GB1174295A - Improvements in or relating to High Speed Impact Forming Machines. - Google Patents
Improvements in or relating to High Speed Impact Forming Machines.Info
- Publication number
- GB1174295A GB1174295A GB01874/67A GB1187467A GB1174295A GB 1174295 A GB1174295 A GB 1174295A GB 01874/67 A GB01874/67 A GB 01874/67A GB 1187467 A GB1187467 A GB 1187467A GB 1174295 A GB1174295 A GB 1174295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- ram
- frame
- rods
- cylinder
- 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
- B21J7/22—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)
- Presses And Accessory Devices Thereof (AREA)
- Forging (AREA)
Abstract
1,174,295. Power hammers. KOBE-STEEL Ltd. 14 March, 1967 [14 March, 1966], No. 11874/67. Heading B3H. A high-speed hammer comprises a ram 2 with a piston 4 in a cylinder 3 formed in the upper wall of a gas-pressure chamber 1 through which the ram passes, conduits 5, 6 connecting the upper part of the cylinder through a valve 7 to the chamber and crank drive 12 to raise the ram after impact and a drive for a cam 20 to operate the valve in timed relation with the movement of the ram. The ram has a spindle extension 8 with a head 9 above a supporting frame 10 which is connected to the crank drive by rods 13. The chamber 1 is formed in a movable frame 10a slidable in guides 10b of a fixed frame 10c. The movable frame is mounted on an air cushion 26. Hydraulic-operated stopper pistons 17 have piston-rods 14 which abut the movable frame 10a when the ram is raised by the supporting frame 10 to separate the forming dies 28. In operation the valve 7 is opened to allow the pressurized gas from the chamber to enter above the piston 4. Since the upper face of the piston is larger than its lower face the piston starts to descend until it emerges from the cylinder 3 whereupon the pressurized gas acts on the piston to cause it to descend at high speed, Fig. 2 (not shown). Since the area of the upper wall of the chamber 1 is greater than that of its lower wall the movable frame is oscillated as soon as the piston 4 emerges from the cylinder 3. The stopper piston-rods 14 remain retracted. After forming the supporting frame 10 is raised by the crank and abuts the head 9 to raise the ram. Just prior to this abutment the piston-rods 14 are moved to engage the movable frame 10g so that the dies 28 can be separated. When the piston 4 is fully within the cylinder 3, Fig. 4 (not shown), the valve is closed. The frame 10 is raised further by the cranks and the stopper units 16, 17 act as hydraulic cushions, Fig. 5 (not shown). The frame 10 is then lowered and the piston-rods 14 push the movable frame 10g downwards to its equilibrium position and the rods 14 are retracted. The hammer is now ready for a further cycle of operations. In an alternative embodiment, Fig. 8 (not shown), the stopper unit 16, 17 serves solely to limit the movement of the movable frame and separate hydraulic piston cylinder assemblies (29)-(31) are provided between the rod (13) and the supporting frame (10). These assemblies act as hydraulic cushions separate from the stopper unit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1604866 | 1966-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1174295A true GB1174295A (en) | 1969-12-17 |
Family
ID=11905676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB01874/67A Expired GB1174295A (en) | 1966-03-14 | 1967-03-14 | Improvements in or relating to High Speed Impact Forming Machines. |
Country Status (5)
Country | Link |
---|---|
US (1) | US3427856A (en) |
AT (1) | AT269601B (en) |
DE (1) | DE1627430A1 (en) |
FR (1) | FR1514617A (en) |
GB (1) | GB1174295A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CS149914B2 (en) * | 1969-06-28 | 1973-08-23 | ||
US3898834A (en) * | 1969-12-18 | 1975-08-12 | Kurt H Kramer | High energy forging press |
US3867833A (en) * | 1973-05-04 | 1975-02-25 | Anatoly Sergeevich Morgolenko | Metal-working machine |
US4341137A (en) * | 1979-10-02 | 1982-07-27 | The Warner & Swasey Company | Material forming apparatus |
FR2500767A1 (en) * | 1981-02-27 | 1982-09-03 | Voron Proizv | Trigger mechanism for high speed hammer - has control valve set-shifting by double acting solenoid element operated by two spring-connected arms |
US4587831A (en) * | 1985-05-20 | 1986-05-13 | Yen Wen Hsiung | Press machine |
IT1204521B (en) * | 1986-04-11 | 1989-03-03 | Amada Co Ltd | BENDING MACHINE FOR SHEETS |
JP2008534879A (en) * | 2005-04-01 | 2008-08-28 | モルフィック テクノロジーズ アクティエボラグ (ピーユービーエル) | Shock absorber for movable tools |
CN102000941B (en) * | 2010-10-26 | 2012-07-11 | 湖南汉龙水电设备有限公司 | Repair method of breakage of air hammer bent axle crank |
JP2012218018A (en) * | 2011-04-07 | 2012-11-12 | Honda Motor Co Ltd | Press working apparatus |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3158048A (en) * | 1960-10-25 | 1964-11-24 | Warner Swasey Co | Impact machine |
US3103136A (en) * | 1960-11-28 | 1963-09-10 | Warner Swasey Co | High energy impact machine |
US3194049A (en) * | 1961-10-19 | 1965-07-13 | Eumuco Ag Fur Maschb | Top-pressure forging hammer |
US3105414A (en) * | 1961-12-26 | 1963-10-01 | Gen Dynamics Corp | High energy impactor apparatus |
US3354693A (en) * | 1963-07-24 | 1967-11-28 | Kobe Steel Ltd | High energy rate forming machine |
US3352143A (en) * | 1965-04-02 | 1967-11-14 | Leo C Bollar | Impact apparatus |
-
1967
- 1967-03-09 US US621940A patent/US3427856A/en not_active Expired - Lifetime
- 1967-03-14 GB GB01874/67A patent/GB1174295A/en not_active Expired
- 1967-03-14 DE DE19671627430 patent/DE1627430A1/en active Pending
- 1967-03-14 AT AT247467A patent/AT269601B/en active
- 1967-03-14 FR FR98764A patent/FR1514617A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AT269601B (en) | 1969-03-25 |
DE1627430A1 (en) | 1970-11-05 |
US3427856A (en) | 1969-02-18 |
FR1514617A (en) | 1968-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |