GB1195448A - Improvements in or relating to Machines for Deforming Sheet Metal - Google Patents

Improvements in or relating to Machines for Deforming Sheet Metal

Info

Publication number
GB1195448A
GB1195448A GB35700/68A GB3570068A GB1195448A GB 1195448 A GB1195448 A GB 1195448A GB 35700/68 A GB35700/68 A GB 35700/68A GB 3570068 A GB3570068 A GB 3570068A GB 1195448 A GB1195448 A GB 1195448A
Authority
GB
United Kingdom
Prior art keywords
conduit
ram
valve
pressure
correcting device
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
GB35700/68A
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.)
Promecam Sisson Lehmann SA
Original Assignee
Promecam Sisson Lehmann SA
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 Promecam Sisson Lehmann SA filed Critical Promecam Sisson Lehmann SA
Publication of GB1195448A publication Critical patent/GB1195448A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0272—Deflection compensating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/24—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
    • B30B15/245—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam using auxiliary cylinder and piston means as actuating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Control Of Presses (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1,195,448. Deforming metal sheets. PROMECAM SISSON-LEHMANN. 26 July, 1968 [26 July, 1967; 11 June, 1968], No. 35700/68. Heading B3E and B3W. A machine for deforming sheet metal such as a shearing machine or a folding press comprises a fixed bolster 2, a moving bolster 3 and a fixed frame 1 having a pump unit for supplying fluid pressure for operating at least one thrust ram 4, the movement of the moving bolster 3 being controlled by a synchronizing device which maintains the bolsters in a predetermined relative angular position by the action of sensors 5 which detect angular deviations from this predetermined angular position and actuate a pressure medium distributor valve 7 which feeds the synchronizing device with fluid pressure, the sensor including a correcting device 26 which is actuable to modify the action of the valve 7 so as to compensate differences in elastic deformations under load of lateral walls 1c and 1d which support the bolsters. An inclination of the moving bolster 3 in the counterclockwise direction will create a high pressure in conduit 22a of the sensor circuit and a low pressure in conduit 23a. This pressure difference is transmitted to the correcting device 26 and forces piston 28 downwards. The movement of the piston 28 acting through a cable 10 pulls the valve 7 downwards so that conduit 23c is connected to discharge while conduit 22c is connected to the feed supply of the thrust rams 4. The two sensor rams which have opposite directions of action, then produce a couple in the clockwise direction. Microswitches 34 and 35 control the correcting device 26 so that the operation of the machine is stopped as soon as the difference in the deformations of side walls 1c and 1d reach a predetermined limit. A modification of the correcting device comprises a ram 38a, which is fed by conduit 23c, and ram 38b fed by conduit 22c which are connected by a pivotable lever 39. The pressure difference, created by counterclockwise inclination of the moving bolster 3 in the conduits 22c and 23c causes a lever 40 connected to the ram 38b to pull the valve 7 downwards via the cable 10.
GB35700/68A 1967-07-26 1968-07-26 Improvements in or relating to Machines for Deforming Sheet Metal Expired GB1195448A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR115702A FR1539817A (en) 1967-07-26 1967-07-26 Hydraulic machine for deformation of metal sheets
FR154510A FR95083E (en) 1967-07-26 1968-06-11 Hydraulic machine for deformation of sheet metals.

Publications (1)

Publication Number Publication Date
GB1195448A true GB1195448A (en) 1970-06-17

Family

ID=26178403

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35700/68A Expired GB1195448A (en) 1967-07-26 1968-07-26 Improvements in or relating to Machines for Deforming Sheet Metal

Country Status (14)

Country Link
US (1) US3550425A (en)
AT (1) AT286747B (en)
BE (1) BE717792A (en)
CH (1) CH516355A (en)
DK (1) DK137949B (en)
ES (1) ES356803A1 (en)
FR (2) FR1539817A (en)
GB (1) GB1195448A (en)
IE (1) IE32208B1 (en)
IL (1) IL30366A (en)
LU (1) LU56479A1 (en)
NL (1) NL156963B (en)
NO (1) NO128751B (en)
SE (1) SE355512B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808845A (en) * 2020-12-19 2021-05-18 爱驰威汽车零部件（盐城）有限公司 Side impact balancing device for automobile shell parts

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518232B1 (en) * 1969-09-12 1976-03-15
US3914975A (en) * 1970-12-25 1975-10-28 Amada Co Ltd Hydraulic press brake
US3702558A (en) * 1971-09-09 1972-11-14 Niagara Machine & Tool Works Deflection compensating press brake die support
DE2525391C3 (en) * 1975-06-06 1986-10-23 Peddinghaus, Rolf, Dipl.-Ing., 5828 Ennepetal Pressure medium-operated scissors, punch or the like. machine
PT68274A (en) * 1978-07-11 1978-08-01 A A Ribeiro De Almeida Device applicable to presses and metal bending presses to syncronize the movements of the hydraulic cylinders and control slider cross member
DE2919012A1 (en) * 1979-05-11 1980-11-20 Schloemann Siemag Ag OVERLOAD PROTECTION ON HYDRAULIC FORMING PRESSES, IN PARTICULAR SHEET FORMING PRESSES
US4366699A (en) * 1980-05-26 1983-01-04 Amada Company, Limited Hydraulic presses
US4321819A (en) * 1980-07-23 1982-03-30 Dyneer Corporation Press construction
FR2507507B1 (en) * 1981-06-16 1986-07-04 Promecan Sisson Lehmann DEVICE FOR BOMBING A TOOL HOLDER OF A FOLDING PRESS OR THE LIKE
US4580434A (en) * 1983-11-14 1986-04-08 Cincinnati Incorporated Deflection compensating assembly for a press brake
US5067340A (en) * 1988-05-05 1991-11-26 Macgregor Donald C Precision press brake
CH680773A5 (en) * 1989-09-11 1992-11-13 Beyeler Machines Sa
FR2655907B1 (en) * 1989-12-19 1993-07-30 Plazenet Jean HYDRAULIC BENDING PRESS WITH MOBILE LOWER APRON.
DE4235971C1 (en) * 1992-10-26 1994-04-07 M & S Brugg Ag Brugg Press brake
JPH08108957A (en) * 1994-10-07 1996-04-30 Shikoku Kakoki Co Ltd Tape connecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808845A (en) * 2020-12-19 2021-05-18 爱驰威汽车零部件（盐城）有限公司 Side impact balancing device for automobile shell parts

Also Published As

Publication number Publication date
FR95083E (en) 1970-06-19
DK137949B (en) 1978-06-12
AT286747B (en) 1970-12-28
ES356803A1 (en) 1970-06-01
DE1752860B2 (en) 1975-07-17
NL6810532A (en) 1969-01-28
IE32208B1 (en) 1973-05-16
SE355512B (en) 1973-04-30
NO128751B (en) 1974-01-07
CH516355A (en) 1971-12-15
DE1752860A1 (en) 1971-10-07
IL30366A (en) 1972-07-26
US3550425A (en) 1970-12-29
NL156963B (en) 1978-06-15
LU56479A1 (en) 1968-10-24
FR1539817A (en) 1968-09-20
IL30366A0 (en) 1968-09-26
BE717792A (en) 1968-12-16
IE32208L (en) 1969-01-26
DK137949C (en) 1978-11-06

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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