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The Journal of Gear Man'ufacturing JANUARY IFEBRUARY 1985 'Guess Who Builds .Ore' Mu'i-Axl's-I • • CNCI Ho! Bing .Achines F'orl A'ui ',O.Oiive-Size Gears?

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The Journal of Gear Man'ufacturing JANUARY IFEBRUARY 1985 'Guess Who Builds .Ore' Mu'i-Axl's-I • • CNCI Ho! Bing .Achines F'orl A'ui ',O.Oiive-Size Gears? The Journal of Gear Man'ufacturing JANUARY IFEBRUARY 1985 'Guess who builds .ore' mU'I-axl'S-I • • CNCI ho! bing .achines f'orl a'UI ',o.oIive-size gears? Americanl Plauter. of co rse'. - For example, our new PE150 represents the best Faster 1001change is accomplished with the quick of high production capability plus flexibility for hob change system which saves more than 90% of habbing gears up to 6-in. Because of hig'h dynamic tool changing time while assuring hob concentridty rigidity, it's capable of using the latest in TiN and ilndependent of operator skill. A tool magazine with carbide tool technology. Setup times are reduced automatic changer is also available. as much as 85% because change gears and Shorter machining times. Shorter changeover mechanical gear trains have been replaced with times. Faster tool change. Reduced idle times. trouble-free electronic controls. Lower operating costs. All at a price no higher than Simple CNC operation is assured with a variety of conventional hobbing machines. For additional, available software. Dialogue programming covers information, contact American P1auter Ltd., 925 all operational sequences, walks the operator East Estes Avenue, Elk Grove Village, IL 60007 through data entry and alerts him to conflicting U.S.A. (312-640-7500). or illogical data . .A diaqnostic program simplifies maintenance procedures by detecting and displaying errors dilmctly on the CRT. ~ t(\J]fi]~ ~tn-Q] Flexible automation is a reality with the PE150's ~ OJ][Jffi[Ji]]]) integral workhandling system which combines unsurpassed speed' and versatility-,even where World-class gearmaking technology In hobblng medium or small production lots dictate frequent • grinding· shaping· hard gear flnlshlngl • retooling during one shift. ilnspectlon • gear ,cells and systems CIRCLE A-l ON READE,RREPLYCARD ---- --- I . ~-~.-'-""""~'" .~,,- ~ --..' - -- - - -- ~''''''''-~----'''''''''''''''''' - LeHen for this columnlshould be ad'dressed to Let· DUring a recent business trip to our Rockford. Illinois ten lathe Editor, GEARTECHNO~OGY..P.O'.Box headquarters to discuss Gear Manufactunng and Design 1,426, Elk Grave Village, IL 60007. Letters sub- Problems, I had an opportunity to scan your magazine mitted to this column ,became the prope,rty IOf and was very much impressed. GEAR TECHNOL:OGY.Names will be w.lthheld Here In our Denver, Colorado facility. we are the upon request; how vel', no anonymous I'etten primary manufacturing source for most of the individual will be published. 'OpinIons eXPlJlessd by con- parts that are used in the Aerospace products that Sund- tr,lbutors are not necessarily those 0' the editor strand supplies to customers worldwide. These products or publishing stall. include electrical generating units. commonly known as Constand Speed Drives, auxiliary power units, wing Dear Edlto,rl actuators, rudder speed brakes for Space shuttle, and the Your new Journal IS a most attractive. informative pub- list goes on and on, All of these products use gears, and lication. I'm certam that you and' the rest of the GEAR almost all of our gears are precision ground. Suffice it [0 TECHNOLOGY publication staff labored long and hard to say, we In Denver, are very much involved in Gears, produce such, an excellent professionally-rendered product. Peter F. Palko, Section Mgr. Your journal is also unique; there is none other like it Sundstrand Aviation Operations in print. It appears that you have set out to serve an important previously neglected area of technology, This action is commendable. and will be a definite service to Your magazine GEAR TECHNOLOGY IS a tImely asset gear designers, manufacturers, and users, to me. We are just starting to hob our own gears in Please accept my congratulations on this new house. We have little actual gear cutting experience and endeavor any information we can get our hands on is a great help. Ken G. Merkel. Ph.D .. Editor Keep up the fine articles espeCially the "Back [0 Basics" The Journal of Engineering Technology Series. Alan R. Ayotee Process Engineer The first two issues of your very fine journal deal ex- I would like to compliment you on your Joumal. There tensively with baSICS.I have found the ordinary gear-man has been a need for a publication of this kind for a long other than an engineer does not comprehend what is time, I have passed the number on to my colleague con- SImple to the engineer. cerned with the CAD of Gears, and , am sure he will The "Gear Ratio" article Isecond issue) was particulary greatly appreciate the publication. interesting: I have made a program for that but had thought it was impossible for the computer to find the Professor S, A, Tobias factors. Now I know how to achieve the "impossible", University of Birmingham, England Thank you for that. Best of success with your ambitious endeavor, Robert P. Ellenberger, Engr. As a Manager of Special PrOjects leading company Federal Gear, Inc. development in certain areas including non srand.3rd gearing. I have found your Gear Technology Journal VoL I NO.3 to be an excellent reference source. In our country. the lack of reference sources and I would like to receive it regularly. results-of-research Information make keeping up to date in Also, if possible. I would like to receive Vol. 1, No. 1 our job an extremely difficult enterprise. This publication and Vol. l. NO.2. will fill a sorely needed gap. Valentin G. Barba Alexander H, Danon G. Special Projects Manager General Manager Plessey Dynamics Corp. Pedro Meusnier Juarez. MexiCO Editors note: ThISletter is typical of many that we have been tecevmq. Because of the extra time and expense In- volved' in sending individual back issues: we must advise Your Oct.JNov. issue arnde on Austempered Ductile thai there is a charge for back issues, S 7,00 for the Iron by Dale Breen was reviewed with great Interest. We Umted States, S 15.00 for Foreign Subscribers. There is are currently involved in a test program with one of our also only a limited number of these issues available, If customers on gears made from this material. The conte-u you Wish to purchase any back issue. msuyou: check of the artide was quite helpful. Keep up the good work. and indicate the issue you are requesting to: GEAR TECHNOLOGY B. A. Schaler P.D. Bo» 1426 Allrson G.3S Turbine Opera£lOns Elk Grove Village. IL 60001. Jclnucry/februcry 1985 1 ANALYZ,ING ,GEAR TOOTH AS A FUNCTION OF , TOOTH ,CON-rACT ,PATTERN' SHAP,E AND POSITION Lowell Wdcox-Gleason Works ,COMPUTER' A1D,ED' DESIGN ICAD~ OF FORGING AND 16 EXTRUSION' DIES: FOR IIHE PRODUCTION 'OF GEARS IB,YFORMJNG David Kuhlmann. P.5. Raghupathl-BatteIJ 's COlumbus Division. Gal)' Horvat-Eaton CorporatIOn. and Donald Ostberg-U.S. Army Tank Automonve Command THE EFFECT OF LUBRfCA_NT TRACTI'ON ON WORMGEAR' EFFJCJ~NCY W. R. Murphy. V. M. Cheng. A. Jackson. J. Plumen. M. Rochette-Mobil Research & Development Corporation HIGH POWER TRANSMISSION' WITH CASE-HARDENED GEARS AND INTERNAl. POWER IBRA'NCHING, J. Thelssen-A Friedr. Flender GmbH u. Co. KG VIEW-,pCINT NOTES IF,ROM THE EDITOR'S, D,ESK 5 GUES:r IEDITORIAL. BY DON McVITl'iIE 7 ,BJKKTO BASICS ,... DEFINlT,fQNSOF GEAR 42 EL~M~NTS-,FELLOWS CORPOR'AJIION CLASSIFIED January/February 1985 Vol. 2. No. I SUBSORtPTION liN FORMATION; GEAR TECHNOLOGY I~ dtSUltMed free at charge [0 qualified Indlvl(ll.l Is and /Irmi In ttle gear manulacrunng InduSlJ'y To conllnU!! recelVJ/19your subiCflpllOI'1. (om~ and rna"!tIe apploGlII()n card fOlJTld elsewhere In !hIS magazme Paid subscnpllon rates In the US are S5 00 pef ISlOe ... 5 I 75 lor poiIagt> &. handling or S30 00 per year. 5bO 00 per year, Me.xICo and Canada', S10 00 per ~ar all OItler rOft'lQrl countne's Sub!C!'IJXlOf1 requests [0 RII,ND ....LL PUBLISHING CO. INC. PO ,BOX 1426 Elk Grove. IL 60007 MANUSCRIPTS: We are requesung technICal papers 01 every sort from manufactured 01 gear makIng maChinery and rel.Red equipment. unlvers![!es. and eng neers .....rtlCles ~ould be at an ea-ucal1onal and 'train 119 nature w~h general ap- peal to anyone hailing ,anything to do With tne purchase 01 malenals or machinery. or 'the deSigl1 m nulaaurt. lestlng Of prOCesSing 01 gears SubjfftS sought are soiUloOl1S10 specifIC problems. e~planallOl1s at new t«hnolog)!. technques. de.5lgni. processes. and alternative' manulacn.mng melhods These can range from ttle "How 10 .. 01 ~ar CUftlng tBACJ( TO .BA5JCSj to the most advanced technology ....Ii manuscllpr5 submlrred W111be carefully Con~led How~. the F'l.Jbltsher assumes no responSibility fOI the salely or return at manuscnpu Manu5Cl'lpls fIlIJ~ be accompi!n~ by a selr·adClressed. self-stamped envelope. and be sen! to GE....R TECHNOLOGY. The Joumal at Gear Manulac:lurrng. PO Box 1426. Elk Grove. IL 60007 GEAR TECHNO~CX;Y JISSN 074H>llS81 15pUblished bimonthly as .' r.re.. ncr source 01 ~hl'lOloql< I O!"velopm!'''l' In l~ 90" IndUstry I[ _'come51nd~p!l'ndi!n[ "",,,'on. bu[ I~ qplnoons ~.presse<l by llI[l1Orsand conlntJUlOO10 GEI'.R rECHNO~OGY .r~ not ~~naray tho'" 01 the ~1!OI or ,J)Ub/'!I1rnq starr and we assulll(' no [l!sporllObllfty101the v IdlIy 01 cl.JomsonCOtlrll!(oorowllh ~! pmtM ClConrenLI capyol9h!ed by i!AND"'L~ PUBtl5I-iiNG CO INC 1'l!!4 Arr.IClts~i<II1g onGEAR TECHNOLOGY m.ty not bt rtp'CldU(~ onwhole Of '" part Wllfiou[ me express pe1I'TO'SS!OfI 01 me publ!sl~' 0<' me ~ SKond ~ ~ ~ lor ill ChC:. ... POSTIlllAST£R i!!no:I _~ (orrKIJDIlS 10 GEAR teCHNOLOGy P 0 Bo. 1426. U, Grove II. 60007 NOW you can assure non Quality before cutting your first gear Bad hobs cut bad gears.
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