US921983A - Indexing mechanism. - Google Patents

Description

B1. M. W. HANSON.

INDEXING MEGHANISM.

APPLICATION FILED APR.17, 1905.

9m @83. Patented. May 18,1999.

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B. M. W.HANSO N. INDEYXING MBGHANISM. APPLICATION FILED APB.. 1'1, 1905.

Patented May 18, 19019;

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B. M. W. HANSON.

INDEXING MEGHANISM.

A P P L I A T I 0 N F I L E D A PR.. 17, 1905. 92,983 Patented May 18, 1909.

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"9 T T sa i fi @MTE trMTE ien-TENT OEErCE. n 'A BENGT M. w. nANsoN, OE HARTFORD, CONNECTICUT, Ass- I GNORTOPRATT a wHITNEi COMPANY, or HARTFORD, CONNECTICUT, A CORPORATION OF NEW JERsEY.

i` INpEXING- ME'CHANISM.

To all whom it may concern.

Be a known thai, BENGT M. w`. HANSN, a citizen of Sweden, residing at Hartford,'inl

the eountyof Hartford and Stateof Con;

nectic'ut, have invented 'certain new andusef V iar, andv may be operated in ..other.ways

`without departure' from the invention.A 1

Primarily the object of the invention is the.

provision in connection with a rotatable element oi improved means for 'locking and releasing, indexing and stopping said element.

A further object of the invention is the provision of improved means actuated "by Huid-pressure for accomplishing the results above set forth.

A further object 'of the' invention is the provision of a series `of slides for locking-and releasing, indexing, and stopping the toolsupport or other device. w

Other objects yof the invention will be hereinafter set forth.4

In the accompanying drawings, Figure v1'` is aplan view, largely in horizontalsection, of a form of machine'in which my invention is embodied. Fig. 2 is a longitudinal, vertical section on line 2-2 vof Figl. `.Fig.. 3 is a detail, partially lin section, of'partof' the indexing-devices. Fig. 4 is a side elevationl of aj machine inwhich my invention is ernbodied.' Fig. 5 is a section on line. 5--5of Fig. 2. Fig. 6 is a horizontal section of the fluid-pressure cylinders, showin the pistons f in elevation, and Fig, 7 is a ongitudinal,

vertical section on part of line 2-2 of'Fig. 1,

showing one 4of the chambers, and the piston 'spciacation ci Lettersratent.. applicati@ filed April 17, 1905.3'

Patented May is; 19.09.. serial-rimanente.'

- a turret 3, provided withhsualppeningsfor tha-reception of tools: Journaled in the' frame'is'a shaft "4, driven by gearing actuated ib'y'a'l pinion (not shownl-On a'shaft 5', also journaledin the frame and carrying -a drum 6 loverwhich a crossed-belt 7 and a. straight belt 8 are passed.

Designateaby o is a chuokispindietarry! ing Vpulleys v10 and 11, respectively, saidpulleys being clutched to .the spindle 9 in' such a way (not shown), thatno matter what may be the direction of rotation of said spindle the drum 6 will always be driven in the same direction. Upon the end of spindle -9 is a chuck 12, and for driving said 'spindle ordinary back gearing, designated yin a general way by 13, may be employed.

IDriven bythe shaft 4 is a earn-drum 14, A

having cams 15 for acting upon aroller-stud 16 depending from the turretslide 2 through Shaft 4 carries at its a slot in the frame. right-hand end a pinion (not shown), which engages with a gear 17 for driving the'camdrum. l

As thus far be regarded as conventional, and specifically tion.

Any means desired fdrive the cam-drum, and any form of chuck`' spindle maybe usedwithout departure from the invention.

Designated by 18 isr a casting havinga 4 series of ' cylinders 19, 20 and 21, said castin being supported upon the turret-slide 2, an labutting at its rear'end against flanges 22 thereof, as shown more clearly in Figs. 6

described the parts shown may may be [employed to I as constituting no part of the present invenand 7. A plug 23 closes' the rear end of the cylinder 19 and saidplug is secured in place by. a vin 24,- While the forward end of said cylin er is closed` by 'a langedplug to receive a piston-rod, as will after explained. i

e herein- Communicating with thetop of the cylin-` I A der 19 are a pair of pipes 26, 27, respectively, through which motive-Huid under pressure,

25 bored for instance, col-npressed air, is delivered at the proper times to each end .ofv the cylinder,

as will be hereinafter described. In the cylinder is mounted a piston 28, shown as of spool-sha e, although the form is immaterial, and t e rod 29v of said piston is threaded at its rinnerend and is provided withnuts and washers 30 tor securing it in a bore of an angular projection 31 o'f a slide 3l, for actuactuated bythe piston 36, for a shown in Figs. 1 2 and 5i A rab Y' illustrated in Fig. 2.. t v

