Graphical modeling of gear tooth generating process with rack-shaped tool aiming constant area of detached chips
Journal Title: Proceedings in Manufacturing Systems - Year 2018, Vol 13, Issue 2
Abstract
The process of machining with rack shaped tool the cylindrical involute gears is commonly performed on MAAG machine tools, having wide applications in practice. Despite this process is fundamentally rigorous, at the same time it is characterized by a large variation of detached chip area, which negatively influences the toothing process productivity. This paper addresses the case of gear teeth generating with a multi-tooth rack-shaped tool, approached on the base of CATIA graphical modeling. It is proposed a modification of the rolling process, taking part between the centrodes attached to both workpiece and tool, such as the sum of the chips areas that are simultaneously detached by tool teeth at each stroke becomes quasi-constant. Thereby, a variation law for workpiece circular feed is determined, without altering the rolling condition, which would have as consequence the unwanted modification of generated teeth profile. This type of feed variation law can be implemented on NC machine tools of newest generation, provided with the possibility of driving the rolling kinematical chain with non-uniform, adjustable speed.
Authors and Affiliations
Mihail BORDEANU, Gabriel FRUMUŞANU, Nicolae Oancea
Keywords
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- EP ID EP415318
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