US992890A

US992890A - Metal-forming machine.

Info

Publication number: US992890A
Application number: US50129509A
Authority: US
Inventors: Arthur J Lewis
Original assignee: BAIRD MACHINE CO
Current assignee: BAIRD MACHINE CO
Priority date: 1909-06-10
Filing date: 1909-06-10
Publication date: 1911-05-23
Anticipated expiration: 1928-05-23

Description

J; LEWIS, .METAL FORMING MACHINE.

APPPLIGATHIHiT I II'|BD JUNE 10, 190?. Patented May 23 5 sums-SEEM 1'.

WITNESSES;

A. J. LEWIS. METAL FORMING MACHINE. APPLIGATIOK FILED JUNE 10, 1909.

Patented May 23, 1911;

Ennis-51mm- 2f I Hr mmm I lam:

I WITNESSES.-

% M zf r3 A; J. LEWIS. METAL FORMING MACHINE. APPLICATION FILED JUNE 19, 1909.

' Patented May 23, 1911.

5 amine-511E111 3.

IN ENTOR.

WITNESSES;

WW 1 @MW Patented May 23, 1911.

5 SHEETS-SHEET 4.

WITNESSES:

A. J. LEWIS. .METAL FORMING MACHINE. APPLICATION FILED JUNE 10, 1909.

Patented May 23, 1911.

5 SHEETSB HEE'I 6.

w z .5. P. L 3 3 3 INVENTOR.

WITNESSES: 7 MM! UNITED STATES PATENT OFFICE.

I .ARTHUR J. LEWIS, OF \VATERTOWN, CONNECTICUT, ASSIGNOR TO THE BAIRD MACHINE COMPANY, OF OAKVILLE,

CONNECTICUT, A CORPORATION OF CONNECTICUT.

METAL-FORMING MACHINE.

Patented May 23, 1911. Serial No. 501,295.

To all whom it may concern:

Be it known that I, ARTHUR J. LEWIS, a citizen of the United States, residing at Watertown, in the county of Litchfield and State of Connecticut, have invented certain new and useful Improvements in Metal- Forming Machines, of which the following is a specification, reference being had there in to the accompanying drawings.

My invention relates to new and useful improvements in metal forming machines, and refers more particularly to that type of machine wherein the metal is automatically fed between a plurality of forming tools, then cut oil into a predetermincd length and bent into the desiredgform by the action of the said forming tools thereon.

It is the object of my invention, among other things, to provide a feed for such a machine thatwill operate with greater speed and less power than such mechanisms now in common use; have but few adjustable parts that are simple in structure and operation and arranged so as to be convenient of access; non-friction gripping members that are operated independently of the feed slide; and adjustable pin ]ll(.( 'lltl nism to prevent overthrow hers; means for instantly and positively stopping the feeding of the metal; a graduated adjustment of the feed that will insure the accurate feeding of metal of predetermined lengths; 111611118 for rigidlv holding the metal during the return of the" feed slide; to so design and arrange the cutoff mechanism that it may be quickly and accurately adjusted without the use of the tamping means con'nnon at the present time;'to provide a, metal clamping or binding device that may be operated from fixed cam means; and to apply a swinging form holder so mounted as to be interchangeable with a fixed form holder; and to ac(.:o'1nplish these and other desirable objects'with mechanism that is simple in design, may be constructed and assembled econmnically and will operate at the highest speed andwilh the maximum efiiciency.

To these, and other ends, my invention consists in the metal forming machine, having certain details of construction and com binations of parts, as Will be hereinafter dcscribed and more particularly pointed olll in the claims. I I

Referring to the drawings, Ill winch llh'o new and im pro vcd of the feed men'r numerals of reference designate like parts in the several figures; Figure 1 is a plan view of my improved metal forming machine; Fig. 2 is a front elevation thereof; Fig. 3 is an enlarged sectional view upon line AB of Fig. 1, showing an end view of the feed mechanism; Fig. 4 is a sectionalview upon line C-D of Fig. 1 showing a side elevation of the cut-off mechanism; Fig.

