US1877277A - Vertical continuous drilling machine - Google Patents

Description

Sept. 13, 1932. F, M, DAVls 1,877,277

VERTICAL CONTINUOUS DRILLING MACHINE A TTORNEYS Sagt., i3, 1932. .Ef M, DAVIS l VERTICALQNTINUOUS DRILLIM MACHINE Filed Dec. '16, 1929 4 Sheets-Sheet 2 I N VEN TGR.

Sept. 13, 1932. F. M. DAVIS VERTICAL CONTINUOUS DRILLING MACHINE Filed Dec. 16. 1929 1 SheetsfSheet 5 IN VEN TOR.

A TTORNEYS Sepggls, 1932. M. DAP/1s, 1,877,277

VERTICAL CONTINUOUS DRILLING MACHINE i Filed Dec. 16. 1929 4 Sheefs-Sheet 4 INVENToR.

-TORNEYS a novel manner to eliminate friction.

Patented Sept. 13, 1932 Unirse stares; Partnr ortica FRANK M. DAVISLQF MILWAUKEE, WISCONSIN p VERTICAL CONTINUOUS DNILLING MACHINE Application :filed December l16,1929. Serial No. 414,460.

This invention relates to` improvements in vertical continuous drilling machines more particularly adapted for drilling a large number of like parts. Y Y

A further object of the invention is to provide a vertical continuous drilling machine having a plurality of drilling spindles arranged to permit continuous drilling and reaming of pistons, yolres, connecting rods, and so forth, which may be mounted on a moving part of the machine at one point and removed at another point,V the drilling or reaming operation being completed between the two points. Y i A further object of the invention is to provide a vertical continuous drilling machine in'which the drills or other work instrumentalities are automatically raised from the work when the operation is completed to permit removal of the completed parts and the mounting of other parts to be worked upon.

A further object of the invention is to provide .a vertical continuous drilling machine having pick-off gears betweenpdrive i' and transverse shaft and between transverse shaft and machine rotating shaft to permit various relative speed changes of the parts.

A further object of the invention is to provide a vertical continuous drilling machine in which the drill spindles and the supporting table are adjusted vertically to permit use of drills of diii'erent lengths and Work of varying sizes. a Y y i A further object of the invention is to providera vertical continuous drilling Amachine having a force feed oiling means for oiling the parts and the drills while cutting material.

A further object of the invention is to provide a vertical continuous drillingmachine having equalizing drive to spindles and rotation of machine and table.

A further object of the invention is to provide a vertical continuous .drilling machine having means for taking the end thrust of thetooth pressure of the gears.

A further object of the invention is to pro-` videa vertical continuous drilling -rnachine in which the double spur gear is mounted in i taken on line 9-9 of Fig. 8; `and A further object of the invention is to provide a vertical continuous'drilling ma# chine which Yis' of simple construction7 is strong anddurable and is well adapted for the purposes described. Y a

vWith the above and other objects in view the invention consists of the improved vertical continuous drillingmachine a-nd itsV parts vand combinations as set forthin the claims, and all equivalents thereof. n

- In the accompanying drawings in which the same reference characters indicate ythe same parts in all of the views: Fig. l is a vertical sectional view ofthe improved vertical continuous drilling machine; Y Fig. 2 is a horizontal a of taken on line 2-2 of Fig. 1;.

sectional view there- Fig is a similar view taken online 3--3fr of Fig. l; l 4 isV a vertical sectional view taken Von linel-lf of Fig. 1;

larger 'scaleshowing the means for adjustf ably supporting the spindle actuating cam;

Fig. 8 isa detail View partly in section of one of thespindles and connected parts;

Fig. 9 is a horizontal sectional detail view Fig. 10 is an enlarged detail sectional viewv of one of the ring gearspindle bearings.`

Referring tothe drawingsthe numeral 10 indicates a base member or support to which a vertical tubular standard l1 is connected.

A. circularcasing or frame 12, formedifor convenience of manufacture in several parts, is iixedly mounted on the upper end portion of the standard and at its upper end portion a horizontal shaftl?) is journaled and enclosedtherein. K An electricmotor 14 mounted on the upper portion ofthe casing l2 has a gear train connection l5V with one end of the upper horizontal shaft 13. The upper horizontalshaft also has a pair of bevel gears p. `16 mounted 'medially `of its length and a shaft opposite to the end connected ito the upper Lends gear train 15. The complementary clutch member 18 which is clutched to the shaft 13 by the clutch 17 has connected thereto a gear 19. Said gear forms part of a gear chain 2O mounted on short shafts -21 and 22 journaled in the circular casing. All of said shafts mentioned rotate in ball bearings 23 to reduce friction.

