GB1316191A - Press tools - Google Patents

Press tools

Info

Publication number
GB1316191A
GB1316191A GB1316191DA GB1316191A GB 1316191 A GB1316191 A GB 1316191A GB 1316191D A GB1316191D A GB 1316191DA GB 1316191 A GB1316191 A GB 1316191A
Authority
GB
United Kingdom
Prior art keywords
pressure pad
coating
gap
epoxy resin
die member
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
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.)
Vauxhall Motors Ltd
Original Assignee
Vauxhall Motors 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 Vauxhall Motors Ltd filed Critical Vauxhall Motors Ltd
Publication of GB1316191A publication Critical patent/GB1316191A/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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/20—Making tools by operations not covered by a single other subclass

Abstract

1316191 Making press tools; stamping VAUXHALL MOTORS Ltd 6 Jan 1972 [7 Jan 1971] 786/71 Headings B3A and B3Q A method of making a pressure pad assembly for a press tool 2 comprises the steps of making a metal pressure pad 12 having runner and riser channels 22, 24, depositing a coating of readily removable material 20 on a die member 6 of the press tool, the coating having a thickness substantially the same as that of a metal workpiece to be pressed, locating the pressure pad adjacent the coated die member with a gap 26 therebetween, sealing the periphery of the gap, filling the gap with a resilient material 32, allowing the material to harden and adhere to the pressure pad, and removing the coating from the die member. The resilient material is an epoxy resin which hardens on exposure to the atmosphere and the coating 20 is a wax to which the epoxy resin does not adhere. A layer of adhesive 28 is applied to the pressure pad, prior to the pouring of epoxy resin through runner 22, to enable the epoxy resin to adhere to the pressure pad. The pressure pad, which is cast, is mounted in a frame portion 8, Fig. 1 (not shown), with an upper die (10) mounted above. The gap 26 between the pad and die member 6 is sealed by blocks 30 which are removed upon curing the resin. The wax coating is then removed, e.g. by melting.
GB1316191D 1971-01-07 1971-01-07 Press tools Expired GB1316191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB78671 1971-01-07

Publications (1)

Publication Number Publication Date
GB1316191A true GB1316191A (en) 1973-05-09

Family

ID=9710482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1316191D Expired GB1316191A (en) 1971-01-07 1971-01-07 Press tools

Country Status (1)

Country Link
GB (1) GB1316191A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480152A1 (en) * 1980-04-10 1981-10-16 Hartmann Patrice Die and matrix for sheet metal pressings - each use core plywood or resin impregnated timber lined thermosetting resin and are fabricated around model
EP0104269A1 (en) * 1981-03-20 1984-04-04 CIBA-GEIGY GmbH Spacing-layer for making moulds and master models and use thereof
US4598573A (en) * 1984-05-28 1986-07-08 Asea Aktiebolag Method of forming an object by pressing a blank in a press
GB2208619A (en) * 1987-08-15 1989-04-12 Austin Rover Group A sheet metal forming tool and methods of making and using same
US4935085A (en) * 1986-12-19 1990-06-19 Honda Giken Kogyo Kabushiki Kaisha Process for producing urethane die

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480152A1 (en) * 1980-04-10 1981-10-16 Hartmann Patrice Die and matrix for sheet metal pressings - each use core plywood or resin impregnated timber lined thermosetting resin and are fabricated around model
EP0104269A1 (en) * 1981-03-20 1984-04-04 CIBA-GEIGY GmbH Spacing-layer for making moulds and master models and use thereof
US4480006A (en) * 1981-03-20 1984-10-30 Ciba-Geigy Gmbh Distance sheeting for the construction of molds and models
US4598573A (en) * 1984-05-28 1986-07-08 Asea Aktiebolag Method of forming an object by pressing a blank in a press
US4935085A (en) * 1986-12-19 1990-06-19 Honda Giken Kogyo Kabushiki Kaisha Process for producing urethane die
GB2208619A (en) * 1987-08-15 1989-04-12 Austin Rover Group A sheet metal forming tool and methods of making and using same
GB2208619B (en) * 1987-08-15 1991-11-13 Austin Rover Group A sheet metal drawing tool and methods of making and using same.

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee