US3730636A - Boring head - Google Patents

Boring head Download PDF

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Publication number
US3730636A
US3730636A US00093932A US3730636DA US3730636A US 3730636 A US3730636 A US 3730636A US 00093932 A US00093932 A US 00093932A US 3730636D A US3730636D A US 3730636DA US 3730636 A US3730636 A US 3730636A
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US
United States
Prior art keywords
transverse
bolt
channel
sliding element
bit
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
US00093932A
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English (en)
Inventor
S Mizoguchi
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 US3730636A publication Critical patent/US3730636A/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
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03403—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
    • B23B29/03425—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of gears and racks
    • 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
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/856—Moving means including pinion engaging rack-like surface of Tool
    • 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
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/858—Moving means including wedge, screw or cam
    • Y10T408/8588—Axially slidable moving-means
    • Y10T408/85892—Screw driven wedge or cam
    • Y10T408/85895—Traveling wedge
    • Y10T408/858953—Interfitting, tool-retaining wedge
    • 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
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/858—Moving means including wedge, screw or cam
    • Y10T408/8593—Wedge moving perpendicular to tool-axis
    • 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
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/858—Moving means including wedge, screw or cam
    • Y10T408/8598—Screw extending perpendicular to tool-axis
    • Y10T408/85995—Screw extending perpendicular to tool-axis with tool-holding clamp and clamp actuator

