US3596724A - Cutting roller - Google Patents

Cutting roller Download PDF

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Publication number
US3596724A
US3596724A US735431A US3596724DA US3596724A US 3596724 A US3596724 A US 3596724A US 735431 A US735431 A US 735431A US 3596724D A US3596724D A US 3596724DA US 3596724 A US3596724 A US 3596724A
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US
United States
Prior art keywords
crown
flank surfaces
inserts
rib
insert
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
US735431A
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English (en)
Inventor
Karl Gunther Bechem
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 HALBACK KG
Original Assignee
J C SODING AND HALBACK KG
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 DE19671533703 external-priority patent/DE1533703B1/de
Application filed by J C SODING AND HALBACK KG filed Critical J C SODING AND HALBACK KG
Application granted granted Critical
Publication of US3596724A publication Critical patent/US3596724A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement
    • 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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts

Definitions

  • Buell McElya et a1 Primary Examiner-David H. Brown Attorney-Owen. Wickersham & Erickson ABSTRACT! A cutting roller for use in rock-boring equipment and having two circumferentially extending parallel cutting ribs. Each rib is provided with a series of wear-resistant exchangeable inserts which protect the crown and flank surfaces of the rib against wear.
  • the invention relates to a cutting roller or bit for use in rock-boring equipment, of the type having at least one circumferentially extending cutting rib.
  • the or each cutting rib is provided around its periphery with a series of exchangeable inserts of wear-resistant material, each insert being received within a recess and having working edges which are flush with or extend beyond the crown and flank surfaces of the rib with which it is associated.
  • FIG. 1 shown a cutting roller provided with two cutting ribs, viewed in the radial direction;
  • FIG. 2 shows an axial partial section showing the ribs of the roller of FIG. I, with the roller in the working position and shown inclined to the borehole axis;
  • FIG. 3 shows an axial partial section through a cutting rib and insert prior to the fixing of the insert in its recess
  • FIG. 4 shows a section taken on the line IV-IV of FIG. 3;
  • FIG. 5 is a view similar to FIG. 4 but shows a different embodiment of insert
  • FIG. 6 shows a further embodiment of insert
  • FIG. 7 is an axial section through a further embodiment of cutting roller
  • FIG. 8 is a fragmentary view of a portion of cutting roller like that of FIG. 7 but somewhat modified.
  • FIG. 9 is a view similar to FIG. 3 of a modified form of insert flush with the rib.
  • the cutting roller represented in front elevation in FIG. 1 has a roller body R, whose outer periphery is provided with two parallel circumferentially extending cutting ribs 1.
  • Fastened in each of the cutting ribs 1 is a series of circumferentially spaced radially projecting highly wear-resistant inserts 3, for example, made from carbide, preferably of sintered double carbides.
  • the inserts 3 have, when considering sections taken radially through the tool body R and containing the axis thereof, cross-sectional profiles which correspond approximately to the profile of the cutting ribs 1, but which project somewhat beyond the flanks of the ribs and beyond the crown surfaces. If the working surfaces of the inserts, in the case of a new cutting roller, are flush with (FIG. 9) or extend beyond (FIG. 3) the surrounding material of the roller body, the material of the roller body present in the outer layer in the region of the inserts can, under the action of the pressure occurring during cutting or boring, also be compressed and thereby strengthened.
  • the wearing zones on the cutting ribs I which are denoted by reference characters a, b and c in FIG. 1 are respectively protected by each individual insert.
  • FIG. 2 The protection of the wearing zones on the cutting ribs by the inserts 3 is clearly shown in FIG. 2.
  • the inserts 3 consisting of highly wear-resistant material are seen to be inserted radially into the cutting ribs and fastened in the ribs such as to project outwardly beyond the material at the crown and two flank surfaces of the cutting rib 1 which are subject to wear.
  • the method of operation of the tool is apparent from FIG. 2.
  • the cutting roller R is rotated about an axis which is inclined downwards with regard to. the borehole axis, which axis is located to the right of FIG. 2.
  • the rock forming the borehole bottom 2 of the bore is thereby undercut and stripped in steps as soon as the cutting ribs 1 armed with the inserts 3 have penetrated, for instance by the extent d.
  • the new bottom of the borehole then extends approximately on the line 4. Since the cutting ribs and the highly wear-resistant inserts are comparatively narrow as compared with the width of the borehole 2, a favorable relationship between stripped and ground rock emerges.
  • the inserts 3 are arranged in the cutting ribs 1 in recesses 5, which are formed initially with greater cross-sectional dimensions than the corresponding dimensions of the inserts.
  • the cross section of each insert increases from its working surface to its root 3a.
  • the fastening of the insert 3 in the recess 5 is effected by displacing, tamping, pressing or otherwise deforming the material of the cutting rib bordering the recess 5 against the insert in the direction indicated by arrows in FIG. 3. In this way the insert is effectively embedded until the insert itself and the cutting rib in which it is embedded are completely worn away.
  • the insert 3 is safeguarded against stresses acting axially of the roller.
  • the section tangential to the cutting roller represented in FIG. 4 on the level of the line IV-IV of FIG. 3 shows that central portion 3b of the insert is thicker than the portions lying close to the flanks of the cutting rib. If, therefore, the material of the cutting rib is displaced against the insert 3 in the direction indicated by the arrows in FIG. 4, the insert is safeguarded against stresses acting axially of the roller, i.e. transversely of the rib.
  • the inserts can instead have the cross-sectional shape shown in FIG. 5.
