US1264349A - Multiple-drilling machine. - Google Patents

Description

' Gv 'Tl JR MULTIPLE omuma MACHINE.

APPLICATION FILED FEB. 2, l9|6- I Patented Apr. 80, 1918.

I 4 SHEETS-SHEET l- G. T. TRUNDLE, JR.

MULTIPLE DRILLING MACHINE.

APPLICATION HLED FEB 2, 1915.

Patented Aprr30, 1918.

4 SHEETS-SHEET 2..

q Q I AUJQIWOI G. T. TRUNDLE, 1R. MULTIPLE DRILLING MACHINE.

APPLICATION FILED FEB. 2.1916.

4 SHEETS-SHEET 3.

TRUNDLE, JR; MULTIPLE DRILL'E NG MACHINE.

APPLICATION FILED FEB- 2.19m.

Patentd Apr. 30

4 SHEETS-SHEET 4.

Ill

' ence being had to the accompanying draw- GEORGE T. TRUNDLE, .13., 0F CLEVELAND, OHIO, ASSIGNOR TO THE AMERICAN MULTI- GRAPH COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MULTIPLE-DRILLING MACHINE.

Specification of LettersPatent. Patented Apt. 39, I91- Application filed February 2, 1818, Serial No. 75,639.

'Jr., a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio. have, invented a certain new and useful Improvement in Multiple- Drilling Machines.'of which the following is a full, clear, and exact description, referings.

Thisv invention relates to a machine for drilling into suitable stock from different directions. The object of the invention is to provide a machine of. this class which while being simple in construction shall be accurate and rapid in operation, receiving the blanks, drilling them, and discharging them, in quick succession. The invention is hereinafter more fully described in connection with the embodiment shown in the drawings. which is designed to drill inwardly from opposite sides, and downwardly from above, into a blank, which in this particular instance is shown as a small drum-shaped block. My invention provides means for..;quickly placing and clamping such block or blank; for drilling into it simultaneously from different directions with a desired'number of drills, so placed that they do not interfere with each other, and for, discharging the drilled blank.

In the drawings Figure l is an end elevation of a multiple drilling machine embodying this invention; Fig. 2 is a rear elevation ofsuch machine, partly sectioned; Fig. 3 is a plan with the vertical drills and their supporting mechanism removed and with the feed magazine also removed; Fig. 4 is an enlarged horizontal section on the line 4-4 of Fig. 1, illustrating the gearing for driving the individual vertical drills from a common spindle, and intended to be illustrative of any number of individual spindles, driven by a master spindle; :Fig. 5 is a vertical section illustrating the same feature; Fig. 6 is a detail of the feed magazine as indicated by line 6-6 of Fig. 1; Fig. 7

is a plan of the feeding mechanism, being an enlargement of the same parts shown in Fig. 3; Fig. 8 is a similar view with the top plate broken away; Fig. 9 is a vertical section through the feeding mechanism, transversely of the machine; Fig. 10 is a fragmentary side elevation of the feeding mechanism, looking from the right hand end of the machine; Fig. 11 is a cross section of the feeding mechanism as indicated by the llne 11-11 of Fig. 7; Fig. 12 is a detail in plan of the feeding slide; Fig. 13 is a perspective view of a drum-like block after being drilled by particular machine shown in the drawing hereof.

The frame of my machine, as shown, conslsts of a suitable bed 10; a pair of castings or housings 11 and 12 secured to the top surface thereof, and a standard 13 rising from the rear portion of the bed and overhanging the central portion thereof at a considerable distance above it. Each of the housings is formed with two alined bearings 15 and 16 1n which are journaled suitable horizontal spindles designated 21 and 22, respectively.

"The horizontal spindles ,carry suitable ( lI'lll points 23 and 24," and are rotatable by suitable means, as for example, pulleys 25. The axes of the two spindles are preferably out of alinement, so that the drills may be moved inward past each other to drill through an interposed blank. The

drawing shows the spindle 21 as located higher but in the same vertical plane as the spindle 22: while the'drill 23 is shown as considerably smaller than the drill 24, though these details may be varied as desired.