Definitions

  • a boring head has a boring head body having a shank on the upper part thereof, and bit mounting means is slidably fitted into a transverse channel formed on the underside of the body. A bit is secured to the bit mounting means.
  • a bolt is loosely fitted into a transverse hole formed through the mounting means, one end thereof being loosely fitted through a hole formed on one side of the concave channel of the body. The other end of the bolt is screwed into a threaded hole formed on the other side of said concave channel.
  • Wedge members are provided in concavities above the transverse channel which are moved by bolts therethrough to wedge the mounting means downwardly while it is loosely held by the bolt through the transverse hole, after which the bolt s tightened to secure the mounting means.
  • the mounting means has a helical rack gear thereon meshing with a sliding member in a transverse hole above the transverse channel, and a bolt threaded through the sliding member moves the sliding member when the bolt is rotated, thereby moving the mounting means 1 Claim, 6 Drawing Figures PATENTEDHAY 1 I975 '3; 730.636
  • the bit is adjustably secured directly to the boring head by means of a screw, making it necessary when adjusting the position of the bit to loosen the screw'each time the bit is to be extended or retracted.
  • the known boring head has a disadvantage in that it requires a great deal of effort to adjust the bit thereof.
  • the first object of this invention is to obviate the aforementioned constructional defect of the conventional boring head, and to provide a boring head which is simple in construction and easy to operate.
  • the second object of this invention is to facilitate the adjusting operation of the bit and also facilitate the determination of the fixed bit position by improving the fixing means for fixing the bit to the boring head.
  • the third object of this invention is to facilitate minute adjustment of the bit by means of micromotion of bit mounting tables fixed to the boring head.
  • FIG. 1 is an elevation partially in longitudinal section, showing a first embodiment of the boring head according to this invention.
  • FIG. 2 is a lateral view of the foregoing embodiment.
  • FIG. 3 is an bottom view of the foregoing embodiment.
  • FIG. 4 is an elevation partially in longitudinal section, showing a second embodiment of this invention.
  • FIG. 5 is a lateral view partially in longitudinal section of the foregoing embodiment.
  • FIG. 6 is a cross sectional view taken on the line 66 in FIG. 5.
  • the numeral 1 1 designates a boring head body having a shank 12 with a tapering, straight or any other arbitrary shape.
  • a concave channel 14 traversing said body 11, the center of said concave channel 14 coinciding with that of the axis of the body 11, both ends of said concave channel 14 being open on the peripheral surface of the body 11.
  • a pair of bit mounting bases 15 are slidably fitted inside the concave channel 14. On the confronting faces of these mounting bases 15 are formed traverse zigzag ridges 16 slidably engaging with each other, said two mounting bases 15 with the zigzag ridges 16 engaging with each other being fitted into the concave channel 14 so as to be smoothly slidable between both lateral sides of said channel 14.
  • each of the mounting bases 15 is formed a transverse hole, a fixing bolt 18 attached to the body 11 being loosely fitted in said transverse hole 17.
  • This bolt 18 is loosely fitted in a hole 19 which is so formed on both sides of the concave channel 14 of the head 11 that it intersects at right angles with said concave channel 14, and is screwed into a threaded portion 20 of hole 19 on one side of channel 14.
  • the head 21 of the bolt 18 is fitted into a large-calibered bore 22 on the outside end of the penetrable hole 19.
  • On the outside of said head 21 is formed a polygonal bore 23 for engagement by a revolving tool.
  • the numeral 24 designates a pair of diametrically 0pposed concavities formed in the upper part of both ends of the concave channel 14, the lower parts of the concavities 24 communicating with the concave channel 14, the upper faces 25 of said concavities 24 being inclined downwardly towards the back thereof, as shown in FIG. 1.
  • the numeral 26 designates a wedge member fitted into each of the concavities 24, the upper edge 27 of said wedge member 26 being so inclined so that it fits against the upper face 25 of each concavity 24, the underside 28 thereof being horizontal so as to fit against the upper face of each bit mounting base 15. Moreover, said underside 28 is positioned so that part of it will extend over the upper face of each mounting base 15, as shown in FIG. 2.
  • the numeral 29 designates a bolt which is loosely fitted into a hole 30 provided in each wedge member 26, said bolt 29 being screwed into a threaded hole 31 provided at the back of the concavity 24, the head 32 of each bolt 29 being loosely fitted inside a largecalibered bore 33 formed on the outside end of the bore 30.
  • the parts are so arranged that said head 32 will be pressed against the bottom of the largecalibered bore 33 through a washer 34.
  • a coil spring 36 is fitted between a largecalibered bore 35 formed on the inside end of the hole 30 and the back of the concavity 24, said coil spring 36 being externally fitted around the bolt 29, the outer end of the spring 36 being pressed against the bottom of the large-calibered bore 35 through a washer 36.
  • a polygonal concavity 37 for engagement with a revolving tool as shown in FIG. 2.
  • the numeral 38 designates a bit secured by a bolt 39 in a concavity 42 at the opposite ends of the mounting bases 15.
  • the numeral 40 designates scales provided on the underside of the body 11, said scales 40 being formed along both sides of the concave channel 14 to show the position of an indicator 41 provided on the lateral side of each bit mounting base 15.
  • each bit mounting base 15 is freely slidable inside the concave channel 14 when the bolt 18 is loosened, and the amount each bit 38 extends beyond the lateral side of the body 11 is freely adjustable by sliding traversely each mounting base 15 along the zigzag ridges 14 inside the concave channel 14, the position of each bit 38 being accurately determinable by setting the indicator on the mounting base 15 on the scale 40.
  • Both bit mounting bases 15 are tightly engaged at both sides of the concave channel 14 when the bolt 18 is tightened after adjustment of the position of said bases 15 as described hereinbefore.
  • the boring head body 11 is attached to the main shaft of a taper shank boring machine for the boring operation.
  • FIGS. 4 to 6 show that the transverse minute adjustment of the bit is easily carried out in the second embodiment of this invention.
  • the numeral 5 designates a boring head body having thereon shank 52 with a tapering, straight, or any other arbitrary shape, a dovetail channel 53 being transversely formed in the lower part of the body 51.
  • the numeral 54 designates a bit mounting base having a dovetail protrusion 55 integrally formed on the upper part thereof which is slidably fitted into the aforementioned dovetail channel 53, a helical rack gear 56 being formed on said protrusion 55.
  • a transverse hole 57 positioned above the dovetail channel 53 and crossing said channel at right angles thereto, the central lower part of the transverse hole 57 communicating with the central part of the dovetail channel 53.
  • a sliding element 58 Inside the transverse hole 57 is slidably fitted a sliding element 58, a key 60 axially provided on the upper side of the transverse hole 57 being slidably fitted into a key groove 59 on the upper side of the sliding element 58, so that said sliding element 58 can accurately move along the axial line of the transverse hole 57.
  • a helical rack gear 61 in mesh with the helical rack gear 56.
  • the head 64 ofa bolt 63 is rotatably fitted into an annular member 62 secured over one end of the transverse hole 57, a polygonal concavity 67 for engagement with a revolving tool being formed on the outside of said head 64.
  • the bolt 63 is concentric with the transverse hole 57 and screwed into a threaded hole 65 formed in the sliding element 58.
  • a large-calibered bore 66 is formed in the transverse hole on the end over which the annular member 62 is secured, and a flange 68 concentrically formed at the base of the head 64 of the bolt 63 being supported on the inner and of the large-calibered bore 66 through washers 69 and 70.
  • the other end of the transverse hole 57 is closed by a lid 71 thereover.
  • the numeral 72 designates a bit fixed to the external end of a bolt 73, said bolt 73 being screwed into a threaded hole 74 formed obliquely in the lower part of one end of the bit mounting base 54 and secured in position with a setscrew 75.
  • the bolt 63 is revolved by engaging a revolving tool in the concavity 67 of the bolt 63 with the helical rack gear 56 and the helical rack gear 61 of the sliding element 58 meshing with each other, then ing base 54 having the protrusion 55 which engages with the sliding element 58 moves along the dovetail channel 53 thereb altering the amount of lateral extension of the bit 7 Since t e transversal movement of the mounting base 54 is extremely small as compared with the amount of rotation of the bolt 63, the amount the bit 72 extends can be very finely adjusted.
  • the bit mounting base 54 becomes slidable independently of the bolt 63, thereby making it possible to move the mounting base 54 to a large distance.
  • minute adjustment can again be carried out by revolving the bolt 63, thereby moving the sliding element 58 toward the protrusion 55 so that the rack gears 61 and 56 can mesh with each other. Therefore, in this embodiment, both minute adjustment and large-scale movement of the position of the bit are possible.
  • a boring head comprising a body having a shank thereon and a transverse channel in the lower part thereof and a transverse hole therein above and at right angles to said transverse channel and communicating with said transverse channel, a bit mounting member, a projection provided on the upper part thereof slidably fitted into said transverse channel and having a helical rack gear having a plurality of teeth on the upper surface thereof, a sliding element slidably and nonrotatably fitted into said transverse hole and having a helical rack gear having a plurality of teeth on the lower surface thereof meshing with the helical rack gear on said projection, said sliding element having a threaded hole therethrough in the direction of the axis of said transverse hole, and a bolt rotatably and axially immovably mounted in said transverse hole and engageable in said threaded hole in said sliding element, said transverse hole extending beyond said transverse channel in at least one direction thereof to accommodate the entire said sliding element therein with the rack gears disengaged, and said bolt extending at

