US934776A - Multiple drilling-machine. - Google Patents

Description

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MULTIPLE DBILLING MACHINE.

APPLICATION FILED DBO. 5,1908.

Patented sepezl, 1909.

W. W. VOSPER." MULTIPLE DEI'LLING MACHINE. APPLICATION FILED DBO. 5, 190B.

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W. W. vosPER. MULTIPLE DRILLING MACHINE. APPLIO-ATION FILED vDIEU. 5,1908.

934,776. Patented sept. 21, 1909.

4 SHEETS-SHEET 4.

WITNESS ES:

UNITED sTATEs PATENT oEErcE.

WILLIAM W. VOSPER, OF TOLEDO, OHIO, ASSIGNOR TO THE SHAW-KENDALL ENG'INEER- ING COMPANY, OF TOLEDO,

OHIO, A CORPORATION 0F OHIO.

MULTIPLE DRILLING-MACHINE.

Specification of Letters Patent.

Patented Sept. 21, 1909.

Application led December 5, 190B. Serial No. 466,103.

To all whom tt 'may concern:

Be it known that l, WiLLIAn \V. VosrEn, a citizen of the United States, anda resident of Toledo, in the county of Lucas and State ofOhio, have invented a certain new and useful Multiple Drilling-Machine; and l do horeby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference. marked thereon, which forni a part of thisI specification.

My invention relates to drilling machines, and particularly to those of the multiple drill type, and has for one of its objects the provision in a machine of this character of simple and etiicient means for easily and quickly adjusting the drill-spindles in unison in the arcs of a connnon circle to change the positions thereof relative to the work as it may be desired to successively act thereon, thus obviating the slow and unsatisfactory f practice of adj usting'the work relative to the drills to enable the drills to successively opcrate thereon.

Q\ further and very important object of my invention is the provision of means for effecting an easy, accurate and rapid adjustment of the spindles in unison in the arcs of different circles to permit of a wide range of adjustment of the spindles relative to a common axis, thus adapting the machine to be adjusted to operate on various sizes of work.

The invent-ion is fully described in the following specification, and while in its broad aspect it may be embodied in numerous forms of machines, a preferred form thereof is shown in the accompanying` drawings, in which',-

Figure 1 is a perspective view of a machine embodying my invention. Fig. 2 is a plan view of the spindle-carrying head with the top casing removed. Fig. 3 is a side elevation of the spindle-carrying-lnaid with a part in section, as on a line a; a; in Fig. 2, and the power transmission on the top thereof removed. Fig. 4 is a plan view of such head with the powcr-transmission parts thereon. Fig. 5 is a vertical section of a part of the jioww-transmission mechanism taken on the liuc a a in Fig. 4. Fig. G is a vertical Referrino` to `t-he drawings, 1, l1 designate I the two columns or upright-s of a machine, which rise from the base-plateQ and are connected at their upper ends by a head-beam or cross-piece 3; #l the work-supporting table, which rests on the base-plate; 5 the work, and (S the templet, which is shown as being clamped to the work by the cooperating action of the cross-bar 7, bolt S, and handwheel 9, which latter is threaded tothe .bolt beneath the table top.

Having reference now tothe spindle-carrying head which .forms the essential feature of my invention, 10 designates a cross-head, which is of circular form and under-cored, as best shown in Fig. 3, to form a housing over the spindle operating and adjusting gearing, and has its opposite sides formed with kguidebosses 11, l1 provided With ribs working in grooved-Ways l2 in the inner sides of the columns 1 for guiding the vertical movements of the head. Journaled in the center of the cross-head or housing member 10 is a vertical shaft 13, whichhas its upper end projected through the head-beam 3 and its lower end projected below the cross-head and carrying a fixed spur-gear 14C and a subj acent loose master-wheel 15, which latter rests on a collar 16, (Fig. 2) that is fixed to the shaft. A plurality of castings or spindle-carrying members 17, in the present instance four in number, are disposed beneath the master- Wheel 15 and have their upper ends journaled in equidistantly spaced openings 18 provided concentrically in the master-Wheel, as shown in Figs. 3 and 8. The members 17 are each provided with axially offset portions 19 in the-outer ends of which are journaled the vertical drillcarrying-spindles 20, and have the upper ends of their journals projected above the master-wheel to renable pinion-gears 21 tobe keyed thereto, as shown in Figs. 3 and 8. These pinions mesh With a common ring-gear 22, which is mounted to turn on a bearing-rib or shoulder 23 formed concentrically on the upper surface of the master-wheel 15, see Fig. 3, thus adapting the members 17 for rotary adjustment in unison when any one of them is turned on its axis. v

