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---------------------------------------------------------------------------- _____________ DESIGN _ being impo sible,liIe designer has a torquein order to obtain the lowest 'ul1ique opportunity 10 optimize gear para- cost for a give torque rating. meters such as module, face wi:dth, helix '.' The high-speed gear set, being the angle or contact ratio in different way in order to meet di:fferent market needs. Indeed, the market needs for respectively hjgb-speed. lind low-speed gear sets differ as foilows: The low-speed gear set,being .tI1e largest gear set and therefore Ihe highest cost factor in the gear uait, h to be de igned for maximum largest source of vibration and noi e, needs to be optimized for lowest noise generation, because: For a given transmission error, the higher the rotational speed, the higher the generated vibrations. The human ear is less sensitive to 'lief)' low frequencies, as reflected in the 'A' weighted spectrum. The most disturbing frequencies ~ypically result from the mesb frequencies and harmonies of !he higher speed gear se . The same appJiiesa fortiori to 'bevel gear sets. These are always the high-speed gear sets in right angle gear urtits, and apart from thebeneficial effect of being ground (Ref. I), they also need to be optimized concerning law noise generation. Mi£1:Qgeometry.: ,the fourth te~'el. State-of-the-art gears are corrected for deflections by profile and lead moditicalions. Sophisticated grindinglechoiques allow for the implementation of correction , such as those calculated by Tooth Contact Analysis (TCA) software dcve.loped by Gleason OF Ihe Research Institute WZL-RWTH Aachen, However, as deflections are proportional with load, 'the applied. medificationsare optimal only for a given ~oadsimatien. Consider '!he sU'aiglitt tip relief correction as an example (Figure 4). Thi scorreclion is the amount one has to take away from the mating gear tip in order to avoid interference with the driving pinion due to deformation underload. The applied tip relief. however, is optimal for one load imanon only, For other loads. the tip relief will be sub-optimal, resulting either in reduction of active profile or in tip interference. Many gear units, however, are subject to a variety of loads. Figure 5 shows the amount of tip relief needed versus ag;iveo lill Relief maglne a High Precision" Swift Gear-Imlng machine IIIl1d III flllI-seale CM I lin one. One that: Can do-it-aU In a single sB"llP,savlngHme ,amd,e:llmlnOlessecondary operoffons .• Run cllcles around you, goo,. • IEosily measures, alilearures on your gear, Including profile, lead and Index, plus !keyways, :spfines, boll circles a-nd more. '. 'Does not requlra manual centerlngl of your gear. • Does nat use a rotolYtobls' &: heliJh! gage IrpparCllus. • llti uzes reliable Renlshaw TIP PH-IO, SP·600MI ScanlllngllPrabe ,S! slngle·lleam Iloser systems.• Exclusively uses 01' bearings, gran ne olld ceramics. • Uses a CVllndrlcallrange, of 1000 x 600mm and een load up '104,OOOlbs.. without warping. (Don't ny mls on a 'rotary laDle.) • Uses precision, reund granite base as an occurate guide. • OIlers slOla-of-an, Icon dlivell menu, slmplllla, use, gea. measuremenlsoftWa,e .• ' andis, reliable am:! cost-el'lecfive. RADIANCE delivers alii tills and much more. :SEEUS ,AT GEAR EXPO BOOTH f832 :201 GE ... R TECfiNOlOGY Contae! lSI! lJ!l,IIca, Adv!!!1i:ed1MetrologyDI,. Tel: ,1100'.2"7.'1875 • f'Q~: 873.801.11158 _.m·m'tRllogy.cam, 1I00lh 1132 CIAClE131 Theor,eticallnvolute Fig.ct-Straight lip,reUar.