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Drilling And Boring (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US00093932A 1969-12-10 1970-12-01 Boring head Expired - Lifetime US3730636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44099618A JPS4837483B1 (sv) 1969-12-10 1969-12-10

Publications (1)

Publication Number Publication Date
US3730636A true US3730636A (en) 1973-05-01

Family

ID=14252065

Family Applications (1)

Application Number Title Priority Date Filing Date
US00093932A Expired - Lifetime US3730636A (en) 1969-12-10 1970-12-01 Boring head

Country Status (4)

Country Link
US (1) US3730636A (sv)
JP (1) JPS4837483B1 (sv)
DE (2) DE2060869C3 (sv)
GB (1) GB1328865A (sv)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231691A (en) * 1978-05-11 1980-11-04 Heinz Kaiser Ag Dual cutter boring head
US4793748A (en) * 1987-05-11 1988-12-27 Amca International Corporation Boring tool for machine tool
US4847975A (en) * 1987-05-11 1989-07-18 Amca International Corporation Boring tool for machine tool
US4981401A (en) * 1989-05-11 1991-01-01 Banke Donald W Boring bar with tool holder stations and control for same
US5222846A (en) * 1990-12-03 1993-06-29 Industrias Romi S.A. Ultra-precision sub-micron boring tool and pre-setting system
US5476347A (en) * 1994-02-28 1995-12-19 Industrias Romi S/A Displaceable cutting tool shank holder
US6086293A (en) * 1998-04-13 2000-07-11 Harmand Family Limited Partnership Cutting tool for machining valve seats
US20030002939A1 (en) * 2000-09-11 2003-01-02 Raymond Tugend Boring head
US6530727B2 (en) 1998-04-13 2003-03-11 Harmand Family Limited Partnership Contour machining head
US6640410B2 (en) 1998-04-13 2003-11-04 Harmand Family Limited Partnership Line transfer system with a contour machining head
US20120269590A1 (en) * 2009-10-29 2012-10-25 Wohlhaupter Gmbh Precision turning tool
RU2478023C2 (ru) * 2011-06-16 2013-03-27 Государственное образовательное учреждение высшего профессионального образования "Тольяттинский государственный университет" Устройство вибросверлильное

