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_------------·DiESIGIN!------------- variation of load conditions for a certain Another approach to minimizing the for the design power of the unit. The same high-stiffness design. This proves again effect of a load spectrum on the emitted principles are also applied for bevel gear how stiffness is key in the design: sound is exemplified in Figure 7. By sets, as exemplified in Reference I, which • The level. of corrections needed is applying a modified tip relief geometry, discusses the measured noise behavior of a lower. Consequently, there will be which is enabled through the use of mod- given gear unit over a variety of loads. less reduction of active profile under em manufacturing equipment, the active Results low load conditions. profile gradually increases as the load Figure 7 shows sound power levels • Par a given load spectrum, the mean increases. Therefore, the noise specifications can be maintained over a wider gear units designed in line with the princi- generated by a range of standard industrial deviation from the optimal correction is much lower; range of absorbed powers rather than only ples above. The sound levels, indicating iO-'Wi 1 . I UH'AVE ER CH;O:ICE ••• Range of Applied Loads on Gear Unit Low Stiffness Design High Stiffness Design Absorbed Power IFig. 5-Reqllired tip ,reliet 8safllnction of absorbedl power. A!W Systems Co ..announces that it is now a manufacturing source of spiral gear roughing and finishing cutters and bodies. We also can manufacture new spiral cutter bodies in diameters of 5" through 12" at present. A!W can also supply roughing and finishing cutters, hardware and replacement parts lor most 5"-12" diameter bodies. I Whether iI's service or manufacturing, consider us as an alternative source for replacement. parts and hardware as well as bodies and cutters. You'll be in for a pleasant surprise. Royal Oak, Michigan 48067 NEW! Straight IBevel Cutters. Tel: (248) 544-3852.· Fax: (248) 544-3922 S~EEUS AT GEAR IEXPO BOOTH #424 22 GEAR TECHNOLOGY CIRCLE 111 fig. &-Modified tip, relief geometry. - .k:::::: ... E 85 ., ~I rl 1
• ••• _IDESIGN _ maximumraiher than average value. are derived from a number of experiments on a variety of tandard gear units, both parallel and right-angle, ill a load range between 10 and 7.50k W. w'ilhollt special modifications. The test were carried 0\111 on inhouse test benches, by mean of intensity analyis.Thc horizorual axis on Figure 7 shows the ab orbed power; the vertical axis how the corre pending sound pre - UTe Ievel, Conclusion Low noise behavior in standard indu - triel gear units is becoming an important selection criterion for the customer, even in businesses Ihat used to be considered "heavy industry." In addition. the accepted noise levels ihemselve are conrinuou ly decreasing. State-of-the-art machinery for manufacturing both bou ings and gear Wlowsthe designer to meet and even to exceed ell tomer expectation . This preume • however. that a number of careful and con i lent. d ign deei ions are made from tile very concept phase. The "De. ign for silence" !>1r'Utegyhas been exemplified by describing this series of deei ion as embedded ina range of standard indu trial gear units. Re ult how the appma h to be ueee ful.O REFEJUo:NCES I. eyrinclt. Eric and Roland Bwdry. a...unJ ~'I!! g~Q": ,Iislifff;lll'e "-'"efits /"r die lISer vI !ndl!.Slrial gMr ,1ri,-r$. 301 World Coegress 00 Gearinll and Power Transmission. I'ebruwy. 1,992. - 2. Boudry, Roland, Kegellalldf1(H1kslijpmJ1chin~ WIENER typ;! W/II'Xl CNCSKN. Ik Techni~he Weerplm. 1989. J. 'Boodfy. Riollfid. Mesurr £Iwlf}l!lqru! Ik L'ern'ur Cillll'ItJI[qIlt'. Tedmi~ &t Mana.gt:ment. Jl!!I.my. 1990. 4. De Wacl:IItt. Louis and Leo J:msscn ..ilCOlLfri /Ilmuily MrflSUrrmnlU in Aid of the lksign of Gear CM/Itgr for Millilllal Noj~e Radialion. Second World Coo~ on Gc.umg. March, 1986. 5. VOl 2159. EmJ.Hi'JI1:skt-nll"'rl1r !~chJ"!J"sc:hcr Sclutlqu~llrn. Gelrieilegetall.\cl1e. Scp!eml!et. 1983. 6.. Unilcd SI8I~ palEDl umber S68Il793. Polyc'rystalUiine Dliamlondl Dressii1:g Discs l Precision Products Manufactured in the U.S.A. • Sharp Included Angles (20 0 Min). • Sharp Radii (0.11rn/rn- .004" Min). • Can be relapped mulltiple times. • Better surface finish than Natural Diamond. • We also offer Dressing Discs in Natural Diamond. CiUPlper 'D:iamondloo,1 CO'. 47-16 Auslell Place Long Island City, New York 111101 Phone: (718) 39.2-36711 / Fax: (718) 392·4124 E-Mail: clipdial.ol@aol.com CIRCl.E 188 N10w You Can M'eet 1509001 Gear lnspeetlen IDe'mands With A Siimpl'e Mouse Click Yes. it'~thai elLS~to gel accept/reject test resull5lolS0. AGMA ami [)J standards ~lh Mnhr'~ new DF!. I\HOseries double flank gear roll testers, Easy·to·use, WlIIdows '!l54:OInpallblc WtnGcw-" lest and evaluation software leu you determine Total Ccmposne, ToodHo-Tooth and Radial Runout errors with a single mouse dick. There' much mort. of course, in ludin Mahr's ficld·pro,·en modular mechanical d ign mil, on the model R9fi, a highly sensnive leaf pring tranmti ion ...hich Jlo"'" measuring Force adjustments ILO 0 ounces -an especially critical feature for testing plastic ami powdered metaiscan. For FREE FA,crs, conlad tke MaA, gear rMflIfl1mMU .,pedt11islJ.~ 1,8(XH6H33 1.Fax: 5131489·2020. T.II Us WIlli You ThiIIk ... If you found this article of interest and/or useful, please Circle _ For more information about H...... TralllllliaiOlll, eire Ie 201. ~ The Measure of Your Quality Ma:br Corporation 11435 WLl!iamllOURoad· Cincinnati, OH 4.5241 .•Phone: I SQO.96g.1331 • Fall: 513/489'2020 Gtt I.,Ga, W"rlA Mdr:l M~ ,.,..,.... Ftul#r,.proMl. MNi-1u1d t.'"' ........ orln,( 1!IOb' PC "'~I,.OnJ.lkwhltj/;LJoJ. roll ttsJm· eNC 1114l,lial".., Ifllll fonn ImLTT' SurfiJ"fin!1b f
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 and 22: ____ DESIGN _ • The standardized
Page 23: The Ri,........-.·- tGears tNow Wh
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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