purpose of the present invention provides a kind of improved bulging press machine, and it can produce high mechanical pressure with cheap price, is easy to maintenance and operating rate height.
According to one aspect of the present invention, adopted a driver that opens and closes metal mold, a pressure applying means and a voussoir, in view of the above, can open mould up and down by an enough big driver of stroke, workpiece can be put into and take out easily, and apply high pressure by pressure applying means.
According to another aspect of the present invention, adopted the driver of an opening and closing metal mold, pressure applying means and voussoir, this driver can provide high pressure and little stroke by pressure applying means and voussoir thus to mould low pressure.
More specifically be, for achieving the above object, the invention provides a kind of bulging press machine, it comprises:
A press, it is installed slidably along four root posts, the upper and lower side that four root posts pass four holes, the column at four jiaos of places of the press square nut that has been threaded;
An entablature, it utilizes the flange integral installation to the top of column, and flange is located between the upper end of the lower surface of entablature and column;
A sill, its integral body is placed in the bottom of column;
Go up metal pattern for one, it be installed between two parties and integrally entablature below;
A following metal pattern, it is installed on the press between two parties and integrally, in the face of last metal pattern;
One infeeds pressure-feeding apparatus in the pipe fitting to be processed with hydraulic oil; It is characterized in that also comprising:
A device that is used to open and close metal pattern and following metal pattern, it comprises that a plurality of integral body are placed in the hydraulic cylinder below the press, each hydraulic cylinder has the piston rod of the upper surface of an ejection sill;
A pressure applying means, it is installed between press and the sill, it comprises a pair of be horizontally disposed with and each other at the relative upper and lower slide block of vertical direction, insert a pair of slidably voussoir between them, slide block has sliding surface respectively, top shoe integral body be placed in press below, and sliding block utilizes a guiding cushion block integral body to be placed on the sill, the guiding cushion block is arranged between sill and the sliding block; The sliding surface of top shoe is flat, and with include entablature, column and sill machine direction and meet at right angles at the interior whole pressure machine frame that moves back and forth; The sliding surface of glide determining have a pair of towards the Center of Pressure (inclined plane that narrows down, they engage with the lower surface of the interworking of voussoir; Two voussoirs are connected with a pair of slide block respectively slidably, they integrally be arranged on press below; A pair of Bel's crank links to each other with lug, and they integrally are arranged on the both sides of press; The middle part of each Bel's crank is hinged on the axle that is kept by lug; One end of Bel's crank connects by connecting rod and slider pivot, and its other end utilizes bearing pin and bar head pivot to connect; One end of Bel's crank connects by connecting rod and slider pivot, and its other end utilizes bearing pin and bar head pivot to connect.
Opposite with traditional forcing press, because bulging press machine of the present invention is without the hydraulic oil mould of extruding, so just there is no need with having had the hydraulic oil device of very big pressure and capacity.This will make forcing press have reasonable prices.
Thus, promptly use the hydraulic oil device back and forth to promote pressure applying means, the hydraulic means of a low capacity is also just enough, and this can make periodic maintenance become easy.
Just because of this, might become forcing press as far as possible little and the saving floor space.
Below in conjunction with the description of drawings embodiments of the invention.
Fig. 1 is a bulging press machine front view of the present invention, and part is cut open;
Fig. 2 is Fig. 1 from the sectional view that the line II-the II place is cutd open;
Fig. 3 is a detailed front view to the mould pressure applying means;
Fig. 4 be Fig. 1 from the sectional view that the line IV-the IV place is cutd open, the bulging salient mounting that is arranged on the mould of expression is put.
With reference to Fig. 1, press 10 is fixed on (not shown) on the ground of factory, and four vertical Post 16 is distributed on foursquare four angles, and can move both vertically and pass hole 10a, hole 10a On press 10, column 16 tops are fixed on the lower end of entablature 12 by flange 16a On the face, flange 16a is arranged between the top of entablature 12 lower surfaces and column 16, Respectively with the bolt (not shown), 4 hole 14a are passed in the bottom of column on the column 16, 14a is on sill 14.
Particularly specifically nut 18, are tightened in respectively column extension about 16 On the screw thread.
Therefore, entablature 12 and sill 14 are to connect to one by column 16 can transport up and down The integral body of moving pressure machine frame, and press 10 can move up and down along column 16.
