US3138042A - Cross drilling, milling and slotting attachment for multiple spindle screw machines - Google Patents

Cross drilling, milling and slotting attachment for multiple spindle screw machines Download PDF

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US3138042A
US3138042A US244351A US24435162A US3138042A US 3138042 A US3138042 A US 3138042A US 244351 A US244351 A US 244351A US 24435162 A US24435162 A US 24435162A US 3138042 A US3138042 A US 3138042A
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cross
driven shaft
cam
spindles
horizontal
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US244351A
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Valere J Collin
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
    • B23G1/08—Machines with a plurality of working spindles
    • B23G1/10—Machines with a plurality of working spindles specially adapted for making conical screws, e.g. wood-screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G7/00—Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
    • 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
    • Y10T408/36—Machine including plural tools
    • Y10T408/365—Axes of tools moving with work during operation
    • Y10T408/367—Axes of tools moving with work during operation including means to infeed Tool and means to infeed work or including coaxial tools
    • 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
    • Y10T408/36—Machine including plural tools
    • Y10T408/365—Axes of tools moving with work during operation
    • Y10T408/368—Plural work stations

Definitions

  • One object of the present invention is to provide an attachment of the above nature, which will be relatively simple in construction, inexpensive to manufacture, easy to install and manipulate, compact, ornamental in appearance, and very efficient and durable in use.
  • FIG. 1 illustrates a cross-sectional view in elevation of an automatic Davenport Screw Machine, in which the present invention has been installed.
  • FIG. 2 is a fragmentary end view of the same, taken from the line 2-2 of FIG. 1, showing the yoke for feeding the cam sleeve which operates the cross spindles.
  • FIG. 3 is a fragmentary longitudinal sectional view, taken along the line 3-3 of FIG. 2.
  • FIG. 4 is a cross sectional view of the cross spindle housing, taken along the line 4-4 of FIG. 3.
  • FIG. 5 is a cross-sectional View, taken along the line 5-5 of FIG. 4, showing the pivot pins for the cam arms, and the bearings for the cross drill spindles.
  • FIG. 6 is an end sectional view of the cam feed yoke and the cross drill operating mechanism, taken along the line 6-6 of FIG. 5.
  • FIG. 7 is a cross-sectional view, taken along the line 7--7 of FIG. 6, showing two of the opposite cam arms at the start of the feed of the cross drills.
  • FIG. 8 is a similar cross-sectional View, showing the other two opposite cam arms at the end of their feed.
  • FIG. 9 is a similar cross-sectional view of the rst two operating cam arms shown in FIG. 7, one of which is in feeding position and the other is released.
  • FIG. 10 is a cross-sectional view, similar to FIG. 8, of the other two opposed cam arms at the end of the feed, one drill being released and the other drilling a hole in the work piece.
  • FIG. l1 is a schematic view similar to FIG. 7, of the cross drill mechanism showing one of the cam arms in operating position for driving a drill inwardly, and the opposite ca m arm in released position.
  • FIG. l2 is a similar schematic view, showing both of the cam arms in released positions.
  • FIG. 13 is a similar schematic view of the opposed cam arms, with one of the cross drills shown in the process of clearing out the hole, and the other cross drill in released position.
  • FIG. 14 is a schematic View showing all four of the drills operating simultaneously to produce four recesses in a solid rod.
  • FIG. 15 is a schematic view of the same, in which one of said drills is in position for clearing out the hole, and two of the drills are idle.
  • FIG. 16 is a schematic view of the same, with three of the cross drills idle and the fourth cross drill in position for clearing out the hole in the work piece.
  • the numeral 20 indicates the base casting of 3,138,042 Patented June 23, 1964 FPlee a standard multiple spindle Davenport Screw Machine, having upstanding front and rear arms 21 and 22 for supporting a horizontal central drive shaft 23, said shaft having a drive gear 24 rigidly mounted thereon, as by a set screw 24a.
  • the numeral 25 indicates a gear secured to a horizontal driven shaft 26 by means of a set screw 25a.
  • the driven shaft 26 is mounted in antifriction bearings 27, 28 and the center drive shaft 23 is mounted in similar bearings 29, 30, as clearly shown in FIG. l of the drawing.
