FR2257419A1 - Bolster for deep drawing press - arranged to accommodate off-centre loads by flexible rod and piston - Google Patents

Bolster for deep drawing press - arranged to accommodate off-centre loads by flexible rod and piston

Info

Publication number
FR2257419A1
FR2257419A1 FR7442255A FR7442255A FR2257419A1 FR 2257419 A1 FR2257419 A1 FR 2257419A1 FR 7442255 A FR7442255 A FR 7442255A FR 7442255 A FR7442255 A FR 7442255A FR 2257419 A1 FR2257419 A1 FR 2257419A1
Authority
FR
France
Prior art keywords
piston
bolster
flexible rod
accommodate
loads
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.)
Granted
Application number
FR7442255A
Other languages
French (fr)
Other versions
FR2257419B1 (en
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.)
Umformtechnik Herbert Warnke VEB
Original Assignee
Umformtechnik Herbert Warnke VEB
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 Umformtechnik Herbert Warnke VEB filed Critical Umformtechnik Herbert Warnke VEB
Publication of FR2257419A1 publication Critical patent/FR2257419A1/en
Application granted granted Critical
Publication of FR2257419B1 publication Critical patent/FR2257419B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/02—Die-cushions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

Bolsters for presses, especially when used also as ejectors for finished parts may be subjected to eccentric loads which tend to cause tilting of the bolster piston within its guides with undesirable wear and rubbing loads. The load upon the bolster within the machine frame is transmitted by the flexible rod to the lower end of the piston whic slides in the pressure cylinder. applied at this point, below the point of application of pressure beneath the bolster piston the vertical load produces a minimal tilting load upon the piston. Alternative designs may use a ball joint at the lower end of the piston rod or ball joints at both ends.
FR7442255A 1973-11-19 1974-12-20 Bolster for deep drawing press - arranged to accommodate off-centre loads by flexible rod and piston Granted FR2257419A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD17472473A DD115288A3 (en) 1973-11-19 1973-11-19

Publications (2)

Publication Number Publication Date
FR2257419A1 true FR2257419A1 (en) 1975-08-08
FR2257419B1 FR2257419B1 (en) 1982-01-08

Family

ID=5493505

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7442255A Granted FR2257419A1 (en) 1973-11-19 1974-12-20 Bolster for deep drawing press - arranged to accommodate off-centre loads by flexible rod and piston

Country Status (4)

Country Link
DD (1) DD115288A3 (en)
DE (1) DE2451123A1 (en)
FR (1) FR2257419A1 (en)
SU (1) SU582994A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3046110A1 (en) * 1980-12-06 1982-07-29 SMS Schloemann-Siemag AG, 4000 Düsseldorf Floor-mounted forging press - has axial load transmitting bearing between ball cups allowing piston to tilt
DE4320236C1 (en) * 1993-06-18 1994-03-31 Schaefer Maschbau Wilhelm Hollow-body formation method from pipe - has shaping tappet axes and working positions adjustable in relation to each other

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124340A (en) * 1964-03-10 Hydraulic control for die pads in presses
US1782595A (en) * 1929-05-14 1930-11-25 Alfred J Amsler Hydraulic press particularly for testing materials
DE683544C (en) * 1935-05-18 1939-11-08 Ernst Herfel Setup on crank presses
US2584339A (en) * 1949-04-06 1952-02-05 Danly Mach Specialties Inc Hydropneumatic locking cushion for power presses
DE1261759B (en) * 1958-02-22 1968-02-22 Becker & Van Huellen Hydraulic press with press table guidance
DE7005237U (en) * 1970-02-14 1970-06-11 Beche Dipl Ing Hans HYDRAULIC FORGING PRESS.

Also Published As

Publication number Publication date
DE2451123A1 (en) 1975-05-22
FR2257419B1 (en) 1982-01-08
DD115288A3 (en) 1975-09-20
SU582994A1 (en) 1977-12-05
DE2451123C2 (en) 1987-02-19

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse