GB955121A - Improvements in or relating to forging presses - Google Patents

Improvements in or relating to forging presses

Info

Publication number
GB955121A
GB955121A GB40792/61A GB4079261A GB955121A GB 955121 A GB955121 A GB 955121A GB 40792/61 A GB40792/61 A GB 40792/61A GB 4079261 A GB4079261 A GB 4079261A GB 955121 A GB955121 A GB 955121A
Authority
GB
United Kingdom
Prior art keywords
air
ram
ports
piston
bearings
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
GB40792/61A
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.)
B&S Massey and Sons Ltd
Original Assignee
B&S Massey and Sons Ltd
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 B&S Massey and Sons Ltd filed Critical B&S Massey and Sons Ltd
Priority to GB40792/61A priority Critical patent/GB955121A/en
Priority to US237679A priority patent/US3229496A/en
Publication of GB955121A publication Critical patent/GB955121A/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
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0064—Counterbalancing means for movable press elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

955,121. Forging presses. B. & S. MASSEY & SONS Ltd., J. FOSTER, and R. GRACE. Nov. 12, 1962 [Nov. 15, 1961], No. 40792/61. Heading B3H. A crank of eccentrically-operated forging press has its crank of eccentric shaft bearings 11 pre-loaded and its ram 16 balanced both statically and dynamically with the dynamic balancing being effective just prior to the application of pressure to the workpiece. The eccentric shaft 10 runs in phosphor bronze bearings 11 and is biased upwardly by an air cylinder 26 containing pistons 27 in tandem on a common rod 25 connected by a barrelled pin 24 to two housings 20 for ball races 18. On the other end of the shaft 10, which carries a brake 28, Fig. 3 (not shown), a single piston and a single connecting rod and ball race are used. Instead of the air cylinders, coil springs or packs of spring washers may be used. The ram 16 is balanced by a piston 38 in an air cylinder 37 having a ring of ports 40 from which the air can escape during descent of the ram. Just prior to engagement with the workpiece, the ports 40 are closed by the piston thereby trapping air in the cylinder to provide dynamic balance and take up any slackness in the big and small end bearings 14, 15. A valve 42 provides " inching " movement for the ram. The air escaping from ports 40 or valve 42 passes into an air chamber 41 in the press frame.
GB40792/61A 1961-11-15 1961-11-15 Improvements in or relating to forging presses Expired GB955121A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB40792/61A GB955121A (en) 1961-11-15 1961-11-15 Improvements in or relating to forging presses
US237679A US3229496A (en) 1961-11-15 1962-11-14 Forging presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40792/61A GB955121A (en) 1961-11-15 1961-11-15 Improvements in or relating to forging presses

Publications (1)

Publication Number Publication Date
GB955121A true GB955121A (en) 1964-04-15

Family

ID=10416628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40792/61A Expired GB955121A (en) 1961-11-15 1961-11-15 Improvements in or relating to forging presses

Country Status (2)

Country Link
US (1) US3229496A (en)
GB (1) GB955121A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07116897A (en) * 1993-10-26 1995-05-09 Sankyo Seisakusho:Kk Mechanical press
JPWO2005038291A1 (en) * 2003-10-20 2007-01-11 パスカルエンジニアリング株式会社 Balancer mechanism for rotating shaft
CN102921859B (en) * 2012-11-27 2017-03-29 孟红 Precise forging machine locking cylinder buffer gear

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1162125A (en) * 1914-12-17 1915-11-30 Pliny E Bassett Device for overcoming vibration of spindles.
US2141951A (en) * 1936-07-16 1938-12-27 William W Criley Air compressor attachment and brake for forging machines
US2767601A (en) * 1953-06-15 1956-10-23 Erie Foundry Company Counterbalance cylinder for forging presses and the like
US2970327A (en) * 1957-04-10 1961-02-07 Nat Machinery Co Header slide counter-balance apparatus

Also Published As

Publication number Publication date
US3229496A (en) 1966-01-18

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