  • the numeral 33 indicates a vertical yoke of semicircular construction, which is secured by means of a set screw 34 on a horizontal yoke operating rod 35, smaller than and parallel to the shafts 23 and 26.
  • the yoke 33 is provided with a pair of curved depending side saddle arms 36, 37, which are located in a circular slot 38 formed in a cylindrical sleeve 39, as shown in FIGS. 1 and 2 of the drawing.
  • the numerals 40, 41, 42, 43 indicate four cross spindles mounted in a housing at right angles to each other, said spindles being surrounded by anged antifriction bearings 46a, 41a, 42a, 43a.
  • the cross spindles 40, 41, 42, 43 have threaded inner ends, on which are mounted four cutting tools 44, 45, 46, 47.
  • the numeral 50 indicates generally a cam feed block mounted in brackets secured to the base casting 20.
  • the turn buckle 48 comprises a pair of right-hand and left-hand end threaded sections 51, 52, the latter being joined to a connector block 53, by a pin 53a.
  • the turn buckle 49 similarly comprises right-hand and left-hand threaded sections 54, 55, the latter being connected to a tapped connector block 56 by a pin 56a.
  • the numeral 57 (FIG. 1) indicates a special yoke feed plate cam, and the numeral 58 indicates a vertical block which is secured rigidly to a stationary rod 63 located within the horizontal shaft 26.
  • the numeral 62 (FIGS. 3 and 6) indicates a hollow gear secured to the stationary rod 63 located within the interior of the driven shaft 26.
  • the gear 62 is held rigidly in position by a lock nut 64, as clearly shown in FIGS. 3 and 6 of the drawing, and said gear is provided with a keyway 65 (FIG. 3) for receiving a key 66 located upon the rod 63.
  • spools 76, 77, 78, 79 which are mounted to move in and out within the spindle housing 75 and are connected rigidly as by lock screws 80, 81, S2, 83 (FIG. 4) to said cross spindles 40, 41, 42, 43 respectively.
  • the cross drills 44, 45, 46, 47 are adapted to be operated automatically by means of four cam arms 84, 85, 86, 87 (FIGS. 3, 4, 7, 8, 9 and 10), each of which are pivot- “9 ally mounted on short horizontal bearing pins 38 (FIGS. and 6) within a cylindrical rear housing 94.
  • Each of the bearing pins 88 are provided with a threaded end 88a and an enlarged head 88h, as clearly shown in FIG. 5.
  • Each of the cam arms 84, 85, 86, 87 is provided with a fork 39 embracing a paii of small needle bearings 9G (FIG. 5), located within the interior of the spools 76, 77, 78, 79, respectively.
  • the bearings 90 are mounted upon cross pins 91 secured in the forks 89 of the cam arms 84, 85, 86 and 87.
  • the heads 8811 of the bearing pins 88 are located in cylindrical clearance cavities 92 (FIG. 5).
  • the cam arms S4, 85, S6, 87 are pressed outwardly by means of four small coil springs 93 (FIG. 6), located in recesses in said cam arms and the rear support 94. Provision is also made of four horizontal screws 9S which serve to secure the rear support 94, to the spindle housing 75.
  • the horizontal spindle 26 will be driven by the gears 24 and 25 and caused to rotate the spindle housing 75 around the work W coaxial therewith, said work being rotated at the same speed. All four of the cross spindles 40, 41, 42, 43, will thus be revolved about the work simultaneously, and will be moved inwardly by the cam arms S4, 85, S6, 87 to carry the cutting tools 44, 45, 46, 47 inwardly into the work W.
  • the sleeve 39 which is embraced by the saddle arms 36, 37 of the yoke 33 will engage all of the cam arms 84, 85, 85, S7 simultaneously, thus forcing the cross spindles 40, 41, 42, 43 and the cutting tools 44, 45, 46, 47 against the work W.
  • four recesses may be drilled simultaneously (FIG. 14) in the outer surface of a solid rod, or any selected one of the cutting tools may be forced entirely through the work piece to clean it out (FIGS. 15, 16).
