期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：9
页码：8287
DOI：10.15680/IJIRSET.2015.0409040
出版社：S&S Publications
摘要：The automobile normally uses spur and helical gears in transmission with bevel gears in the rear end.Automatic transmission is now widely used. Gear Box, assemblies and quality of its components play a vital roleduring transmission mechanism. Modern gearboxes are characterized by high torque, load demands, low running noiseand compact design. In order to fulfil these requirements, gear specifications have to be accurately controlled. Manyissues have occurred and still do occur during the processing of gears, especially in the areas of Hobbing, Shaving,Heat Treatment processes, etc. and attempts have been made to address them. Fulfilling the customer’s requirements isone of the key performance indicators for any organization. Meeting the quality specifications, costs and delivery timesare vital elements for organization when a project is undertaken. The major challenges faced by the companies in theareas of quality and productivity, can be addressed by using Quality control tools, Statistical approaches, Lean tools,etc. which help in achieving the desired targets. Oerlikon Fairfield- a gear manufacturing MNC successfully uses RootCause Analysis Techniques (PDCA cycle, Cause and Effect Diagram with Shainin Technique combination), DMAICquality improvement Methodology in order to solve the problems occurring during part’s processing. The present paperdeals with Root Step problem occurring during shaving processing of new development part i.e. helical gear. RootStep occurrence has to be eliminated. Current problem being one of important quality issues is resolved and controlledby using a combination of Cause and Effect Diagram with Shainin Technique and DMAIC-6 sigma break throughmethodology. Hob modifications being tried as final resort and hence implementation of modified hob during hobbingstage helped in elimination of root step problem occurring during shaving stage.
关键词：Cause and Effect Diagram; Helical gear; Root Step Problem; Root Cause Analysis (RCA); Hob;modifications..