The driving pulleys 25 are shown as secured to sleeves 27 which project therefrom toward the center of the machine and have hearings in the outer standards 16 of the respective housings. These sleeves are connected by a spline and groove with the spindles, which are shiftable within the sleeves. Accordingly, the spindles may be moved toward or from each other while they are rotating. to drill the interposed stock. The

mechanism for so moving them will be'hereinafter more fully described.

' On the forward face of the standard 13 is a boss 14 carrying avertical bearingBO. In this hearing is a sleeve 31 which has a splined connection 33 with the hearing, so that the sleeve may shift longitudinally'but may notv rotate. sleeve is an enlarged head 32. Rotatably jou'rnaled within the sleeve and head is a shaft 35.

On the lower portion of the shaft 35 and At the lower end of this I occupying a recess 34: in the head. 32, is a I Y mounted on a short transverse shaft 52, jourgearv 36. This gear meshes with pinions on suitable arbors carried by the sleeve 30. Two of these arbors are shown in the drawing, designated 40 and 41, carrying vertical drills 42 and 43, though it is to be understood that any desired number may be employed. As will be seen from Fig. 5, each arbor has bearings both above and below its pinion 37', the upper bearing being in the head 32 and the lower bearing in a plate 38 secured to the underface of that head. By providing these two bearings for the arbor on opposite sides of its pinion, its accuracy is insured. To take the thrust at the upper ends of the arbors, I mount suitable screws 47 in the head 32, bearing axially against the arbors. Each arbor has a suitable chuck at its lower end, the arrangement shown consisting of a sleeve 48 screwing onto the arbor and having an overhanging, conical bore adapted to clamp against the conical end 49 of a split portion of the arbor.

The shaft 35 rotates freely within, the

sleeve 31 but is compelled to move up and down with it. The shaft is driven by a suitable pulley 45, which is mounted on a sleeve 46 journaled in a bearing 17 at the top of the standard 13, this slee e having a splinecl connection with the shaft.

It will be seen from the description so far given. that the two horizontal drills 23 and 24 and the vertical drills 42 and 43 may all be rotated simultaneously by means of the pulleys 25, 25 and 45; also that all these drills may be caused to approach each other or recede therefrom by means of moving their respective spindles 21, 22 and 35 longitudinally. Mechanism is provided to shift all of these spindles at the same time automatically under the control of a single operating lever, and this mechanism will now be described.

Formed on the rear face of the sleeve 31 is a rack 50, with which meshes apinion 51 naled in the boss 14 projecting from the frame standard 13. On the external portion of the shaft 52'is a handle 54, by which the pinion may be rotated tov raise or lower the sleeve, and with it the s indle and the several vertical drills. An a justable collar 39 on the sleeve may limit the downward movement thereof, as desired.

Each of the horizontal spindles 22 and 23 is provided with a grooved collar 60, located between the bearing standards 15 and 16. Into the groove of each collar extends a pair of rollers 61 on a pair of upwardly extending arms 62. The arms of each pair unite at their lower ends and are connected with a horizontal arm 63, the structure thus constituting a bell crank, pivoted on the cross rod 65 extending crosswise of the bed and supported by it. The approximately I guided by the top plate ofthe bed and at its upper end by the frame boss 14. Intermediately the rod extends through an. car 74 on the sleeve member 31, and is locked to the ear, as, for example, by the collars 75 pinned to the rod above and below the car.

Whenever the sleeve 31 is operated by moving the lever 54 the rod 73 is correspondingly ralsed or lowered, and this rocks the bell crank and moves the horizontal drills. Thus, a downward movement of the sleeve and vertical drills results in an inward movement of the horizontal drills, and vice versa. I

It will be noted that the arrangement above described, of simultaneously operated horizontal and vertical drills, provides for drilling into a block from opposite sides, and downwardly into its upper face. Such drills may thus produce the holes indicated at a, a a and a, in the article A shown in Fig. 13. In producing these holes the drumlike article stands on one of its flat faces,the two vertical drills 42 and 43 drill into it froirr above, producing the holes a and a At the same time the drill 23 enters from the right-hand side of the machine and roduces the hole (1 while the drill 24 entermg from the left-hand side, produces the hole a. The horizontal drills may move past each other sutliciently to drill clear through the block at the same time that the two vertical drills straddle these horizontal drills and drill downwardly from above.