Projectin axially through each member 17 is a vertlcal shaft 24, which has a spurgear keyed to its upper end immediately above the associated inion 21 for meshing with the gear 14 carried by the shaft 13, see Figs. 2, 3 and 8, and has a spur-gear 27 keyed to its lower. end for meshin with a gear 28 on the lower portion of t e associated spindle 20, see Figs. 3 and 8, thus causing rotation to be communicated to the several spindles from the shaft 13. The spindles 20 are supported in their respective carryin parts 19 by collars 29, which are hreade to their upper ends and rest on the upper ends of the parts 19, and have their upper end thrusts against the under side of the master-wheel 15 through the medium of the ball-bearing thrust members 30, see Figs. 3 and 8, thus providing a firm thrust wall for the spindles in whatever position of adjustment they may be placed. The members 17 are locked in adjusted osition relative to the'master-wheel 15 by b ocks 31 (Fig. 8), which are carried at the under side of the lmaster-wheel by screws 32 and have lips for coaeting with annular flanges 33 at the upper en s of thel members 17 to prevent a turning thereof when said screws are tightened. While all of the members 17 may be locked in thismanner, it is apparent that a locking of only one would be suiiicient, as the several members are restricted to move in unison by the interconnecting caring.

34 designates-guards, one of which is secured to the lower portion of each of the members 17 by brackets 35, see Figs. 3 and 7, and encircle the gears 27 and 28. A guard-ring 36 is secured by screws 37 to the bottom edge of the houslng or cross-head 10 and projects inwardly therefrom under the edge of the master-wheel 14, see Figs. 1 2 and Journaled in one side' of the cross-head 10 in a suitable bearing provided therefor is a vertical shaft 38, see Figs. 2 and 4, which carries a hand-wheel 39 at its upper end and a pinion 40 at its lower end, which pinion meshes with peripheral teeth 41 on the master-wheel 15, thuscausing a turning of said Ihand-wheel to communicate rotation to the master-wheel 15 and effect a circular adjustment of the spindles 20 in the arcs of a common circle as it may be desired to shift their positions to enable them to successively act on the work.

rThe shaft 13 has rotation imparted thereto from a counter-shaft 42 (Fig. 1) through a set of bevel-gears (not shown) whichare mounted in a housing 43 carried by the cross-beam 3 ofl the" frame, and through one of which gears the shaft 13 is feathered to adapt it to have vertical reciprocatory movements relative thereto. 44 designates a beltpulley which is carried at the outer end of the shaft 42.

'lo facilitate a quickand accurate finding of any desired range of what may be termed radial adjustment of the spindles 20 when their carrying members 17 are relatively rotated, I suspend a curved dial-bar' 45 from the bottom of the master-wheel 15 in front of one of the members 17 and-attach an'index-inger 46 to' such member, the outer end of which linger is intended to move longitudinally of the dial-bar and register with the graduations thereon when the member is turned, said bar being curved to conform to the arc of movement of the index-linger end, as indicated in Figs. 2 and 3.