5 is a fragmentary elevati n of the feed slide; Fig. 6 is an end view of the feed rock lever; Fig. 7 is a fragmentar sectional ')ltlll view thereof; Fig. 8 is a side elevation o the swinging former and the parts adjacent thereto; Fig. 9 is a side elevation of the feed slide and bracket; Fig. 10 is a fragmentary plan view of the inner ends of the former slides and the formers connected therewith;

Fig. 11 a sectional view upon line E F of Fig. 1 showing a sideclcvation of the clamping or hinder n'lcchanism; and Fig. 12

is a shape which is the product of my machine, being one of the many forms that can.

be produced thereon.

in the drawings, the numeral 1 designates the bed of the machine. which is supported upon suitable legs 2 and having jounudcd upon one end the main driving shaft 3 upon which the bevel gears -l and 5 are lived. which rcspccti\'el v mesh into the bevel gears 6 and 7 upon the shal'ls S and l). l pou the shaft 9 is a bevel gear 10 which meshes into and drives a gear 11 upon the shall [2 journnled in one end of the machine.

The feed mechanism colllpllws :1 di h 21!) lived on the shaft 12 and having a MltW l lbcrcin that is rotated through the lhumb nut ll and lhrcadcd inlo llnllllflllll block 4;: :i link l-l (mm-cling lhc block -l.;' with a rock lcvcr ll lhal is iolu'nalcd lo lb lived brachcl l5 by the pin lli; a slide IT lbal, is connected with the rock lcvcr -l l b v lhilink it and movablc upon the brackci ll lixcd lo the bed 1. said brachcl l1.-i\'ingllulopplates 5t) atbolh ends thereof; a grip lever 51 that is 'l nlcrmncd on the slide l? by the pin 5:2; :1 movablc grip plalc 5-; that is held against lalcral displacement b v the cap 5H. and is actuated from the grip lcv r Til through the, sct screw ill (but impinges against lbc upper cdgc lbcl'col'. 'lbls sol screw provides means for adjusting llugripping mechanism for mclal olvarious dinmnsiona and regulating lhepressunlhcrcou'and is retained in its adjuslcd posilions by the loch lllll 55. Be-

low the plate is a fixed plate 56 that is held in place by the dowel pin 57 and cap 58. Ad ustably secured to the slide 47 by the caps 59 are the stop pins (30 which strike the stop plates 50 at the end of each stroke of the feed slide to prevent overthrow thereof, which mightoccur as the result of wear and consequent looseness in the various joints between the slide and the disk 39, thereby assuring the' feeding of successive pieces of metal of uniform lengths.

Journaled at both ends in the blocks 61 fixed to the slide 47 is the oscillating plate (32 which contacts with one end of the grip lever 51 to impart a rocking movement thereto. This oscillating'plate G2 is actuated bythe

pins

63 and 64 projecting laterally from the rock lever 65 that is mounted upon the stud 66 fixed in the bed and actuated from the cam (37 on the shaft 8 through the lever 68 that is connected at one end to the rock lever 65 and having a cam roll 69 thereon, which lies within the groove 70 in the cam 67.

The metal from the ro1ls.71 upon the straightener bracket 72 passesbctween the plates 53 and 56 and as the disk 39 rotates a rocking movement is imparted to the rock arm 44 and a reciprocating movement to the slide 17 through the link 48, the length of the movement of the slide being determined by the radial osition of the block 42, and at each limit of the stroke of the slide one of the stop pins 60 abuts against one of the stop plates/'50. During thismovement of the feed slide the oscillating plate 62 moves in front of the

pins

63 and 64 fixed to the rock lever 65, and at its extreme retracted.

position the stop pin- '64: engages the oscil lating plate 62 and moves the same so that the grip lever 51 is actuated and the metal gripped between the plates 53 and 56. This grip upon the metal continues during the on tire forward movement of the slide, when the rock lever 65 is actuated so. as to move the pin 63 against. the oscillating plate 62 and release the grip upon the metal through the movement of the lever 51, when the slide is returned and the above operations repeated. The pin 64, is constructed with a flat head 98 that normally-lies against. one face of the rock level-135 and is pulled into a pocket 99 in said rock lever 65 by the spring 100 when the same is given a quarter turn about its axis. This construction and mounting of the pin 6ft enables the operator to instantly stop the feeding movement by simply grasping the knurled head 101. of the pin 64, give it a quarter turn and the head 98 moves out of the path of the oscillating plate 62. I

