US974056A

US974056A - Metal-working machine.

Info

Publication number: US974056A
Application number: US41755808A
Authority: US
Inventors: Bengt M W Hanson
Original assignee: Pratt and Whitney Co Inc
Current assignee: Pratt and Whitney Co Inc
Priority date: 1908-02-24
Filing date: 1908-02-24
Publication date: 1910-10-25
Anticipated expiration: 1927-10-25

Description

B. M. w. HANSQN.`

METAL WORKING MACHINE.

APPLICATION FILED TBB. Z4. 1908.

`Patented 001.25, 1910.

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Witnesses; Inventar: MWYIanSon yk.5Aorney,

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B. M. w. HANsoN.- METAL WORKING MACHINE. APPLICATION FILED FEB. 24, 1908.

Patented 0ct.25,19 1o.

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B. M. W. HANSON. METAL WORK-ING MACHINE.

APPLICATION FILED rIzB.24,19oa. v

Patented 0Ct.25,1910.

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l13'. M. W. HANsoN.. METAL WORKING MACHINE.

APPLICATION FILED PEB. 24.1908.

974,056. v Patented 001;.25, 1910.

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Fly- 6". 175g. .9. ,050,

UNITED sTATEs 1PATENT OFFICE.

BENGT M. HANSON, F HARTFORD, CONNECTICUT, ASSIGN-OR TO PRATT & WHITNEY' and 7 respectively for the reception of I engage the edge of a rib 3T projecting from COMPANY, OF HARTFORD. CONNECTICUT. A CORPORATION OF NEVI JERSEY.

METAL-WORKING MACHINE.

974,056 Specification of Letters Patent. Patented Oct, 25, 1910,

Application tiled February 24, 1908. Serial No. 417,558. l r i To all whom 'it may concern:

tubular spindles

8 and 9. Disposed between y Be it known thatl, Biciso'r M. lV. HAN- said elevated portions is `a carriage 10 SON, a subject of the King of Sweden. remounted on ways 11 extending transversely siding at. Hartford, in the county of Hartof the machine.

ford and. State of Connecticut, have in- 'ithin the bearing 4 is fitted a bushing 60 vented certain new and useful Improvel2 through which extends a. sleeve 13 havinents in Metal-lVorking Machines, of which ing' a head 14 at one end and provided with the following is a specification. a nut- 15 and a washer 16 at the other end.

This invention relates to milling' machines A key 13 secured withintlie head of sleeve lo es cially adapted for forming slots or 13 engages a spline 17 in spindle 8 while 65 splliiencs and has for its object'.- the provision surrounding said head and keyed thereto is of a machine having two oppositely disa gear 418 in mesh with a. larger gear 19 rigid posed spindles carrying tools which may he with a shaft. 2O .which will hereinafter be caused to operate simultaneously on oppoii'ioi-e.fiilly described.- 15 site .sides of stock which issecured to a car- It is obvious from the foregoing descrip- 70 riage snitally mounted for reci procation be.- tion that spin dle 8 may be fed longitudinally tween said spindles. while receiving rotation from shaft 20 A further object of the invention is'the through gears 18 and 19.*, A similar arprovision of means for readily positioning rangement of gears (but one of which is v 0 cei'tain elements of thc machine so that the shown) exists between shaft 20 and spindle 75 work to be done thereon may be accurately` t) except that an idler is interposed between and completely accomplished without t'urthe gears corresponding to

gears

18 and 19 ther attention of the operator. so that spindle 9 will he rotated in a directher objects of the invent-ion will be tion opposite to that of spindle 8. 25, hereinafter Set fori-h. Fitted within bearings 5i and 7, surround- 80 In the accompanying drawings, Figui-e 1 ing,r spindles Q and 9, and hearing against is a"plan view of a

milling machine concollars

8 and 9 respectively are sleeves 21 strncted in accordance with my invention. and 22 having rack teeth on their under Fig. 2 is a plan view of the power transsides in engagement i'esliectively with pinmission mechanism. Fie'. 3 isa detail view ions Q3 and 24. AEach of these pinions is 35 of a partofthe spindle feed mechanism foi-ined integral with a shaft which is looking in the direction of the arrow in mounted lraiis\-'ersel to

