US1608168A

US1608168A - Riveting machine

Info

Publication number: US1608168A
Application number: US8124A
Authority: US
Inventors: Arthur R Havener
Original assignee: Judson L Thomson Manufacturing Co
Current assignee: Judson L Thomson Manufacturing Co
Priority date: 1925-02-10
Filing date: 1925-02-10
Publication date: 1926-11-23
Anticipated expiration: 1943-11-23

Description

Nov. 23 192e. 1,608,168 A. R. HAVENER n RIvETNG MACHINE Filed Feb. 10 1925 2 Sheets-Sheet 1 L -l l l l l m/g3 7 Arthur" R. Haven/er.'

' 1,608,168 A. R. HAVENER RIVETING MACHINE Nov. 23 1926.

. Filed Feb. 1 0 1925 2 Sheets-Sheet 2.

71,1267?, or' f L J Arthur R. Haz/ener.

Patented Nov. 23, 1926.

uniransrarus vPartnr orti-caff Aarle-on n. Havanna, or WAYLAND, Messner-Inserire,,Assenoaro JUDSON i.. .rrreiuson iennn'rncfrunrne oo., or WALTHAM., MASSACHUSETTS, Aconronnrron OF IVIASSACHUSETTS.

RIVETING INIAOHIN E.

Application filed February 10, 1925. Serial No. 8,124.

rlhis invention relates to a kmachine for punching and riveting sheet material, and particularly to a mechanism for supporting the Work Whilethe latter is being subjected 1' to the punching and riveting operations.

ln the riveting machine upon which my invention is employed there are separate punching and rivet setting instrumentalities, together with a mechanism fory alter- W nately moving each of said instrumentali-v t-ies into the same operative position relatively to the sheet material comprising the Work, the latter first having a hole punched therein by the punching instrumentalities Which are then Withdrawn, and vvith the Work remaining in its initial position the rivet setting instrumentalities are `moved into alignment with the hole that has-been punched, after Which a rivet is inserted therethrough and subsequently clinched.v

ln a machine of this type it is very essential that the Worky shall be supported in such a Vmanner that it will not be moved during the interval that the punching in-y 5 strumentalities are being Withdrawn theres from and the rivet setting instrumentalities are being fed into alignment with the hole that has been punched, for if said hole is not in alignment with the rivet hold` ing and setting instrumentalities, the rivet will not enter the hole kprovided therefor but will be forced through said Work in an objectionable manner and at an undesirable location, thereby ruining the Work. lt is an object, therefore, of this inven-A tion to provide a mechanism for normally supporting the Work which consists of thin sheet material a slight distance above adie which forms a portion of the punching instrumentalities, said mechanism being so ar- Y The invention also contemplates Va construction ot Work support that Will permit the Work to be fed thereon between the suc-V cessive riveting operations Without interference from the anvil.

The invention consists oit a riveting machine as set forth in the following specilif cation, and particularly as pointed out in the claimsvthereoii.

The machine of this invention isanv imv provement over a similar machine for which I have also filed an application for Letters ot the punching and rivet setting mechanisms.

Fig. i is a plan view of the Work support.

Fig. 5-is a vertical section taken on the line 5 5 of F ig, i illustrating the Work support in its normal position; the die and anvil of the punching and rivet setting inm strumentalities being illustrated associated therewith,

Fig. 6 is a vertical section taken on the line 6 6 ot' Fig. 5.

Fig. 7 is a vertical section similar to Fig. 6 illust-rating the position that the Work support .assumes during the punching operation.

Like numerals refer to like parts throughout theyseveral views of the drawinm In the drawings, 10 is the frame oi the machine and l1 is a hopper in Which the rivets employed by the machine arel held in aniass and from which they are fed in a Well known manner to the rivet setting instrumentalities, Mounted upon lthe frame 10 is anauxiliary frame l2, the latter being rigidlyv fastened in any suit-able manner to a vertical shaft 18 `Which is-mounted to rock in bearings 14 and 15 formedintegral with the frame 10. The auxiliary frame 12 em'- bodies therein a head portion 16. located at the. f orvvardend thereof in Which` a"ri'vet carrier slide 17 and a rivet carrier 18 of well known construction are mounted `to 'slide in a vertical direction. Also inounted in the head 1G at one side ot the rivet carrier slide 17, see Fig. is a punch slide 19 at the lower end `of which is `a punch. holder l carrying a punch 21, Mounted in the head 12 at the rear of the rivet carrier slide l17 is a stripper slide 22, the latter carrying a `stripper 23 at its lower end. Located upon the opposite side ot the rivet carrier slide 1'7 from that upon which the punch slide 19 is Vlocated Vis a driver slide 2li, the latter carrying a driver 25 at its lower end, see Fig.

