US2526237A - Adjustable mounting for wire drawing dies - Google Patents

Description

Oct. 17, 1950 c. D. JOHNSON 2,526,237 I ADJUSTABLE MOUNTING FDR WIRE DRAWING DIES Filed June 16, 1945 I INVENTOR q CHARLES [2 JOHNSON Br Mfi AT TORN Patented Oct. 17, 1950 Q PATENT- QFF CE ADJUSTABLE. MOUNTING FOR WIRE DRAWING ones "b naries I). 'Jgohnson, Worcester, Mass, assignorto Joh n Ste fi a s-i &Wire Company, 'Inc., Worms: rpo'ration of Massachusetts :Arrfiatifilun 116 5. ai rgo. "599.890.

' h present inventi n mates .to' ife drawin apparatus and hasfforlitsf'object to provide an improved mounting for the Tdiesl'e niployj'ed .in connection withsuchiapparatus', whereby any such die may be readily adjusted with. reference to the line of movementof the wire, as it'is drawn through :the die on to the surface ota wire drawing block.

Briefly stated, the present invention contemplates an arrangement whereby the position of a die may be adjusted in several differentldirections with'reference to anassociated wire draw- 7 in block, with the die itself being angularly adjustable about the wire being drawn therethrough. Furthermore, the improved construction such that anyone of the adjustments hereinafter described can-be-made independently of and without-disturbingthe-ether adiiustments, so that after the die mounting has beeninitially set up andwire is beingdrawn through the die,

axis Z Z, passing through the intersection of the axis Y- -Y'with'the draft line "The invention further contemplates the provision of means for adjusting a slide 6 carrying bothfth bracket 5 anddieholderfi 'upand down'jwith respect to the'wire receiving suriace oi the block final minute adjustments can be made without interrupting the wire drawing operation. The

above and other advantageous -fea ture s of the invention will hereinafter more fully appear from the following description considered in ;con-

n c i w h a ompany n r win in which:

, Fig.1 .is a diagrammatic view in perspective illustrating the relation between the several adjustments of my 'improveddie view not being to scale. I

Fig. 2 is a view, partially in section andpantially ,inside elevation, .of a mounting for. a wire drawing die embodying .the present invention.

' Fig. 3 is a vertical sectional'view along the. line mounting, this '3-'-3 of Fig. 2, looking in the dire'ction'of .the

arrows.

Fig. 4 is a rear elevation of the device shown. in

Eig. 2,. as viewedr-fromlitheiright;'

= Fig.1 :5 is. ;-a. plan .v'iew. :ofot-he tdev'ce shown-.in

'rRe'ferring to the drawings,:the:general princi plesyinvolved .imthe; construction; are illustrated diagrammatically.:in" Fig.-.1,f=wherein wire lis showmas :being drjawngthroughza;die. 2';on, to

the surface of.- a: .wirei-draw'ing-jblofck; 3, with the line v.of movement. .of the "wifetxrl bein g d d .at X--.X, hereaf terizjref erred to as the. .dra'ftdine. In1aorder-:to insure that ther-wire ,l 1 will, properly pass-rthroughfthegdie. land on .130 theiblock 3, the

invention contemplates..-an arrangement whereby a holder l for the die 2 maybe adjusted abouta substantially vertical axis YY intersecting the draft line X-X, and whereby; a bracket 5 for lifijbide lfi yi wa e a gregate i that the die holder 3, as well asadditional means for angularly adjusting the die 2' within its holder 4 about the Wire I. I'T

Referring now to Figs. 2 and 3, it will be seen 4 is in the form of 'a disk providing a central opening i -for "receiving the die 2. The "holder :4 also provides an upwardly extending pivot pin '1,'ireely'recei ved in an open;

ing 8' providedin a forwardly extending'arrniia of the bracket 5.

Aoolla r 9serves .to vertically position the pivot pin '1, so that the .holder 4 is suspended 'frornthe bracket 5, whileflbeing free to turn about the pin axis Y--Y of Fig. ,1. The pin I extendsabove the collar 9 and carries .a worm gearl'll in mesh with a worm lf l turnable on a shaft 12 'moun'ted between ears I3 provided by the bracket arm ea; As best shown in Fig. 5, one end of the shaft lzprovides a knob "I 4, whereby theworm ll may be turned ,to impart angular movement to the holder l about the pivotal axis Y- Y, as the worm gear Lois, turned'in'one direction, or the other. Obviously, the rneshing of the teeth of the worm gear 10 with the worm .II will cause the die holder 4 jto maintain its position after an adjustment .on the bracket. While worm gearingis shown for obtaining pivotal movement of the .holder "4, spiral or helical gears canbe employed for the same purpose.

