US1838520A - Turning and boring tool - Google Patents

Turning and boring tool Download PDF

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Publication number
US1838520A
US1838520A US406406A US40640629A US1838520A US 1838520 A US1838520 A US 1838520A US 406406 A US406406 A US 406406A US 40640629 A US40640629 A US 40640629A US 1838520 A US1838520 A US 1838520A
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Prior art keywords
cutter
holder
waist
shoulder
hole
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US406406A
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Archer John
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English Steel Corp Ltd
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English Steel Corp Ltd
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    • 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
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1614—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/04—Overall shape
    • B23B2200/0457—Pentagonal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/08—Rake or top surfaces
    • B23B2200/083—Rake or top surfaces curved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/12—Side or flank surfaces
    • B23B2200/125—Side or flank surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2205/00—Fixation of cutting inserts in holders
    • B23B2205/04—Fixation screws, bolts or pins of particular form
    • 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
    • Y10T407/2266—Holder adapted for tools of different shape
    • 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
    • Y10T407/2274—Apertured tool
    • Y10T407/2276—Apertured tool with means projecting through aperture to force tool laterally against reaction surface
    • 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
    • Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
    • 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
    • Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
    • Y10T407/235—Cutters, for shaping including tool having plural alternatively usable cutting edges with integral chip breaker, guide or deflector

Definitions

  • This invention relates to turning, boring and like tools of the type in which a detachable cutter having taper sides is'secured to. a holder by a centralfstud or the like with the cutter side supported by a'shoulder or recess wall on the holder, theobjectofthe invention being, to provide improved means for securing the cutterto the holder.
  • the cuttingpoints or edges of the cutter are formed at-the junctionofits taper sides with the larger end surface and when worn anew point or part of the'edge may be brought into'operation by turning the cutter about the central stud or the like.
  • the sides of the cutter are formed with a waist
  • the holder is provided with an undercut shoulder or wall fitting the tool waist
  • a wedgingepin engages an axial hole in the cutter and a hole in the holder which isslightly nearer than the one in thecutter to the undercut shoulder or wall when the cutter is-in contact-therewith.
  • the action of the wedging p111 tends to draw these holes into register" and thus presses the cutter against the supporting shoulder or wallof the holder.
  • Figure 1 is an elevation of a'holder carry-s ing a tool at each end according to the present invention, one end of the holderbeing shown in central longitudinal section.
  • Figure 2 is a plan of Figure 1.
  • Figure 4 is a sectional elevation illustrat ing a modification.
  • the cutter 10 is provided withoutting points or edges 11 at one end and with a base 12' at the other end, the sides between the two ends 11 and 12 being tapered inwardly from both ends to form a waist 13.
  • the holder 14 is of bar form and is recessed at one or both ends toprovide a shoulder or'wall 15 i which is undercut'at 16 to fit the'waist '13 of? the cutter'll as shown, for example, on theleft-hand side of Figure 1.
  • the base 12 of the cutter 10 rests on the recessed end of the holder l t-and its waist 13 or'dove-tail like part of the side below that waist is pressed against the undercut portion 16 of the shoulder or wall15 by wedge action; s V
  • this wedge action is-setup by a pin having a cylindrical portion 17 sliding in a central cylindrical hole through the cutter 10 and a tapered portion 18 engaging a similarly'tapered hole in the recessed part of the holder 14.
  • the required wedge action is ensured by the disposition of the central hole in the cutter 10 in relation to the one of the holder :14, the lat-t ter. hole being slightly nearer than the former to the undercutshou'lder or wall 15, 16 when.
  • the undercut shoulder 15, 16 is preferably straight and inclined to the length of the holder 14 as shown in Figures 1, 2 and 3 and it will be appreciated that any shape of cutter may be secured to the holder by making each of them with its waist 13 at the same distance from its central hole, this distance being measured on the line 19 ( Figures 2 and 3) normal tothe waist passing through the I centre of the hole.
  • a square cutter is thus shown secured at the left-hand end of the holder in Figures 1 and 2, a triangular form at the corresponding end of the holder in Figure 3 whilst a pentagonal shape is shown at the right-hand end of Figure 3.