The rivet carrier slide 17., punch slide 19, stripper slide 22 and driver slide 24 are grouped closely together within the head' 1G, all being adapted to he 'moved vertically within said head hy mechanisms hereinafter to he described, all of said slides being` held in said head hy a hearing plate 28 which secured tothe 'front of said head. L ,y

A` rocking movement` is imparted 'to the auxiiiary traine 12 and shaft 13 by lever 27 pivoted at 28 to the 'traine 107 one end of said lever 27 being; operatively connected by a link 29 with said traine 12, while the other ond of said lever has acain roll 30 journailed thereon, the latter proiecting` into a suitable groove 'formed in the periphery of a cani 31 tast to a shaft 32, the latter being driven in any sui table manner from aniain drivingF shaft 33.

The work, as tor example, sheetinaterlal A, which is to he operated upon 1s supported upon a wor support hereinafter to he described, which is secured at the outer end oliA an arm 311 ornied integral withv the traine 1 10. Mounted in .the arm Sli which is slidahle in a horizontal plane hetween ways 3G Yformed in said arni. The slide 35 is securely held in the ari'n Se by a plate 37 which is detachirhlysecured to the upper surface oiif said erin. The slide carries at forward end adie 88 and an anvil 39 ot well lrnown construction, and a rpassage /lO is provided in said slide for the purpose oit carrying1 oitl'i'he small/particles of metal that are punched troni the sheet nniteiialv A.

The `sheet niateriai A wnich `constitutes the worlr is supporteda during the punching' andv riveting operations, upon a work support-i15 the latter being pivoted at.. 42 to a hraclret in turn mounted upon the plate S7. The worksupport is slotted at its forward end at lla, thereby 'forming fingers 115 upon which the material A resta. a `flat spring clainp 16. being provided for fthe purpose of holding'the sheet material upon the upper edge of `said fingers.` The spring clainpe secured tothe work support 41 in a manner to ro i y in unisonV therewith and is provided "Wit-hi anA opening 47 located is a slide 35 terial A will he held is fast to the shaft 32.

to hold said work support in its nornial raised position, which is determined hy a stop 49 at the rear end of said work support engaging with an abutment 5() formed upon the bracket 43; `When the work support is located in its normal position, the sheetinaat a slight 'distance above the upper surfaces ot' the die 38 and anvil) `as illustrated 'in Fig. 5.

Stops 51are provided upon opposite sides of the work supportll for the purpose limiting the rearward movement or the work A' upon the worli support. i The stopsfl are adjustably secured in the` work support (11 by "suitable screws 52; n

A reeiprocatory movement is imparted to the slide 35 in order that the die 38 and anvil Slniay he positioned to co-operate with the punch 21 and driver E25 respectively "hy inechanisrn as followsz-Rigidly secured in any 'suitable manner to the vertical roch shatt 13 is an arm 53.', and the latter is operatively connected hy a link 54 to a` hell crank lever 55 pivotally mounted at 56 upon the traine 10. The hell crank lever 55 is in tur connected by an adjustable connecting rod 57 with a bracket 58 Arigidly `fastened tothe slide :It will, therefore, be seen that the pivoted at 60 upon the traine 10 and the front extreinityhl of said lever 59 is cylindrical in ifori'n andfprojects into a slidingl hlocli G2 which `is i'nounted in a n'ieinher rigidly eecuredfto' theaipper enticiiiity ot the punch slide l19. `A rocking niovenient isiinparted vto the lever hy a cani which descends, it car''ieswith it the stripper slide 2, and. when the punch 21 engages the work A resting upon the work support lll, said work is forced down wardlycarrying v-Jith it the worl support until therwork rests upon the die 38, after `which the punch is forced through `said `work and a hole is formed therein.- The punch 21 and stripper 23 then rise, the latter a very `alight amount, and atter said stripper Qfhas heen released trein the woricin manner hereafter to` he de scrihedgthe ivorl' support ll and the work thereon ywil; return to their nornial positions. i f

`The stripper `23 which is iorceddownivardly hy the punch 'slideV V19 during the downward rnoveinent of the iatter is held-in a position to'stip the worl A. from the As the punch alidel)V punch 2l during the upward movement of the latter byra pawl 65 pivotedv at 66to the arm 12 oit the frame 10said pawl engaging a notch 67 provided in the stripper slide 22 and being held in said notch by a spring` 68. The pawl 65 is released from the notch 67 during the upward movement oi' the punch slide 19 by a cam G9 fastV to said punch slide, said cam engaging a pin projecting laterally from the pawl 65, thereby allowingv said stripper to move upwardly to Aits normal position.