The bracket-.5 also provides a downwardly extending ar'mfjb carrying a pivot .pin 15 extending freely through an opening [6 provided in the slide -6. The pin I5 is fixed with respect to the bracket arm 5b, and carriespositioning' col-. lars I! 'for maintaining the rear face of the bracketbinengagement with the front face of axis Z--Z of Fig. 1.

the slide 6,--with the .bracket being capable of pivotal movement on the slide "about the pin yond the slide collar I! and carries a worm gear [8 inmesh with awlorm l9.

As best-shown in Fig. 4, I ed on a shaft .20 turnable in lugs 2| projecting from the back of the slide 6, and the'shaft 21,0 extends laterally from'the slide, with its outer end carrying'an operating knob 22. The knob 22 provides meansfor readily turning the shaft 2%! and through it'the Worm wheel l8, thereby imparting angular movement to the bracket The pivot pin extends be the WormjlB is mount;

about the axis ZZ of its pivot pin l5. The engagement between the worm Wheel I8 and the worm E9, or any equivalent gearing, maintains any desired adjustment of the bracket 5 and, obviously, such adjustment can be made independently of any previous adjustment of the holder 4, as described above. 7

As best shown in Figs. 4 and 5, the slide 6 is mounted between vertical guideways 23 provided by the side members 24 of a suitable frame, which also comprises a base 25 and top member 26, It is to be noted that the distance between the base 25 and top member 26 is greater than the length of the slide 6, as measured vertically, and while the slide 6 is frictionally held between the guideways 23, means are provided for closely adjusting the position of the slide 6 within the frame. To this end, a screw 21 is in threaded engagement with an opening 28 in the top frame member 26, with an unthreaded portion 29 of the shaft 21 passing through the slide and secured against longitudinal movement by means of a head 30.

The upper end of the shaft 2! provides an operating knob 3 I, so that turning of the knob 3! will cause the threaded portion of the shaft 27 to move either up or down with respect to the top frame member 26. Therefore the slide 6 can be moved vertically between the guideways 23 within a very close range of adjustment, without disturbing any previous adjustments of the die holder 4 or bracket 5, and any desired adjustment of the slide 6 can be maintained by locking the shaft 21 against turning by means of a nut 32.

As previously pointed out, the invention also contemplates the provision of means for angularly adjusting the die itself about the wire being drawn therethrough, so as to insure that the die will wear evenly. As best shown in Figs. 2 and 3, such adjustment of the die 2 is obtained by mounting the die on an adjusting ring 33 that is rotatable within the holder 4. To this end, the ring 33 provides an opening 34 for receiving the die 2, with a shoulder 35 preventing sidewise movement of the die in the direction of the draft on the wire I.. Suitable meansare provided for preventing turning of the die 2 within the ring 33, as by means of a key 36.

The ring 33 is freely received within the opening 4a of the die holder 4, and the ring is held against sidewise movement by means of a collar 31 and a retainer 38 threaded within the opening 4a. In order to impart turning movement to the ring 33 and the die 2 held thereby, the outer continuous rotative movement to the ring 33 while wire is being drawn through the die, the socket 42 provides means for conveniently coupling the worm 40 to the end of a flexible shaft .43 continuously driven from a source of power,

as indicated in dotted lines in Fig. 2.

In the utilization of a die 2 mounted in accordance with the disclosure of the present invention, the several adiustments that have been described are employed in order to insure that the best results are obtained when drawing wire through the die on to the block 3. For example, the up and down adjustment of the slide 6, carrying both the bracket 5 and the die holder 4, is employed to regulate the height of the draft line X-X with reference to the wire drawing block 3 to insure that the wire will be drawn on to the block at just the right point. .On the other hand, adjustment of the holder 4 about the pivotal axis YY by means of the knob l4, and adjustment of the bracket 5 about the pivotal axis ZZ by means of the knob 22, will impart exactly the desired degree of tilting to the die in different planes to cause the wire to lay properly as it coils on the block 3.

Such tilting or casting of the die is a delicate problem in wire drawing, and it has been found that minute adjustments of the tilt of the die, obtainableby'turning the knobs l4 and. 22, respectively, permits laying the wire as it is drawn in a coil of given diameter, generally corresponding to the diameter of the drawing block or drum. That is ,to say, by the above described adjustment of the die, successive coils of who drawn on the block can be caused to lay dead,

i. e., without exhibiting any tendency to spring apart and cause snarling.

As previously described, the die itself can be angularly adjusted about the wire being drawn therethrough, and this adjustment is 'useful in preventing undue wear of the die opening. With a die fixed in its holder, the continuous drawing of wire therethrough Will in time result in wear on the die opening, which wear will likely to be at one side of the die, especially when a cast is imparted to the wire being drawn. By being able to angularly adjust the die 2 about the wire, through turning of the ring 33, such wear of the die can be equalized and be made entirely uniform, by imparting a slow rotative movement to the worm 40.