The cut-elf mechanism comprises a standard 73 having a lip 74 upon its underside that enters the slot 75 in the bed I; a cutter slide 76 having a cutter 77 fixed lhcrctr; a

bushing 79 secured by the 'set screw 80; and a cam 78 fixed on the shaft 8. A lateral movement is imparted to the standard 73 upon the bed through the stud 81 having a pinion. 82 on its lower end which engages with the teeth in the fixed rack 83 and secured in any of its adjusted positions by the bolt 84 which is threaded into the nut 85 held against rotation in the said slot 75.-

The head of the stud 81 and the bolt 84: are the same shape and size so that one wrench may be used interchangeably. Lateral adjustment of the cut-off standard is obtained by first turning the bolt 8 then shifting the wrench to the stud 81, and by rotating this stud the bracket is moved along the bed by reason of the engagement of the pinion 82 with the rack 83, and when moved into the desired position is then secured against movement by rotating the bolt 84: in the reverse direction. The slide 76 is kept in contact witlrthe cam 78 through the spring 87 which lies within a pocket in the bracket 73 and exerts its tension against an arm 88 fixed in the slide 76. During the return 'movemcnt of the slide the metal is held by a binding machanism, comprising a standard 91 having a rock lever mounted, therein and carrying a roll 92 at onc end which contacts with the cam 79 and having a screw 89 threaded in the other end which engages a block 102 movably mounted in the said standard; a spring 104 surrounding the block 102; and a fixed block 103.

Heretofore it has been the practice to opcrate the feed mcchanism of a machine of this character from a rain or disk'with a fixed or adjustable block and slotted lever mechanism and prevent the overthrow thereofthrough friction devices. This practice has been found faulty in many particulars, more especially from the fact that the friction devices of such mechanism necessitate constant attention to keep them adjusted, the friction heats the/parts, and 'this and more complicated mechanism than in my device, require an excessive amount of power to op crate them, and the speedof movement of the feed is also thereby necessarily limited. In my device, as herein shown and described, the feed mechanism is simple in construction and operation, does not depend upon friction devices, but has adjustable stop pins to prevent overthrow, and can be open atcd at greater speed with less power. Also the time for grippi-n and releasing the metal in my device being in the same relation for any length of feed, which is not the case in machines using a disk and slotted lover mechanism, allows me to use a fixed clamping or binding cam as hereafter described.

'lhe cut-oil standard will accommodate the full capacity of the feed of themachine and its adjustment is obtained by mechanical means rather than by poundin or tamping, as is the present ractice. H eretofore the clampin or binding mechanism has been operate ,from at least two cams that are secured together and have a rotary adjust ment in relation to each other, but this method is expensive and mechanically faulty, because it is difficult to adjust the cams in relation to each other with the requisite n-ieety and maintain them permanently in such ad-- justed positions. In my device all of these difficulties are overcome, and the binding mechanism is operated from a single cam that has a fixed relative position at all times to the shaft upon which it is mounted and requires no ad uSt-ment.

Mounted in the bed of the machine are the

former slides

13, 14, 15 and 16, which are given a reciprocating movement from the cams 17, 18. 19 and 20, fixed on the

shafts

9, 3, 8 and 12. (in the inner ends of these slides are fixed the forming tools 21 by the bolts 22 and are given a slight adjustment thereon by the set. screws 23. The inner ends of these forming tools are shaped so as to co operate in the bending of the metal into the proper shape. Suspended between the inner ends of the formers 21 is the former 24 which is fixed by the bolt 25 to the holder 26 that is pivotally connected to the standard 27 by the removable pin 2Q. \Vhen the holder 26 is in its rearmost position the rear face thereof abuts against the face 29 in the standard 27 and is moved forwardly from this position by the spring 30 which surrounds lhe rod 31 joined to the former 3G, and lies between the plate 32 fixed to the front of the standard 27 and the nut 33, this forward position being shown by broken lines in Fig. S. The standard 27 is secured to the bed 1 by the bolts 34 which pass through slots 35 in the standard and have a limited adjustment from front to roar lbrough the screws at which are threaded in the base of the standard 27. the ends of which impinge against the bolts ill. The swinging former is removed by taking out the pin 2%. and a stationauv former may be substituted if desired. the said stationary l'ormcr Iilling the entire space between the back ot' the plate 32 aml the face 39 in the standard J7. To prevent displacement ot' the pin 2b the bracket 27 is split at 37 and a screw 3H threaded 'therctbrougb. which, when lightened. grips the end of the pin 2%.

