GB1151996A - High Speed Forging Hammer Apparatus - Google Patents
High Speed Forging Hammer ApparatusInfo
- Publication number
- GB1151996A GB1151996A GB37261/66A GB3726166A GB1151996A GB 1151996 A GB1151996 A GB 1151996A GB 37261/66 A GB37261/66 A GB 37261/66A GB 3726166 A GB3726166 A GB 3726166A GB 1151996 A GB1151996 A GB 1151996A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- valve
- cylinder
- interconnected
- high pressure
- Prior art date
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/20—Drives for hammers; Transmission means therefor
- B21J7/46—Control devices specially adapted to forging hammers, not restricted to one of the preceding subgroups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/20—Drives for hammers; Transmission means therefor
- B21J7/22—Drives for hammers; Transmission means therefor for power hammers
- B21J7/24—Drives for hammers; Transmission means therefor for power hammers operated by steam, air, or other gaseous pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
1,151,996. Forging hammers. NIHON SEIKOSHO K.K. 19 Aug., 1966 [19 Aug., 1965], No. 37261/66. Heading B3H. A high speed forging hammer has a vertical cylinder 18 containing a piston 22 connected to the hammer tup 28, 30 and which divides the cylinder into upper and lower spaces 24, 25, which are interconnected in the fluid circuit to form a closed loop system. The lower space 25 is connected through conduit 69 with a low pressure reservoir 66 and the upper space 24 is connected through ports 48, annular chamber 46, valve 50 and conduit 77 with a high pressure reservoir 67. The two reservoirs are interconnected by a compressor 72 and the upper and lower cylinder spaces are interconnected by a bleed duct 42 in piston 22. In operation, the piston 22 in its upper position closes upon a seat 44. An extension 26 of the piston actuates a starting device 58, which opens valve 50 to admit high pressure gas into chamber 46. Valve 50 then closes and device 58 moves piston 22 from its seat, Fig. 3 (not shown), whereby the high pressure acts instantly in cylinder space 24 to effect the forging stroke, Fig. 4 (not shown). After impact the pressure in the cylinder spaces 24, 25 becomes equalized through bleed duct 42 whereby the piston 22 is raised by the upward thrust due to differential piston areas. The compressor 72. includes an unloader for setting the pressure and means are provided to make up for loss of fluid in the system. The starting device 58 may act as a sequence programming device and both the starting device and the valve 50 may be controlled mechanically, electrically or pneumatically. In another embodiment, Fig. 5 (not shown) the bleed duct 42 is replaced by external ducts (78) which may include a valve (80) for varying the lifting speed. The valve may be replaced by an orifice.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5013965 | 1965-08-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1151996A true GB1151996A (en) | 1969-05-14 |
Family
ID=12850798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37261/66A Expired GB1151996A (en) | 1965-08-19 | 1966-08-19 | High Speed Forging Hammer Apparatus |
Country Status (2)
Country | Link |
---|---|
US (1) | US3469400A (en) |
GB (1) | GB1151996A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3596562A (en) * | 1968-01-12 | 1971-08-03 | Nat Res Dev | Transducer for converting fluid pressure oscillations into mechanical oscillations |
US3824898A (en) * | 1972-04-12 | 1974-07-23 | R Pauliukonis | Energy conserving directional valve-cylinder combination |
US3818799A (en) * | 1972-10-30 | 1974-06-25 | Chambersburg Eng Co | Control system for an impact device |
JPS52100675A (en) * | 1976-02-19 | 1977-08-23 | Japan Steel Works Ltd:The | High speed forging hammer press |
GB1572349A (en) * | 1976-05-21 | 1980-07-30 | Bsp Int Foundation | Drop hammers |
JP2891024B2 (en) * | 1992-06-05 | 1999-05-17 | 日立工機株式会社 | Air compression device |
WO2010124840A1 (en) | 2009-04-27 | 2010-11-04 | Norgren Gmbh | A fluid operated actuator including a bleed port |
CN112108599A (en) * | 2020-08-19 | 2020-12-22 | 孙路涵 | Large-tonnage cold forging hydraulic press |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1897581A (en) * | 1933-02-14 | Alexandee monab | ||
US513601A (en) * | 1894-01-30 | Mechanism foe conteolling engines | ||
US2742879A (en) * | 1952-04-03 | 1956-04-24 | Voith Gmbh J M | Stabilizing device for governor systems, especially speed governor systems with yieldable follow-up mechanism |
US2902007A (en) * | 1957-05-31 | 1959-09-01 | Allis Chalmers Mfg Co | Cylinder piston assembly with pressure relieving means |
US2954755A (en) * | 1957-10-23 | 1960-10-04 | Ibm | Hydraulic positioning device |
US3115676A (en) * | 1960-11-23 | 1963-12-31 | American Beryllium Company Inc | High speed forging apparatus |
-
1966
- 1966-08-19 GB GB37261/66A patent/GB1151996A/en not_active Expired
-
1968
- 1968-06-03 US US736545A patent/US3469400A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3469400A (en) | 1969-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |