NO892923L - CUTTING ELEMENTS FOR BORROWN AND BORN CROWN WITH SUCH ELEMENTS. - Google Patents

CUTTING ELEMENTS FOR BORROWN AND BORN CROWN WITH SUCH ELEMENTS.

Info

Publication number
NO892923L
NO892923L NO89892923A NO892923A NO892923L NO 892923 L NO892923 L NO 892923L NO 89892923 A NO89892923 A NO 89892923A NO 892923 A NO892923 A NO 892923A NO 892923 L NO892923 L NO 892923L
Authority
NO
Norway
Prior art keywords
elements
cutting
borrown
born
crown
Prior art date
Application number
NO89892923A
Other languages
Norwegian (no)
Other versions
NO892923D0 (en
Inventor
Kenneth William Jones
George Fyfe
Original Assignee
Smith International
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 US07/221,410 external-priority patent/US4858707A/en
Application filed by Smith International filed Critical Smith International
Publication of NO892923D0 publication Critical patent/NO892923D0/en
Publication of NO892923L publication Critical patent/NO892923L/en

Links

Landscapes

  • Milling Processes (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

Knast (30) med diamant, for rotasjonsborkrone (10) av skrapetypen, omfattende en tapp (32) med en indre ende og en i skjæreende. Skjæreenden har konveks eller sfærisk form, og er av polykrystallinsk diamantmateriale (40) . Det konvekse laget av diamant (42) er orientert i forhold til en akse i tappen med en negativ skrapevinkel fra O til omtrent 45°. Flere slike knaster (30) er montert i skjæreflaten (17) på en borkrone (10), for å skjære i en jordformasjon med minsket friksjon og god kjøling av den polykrystallinske diamant.Diamond cam (30) for scraping rotary drill bit (10), comprising a pin (32) having an inner end and a cutting end. The cutting end has a convex or spherical shape and is made of polycrystalline diamond material (40). The convex layer of diamond (42) is oriented relative to an axis of the pin with a negative scratching angle from 0 to about 45 °. Several such knobs (30) are mounted in the cutting surface (17) on a drill bit (10), to cut into a soil formation with reduced friction and good cooling of the polycrystalline diamond.

NO89892923A 1988-07-19 1989-07-17 CUTTING ELEMENTS FOR BORROWN AND BORN CROWN WITH SUCH ELEMENTS. NO892923L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/221,410 US4858707A (en) 1988-07-19 1988-07-19 Convex shaped diamond cutting elements

Publications (2)

Publication Number Publication Date
NO892923D0 NO892923D0 (en) 1989-07-17
NO892923L true NO892923L (en) 1990-01-22

Family

ID=22827709

Family Applications (1)

Application Number Title Priority Date Filing Date
NO89892923A NO892923L (en) 1988-07-19 1989-07-17 CUTTING ELEMENTS FOR BORROWN AND BORN CROWN WITH SUCH ELEMENTS.

Country Status (2)

Country Link
MX (1) MX168958B (en)
NO (1) NO892923L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106382098A (en) * 2016-11-25 2017-02-08 西南石油大学 Rotary tooth

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106382098A (en) * 2016-11-25 2017-02-08 西南石油大学 Rotary tooth

Also Published As

Publication number Publication date
NO892923D0 (en) 1989-07-17
MX168958B (en) 1993-06-15

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