FR2271001A1 - Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped - Google Patents

Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped

Info

Publication number
FR2271001A1
FR2271001A1 FR7514788A FR7514788A FR2271001A1 FR 2271001 A1 FR2271001 A1 FR 2271001A1 FR 7514788 A FR7514788 A FR 7514788A FR 7514788 A FR7514788 A FR 7514788A FR 2271001 A1 FR2271001 A1 FR 2271001A1
Authority
FR
France
Prior art keywords
studs
hardmetal
cutting face
angled
rim
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.)
Granted
Application number
FR7514788A
Other languages
French (fr)
Other versions
FR2271001B1 (en
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.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
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 Fried Krupp AG filed Critical Fried Krupp AG
Publication of FR2271001A1 publication Critical patent/FR2271001A1/en
Application granted granted Critical
Publication of FR2271001B1 publication Critical patent/FR2271001B1/fr
Granted 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
    • E21B10/56—Button-type inserts
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)

Abstract

Powered drill for holing concrete consists of the drill head (2) and a shaft which has a double spiral groove for removal of drillings. The head is tooled in hardmetal studs (6) over its cutting face (5). The studs on the outside diameter should stand at angles between 10 and 45 deg. and are cone or cup shaped at the tips. The drill shaft material should be so heat treated and the studs selected in terms of quality or so dimensioned as to give equal wear characteristics on shaft and stud tools.
FR7514788A 1974-05-15 1975-05-13 Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped Granted FR2271001A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742423511 DE2423511A1 (en) 1974-05-15 1974-05-15 DRILL WITH CONVEYOR

Publications (2)

Publication Number Publication Date
FR2271001A1 true FR2271001A1 (en) 1975-12-12
FR2271001B1 FR2271001B1 (en) 1979-03-30

Family

ID=5915594

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7514788A Granted FR2271001A1 (en) 1974-05-15 1975-05-13 Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped

Country Status (2)

Country Link
DE (1) DE2423511A1 (en)
FR (1) FR2271001A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540355C2 (en) * 1985-11-14 1996-01-11 Duss Maschf Drill for rotary drilling
DE3919264C2 (en) * 1989-06-13 1997-01-23 Duss Maschf Rotary impact drill for a hand-operated drill
DE102012212042A1 (en) * 2012-07-10 2014-01-30 Robert Bosch Gmbh Rotary drill bit e.g. machine-driven drill bit for drilling of e.g. reinforced concrete, has cutting element that is composed of two welding points which is cohesively welded on surface portion of surface area of drill sleeve

Also Published As

Publication number Publication date
DE2423511A1 (en) 1975-11-27
FR2271001B1 (en) 1979-03-30

Similar Documents

Publication Publication Date Title
GB1463785A (en) Spade drill bit
ATA502381A (en) Milling tool for under-reaming of masonry - uses annular arris cutting head mounted on trunnion which is offset on driven shaft
GB916197A (en) Drill for dental purposes or the like
US5061127A (en) Drill bit with concave spurs and having triangular center point with vee grooves
FR2271001A1 (en) Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped
JPS57127608A (en) Cutting tool
US3808937A (en) Screw head
FR2271000A1 (en) Masonry drill with centring bit - hardmetal studs on cutting face and bit face, angled at diameter rims
GB1421680A (en) Drinking glasses
GB732124A (en) New or improved dental instruments
ES437919A1 (en) Twist drills
GB1383090A (en) Drill
ES402404A2 (en) Continuous boring or cutting machine
GB1239142A (en)
JPS5590213A (en) Drill
GB1312008A (en) Adjustable chucking reamer
GB1144331A (en) Improvements in and relating to drills
GB1401564A (en) Reamer-drill
JPS5633214A (en) Drill
ES376348A2 (en) Tool with sweeping movement for a continuous boring or cutting machine
GB806427A (en) Improvements in or relating to the drilling of hard brittle materials
CA935075A (en) Method of increasing the life of carbide cutting tools
SU986742A1 (en) Cutting method
GB1349520A (en) Rotary hand tools
GB1380301A (en) Cutting tool

Legal Events

Date Code Title Description
ST Notification of lapse