In operation. the metal is fed through the nun-hing. by the means heretofore tit-Ht'llllttl. between the former 24 and the forming tool ll upon the slide 15 and its inner end supported by a stop 93 which is adjustable in any desired or well known manner. The. cams are so timed that the slide 15 then moves forward and holds the. metal between the fUI'IiIII 2i. thereon and former 24. at. which time the metal is cut off by the tool 77. The slide 15 continues its movement and forces the holder 26 backward against the tension of the s ring 30 to its stationary position against t a face 29, but the slide 15 continues its movement and folds the metal around two sides of the former24. The back position of the former 24 is shown by broken lines in Fig. 10. At this point the

slides

14 and 16 begin their inward movement and the formers 21 connected therewith fold the ends of said metal around the back of the former 24, at which time the slide 13 begins its inward movement and the former 21 thereon closes upon the bent ends of said metal, thus completing the forming operation and producinga metal shape as shown in Fig. 1. All of the slides are now withdrawn and the metal shape removed from the former 24 by the stripper 94, which is operated through a rock lever 95 mounted upon a fixed bracket 96 and actuated from the cam 86 onthe shaft 9. After leaving the former 24 the finished shapes drop through a hole 97 in the bed of. the machine into a receptacle conveniently located to receive them. There is no limit to the number of finished shapes that may be produced upon this machine by substituting "'"other former tools and the shape shown in Fig. 11 is only inserted for purposes of illustration.

There are minor changes and alterations that can be made within my invention, aside from those herein suggested, and I would therefore have it understood that I do not limit myself to the exact construction herein shown and described, but claim all that falls fairly within the spirit and scope of my invention.-

Having described my invention, what I (ltllll'l as new and desire to secure by Letters Patent, is

I. In a metal forming machine. the combination with a slide; of gripping means thereon: a rotary plate: a rock lever actuated from said plate; a connection between said slide and rock lever; a second rock lever pivotally mounted upon a fixed part; andmeans for operating said gripping means indepemlentl of said slide from said second rock lever.

"3. In a metal forming machine. the combination with a slide: of gripping means thereon; a rotary plate: a-rock lever connected with said slide; a connection between said rock lever and plate; means for ad justably securing said connection to said plate: and means. as a rock arm mounted on a fixed part. and an oscillating plate. for operating said gripping means independently of said slide;

fl. In a metal forming machine. the combination with a slide: of gripping means thereon, comprising a movable member c0nlacting with the metal. and an oscillating plate -for actuating said movable member;

a rock arm pivotally mounted upon a fixed part and imparting movement to said oscillating plate a rotary plate; a connection between said rotary plate and slide whereby a reciprocating movement is imparted. to said slide; and means for adjusting the length of the stroke of said slide.

4. In a metal forming machine, the combination with a slide; of grip tiing means thereon, comprising a movable member contacting with the metal, and an oscillating plate for operating said movable member; a rotary plate; means connected with said rotary plate for imparting a reciprocating movement to said slide; means for adjusting the length of the stroke of said slide at either or both ends thereof; and means, as a rock arm mounted upon a fixed part for operating said oscillating plate during the instant of rest of said slide.

5. In a metal forming machine, the conibination with a slide; of gripping means thereon, col'nprising a movably member con tacting with the metal, and an oscillating plate for operating said movable member;

a rotary plate; means connected with said rotary plate for imparting a reciprocating movement to said slide; a rock arm mounted upon a fixed part; and cam means for operating said rock arm.