From the foregoing, it is apparent that by the present invention there is provided an improved mounting for wire drawing dies, whereby a die so mounted may be readily adjusted with reference to the draft line as well as the drawing block, so as to obtain extremely favorable results. As pointed outabove, the various adjustments can be made independently of each otherjwitli the assurance that when an adjustment is once made, it will be maintained during the wire draw ing operation. Furthermore, the various adjusting mechanisms are so arranged as to be con-' veniently operated while the wire drawing operation is in progress, so that final minute adjustments can be made to obtain the desired results, while actually observing passage ofthe wire through the 'die and on to the drawing block.

; 'Iclair'n:

1. An adjustable mounting for wire drawing dies comprising in combination, a fixed frame, a slide vertically movable with respect to'i said frame, a bracket mountedon said slide and turnable about a horizontal pivot extending through the slide, with said bracket providing'a portion projecting beyond andparallel to the axis ofits pivot, and a die holder mounted on the projecting portion of said bracket and turnable about -a pivot extending vertically through said bracket portionand intersecting the pivotal axis of said bracket, with said die holder providing a circular opening for receiving and supporting a die, and with the central axis of said die-receiving opening passing through the intersection of the pivotal axes of said bracket and said holder.

2. An adjustable mounting for wire drawing dies comprising in combination, a fixed frame, a

slide vertically movable with respect to said frame, a bracket mounted on said slide and turnable about a horizontal pivot extending through the slide, with said bracket providing a portion projecting beyond and parallel to the axis of its pivot, a die holder mounted on the projecting portion of said bracket and turnable about a pivot extending vertically through said bracket portion and intersecting the pivotal axis of said bracket, with said die holder providing an opening for receiving and supporting a die, and with the central axi of said die-receiving opening passing through the intersection of the pivotal axes of said bracket and said holder, and interlocking gearing for causing pivotal movements of said holder and said bracket independently of each other, while maintaining the intersecting relation between said pivotal axes and the axis of the holder opening.

3. An adjustable mounting for wire drawing dies comprising in combination, a fixed frame providing spaced vertically extending guideways, a slide movable between said guideways, a bracket mounted on said slide and turnable about a horizontal pivot extending through the slide, with said bracket providing a portion projecting beyond and parallel to the axis Of its pivot, a die holder mounted on the projecting portion of said bracket and turnable about a pivot extending vertically through said bracket portion and intersecting the pivotal axis of said bracket, with said die holder providing an opening for receiving and supporting a die, and with the central axis of said die-receiving opening passing through the intersection of the pivotal axes of said bracket and said holder, and means for moving said slide vertically within said frame to determine the position of the die-receiving opening of said holder with respect to said frame, while maintaining the intersecting relation between the pivotal axes of said bracket and said holder.

4. An adjustable mounting for wire drawing dies comprising in combination, a fixed frame, a

with said bracket providing a portion projecting beyond and parallel to the axis of its pivot, a die holder mounted on the projecting portion of said bracket and turnable about a pivot extending vertically through said bracket portion and intersecting the pivotal axis of said bracket, with said die holder providing an opening for receiving and supporting a die, and with the central axis of said die-receiving opening passing through the intersection of the pivotal axes of said bracket and said holder, worm gears mounted on the pivots of said bracket and said holder, respeca Number tively, and worms mountedon said slide and on said bracket, respectively, in mesh with said worm gears, with turning of said worms serving to cause pivotal movements of said holder and bracket independently of each other, while maintaining' the intersecting relation between said pivotal axes and the axis of the holder opening.

5. An adjustable mounting for wire drawing dies comprising in. combination, a fixed frame providing spaced vertically extending guideways, a slide movable between said guideways, a bracket mounted on said slide and turnable about a horizontal pivot extending through the slide, with said bracket providing a portion projecting beyond and parallel to the axis of its pivot, a die holder mounted on the projecting portion of said bracket and turnable about a pivot extending vertically through said bracket portion and intersecting the pivotal axis of said bracket, with said die holder providing an opening for receiving and supporting a die, and with the central axis of said die-receiving opening passing through the intersection of the pivotal axes of said bracket and said holder, worm gears mounted on the pivots of said bracket and said holder, respectively, worms mounted on said slide and on said bracket, respectively, in mesh with said worm gears, with turning of said worms serving to cause pivotal movements of said holder and bracket independently of each other, while maintaining the intersecting relation between said pivotal axes and the Y axis of the holder opening, and means for moving said slide on said frame to determine the position of the axis of said holder opening with respect to said frame, while maintaining the pivotal adjustment of said bracket and holder, as determined by said worm gears and worms. CHARLES D. JOHNSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name 3 Date Lemont Jan. 28, 1890 Jeffery Sept. 15, 1914 Anderson Feb. 20, 1917 Woolston Feb. 11, 1919 Haddow Oct. 6, 1931 Morgan Apr. 7, 1942 Walling June 13, 1944 FOREIGN PATENTS Country Date Germany Mar. 17, 1893 Great Britain Aug. 3, 1933 Number

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