Mounted onl a reduced lower en'd"472 of the Qjpiston 32; and Jack-slide 35, and rotate the ating a locking-bolt hereinafter described. In cylinder 20 is a piston32, the rod 3 3 of which is coupled in a similar mannerto ay slide 34, having rack-teeth 35, fora purpose hereinafter stated. In the cylinder-|21 apisfag ton-V 36 is mounted, and said piston is provided at itsfinner end-with a reduced extension 37 A slide 38 having an' offset lug 39 is urpose hereinafter eXV laincd. Each of the slides 31,l 3.4 and 38 is tted in guideways in a raised intermediate part 40 of the'turreteslide, and said guideways are covered fby cap-plates 41y (as shown in Figs.'1 and 2).

Secured to the' part 40 ofthe slide 2 .by screw-bolts 42, lone of which passes through a spacing-washer 4 3, is a circular` block 44 havinggan axial cone-seat 45, said. block being notched or slotted at 4 6 for a purpose hereinafter stated. A bolt 47 passes through this cone-seat and through .a bushing 48 in* serted in -an opening in Ythe part 4() of the turret-slide, andbelow. said bushin` 4is provided with a circular'iange 49. Ie ed to r 'thisbolt is a turret 3 having a tubu ar depending projection 51, said' projection being conical exteriorly to iit the cone-seat 45.`

A locking-ring 52 is secured by bolts 53 in the chambered ower part -of the turret, and said ring is provided withv a series of peripheral slots 54 in its dependingperiphery, as eted vportion 41 in the cap-plate 41 sfustains"one side 'of the'turret and the other side rests u on a b'ar 55, Vrabbeted to receive the hea cfa. screw 5`6 by which it is secured tothe end of the slide 2. Usual tool-sockets 57 are formed intherturret, and adjacent to its lower. end perforated bosses 58 are provided for the re ception of the lShanks of headed, stops' 59', which coact with the slide 38 in a manner hereinafter explained. A key 60 secures the turretto the bolt 47 and the head 47 of said bolt bears against the top ofthe` turret'as bolt.47 is a ratchet' 63,1havinga- Groove inits hub to receivel a s line A64, yas illustrated-iul Figs. 2- .and 3.y oosely surroundingfther ratchet 63 is a char'nbered disk 65,to `f.fthe upper surface of whicha-toothed segment;66 is secured b yvrivets 66. ,said-.Segment being' in mesh with the `rack35 ofuslideg "Moun't', ed .cna pivot 67 of thegchamb'ere'c n is" a pawl 68, which is held"in'engagenlentzwith" the ratchet63 by a spring' 69-secured tothe periphery of said disk. At its inner end the slide 31 is .extended vertically' to form a lookin-dog 312, said` dog *engaging theslots 54 in ocking-ring 52,`.and.when retracted tting in the slot 46 of thel circular block 44.

To take up wear of thelocking-bolt slide 31, adjustable gibs .70 are provided, said gibs having threaded ends passing through the bar 55, and being equipped with nuts 71 after they have been adjusted theports- 83 in the slide 2 an bearing a ainst theI outer side of said bar, 'as

.shown-in i 2.and Fig. 5. Posts 72 risin from'th"eslic e 2 are provided with threade( seats for the reception of screws 7 3 bearing ainst the ends of thegibs70, and checknuts-7 4 lock. said screws againstmovement .E fAs above stated the locking-bolt slide 3,1

is actuated bythe piston 28 in the cylinder 19 ,and whenluid under pressure is admitted the said slide --a-nd'its lockingf'do 31? will be withdrawn vto permit of a parta `rotation of bei` 19, and said vports communicate, respec formed in the inner Wallof the piston-cham* y tively,I with passages 77 and 78 in the casing f 18,. As the locking-Slide -is Withdrawn and when the end of the piston 28 uncovers the port 75, uid will rush through said port 7 5,