  • a base having a pair of upstandng front and rear bearing arms for supporting a horizontal main drive shaft and a hollow driven shaft parallel with said main shaft, a drive gear fixed on said main shaft, a driven gear fixed on said driven shaft and meshing with said drive gear, a cylindrical sleeve mounted on the outer end of said driven shaft and having a circular slot on the pcriphery thereof, a forked yoke having a pair of curved saddle arms located in said slot, a horizontal cam driven rod located above said driven shaft and fixed to said yoke for advancing 'said sleeve, a housing connected to said driven shaft located adjacent said sleeve and having four equally spaced radial cross spindles located therein, each of said cross spindles carrying a cutting tool on its inner end and having a pinion intermediate its ends, a hollow circular gear meshing with each of said pinions to rotate said cutting tools simultaneously, said hollow gear being secured to
  • cam means is provided on said base in alignment with said yoke rod to drive the latter forwardly and cause said cutting tools to engage said work piece.

Description

V. J. COLLIN June 23, 1964 FOR MULTIPLE SPINDLE SCREW MACHINES 5 Sheets-Sheet 1 Filed Dec. l5, 1962 INVENTOR. l/Ff/ ERE d'. COLL/N WHW? FI'TTORNEY June 23, 1964 v. .1. COLLIN 3,138,042
@Ross DRTLLTNG, MILLING AND sLoTTTNG ATTACHMENT FOR MULTIPLE SPINDLE SCREW MACHINES Filed Dec. l5, 1962 5 Sheets-Sheet 2 w i' my.
Wlllllllllllllllllll FITTORNEY V. J. COLLIN CROSS DRILLING, MILLING AND SLOTTING ATTACHMEN FOR MULTIPLE SPINDLE SCREW MACHINES Filed Deo. 13, 1962 5 Sheets-Sheet 3 INVENTOR. I/F/LERE J. COLL/N mum",
HTTOR/YEY v. J. COLLIN 3,138,042 cRoss DRTLLING, MILLING AND sLoTTTNG ATTACHMENT June 23, 1964 FOR MULTIPLE SPINDLE SCREW MACHINES 5 Sheets-Sheet 4 Filed Dec. l5, 1962 36 4/2 INVENTOR l/FILERE J.' COLL/N m4n/91M? 53k 72%@ I i HTTORNEY V. J. COLLIN June 23, 1964 CROSS DRILLING, MILLING AND SLOTTING ATTACHMEN FOR MULTIPLE SPINDLE SCREW MACHINES 5 Sheets-Sheet 5 Filed Deo. 13, 1962 INVENTOR. VF/LERE J. COLL/N HTTORNEY United States Patent 3,138,042 CROSS DRILLING, MILLING AND SLOTTING AT- TACHMENT FOR MULTIPLE SPINDLE SCREW MACHINES Valere II. Collin, Waterbury, Conn. (47 Wilson Road, Wolcott, Conn.) Filed Dec. 13, 1962, Ser. No. 244,351 3 Claims. (Cl. 77-26) This invention relates to screw machines, and more particularly to a milling or slotting attachment for an automatic multiple spindle screw machine.
One object of the present invention is to provide an attachment of the above nature, which will be relatively simple in construction, inexpensive to manufacture, easy to install and manipulate, compact, ornamental in appearance, and very efficient and durable in use.
With these and other objects in View, there has been illustrated on the accompanying drawings, one form in which the invention may conveniently be embodied in practice.
In the drawings:
FIG. 1 illustrates a cross-sectional view in elevation of an automatic Davenport Screw Machine, in which the present invention has been installed.
FIG. 2 is a fragmentary end view of the same, taken from the line 2-2 of FIG. 1, showing the yoke for feeding the cam sleeve which operates the cross spindles.
FIG. 3 is a fragmentary longitudinal sectional view, taken along the line 3-3 of FIG. 2.
FIG. 4 is a cross sectional view of the cross spindle housing, taken along the line 4-4 of FIG. 3.
FIG. 5 is a cross-sectional View, taken along the line 5-5 of FIG. 4, showing the pivot pins for the cam arms, and the bearings for the cross drill spindles.
FIG. 6 is an end sectional view of the cam feed yoke and the cross drill operating mechanism, taken along the line 6-6 of FIG. 5.
FIG. 7 is a cross-sectional view, taken along the line 7--7 of FIG. 6, showing two of the opposite cam arms at the start of the feed of the cross drills.
FIG. 8 is a similar cross-sectional View, showing the other two opposite cam arms at the end of their feed.
FIG. 9 is a similar cross-sectional view of the rst two operating cam arms shown in FIG. 7, one of which is in feeding position and the other is released.