In order to rapidly position the blank beneath the vertical drills and between the horizontal drills and'clamp it in place and remove it when drilled, I provide mechanism which will now be described.

Rising from the upper surface of the bed 10 at its intermediate position, and extending in a direction from front to back, are parallel frame ribs and 81, between which is an o'pening'82, through the bed. Secured in the groove between the ribs, and respectively in front of and behind the hole 82, are liners 84 and 85. Resting on these liners is the slide (shown detached in Fig. 12), for supporting and positioning the blank A.

The blank is placed on the slide 90 at the rear of a shoulder 91 thereon. Over the slide is a plate 94 secured to the frame ribs by screws 95. Through the plate 94 in front of the drillingposition is an opening 96 or such size that the blank may ass through it. Pivoted to the under side of the plate 94 (by vertical pins 97 passing into that plate), are a pair of dogs 98, shaped like hell cranks and having their proximate ends pressed to- I against their distant ends. The plate 94 is narrowed at the rear of these dogs and at that position carries beneath it the abutment block 100. On opposite sides of this block are bars or ribs 102 and 103, which have horizontal holes through them, designated 104 and 105 respectively, for guiding the horizontal drills 24 and 23. The rib 103 is shown as secured to the under side of the plate 94, while the rib 102 is shown as consisting of the upward flange of an angle piece secured to the frame rib 81-see Figs;

10 and 11.

The drum-like blank A is placed in the opening 96 and thus rests on top of the slide 90. Then this slide is drawn forwardly until the shoulder 91 substantially alines with the forward face of the hole 96, whereupon the blank drops onto the plate 90 at the rear of the shoulder and in front of the free ends of the. dogs. Then if the slide 90 be shoved rearwardly (toward the right in Figs. 7, 8 and 9), the blank is carried past the dogs and into engagement with the stationary abutment block 100. As heretofore stated this block is carried by the plate 94, but it may be accurately positioned by the screw 106, mounted in the standard 13 and locked by the nut 107, adjustment being allowedby a slot in the plate 94 occupied by a screw 108 which holds the block.

By the movement described, the blank becomes locked in the desired position directly beneath the vertical drills and between the horizontal drills. After these drills have acted on the blank the slide 90 is drawn forwardly. The dogs 98 prevent the blank moving with the slide, and accordingly, the slide travels out from under the blank so that the latter is free to drop into the hole 82 and be discharged. To insure against the sticking of the blank, ll provide at one side of the slide '90, a rearwardly extending bar 110, which carries a block 111 adapted to engage the lower portion of the blank when the slide is drawn'forward and thus tip it slightly, which is sufficient to'loosen it, allowing it to drop by gravity.

To cause longitudinal movement to the slide 90, 1 provide a stud 115 extending from the front end of the slide 90, on-which 1 journal a hub 116, from which extends a hand lever 117. The hub has an extension 118 which has a cam face adapted-to en- Mounted in the plate 94 are devices adapted'to press downwardly on the blank A and maintain it seated on the slide 90. In the construction shown each device consists of a ball 144, (Fig. 11), mounted in a cavity which has a restricted bottom opening, the ball being surmounted by a -compression spring, above which is a screw 145 closing the cavity. i

I may provide a suitable magazine to automatically discharge the blanks into the recess 96, or the operator may place them there by hand. I have shown such a magazine consisting of an upwardly extending trough 130 (Figs. 1, 6 and 9), having ears 131 by which it is held about the edge of a bar 132, which is secured to the plate 94 and rises from it. Within the trough is placed a pile of blanks each resting on the fiat face of the blank below it, the bottom blank being directly over the opening 96 into which it drops by gravity.

As shown, the blank to be drilled has through it a central, parallel-sided notch a, and to properly position this notch the bar 132 has a rib 135 which occupies these notches in the surmounting blanks. The slide 90 may also'have at its-forward end a tongue 129, to occupy this notch, the tongue being provided with transverse holes for the passage of the horizontal drills. Below the opening 82, through the bed, 1 may place a suitably inclined chute or tray 140, for receiving the finished articles.

