Formation mechanism and geometry characteristics of exit-direction burrs generated in surface grinding of Ti-6Al-4V titanium alloy

The formation mechanism and geometry characteristics of exit-direction burrs in surface grinding of Ti-6Al-4V titanium alloy have been investigated based on finite element analysis in this article. Three types of burrs, i.e., positive burrs, negative burrs, and residual burrs, are classified; meanwh...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2017-03, Vol.89 (5-8), p.2299-2313
Main Authors: Fu, Dengkui, Ding, Wenfeng, Yang, Shubao, Miao, Qing, Fu, Yucan
Format: Article
Language:English
Subjects:
Burrs
CAE) and Design
Computer-Aided Engineering (CAD
Engineering
Finite element method
Grinding
Industrial and Production Engineering
Machining
Mechanical Engineering
Media Management
Original Article
Parameters
Rake angle
Surface grinding
Thickness
Titanium alloys
Titanium base alloys
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Summary:The formation mechanism and geometry characteristics of exit-direction burrs in surface grinding of Ti-6Al-4V titanium alloy have been investigated based on finite element analysis in this article. Three types of burrs, i.e., positive burrs, negative burrs, and residual burrs, are classified; meanwhile, the formation stages of different burrs are defined. The effects of three critical parameters in surface grinding (i.e., grinding speed, uncut chip thickness, and negative rake angle of CBN grains) on burr formation are discussed. Results obtained display that the burr height and root thickness increase with decreasing of grinding speed and increasing of uncut chip thickness and negative rake angle magnitude of CBN grains. A positive burr, which is in favor of being removed easily and therefore lowering the machining cost, could be generated when a parameter combination (i.e., a higher grinding speed, a smaller uncut chip thickness, and a smaller magnitude of negative rake angle of CBN grain) is utilized.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-016-9289-6