US2952171A - Type of cutter-bar - Google Patents

Type of cutter-bar Download PDF

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Publication number
US2952171A
US2952171A US699598A US69959857A US2952171A US 2952171 A US2952171 A US 2952171A US 699598 A US699598 A US 699598A US 69959857 A US69959857 A US 69959857A US 2952171 A US2952171 A US 2952171A
Authority
US
United States
Prior art keywords
bed
bit
head
bar
cutter
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
US699598A
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English (en)
Inventor
Breuning Robert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2952171A publication Critical patent/US2952171A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/007—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor for internal turning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2222—Tool adjustable relative to holder
    • Y10T407/2252—Rectilinearly
    • Y10T407/226—Rectilinearly including detent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/227—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool seat to holder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/2282—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder including tool holding clamp and clamp actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/86—Tool-support with means to permit positioning of the Tool relative to support
    • Y10T408/885—Tool-support with means to permit positioning of the Tool relative to support including tool-holding clamp and clamp actuator

Definitions

  • the present invention relates to an elongated cutterbar or boring-bar or similar tool holder provided with an elongated turning-tool longitudinally adjustable transversely of the holder and secured in adjusted position by a releasable clamping element.
  • the forward end of the bar, or the head-part secured to the forward end of the bar, receiving the turning-tool are usually flattened down to such an extent that the superposed clamping or fastening element does not project beyond the cylindrical circumference of the cutter-bar.
  • the object of the invention is to provide a cutter-bar in which these disadvantages will not occur. And, according to the invention, this is achieved by the special arrangements of the bed and clamp positioned in a transverse bore through the bar and spaced to receive the turning tool between them with clamping engagement of the tool near one end of the bore, leaving the remainder of the tool supported by the bed, but the bit may be shortened substantially by regrinding for more economical use.
  • the cross-section of the bed-part, or of the turningtool may be of semi-circular, trapezoidal, or triangular,
  • the cross-section of the bedpart, or of the turning-tool has the shape of a partial ellipsis provided with symmetrical flanks, whereby the turning-tool positioned in the bed-part is so dimensioned that it slightly projects from the bed-part.
  • a crosssection like this has the advantage that permissible variations in measure, which are frequent in hard-metal turning-tools, can be made up for by the clamping element without the necessity of re-grinding of the turning-tool and without interference with the reliable seat of the turning-tool in the bed-part.
  • Fig. 1 is a side-view of a cutter-bar with a portion Of the head-part removed;
  • FIG. 2 is a top-plan-view of the cutter bar of Fig. 1;
  • Fig. 3 is a sectional view on line III-III of Fig. 2;
  • Fig. 4 is a sectional view on line IVIV of Fig. 2.
  • the reference numeral 1 designates the cutter-bar.
  • 2 is the head having a cross bore 9 of less diameter at the right hand end than the major portion of the here which provides a shoulder '8 near one end and facing toward the head axis.
  • Bed 3 is of semi-cylindrical cross section and at one end its edges 3a are provided with extensions 5.
  • 4 is the clamp received in the bore opposite to bed 3 and seated against shoulder 8. At its right hand end its fiat face rests upon extensions 5. At its left hand end the clamp has a projection 6 bearing against the upper face of the cutting tool or hit 10 which is seated against the inner face of bed 3.
  • a stud 7 with a shouldered head seated in a socket in head 2 is threaded into bed .3 and seats the bed against the adjacent portion of bore 9.
  • a set screw 11 threaded into head 2 has a pointed end seated in a recess in clamp 4 and thrusts the ends of the latter against extensions 5 and bit 10, respectively.
  • the right hand end of bed 3 is seated against shoulder 8.
  • the opposing faces of clamp element 6 and bit 10 are roughened or serrated transversely to prevent slippage.
  • the thickness of bit 10 is greater than the depth of the concavity in bed 3 so that the bit projects above the plane of the fiat side edges of the bed (Fig. 4).
  • the opposing faces of the bit and bed are arcuate but may be made triangular or trapezoidal. These interengaging faces permit tolerances in the dimensions of the parts i without requiring a grinding fit and at the same time provide a secure seating of the bit against the bed.
  • the clamping elemeut 4 is enabled to move within the bore away from the bit for the extent of the space between its rear face and the side of the bore, so that bit 10 can then without dilficulty be withdrawn or re-inserted, for example for the purpose of re-grinding.
  • bit 10 is engaged on one side by bed 3 but on the other side is free from contact with any clamp element and therefore not subjected to stresses except through projection 6.
  • the bit may be sharpened repeatedly and throughout the major portion of its length until only so much remains as will suifice for engagement by clamp element 6.
  • a boring bar tool comprising a cylindrical head provided with a substantially cylindrical through passage of less width than the diameter of the head and extending diagonally through the head and open at its ends, there being a shoulder in said passage near one end of the passage and facing toward the head axis, an elongated rigid bed semicylindrical in cross section with an arcuate outer face seated against one side of said passage and with an elongated cavity of uniform cross section in its flattened inner face forming a cutter bit seat, the bed having an inner end seated against said shoulder and an outer end adjacent the periphery of the head, the sides of said recess including short upstanding, transversely extending lugs near said bed inner end, a shouldered set screw inserted through the head from the exterior thereof and threaded into the bed intermediate the ends of the bed and holding the bed securely in place in said passage, an elongated rigid clamping element, substantially semicylindrical in cross section with an arcuate outer face received in the side of said passage opposite to the bed and with its flat
  • a boring bar tool comprising a cylindrical head provided with a substantially cylindrical through passage of less width than the diameter of the headand extending diagonally through the head and open at its ends, there being a shoulder in said passage near one end of the passage and facing toward the head axis, an elongated rigid bed semicylindrical in cross section with an arcuate outer face seated against one side of said passages and with an elongated cavity of uniform cross section in its flattened inner face forming a cutter bit seat, the bed being wholly contained Within the head and the sides of said recess including short upstanding, transversely extending lugs near said bed inner end, an elongated rigid clamping element, substantially semicylindrical in cross section with an arcuate outer face received in the side of said passage opposite to the bed and with its flattened inner face opposing the bed, one end of the clamping element flattened inner face being seated on said bed lugs and the other end of the element flattened face having a transversely extending offset toward the outer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Earth Drilling (AREA)
US699598A 1956-12-04 1957-11-29 Type of cutter-bar Expired - Lifetime US2952171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2952171X 1956-12-04