A clutch lever 17 depending from the casing 12 provides for moving the clutch member into and out of clutching engagementwith its complementary clutch member.

A casing cover 12" permits access to the geartrain 2O so that said gears may be removed and replaced by others of different relative diameters to change the, speed ratio of the parts to suit the work involved.

` A lower horizontal worm` sha-ft 24 journaled in the circular casing and extending at right angles to the upper shaft 13 hasra bevel gear driving connection 25 with the short" shaft 22, and at its opposite ends is provided with worms 26. The worms 26 mesh with worm wheels 27 which are mounted on the of short vertical shafts 28. Said vertical shafts are journaled in ball bearings 29 mounted in the circular casing 12', andv at their lower end portions are provided with pinions 30.

A vertically extending sleeve 31 journaled on the standard 11 is provided with a lower bearing portion 32'which rests-upon the base l' member 10 to support and Vpermit the freev turning of the sleeve thereon. Said bearing portion is extended to forman oil chamber 33 having a frustra-conical shaped4 cover V34 which extends into the oil chamber and is supported upon an annular lrib 35 extending inwardly from a medial portion of the outer wall of the oil chamber. The inclined wall of the cover directs the oil which drops from the work along its peripheral edge and into the oilchamberwhile preventingthe metalV borings from the work from entering `the said chamber. A rotary pump 36 mounted within the chamber `is driven by and'has a geared connection with a vertical shaft 37 which has a geared connection 37 with one of the spindle shafts 52. A flexible hose 38 connected to the pump and extending' upwardly to a discharge means 38 to points of use, is adaptedto supply oil t-o the work tools during their operation. i I

The upper circular casing 12 adjacent the upper end of the standard 11 andbeneathY the horizontal shaft 13 is'provided with ball bearings 39 to receive short vertical shafts 40.. Said shafts 40 are positioned on diametrically opposite sides of the standard 11 and the upper ends thereof are provided with bevel gears 41 which are in mesh with and driven by the bevel gears 16. The lower ends of the vertical shafts 4() are provided with ed on the upper end portion of the vertical- 1 ly extending sleeve 31 and the teeth 45 forming the gear are on the outer periphery thereof andl are in mesh with the pinions 30 which rotate the ring gear and connected parts.

A plurality of vertical rollers' 46 journaled 1` on shafts .47 projecting radially from the ring gear 45 support the double gear ring 44 and a plurality of horizontal rollers 47 journaled on vertical shafts 48 arranged in spaced relation around the ring gear 45 bear against the inner periphery of the double gear ring and in combination with the vertical-rollers form the bearing for said double gear ring K and take the side thrust'of the tooth pressureJ of meshing pinions.

A spindle sleeve tool carrier 49 mounted fast on the vertical sleeve 31 is provided with outwardly projecting vertically extending bearings 50 for slidably receiving spindle bearings 51 of the ball bearing end thrust type to reduce end thrust friction. Rotary spindles 52 journaled in said spindle bearings 51 extend slidably upwardly therefrom through rotary bearings 53 journaled inthe ring gear 45. The portions 52 ofthe spindles which extend slidably through the rotary bearings53 are longitudinally grooved or castellated to slidably connect with pinions 54 through which they extend. The hub portions of the pinions 54 extend above the bearings 53 to engage and rotate the spindles 52 while the pinions are inmesh with androtated by the lower and larger diameter gear 55 forming part of the double gear ring 44. The lower ends of the spindles have socket means 56 for receiving andholdingdrills or other work instrumentalities 57 for working on articles clamped to the supporting table or tables 58 vertically adjustably mounted on the vertical sleeve 31 and turning therewith. The tables 58 are provided with dovetail grooves 59 for convenience in clamping work or work holding igs thereto.

The lower portion of the upper circular casing 12 is provided with depending flat bolts 60 having lower eyed ends. The bolts are adjustably clamped tothe casing 12 by abolted band 61 between which and the'casing the bolts extend and nuts .62 threaded on i' the bolts for adjustably engaging the lower edges of the band and the casing to limit the Y upward movement of the bolts. A cam member 63 bolted to the inner side of the eyed ends of the bolts 60 extends, at a vertical angleycircumferentially approximately three quarters of the distance around t-he outer sides of the spaced reciprocal bearings 51'. Ball bearing rollers 64 jo-urna-led radially of the sleeves 31 and on the outer side portions of the reciprocal bearings 51 beneath the cam member 63,

Acn

tend, to permit the insertion of a toothedkeyV 67 to engage the rack teeth 67 to vertically adjust the bearings with relation to the collars. Bolts 68 clamp the collars in adjusted positions on the bearings.