A vertical reciprocatory movement is imparted to the driver slide 24 by a lever 71 pivoted at 72 upon the frame l0, and the front extremity 7 3 of said lever 7l is cylindrical .in form and projects into a sliding block 74 which is mounted in al member 75 rigidly secured to the upper extremity of the driver slide 24. The lever 7l is rocked by a cam 76 which is fast to the shaft 32..

As the driver 25descends to force a rivet a located in the rivet carrier 18 from the latter and through the opening that has been punched in the work, the work support 4l and work thereon will be forced downwardly as the under side of the rivet head engages the work until said work is deposited upon the upper surface of the anvil 39, after which the rivet is clinched to the ma` terial in the usual well known manner. lNhen the driver again rises, the work support and work thereon will again rise and return to their normal positions.

rlhe general operation of the mechanism hereinbetore specifically described is as follows :The work A which consists of very thin sheet material is placed upon the work support 4l beneath the spring clamp 4:6, the latter securely holding` said work upon the upper edges of the fingers 45 at the forward end of said work support. At' this time the work-support ll is located in its raised or normal position in which position it is held by the spring 48, and the work A is located a. slight distance above the upper surface of the die 38 and anvil 39.

The punch 2l and stripper 23 next descend and the punch 2l upon engaging the work forces the latter downwardly together with the work support 4-1, depositing said work upon the upper surface of the die 3S, after which said punch continues downwardly, punching the hole in said work. The punch and stripper then move upwardly allowing the work support Zll and work A to return to their normal positions, and if it happens that a slight bur or flange has been formed by the punch 2l around the edge of the hole which might cause the work to be moved upon the work support during a movement of the slide 35 beneath said work, the possi bility of such interference with the work is eliminated by the removal of the work from engagement with the die 38'.

The' rivet setting instrumentalities Vare now moved into alignment with the hole that has been formed in the work A, the auxiliary frame l2 being rockedto position the rivet carrier 18 and driver 25 above said hole, and the slide 35 being moved beneath said work toy align the anvil 39 with said rivet carrier andd'river, after which a rivet a located in said carrier is forced therefrom and inserted 4in said hole, said rivet subsequently being clinched 'to said workin the usual well known'manner. The driver 2th`en rises and the work support ll and work A which have been forced downwardly during the riveting operation lagain move upwardly to their normal positions, leaving sufficient space between the clinched end of the rivet a and the upper surface of the anvil 39 to permit an operative to manually feed said work A into position to receive the next rivet without there being any interference between the anvil 39 and the previously inserted rivet. W hen the work has been correctly positioned to receive another rivet, the sequence of operations. previously mentioned is repeated kin attaching other rivets until the rear edge of the work A engages the stops 5l which determine the position of the last rivet to be inserted in said work.

I claim:

l. A machine for punching and riveting sheet material comprising, in combination, punching instrumentalities embodying therein a punch and die, rivet setting instrumentalities embodying therein a driver and anvil, a work support including a pair of iingers normally positioned to support sheet material at a distance above said die and anvil, means to impart a rectilinear reciprocating movement to said die and anvil between said fingers, said work support being adapted to be forced downwardly to bring said sheet material into contact with said die and anvil by said punch and driver respectively during the downward movement of each, and means to return said work support and sheet material to theirnormal posit-ions after each downward movement.

2. A machine for punching and riveting sheet material comprising, in combination, a yielding work support including a pair of fingers, a slide mounted beneath said work support and projecting upwardly between said lingers and embodying therein a die and anvil, a punch, a driver, means to alternately move said slide to position said die and anvil in alignment with said punch and driven respectively, means to move said punch into co-operative relation with said die to punch a hole in said sheet material, and means to subsequently move said driver to force a rivet through said hole and clinch the same in said material, said work support being' adapted to be forced downwardly to bring said sheet material into contact with said die l Sheet material comprising, in combination, a

mein frame, an auxiliary frame pivotally inounfed. upon said main freine, e punch and driver mounted upon said auxiliary frame, a slide mounted upon said lnain frame and ernboclying therein e; die and anvil, u Work support pivotally mounted upon seid main frame and adapted to normally' support sheet materiel at u, dist-ence above said'die and anvil, means to clamp seid sheerj mate rial upon said Work support, nieansto alter-V nate-ly inove said punch and driver intothe Same operativeA position relatively to said Sheet material enel tomove send Slide to p0- sltlon `seid che 'and anvil to co-operate with seid-punch and clriverrespectively, seid Work support beingveclapted to beV forced clorvir Werdly to bring Said Sheet` materiel inro contact with seid die andenvil by `sei/rl punch and driver respectively during che downward movement of each, and means to return Suid Work` support encleheet material to their normal positions Lifter eechdownwerd movernenc.V i `Y `In testimony whereof have hereunto `set rny hand.

ARTHUR nnvnnnn.