Publications (1)

Publication Number Publication Date
US2952171A true US2952171A (en) 1960-09-13

Family

ID=8017425

Family Applications (1)

Application Number Title Priority Date Filing Date
US699598A Expired - Lifetime US2952171A (en) 1956-12-04 1957-11-29 Type of cutter-bar

Country Status (3)

Country Link
US (1) US2952171A (de)
DE (1) DE1074364B (de)
NL (2) NL222379A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087194A (en) * 1977-04-14 1978-05-02 Triangle Grinding, Inc. Cutting tool
US20040062617A1 (en) * 2002-08-14 2004-04-01 Ken King Small size grooving and turning insert
USD753737S1 (en) * 2013-10-24 2016-04-12 Sumitomo Electric Hardmetal Corp. Cutting tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69028998T2 (de) * 1989-06-26 1997-05-07 Mitsubishi Materials Corp Bohrstangenwerkzeug
US5261767A (en) * 1989-06-26 1993-11-16 Mitsubishi Metal Corporation Boring bar tool

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189405600A (en) * 1894-03-17 1894-11-24 William Copley An Improved Tool Holder to be Employed in Screw Cutting and other Lathes.
US781786A (en) * 1904-05-09 1905-02-07 Eugene F Jewell Tool-holder.
US1056653A (en) * 1912-02-24 1913-03-18 Ready Tool Company Tool-holder.
US1104980A (en) * 1913-08-22 1914-07-28 John Valentine Fry Tool-holder.
US1242707A (en) * 1917-05-03 1917-10-09 Fred P Lovejoy Metal-working tool.
US1256359A (en) * 1917-05-25 1918-02-12 Emil C Feldt Combined tool and holder.
US1319950A (en) * 1919-10-28 davey
US1447139A (en) * 1921-07-16 1923-02-27 Lee Charles Walter Tool holder
DE375757C (de) * 1922-01-24 1923-05-18 Siegfried Maetzke Werkzeugstahlhalter
US1487259A (en) * 1922-03-20 1924-03-18 Anthony J Moglich Tool holder
US2160369A (en) * 1937-04-12 1939-05-30 Rikof Olof Nilsson Tool holder
GB549862A (en) * 1941-07-24 1942-12-10 Taylor & Jones Ltd An improvement in or relating to tool-holders for metal-cutting machines
US2305737A (en) * 1941-01-21 1942-12-22 James H Richards Boring attachment for milling machines
US2308151A (en) * 1941-06-17 1943-01-12 Bogdel William Alexander Six-in-one carbide tool holder
US2347136A (en) * 1942-08-17 1944-04-18 Speckert Siegfried Toolholder
CH257171A (fr) * 1947-03-14 1948-09-30 Peter Roger Dispositif de coupe pour machines-outils.
US2541719A (en) * 1946-08-21 1951-02-13 John R Proksa Machine tool bit holder
GB656983A (en) * 1949-01-22 1951-09-05 Miller Ralph Improvements relating to cutting tool holders for lathes and other machine tools
CH304458A (de) * 1951-12-01 1955-01-15 Breuning Robert Ausbohrwerkzeug.
FR1102292A (fr) * 1953-07-13 1955-10-18 Porte-outil pour outils de tour