into passage 7 7, and from saidjpassag'e through a port 79 into piston-chamber 2.0, where it acts against piston 32, thus operating the .rack 34, rotatin a the 'disk' 64 and its pawl 68, and turning t e turret to bring a new tool into position.. Aspiston 32 Withdraws it'will pass a port 89 opening into a passage 81 of casting 18 in communication with the piston-chamber 21, and fluid will then enter said chamber, advance said piston and shoot the slide 38 forward to engage one of the stops 59, and 'arrest fur-ther rotation of the turret. As the operationis completed the supply of motive-fluid is cut-ofi` from. pipe .2 6 by suitable valve-mechanism (not shown) and is turned into the ipe 27, thereby forcingA the locking-bolt s ide 31 forward and causing itsl dog to enter the notch 54 opposite' ythe same vand again lock the turret against rotary movement. A port 76 leads from the cylinder 19 into the passage 78, and 'leading fromA said passage to the rear side of 'the'V iston-chamber 20 is a port 82, through whici the fluid rushes whenv the piston 28 v.passes by said port 76, to thus actuate the machinev is in operation, the motive-Huid be# ing Valternately switched from the pipe 26 to ppef27, and'exhaust taking place through communicating with the cylinder 19.

' .After the'piston 36 has been advanced to casting 18 and p port 80, c 1in er 20, port 82, passage 78, port 76, cylin er' 19, and ports 83, thus leaving the piston 36 free to'be forced into the cylinder 21 by slide .38. and the turret-stop 59 in engagement 'therewith as the turret rotates, but when the piston 32 'retreats in its cylinder 20 far enough to uncover the port 80, motivefea-1,983

i fluid will rush into cylinder 21 back lof the piston 36' andA will immediately actuate the saine to throw the slide 38 forward to coact with the nextv stop 59, and again arrest the turret. It will thus be seen that the pistons 28l and -32 act as valves for each other and for the piston-cylinder 21, thus' insuring the proper timing of the parts operated by'said pistons, and controlling the movement of the and locked, and exhaust from the series of cylinders has taken place through the ports and passages described. When in the operation of the machine it is necessary to index the turret, fluid is admitted to the pipe 26,

and the lpiston 28 is forced back to withdraw the locking-dog 312, and when said iston passes by the port 75, fluid will enter t e inner end of chamber 2.0 and will actuate the piston 32, which, through the means described, will rotate the turret and push back -the locking-slide 38. When the piston 32 is retracted ast the port 8() Huid from the cylinfder 20 wi l entercylinder 21, force forward piston 36, and advance the slide 38 toa position Where its end will intercept the stop 59 of theturret being brought into osition, thus arresting the movement of sai turret. Bv then diverting the supply of fluid. from pipe 26 to pi e 27 the locking-'slide is advanced, and t e turret-rotating slide is also advanced to carry the turret-actuating pawl back of the next tooth in ratchet 63 in readi ness for a new o eration.

Changes may e made in various details of the mechanism shown. and described without de arture from the invention. So too, the

:sli es for performing the various operations describedmay be actuated by various means different from those shown and described without departure from the invention. It is furthermore, distinctly to be understood that the invention is generally a plicable for indexing purposes, and is not limited ,in scope to use `with turret-lathes.

vHaving thus described my invention,` what I claim is 1. The combination, with a tool-carrying turret, and with a shaft to which said turret is secured, of a notched locking-ring carried by the turret; a slide having a locking-dog; a piston connected to .sa-id slide a pistoncylinder having ports; means for sup lying fluid under pressure to said piston-cy inder; a second piston-cylinder having ports communicating with the other cylinder; a rack; a piston in the second cylinder for actuating said rack; a carrier; a toothed segment rigid with the carrier; and means actuated by said -carrier for indexing the turret-shaft.

2. The combination, with a support, of a piston-cylinder; means for supplying mo-A tive-'fluid under pressure to said cylinder; a piston in the cylinder; a slide connected to the piston-rod; a rack carried by said slide; a vertical shaft; a rotary carrier loose upon said shaft; a segment rigid with said rotary carrier, and in mesh with the rack; a pawl mounted on the rotary carrier a disk having ratchet-teeth rigid with'the vertical shaft; a chambered tool-carrier keyed to the vertical shaft; a locking-ring having -a series of notches, said ring being secured in the chamber of the tool-carrier; la slide having a dog for entering the notches of the locking-ring; a piston-cylinder communicating with the first-mentioned cylinder; and a pistonin the second cylinder, said piston being connected tothe second slide.

3. The combination, with a' plate having flanges, of a casting provided with a series of communicating cylinders, said casting being secured to the plate and abutting against said flanges; a piston in each cylinder;

4means for supplying motive-fluid to one of the cylinders slides actuated by the pistons; a tool-carrying turret mounted on the plate g means actuated by one of the slides for locking and releasing said turret; means actuated by another slide for indexing said turret; and stop-devices on the turret coperating with nother of the slides.

In testimony whereof l affix my signature in presen-ce of two witnesses.

BENGT M. W. HANsoN.

Witnesses:

SoLoN E. DAvIs, CARL E. STEIDEL.

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