Upper metal pattern 20 integrally is contained in center, entablature 12 lower surface, lower metal pattern 22 integrally are contained in center, press 10 upper surface, and facing to upper metal pattern 20.
On press 10 lower surfaces, some hydraulic cylinders 24 integrally are housed, each hydraulic pressure The driven plunger 24a of cylinder 24 links to each other with the upper surface of sill 14.
A pair of upper sliding block 26 and 28, equal horizontal positioned, and in vertical direction relative Place, have a pair of voussoir 30,30 to insert slidably between them between them, from Fig. 1 and 3 can see that voussoir 30,30 can back and forth pass in and out Center of Pressure C, and, on Sliding block 26 and 28 has respectively the face of sliding up and down 26a and 28a.
Upper sliding surface 26a is flat, it with comprise entablature 12, column 16 and bottom rail Beam 14 meets at right angles in the direction of motion of the interior pressure machine frame that moves up and down. Another The aspect, lower slider face 28a has pair of angled face 28a, and 28a is more to Center of Pressure C Close then more narrow, so the lower surface of voussoir 30 also has inclined plane 30a, 30a, more To Center of Pressure C near then more narrow, such inclined plane 30a, 30a with regard to and the inclined plane 28a, 28a comes in contact.
Fig. 3 is the front view of the pressure applying means of a metal pattern, with the perspective of Fig. 1 Direction is identical. A pair of voussoir 30,30 and a pair of slide block 32 and 34 connect together respectively And can slide together, they do as a whole again all below press 10.
For straight line guiding element 36, be that a dovetail slide-and-guide body or a wear-resistant linearity are led To body.
A pair of Bel (Bell) crank 38 and 40 and lug 42 connect together, lug 42 is At the two ends of press 10, the middle part of each Bel's crank is with the fixed axis 44 of lug 42 Be axle, an end 38a of Bel's crank 38 is pivotally by connecting rod 46 and slide block 30 connect, and other end 38b is connected with bar head 52 by the mode of axle 44 with pivot.
One end 40a of Bel's crank 40 pivotally connects with slide block 34 by connecting rod 48 Connect, other end 40b is connected with bar head 52a by the mode of bearing pin 44 with pivot.
Fig. 4 be among Fig. 1 by the sectional view that the line IV-the IV place cuts open, it represented the drum protruding The pressure of device applies situation.
A protruding forming tank 20a of essential drum and the protruding grooving 22a of another drum are internally Central Symmetry ground has consisted of the up and down relative inner surface of metal mold 20,22.
A workpiece, just pipe fitting W be placed on upper and lower mould 20 and 22 in the middle of, with it Intermediate drum protuberance position centre groove 20a and 22a place are clipped in the pipe of processing unit (plant) 60 In the middle of two extensions of 60a, 60b, 60 insert cylinder type opening 25 slidably, The 25th, be formed in up and down between the mould 20 and 22, and also in its both sides. So just Make its extension and two end in contact of pipe fitting W.
Hydraulic oil P has 2000Kg/cm
2Pressure, it by pressure-feeding apparatus 62 respectively by in passage 60a and the 60b ascending pipe W.Pressure-feeding apparatus 62 is connected with a driving lead screw shaft 64, and this lead screw shaft 64 connects together with a variable speed electric motors, particularly 66 again.Drive lead screw shaft 64 by bearing 77 supportings, do not vertically move in order to make the driving lead screw shaft, driving on the lead screw shaft has plus thread 64R and left-hand thread 64L.
Another slide block 72 has a threaded hole 72a, and left-hand thread 64L can screw in screwed hole 72a, and base part 72b is placed in the straight line guide plate 74 and can slides.
The back portion of processing unit (plant) 60 links to each other with the piston rod 82a of hydraulic cylinder 82, and 82 are fixedly mounted on the press 10.
As can be seen from this figure, hydraulic cylinder 82 links to each other with the output of servo valve 84, and connects into its pipeline and can make guiding valve 80a consistent with the operative orientation of piston rod 82a.
Embodiments of the invention will provide hereinafter.