In the operation of my machine the vaing 96. If this magazine is not employed,

these blanks are. placed by hand in this opening. In any case the operator draws forward on the handle 117 in its vertical position, bringing the slide 90 into position so that the blank drops behind the shoulder thereon, then he shoves rearward on the handle until the blank is substantially in position for action, then he turns the handle downwardly, causing the cams 115 and 120 to engage, thus forcing the blank snugly to its seat. The handle 54 is then operated moving the rotating vertical drills downwardly and the rotating horizontal drills inwardly. When the drilling operation is completed, the pinion 51 is rotated to withdraw the drills, and then the handle 117 is swung into its vertical position and pulled bodily forward. This draws the slide 90 out from under the blank, and block 111 knocks the blank loose (in case it is "not free), and the drilled article drops through the opening 82 onto the delivery slide 140.

said hell or thus my invention, claim is: ll 4'1 Adm q b la A .Le .JLL LG vUiiltJiLiaE/LGR G}. 1.4 6Q, e l/7C galls bJl. bearings carried thereby, two spindles 1 l *1 mounted the respe ve pairs, COllfiiS on spindles between the bearings,

pair or bell cranks pivotally carried by the bed and extending upwardly between the bearings said ccl s, the other arms 's cxten i o inwardly toward. each other, a a e device movable bodily in a vertical direction and engaging the two inner arms of said bell cranks.

2. lbs a drilling machine, the combination or two spindles at an angle to each other, means for concurrently rotating both spindles, said spindles being mounted so as to be shiftable longitudinally, a bell crank having one arm engaging a collar on one of the spindles, and a movable rod parallel with the other spindle and connected with the other arm of said bell crank.

3. The combination of two drills, longitudinally shii'table spindles carrying said drills, one of said spindles being provided with a rack, a rotatable pinion meshing with said rack formoving the same, a collar on the other spindle,'a bell crank having one arm engaging said collar, and a rod movable with the other spindle and connecting the other arm or said bell crank with said other spindle.

l. The combination of a pair of horizontal spindles, drill points carried thereby substantially facing each other, bearings in which the spindles are mounted and in which they may shift longitudinally, means for rotating the spindles notwithstanding their shifting, collars on the spindles between the bearings, a pair of hell cranks each having an arm engaging one of said collars, the other arms of the bell cranks extending toward each other, a third drill spindle located substantially at right angles to the spindles already mentioned, means for rotating said third spindle, means for feeding it toward a position between the other spindles, and a shiftable rod connected with said third spindle and with the proximate arms of said bell cranks.

5. The combination of a longitudinally shiftable sleeve having a head at its end, a spindle journaled in said sleeve and provided with a gear mounted in a recess in the head, a plate secured to said head beyond the gear, individual spindles parallel with the master spindle and journaled both in the head and in said plate, screws mounted in the head in alinement with the respective individual spindles to take the thrust thereof, and pinions intermediately located on said individual spindles meshing with said ear. 4

6. The combinationwith a plurality of drills, of means for rotating said drills and u to support a Ija imultancou iually while rofor show L ic mo: for

oositiou while the supper drawn from beheath rue ccmbin them, of :1. slide 11k in drilling posaid slide, menus for i shoulder loo;- rudia blank the slide to drilla shot, shoving ti" nally to carry ing position. .11 abutment limiting this movement of the blank, means for holdingthe blank in "his position while the slide is withdrawn, and, a wed or cam adapted to cause the slide to t itly clamp the blank a ainst the abutment.

8. The combination. with drills. of a slide adapted to support a blank to be drilled. a shoulder on said slide whereby the movement of the slide may shove the blank into place while it is supported by the slide. and a pivoted dog adapted to engage the article in this position and prevent its withdrawal when the slide is witlu'lrawn.

9. The combination of a slide adapted to support a blank, a shoulder on. said slide.

whereby the movement of the slide may shove the blank into place while it sup ported, and a pair of dogs pivoted in stationary pivots and adapted to engage the orticle in this position on opposite sidcs of said shoulder, whereby the slide mav be withdrawn from beneath the blank.

l().-. The combination. with drills and means for o )erating them, of a slide adapted to support a blank, means for guiding the blank onto the slide, means for moving the slide and at the same time shoving against the side of the blank, an abutment which the opposite side of the blank engages. means for locking the parts in this position.