spindles

8 and 9 Fig. 2. Fig. 4 is a longitudinal sectional and prevented from longitudinal displaceview on a vertical plane passing'through the ment by a screw ioi'nt e1iterin, r a groove spindles, parts being shown in elevation. therein and -each iaft' is provided with a 90 Fig. 5 is a transverse sectional view on line pulley` cord and w'cight. all as shown in .5--5 of Fig. Fig. G is'a detail plan view `ig. Said weights which tend to rotate of a portion of the carriage actuating niechthe pinions 23 and t in a direction that anism. Fig. 7 is a sectional view on line will withdraw the spindles S and il from l0 7-7 of Fig. (i. l4`igs. 8. t). 10 and 1l are their work are designated respectivcliv hy 95 detail views of a 'visesuitable for holding 25 and QG. i squarestock in position upon the. carriage. lnthe bore of spindle S is a rod L7v having Figsjl), and 13 are detail views of a vise a holld'w end Q9 into which is threaded a suitable foizholding round stock iu position collet 30 provided with a beveled head 31 "3 upon the carriage. Fig. l-t is a detail view conforming to a taper in the bore at the 1.00 hereinafter described, and. Fig. l5 is a deend ot said spindle. At' 32 rod 2T is slightl)v tail View in section of a clutch hereinafter enlarged thereliy forming a shoulder which more particularly described. hears against the outer end of spindle and Like n'u'inerals designate similar parts at ltsaid rod is provided willi a hexagonal tlirolighont.'thil several views. part for the reception of a wrench. B v 105 Referring tn 'thc drawings thtl numeral l 'turning this rod the collet 30 may be made designates the l'ramc of the machine` nu` l-to grasp or release a tool shanl; as desired. incl-

als

2 and 9 elevated hollow portions llisertid in a linre 3A of rod '27 is a shaft 35 n thereofprovided with hearings 4 and 5i. and rigid with a head 36 which is slotted to no ld the side of a gear 38 said rib being concen- I tric with the liub of gear 38, which is secured between adjusting nuts 39 and 40 g upon a threaded portion of a shaftl41 the ends of which are journaled iii bushings -12 i land 43 carried res actively in

bearings

44 and 45 of the mac ine frame. 'llie rib 37 has a cam face 46 Vwhich bears against a vhardened in 36 inserted transversely through the slotted head 36. From its lowest point this cam face has a gradual rise extending about 9/10 of the way around the rib after which it has a comparatively sudden return to its lowest point. This conformation causes the spindle affected thereb to be advanced at a desired uniform eed its quick return at 46 being ac complished by means of the weight driven pinion in connection therewith. 'lo receive the thrust of shaft 35 a hardened pin 35 is placed in bore 34.

At theopposite end of the machine frame from gear 38 is a similar gear 47 mounted upon the threaded portion of a shaft 48 between adjusting nuts 49 and 50, the ends of said shaft being journaled in bushings 51 and 52 carried in

bearings

53 and 54 respectively. rib 55 pro ectin from gear 47 and concentric with t e hu thereof is provided with a cam face 56 which performs the same function for spindle 9 that cani face 46 does for spindle8 therefore it is not necessai1 to describe at length the intervening etails of construction as their counterpart has alread been described in con- 'nection with s indie 8. 'if

' In mesh wit gears 38 and 47 are piiiins 57 and 58 rpectively which are rigid with -a shaft 59 extending throughout the length of the machine frame and mounted in bearings 60 and 61 thereof. To the end of shaft 5:1 which extends through bearing 61 is ke eda hand wheel 28.

- fteferring to Fig. 2 the numeral 62 designates a power shaft provided at its outer end 'with a step 'pulley 63 and at its inner end with a ear 64 which meshes with a. gear 65 rigid wit shaft 20 which is journaled at its ends in bushings 43 and 52 'before inentioned.

Designated byeGG is one of the gears which are interposed tween shaft 20 and spindle 9 and by 67 a small gear keyed upon shaft 20 intermediate gears 19 and 66.

Mounted transversely of the machine below the horizontal planes of shafts 2O and 59 is a shaft 68 extending through its outer bearing 69 where it has keyed thereon a cam 70. At ,the inner extremity of this shaft is a clutch member 68 which by any desirable t means (not shown ma be caused to clutch or release a gear 1 a 'acently and loosely mounted upon said shaft. A train of gearinlgeglomprising s ur

ears

72 and ,73, worm'- w 74,"worm 5, c ange gears 76 and 77 and Spui' gear 7 8 is interposed between gears 71 and (i7. Keyed to-the outer end ofv shaft 68 is a gear 79 meshing with a pinion which is formed integral with the hub 81 of a hand-wheel 82, said hand-Wheel be- 70 ing supported on a stud 83 secured in a bracket 84 which also serves as a support for a guard 85 surrounding gears 79 an 80 lVheii gear 71 is released by clutch member 68 it -is obvious from the above description 75 that shaft 68 may be rotated manually by means of hand-wheel 82 and that when said gear is made rigid with. the clutch member 68 the shaft will be driven by power transmitted from shaft 62 through gears 64 and v80 65, shaft 20, gear 67 and so on through the gearing interposed between `said last mentioned gear and said shaft. v