The Ri,........-.·- tGears tNow When you or your customers answer: Our ability to say "yes" has distinguished need gears fast, you can't take "no" for an Fairfield as one of the, best and most trusted manufacturers of high quality 'gearing in the world . .And our in-house heat treat capability keeps us in complete oontrol of all our production processes. So you always get the highest quality gears and gear assemblies you need when you need them. The right gears, right now. Get Better Results Fast No other gear company responds faster or better than Fairfield. So call us now. Or, for the fastest possible response, email your inquiry to us at rightgearsrightnow@fairfieldmfg.'oom. We guarantee a reply to your inquiry within three working days. FAIRFIELD GEARED FOR EXCELLE,NCE Send email in '. ri9htgearsrighlnow@f ~~~ to: al. """"'ITg.com Vlsh our websll8 at www.lalrfIeIcImfg>oom C 1999 Fairfield Manufactumg ~,Inc. For more information. contact: Fairfield Manufacturingl Company" Inc. Lafayette, IN 47903-7940 USA Telephone ,(765) 474-3474, FAX (765) 474-2153 SEE us AT GEAR, EXPO BOOTH #526 CIRCLE 1:(11
Page 3 and 4: ISpur and helical gear production b
Page 5 and 6: SEPTEMBER/OCTOBER 19:99 SPECIAL SEC
Page 7 and 8: mRClIE 114
Page 9 and 10: • 1PUBUSHER'S PAG,E Timivt9 • I
Page 11 and 12: Representing KAPP, NILES and KAPP T
Page 13 and 14: • -_ REVO'lU1110NS 11 Gear Drives
Page 15 and 16: YOU' ID'ON'T HAVE TO' PAY THE HIGHE
Page 17 and 18: 'Quieter Gears. Ellgineered Meta'.s
Page 19 and 20: _____________ IIDESIGN -. New Desig
Page 21: ____ DESIGN _ • The standardized
Page 25 and 26: • ••• _IDESIGN _ maximumrai
Page 27 and 28: ••• _.IECH:NICAIL CALENDAIR _
Page 29 and 30: ____________ :S'HOWCOVERAGE.-.-.-.-
Page 31 and 32: _-----------SHOWCOV:ERAGE----------
Page 33 and 34: :SlOlutlions • • • T h 81 S i
Page 35 and 36: POiwer Integrated POP-UP1M ILift/Ro
Page 37 and 38: _____ SHOW COVERAGE _ wet and dry i
Page 40 and 41: ____ SHOW 'COVERAGE _ With over 10
Page 42 and 43: ____ SHOW ,COVERAGE _ Also, they wi
Page 44 and 45: SPIIIRAL BIEVEL GEARS, Spiral & :St
Page 46: See us at 'Gear Ex:pol !'99 Booth N
Page 49 and 50: damping propertie of the meta]. Thi
Page 51 and 52: tile ba e of a refractory lined cru
Page 53 and 54: Gear Grinding With Dislh Wlhileel:s
Page 55 and 56: 1 ,Abour,GCTS ______ ---- OEAR.GRIN
Page 57 and 58: _____________ IIGEARIGRINDIINGII
Page 59 and 60: ____ •• _INDUSTIRY NEW.S,••
Page 61 and 62: ------------------ -- - - ---- Powd
Page 63 and 64: _____________ IIPOWDER,METAUJURGV
Page 65 and 66: used in aerospace applications incl
Page 67 and 68: ________ -- __ IO.&A. _ Calculating
Page 69 and 70: ______ O&AI __ - __ We will al 0 ne
Page 71 and 72: Sell your Gear Products on I ...--_
Page 73 and 74:
---------- PRODUCT INIEWSI ••
Page 75 and 76:
- - - ---- ----- -- IPRODUCTNEWS ~
Page 77 and 78:
SEE US AT IGEAR IEXPO BOOTH 1134 CI
Page 79 and 80:
LITERATU:RE MART - ---- --- ---, -.
Page 81 and 82:
-- -- SERVICE - - • A Proud Past
Page 83:
Perry Technology Corpor,atio~ .. P.
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