In order to effect a -slow downward feed of the spindle-carrying ,head during the drilling operation, the shaft 13 carries a worm 47, see Fig. 6, in mesh with a worm-wheel 48carried by a counter-shaft 49, which shaft in turn carries a worm 50 in mesh with a worm-wheel 51, which is keyed to a sleeve 52 mounted loosely on the rack-'shaft 53, sec Figs. 4, 5 and 6. The shaft 49 has its inner end suitably journaled in the housing 54 which is mounted on the cross-head 10 and inclosing the transmission gears, while the shaft 53, in addition to journaling in said housing, has its end ortionsjournaled in bearing-blocks 55, (Fig. 1), which are secured to the sides of the guide-bosses 11. The ends of the shaft 53 project beyond the bearing-blocks 55 and lare .peripherally toothed, as at 5G, to form pinions for meshing with vertical rack-bars 5.7, 57 secured to the columns 1, 1, sce Fig. 1. As it is sometimes desired to lower the spindle-carrying head by hand, the worm-wheel 48 instead of being secured directly to the shaft 49 is keyed to the extended portion of a friction clutch member 58, which is loosely carried by the shaft 49 and has its periphery formed with the outwardly projecting flange 5S), which is shown as having a bearing 1n the open end 60 of the housing 54, thus assisting in supporting the shaft 49. A companion clutch member 61 is feathered to the shaft 49 withoutJ 'the member 58 and when forced into engagement with the inner face of the flange 59 cooperates with the member 58 to impart rotation to said shaft from the worm-wheel 48. The clutch member 61 has its hub extended to near the outer end of the shaft 49 and is engaged at such end by the hub of a hand-wheel 62, which is threaded to the shaftend and adapted to be moved to force the clutch member 61 into engagement with its companion or to permit a release thereof. A hand-wheel 63 is keyed to the outer end of the hub of the clutch member 61 to facilitate a turning of such member and the shaft 49 by hand.

A clutch-sleeve 64 is feathered. to the rackl'lll lli bar 53,- and is intended to cooperate with the contiguous end of the sleeve 52, when moved into clutch engagen'ient therewith, to impart rot-ation to said shaft from the worm-wheel 51, see Figs; 4 and 6. '.lhe clutch-sleeve 64 has its movements controlled by a lever 65, which is fulci'rumed to the cross-head top, as at 66, Fig. 4, and has its inner end form-ed with teeth which mesh with annular ribs on the sleeve 64, as shown.

For the purpose of effecting a rapid raising or lowering of the spindle-carrying head independent of the mechanism above described, I connect thetop of the cross-head 10 by a chain, or other suitable draft means,

67 to the upper end of a piston-rod 68 which I. projects through the top of a vertical cylinder 69 at one side of the frame and carries a piston (not shown) at its inner end which works in said cylinder. The draft-means 10 -works over a sheave 70 at one'end of the cross-beam Bof the frame and another sheave (not shown) which is carried by a shaft 71 near the center of the cross-beam. On the opposite side of the fraine'to the cylinder 69 or in any other suitable position is located another cylinder 72, which is preferablyy filled or partially filled with oil or other suitable opera-ting liquid and communicates at 'its lower end with the upper end of the cylinder 69 through a pipe 7 3. Air or other suitable fluid under pressure is admitted to the top .of the cylinder 72 through a pipe 74 and is exhausted therefrom through an opening 75 into which an exhaust-pipe may be threaded. The inlet and outlet ports for the air are controlled by a suitable valve of which 76 is the handle.

77 designates a vent pipe which leads from the lower end of the cylinder 69. To effect an elevation of the spindle-carrying head, fluid under pressure is admitted to the top of the cylinder 72 above the oil oi` other liquid therein by a turning of the handle 76 in the proper direction for such purpose,

v cylinder through the pipe 73 and into the top of the cylinder 69 above the piston therein. As the liquid enters the cylinder 69 the piston and its rod68 are forced down, thus moving the chain 67 to raise the spindle-earrying head. To lower such head the valvehandle 76 is turned to close the inlet port andopen the exhaust port 75 from the cylinder 72, thus permitting a rapid exhaust of the actuating fluid from such cylinder and a return of the oil or other liquid thereto as the piston raises under the weight of the spindle-carrying head.