In engagement with the cam groove 87 of cam 70 is a rollei stud 88 depending from 85 one end of an arm 89 which is pivoted near its center on a vertical stud-shaft 90 secured in the bracket 84. Slidably mounted in a T-slot 91 formed in the upper side of arm 89 is a standard 92 through a perfora- 90.

tion 93 in the base of which projects the stein 95 of a T-bolt 96 which is threaded to re" ceive a clamping iiut 97 having a handle 98.

An adjusting screw 99 rovided with a manipulating knob 100 is supported by a 95 plate 101 secured to the free end of arm 89, said screw being threaded through the head of T-bolt 96. Fitted in a vertical bore 102 of an overliangiiig arm 103 of the standard 92 is the stem 104 of a swivel block 105, 1'00 said stem being grooved at 106 to receive the point of a screw 107 which prevents it from vertical displacement. Passing through a bore 108 in the swivel block 105 and provided with

knurled adjusting nuts

109 and 105 110 on either side thereof, is the reduced threaded end 111 of an arm 112 the other end of which is pivotally secured by a nut 113 on a stud 114 projecting from the under side of the carriage 10. As the roller stud 88 110' follows the conformation of cam-groove 87 an oscillation of-arm 89 about the stud shaft 90 is produced lwhich results in a reciprocatory motion being transmitted to the carriage 10 through arm 112. B adjusting 115 standard 92 along arm 89 there y varying the magnitude of the arc through which it travels the scope of the reciprocatory motion of the carriage may be varied and by adjusting the

knurled nuts

109 and 110 the 120 effective length of arin 112 may be varied thus changing the rela-tive position of the carriage upon ways 11. Graduatios .at make it possible to accurately adjust stand-.- ard 92 so as to produce the length' lof car- 125 ria e traveldesired.

n the outer edge of cami'O are t". o ro-

I jections

116 and 117 in the path o4 v w 'ich is a roller.118 secured to the free end, of an arm 119 which is rigid with a rock-shaft '130' 120 mounted in bracket 121. ltrgid with at one end ofi the vise isa piu 157 haviuga.

the other end of said rock-shaft is an arm 122 connected by a link 1225 to one arm 12t of a` bell-crank lever 125 which is loosely mounted -on shaft 56 between a collar 126 and a ratchet disk 127 which are rigid willi said shaft, the ra'tcln-.t-disk being adapted to be engaged by a 'atchet-pawl 12S lnouuted on the other arm 1211 of said bell-crank lever 125. As the cam 7() rotates. rock-shaft 120 and the armsl rigid therewith are caused to osei'llatc, said oscillation beingl transmitted throu'rh link 123 to bell-crank lever 125i which tlirough the Ipawl -and-ratchet connection causes au intermittent rotation of shaft suitable for rotating gears 38,

aml 47 so as to cause the cam faces 46 and 56 respectively thereon proper longitudinal feed ofthe

spindles

8 and 9. Ali adjustable connection 13() is provided between arm 122 and link 123 thereby affordingr means for varying the throw of ratchet-paw] 12S, thus obviously changing the. amount of feed produced u mn the spindles at each stroke of said ratc ietpawl. 'lhe

projections

116 and 117 are formed opposite the extreme horizontal limits of the cam-groove 87 so that the feed of thespindles will occur when the carriage reaches the end of its travel in' each reetion. l

Illustrated by Figs. S, t), and 11 is a vise suitable for holding:r rectangular` stock in place upon the carriage and comprising a hase 1211, four uprights .132 and a top-plate 1213 all of which are securely )inned together as shown in Fie. 9. The ase 131 is secured upon the carriage 10 by bolts 134 and 1215 threaded respectively into