  • the insert 3c represented in a section tangential to the cutting roller (which corresponds with that in FIG. 4) tapers towards the lateral working surface at the bottom of the figure more sharply than towards the other working surface lying at the top in the figure. More material of the roller body can thereby be displaced into the recess 5 in the regions 5a than in the remaining regions.
  • the insert 3c is therefore particularly reliably safeguarded against transverse forces which seek to displace it towards the bottom or the figure.
  • FIG. 6 A safeguard against the transverse forces directed radially of the borehole which occur upon boring can be achieved by means of the insert represented in FIG. 6.
  • the insert 3 is provided on its root side with an extension 3a projecting into the roller body.
  • the recess receiving the insert 3 is correspondingly depressed to receive the extension 3d.
  • the insert is, in this way, effectively locked in position against such transverse forces directed radially of the borehole, and these forces acting on the insert 3 are thereby transmitted to the roller body.
  • the extension 3d can be rounded or sharp-edged in profile.
  • the inserts can be fastened in position in their respective recesses by displacing the material bordering on the recesses 5 against the side faces of the inserts by externally applied foreces. In this way, compression and thereby strengthening of the material of the rib is obtained. This compression increases during boring, because of the forces acting on the ribs during the boring operation.
  • the inserts may be bonded in position in the recesses, by soldering, welding or the use of an adhesive, so as to be exchangeable or replaceable.
  • an adhesive such as epoxy, epoxy, or any other suitable adhesive, so as to be exchangeable or replaceable.
  • the material of the roller body is displaced into the still open recesses and compressed in the regions bordering on the inserts.
  • Synthetic resins are available which act as adhesives and which have strength properties which are not inferior to those of steel.
  • These adhesive materials have the further advantage of being comparatively elastic, so that, when used to bond the inserts in position, they can be used to accommodate the effects of shocks, which act to an extraordinarily high degree on the cutting ribs and inserts when working in rock.
  • the roller body R has ribs 1 which receive inserts 3 having wedgeshaped projections 3f to ensure positive connection. Opposite them there are corresponding working surfaces.
  • An elastic layer 6 of synthetic resin is also provided, which may, if desired, act as the sole connection means, cementing the adjoining parts together. lfan alternative means of connecting the parts is employed as is FIG. 8, the synthetic resin layers 6 and 7 merely have the task of forming an elastic intermediate layer which cushions the shocks encountered in use and at least partly converts them in an elastic type of deformation.
  • the inserts When the inserts are bonded in position by an adhesive or by solder from which the insert is readily releasable, the inserts may be easily replaced after they have sustained a given amount of wear.
  • each cutting roller is essentially stressed tightly independently of the support for the body.
  • An important feature is the arrangement of the cutting teeth consisting of tungsten carbides between the other teeth of the cutting rollers, which are intended to produce large holes, furrows, trenches and tunnels in rock, whereby it is thus a question of drilling, cutting and milling work.
  • the wear-resistant inserts protect the lateral flanks and the crown surfaces of the teeth consisting of the base material of the cutting rollers, so that the useful life of the cutting, boring and milling tools is increased several times.
  • a cutting roller for use in rock-boring equipment and comprising at least one circumferentially extending rib having an axially flattened crown surface lying between two sloping flank surfaces and being formed with a series of circumferentially spaced recesses in said crown and flank surfaces, and
  • each insert having a crown surface between two flank surfaces and being received within a respective said recess and having its said crown and flank surfaces respectively extending out at least as far radially as the crown and flank surfaces of the rib,
  • each said recess having substantially planar parallel axial walls and a flat bottom wall, and the cross section of each insert increasing from its working edge toward its root and having a rounded bottom surface at its root,
  • a cutting roller as claimed in claim 5 wherein the inserts have convexly curved side surfaces, with one side surface substantially larger than the other and are curved on the axially extending sides.
  • a cutting roller for use in rock boring equipment and comprising at least one circumferentially extending rib having an axially flattened crown surface lying between two sloping flank surfaces and being formed with a series of circumferentially spaced recesses in said crown and flank surfaces, and g a plurality of inserts of wear-resistant material each insert having a crown surface between two flank surfaces and being received within a respective said recess and having its said crown and flank surfaces respectively extending out at least as far radially as the crown and flank surfaces of the rib,
  • each said recess having substantially planar parallel axial walls and a bottom wall, the inserts having convexly curved side surfaces, with one side surface substantially larger than the other and being curved on the axially ex tending sides,
  • each insert having in each of said recesses a central depression, and said inserts each having a central rounded projection received in said depression, so that each insert is held in a formlocking manner, so that forces applied during use to the inserts are absorbed by the roller.
  • a cutting roller for use in rock-boring equipment and comprising at least one circumferentially extending rib having an axially flattened crown surface lying between two sloping flank surfaces and being formed with a series of circumferentially spaced recesses in said crown and flank surfaces, and
  • each insert having a crown surface between two flank surfaces and being received within a respective said recess and having its said crown and flank surfaces respectively extending out at least as far radially as the crown and flank surfaces of the rib,
  • each said rib being an annular member and being resiliently supported on a sleeve of said roller, which in turn is resiliently supported on a conical bush, each resilient support being by means of elastic layers,