According to pressure applying means PF of the present invention, if push the piston rod 56a of U type hydraulic cylinder 56 to fixing in advance workpiece, pipe fitting W just, then Bel's crank 38 and 40 will be that pivot is driven the inhour rotation with 44, by connecting rod 46 and 48 slide block on the straight line guiding element 36 32 and 34 is retracted, thereby voussoir 30,30 is pulled out between slide block 26 and 28.
The piston rod 24a of hydraulic cylinder 24 is retreated, so be contained in the entablature 12 on the pressure machine frame, column 16 and sill 14 just rise, and metal pattern 20 is gone up in permission and following metal pattern 22 is opened, and W is put in the mould so that workpiece is pipe.
As shown in Figure 4, when the piston 82a of hydraulic cylinder 82 is in going-back position, so that make processing unit (plant) 60 also be in going-back position.
When workpiece is pipe W when putting between the upper and lower mould 20,22, piston rod 24a longitudinally advances, and mounted pressure machine frame is descended, so workpiece is that pipe W is forced to be between these moulds, in order that open slide block 26 and 28 (seeing shown in Fig. 1 arrow A).
Retreated its piston rod 56a when the forked type seat hydraulic cylinder 56 of driving pressure bringing device PF drives, reciprocating movement rod 54 is moved to the left, and Bel's crank 38,40 with pivot 44,44 when changeing clockwise as its center of rotation, and guide runner 32,34 is by connecting rod 46,48 advance to center C, so, the voussoir between slide block 26 and 28 30,30 is pushed ahead, and make voussoir and sliding surface 26a, the 28a contact.
In this case, connecting rod 46 and 48 and the linking arm 38a of Bel's crank 38 and 40 and 40a near straight line, so the linking arm 38a of connecting rod 46,48 and Bel's crank 38,40, the angle [alpha] between the 40a
1And α
2Just become big gradually, slide block 32 is driven as a toggle with 34, and make voussoir 30,30 clamp-on between slide block 32 and 34, like this, slide block 28 will be pushed downwards, be pressed downwardly onto on the pressure machine frame powerfully, simultaneously, push upper and lower mould 20 and 22 (shown in Fig. 1 arrow B) forcefully.
Even the angle pressure machine frame of a suitable sliding surface 28a is stressed to remove to open mould 20 and 22 up and down as selecting this moment, and when producing thrust to slide block 28 thus, voussoir 30,30 can not withdrawn yet.
Therefore, after the buncher 66 of pressure-feeding apparatus 62 started, the hydraulic oil with pressure P will enter workpiece pipe W inside by passage 60b.
Drive lead screw shaft 64, rotation under buncher 66 drives can be pushed slide block 70 and 72 to center C, makes them approaching.
Along with slide block 70 and 72 center C to forcing press move, guiding valve 84a also can move to same direction, hydraulic oil PI just can enter in the cylinder barrel 82c of hydraulic cylinder 82 by interior fluent valve 84a and hole 84b, like this, piston 82a just and processing unit (plant) 60 move to the center C of forcing press together, make processing unit (plant) 60 longitudinally push workpiece pipe W.
According to this method, the hydraulic oil with high pressure P enters among the workpiece pipe W by processing unit (plant) 60 powerfully, and protruding distortion will be roused in the middle part of workpiece pipe W, and tube wall can touch recessed cavity 20a and the inwall of 22a.
In this operation, only the brute force that applied of the wedge shape power of applying pressure bringing device is upper and lower mould 20 with opened in 22 minutes, and voussoir 30,30 pushes the strength of preventing upper and lower mould 20 and 22 to open.
When the piston rod 56a of U type hydraulic cylinder 56 release, pressure B will disappear, and voussoir 30,30 just withdraws from from slide block 26 and 28, thereby makes the piston rod 24a withdrawal of hydraulic cylinder 24, opens metal pattern 20,22 up and down.
Along with above-mentioned motion, buncher 66 is driven makes processing unit (plant) 60 withdrawals with counter-rotating.
This embodiment of the present invention, be illustrated by a pressure applying means PF, this device comprises a pair of Bel's crank 38 and 40, they are connected with 48 by reciprocal connecting rod 46, work as toggle, simultaneously promoting a pair of voussoir 30,30 with identical speed again makes the two ends of workpiece pipe W can obtain same pressure simultaneously.
In addition, a sychronisation that is driven by lead screw shaft 64 is used for servo valve 84, comes the hydraulic cylinder of driving pressure bringing device PF.
