US1034436A - Machine for drilling bolts and other work. - Google Patents

Description

Ex-v. HSHBURNE. l l 'MACHINE ORBRILLNG BOLTS AND OTHER WORK 1,034,436.-

APPLIQTION YTLED NOV. 4, 1911.

Eatented Aug'. 6

1912. Smm: 1,

4 SHEETS* @E @a @WQ @N w @MQ ,uw a

Y E. WFHEURNR l MACHINE FOR DEILLING BUMS AND G'IIEUE'EWRK..`

1912. 4 snmsfsmm 2.

APPLICATION FILED M51( 1.911.

Patetea Aug. 6,

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B. W. FSHBURNB. MACHINE FOR DRILLING- BOLTS AND OTFERv WORK'.

APPLNATION FILED NOVA, 1911. y Y

' Patented Aug. 6, 1912.

Patented Aug'. 6, 1912..

4 SHEETS-SHEET 4,

To all whom 'it may concern:

`the like l not `verri;ion also aims to i class oit-devices and to render Vt em more Lilf smarts More. vise-INIA, A CORPORATION.

Be it known that I, EDWARD VINBURN FIsneUnNn, a citizen of the United States, residing at Richmond, in thecounty of Henricoand State of Virginia, have invented certain new and useful Improvements in Machines for Drilling Bolts and, other lVork, of which the following ing drawings.

This invention.comprehends certain new and useful improvements in drillingfmachines for use in drilling stay-holts for locomotive fire boxes and for drilling other analogous devices, and relates particularly to machines of the automatic type which are designed to drill the bores Aof the stay-bolts, for instance, while they are carried around in a re'voluhle work holder and to discharge the stay-bolts after their bores have been finished, the present invent-ion improvement on the machine Letters Patent of the United 1,621,242 were March 26, 1912;

The invention has for .its primary object an improved automatic drilling machine of this charactenvthe parts of which are so arranged that the drills will be automatically withdrawn one or more times during the drilling operation,'whereb`y to clear the bores. of the shavings or borings, 'and subsequently by automatic means. moved forward to their operative position until the bores vfor which y States No. issued on my application have -been entirely completed, whereupon 'the drills will be entirely withdrawn until a succeeding operation is commenced.

The invention also has for its object a simple, .durable and efficient construction of means for securely holding the staybolts or 'only as against any movement abouti-heir longitudinal axes, but also .as against endwise displacement. And the i`ngenerally im ro've this usenl'and commercially desirable. y Fiith these and other objects in view, will-"more 'nlly appear as the description proceeds,",jthe invention consists in certain constructions, arrangements and combinations of. the parts that I shall. hereinafter :lnlly describe and claim. 1 1

For a full,y understanding of the invention,

Specification or Letters Patent.V Application filed.v November 4, 1911.

` reference is to he had is a specifica. tion, reference being had to the accompanybeing an Patented Aug. 6, i912. serai No. 658,542.

to the following description and accompanying drawings in which7 Figurel is a top plan view of a drilling machine embodying the improvements of Fig. 3 is a longitudinal sectional 'View of the machine. Fig. 4 is a detail sectional 'view on.' a plane indicated by the li11e'cz-a, of Fig. 3. Fig. 5 isa detail view of one of the drill shafts andits component parts partially in sect-ion ahd partially in side elevation. Fig. 6 is a detail perspective view of the cam member hereinafter specifically de- 2 is an elevation thereof.

scribed. Fig. 7 is a. detail transverse sectional view on the line -b, of Fig. 4. Fig. 8 is a detail view of one of the bolt clainping devices, and, Fig. 9 is a detail view of one kof the relatively stationary Ablocks de- Signed to co-act with the bolt clamping devices to hold the bolts securely in position while being worked upon. A Referring tothe drawings, the numeral 1 designates the frame-work of my improved drilling machine which is provided atV its ends with standards 2 and which is, in the present instance, mounted upon feet A supporting sha-ft 4l lis mounted in openings ormed for it in the upper ends of the standards 2 and is secured in said' openings in any desired way, as by set screw 5.