11. The combination with drills and means for rotating and feeding them. of a slide adapted to support a blank in drilling position, a shoulder on said slide, means for shoving the slide and shoulder longitudinally to carry the blank to drilling position, and a handle connected with the slide for moving it in and out, said handle being rotatable and. provided with an extension adapted to have a wedging action against an abutment.

l2. lhe combination with drills and means for rotating and feeding them, of a slide adapted to support a blank in drilling position, a shoulder on said slide. means for guiding the blank downward onto the slide in front of thcslwulder. means for shoring the slide and shoulder lmigitudiuully to carry the blank to drilling position. means for holding the blank in this position while llfx the slide is withdrawn, and a handle connected with the slide for moving it in and out, said handle being rotatable and provided with an extension adapted to have a wedging action against an abutment.

13. The combination with drills and means for operating them, of a slide adapted to support a blank, -means for guiding the blank onto the slide, means for moving the slide and at the same time shoving against the side of the blank, an abutment which the opposite sides of the blank engages, means for locking the parts in this position, means for moving the slide in the opposite direction, and means for engaging and holding the blank to prevent its retractive movement with the slide.

14. The combination with drills and means for operating them, of a slide adapted to support a blank, means for movingthe slide and at the same time shoving against the side of the blank, means for moving the slide in the opposite direction, means for engaging and holding the blank to prevent its retractive movement with the slide, and means adapted to impinge the blank after the supporting slide has cleared it, whereby the blank may be knocked loose and drop by gravity.

15. The combination with drills and means for operating them, of a guiding opening for blanks to be drilled, a chute above said guide comprising a bar with a trough secured to the edge thereof, said chute discharging into such guiding opening, a slidable device beneaththe guiding opening consisting of a supporting slide having a shoulder which may abut the blank, means for moving the slide longitudinally to carry the blank to active position, and means for holding the blank in this position, and for withdrawing the support from beneath it when so hel 16. In a machine for drilling slotted drum-like blanks, the combination of a support for the bottom of the drum-like blank, an abutment for one side thereof, a movable shoulder for the opposite side having a tongue adapted to enter the slot in the blank, and a magazine for carrying such blanks one above the other comprising a bar having a rib along its edge and a retaining wall outside of the rib.

17. In a machine fordrilling drum-like blanks, the combination of a support for the bottom of such blank, a stationary abutment for one of the curved sides, a movable abutment for the other curved side, means for moving the movable abutment and locking it to clamp the blank between the two abutments, means for pressing on the other flat side of the blank to hold it on the supporting slide, and drills adapted to engage one of the flat surfaces and the curved surfaces of the blank, and means for simultaneously forcing said drills into the blank.

18. In a machine of the character described, the combination of a frame carrying a pair of separated ribs, a top plate projecting across the ribs and having a hole through it, a slide in the space between the ribs and below the top plate, said slide having a portion of reduced height adapted to be brought beneath said hole, there being a downward opening through the bottom of the groove occupied by the slide, means for operating the slide to carry a blank dropped through said hole onto the slide to a position beneath the top plate, and over the discharge opening, and means for preventing retraction of said blank when the slide is withdrawn.

19. The combination of a frame having a pair of separated parallel ribs, a top plate extending across said ribs and having a hole through it, a slide in the space between the ribs and beneath the top plate, said slide carrying a ledge adapted to be brought beneath said hole or beneath the top plate adjacent to the hole, a guide through the top plate in the latter position for a drill, and a side guide for the drill.

:20. The combination with a pair of frame ribs spaced apart, of a top plate secured thereto and having an opening through it, a slide in the space between the ribs and beneath the top plate, said slide having a ledge adapted to carry a blank dropped through said opening, an abutment into which the blank may be brought by movement of the slide, the blank being at such time beneath the top plate, and a pair of ribs on opposite sides of the blank, said ribs having through them openings leading into the blank and adapted to guide drills thereinto from opposite sides.

21. The combination of drills side by side, means for individually rotating them, means for advancing them as a unit, a pair of drills at right angles to the drills mentioned and substantially facing each other but out of alinement, means for advancing said latter drills toward each other allowin one to move past the other, means for positioning a blank where it may be simultaneously acted on by all of said drills, and

means for simultaneously advancing said.

drills into said blank, the two drills which are opposite each other passing between the drills which are side'by side, said opposite drills moving past each other.

In testimony whereof, I hereunto afix my signature.

GEORGE T. TR'UNDLE, JR.

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