6. In a metal forming machine, the combination witlra slide; of gripping means thereon, comprising a movable member contacting with the metal, and an oscillating plate for operating said movable member; a rotary plate; means connected with said rotary plate for imparting a reciprocating movement to said slide; means for adjusting the length of the stroke of said slide at either or both ends thereof; a rock arm mounted upon a fixed part; and cam means for operating said rock arm.

7. In a metal forming machine, the com bination with a slide; a grip lever mounted thereon and actuated by an oscillating plate; a rotary plate inc-ans for imparting a reciprocating moven'ientto said slide from said rotary plate; means for varying the length of stroke of said slide; a rock lever eonnected to a fixed part and during its movement having contact with said oscillating plate; and cam means for actuating said rock lever.

' 8. In a metal forming machine, the combination with a slide; of gripping means connected therewith, said means comprising an oscillating platehaving contact with a grip lever mounted on sai'd slide; means for imparting a reciprocating movement to said slide; and means-for operating said oscillating plate, comprising a rock lever having parts thereon which contact with said oscillating plate upon opposite sides of the center thereof, and means for imparting movement' to said rock ever.

9. In a metal forming machine, the combination with a slide; of a grip lever and an oscillating plate mounted thereon; means for imparting a reciprocating movement to said slide; a rock lever mounted upon a fixed part and having contact points upon either side of the center thereof which contact with said oscillating plate during the movement of said rock lever; and means for actuating said rock lever.

10. In a metal forming machine, the combination with a slide; of a grip lever thereon; an oscillating plate also mounted thereon and having a contact with said grip lever; means for imparting a reciprocating movement to said slide; a rock lever mount ed upon a fixed part and having contact points upon either side of the center thereof which engage said oscillating plate upon opposite sides of its center during the movement of said rock lever; and means for actuating said rock lever.

11. In a metal formin machine, the combination with a slide; o a grip lever there on; an oscillating plate also mounted thereon and-having contact with said grip lever; means for imparting a reciprocating movement to said slide; a rock lever mounted upon a fixed part and having contact points upon either side of the center thereof which engage said oscillating plate during the movement of said rock lever; means for ao-.

tuating said rock lever; and means for mounting one of said contact points on said rock lever so that the same may be moved out of the path of said oscillating plate.

12. In a machine of the character described, the combination with means for feeding metal; of means for cutting the same into lengths; and rack and pinion means for adjustably moving said cut-oft mechanism toward and away from said feed nlCilIlS.

13. In a machine of the character described, the combination with means for feeding metal; of means for cutting the same into lengths; and means for adjusting the position of said cut-01f means toward and away from said feed means, comprising a pinion rotatably connected with said cutoff meclmnism, and a rack connected with a fixed part.

14. In a metal forming machine, the com-.-

bination' with reciprocating slides movable toward and away from each other; forming tools connected therewith; a. fixed )art above said slides; a former holderpivota ly mounted therein; and spring means for moving ,said holder in one direction.

15. The combination with the reciprocating slides; of former tools separably con nected therewith; a standard secured to a fixed part; a former holder having a hinged connection with said standard; a bolt pivotally connected with said holder; a spring slide 80 that before the bination with recifrocatin slides movable toward and away I .tools connected therewith;

rom eac other; forming a pivotally mounted former having a part thereof be tween the said slides; means for feeding ,nfecn between one of said slides and said forrnem and means 'for otperatingvsaiil last orming operation said ,Inetal will be held between the former on said lastslide and said pivotally mounted former and while therebetween conveyed to aposition for the formingoperation.

.17. .In. a'metal forming machine, the com bination with reciprocating slides movable toward and away from each other; forming tools connected therewith a swinging former having a part thereof between the said slides; and means for holding a metal length between said swinging former and one of said slides during the movement of said swinging former prior to the forming operation.

18. In a metal forming machine, the combination with reci rocating slides movable toward and away rom each other; forming tools connected therewith; means for. feeding metal between said slides; a swinging former having a part thereof between the said slides; means for cutting said metal into lengths; and means for conveying said metal lengths between one of said slides and said swinging former from the line of the feed thereof to the forming osition.

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

. ARTHUR J. LEWIS.

Witnesses:

B. G. WARNER, CHAS. L. WARNER.