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  • 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)
US735431A 1967-06-09 1968-06-07 Cutting roller Expired - Lifetime US3596724A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671533703 DE1533703B1 (de) 1967-06-09 1967-06-09 Schneidrolle fuer Erweiterungsrollenmeissel und andere Vorrichtungen zum Abtragen von Gestein und Verfahren zur Festlegung verschleissfester Einsatzstuecke

Publications (1)

Publication Number Publication Date
US3596724A true US3596724A (en) 1971-08-03

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Family Applications (1)

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US735431A Expired - Lifetime US3596724A (en) 1967-06-09 1968-06-07 Cutting roller

Country Status (5)

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US (1) US3596724A (enrdf_load_stackoverflow)
AT (1) AT281727B (enrdf_load_stackoverflow)
CH (1) CH524054A (enrdf_load_stackoverflow)
GB (1) GB1221723A (enrdf_load_stackoverflow)
NO (1) NO127361B (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734213A (en) * 1971-02-02 1973-05-22 Kennametal Inc Rotary cutter for excavation, especially for use with raise boring and tunnel boring machines
US3791465A (en) * 1971-11-10 1974-02-12 Union Ind Boring tool
US3858670A (en) * 1972-05-08 1975-01-07 Eugene Gray Ott Insert cutter for cutting kerfs
US3982595A (en) * 1972-07-24 1976-09-28 Dresser Industries, Inc. Rock boring cutter with replaceable cutting elements
US4004645A (en) * 1974-07-31 1977-01-25 Gwilym James Rees Disc cutting units for use on rock boring machines
US5234064A (en) * 1992-03-09 1993-08-10 The Robbins Company Roller cutter assembly having adjustable ring cutter spacing
US5626201A (en) * 1993-09-20 1997-05-06 Excavation Engineering Associates, Inc. Disc cutter and method of replacing disc cutters
US5904211A (en) * 1993-09-20 1999-05-18 Excavation Engineering Associates, Inc. Disc cutter and excavation equipment
US6131676A (en) * 1997-10-06 2000-10-17 Excavation Engineering Associates, Inc. Small disc cutter, and drill bits, cutterheads, and tunnel boring machines employing such rolling disc cutters
US6711803B1 (en) * 1998-12-25 2004-03-30 Takashima Corporation Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member
US20040207247A1 (en) * 2002-10-15 2004-10-21 Eric Jackson Automated excavation machine
US6857706B2 (en) 2001-12-10 2005-02-22 Placer Dome Technical Services Limited Mining method for steeply dipping ore bodies
US20050178818A1 (en) * 1998-12-25 2005-08-18 Kiyokazu Kobayashi Method of joining steel members, method of processing joined surface of steel member and reinforcing member
US20060000121A1 (en) * 2004-04-23 2006-01-05 Placer Dome Technical Services Limited Excavation apparatus and method
US20090038442A1 (en) * 2007-08-09 2009-02-12 James Shamburger Method and apparatus for retaining polycrystalline diamond cutters in a drill bit body of matrix or steel
US20130081881A1 (en) * 2011-09-30 2013-04-04 Varel International, Ind., L.P. Protective inserts for a roller cone bit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59122690A (ja) * 1982-12-28 1984-07-16 住友金属鉱山株式会社 地中穿孔ドリルビツト