'lhe operation of myinvention is as follows :-The work 5 and 'templet 6 having been placed on the table 4, the operator moves the valve-handle 76 to open the exhaust port 75, thus permitting the spindlecarrying head to run down to place the drill poiuts'in contiguous relation to the templet to enable it. to be adjusted to position a set of holes therein in register with such drill points before clamping the templet and work to the table by a tightening of the bolt 8 on the clan'ip-bar 7. This having been done, the operator moves the controller-lever 65 to throw the clutch-sleeve 64 on the rack-shaft 53 into engagement with the loose sleeve 52 carrying the worm-wheel, thus causing rotation to be communicated to the ram-shaft 53 from the driven shaft 13 through the medium of the worm and worm- wheel 47 and 48, friction-' clutch members 58 and 61, which are in engagement, shaft 49, and worm and worm-wheel 50 and'lil, whereby to elfect a properly timed slow lowering movement of the drills through the work due to the pinioned ends of the shaft 53 working in the rack-bars 57, .57 carried by the columns 1, 1. The drill spindles are driven from the shaft 123 through the intermediate set of gears 14 and 25, shafts 24, and second set of gears 27 and 28. The drilling of the holes being completed the lever 65 is thrown to release the engagement of the clutch- sleeves 52 and 64 after which the air-valve handle 76 on the cylinder 72 is moved to admit Huid-pressure to the top of the cylinder 72, thus forcing thel oil or other liquid in said cylinder to the other cylinder 69 on top of the piston therein and effecting a rapid ascent of the spindle-carrying head. The drills are now shifted in unison in the arcs of a common circle to place them in position to again act on the work by merely turning the hand-wheel 22,9 carried by the shaft 38 to effect. a turning of the master-wheel 15 and relatively fixed drill-carrying spindles 20 the desired distance. To adjust the spindlesfor operating ondiiferent sizes of work or for drilling two or more sets of concentrically arranged holes in the same piece of work it is only necessary to loosen the blocks 31, which coact with the ianges 33 of the spindle-carrying members to lock them against movement relativeto the master-wheel 15, and then to take hold of the outer or spindle-carrying end of one of the members 17 and swing it to the desired position of adjustment relative to the axis of the wheel 15. As one member 17 is swung about its axis the other spindle-carrying members will be caused to swing the same distance in unison therewith, due to the ring-gear 22 meshing with the gear 21 on the journal end of each member. The operator by watching the movement of the index-finger 46'along the face of the dial-bar 45 can tell when the desired position of adjustment is reached. The members 17 being adjusted, they are again locked to the master-wheel by a tightening of the blocks 31 thereon. lt is apparent with this manner of adjusting the spindles that a very wide range of adjustment thereof may be had, as such adjustment is only limited by the size of the circle which can be described by a spindle relative to the master-wheel, and this of course depends upon the length of throw of the members 17 I desire to be understood that my invention 4is not limited to any specific form, arrangement or size of parts except in so far as such limitations are specified in the claims.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is,-

1. In a machine of the class described, the combination of a shaft mounted for rotary and longitudinal reciprocatory movements, a master-wheel loosely carried by said shaft, a part rotatably carried by said masterwheel, a spindle carried by said part for adjust-ment therewith around the axis of said part gearing for communicating rotation to the spindle from the shaft.

2. In a machine of the class described, the combination of a shaft mounted, for rotary and longitudinal reciprocatory movements, a master-wheel loosely carried by said'shaft, a plurality of members pivotally carried by sald wheel, a spindle carried by each of said members for adjustment therewith around the axis of such member, means for communicating rotation` from the shaft to the spindles, and means for causing a like adjustment to be communicated to all of said members when any one is turned relative to the master-wheel.

3. In a machine of the class described, the combination of a shaft mounted for rotary and longitudinal movements, a master-wheel carried therebyy for relative rotary adjustment, a plurality of parts carried by said wheel for rotary movements relative thereto, and having their axes parallel to said shaft, a

lcombination of a frame, a cross-head movable in said frame and forming a housing, a main shaft journaled in said cross-head, a master-wheel loosely carried by the shaft and having a plurality of openings therethrough, spindle-carrying parts j ournaled in said openings, a shaft axially journaled in each part, a spindle carried by each. part at one side of its axis, means for communicating motion to the spindles from the main shaft through said other shafts, and means for causing. said parts to rotate in unison throu 0`h 5. Iii a spindle-carrying head, the combination of a bas e fpar t,1a member rotatably carried by said part, as indle carried at the free end of saidlmem er and having its inner end thrust against said base part, and means for driving the spindle.

- 6. In a machine of the class described, the combination of a head, a plurality of members rotatably carried by said head, a spindle carried at the free end of each member, antifriction thrust means disposed between the4 C. W. OWEN, IIAZEL B. IIIETT.

partial circles relative to said wheel.

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