GB924786A - Improvements in cutting tool manufacture - Google Patents

Improvements in cutting tool manufacture

Info

Publication number
GB924786A
GB924786A GB1155561A GB1155561A GB924786A GB 924786 A GB924786 A GB 924786A GB 1155561 A GB1155561 A GB 1155561A GB 1155561 A GB1155561 A GB 1155561A GB 924786 A GB924786 A GB 924786A
Authority
GB
United Kingdom
Prior art keywords
bar
billet
shank
cutting
fluted
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
GB1155561A
Inventor
William Henry Eric Gullick
Charles Wendell Clark
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.)
CLEVELAND TWIST DRILL (GREAT BRITAIN) Ltd
CLEVELAND TWIST DRILL GREAT BR
Daniel Doncaster and Sons Ltd
Original Assignee
CLEVELAND TWIST DRILL (GREAT BRITAIN) Ltd
CLEVELAND TWIST DRILL GREAT BR
Daniel Doncaster and Sons 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 CLEVELAND TWIST DRILL (GREAT BRITAIN) Ltd, CLEVELAND TWIST DRILL GREAT BR, Daniel Doncaster and Sons Ltd filed Critical CLEVELAND TWIST DRILL (GREAT BRITAIN) Ltd
Priority to GB1155561A priority Critical patent/GB924786A/en
Publication of GB924786A publication Critical patent/GB924786A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
    • B21K5/04—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes twisting-tools, e.g. drills, reamers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B21C23/147—Making drill blanks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

924,786. Making fluted cutting-tools; extruding. CLEVELAND TWIST DRILL (GREAT BRITAIN) Ltd., and DANIEL DONCASTER & SONS Ltd. Feb. 27, 1962 [March 29, 1961], No. 11555/61. Classes 83 (2) and 83 (4). A helically fluted cutting-tool such as a drill, is made by extruding a billet 3 completely through a die 2 to form a fluted bar, cutting the bar into separate lengths and welding each length to a shank of different material. The billet 3 is of heated high-speed tool steel and a graphite plug 4 is inserted between the billet and the press ram 6. Each cut length of extruded bar may be heat-treated and machined before butt-welding to a shank of low carbon steel. Alternatively, the shank may have a groove of the required shape to receive the end of the bar.
GB1155561A 1961-03-29 1961-03-29 Improvements in cutting tool manufacture Expired GB924786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1155561A GB924786A (en) 1961-03-29 1961-03-29 Improvements in cutting tool manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1155561A GB924786A (en) 1961-03-29 1961-03-29 Improvements in cutting tool manufacture

Publications (1)

Publication Number Publication Date
GB924786A true GB924786A (en) 1963-05-01

Family

ID=9988389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1155561A Expired GB924786A (en) 1961-03-29 1961-03-29 Improvements in cutting tool manufacture

Country Status (1)

Country Link
GB (1) GB924786A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223909A1 (en) * 1985-10-31 1987-06-03 Fried. Krupp Gesellschaft mit beschränkter Haftung Extrusion die for manufacturing a drill blank of hard metal or ceramics
GB2218931A (en) * 1986-01-18 1989-11-29 Krupp Gmbh An extrusion tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223909A1 (en) * 1985-10-31 1987-06-03 Fried. Krupp Gesellschaft mit beschränkter Haftung Extrusion die for manufacturing a drill blank of hard metal or ceramics
GB2218931A (en) * 1986-01-18 1989-11-29 Krupp Gmbh An extrusion tool
GB2218931B (en) * 1986-01-18 1990-07-04 Krupp Gmbh Extrusion tool

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