GB1109951A - Hammers - Google Patents

Hammers

Info

Publication number
GB1109951A
GB1109951A GB3804/66A GB380466A GB1109951A GB 1109951 A GB1109951 A GB 1109951A GB 3804/66 A GB3804/66 A GB 3804/66A GB 380466 A GB380466 A GB 380466A GB 1109951 A GB1109951 A GB 1109951A
Authority
GB
United Kingdom
Prior art keywords
valves
platens
liquid
impact
ducts
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
Application number
GB3804/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Langenstein and Schemann GmbH
Original Assignee
Langenstein and Schemann GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Langenstein and Schemann GmbH filed Critical Langenstein and Schemann GmbH
Priority to DE19661552835 priority Critical patent/DE1552835B2/en
Publication of GB1109951A publication Critical patent/GB1109951A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
    • 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
    • B21J7/34—Drives for hammers; Transmission means therefor for power hammers operating both the hammer and the anvil, so-called counter-tup

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)

Abstract

1, 109, 951. Impact hammers. LANGENSTEIN & SCHEMANN A.G. 27 Jan., 1966 [10 Feb., 1965], No. 3804/66. Heading B3H. In a double-drive impact press the platens 6, 7 are actuated on their working strokes by pressure gas and are retracted by pressure liquid in inner chambers 11, 12. The platens carry dies 8, 9 and are slidable in guides (50a), Fig. 2 (not shown), of the press frame (50). Pistons 4, 5 connected to the platens are subjected on their outer ends to continuous gas pressure in chambers 1, 2 connected to enlarged chambers 1b, 2b and supplied with gas from bottle 21. The inner chambers 11, 12 are connected by large area liquid links in ducts 14a, 14b and ports 13c to coupling cylinders 13a, 13b containing coupling pistons 15a, 15b connected to the opposite platens. Ducts 14a, 14b can be closed or opened by blocking valves 16a, 16b. These are held closed by pressure liquid in ducts 30, 31 controlled by a main control valve 33 operated by magnetic pilot valves 47, 48. Valve 47 causes the blockings valves 16a, 16b to be released for initiating an impact stroke; valve 48 effects closing of the blocking valves by pressure liquid. The liquid is supplied from reservoir 25 by pumps 23, 24. Auxiliary control valves 34 controlled by magnetic pilot valves 43, 44 are also provided for operating the press, particularly for providing a series of impacts which may be of different stroke lengths. These pilot valves 43, 44 are controlled by adjustable limit switches (58a), (58b), Fig. 5 (not shown), actuated by cams (59) on the platens. The switches are adjusted by pairs of rack-andpinion mechanisms (57), (60a). Control liquid for actuating the various valves is supplied to duct 39 by a separate pump 38. Inching control valves 32a, 32b are also provided. Setting screws 60b are used to adjust the degree of movement of the blocking valves 16a, 16b for varying the impact of the platens. In another embodiment, Figs. 3, 4, the coupling pistons 15a, 15b are stationary and their cylinders are carried by the platens.
GB3804/66A 1965-02-10 1966-01-27 Hammers Expired GB1109951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19661552835 DE1552835B2 (en) 1966-01-22 1966-12-15 COUNTERSHOT FORMING MACHINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0045183 1965-02-10

Publications (1)

Publication Number Publication Date
GB1109951A true GB1109951A (en) 1968-04-18

Family

ID=7100377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3804/66A Expired GB1109951A (en) 1965-02-10 1966-01-27 Hammers

Country Status (2)

Country Link
US (1) US3429174A (en)
GB (1) GB1109951A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT271143B (en) * 1967-10-09 1969-05-27 Langestein & Schemann Ag Machine for shaping a workpiece between two bears
CS149914B2 (en) * 1969-06-28 1973-08-23
DE1941806A1 (en) * 1969-08-16 1971-02-25 Eumuco Ag Fuer Maschb Forming machine for processing materials that can be deformed under heat, in particular heated metals
DE2057958B2 (en) * 1970-11-25 1978-10-12 Schloemann-Siemag Ag, 4000 Duesseldorf Hydraulically driven counterblow hammer
DE2221341A1 (en) * 1972-05-02 1973-11-15 Schloemann Ag HYDRAULIC FORGING MACHINE FOR FORGING STUDS OR THE SAME
US3822579A (en) * 1972-10-24 1974-07-09 V Kononenko High-speed counterstroke hammer
AT350879B (en) * 1976-10-14 1979-06-25 Wefoba COUNTER-ROCKING MACHINE
US4191045A (en) * 1978-07-11 1980-03-04 Abramov Valentin S Power hammer with opposed movement of ram and bolster
US4478566A (en) * 1982-02-18 1984-10-23 Rca Corporation Apparatus for injection molding an article
US4796428A (en) * 1983-01-17 1989-01-10 Oilgear Towler, Inc. Double-acting forging hammer and method
CN102489650B (en) * 2011-11-18 2014-02-05 中国重型机械研究院有限公司 Automatic liquid supplementing and draining system with liquid filling tank
US9573185B2 (en) * 2013-07-12 2017-02-21 The Boeing Company Apparatus and method for momentum-balanced forging

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583049A (en) * 1949-12-17 1952-01-22 Louvroil Montbard Aulnoye Sa Drop hammer
US2655002A (en) * 1952-09-11 1953-10-13 Hydropress Inc Liquid pressure transmission system
GB964008A (en) * 1960-02-11 1964-07-15 Hydraulik Gmbh Method and apparatus for the production of blanks from cast ingots
GB1112181A (en) * 1963-11-05 1968-05-01 Nat Res Dev Improvements in or relating to impulse-forming and like machines

Also Published As

Publication number Publication date
US3429174A (en) 1969-02-25

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