Mounted upon the shaft a at'ahout the middlegthereof, is a revoluhle drill carrier which embodies a sleeve l2, and longitudinally'spaced heads being formed on its gear teeth 14 adapted to mesh with a worm 4 8 on a shaft 46 which is journaled in uprights or standards L5seen-red to or formed 3 and 15,the head 13 periphery with worm on the base of the frame-work l. The shaft 46, also carries a bevel pinion 47 which meshes with a corresponding but smaller ,pinion 43 secured on one end of a longituf dinally disposed shaft 41 journaled on a standard or post 40. The shaft 41 also carries a pulley -l-2, around which a band 44 passes, said band also passing yaround a piilley l0 which is formed on va sleeve 6 mounted to turn on the supporting shaft t.

and formed with ,a reduced Ahuh extremity 7 journaled Iin the bearing S which is formed 1n onel of the standards 2, as clearly illnstrated in Fig. 3.

The sleeve 6 is also formed y Y with a band wheel 9 by which power is ap-A l Afrom one face of the head 13 at the rim or edge thereof, said pinions 39 having a, groove and feat-her connection 33 with drill shafts 17, whereby the shafts willbe permitted to move longitudinally, but will be compelled to turn as the pinions are rotated by the gear wheel 11. Any desired number of shafts 17 and component parts may be employed. Each shaft is provided intermediate of its ends with a collar 18, asbest illustrated in Fig. .5, adapted to abut against one end of sleeve 26 mounted upon the shaft and held thereon by nuts 29 and 30 and,y an intervening washer 31 of fiber or the like. Each shaft 17 is formed at one end with a threaded socket adapted to hold a threaded drill supporting stem 20, the latter in turn being formed with a tapcring socket 22 to receive the tapered head Q3 ot' a drill 24. r1`he inner end of the socket 22 terminates in a transverse opening 19, whereby a suitable tool may be inserted therein to drift the drill out of its socket when it is desired to remove the drill. The sleeves 26 are mounted in and movable longitudinally through openings that are formed in the head 15 of the drill carrier and are provided at one end with laterally projecting pins 33, on'which rollers 3l are journaled. rollers are adapted to be engaged, in turn, as the drill carrier rotates about the shaft 4 as an axis, by a cam member S7 which is supported by a forked bracket S9 supported on the base of the frame-Work 1. YIn the present embodiment of the invention, the cam member 87 is formed with angular cam sections 97, 9S and 99 adapted to co-act with the adjoining face of the cani meniber, vwhereby as rthe rollers 341 are carried around between one face of the earn member S7 and the co-aetingv angular cam seetions 97, 98 and 99, the drills, after having been once fed into the work for the initial portion of the operation, will be `ilrst positively withdrawn by engagement with the angular cam section 9T, will then be ted back into the work a greater distance than before, will then be again positively withdrawn to remove the boi-ings or shavings as before, and will then be finally fed to ward again by the cam face itself to complete the bore, afterwhich'the angular cam section A99 will come into play and positively and entirely withdraw the drill from the bore, while at the same time, the bolt clamping devices of the work holder will release tbc-bolt and permit the finished bolt to These held and preferably the head 50 is formed y in sections designated 51 and 52, the sec-n tion being formed with openings having guiding bushings 60 secured therein for the purpose of accurately guiding the drills 521i to the work. Preferably, these bushings 6() are held detachably in place, whereby diferent sized bushings maybe used, according to the diameter of the drilling tool employed. ln order to adjust the'work holder in size, for bolts of different lengths, the tie bolts 53 which connect one head to the other, are relatively long and have ad- The bolt clamping devices include clamping members 68 which are pivotally connected, as at 68, to one face of the head section 51, each of said clamping members embodying three arms, one of which carries a' roller 69 adapted to bear against and ride upon cam 57 which is carried by a bushl justable connection with one of the heads.

ing 56 litting in the 'flangedv end 16 of they,

sleeve 12 and encircling the supporting shaft li Springs' 79 are providedl to hold the rollers 69 seci'irelylfagainst the edge of the cam 57, said cam being provided at one point with a recessed portion, whereby when the rollers reach such portion, the clamping members will be rocked in a di rect-ion to release their hold lon the bolts and permit them to drop. Thev clamping member 68 has connected to one 'of its arms at 70, a yieldable rocker bar 73 yifhich is adjustably eonnected'to the roller carrying the arm of the member by an adjusting lscrew 7l to limit the movement in one di rection and which is spring pressed to yield in the opposite direction by means of a spring 75, the tensionot which may be ad-s justed by a screw 7 6 carried by the other arm ol the clamping member. Thus the clamping member will be permitted to yield should occasion require as, for instance, were a bolt4 or other object of larger diameter than that for which the machine had been adjusted, to be fed to tli.e.machine. Each rocker bar 73- is serrated on one edge to form a jaw 72 designed to co-act with a relatively stationaryV jaw 8l which is formed by the serrated edge oia block 8,0 secured to the head 50. The serrations or 'these two jaws extend longitudinally oi the'bolt and transversely as regards the threads thereof, whereby the belt will vbe prevented from turning about its longitudinal axis as it is bein ln order to preventA endwise dispcement bored. f

