US3204710A - Enlarging roller cutter - Google Patents

Enlarging roller cutter Download PDF

Info

Publication number
US3204710A
US3204710A US178950A US17895062A US3204710A US 3204710 A US3204710 A US 3204710A US 178950 A US178950 A US 178950A US 17895062 A US17895062 A US 17895062A US 3204710 A US3204710 A US 3204710A
Authority
US
United States
Prior art keywords
tooth
base
roller cutter
pilot hole
roller
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
US178950A
Other languages
English (en)
Inventor
Bechem Karl-Gunter
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.)
J C SODING AND HALBACH
Original Assignee
J C SODING AND HALBACH
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 J C SODING AND HALBACH filed Critical J C SODING AND HALBACH
Application granted granted Critical
Publication of US3204710A publication Critical patent/US3204710A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers

Definitions

  • an enlarging roller cutter with one annular tooth disposed on a roller base member, charcterised in that the annular tooth is disposed at the forward free end of a roller base member, and a free surface is left behind the said annular tooth, said cutter being designed to widening or enlarg' ing a previously drilled or pilot hole.
  • the bottom of the drilled hole is of corresponding width, or the scarf is of a corresponding nature, it is pos sible that the annular tooth will inded cut in, but will not have enough force to throw the drilled annular material towards the starting hole.
  • the free surface of the roller base member behind the said annular tooth is made in at least substantially conical form with projecting extensions, so that this part of the base member rolls down onto the drilled annular material, which may if desired be left stationary, thus crushing it and moving it off towards the starting hole.
  • the free surface of the roller base member which is behind the annul-ar tooth is the surface of a prism.
  • this surface may also be made in the form of a smooth cone comprising extensions, preferably teeth, which may be interchangeable.
  • FIGURE 1 shows a part-sectioned lateral elevation of a roller cutter according to the invention.
  • FIGURES 2 and 3 show sections along the line IIII of two different forms of embodiment of a roller cutter according to the invention.
  • annular tooth 5 is screwed on to the forward end of a base member 4, which is fitted on to a stud 1 via ball and roller bearings 2, 3, if desired with the interposition of a bushing.
  • the annular tooth 5 works on the bottom 6 of a drilled hole, and cuts it back at the point 7. Normally, that part of the bottom of the drilled hole which extends inwards from the point 7 breaks off towards the starting hole after a certain depth of penetration has been attained.
  • a stir face 8 of the base member which follows behind the annular tooth 5 is of at least substantially conical form, so that this part works on the bottom of the drilled hole and crushes it, thus facilitating throw-off by the annular tooth.
  • FIGURE 2 shows this surface designed as a hexagon
  • FIGURE 3 shows extensions 9 fitted to the said surface.
  • the said extensions may be interchangeable, and it is furthermore expedient for them to be made of a more wear-resistant material than the base member 4.
  • Enlarging roller cutter for widening a pilot hole comprising a stud, a roller base mounted thereon, a single annular tooth attached at the forward end of said base, the diameter of said tooth being substantially greater than that of said base, the surface of said base having a plurality of longitudinal extensions providing rib-like edges adapted to crush material cut by said tooth, a free area is provided to the rear of said tooth to accommodate the material adopted to be cut away by said tooth and allow said material to fall into said pilot hole.
  • a cutter according to claim 1 characterized in that said base tapers rearwardly from said tooth.
  • Enlarging roller cutter for widening a .pilot hole comprising a stud, a roller base mounted thereon, a single annular tooth attached at the forward end of the base, the diameter of said tooth being substantially greater than that of said base, the surface of said base having a plurality of irregularities adapted to crush cut material, the area between said surface and the rearward projection of the tooth diameter constituting a free area to accommodate the material adapted to be cut away by said tooth and to allow said material to fall into said pilot hole, and characterized in that said base has a polygonal surface.
  • Enlarging roller cutter for widening a pilot hole comprising a stud, a roller base mounted thereon, a single annular tooth attached at the forward end of the base, the diameter of said tooth being substantially greater than that of said base, the surface of said base having a plurality of irregularities adapted to crush cut material, the area between said surface and the rearward projection of the tooth diameter constituting a free area to accommodate the material adapted to be cut away by said tooth and to allow said material to fall into said.
  • pilot hole and characterized in that said base has a non-circular surface.
  • Enlarging roller cutter for widening a pilot hole comprising a stud, a roller base mounted thereon, a single annular tooth attached at the forward end of the base, the diameter of said tooth being substantially greater than that of said base, the surface of said base having a plurality of irregularities adapted to crush cut material, the area between said surface and the rearward projection of the tooth diameter constituting a free area to accommodate the material adapted to be cut away by said tooth and to allow said material to fall into said pilot hole, and characterized in that said base has projections thereon.
  • Enlarging roller cutter for widening a pilot hole comprising a stud, a roller base mounted thereon, a single annular tooth attached at the forward end of the base, the diameter of said tooth being substantially greater than that of said base, the surface of said base: having a plurality of irregularities adapted to crush cut material, the area between said surface and the rearward projection of the tooth diameter constituting a free area to accommodate the material adapted to be cut away by said tooth and to allow said material to fall into said pilot hole, and
  • said base has projections thereon, said projections being more wear-resistant than said base.
  • Enlarging roller cutter for widening a pilot hole comprising a stud, a roller base mounted thereon, a single annular tooth attached at the forward end of the base, the diameter of said tooth being substantially greater than that of said base, the surface of said base having a plurality of irregularities adapted to crush cut material, the area between said surface and the rearward projection of the tooth diameter constituting a free area to accommodate the material adapted to be cut away by said tooth and to allow said material to fall into said pilot hole, and characterized in that the inner face of said tooth is threaded and is fitted onto corresponding threads on said base.