nuts

136 and 1?7- in T-slot 13S. In a channel 139 between the uprights 1513 is an adjusting plate 1,4() composed of two wedges 141 am 142 adapted to be clamped together by a screw 14? passing through a counter-sunk slot' 1411. in the lower wedge into either of the threaded holes 145 and .146 in the upper wedge. 'lhe horizontal surface of the upper wedge. is provided with grooves 147 and 1118 -for the reception of alining blocks 1451. Above plate 14() aml equal in length thereto is a clamping piece backed by clamping screws 150 and 15()2 4which are threaded in the top-plate 1213. This clamp ing piece is of T-shape in cross section and is provided with sockets 151 in the. ends thereof' for the reception of )lnngers 152 hacked b v springs 15?, said plungers bearing against the uprights 132 with sullicicnt pressure to sustain the clamping piece` lult Istill allowing.; it to be readily placed as desired. Pins 151 passing through elongated slots 152 in plungers prevent the loss of the. latter upon the \\'it'lulrawal of the clamping piece from taetween the uprights 1212. Inserted through holes iu uprights 1312.

to produce the knurled head 158. The center oit' this pm is in the same horizontal plane as the center of the spindles and said pin may be con venicntly used as a gage in locating the stock to be operated upon as a portion of it eut away on a plane'tahrough its center as shown atI 155).

device for supporting round stock is illustrated in Figs. 12 and 13. Slidably mounted upon ways 16() and 161 of

bases

162 and 163 respectively are a clamp sup )ort 16+ and a center Support 165. The )ases 162 and 163 are secured upon the carriage by the usual T-slot nuts and bolts and the supports 161 'and`165 are split and provided with

bolts

166 and 167 respectively by which the' are clamped to their respec-l tive ways. Threaded into the clamp support.. 16-1 on either side ot' a V-shaped groove 16S are bolts 16S) and 170. Slotted at 171 and 172 in order that it may be readily placed upon bolts 16S) and 17() is a clamp 173 adapted to engage stock v177 and provided on one side with a rib 171 which makes it' possible by reversing said clamp from the position shown in ["ig. 12 to secure stock having a diameter much less than the dept-h ol the Y V-groove. A center 175 secured in support 165 by screw 1.76 supports one end of stock 177 which is prevented from longitudinal displacement away from said center `by the clamping member.

ln the operation of the. machine it' hollow stock is to he worked the gears 1H and #t7 may'he positioned so that the corresponding high and ow parts ot' cam faces 46 and 56 will be directly opposite each other, butI it the stock is solid as shown in Fig. 1l it will be nece y t'o position one of the cam faces (46) .slightly in advance of the other (47) so that the tool actuated by the former will begin to retract before theA one actuated by the .latter reaches its extreme depth of feed. 'l`he concentric ribs 37 and are .grathtated adjacent their respective cam faces so that they 'may be set to produce any desired precisionized depth of feed within the existing limits.

After the stock to be worked has been secured upon the carriage, approxiniately in its required longitudinal position it may he :wcurately positioned with respect. to the tool-spindles by adjusting theetl'ective length of arm ,112 by means of knurled nuts 109 and. 110, and furthermore the nec( sary scope of reciprocation for the carriage to produce the required length of slot or spline may be cxactlv obtained by setting the adjustable standard H2 to register with the graduation mark on scale 180 which corre- 'spouds to said required length of slot or Similarly tbc feed of the spindles may bc tested by rotating hand-wheel 28.

'lhis invention is not limited to the exact disposition of elements illustrated and described, for changes may be made therein without departure from said invention.

Having thus described my invention what I claim is,-

- 1. The combination of a reciprocatory carriage, a pair of rotary, endwise movable spindles at o )posite sides of said carriage, a ratchet-wheel, a pawl Yfor operating t-he ratchet-wheel, means for causing thel awl to operate the ratchet wheel at the n s of the strokes of the carriage, and means for transferring the etl'ect of said ratchetwheel to both spindles to advance the same.

2. The combination ofareciprocatory carriage, a pair of rotary, endwise movable spindles at. oppositesides of said'carriage, a

pair of devices to ilnpart an endwise thrust` to said spindles to advance the same, a shaft, means for transferrin the effect of said shaft to both said devices, a ratchet-wheel fastened to said shaft, a pawl, and means for causing said pawl to operate saidratchetwheel at the ends of the carriage strokes.,

3. The combination with a machine-frame,

I a carriage mounted thereon and tool-spindles journaled on opposite si'des o'f said carriage, of means for reciprocating said carriage; cams for producing longitudinal movement ofthe tool-spindles; means in connection with the carria e reciprocating' mechanism for intermittent y advancing said cams; and means for varyin the amount of the inter; mittent advance t ereof.

