AGMA-94FTM11-1994.pdf
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1、S T D - A G M A 74FTMLL-ENGL 1774 W b87575 U4b3b 77b I I by: Yoshiki Kawasaki Isuzu Motors, Japan x 94FTMll Development of Transfer Gear Noise of 4x4 Transmission for Recreational Vehicles TECHNICAL PAPER COPYRIGHT American Gear Manufacturers Association, Inc. Licensed by Information Handling Servic
2、es COPYRIGHT American Gear Manufacturers Association, Inc. Licensed by Information Handling Services Development of Transfer Gear Noise of 4x4 Transmission for Recreational Vehicles Yoshiki Kawasaki, Isuzu Motors, Japan Fe statements and opinions contained herein are those of the author and should n
3、ot be construed as an officiai action or opinion of the Amezican Gear Manufacairers Associon1 ABSTRACT: in our Component Plant, we has been producing about 120, MUA 4 x4 transmission per year for our recreational vehicles since 1987. Transfer gear noise of MUA 4 x4 units have been one of the most se
4、verest customers claims, especially in the end of 1991. We have developed new methods t o duce transfer gear noise, which consisi of gear development making use of tooth contact patterns, a new regrinding syskm for shaving cutters, quality conml by the Gear Laboratory Group, improvement activities f
5、or gear production processes and s o on. By these developments extending for one year, we have succeeded in reducing the reject rate f r o m 4.5% to OS%, moreover improving the transfer gear noise rating f r o m 4.0 - 6.0 to 8.0 - 10.0 by GM rating (table 1) in 1993. Copyright Q 1994 AmericanGearMan
6、Association 1500 King Street, Suite 201 Alexandria. Virginia 22314 October, 1994 ISBN. 1-555894464 COPYRIGHT American Gear Manufacturers Association, Inc. Licensed by Information Handling Services COPYRIGHT American Gear Manufacturers Association, Inc. Licensed by Information Handling Services c STD
7、-AGMA 74FTMLL-ENGL 1794 b87575 0004b38 747 DEVELOPMENT OF TRANSFER GEAR NOISE OF A 4 x 4 TRANSMISSION FOR ECREATiONAL VEHICLES ISUZU MOTOIZS LIMITED, COMPONENT PiANT GEAR LABORATORY GROUP MGR Y . Kawasaki ASSIST. MGR k Hayaahi COMPONENT PIANT GEN. MGR T. Nishioka MANAGING DIRECTOR M. Shinoda (ISUZV
8、Motai, iimited, 8 tauchidana Fyisawa-Shi, Eanagawa-ken Japan 8 252) 1. INTRODUCTION MUA 4 x 4 transmisaiona have been ptwfuced since 1987. Annual production volume of the transmisaions vaneci fran 100, to 1 2 0 , w ao that aocumulated products have be- come 700,000 approximately. The part of the tra
9、nsfer gear box i s aimoet the eame for both of the automatic transmissions and manual ames Concerning four wheel drive automobies, customers tend to complain about transfer gear noise in four wheel dricring. Geer nase in two wheel driving is not w aiticai for the customera Incidentally the transmisa
10、ions are not only installed in the domestic recreational vehiciq but du, hrve been shipped to a nai embly plant in Great Britain as vehicle wmpo- nents since 1991 with the vdume of 24 thousand units per Y - - In Nov.91, a number of MUA units had been rejected in Great Britain because o f unacceptabl
11、e trnusfer gear nase with GM rating 3 - 4 . (TAle 1) Same kinds of claime had been repolted in Japan and in the U.S.A. a l s o . Therefore we have started respective improvement activities shown below since Mu.= 0 Cear deveiopment - Study of the ideal involute heliaid Impmrnent o f simving 7 for gea
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