FIG. 10 is a cross-sectional view, similar to FIG. 8, of the other two opposed cam arms at the end of the feed, one drill being released and the other drilling a hole in the work piece.
FIG. l1 is a schematic view similar to FIG. 7, of the cross drill mechanism showing one of the cam arms in operating position for driving a drill inwardly, and the opposite ca m arm in released position.
FIG. l2 is a similar schematic view, showing both of the cam arms in released positions.
FIG. 13 is a similar schematic view of the opposed cam arms, with one of the cross drills shown in the process of clearing out the hole, and the other cross drill in released position. v
FIG. 14 is a schematic View showing all four of the drills operating simultaneously to produce four recesses in a solid rod.
FIG. 15 is a schematic view of the same, in which one of said drills is in position for clearing out the hole, and two of the drills are idle.
FIG. 16 is a schematic view of the same, with three of the cross drills idle and the fourth cross drill in position for clearing out the hole in the work piece.
Referring now to the drawings, in which like reference numerals denote corresponding parts throughout the several views, the numeral 20 indicates the base casting of 3,138,042 Patented June 23, 1964 FPlee a standard multiple spindle Davenport Screw Machine, having upstanding front and rear arms 21 and 22 for supporting a horizontal central drive shaft 23, said shaft having a drive gear 24 rigidly mounted thereon, as by a set screw 24a.
The numeral 25 indicates a gear secured to a horizontal driven shaft 26 by means of a set screw 25a. The driven shaft 26 is mounted in antifriction bearings 27, 28 and the center drive shaft 23 is mounted in similar bearings 29, 30, as clearly shown in FIG. l of the drawing.
Provision is also made of a pair of upstanding brackets 31 and 32, which are rigidly mounted on the tops of the front and rear arms 21, 22, respectively.
The numeral 33 indicates a vertical yoke of semicircular construction, which is secured by means of a set screw 34 on a horizontal yoke operating rod 35, smaller than and parallel to the shafts 23 and 26. The yoke 33 is provided with a pair of curved depending side saddle arms 36, 37, which are located in a circular slot 38 formed in a cylindrical sleeve 39, as shown in FIGS. 1 and 2 of the drawing.
The numerals 40, 41, 42, 43, indicate four cross spindles mounted in a housing at right angles to each other, said spindles being surrounded by anged antifriction bearings 46a, 41a, 42a, 43a. The cross spindles 40, 41, 42, 43 have threaded inner ends, on which are mounted four cutting tools 44, 45, 46, 47.
In order to adjust the longitudinal position of the yoke operating rod 35, provision is made of a pair of turn buckles 48, 49, as clearly shown in FIG. 1 of the drawing.
The numeral 50 indicates generally a cam feed block mounted in brackets secured to the base casting 20.
The turn buckle 48 comprises a pair of right-hand and left-hand end threaded sections 51, 52, the latter being joined to a connector block 53, by a pin 53a. The turn buckle 49 similarly comprises right-hand and left-hand threaded sections 54, 55, the latter being connected to a tapped connector block 56 by a pin 56a.
`The numeral 57 (FIG. 1) indicates a special yoke feed plate cam, and the numeral 58 indicates a vertical block which is secured rigidly to a stationary rod 63 located within the horizontal shaft 26.
Provision is also made of a horizontal stud bolt 59 having a threaded end 60 screwed into a tapped cavity 61 in the rear vertical arm 22.
The numeral 62 (FIGS. 3 and 6) indicates a hollow gear secured to the stationary rod 63 located within the interior of the driven shaft 26. The gear 62 is held rigidly in position by a lock nut 64, as clearly shown in FIGS. 3 and 6 of the drawing, and said gear is provided with a keyway 65 (FIG. 3) for receiving a key 66 located upon the rod 63.
Provision is also made of a heX nut 67 at the opposite end of the rod 63, which engages a washer 68 and has a key 68a and a keyway 68h for holding this end of said rod rmly in the block 58. Provision is also made of a pair of bronze bushings 69, 70, located at the opposite ends of the rod 63 and fitted within the hollow spindle 26.
In order to simultaneously rotate the spindles 40, 41, 42, 43 and the tools 44, 45, 46, 47 of the cross drill mechanism, provision is made of four drill gears 71, 72, 73, 74 (FIG. 4) each of which is adapted to mesh with the gear 62 previously mentioned, and are located within the cylin- .drical housing 75.