Chains or cables 69 connected to vthe collars 65 and extending over pulleys 7 0 depend downwardly therefrom in wells 71, formed in the tool carrier or spindle sleeve Y4:9,.and `are connected to springs or counterweights 72 to yieldingly hold the rollers 64 bearing againstA the cam and the spindles in their upper position. v

Referring-to Fig. 6 the numeral 73 indi-V cates the point of engagement of the spindle bearing rollers with the cam and the number 74 the point of disengagement of said rollers.,

while the space 'jbetween said points is the time period during whichthe spindles are not moved vertically and the articles c are either clamped toor removed from the tables while the vertical sleeve upon which'the tables are mounted is relatively, slowly turning around the standard.

In operation the articles to be worked are mounted on jigs or other holding means on the tables and as theA tables turn to have their spindle'bearing rollers engage the cam portion 7 3 and the work instrumentalitywill be gradually moved downwardly to engage the work or the articles, and by the time each article reaches the point corresponding to the cam disengaging position of its respective spindle bearing roller, the work will be completed and the article removed and replaced by another during the travel through thespace 7 5 to provide for continuous operation of the machine. The clutch lever 17 provides for the manual control of the rotation,

of the vertical sleeve 31 and connected parts,

and if it is desired to change the speed of the the upper portion of the standard,.a sleeve journaled on the standard andhaving at its upper end fa plurality vof circumferentially spaced and vertically `reciprocal end thrust e bearings, a ring gear mounted on the upper end portion of the sleeve, a vertical Ashaft having a pinion in mesh with the ring gearv for rotating the sleeve, means for rotating the vertical shaft, pinions journaled on the ring gear in vertical alinement withthe bear- :f

ings, tool spindles Vfor holding lwork tools j ournaled in and extending through the bear` ings and slidably engaging the pinions and rotated thereby, a double gear ring journaled on rollers carried by the ring gear and in mesh with the pinions for rotating the tool spindles while they are being reciprocated and being carried by the sleeve, a vertical shaft carried bythe standard and havinga pinion meshing with one of the gears of the double gear ring for rotating said double gear ring, work holding members carried by the sleeve and positioned below the tool spindles, an oillreceiver located below the work holding members, a pump means for forcing oilfrom the receiver to the tool spindles, said bearings and tool: spindles being moved downwardlytowards'the work holding members bythe cam, and means for moving thebearings andthe tool spindles away from the work holding memberswhen th-e end of the cam is reached.

2. A vertical 'continuous drilling machine, comprising a base member having a vertical standard and a cam extending partly around the upper portion of the standard, a sleeve.

j ournaledon the standard and having at its upper end a'plurality of circumierentially spaced and .vertically reciprocal end thrust bearings, a ring gear mounted on the upper end portion of the sleeve, verticalsha'fts positioned on opposite sides of the ring gear and having pinions in mesh `therewith and at their upper ends having worm wheels, a horizontal shaft having wormsin mesh with the worm wheels, a second horizontal shaft havinga driving Connection with a motor, a

clutch and geared connection between the two horizontal shafts,pinions journaled on the ring gear in vertical alinement with the bearings, tool spindles for holding worl tools j ournaled in and extending through the bear# ings and'having a splinedl and slidable engagement with the pinions journaled on' the 1 ring gear, a double gear ring 'journaled on f rollers carried by the'ringgear and in mesh withV the tool spindle pinions,fvertical shafts carried l by the standard and positioned -on opposite Vsides ofthe double gear ringand.

