GB1167433A - Improvements in or relating to Process of Cold Forming Sheet Components under Hydraulic Pressure - Google Patents

Improvements in or relating to Process of Cold Forming Sheet Components under Hydraulic Pressure

Info

Publication number
GB1167433A
GB1167433A GB1626267A GB1626267A GB1167433A GB 1167433 A GB1167433 A GB 1167433A GB 1626267 A GB1626267 A GB 1626267A GB 1626267 A GB1626267 A GB 1626267A GB 1167433 A GB1167433 A GB 1167433A
Authority
GB
United Kingdom
Prior art keywords
ram
links
cylinders
cylinder
cam
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
GB1626267A
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.)
CL JACQUEMARD ETS
Original Assignee
CL JACQUEMARD ETS
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 CL JACQUEMARD ETS filed Critical CL JACQUEMARD ETS
Publication of GB1167433A publication Critical patent/GB1167433A/en
Expired 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021—Deforming sheet bodies
    • B21D26/025—Means for controlling the clamping or opening of the moulds
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021—Deforming sheet bodies
    • B21D26/027—Means for controlling fluid parameters, e.g. pressure or temperature

Abstract

1,167,433. Stamping. ETS CL. JACQUEMARD. 10 April, 1967 [14 April, 1966], No. 16262/67. Heading B3Q. A press for cold forming sheet components A under hydraulic pressure comprises a die 26, 27, 28 at the upper end of a set of toggle links 5, a ram 9 mounted on the upper end of a second set of toggle links 11, and a cam 20 displaceable to compensate for changes in workpiece volume, the links 5, 11 being straight by the end of the stroke of the ram 9 when a further ram 2, controlled by the energy-source previously used to operate the links, effects high-pressure calibration of the workpiece. The links 5, 11 and the cam 20 are operated hydraulically, by cylinders 8, 17, 21. The die includes a lower section 28 attached to the ram 9, a divided upper section 26 suspended from a cylinder 18 and a bevel-ring 27 for closing the section 26. A table 4 for operating the ring 27 is carried by the links 5 and may also raise the plunger 9, by its top flange. At each side of the ram 9, on its support 10, is an abutment 23 for operating pistons in cylinders 22. A nut 16 in a fixed table 3 adjusts the links 11 and thus the stroke of the ram 9. Operation.-After filling the workpiece with a liquid, e.g. water, cylinder 8 is operated for raising table 4, to close the die-section 26, and for raising the ram by its top flange. When the top links 5 are in a straight, locking condition, pressure in cylinder 8 increases, and a valve directs oil to the cylinders 17, which filled as the ram was raised by the top links 5. The cylinders 17 now develop the forming pressure on the ram, and at this stage the abutments 23 engage the pistons in cylinders 22 for supplying the cylinder 21 and displacing the cam 20. A piston 19 operated by the cam, controls the volume of water in the workpiece during the forming operation. Abutment between the die sections 26, 28 terminates the ram-stroke when the links 11 are straight. The oil in cylinders 17 now communicates with a cylinder 24 to increase the fluid pressure in the blank, by means of a plunger 25. In a modification, cylinder 21 is operated by a pump which is regulated by a pickup controlled by the ram 9 over the final part of its stroke.
GB1626267A 1966-04-14 1967-04-10 Improvements in or relating to Process of Cold Forming Sheet Components under Hydraulic Pressure Expired GB1167433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR69047165A FR1498308A (en) 1966-04-14 1966-04-14 Improvement in the cold molding process, under hydraulic pressure, of sheet metal parts

Publications (1)

Publication Number Publication Date
GB1167433A true GB1167433A (en) 1969-10-15

Family

ID=9694575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1626267A Expired GB1167433A (en) 1966-04-14 1967-04-10 Improvements in or relating to Process of Cold Forming Sheet Components under Hydraulic Pressure

Country Status (2)

Country Link
FR (1) FR1498308A (en)
GB (1) GB1167433A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2744380A1 (en) * 1996-02-06 1997-08-08 Bas En Basset Soc Ind De Fabrication of metal components by hydraulic presses
ES2154105A1 (en) * 1997-07-07 2001-03-16 Bas En Basset Soc Ind De Fabrication of metal components by hydraulic presses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2744380A1 (en) * 1996-02-06 1997-08-08 Bas En Basset Soc Ind De Fabrication of metal components by hydraulic presses
ES2154105A1 (en) * 1997-07-07 2001-03-16 Bas En Basset Soc Ind De Fabrication of metal components by hydraulic presses

Also Published As

Publication number Publication date
DE1602434B2 (en) 1972-09-21
DE1602434A1 (en) 1970-01-08
FR1498308A (en) 1967-10-20

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees