DCJ Bulletin No. 111-D

@]):::<HOGUE

forColdHeading

D

Straight Line DrawingExact Wire Tolerances

Lower Material Costs

Longer Die Life

Improved Finished Product

C)

CJ

HOGUE

No.7 Ajax-HogueWire Drawerattached to a1" boltmaker.(Topguardsremoved)

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~L~~WlRIDRAWIRS

forusewithColdHeaders

Standard Accessories

0 Breaker Bolts are furnished on all Ajax-Hogue Wire Drawers that have a two-piecedrawing arm.

0 Sprockets, Roller Chain and Chain Guardare included for connecting the drivingmechanism to the Boltmaker or PartsFormer crankshaft.

0 All drawers size 4 and larger haveelectric controls for all grip functions.

0 All openings in the Wire Drawer areguarded. Safety switches are interlocked toappropriate hinged doors.

0 All Ajax-Hogue Wire Drawers feature afully automatic lubrication system.

0 A Feed Assist Air Cylinder is sometimesfurnished on longstroke wire drawers.These cylinders assist the header feed rollsby pushing the die box and straightenerrolls during the feed cycle.

0 A sample set of tooling is included withthe Wire Drawer but does not include thedrawing die.

0 One gallon bucket of Murphy's X-32drawing compound is furnished separately.

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Type1/ BasicDrawerwilhonllnching

Type2/ BasicDrawerwilhInchingfingers

SIZES 0,1,2,3 and 4 SIZES 1, 2 and 3

Basic Operation of the Type 1 AJAX-Hogue Wire Drawer as illustrated byFigure 1 shows an Automatic Grip Box(A) which grips the wire, a Die Box (B)which contains the wire drawing die andlubricant, and Drawing Arm (F) whichpushes the die box back over the rod. Inorder to start a new coil, the end of thecoil must be prepointed or swaged toslightly less than die size so that it ispossible to feed the rod end by handthrough the drawing die and through theautomatic grip box. The header is thenjogged and the die box advancedmanually until the lead end of the coilreaches the header feed rolls. (This isdone to keep swage length to a mini-mum.) The feed rolls of the header thenpull the wire and die box combinationforward. As the header continues to run,the Automatic Grip Box (A) holds thewire stationary while the die is pushedback over the rod by the DrawingArm (F).

In most cases the AJAX-Hogue WireDrawer is driven by a sprocket and chaindrive from the crankshaft of the headerto an adjustable eccentric. The adjust-able eccentric controls the stroke of thedrawing arm which is set to draw slightlymore wire than is required by the headerto insure sufficient stock for the cutoffblank.

Figure 2 shows the basic drawer withthe addition of an inching mechanism.When an inching mechanism is used thestarting end of a new coil does not haveto be swaged or pre-pointed, nor arewelded coils required. This method isnormally used in the smaller wiredrawers and features the use of inchingfeed and grip slides with inching fingers.The rod end is pushed by hand into thedrawer until it is gripped by the InchingGrip Slide (D). The Inching Feed Slide (E)is operated by the Inching Lever Arm (G)from the Drawing Arm (F) which ad-vances the rod in predetermined lengthfeeds. The Inching Grip Slide (D) is posi-tioned as close as possible to the die boxto prevent "buckling" of the rod as it isinched through the die. The fingers inthe inching grip slide prevent the rodfrom backing up as the die is pushedover the rod by the header operator jog-ging the machine. The inching feed slideadvances the rod and die box while thedrawing arm is returning for severalstrokes until the extruded end haspassed through the Grip Blocks (A). Atthis time the Inching Grip Slide (D) canbe disengaged and the inching processcontinued until the wire passes throughthe feed rolls mounted at the front ofthe header. The header feed rolls are en-gaged and the Inching Feed Slide (E) isdisengaged. The wire drawer is now setfor continuous production. Note: Roddiameters below %" or area reductionsbeyond 18 % cannot be inched with thismechanism.

Type3/ LargerDrawerswithInchingSIZES 4, 5, 6, 7 and 8

Figure 3 illustrates the basic drawer with rod straightening rolls(s)and Power Starting Rolls (I) from the header mounted on the pad ofthe wire drawer. This style of wire drawer is used mainly to draw thelarger rod sizes and features the use of an Inching Grip Box (C) withinching wedge grip blocks along with the rod straightening rolls andpower starting rolls from the header. In this operation the PowerStarting Rolls (I) are used to feed the rod end through the RodStraightening Rolls (H) and through the Inching Grip Box (C) to theDie Box (B) where push pointing is accomplished by means of jog-ging the machine and use of the power starting rolls. The wire isinched until the end passes through the Automatic Grip Box (A) atwhich point the Inching Grip Box (C) is released. With grip trans-ferred to the Automatic Grip Box (A) buckling is no longer a problemand longer strokes can be used in advancing the end through to theheader feed rolls. The power starting rolls can now be disengagedand the unit is set for normal drawing.

Optional Equipment at extra cost

INCHING FEED ROLLS:Ajax-Hogue Wire Drawers can also be furnished with our own AjaxPower Inching Feed Rolls. These rolls operate intermittently with thedrawer in feeding the rod through the inching grip box and are timed tofacilitate push pointing. They are normally employed when drawing rodabove 3j," diameter.

RODSTRAIGHTENING ROLLS:For rod larger than y," diameter, NO.3 Ajax-Hogue Wire Drawers maybe equipped with inching wedge grip blocks and rod straightener rolls.These straightener rolls are designed to straighten the rod to allow it topass through the inching wedge grip blocks without binding. They arestandard equipment on NO.4 Wire Drawers and larger.

Type4/ LargerDrawerswith InchingFeedSIZES 4, 5, 6, 7 and 8

Type 4 is the same as Type 3 with theaddition of an Inching Feed Slide (E)and an Inching Lever Arm (G) shown inFigure 4. The function of the InchingFeed Slide (E) is the same as the Type 2drawer.

The advantage of the Type 4 drawerover the Type 3 is that it eliminates thepossibility that the operator will feed uptoo much stock and cause a bucklewhen inching because the inching feedslide determines the feed increment.

SOUND ENCLOSURE:Ajax-Hogue Wire Drawers that are attached to Headers with soundenclosures can be similarly equipped so that the combined machineswill attain the desired Db "AU rating.

OPTIONAL LUBRICATION SYSTEM:A Trabon or similar progressive type lubrication system can be sup-plied in place of the standard oil-injector type system.

LIGHTING INSIDE GUARD:A light can be added inside the top safety guard as an aid whenstartinga new coil.

TOOLING:Additional tooling can be ordered to supplement the set that comeswith the drawer. It is advisable to tool the drawer with the largest sizethat you intend to run to minimize the amount of extra tooling that willhave to be purchased.

DRAW DIES:Tungsten carbide drawing dies do not come with the standard set oftools but can be purchased from Ajax or directly from severalmanufacturers.

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AdvantagesinUse

5

Topviewofworking components

1/WireEntersHeaderStraight

Wire drawn through the Ajax-Hogue WireDrawer is not coiled after drawing; it entersthe header straight, without requiring anintermediate roll straightener.

4/ UniformlyAccurateSizeonSuccessiveCoils

2/ NoAdditionalLaboror Handling

Since successive coils are drawn throughthe same die, there is no variation indiameter from coil to coil as with com-mercial wire. The drawing dies of tungstencarbide remain true to size for many tonsof products.

Coiled rod is brought directly to theheading department, and started throughthe Ajax-Hogue Wire Drawer and into theheader almost as easily as wire is starteddirectly into the header - hence no addi-tionallabor is required. Also, storage ofcold-drawn material is eliminated.

5/ In-HouseControlofWireSize

Because you are drawing at the header,the wire size can be varied slightly bychanging or altering the drawing die andyou are not stuck with huge quantities ofpre-drawn material.3/ReducesCost

ofMaterial H/ Perfect,CleanCoatingAs wire drawn by the Ajax-Hogue machineenters the header immediately after draw-ing, it is warm, clean and perfectly coatedwith no chance to pick up scratches orscuffs from foreign matter, or to deterio-rate in transit or in storage. Furthermore,by varying the lubricating compound, thecoating can be adjusted to suit the job.

The Ajax-Hogue Wire Drawer makes itpossible to produce highest quality coldheaded products from hot-rolled rod in-stead of cold-drawn wire - saving thedifferential in price between the twomaterials. In many cases this differencealone is enough to justify purchasing anAjax-Hogue Wire Drawer.

No.2 Ajax-Hogue Wire DrawerCapacitiesLow

Usual Carbon StandardWire Alloy Steel- DieSlide

Drawer Bolt Normal BoreforSizes Steels Drafting DrawingDie

No.O 'I;' %," 2" dia.NO.1 'I." '/,." 2" dia.No.2 '/," 9/,." 3" dia.NO.3 s;." "/,." 3" dia.No.4 3// 13/,." 4" dia.NO.5 1" 1'/,." 4" dia.NO.6 1'// 15/,." 6" dia.No.7 1'/," 19/,." 6" dia.NO.8 2" 2'1." 7" dia.

Inching mechanism withautomatic lockoutstandard on large

wire drawers.

7I HeadsEasierHeading immediately after cold-drawing,while the wire has its lowest yield point,results in much easier heading and lowerpressures in the heading dies. There isalso less tendency for split or crackedheads.

HIIncreasesDieLifeThe easier heading, the clean coating andthe uniformity in size and straightness ofHogue-drawn wire, all contribute togreatly increase the life of heading dies-amounting to as much as 3 times the lifeor more on some difficult, close-toleranceproducts.

B I No Additional

PowerRequiredThe Ajax-Hogue Wire Drawer normallyoperates through a sprocket and chainfrom the header. It does not increase

header motor peak demand, and requiresonly a little more power than necessaryfor operating the header. Usually theexisting header motor is sufficient.

No.5 Ajax-HogueWire Drawer

101ImprovesProductQuality

TENSILE STRENGTH TESTS.

The foregoing factors all combine to pro-duce sharply filled out heads and corners.This feature is particularly desirable in thecold heading of hex nuts and parts formerproducts. Ajax-Hogue Wire Drawers sub-stantially improve the quality of all cold-headed products.

"One of the most puzzling things in this prob-lem is presented by the phenomenon known as"age.hardening:' Most people know that if afreshly drawn wire tests low in tensile, it can beheld over for a few days or weeks and then willtest higher. This aging goes on in all cold drawnmaterials. I have before me records of testsmade by Dr. Brown of Glasgow University. Atypical record is that made by a soft basic steeldrawn 42% on one draft. The tensile tests runas follows:

11I SynchronizedOperation

The Ajax-Hogue Wire Drawer is mechan-ically driven by the header and operatesas part of it. After initial timing at installa-tion, no further adjustment is necessary.

Lbs. persq. inch84,50087,00092,00092,20096,000

1 hour after drawing1 day after drawing7 days after drawing

26 days after drawing188 days after drawing

Summary of TestIn first 24 hours wire gainedIn next 7 days wire gainedIn last 162 days wire gained

TOTAL GAIN

2,5005,0003,800

11,300

IN SHORT,AJAKGIVESYOU...

It is definitely established that wire has a can.siderably lower yield paint immediately afterdrawing. Actual experience in cold-headingHogue-drawn wire only a few seconds afterdrawing. indicates that it heads more easilyand the metal flows more freely, filling out theimpressions better and resulting in consider.ably longer die life.

Clean, straight, accurate blanks,reduced material costs, less han-dling and reduced inventory.Plus increased die life and over-allimproved product quality.

*Extract from article by Kenneth B. Lewisappearing in an issue of "Wire and Wire Products."

Useful Information and Trouble Shooting

Tensile Tests on %" - 24 x 1%" SAE Cap ScrewsRod diameter in inches - Nominal

Actual

Drawn Size - InchesDraft in inches

Percent reduction in area

Tensile of Rod - Ibs per sq. inch

24 hours after workingTensile of drawn wire p.s.1.Tensile of finished screws p.s.i.

48 hours after workingTensile of drawn wire p.s.i.Tensile of finished screws p.s.i.

240 hours after workingTensile of drawn wire p.s.i.Tensile of finished screws p.s.i.

7Printed," U.S.A

25/64 13/32 7/16.388 .409 .435.364 .364 .364 0.024 .045 .071 Material- .14-.20Carbon Hot Rolled,

Unnormalized, Pickled and Limed Rod12% 20.9% 30% drawn on Ajax-Hogue Wire Drawer76,000 73,900 76,600

91,500 98,000 107,800107,900 111,400 117,900 0

109,300 All physical and chemical determina-92,000 98,700 tions performed by The Frank109,500 112,500 120,300 Crobaugh Co., Division of Herron

Testing Labs, Inc., Cleveland, Ohio.97,900 104,600 111,500

116,100 118,400 125,100