GB1065022A - Improvements in or relating to methods and apparatus for combined stretch and die forming of metal stock - Google Patents

Improvements in or relating to methods and apparatus for combined stretch and die forming of metal stock

Info

Publication number
GB1065022A
GB1065022A GB614563A GB614563A GB1065022A GB 1065022 A GB1065022 A GB 1065022A GB 614563 A GB614563 A GB 614563A GB 614563 A GB614563 A GB 614563A GB 1065022 A GB1065022 A GB 1065022A
Authority
GB
United Kingdom
Prior art keywords
die
stretch
relating
methods
die forming
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
GB614563A
Inventor
Lionel William Law
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.)
Cyril Bath Co
Original Assignee
Cyril Bath Co
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 Cyril Bath Co filed Critical Cyril Bath Co
Priority to GB614563A priority Critical patent/GB1065022A/en
Priority to CH168064A priority patent/CH442200A/en
Publication of GB1065022A publication Critical patent/GB1065022A/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
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by pulling over a die

Abstract

1,065,022. Stretch-forming. CYRIL BATH CO. Feb. 24, 1964 [Feb. 15, 1963], No. 6145/63. Addition to 959,093. Headings B3E and B3Q. The method of stretch-forming described in the parent Specification is modified by using dies (5, 6, Figs. 1 and 2) part of the periphery of one of which is cut back or removed so that the other die only forms the workpiece at that point. The press may be as described in the parent Specification or in Specification 1,065,021. The bottom die (5) has a stepped-margin (13- 16) along three of its sides and a flat or slightly convex central area, the third side having a flat margin (22) or one which is a continuation of a convex central area. The top die has corresponding stepped margins along three of its sides bounded by a central recess (23) which extends to the edge of the die on its remaining side, which is parallel to the direction in which the blank is pre-tensioned. The top die may be made of separate narrow strips.
GB614563A 1963-02-15 1963-02-15 Improvements in or relating to methods and apparatus for combined stretch and die forming of metal stock Expired GB1065022A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB614563A GB1065022A (en) 1963-02-15 1963-02-15 Improvements in or relating to methods and apparatus for combined stretch and die forming of metal stock
CH168064A CH442200A (en) 1963-02-15 1964-02-12 Process for cold forming of sheet metal and device for carrying out the process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB614563A GB1065022A (en) 1963-02-15 1963-02-15 Improvements in or relating to methods and apparatus for combined stretch and die forming of metal stock

Publications (1)

Publication Number Publication Date
GB1065022A true GB1065022A (en) 1967-04-12

Family

ID=9809238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB614563A Expired GB1065022A (en) 1963-02-15 1963-02-15 Improvements in or relating to methods and apparatus for combined stretch and die forming of metal stock

Country Status (2)

Country Link
CH (1) CH442200A (en)
GB (1) GB1065022A (en)

Also Published As

Publication number Publication date
CH442200A (en) 1967-08-31

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