FR1105369A (fr) * 1954-03-30 1955-11-30 Sandvikens Jernverks Ab Outil à élément de coupe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1028868A (fr) * 1950-10-13 1953-05-28 Porte-outils perfectionné
AT183293B (de) * 1951-12-01 1955-09-26 Robert Breuning Ausbohrwerkzeug

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1319950A (en) * 1919-10-28 davey
GB189405600A (en) * 1894-03-17 1894-11-24 William Copley An Improved Tool Holder to be Employed in Screw Cutting and other Lathes.
US781786A (en) * 1904-05-09 1905-02-07 Eugene F Jewell Tool-holder.
US1056653A (en) * 1912-02-24 1913-03-18 Ready Tool Company Tool-holder.
US1104980A (en) * 1913-08-22 1914-07-28 John Valentine Fry Tool-holder.
US1242707A (en) * 1917-05-03 1917-10-09 Fred P Lovejoy Metal-working tool.
US1256359A (en) * 1917-05-25 1918-02-12 Emil C Feldt Combined tool and holder.
US1447139A (en) * 1921-07-16 1923-02-27 Lee Charles Walter Tool holder
DE375757C (de) * 1922-01-24 1923-05-18 Siegfried Maetzke Werkzeugstahlhalter
US1487259A (en) * 1922-03-20 1924-03-18 Anthony J Moglich Tool holder
US2160369A (en) * 1937-04-12 1939-05-30 Rikof Olof Nilsson Tool holder
US2305737A (en) * 1941-01-21 1942-12-22 James H Richards Boring attachment for milling machines
US2308151A (en) * 1941-06-17 1943-01-12 Bogdel William Alexander Six-in-one carbide tool holder
GB549862A (en) * 1941-07-24 1942-12-10 Taylor & Jones Ltd An improvement in or relating to tool-holders for metal-cutting machines
US2347136A (en) * 1942-08-17 1944-04-18 Speckert Siegfried Toolholder
US2541719A (en) * 1946-08-21 1951-02-13 John R Proksa Machine tool bit holder
CH257171A (fr) * 1947-03-14 1948-09-30 Peter Roger Dispositif de coupe pour machines-outils.
GB656983A (en) * 1949-01-22 1951-09-05 Miller Ralph Improvements relating to cutting tool holders for lathes and other machine tools
CH304458A (de) * 1951-12-01 1955-01-15 Breuning Robert Ausbohrwerkzeug.
FR1102292A (fr) * 1953-07-13 1955-10-18 Porte-outil pour outils de tour
FR1105369A (fr) * 1954-03-30 1955-11-30 Sandvikens Jernverks Ab Outil à élément de coupe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087194A (en) * 1977-04-14 1978-05-02 Triangle Grinding, Inc. Cutting tool
US20040062617A1 (en) * 2002-08-14 2004-04-01 Ken King Small size grooving and turning insert
US6722825B1 (en) * 2002-08-14 2004-04-20 Kaiser Tool Company, Inc. Small size grooving and turning insert
USD753737S1 (en) * 2013-10-24 2016-04-12 Sumitomo Electric Hardmetal Corp. Cutting tool
USD788198S1 (en) 2013-10-24 2017-05-30 Sumitomo Electric Hardmetal Corp. Cutting tool

Also Published As

Publication number Publication date
DE1074364B (de) 1960-01-28
NL100500C (de)
NL222379A (de)

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