Pressure applying means PF is not only limited to this embodiment of the present invention, Bel's crank of pressure applying means PF is to be driven by reciprocal connecting rod between the acting device and toggle, also can transmit necessary pressure to workpiece W two ends by the hydraulic jack with known sychronisation conversely.
For pressure-feeding apparatus 62, a toggle is arranged between slide block 70 and 72, it comprises Bel's crank and voussoir 30,30.But like this may be very suitable, drive synchronous hydraulic cylinder by driving lead screw shaft 64 usefulness servo valves, by the Driven by Hydraulic Cylinder slide block, or by having the Driven by Hydraulic Cylinder slide block 70 and 72 of known sychronisation.
In this embodiment, slide block 70 and 72 is used for guiding voussoir 30,30; But many needle-like rollers are arranged on the slide rail between voussoir 30 and 30, come the sliding surface 26a and the 28a of guide slides 26 and 28.
According to the present invention, metal mold 20,22nd up and down, compressed by hydraulic cylinder 24.Press 10 and last metal pattern 20 are being supported, and slide block 26 and 28 is respectively on the parts of each pressure machine frame.Following metal pattern 22 moves up and down with pressure machine frame, and voussoir 30 and 30 is clamp-oned between slide block 26 and 28, and metal mold 20,22 is forced together with high pressure.
Even have the brute force resembling in the bulging convex process to remove to open metal mold 20 and 22 up and down, also can be suppressed by very strong resistance.
Do not leave scope of the present invention because can do some changes in application, we think that illustrates in full content recited above and the accompanying drawing all should be understood that a kind of illustrative, rather than limit.
Claims (1)
1. bulging press machine, it comprises:
A press (10), it is installed slidably along four root posts (16), the upper and lower side that four root posts (16) pass four holes (10a), the column (16) at the square four jiaos of places of press (10) nut (18) that has been threaded;
An entablature (12), it utilizes flange (16a) integral installation to the top of column (16), and flange (16a) is located between the upper end of the lower surface of entablature (12) and column (16);
A sill (14), its integral body is placed in the bottom of column (16);
Go up metal pattern (20) for one, it be installed between two parties and integrally entablature (12) below;
A following metal pattern (22), it is installed on the press (10) between two parties and integrally, in the face of last metal pattern (20);
One with hydraulic oil (P) infeed pressure-feeding apparatus in the pipe fitting to be processed (W) (62,60a, 60b); It is characterized in that also comprising:
A device that is used to open and close metal pattern (20) and following metal pattern (22), it comprises that a plurality of integral body are placed in the following hydraulic cylinder (24) of press (10), and each hydraulic cylinder (24) has the piston rod (24a) of the upper surface of an ejection sill (14);
A pressure applying means (PF), it is installed between press (10) and the sill (14), it comprises a pair of be horizontally disposed with and each other at the relative upper and lower slide block (26 of vertical direction, 28), insert a pair of slidably voussoir (30 between them, 30), slide block (26,28) has sliding surface (26a respectively, 28a), top shoe (26) integral body be placed in press (10) below, and sliding block (28) utilizes guiding cushion block (a 92) integral body to be placed on the sill (14), guiding cushion block (92) is arranged between sill (14) and the sliding block (28); The sliding surface (26a) of top shoe (26) is flat, and with include entablature (12), column (16) and sill (14) and meet at right angles at the machine direction of the interior whole pressure machine frame that moves back and forth; The sliding surface (28a) of sliding block (28) have a pair of towards the Center of Pressure (inclined plane that narrows down (and 28a, 28b), (30a 30a) engages in the lower surface