GB1276331A - Drill bit and method and apparatus for making same - Google Patents

Drill bit and method and apparatus for making same

Info

Publication number
GB1276331A
GB1276331A GB4541269A GB4541269A GB1276331A GB 1276331 A GB1276331 A GB 1276331A GB 4541269 A GB4541269 A GB 4541269A GB 4541269 A GB4541269 A GB 4541269A GB 1276331 A GB1276331 A GB 1276331A
Authority
GB
United Kingdom
Prior art keywords
blank
insert
inserts
held
jointing
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
GB4541269A
Inventor
J D Ditson
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand 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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Priority to GB4541269A priority Critical patent/GB1276331A/en
Publication of GB1276331A publication Critical patent/GB1276331A/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
    • B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

1276331 Making rock drills; jointing by forging; jointing by shrinking INGERSOLLRAND CO 15 Sept 1969 45412/69 Headings B3A B3H and B3V [Also in Division E1] A button insert 50 is secured in a drill bit blank 60 by forcing the insert into the surface of the blank so that it is securely held with a part protruding. The surface of the blank around the insert is forced inwards after insertion. The blank may be heated to 1700‹ F. so that it tightly grips the insert on cooling. The inserts are made of tungsten carbide and the bit is for a percussive drill. The insert may be tapered, Figs. 5 and 6 (not shown). The apparatus to force the inserts 50 into the blank 60 comprises an hydraulically operated ram 13 with an enlarged lower end 20 formed with a pin 31 to force the insert into the blank and an anvil 26 to squeeze the blank on to the insert. The inserts are fed along a pipe 35 by a spring-urged rod 37 and the front insert is held by a ring 42 in the anvil 26 until it is pushed out by the pin 31. The blank 60 is held in a jig 70 whose forward edge 73 is bevelled to allow tilting so that inserts can be pressed into the edge 61 of the blank. The apparatus may be adapted to press or hammer a set of inserts simultaneously.
GB4541269A 1969-09-15 1969-09-15 Drill bit and method and apparatus for making same Expired GB1276331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4541269A GB1276331A (en) 1969-09-15 1969-09-15 Drill bit and method and apparatus for making same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4541269A GB1276331A (en) 1969-09-15 1969-09-15 Drill bit and method and apparatus for making same

Publications (1)

Publication Number Publication Date
GB1276331A true GB1276331A (en) 1972-06-01

Family

ID=10437118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4541269A Expired GB1276331A (en) 1969-09-15 1969-09-15 Drill bit and method and apparatus for making same

Country Status (1)

Country Link
GB (1) GB1276331A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850557A1 (en) * 1977-11-29 1979-05-31 Itt Ind Gmbh Deutsche METHOD OF CONNECTING RING-SHAPED ELEMENTS
EP0054250A2 (en) * 1980-12-17 1982-06-23 SORTIMAT Creuz & Co. GmbH Apparatus and process for fixing a hard metal plate onto a twist drill
GB2174434A (en) * 1985-05-01 1986-11-05 Gkn Forgings Ltd Cutting tool for mineral mining
US5746281A (en) * 1993-06-14 1998-05-05 Oy Robit Rocktools Ltd. Method for mounting hard metal buttons in a drill bit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850557A1 (en) * 1977-11-29 1979-05-31 Itt Ind Gmbh Deutsche METHOD OF CONNECTING RING-SHAPED ELEMENTS
EP0054250A2 (en) * 1980-12-17 1982-06-23 SORTIMAT Creuz & Co. GmbH Apparatus and process for fixing a hard metal plate onto a twist drill
EP0054250A3 (en) * 1980-12-17 1983-09-28 SORTIMAT Creuz & Co. GmbH Apparatus and process for fixing a hard metal plate onto a twist drill
GB2174434A (en) * 1985-05-01 1986-11-05 Gkn Forgings Ltd Cutting tool for mineral mining
US5746281A (en) * 1993-06-14 1998-05-05 Oy Robit Rocktools Ltd. Method for mounting hard metal buttons in a drill bit

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Legal Events

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