  • a circular cutter is shown at the right-hand side of Figures 1 and 2 and in order to enable it to be interchangeable with the other shapes of cutter and to provide increased bearing surface on the undercut shoulder 15,
  • the outline of the parts of the cutter engaging the undercut shoulder 15, 16 may. if desired, differ from the outline of the cutting edge 11 and the shoulder or wall 15 be shaped to correspond with the portion of the outline engaged thereby, the outline of the cutting edge being of any desired shape.
  • the wedging pin 17, 18' is preferably inserted through the cutter into the holder as shown in Figure 1, the pin tapering from its cylindrical portion 17 to a smaller diameter.
  • the tool so secured may be used with the cutting points or edges facing downwards there may then be some risk of the pin falling out and to avoid this it may be inserted through the hole in 6Q the holder intothe one in the cutter, asillustrated in Figure 4.
  • the tapered portion 18 of the pin is oppositely arranged, the wedging pin tapering to a smaller. diameter towards thecylindrical portion 17.
  • the taper 18 of the Wedging pin is of the same inclination as that of the hole in the holder engaged thereby, but these tapers are so formed as to provide a clearance 21 between them in the locking position on the side adjacent to the undercut shoulder 15, 16 of the holder.
  • the provision of this clearance 21 ensures the eflicient production of the desired wedging action on the cutter, since in the absence of such a clearance the wedging action would. be limited when the tapered portion 18 reached the end of its longitudinal travel by arriving at a fitting position in the taperedhole therein.
  • the cylindrical portion 17 of the pin is preferably formed accurately to fit the hole in the cutter 10.
  • the cutter As the cutter is sharpened by grinding its operative end face its axial length is gradually decreased and in order that it may remain eiiicient when the cutting points or edges 11 are ground to proximity with the waist 13 the angles between the inwardly tapered sides below the waist, immediately under the cutting points 11, are preferably removed by grinding or otherwise as indicated at 22 in order to providethe necessary clearance between the base of the cutter and the work.
  • the undercut-wall 15, 16 of the holder is preferably limited in height to be less than the axial length of the cutter 10 as illustrated, and the waist 13 is preferably nearer to the base 12 than to the cutting points 13 in the base of a new cutter, being asnear to the base as is consistent with an adequate engagement by the undercut portion 16 of the wall 15.
  • VJ hat I claim is 1.
  • a metal cutting tool the combination of a cutter having its sidesconverging from both ends to form a waist intermediate the ends, a holder having an. undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a Wedging pin engaging an axial hole in the cutter and a hole in the holder which is slightly nearer than the one in the cutter to the undercut shoulder when the cutter is in contacttherewith, substantially as and for the purpose specified.
  • a metal cutting tool the combination of a cutter having its sides converging from both ends to form a waist intermediate the ends, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a wedging pin having a cylindrical port-ion sliding in a cylindricalholeinthe cutter and a tapered portionengaging a, tapered hole in the holder, substantially as specified.
  • a metal cutting tool the combination of a cutter having its sides converging from both ends to form a waist intermediate the ends, a holder having an undercut-shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure, and a wedging pin having a cylindrical portion sliding in a cylindricalhole in the cutter and a tapered portion engaging a'tapered hole in the holder to lock the cutter waist in engagement with the shoulder, the tapers of the wedging pin and of the hole in the holder being formed to provide a clearance between them in the locking position on the side adjacent to the shoulder, substantially as specified.
  • a metal cutting tool having a circular operative edge at one end and flat sides inwardly tapered from a flat base of polygonal outline to form a waist, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a wedging pin engaging an axial hole in the cutter and a hole in the holder which is slightly nearer than the one in the cutter to the undercut shoulder When the cutter is is contact therewith, substantially as and for the purpose specified.
  • a metal cutting tool having a flat base of polygonal outline and sides inwardly tapered from the base to form a waist with the corners between the tapered sides removed between the waist and base, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due'to cutting pressure and a wedging pin engaging an axial hole in the cutter and a hole in the holder which is.