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7523920U (de) * 1975-07-26 1977-01-20 Komet Stahlhalter- Und Werkzeugfabrik Robert Breuning Gmbh, 7122 Besigheim Bohrstange o.dgl.
CH660702A5 (de) * 1983-09-20 1987-06-15 Urma Werkzeug Maschf Ausdrehwerkzeug mit einem zweischneiderkopf.
DE3738150A1 (de) * 1987-11-10 1989-05-24 Franz Dr Med Copf Knochenfraese
DE59002585D1 (de) * 1989-07-25 1993-10-07 Komet Stahlhalter Werkzeug Werkzeug für den einsatz in werkzeugmaschinen.
DE20007391U1 (de) 2000-04-22 2000-07-20 Bartels, Silvia, 33397 Rietberg Verstellbarer Profiler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US877950A (en) * 1907-03-15 1908-02-04 Carroll L Riker Jr Boring-bar.
US2874597A (en) * 1956-11-29 1959-02-24 Burton E Bach Micrometric boring head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US877950A (en) * 1907-03-15 1908-02-04 Carroll L Riker Jr Boring-bar.
US2874597A (en) * 1956-11-29 1959-02-24 Burton E Bach Micrometric boring head

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231691A (en) * 1978-05-11 1980-11-04 Heinz Kaiser Ag Dual cutter boring head
US4793748A (en) * 1987-05-11 1988-12-27 Amca International Corporation Boring tool for machine tool
US4847975A (en) * 1987-05-11 1989-07-18 Amca International Corporation Boring tool for machine tool
US4981401A (en) * 1989-05-11 1991-01-01 Banke Donald W Boring bar with tool holder stations and control for same
US5222846A (en) * 1990-12-03 1993-06-29 Industrias Romi S.A. Ultra-precision sub-micron boring tool and pre-setting system
US5476347A (en) * 1994-02-28 1995-12-19 Industrias Romi S/A Displaceable cutting tool shank holder
US6086293A (en) * 1998-04-13 2000-07-11 Harmand Family Limited Partnership Cutting tool for machining valve seats
US6382883B1 (en) 1998-04-13 2002-05-07 Harmand Family Limited Partnership Method for lapping valve seats using a single point cutting tool
US6530727B2 (en) 1998-04-13 2003-03-11 Harmand Family Limited Partnership Contour machining head
US6640410B2 (en) 1998-04-13 2003-11-04 Harmand Family Limited Partnership Line transfer system with a contour machining head
US20030002939A1 (en) * 2000-09-11 2003-01-02 Raymond Tugend Boring head
US6840719B2 (en) * 2000-09-11 2005-01-11 E.P.B. Boring head
US20120269590A1 (en) * 2009-10-29 2012-10-25 Wohlhaupter Gmbh Precision turning tool
US8684638B2 (en) * 2009-10-29 2014-04-01 Wohlhaupter Gmbh Precision turning tool
RU2478023C2 (ru) * 2011-06-16 2013-03-27 Государственное образовательное учреждение высшего профессионального образования "Тольяттинский государственный университет" Устройство вибросверлильное

Also Published As

Publication number Publication date
GB1328865A (en) 1973-09-05
DE2060869A1 (de) 1971-06-24
DE2065306A1 (de) 1973-03-22
DE2060869B2 (sv) 1974-05-09
JPS4837483B1 (sv) 1973-11-12
DE2060869C3 (de) 1974-11-28

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