Located within the spindle housing 75 are four spools 76, 77, 78, 79 which are mounted to move in and out within the spindle housing 75 and are connected rigidly as by lock screws 80, 81, S2, 83 (FIG. 4) to said cross spindles 40, 41, 42, 43 respectively.
The cross drills 44, 45, 46, 47 are adapted to be operated automatically by means of four cam arms 84, 85, 86, 87 (FIGS. 3, 4, 7, 8, 9 and 10), each of which are pivot- "9 ally mounted on short horizontal bearing pins 38 (FIGS. and 6) within a cylindrical rear housing 94. Each of the bearing pins 88 are provided with a threaded end 88a and an enlarged head 88h, as clearly shown in FIG. 5.
Each of the cam arms 84, 85, 86, 87 is provided with a fork 39 embracing a paii of small needle bearings 9G (FIG. 5), located within the interior of the spools 76, 77, 78, 79, respectively. The bearings 90 are mounted upon cross pins 91 secured in the forks 89 of the cam arms 84, 85, 86 and 87.
The heads 8811 of the bearing pins 88 are located in cylindrical clearance cavities 92 (FIG. 5). The cam arms S4, 85, S6, 87 are pressed outwardly by means of four small coil springs 93 (FIG. 6), located in recesses in said cam arms and the rear support 94. Provision is also made of four horizontal screws 9S which serve to secure the rear support 94, to the spindle housing 75.
Operation In the operation of the improved cross drill attachment herein disclosed, the horizontal spindle 26 will be driven by the gears 24 and 25 and caused to rotate the spindle housing 75 around the work W coaxial therewith, said work being rotated at the same speed. All four of the cross spindles 40, 41, 42, 43, will thus be revolved about the work simultaneously, and will be moved inwardly by the cam arms S4, 85, S6, 87 to carry the cutting tools 44, 45, 46, 47 inwardly into the work W.
The sleeve 39 which is embraced by the saddle arms 36, 37 of the yoke 33 will engage all of the cam arms 84, 85, 85, S7 simultaneously, thus forcing the cross spindles 40, 41, 42, 43 and the cutting tools 44, 45, 46, 47 against the work W. If desired, four recesses may be drilled simultaneously (FIG. 14) in the outer surface of a solid rod, or any selected one of the cutting tools may be forced entirely through the work piece to clean it out (FIGS. 15, 16).
While the screw machine attachment is herein illustrated for use with cross drills, it will be understood that milling and slotting tools may also be attached to the cross spindles within the spirit and scope of the invention.
While there has been disclosed in this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not limited to the specific disclosure, but may be modified and embodied in various other equivalent forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claims.
Having thus fully described the invention, what is claimed as new and for which it is desired to secure Letters Patent is:
l. In a cross drill attachment for a multiple spindle screw machine, a base having a pair of upstandng front and rear bearing arms for supporting a horizontal main drive shaft and a hollow driven shaft parallel with said main shaft, a drive gear fixed on said main shaft, a driven gear fixed on said driven shaft and meshing with said drive gear, a cylindrical sleeve mounted on the outer end of said driven shaft and having a circular slot on the pcriphery thereof, a forked yoke having a pair of curved saddle arms located in said slot, a horizontal cam driven rod located above said driven shaft and fixed to said yoke for advancing 'said sleeve, a housing connected to said driven shaft located adjacent said sleeve and having four equally spaced radial cross spindles located therein, each of said cross spindles carrying a cutting tool on its inner end and having a pinion intermediate its ends, a hollow circular gear meshing with each of said pinions to rotate said cutting tools simultaneously, said hollow gear being secured to the end of a horizontal rod fixed within said hollow driven shaft, each of said cross spindles having a spool secured thereto near its outer end for rotation therewith, said sleeve cylindrical having four interior cam surfaces, four spring pressed cam arms pivotally mounted in a support connected to said housing, and having lugs thereon for engaging said cam surfaces the outer ends of said cam arms being forked and provided with inwardly extending pins fitted within the opposed sides of said spools, whereby a horizontal rotating work piece located coaxially within the center of said spindles may be operated upon simultaneously by said four cutting tools.