having pinions in mesh withone oil the gears of said double gear ring, the upper end pore tions of said last mentioned vertical shafts f havinga Vgeared connection with the second horizontal shaft, work holding members carried bythe sleeve and positioned below the toolspindles', saidl spindles and bearings moved towards the work holding members by the cam, .and means for moving the spindles and bearings away from .the work holding members when the end of the cam is reached. Y

f3. A vertical continuous drilling machine, comprising a base member'having a vertical standard and a camrextending partly around the upper portion of the'standard, said cam member being vertically adj ustably connected to the standard, a sleeve journaled on the standard and having at its upper end a plurality of circumferentially Yspaced .and vertically reciprocal end thrust bearings, a ring gear mounted on the upper end portion of the sleeve,.vertical shaftspositioned on opposite sides of the ring gear and having pinions in mesh therewith and at their upper ends having worms, a horizontal shaft having worms in mesh with the `Worm wheels, a second horizontal shaft having a driving connection vwith a motor, a clutch and geared connection between the two horizontal'shafts, pinions journaled on the ring gear in vertical alinement with the bearings, tool spindles for holding work tools journaled in and extending through the bearings and having a splined and slidable engagement with the pinions journaled on the ring gear,

a double gear ring journaled on rollers car-Y ried by the ring gear and in mesh with the tool spindle pinions, vertical shafts carried by the standard and `positioned on opposite sides of the double gear ring and having pinions inmesh with one of the gears of said double gear ring, the upper Vend portions of said last mentioned vertical shafts having a geared connection with the second horizontal shaft, work holding members carried by the sleeve and positioned below the tool spindles,

` said spindles and bearings moved towards the work vholding members by the cam, and means for vmoving the spindles and bearings away from Vthe Work holding members when the end of the camis reached.

4. A continuous drilling machine, comprising a base member having a standardrand a` cam eXtendingpartly around the standard, a sleeve ournaled on the standard and having a plurality of circumferentially spacedl reciprocal end thrustbearings, a ring gear mounted on thesleeve, a shaft having a pinion in .mesh with the ring gear for rotating the sleeve, means-for rotating the shaft, pinions ournaled on the ring gear in alinement with the bearings, tool spindles for holding work tools Vjournaled in and extending through the bearings and slidably engaging the pinionsV and rotated thereby, a double gear ring journaled on the ring gear and in mesh with the pinions for rotating the tool spindleswhile they are being reciprocated and being carried by the sleeve, a shaft carried by the standard and having afpinion meshing with -one fof the gears ef .the double gear ring for rotating said double gear ring, work holding vmembers carried bythe sleeve and positioned at an end of the tool spindles,

an oil receiverrlocated near the worlcholding members, a pump meansfor forcing oil from the receiver to the tool spindles, said bearings and tool spindles being moved towards the work holding. members by the cam, and means for moving the bearings and the tool spindles away from the work holding members when.

the end of the cam is reached.

5. A continuous drilling machine, comprising a base member lhaving a standard andra cam extending partly around the standard, a

vsleeve journaled on the standard and having a plurality of circumferentially spaced re-V ciprocal end thrust bearings, a single ring gear mounted on the sleeve, shafts positioned on opposite sides of the ring gear and having pinions in mesh therewith and also ,carrying worm wheels, a second shaft having worms inv mesh with the worrnlwheels,y a third shaft h aving a driving connection with a motor, a clutch and geared connection between said second' andthird shafts, pinionsvjourna'led yon the ring gear in alinement Vwith the bearings, tool Aspindles for holding work tools journaledin and extending through the bearings and having a splined and slidable engagement with the pinions journaled on the ring gear,

a' double gear ring journaled on said single ring gear and in mesh with the tool spindle pinions, shafts carried by the standard and positioned `on opposite sides of the double gear ring andhaving pinions in mesh withv one ofthe gears of said double gear ring, the end portions of said -last ,mentioned shafts having Aa geared connection with said third shaft, work holding members carried bythe 'l sleeve and positioned at an end of the tool spindles, said spindles and bearings moved towards the work holding members by the cam, and means for moving the spindles and p shafts positioned on opposite sides of the ring'V gear and having pinions in mesh therewith and also having worms, a second shaft having worm wheelsin mesh with the worms, a third shaft having a driving connection with a motor, a clutch and geared connection between said second and third shafts, pinions j ournaled on the ring gear in alinement with the bearings, tool spindles for holding work tools journaled in and extending through the bearings and -having a'splined and slidable engagament with the pinions journaled on the single ring gear, a double gear ring journaled on rollers carried by the single ring gear and in mesh with the tool spindle pinions, shafts '5 carried by the standard and positioned on opposite sides of the double gear ring and having pinions in mesh with one of the gears of said double gear ring, the end portions of said last mentioned shafts having a geared connection with said third shaft7 work holding members carried by the sleeve vand positioned at an end of the tool spindles, said spindles and bearings being movable towards the work holding members by the cam, and means for moving the spindles and bearings away from the work holding members when the end of the cam is reached. In testimony whereof, I affix my signature.

FRANK M. DAVIS.

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