of the interworking of they and voussoir (30,30); Two voussoirs (30,30) are connected with a pair of slide block (32,34) respectively slidably, they integrally be arranged on press (10) below; A pair of Bel's crank (38,40) links to each other with lug (42,42), and they integrally are arranged on the both sides of press (10); The middle part of each Bel's crank is hinged on the axle (44) that is kept by lug (42); One end (38a) of Bel's crank (38) connects by connecting rod (46) and slide block (32) pivot, and its other end (38b) utilizes bearing pin (44) and bar head (52) pivot to connect; One end (40a) of Bel's crank (40) connects by connecting rod (48) and slide block (34) pivot, and its other end (40b) utilizes bearing pin (44) and bar head (52a) pivot to connect.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4163640A JPH0818156B2 (en) | 1992-05-29 | 1992-05-29 | Press machine |
| JP163640/92 | 1992-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1095013A CN1095013A (en) | 1994-11-16 |
| CN1043326C true CN1043326C (en) | 1999-05-12 |
Family
ID=15777789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93107710A Expired - Fee Related CN1043326C (en) | 1992-05-29 | 1993-05-28 | An improvement in a bulging press machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0818156B2 (en) |
| KR (1) | KR100188297B1 (en) |
| CN (1) | CN1043326C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6892560B2 (en) * | 2000-06-16 | 2005-05-17 | Toyota Jidosha Kabushiki Kaisha | Mold clamping apparatus and mold clamping method |
| JP4698013B2 (en) * | 2000-10-27 | 2011-06-08 | 株式会社アマダ | Press drive device |
| ES2318843T3 (en) * | 2007-05-15 | 2009-05-01 | C.R.F. Societa Consortile Per Azioni | DEVICE AND PROCEDURE FOR THE HYDROFORMATION OF METAL ELEMENTS. |
| CN101569901B (en) * | 2009-06-15 | 2011-01-05 | 合肥海德数控液压设备有限公司 | Lifting hydrostatic press |
| CN104062133B (en) * | 2014-06-09 | 2017-10-31 | 珠海格力电器股份有限公司 | Comprehensive adjustment test fixture frame |
| CN114918308B (en) * | 2022-06-17 | 2023-08-29 | 昆山精诚得精密五金模具有限公司 | Hydraulic bulging machine for metal tube machining |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3064559A (en) * | 1959-11-19 | 1962-11-20 | Ross B Treer | Press |
| SU806201A1 (en) * | 1978-12-06 | 1981-02-23 | Проектный И Научно-Исследовательскийинститут "Донецкий Промстройниипроект" | Apparatus fr shaping cells in sheet works |
| CN86207234U (en) * | 1986-10-16 | 1987-09-09 | 王德顺 | Acupoint massager |
| US4766808A (en) * | 1986-04-04 | 1988-08-30 | Uniflex-Hydraulic Gmbh | Radial press with v-shaped press jaws |
| GB2205500A (en) * | 1987-06-06 | 1988-12-14 | Hilda Andrews | Massaging aid |
| CN2091671U (en) * | 1991-05-07 | 1992-01-01 | 陈龙宝 | Holographic medical masseur |
| CN1061546A (en) * | 1990-11-17 | 1992-06-03 | 太原重型机械学院 | The hydraulic expanding-forming device of annular work piece |
-
1992
- 1992-05-29 JP JP4163640A patent/JPH0818156B2/en not_active Expired - Lifetime
-
1993
- 1993-05-21 KR KR1019930008816A patent/KR100188297B1/en not_active IP Right Cessation
- 1993-05-28 CN CN93107710A patent/CN1043326C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3064559A (en) * | 1959-11-19 | 1962-11-20 | Ross B Treer | Press |
| SU806201A1 (en) * | 1978-12-06 | 1981-02-23 | Проектный И Научно-Исследовательскийинститут "Донецкий Промстройниипроект" | Apparatus fr shaping cells in sheet works |
| US4766808A (en) * | 1986-04-04 | 1988-08-30 | Uniflex-Hydraulic Gmbh | Radial press with v-shaped press jaws |
| CN86207234U (en) * | 1986-10-16 | 1987-09-09 | 王德顺 | Acupoint massager |
| GB2205500A (en) * | 1987-06-06 | 1988-12-14 | Hilda Andrews | Massaging aid |
| CN1061546A (en) * | 1990-11-17 | 1992-06-03 | 太原重型机械学院 | The hydraulic expanding-forming device of annular work piece |
| CN2091671U (en) * | 1991-05-07 | 1992-01-01 | 陈龙宝 | Holographic medical masseur |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100188297B1 (en) | 1999-06-01 |
| CN1095013A (en) | 1994-11-16 |
| KR930023153A (en) | 1993-12-18 |
| JPH0818156B2 (en) | 1996-02-28 |
| JPH05329693A (en) | 1993-12-14 |
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