Study on Tool Wear and Cutting Torque of Gun Drill

Yong Guo Wang; Xiang Ping Yan; G.C. Tu

doi:10.4028/www.scientific.net/KEM.499.318

Paper Titles

Review of Quick-Point Grinding Technology
p.295

Simulation on Grind-Hardening Residual Stress Field of 48MnV Steel
p.301

Study of Cutting Forces Models for Micro-Cutting Based on Strain Gradient
p.307

Study on Macro-Morphology of Hard Whirling Chips
p.312

Study on Tool Wear and Cutting Torque of Gun Drill
p.318

Test Analysis of Milling Force of Titanium Alloy Base on MATLAB
p.324

The Application of Swirling Cavitation in Wastewater Treatment Device
p.330

The Development of the Efficiency Enhancement Mechanism of the Vertical Axis Wind Turbine
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The Effect of Tool Edge Preparation of Indexable Carbide Insert
p.342

HomeKey Engineering MaterialsKey Engineering Materials Vol. 499Study on Tool Wear and Cutting Torque of Gun Drill

Study on Tool Wear and Cutting Torque of Gun Drill

Abstract:

The force model of gun drill was put forward. It was found that the torque was sensitive to wear and carried the information of the status of wear stage. Moreover, friction between wear pad and work piece was the main source of torque. The experiment applied in studying the correlation between torque and wear has been performed on gun drill with and without TiAlN coating for machining steel S48CSiV with minimum quantity lubrication (MQL). The torque was increasing responding to the increasing wear of gun drill. The TiAlN coating delayed the wear rate and decreased the torque in the initial wear and gradual wear stage of the coated gun drill. The spallation of coating always led to the premature failure of coated gun drill and the spallation appeared if the rubbing and sliding force generated in the interface between the wear pad and the newly surface of work piece after drilling obtained a higher value than the coating’s adhered strength to carbide substrate materials.