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GB2238736B - Drill bit or corehead manufacturing process - Google Patents

Drill bit or corehead manufacturing process

Info

Publication number
GB2238736B
GB2238736B GB9020260A GB9020260A GB2238736B GB 2238736 B GB2238736 B GB 2238736B GB 9020260 A GB9020260 A GB 9020260A GB 9020260 A GB9020260 A GB 9020260A GB 2238736 B GB2238736 B GB 2238736B
Authority
GB
United Kingdom
Prior art keywords
corehead
manufacturing process
drill bit
drill
bit
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 - Lifetime
Application number
GB9020260A
Other versions
GB2238736A (en
GB9020260D0 (en
Inventor
Neil Andrew Abercrombi Simpson
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.)
Astec Developments Ltd
Original Assignee
Astec Developments 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
Priority claimed from GB898921017A external-priority patent/GB8921017D0/en
Application filed by Astec Developments Ltd filed Critical Astec Developments Ltd
Priority to GB9020260A priority Critical patent/GB2238736B/en
Publication of GB9020260D0 publication Critical patent/GB9020260D0/en
Publication of GB2238736A publication Critical patent/GB2238736A/en
Application granted granted Critical
Publication of GB2238736B publication Critical patent/GB2238736B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/06—Casting in, on, or around objects which form part of the product for manufacturing or repairing tools
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Earth Drilling (AREA)
GB9020260A 1989-09-16 1990-09-17 Drill bit or corehead manufacturing process Expired - Lifetime GB2238736B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9020260A GB2238736B (en) 1989-09-16 1990-09-17 Drill bit or corehead manufacturing process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898921017A GB8921017D0 (en) 1989-09-16 1989-09-16 Drill bit or corehead manufacturing process
GB9020260A GB2238736B (en) 1989-09-16 1990-09-17 Drill bit or corehead manufacturing process

Publications (3)

Publication Number Publication Date
GB9020260D0 GB9020260D0 (en) 1990-10-31
GB2238736A GB2238736A (en) 1991-06-12
GB2238736B true GB2238736B (en) 1992-12-16

Family

ID=26295934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9020260A Expired - Lifetime GB2238736B (en) 1989-09-16 1990-09-17 Drill bit or corehead manufacturing process

Country Status (1)

Country Link
GB (1) GB2238736B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6454030B1 (en) 1999-01-25 2002-09-24 Baker Hughes Incorporated Drill bits and other articles of manufacture including a layer-manufactured shell integrally secured to a cast structure and methods of fabricating same
GB2384262B (en) * 1999-01-25 2003-09-03 Baker Hughes Inc Drill bits and other articles of manufacture including a layer-manufactured shell integrally secured to a cast structure and methods of fabricating same
ES2682594T3 (en) 2015-01-23 2018-09-21 Sandvik Intellectual Property Ab A rotary claw auger
CN116256193A (en) * 2021-12-10 2023-06-13 长庆工程设计有限公司 Geotechnical engineering sampling drill bit and manufacturing method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549211A (en) * 1975-06-12 1979-07-25 Merz Ag Method of making reamers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549211A (en) * 1975-06-12 1979-07-25 Merz Ag Method of making reamers

Also Published As

Publication number Publication date
GB2238736A (en) 1991-06-12
GB9020260D0 (en) 1990-10-31

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080917