  • a metal cutting tool having an operative edge at one end and its sides tapered inwardly to form a waist nearer to its base than to its operative edge, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure of less height than the axial length of the cutter, and a wedging pin engaging an axial hole in the cutter and a hole in the holder which is slightly nearer than the one in the cutter to the undercut shoulder when the cutter is in contact therewith, substantially as and for the purpose specified.
  • a metal cutting tool the combination 7 ofa cutter having its sides converging from both ends to form a waist intermediate the ends, a holder having an undercut shoulder fitting the cutter waistand disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a wedgeing pin having a cylindrical portion sliding in a cylindrical hole in, the cutter and a tapered portion engaging a tapered hole in the holder which is slightly nearer than the one in the cutter to theundercut shoulder when the cutter is in contact therewith in a locking position, the tapers of the wedging pin and of the hole in the holder being formed to rovide a clearance between them in the loc ing position on the side adjacent to the shoulder, substantially as specified.
  • a metal cutting tool having an operative edge, a fiat base of polygonal outline and sides inwardly tapered from the base to form a waist nearer to its base than to its. operative edge with the corners between the tapered sides removed between the waist and base, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure of less height than the axial length of the cutter, and a wedging pin having a cylindrical portion sliding in a cylindrical hole in the cutter anda tapered pora tapered hole in the holder which is slig tly nearer than the one in the cutter to the undercut shoulder when the cutter is in contact therewith in a locking position, the tapers of the wedging pin and of the hole in the holder being formed to provide a clearance between them in the locking position on the side adjacent to the shoulder, substantially as specified. 7

Description

Dec. 29, 1931. .1. ARCHER TURNING AND BORING TOOL Filed Nov. 1929 Patented Dec. 29, 1931 UNITE'DISTATEST JOHN ARCHER, or SHEFFIELD, ENGLAND, Assmnoit r0 ENGLISH STEEL commune l LIMITED, or SHEFFIELD, ENGLAND V p v running A111) Bonfire Toot Application filed november n, 1929; Serial n 406,406, and iii Great Britainpecember 5, 1928.
This invention relates to turning, boring and like tools of the type in which a detachable cutter having taper sides is'secured to. a holder by a centralfstud or the like with the cutter side supported by a'shoulder or recess wall on the holder, theobjectofthe invention being, to provide improved means for securing the cutterto the holder.
As usually made the cuttingpoints or edges of the cutter are formed at-the junctionofits taper sides with the larger end surface and when worn anew point or part of the'edge may be brought into'operation by turning the cutter about the central stud or the like. Ac-
;; cording to the presentinvention-which mayv be "applied also to tools used for shaping, planing and other purposes, the sides of the cutter are formed with a waist, the holder is provided with an undercut shoulder or wall fitting the tool waist, and a wedgingepin engages an axial hole in the cutter and a hole in the holder which isslightly nearer than the one in thecutter to the undercut shoulder or wall when the cutter is-in contact-therewith. The action of the wedging p111 tends to draw these holes into register" and thus presses the cutter against the supporting shoulder or wallof the holder.
In the accompanying drawings Figure 1 is an elevation of a'holder carry-s ing a tool at each end according to the present invention, one end of the holderbeing shown in central longitudinal section.
, Figure 2 is a plan of Figure 1.
Figure 3 is a view similar to Figure 2 show-' ing differentlyshaped cutters carried by the holder. 1
Figure 4; is a sectional elevation illustrat ing a modification.
Like reference numerals indicate like parts throughout the drawings.