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)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
US178950A 1961-03-13 1962-03-12 Enlarging roller cutter Expired - Lifetime US3204710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB61648A DE1235237B (de) 1961-03-13 1961-03-13 Erweiterungsrollenmeissel

Publications (1)

Publication Number Publication Date
US3204710A true US3204710A (en) 1965-09-07

Family

ID=6973275

Family Applications (1)

Application Number Title Priority Date Filing Date
US178950A Expired - Lifetime US3204710A (en) 1961-03-13 1962-03-12 Enlarging roller cutter

Country Status (7)

Country Link
US (1) US3204710A (enrdf_load_stackoverflow)
BE (1) BE614760A (enrdf_load_stackoverflow)
CH (1) CH391622A (enrdf_load_stackoverflow)
DE (1) DE1235237B (enrdf_load_stackoverflow)
GB (1) GB980644A (enrdf_load_stackoverflow)
NL (1) NL275415A (enrdf_load_stackoverflow)
SE (1) SE220325C1 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326307A (en) * 1965-01-28 1967-06-20 Chicago Pneumatic Tool Co Rock bit roller cone
US3981370A (en) * 1972-06-02 1976-09-21 Hard Metals Limited Disc cutting unit for use on rock boring machines
US3982595A (en) * 1972-07-24 1976-09-28 Dresser Industries, Inc. Rock boring cutter with replaceable cutting elements
US4040493A (en) * 1976-05-13 1977-08-09 Dresser Industries, Inc. Rock boring cutter with thread-on replaceable cutting element
US4248314A (en) * 1979-05-29 1981-02-03 Hughes Tool Company Shaft drill bit with overlapping cutter arrangement
DE3702281A1 (de) * 1986-01-28 1987-07-30 Boart Int Ltd Scheibenschneidanordnung fuer gesteinsbearbeitungsmaschinen

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE187375C (enrdf_load_stackoverflow) *
US748206A (en) * 1902-09-04 1903-12-29 Wilhelm Mueller Tube-cleaner.
US1152151A (en) * 1911-04-03 1915-08-31 Harry R Decker Drill.
US1747909A (en) * 1922-05-29 1930-02-18 Universal Rotary Bit Company Rotary sectional bit
US1747908A (en) * 1923-08-11 1930-02-18 Universal Rotary Bit Company Rotary drill bit
US2241549A (en) * 1940-02-06 1941-05-13 Sr John W Hatcher Rotary bit
FR1252535A (fr) * 1960-04-01 1961-01-27 Bergwerksverband Gmbh Fleuret d'élargissement à galets, pour forages
US3016099A (en) * 1959-07-17 1962-01-09 Terminal Drilling And Producti Hole enlarger
US3046055A (en) * 1960-02-19 1962-07-24 Anderson Co Position-adjusting mechanism
GB960498A (en) * 1961-02-27 1964-06-10 Dietmar Soding Roller cutter for enlarging drilled holes

