FR2281807A1 - Hole expansion for wall plug insertion - using air cooled tool with pivoted cutter - Google Patents

Hole expansion for wall plug insertion - using air cooled tool with pivoted cutter

Info

Publication number
FR2281807A1
FR2281807A1 FR7428640A FR7428640A FR2281807A1 FR 2281807 A1 FR2281807 A1 FR 2281807A1 FR 7428640 A FR7428640 A FR 7428640A FR 7428640 A FR7428640 A FR 7428640A FR 2281807 A1 FR2281807 A1 FR 2281807A1
Authority
FR
France
Prior art keywords
shank
air cooled
hole
plug insertion
hole expansion
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
FR7428640A
Other languages
French (fr)
Other versions
FR2281807B1 (en
Inventor
Andre Escriva
Roger Buisson
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.)
SVAMN
Original Assignee
SVAMN
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 SVAMN filed Critical SVAMN
Priority to FR7428640A priority Critical patent/FR2281807A1/en
Publication of FR2281807A1 publication Critical patent/FR2281807A1/en
Application granted granted Critical
Publication of FR2281807B1 publication Critical patent/FR2281807B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole
    • B23B51/0045—Drills for enlarging a hole by expanding or tilting the toolhead
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools

Landscapes

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

Abstract

A hole is first predrilled to depth and the shank of the opening out tool inserted down to a stop. The shank is rotated, using a power unit, and pushed forwards in the casing. This causes a cutting blade, normally in line with the shank, to pivot outwards and form the cavity. A blower turbine is driven by the rotating shank, the air passing down an axial hole to cool the blade and exhaust the dust. This hole also contains a fixed rod used to guide the cutting tool. A collar and spring control the arc of the blade.
FR7428640A 1974-08-12 1974-08-12 Hole expansion for wall plug insertion - using air cooled tool with pivoted cutter Granted FR2281807A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7428640A FR2281807A1 (en) 1974-08-12 1974-08-12 Hole expansion for wall plug insertion - using air cooled tool with pivoted cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7428640A FR2281807A1 (en) 1974-08-12 1974-08-12 Hole expansion for wall plug insertion - using air cooled tool with pivoted cutter

Publications (2)

Publication Number Publication Date
FR2281807A1 true FR2281807A1 (en) 1976-03-12
FR2281807B1 FR2281807B1 (en) 1977-07-08

Family

ID=9142492

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7428640A Granted FR2281807A1 (en) 1974-08-12 1974-08-12 Hole expansion for wall plug insertion - using air cooled tool with pivoted cutter

Country Status (1)

Country Link
FR (1) FR2281807A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572668A1 (en) * 1984-11-07 1986-05-09 Vacelet Claude Technical equipment allowing the shaping of a cylindrical assembly with set-in shoulder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663203A (en) * 1952-02-12 1953-12-22 Fried Armin Deburring, chamfering, and countersinking tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663203A (en) * 1952-02-12 1953-12-22 Fried Armin Deburring, chamfering, and countersinking tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572668A1 (en) * 1984-11-07 1986-05-09 Vacelet Claude Technical equipment allowing the shaping of a cylindrical assembly with set-in shoulder

Also Published As

Publication number Publication date
FR2281807B1 (en) 1977-07-08

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Legal Events

Date Code Title Description
ST Notification of lapse