In carrying out thepresent invention as illustrated the cutter 10 is provided withoutting points or edges 11 at one end and with a base 12' at the other end, the sides between the two ends 11 and 12 being tapered inwardly from both ends to form a waist 13. The holder 14 is of bar form and is recessed at one or both ends toprovide a shoulder or'wall 15 i which is undercut'at 16 to fit the'waist '13 of? the cutter'll as shown, for example, on theleft-hand side of Figure 1. I The base 12 of the cutter 10 rests on the recessed end of the holder l t-and its waist 13 or'dove-tail like part of the side below that waist is pressed against the undercut portion 16 of the shoulder or wall15 by wedge action; s V
In the construction illustrated this wedge action. is-setup by a pin having a cylindrical portion 17 sliding in a central cylindrical hole through the cutter 10 and a tapered portion 18 engaging a similarly'tapered hole in the recessed part of the holder 14. The required wedge action is ensured by the disposition of the central hole in the cutter 10 in relation to the one of the holder :14, the lat-t ter. hole being slightly nearer than the former to the undercutshou'lder or wall 15, 16 when.
holes into register and thus presses the cutter.
against the supporting shoulder 15, 16. The parts are preferably arranged for this pressure to beexerted against the undercut portion16= of the shoulder 15, with a clearance, asillustrated, between the remainder of, the shoulder and the side of the toolbetween the waist 13 and cutting edge or points 11. If desired, however, the shoulder or wall 15 may be arranged to be in contact with the tool or both sides of its waist 13'. V
It will be appreciated that, as thehole in the holder and the part 18 of the pin engaging it are bothbf-a similar tapered formation. as illustrated, the sides of both being inclined to theaxis at the same angle, at the beginning of thewedging action the relative dis position of the holes in the cutter 10 and in holder 14:. This construction gives a substantial bearing surface between the pin and both the holder and the cutter, but in modified 10 the hole-in the cutter adjacent to the shoulder 15, 16 being normal to its base and the opposite side of the hole in the holder being inclined to correspond with the angle of the wedge or vice versa.
The undercut shoulder 15, 16 is preferably straight and inclined to the length of the holder 14 as shown in Figures 1, 2 and 3 and it will be appreciated that any shape of cutter may be secured to the holder by making each of them with its waist 13 at the same distance from its central hole, this distance being measured on the line 19 (Figures 2 and 3) normal tothe waist passing through the I centre of the hole. A square cutter is thus shown secured at the left-hand end of the holder in Figures 1 and 2, a triangular form at the corresponding end of the holder in Figure 3 whilst a pentagonal shape is shown at the right-hand end of Figure 3. A circular cutter is shown at the right-hand side of Figures 1 and 2 and in order to enable it to be interchangeable with the other shapes of cutter and to provide increased bearing surface on the undercut shoulder 15,
16, its tapered sides betweenits base 12 and waist 13 are made flat as shown at 20. In Figures 1 and 2 these flat sides 20 of the cutter engaging the undercut shoulder 15, 16 are shown hexagonal in outline. al-
0 though they may beof other shape if desired.
Similarly in all cases the outline of the parts of the cutter engaging the undercut shoulder 15, 16 may. if desired, differ from the outline of the cutting edge 11 and the shoulder or wall 15 be shaped to correspond with the portion of the outline engaged thereby, the outline of the cutting edge being of any desired shape.
When the cutter 10 is to beused withits cutting edge or points 11 uppermost the wedging pin 17, 18'is preferably inserted through the cutter into the holder as shown in Figure 1, the pin tapering from its cylindrical portion 17 to a smaller diameter. Although the tool so secured may be used with the cutting points or edges facing downwards there may then be some risk of the pin falling out and to avoid this it may be inserted through the hole in 6Q the holder intothe one in the cutter, asillustrated in Figure 4. In thiscase the tapered portion 18 of the pin is oppositely arranged, the wedging pin tapering to a smaller. diameter towards thecylindrical portion 17.
it! The wed'ging and locking act-ion is, however,
the same as that previously described with reference to F i re 1.
In both the constructions illustrated in Figure 1 and in Figure 4 the taper 18 of the Wedging pin is of the same inclination as that of the hole in the holder engaged thereby, but these tapers are so formed as to provide a clearance 21 between them in the locking position on the side adjacent to the undercut shoulder 15, 16 of the holder. The provision of this clearance 21 ensures the eflicient production of the desired wedging action on the cutter, since in the absence of such a clearance the wedging action would. be limited when the tapered portion 18 reached the end of its longitudinal travel by arriving at a fitting position in the taperedhole therein. The cylindrical portion 17 of the pin is preferably formed accurately to fit the hole in the cutter 10.