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE187375C (enrdf_load_stackoverflow) *
US748206A (en) * 1902-09-04 1903-12-29 Wilhelm Mueller Tube-cleaner.
US1152151A (en) * 1911-04-03 1915-08-31 Harry R Decker Drill.
US1747909A (en) * 1922-05-29 1930-02-18 Universal Rotary Bit Company Rotary sectional bit
US1747908A (en) * 1923-08-11 1930-02-18 Universal Rotary Bit Company Rotary drill bit
US2241549A (en) * 1940-02-06 1941-05-13 Sr John W Hatcher Rotary bit
US3016099A (en) * 1959-07-17 1962-01-09 Terminal Drilling And Producti Hole enlarger
US3046055A (en) * 1960-02-19 1962-07-24 Anderson Co Position-adjusting mechanism
FR1252535A (fr) * 1960-04-01 1961-01-27 Bergwerksverband Gmbh Fleuret d'élargissement à galets, pour forages
GB960498A (en) * 1961-02-27 1964-06-10 Dietmar Soding Roller cutter for enlarging drilled holes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326307A (en) * 1965-01-28 1967-06-20 Chicago Pneumatic Tool Co Rock bit roller cone
US3981370A (en) * 1972-06-02 1976-09-21 Hard Metals Limited Disc cutting unit for use on rock boring machines
US3982595A (en) * 1972-07-24 1976-09-28 Dresser Industries, Inc. Rock boring cutter with replaceable cutting elements
US4040493A (en) * 1976-05-13 1977-08-09 Dresser Industries, Inc. Rock boring cutter with thread-on replaceable cutting element
US4248314A (en) * 1979-05-29 1981-02-03 Hughes Tool Company Shaft drill bit with overlapping cutter arrangement
DE3702281A1 (de) * 1986-01-28 1987-07-30 Boart Int Ltd Scheibenschneidanordnung fuer gesteinsbearbeitungsmaschinen
US4793427A (en) * 1986-01-28 1988-12-27 Boart International Limited Disc cutters for rock working machines

Also Published As

Publication number Publication date
CH391622A (de) 1965-05-15
DE1235237B (de) 1967-03-02
GB980644A (en) 1965-01-13
SE220325C1 (enrdf_load_stackoverflow) 1968-05-07
BE614760A (fr) 1962-09-02
NL275415A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US3387673A (en) Rotary percussion gang drill
US4545443A (en) Means for drilling
US3564945A (en) Drill
US4669786A (en) Core breaker
US3204710A (en) Enlarging roller cutter
US2800820A (en) Driver tool for self tapping inserts, struds, screw bolts, and the like
US3011566A (en) Bearing wear indication for a roller bit
US3645642A (en) Taper drill
US2636254A (en) Method of making a rigid connection between a sleeve and a bushing
US2496421A (en) Drill bit
US2147926A (en) Four-cone bit
US2955810A (en) Cutting device for the continuous cutting of coal and the like
GB711628A (en) Improvements in or relating to mining machine heads
US3638740A (en) Raise drilling bit
US2104823A (en) Cutter flushing device
US2013839A (en) Roller drilling bit
US1955768A (en) Coal auger bit
US2268775A (en) Drill bit
US3388949A (en) Mining machine head
US1899771A (en) Blade type bit
US3170524A (en) Roller-type enlarging or reaming bit
US3418022A (en) Tunnel boring apparatus
DE905126C (de) Gesteinsbohrer, vorzugsweise mit Hartmetallschneiden
US2730335A (en) Air core drill
US2670170A (en) Pit prop