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2010070A (en) * 1933-11-03 1935-08-06 Erickson Charles Replaceable bit rock drill
US2101376A (en) * 1934-10-09 1937-12-07 Wallramit Handel Mij Nv Percussive boring tool
US2223864A (en) * 1939-03-13 1940-12-03 John A Zublin Roller cutter
US2628072A (en) * 1949-09-01 1953-02-10 Timken Roller Bearing Co Drill bit having groove with hard metal cutter insert brazed therein
US2784943A (en) * 1952-11-03 1957-03-12 Sandvikens Jernverks Ab Rock drill bit with cutting insert
US3191699A (en) * 1963-02-18 1965-06-29 Robbins & Assoc James S Cutting wheel for rock drilling machine
US3294186A (en) * 1964-06-22 1966-12-27 Tartan Ind Inc Rock bits and methods of making the same
US3442342A (en) * 1967-07-06 1969-05-06 Hughes Tool Co Specially shaped inserts for compact rock bits,and rolling cutters and rock bits using such inserts

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2010070A (en) * 1933-11-03 1935-08-06 Erickson Charles Replaceable bit rock drill
US2101376A (en) * 1934-10-09 1937-12-07 Wallramit Handel Mij Nv Percussive boring tool
US2223864A (en) * 1939-03-13 1940-12-03 John A Zublin Roller cutter
US2628072A (en) * 1949-09-01 1953-02-10 Timken Roller Bearing Co Drill bit having groove with hard metal cutter insert brazed therein
US2784943A (en) * 1952-11-03 1957-03-12 Sandvikens Jernverks Ab Rock drill bit with cutting insert
US3191699A (en) * 1963-02-18 1965-06-29 Robbins & Assoc James S Cutting wheel for rock drilling machine
US3294186A (en) * 1964-06-22 1966-12-27 Tartan Ind Inc Rock bits and methods of making the same
US3442342A (en) * 1967-07-06 1969-05-06 Hughes Tool Co Specially shaped inserts for compact rock bits,and rolling cutters and rock bits using such inserts

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734213A (en) * 1971-02-02 1973-05-22 Kennametal Inc Rotary cutter for excavation, especially for use with raise boring and tunnel boring machines
US3791465A (en) * 1971-11-10 1974-02-12 Union Ind Boring tool
US3858670A (en) * 1972-05-08 1975-01-07 Eugene Gray Ott Insert cutter for cutting kerfs
US3982595A (en) * 1972-07-24 1976-09-28 Dresser Industries, Inc. Rock boring cutter with replaceable cutting elements
US4004645A (en) * 1974-07-31 1977-01-25 Gwilym James Rees Disc cutting units for use on rock boring machines
US5234064A (en) * 1992-03-09 1993-08-10 The Robbins Company Roller cutter assembly having adjustable ring cutter spacing
US5626201A (en) * 1993-09-20 1997-05-06 Excavation Engineering Associates, Inc. Disc cutter and method of replacing disc cutters
US5904211A (en) * 1993-09-20 1999-05-18 Excavation Engineering Associates, Inc. Disc cutter and excavation equipment
US5961185A (en) * 1993-09-20 1999-10-05 Excavation Engineering Associates, Inc. Shielded cutterhead with small rolling disc cutters
US6131676A (en) * 1997-10-06 2000-10-17 Excavation Engineering Associates, Inc. Small disc cutter, and drill bits, cutterheads, and tunnel boring machines employing such rolling disc cutters
US6711803B1 (en) * 1998-12-25 2004-03-30 Takashima Corporation Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member
US20050178818A1 (en) * 1998-12-25 2005-08-18 Kiyokazu Kobayashi Method of joining steel members, method of processing joined surface of steel member and reinforcing member
US6857706B2 (en) 2001-12-10 2005-02-22 Placer Dome Technical Services Limited Mining method for steeply dipping ore bodies
US20040207247A1 (en) * 2002-10-15 2004-10-21 Eric Jackson Automated excavation machine
US7695071B2 (en) 2002-10-15 2010-04-13 Minister Of Natural Resources Automated excavation machine
US20100109417A1 (en) * 2002-10-15 2010-05-06 Minister Of Natural Resources Canada Automated Excavation Machine
US8016363B2 (en) 2002-10-15 2011-09-13 Eric Jackson Automated excavation machine
US20060000121A1 (en) * 2004-04-23 2006-01-05 Placer Dome Technical Services Limited Excavation apparatus and method
US7192093B2 (en) 2004-04-23 2007-03-20 Placer Dome Technical Services Limited Excavation apparatus and method
US20090038442A1 (en) * 2007-08-09 2009-02-12 James Shamburger Method and apparatus for retaining polycrystalline diamond cutters in a drill bit body of matrix or steel
US20130081881A1 (en) * 2011-09-30 2013-04-04 Varel International, Ind., L.P. Protective inserts for a roller cone bit
CN103032026A (zh) * 2011-09-30 2013-04-10 维拉国际工业有限公司 用于牙轮钻头的保护插件

Also Published As

Publication number Publication date
CH524054A (de) 1972-06-15
GB1221723A (en) 1971-02-10
NO127361B (enrdf_load_stackoverflow) 1973-06-12
AT281727B (de) 1970-05-25

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