As the cutter is sharpened by grinding its operative end face its axial length is gradually decreased and in order that it may remain eiiicient when the cutting points or edges 11 are ground to proximity with the waist 13 the angles between the inwardly tapered sides below the waist, immediately under the cutting points 11, are preferably removed by grinding or otherwise as indicated at 22 in order to providethe necessary clearance between the base of the cutter and the work. For a like reason the undercut- wall 15, 16 of the holder is preferably limited in height to be less than the axial length of the cutter 10 as illustrated, and the waist 13 is preferably nearer to the base 12 than to the cutting points 13 in the base of a new cutter, being asnear to the base as is consistent with an adequate engagement by the undercut portion 16 of the wall 15.
VJ hat I claim is 1. In a metal cutting tool the combination of a cutter having its sidesconverging from both ends to form a waist intermediate the ends, a holder having an. undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a Wedging pin engaging an axial hole in the cutter and a hole in the holder which is slightly nearer than the one in the cutter to the undercut shoulder when the cutter is in contacttherewith, substantially as and for the purpose specified.
2. In a metal cutting tool the combination of a cutter having its sides converging from both ends to form a waist intermediate the ends, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a wedging pin having a cylindrical port-ion sliding in a cylindricalholeinthe cutter and a tapered portionengaging a, tapered hole in the holder, substantially as specified.
3. In a metal cutting tool the combination of a cutter having its sides converging from both ends to form a waist intermediate the ends, a holder having an undercut-shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure, and a wedging pin having a cylindrical portion sliding in a cylindricalhole in the cutter and a tapered portion engaging a'tapered hole in the holder to lock the cutter waist in engagement with the shoulder, the tapers of the wedging pin and of the hole in the holder being formed to provide a clearance between them in the locking position on the side adjacent to the shoulder, substantially as specified.
4. In a metal cutting tool the combination of a cutter having a circular operative edge at one end and flat sides inwardly tapered from a flat base of polygonal outline to form a waist, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a wedging pin engaging an axial hole in the cutter and a hole in the holder which is slightly nearer than the one in the cutter to the undercut shoulder When the cutter is is contact therewith, substantially as and for the purpose specified.
5. In a metal cutting tool the combination of a cutter having a flat base of polygonal outline and sides inwardly tapered from the base to form a waist with the corners between the tapered sides removed between the waist and base, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due'to cutting pressure and a wedging pin engaging an axial hole in the cutter and a hole in the holder which is.
slightly nearer than the one in the cutter to the undercut shoulder when the cutter is in contact therewith, substantially as .and for the purpose specified.
6. In a metal cutting tool the combination of a cutter having an operative edge at one end and its sides tapered inwardly to form a waist nearer to its base than to its operative edge, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure of less height than the axial length of the cutter, and a wedging pin engaging an axial hole in the cutter and a hole in the holder which is slightly nearer than the one in the cutter to the undercut shoulder when the cutter is in contact therewith, substantially as and for the purpose specified.
7 In a metal cutting tool the combination t1on engagin 'tion engaging a tapered hole in the holder to lock the cutter waist in engagement with the shoulder, the tapers of the wedging pin and of the'hole in the holder being formed to provide a clearance between them in the looking position on the side adjacent to the v shoulder, substantially as specified.
8. In a metal cutting tool the combination 7 ofa cutter having its sides converging from both ends to form a waist intermediate the ends, a holder having an undercut shoulder fitting the cutter waistand disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure and a wedgeing pin having a cylindrical portion sliding in a cylindrical hole in, the cutter and a tapered portion engaging a tapered hole in the holder which is slightly nearer than the one in the cutter to theundercut shoulder when the cutter is in contact therewith in a locking position, the tapers of the wedging pin and of the hole in the holder being formed to rovide a clearance between them in the loc ing position on the side adjacent to the shoulder, substantially as specified.