4. The combination of a carriage, a pair of rotary, endwise movable too spindles mounted at opposite sides of said carria e, said carriage being reciprocatory in ,a irection transverse to the axes of movement of the spindles, mechanism -for reciprocating said carriage, independently adjustable cams for varyi the spindles, an means actuated by the carria reciprocating mechanism for turning sai cams to feed the spindles.

5. The combination with a machine-frame, a carriage mounted'thereon and tool-spindles journaled on opposite. sides of said carriage-.,'of power driven mechanism for reci rocating `the carriage; means for manua y operating the carriage reciprocating mechanism; mechanism in connect-ion wit the carriage 'reciprocating' mechanism for causing the longitudinal movement of the tool-spindles; and'means for manually 'opf erating a portion of said last mentioned mechanism to cause the longitudinal movement of the tool-spindles independently of the carriage reciprocating mechanism. I

6.' The combination, with a support, of a' tool-spindle journaled therein; a-rod inthe spmd e and having s. bore at its rear end;

the amount of movement ofa shaft fitted-in said bore; a lug between braced by the head, and bearing against.'L

said in.

7 he combination, with a work-support, of a pitman pivoted thereto; said pitman having screw-threaded ortions; of al ivsaid arm; a perforated swivel block secured to the bracket; means whereb said swivel block may be adjusted longitu inally of the ivoted arm nuts on each side of the swivel lock and engaging the threaded portion of the pitman; and means carried by the pivoted arm whereby the extent of adjustment of the swivel block and bracket may be determined.

48. The combination, with a carriage, of a ,work-support thereon; aV pair of tool-spindles, one on each side of Said work-support; gearing for rotating said tool-spindles; cams aving graduated rims for actuating the oted arm; a bracket ad]ustably mounte on tool-spindles; gears carried by the cams; a

shaft; pinions rigid with said shaft and in mesh with the cam gears; and means for intermittingly rotating said shaft. y 9. In a machine of the class described the combination with a carriage, of a rod or pitman having one end pivoted thereto; a-,

10. In amachirie of the class described the combination with a pair of tool-spindles and a carriage mounted between said tool-spindies, of a cam; mechanism actuated by said cam for reciprocating the carriage; a rockshaft; elements on said cani for actuating the rock-shaft; a pair of ears; mechanism actuated by the rock-shaft or intermittingly rotating said gears; and cams rigid with said gears for advancing the tool-spindles.

11. The combination of a carriage, a pair of rotary endwise movable spindles at opposite sides of the carria the 4latter being reciprocatory in a direction transverse to the axes of said spindles, a cam, connections between the cam and the carriage for operating the latter, and means also actuated from said cam for advancing said spindles.

12. The combination! of-a carriage, spindles at opposite sides of said carriage sa'id spindles being `rotative and endwise movable and the-carriage being reciproca-tory in a di ecton transverse to'the axes f said spindles, a rotary cam, connections between said cam and the carriage for' reciprocating .the

lio

cri

latter, and means associated with said cam for intermittently operating said spindles.

13. The combination ot a carriage, rotary spindles mountedA at opposite sides of said carriage and movable in the direction of their'axes toward and from the carriage the latter being reciprocatory in a direction transverse to said axes, a cam, lconnections between said cam and the carriage for reciprocating the latter, a movably mounted device, the cam having means to operate said movably mounted device, and means actuated by said inovably mounted device for advancing the spindles. v

14. The combina tion of a carriage, rotary spindles mounted at opposite sides of the carriage and movable in the direction of their axes the carriage being rcciprocatory in a direction transverse to said axes, a cam Inounted for rotation, means operated by said cam for operating the carriage said cam having projections, a lever operative by said projections, and means actuated by said lever for advancing the spindles.

15. The combination of a carriage, rotary spindles mounted at opposite sides of said carriage and endwise movable the carriage being rcciprocatory in a. direction transverse to the axes of said spindles, a caln, connections between the cam and the carriage for operating the latter, and means operated by said cam and comprising a pawl and ratchet device, Afor advancing said spindles.

i6. The combination of a carriage, rotary spindles mounted at opposite sides of the carriage and movable in the direction of their axes the carriage being reciprocatory in a direction transverse to said axes, a cam, connections between the cam and the carriage for operating the latter, a ratchet wheel, a pawl coperative with the ratchet, a lever to which said pavvl is operatively connected, the cam having means to operate said lever, and means operative by the ratchet wheel for advancing said spindles.

In testimony whereof I affix my signature in presence of two witnesses.

BENGT M. W. HANSON.

Witnesses:

F. E. ANDERSON, JOHN D. VOOD.