Modeling and Experimental Research Regarding the Temperature Distribution along Curved Cutting Edges

Abstract:

The curved cutting edge determines a variable chip thickness that leads to various may energetically load along the cutting edge. For twist drill with curved cutting edges, the machining speed variation along the major cutting edge is significant. The points belong to the drills periphery work with an increased machining speed. The thick of the detached chip by these cutting zones downwards to the periphery, versus the thick corresponding to the zones at the drills axis, may leads, in some conditions, to the evenness of the energetically load along the cutting edge, with direct influence regarding the cutting tools wearing mechanism. In this paper are presented modeling with finite elements developed in the Ansys Workbench environment, regarding the energetically load and the temperature state along the cutting edge with variable working angle, characteristic for twist drills with curved cutting edges. The modeling was made comparative with the drill with straight lined cutting edges, for the same working conditions. In the same time, presents an experimental record of an actual process. It was recorded the temperature along the cutting edge with a variable working angle in a turning process with transversal feed. There are presented results of the finite element modeling and of the experiment that simulated the cutting process at drilling. The experimental results of the finite element modeling confirm the trend for temperature evenness along the cutting edge with variable working angle regarding the drills with straight-line cutting edge.

• Periodical: Advanced Materials Research (Volume 1036)
• Pages: 259-264
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1036.259
• Online since: October 2014
• Authors: Nicuşor Baroiu*, Doina Boazu, Silviu Berbinschi, Virgil Teodor
• Keywords: Curved Cutting Edge, Energetically Load, Twist Drill

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