.9. In a metal cutting tool the combination of a cutter having an operative edge, a fiat base of polygonal outline and sides inwardly tapered from the base to form a waist nearer to its base than to its. operative edge with the corners between the tapered sides removed between the waist and base, a holder having an undercut shoulder fitting the cutter waist and disposed to take both the thrust of the tool feed and the tilt of the tool due to cutting pressure of less height than the axial length of the cutter, and a wedging pin having a cylindrical portion sliding in a cylindrical hole in the cutter anda tapered pora tapered hole in the holder which is slig tly nearer than the one in the cutter to the undercut shoulder when the cutter is in contact therewith in a locking position, the tapers of the wedging pin and of the hole in the holder being formed to provide a clearance between them in the locking position on the side adjacent to the shoulder, substantially as specified. 7
In testimony whereof I hereunto afiix my signature.
J ARCHER.
of a cutter having a circular operative edge
US406406A 1928-12-05 1929-11-11 Turning and boring tool Expired - Lifetime US1838520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35813/28A GB320809A (en) 1928-12-05 1928-12-05 Improvements in or relating to turning and boring tools

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US2630725A (en) * 1951-06-15 1953-03-10 United States Steel Corp Multiple cutter boring device
US2808637A (en) * 1953-11-23 1957-10-08 Arthur F Hudson Pyramidal tool and holder
US2838827A (en) * 1955-07-11 1958-06-17 John H Wright Cutting tool
US3097417A (en) * 1957-10-25 1963-07-16 Tool holder with replaceable tip
US3173191A (en) * 1962-10-10 1965-03-16 Wickman Wimet Ltd Tool holders for use with detachable inserts
US3250154A (en) * 1962-09-27 1966-05-10 Breuning Robert Boring or internal threading tool
US3341919A (en) * 1963-08-01 1967-09-19 Futurmill Inc Tool holder arrangement
US3354526A (en) * 1964-05-25 1967-11-28 Futurmill Inc Milling tool
US3357080A (en) * 1965-06-21 1967-12-12 Valeron Corp Indexable insert tool holder
US3491421A (en) * 1967-12-27 1970-01-27 Madison Ind Inc Tool holder for throw-away inserts
US3499198A (en) * 1965-07-01 1970-03-10 Warner Swasey Co Cutoff tool having deformable fixturing means
US3514826A (en) * 1967-04-18 1970-06-02 Diagrit Grinding Co Ltd Holder for a cutting tool bit
US3540102A (en) * 1968-01-15 1970-11-17 Valeron Corp Positive rake insert holder
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US20170326656A1 (en) * 2015-05-19 2017-11-16 Tungaloy Corporation Tool body and cutting tool
US20170341150A1 (en) * 2014-10-29 2017-11-30 Illinois Tool Works Inc. Interchangeable cutting inserts and methods associated with the same
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US20190160558A1 (en) * 2017-11-30 2019-05-30 Iscar, Ltd. Single-sided three-way indexable milling insert having high void volume to material volume ratio and insert mill therefor
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US2630725A (en) * 1951-06-15 1953-03-10 United States Steel Corp Multiple cutter boring device
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US3540102A (en) * 1968-01-15 1970-11-17 Valeron Corp Positive rake insert holder
USRE28389E (en) * 1970-03-03 1975-04-15 Indexable bit cutting tool holder
US3742565A (en) * 1970-07-31 1973-07-03 Oliver Machinery Co Rotary cutter
US3654682A (en) * 1970-09-01 1972-04-11 Edward H Newbould Tool holder
US3705447A (en) * 1970-10-22 1972-12-12 Thomas J Kollar Machine tool bit
US3786540A (en) * 1971-10-27 1974-01-22 Sandvikens Jernverks Ab Cutting insert
