Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
The Influence of Cutting Edge Preparation on Thrust Force and Torque in Drilling of SAE 4144M
Submission Author:
Milton Polli , PR
Co-Authors:
Moises Santana, Milton Polli
Presenter: Moises Santana
doi://10.26678/ABCM.COBEM2017.COB17-0648
Abstract
The cutting edge preparation is a process which has drawn attention from the tool’s manufacturing and refurbishing industry due to specialization to its benefits specially to tool life. This process results in a major competitive advantage to those who have the knowledge of its application. As far as the twist drills are concerned, the lack of information is even greater, due to the high complexity of the tool and process itself. This paper presents the influence of twist drills cutting edge preparation on thrust force and torque in drilling process of SAE 4144M quenched and tempered steel. Experiments were also performed on SAE 4144M without heat treatment, SAE 4140 and SAE 8620 steel in order to compare the resulting torque and thrust force for the honed geometry. The manual brushing process was used to prepare tools with rounded edges and manual filing process was used to prepare tools with chamfered edges. The results showed that there was no significant difference in torque between the analyzed geometries, however the thrust force was lower for the sharpened tool without any edge preparation.
Keywords
Drilling, Honing, Twist drill