of theboltf provide other jaws which are 131 termed by bleek@ e2 and Se secured t0 the 170612915 bars 73a and the .blocks 80,.I'SPC tively, byscrews or similar fastening devices. These last named jaws are formedL with grooves or corrugations that extend coincident' with and pretereblv about the same pitch as the threads of the bo1t,

whereby they will securely engage with su/e'h 'threads Without iujuringthe sameVand coacting with the rst named jaws, prevent the bolt from moving.

Preferably, the section 51 is connected to the section Vo?, by mea-ns of set screws 58, the section 51 being formed with curvedl slots 59 concentric with the shaft 4, three; jh which slots the set screws extend., 'e heads of these set screws, by bearingagainst the bottoms of the ses. een@ ae Seesen 51 a be rigidly secured te the section 52 in any desired angular adjustment.

Frein the foregoing description in connection with the accompanying drawings, the operation of my improved drilling ma- Chiu@ will be apparent; ln the practical use of the devicdas the drill carrier is krotated slowly bythe engagement ofthe worm 4S with the toothed head 13, the Worky earrier will also be rotated and the drill shafts 17 will be rapidly rotated about their own axes by the engagement of the pinions, a9, l

with the gear wheel 11. During'. the combined rotary and revoluble movements of the drill shafts 17, they will be moped forwardly und backwardly by the co-acting angulaieamsections 97, 98 and 9,9, adjoining cam surfaces of the are of the cam member 87, whereby the tools) will first partially form' the bore and then, be retracted therefrom a `n umber of times so as to clear the bore the shatijnew and'borings, the tools heir-@drilled pleted, at which tlm other receptacle.

withdrawing opw rave been. fully 'com the cam section 99 will act t0 entirely Withdraw the tool from the. bOI'Q, White at the'salne time, the correspond-ing clamping member 68 will reinto the bolts, after each eration until the be,

'loose its hold on the bolt and permit the completed article to drop into 'the tray or` What I claim 1. A drilling machine of the character described, including a revoluble drill ear= rier, a drill supporting shaft movable long-ie I tudinally therein, means fori rot-ating the,

drill carrier, means; to rotate the shaft in the drill carrier, and automatic means for first growing the drill shaft forwardly, then wliiclribwas first moved forward and nally .entirely retracting the drill from the Work.

described, including ret-clubic drill carrier, a pluralityv of'drill shafts mounted to rotate in, seid" drill carrier and movable longllkldllnaiiy therein, means for rotating tlie`-drill carrier, and means for automati- @ally moving each drill shaft forwardly and rearwardly alternately aV plural number 0f times during the revoluble movement of the drill carrier, said means oomprising rollers movable longitudinally With the shafts, and a cam member formed with a cam face and coacting cam sections spaced therefrom on opposite sides of the said rollers.

bolt receiving` notches, clamping members adapted, to engage bolts received in said gitehes and formed with means' for preventing the bolts from turning axially and from moving longitudinalty, and blocks our'. ried by one of the, heads and formed with COI'IGSPQDQMQ means adapted to co-act with i @he E@ 0;@ "the clamping members.

.1li a Aiilng maehinecf the ,character l desrlbhd, a Work carrier, including a head l @Need with bolt receiving notches, clamp- Tersely' extendingserrations adapted to en- EDWARD W. risHiuRNE.

Witnesses:

J. R. MoBoYDn,l

C. G. HeMMAoK.

. retreating 1t, subsequently moving -it foirvv ard again a dlstance greater than that into path of movement. of

2- A drilling mae-lame of the character 3. In a drilling machine of the character described, a revoluble Work holder, embodying longitudinally spared heads, a supportj 30,' therefor, the heads being formed with f ling arms mounted on said head at oneside of: Said and formed withHirans-i 9.5 l age the bolts, blocks secured to said mem 4'

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