US3792515A (en) * 1971-10-27 1974-02-19 Sandvikens Jernverks Ab Single-faced cutting insert
US4059363A (en) * 1975-04-09 1977-11-22 Ugine Carbone Cutting plates with rounded cutting edges and concave frustoconical cutting surfaces
US4231406A (en) * 1977-11-11 1980-11-04 Jonsson Karl Erik A Device for treatment of the surface of round timber
US4552491A (en) * 1980-06-23 1985-11-12 United Technologies Corporation Cutting tool having cylindrical ceramic insert
US4556345A (en) * 1983-02-01 1985-12-03 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Multi-cornered reversible cutting-plate
US5232317A (en) * 1991-07-22 1993-08-03 J. P. Tool, Inc. Indexable spherical seat cutter
US5346336A (en) * 1992-11-04 1994-09-13 Sandvik, Inc. Metal-cutting insert having a round cutting edge
US5478175A (en) * 1993-08-24 1995-12-26 Greenleaf Corporation Cutting insert assembly
US5653274A (en) * 1994-08-29 1997-08-05 Johnson; Denis Debarker arms and debarker tips for mounting on log barking machines
WO1997000750A1 (en) * 1995-06-21 1997-01-09 Seco Tools Ab Cutting insert, cutting tool and method
US6053671A (en) * 1995-06-21 2000-04-25 Seco Tools Ab Metal cutting insert, and tool therefor, and method of mounting insert
CN1072542C (en) * 1995-06-21 2001-10-10 塞科机床公司 Cutting insert, cutting tool and method
WO1997003779A1 (en) * 1995-07-18 1997-02-06 Sandvik Aktiebolag Tool for metal cutting
US6004081A (en) * 1995-07-18 1999-12-21 Sandvik Ab Tool for metal cutting
US6164878A (en) * 1996-12-16 2000-12-26 Iscar Ltd. Cutting inserts
US6238133B1 (en) * 1998-10-20 2001-05-29 Kennametal Pc Inc. Anti-rotation mounting mechanism for round cutting insert
US6540448B2 (en) 2001-05-14 2003-04-01 Ingersoll Cutting Tool Company Cutting tool with improved insert seat arrangement for indexable cutting inserts
US6722826B2 (en) 2001-09-11 2004-04-20 Brian M. Cavanaugh Internal cavity cutting tool with stable support
USRE45536E1 (en) 2001-11-08 2015-06-02 Kennametal Inc. Dimpled insert with retaining clamp
US9446460B2 (en) 2003-10-15 2016-09-20 Kennametal Inc. Cutting insert for high feed face milling
US7988387B2 (en) 2003-10-15 2011-08-02 Tdy Industries, Inc. Cutting insert for high feed face milling
US20100284753A1 (en) * 2003-10-15 2010-11-11 Tdy Industries, Inc. Cutting Insert for High Feed Face Milling
US8821080B2 (en) 2003-10-15 2014-09-02 Kennametal Inc. Cutting insert for high feed face milling
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US8162572B2 (en) 2003-10-15 2012-04-24 TDY Industries, LLC Cutting insert for high feed face milling
US7568865B1 (en) 2004-09-10 2009-08-04 Ketterer John T Thread forming tool assembly
US20080260475A1 (en) * 2005-07-20 2008-10-23 Bodewig Frank Surface milling cutter with cutting inserts, a tool for holding a cutting insert with a cutting insert and method of machining a workpiece with a surface milling cutter holding cutting inserts
US20110236147A1 (en) * 2005-07-20 2011-09-29 Bodewig Frank Surface milling cutter with cutting inserts, a tool for holding a cutting insert with a cutting insert and method of machining a workpiece with a surface milling cutter holding cutting inserts
WO2009115527A3 (en) * 2008-03-18 2010-03-11 Franz-Josef Pokolm Indexable cutting insert for a milling tool
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JP2011515231A (en) * 2008-03-18 2011-05-19 ポコルム フランツ−ヨーゼフ Milling tools for cutting workpieces
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US8454279B2 (en) 2008-05-07 2013-06-04 TDY Industries, LLC Cutting tool system, cutting insert, and tool holder
US8613576B2 (en) 2008-08-14 2013-12-24 Kennametal Inc. Indexable cutting insert