2. The invention as defined in claim l, in which cam means is provided on said base in alignment with said yoke rod to drive the latter forwardly and cause said cutting tools to engage said work piece.
3. The invention as defined in claim 2, in which a horizontal stud is fixed to the rear arm of said base and a vertical block on said base located in abutment with a nut fixed on the end of the horizontal rod in said hollow driven shaft.
References Cited in the file of this patent UNITED STATES PATENTS 739,501 Meyers Sept. 22, 1903 2,467,399 Moyer Apr. 19, 1949 FOREIGN PATENTS 354,386 Great Britain Aug. 10, 1931

Claims (1)

1. IN A CROSS DRILL ATTACHMENT FOR A MULTIPLE SPINDLE SCREW MACHINE, A BASE HAVING A PAIR OF UPSTANDING FRONT AND REAR BEARING ARMS FOR SUPPORTING A HORIZONTAL MAIN DRIVE SHAFT AND A HOLLOW DRIVEN SHAFT PARALLEL WITH SAID MAIN SHAFT, A DRIVE GEAR FIXED ON SAID MAIN SHAFT, A DRIVEN GEAR FIXED ON SAID DRIVEN SHAFT AND MESHING WITH SAID DRIVE GEAR, A CYLINDRICAL SLEEVE MOUNTED ON THE OUTER END OF SAID DRIVEN SHAFT AND HAVING A CIRCULAR SLOT ON THE PERIPHERY THEREOF, A FORKED YOKE HAVING A PAIR OF CURVED SADDLE ARMS LOCATED IN SAID SLOT, A HORIZONTAL CAM DRIVEN ROD LOCATED ABOVE SAID DRIVEN SHAFT AND FIXED TO SAID YOKE FOR ADVANCING SAID SLEEVE, A HOUSING CONNECTED TO SAID DRIVEN SHAFT LOCATED ADJACENT SAID SLEEVE AND HAVING FOUR EQUALLY SPACED RADIAL CROSS SPINDLES LOCATED THEREIN, EACH OF SAID CROSS SPINDLES CARRYING A CUTTING TOOL ON ITS INNER END AND HAVING A PINION INTERMEDIATE ITS ENDS, A HOLLOW CIRCULAR GEAR MESHING WITH EACH OF SAID PINIONS TO ROTATE SAID CUTTING TOOLS SIMULTANEOUSLY, SAID HOLLOW GEAR BEING SECURED TO THE END OF A HORIZONTAL ROD FIXED WITHIN SAID HOLLOW DRIVEN SHAFT, EACH OF SAID CROSS SPINDLES HAVING A SPOOL SECURED THERETO NEAR ITS OUTER END FOR ROTATION THEREWITH, SAID SLEEVE CYLINDRICAL HAVING FOUR INTERIOR CAM SURFACES, FOUR SPRING PRESSED CAM ARMS PIVOTALLY MOUNTED IN A SUPPORT CONNECTED TO SAID HOUSING, AND HAVING LUGS THEREON FOR ENGAGING SAID CAM SURFACES THE OUTER ENDS OF SAID CAM ARMS BEING FORKED AND PROVIDED WITH INWARDLY EXTENDING PINS FITTED WITHIN THE OPPOSED SIDES OF SAID SPOOLS, WHEREBY A HORIZONTAL ROTATING WORK PIECE LOCATED COAXIALLY WITHIN THE CENTER OF SAID SPINDLES MAY BE OPERATED UPON SIMULTANEOUSLY BY SAID FOUR CUTTING TOOLS.
US244351A 1962-12-13 1962-12-13 Cross drilling, milling and slotting attachment for multiple spindle screw machines Expired - Lifetime US3138042A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739501A (en) * 1902-11-18 1903-09-22 Jacob Meyers Drill.
GB354386A (en) * 1930-05-10 1931-08-10 George Adcock Multiple spindle drilling and like machines
US2467399A (en) * 1946-10-02 1949-04-19 Moyer Edward Tapering machine drilling attachment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739501A (en) * 1902-11-18 1903-09-22 Jacob Meyers Drill.
GB354386A (en) * 1930-05-10 1931-08-10 George Adcock Multiple spindle drilling and like machines
US2467399A (en) * 1946-10-02 1949-04-19 Moyer Edward Tapering machine drilling attachment

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