US20110116878A1 (en) * 2008-08-14 2011-05-19 Kennametal Inc. Indexable Cutting Insert
DE202008008863U1 (en) * 2008-10-08 2009-12-03 Pokolm, Franz-Josef Milling tool for machining workpieces
US20100303563A1 (en) * 2009-02-12 2010-12-02 Tdy Industries, Inc. Double-Sided Cutting Inserts for High Feed Milling
US7976250B2 (en) 2009-02-12 2011-07-12 Tdy Industries, Inc. Double-sided cutting inserts for high feed milling
US8491234B2 (en) 2009-02-12 2013-07-23 TDY Industries, LLC Double-sided cutting inserts for high feed milling
US9586264B2 (en) 2009-04-28 2017-03-07 Kennametal Inc. Double-sided cutting insert for drilling tool
US8573903B2 (en) 2009-11-03 2013-11-05 Kennametal Inc. Round cutting insert with anti-rotation feature
US20110150586A1 (en) * 2009-12-18 2011-06-23 Tdy Industries, Inc. Tool Holder for Multiple Differently-Shaped Cutting Inserts
US8807884B2 (en) * 2009-12-18 2014-08-19 Kennametal Inc. Tool holder for multiple differently-shaped cutting inserts
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US20110197723A1 (en) * 2010-02-12 2011-08-18 Sandvik Intellectual Property Ab Turning insert, a tool part, a method as well as a machine tool for chip-cutting metal machining
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WO2012059394A1 (en) 2010-11-03 2012-05-10 Seco Tools Ab Cutting tool holding a plurality of types of cutting inserts
EP2450140A1 (en) * 2010-11-03 2012-05-09 SECO TOOLS AB (publ) Tool for holding a plurality of types of cutting inserts
US9144849B2 (en) 2010-11-03 2015-09-29 Seco Tools Ab Cutting tool holding a plurality of types of cutting inserts
US8657539B2 (en) 2011-03-28 2014-02-25 Kennametal Inc. Round cutting insert with reverse anti-rotation feature
US20130156515A1 (en) * 2011-12-19 2013-06-20 Iscar, Ltd. Cutting Insert and Cutting Tool
US9475134B2 (en) * 2011-12-19 2016-10-25 Iscar, Ltd. Cutting insert and cutting tool
USD709110S1 (en) 2012-04-24 2014-07-15 Kennametal Inc. Cutting insert
US8858130B2 (en) 2012-04-24 2014-10-14 Kennametal Inc. Indexable circular cutting insert
US9505065B2 (en) 2012-04-24 2016-11-29 Kennametal Inc. Indexable circular cutting insert
US9011049B2 (en) 2012-09-25 2015-04-21 Kennametal Inc. Double-sided cutting inserts with anti-rotation features
US9283626B2 (en) 2012-09-25 2016-03-15 Kennametal Inc. Double-sided cutting inserts with anti-rotation features
US9296054B2 (en) * 2013-05-23 2016-03-29 Kennametal Inc. Indexable cutting insert with a triangular shape
US20140348599A1 (en) * 2013-05-23 2014-11-27 Kennametal Inc. Indexable cutting insert with a triangular shape
US20170341150A1 (en) * 2014-10-29 2017-11-30 Illinois Tool Works Inc. Interchangeable cutting inserts and methods associated with the same
US11453060B2 (en) 2014-10-29 2022-09-27 Illinois Tool Works Inc. Interchangeable cutting inserts and methods associated with the same
US20170326656A1 (en) * 2015-05-19 2017-11-16 Tungaloy Corporation Tool body and cutting tool
US10239134B2 (en) * 2015-05-19 2019-03-26 Tungaloy Corporation Tool body and cutting tool
US20180290220A1 (en) * 2017-04-10 2018-10-11 Fanuc Corporation Milling/cutting tool and processing apparatus
US10661361B2 (en) * 2017-04-10 2020-05-26 Fanuc Corporation Milling/cutting tool and processing apparatus
US20190160558A1 (en) * 2017-11-30 2019-05-30 Iscar, Ltd. Single-sided three-way indexable milling insert having high void volume to material volume ratio and insert mill therefor
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Also Published As

Publication number Publication date
GB320809A (en) 1929-10-24
DE520659C (en) 1931-03-13

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