Abstract
In order to study the cutting force in machining of titanium alloy with solid carbide cutters of different geometriy, variable helix (VH), variable pitch (VP) and standard (SD) milling cutter were used to machine titanium alloy TB6 via dry milling. The influence of cutting parameters and geometric structure parameters of milling cutters on the cutting force was investigated by the analysis of radial and tangential forces in the cutting process with three kinds of milling cutters. The experiment results showed that cutting parameters had the same influence on the radial force and tangential force of the three milling cutters, and the influence of geometric structure parameters on radial force and tangential force was different. Compared with the SD milling cutter, the change of pitch and helix resulted in the increase of radial and tangential forces, the pitch change led to the radial force being larger than the tangential force, and the helix change led to the radial force being smaller than the tangential force.
Highlights
Titanium alloys have been widely used in the aerospace, automotive, biomedical and other manufacturing industries because of their good strength-to-weight ratio, high strength and toughness, excellent corrosion resistance etc. [1,2,3,4]
Titanium alloy TB6 was machined with variable helix (VH), variable pitch (VP) and SD milling cutter in the experiment
Compared with the SD milling cutter, the changes of pitch and helix resulted in the increase of radial and tangential forces, the pitch change led to the radial force being larger than the tangential force, and the helix change led to the radial force being smaller than the tangential force
Summary
Titanium alloys have been widely used in the aerospace, automotive, biomedical and other manufacturing industries because of their good strength-to-weight ratio, high strength and toughness, excellent corrosion resistance etc. [1,2,3,4]. Some material characteristics of titanium alloy such as low thermal conductivity, low elastic modulus and high chemical activity etc., can increase the machining difficulty, and impair the parts qualities [5]. Cutting forces can cause the vibration of cutting system, changing the geometric structure parameters of milling cutter is an effective method to reduce the vibration and improve the quality of machined surface. The published literatures are rarely in relation to machining high strength titanium alloy TB6 with vibration-free milling cutter. This study will investigate the cutting forces in cutting titanium alloy TB6 with vibration-free milling cutter (VP and VH milling cutter) and the SD milling cutter, analyze the influence of cutting parameters and geometric structure parameters of milling cutter on cutting forces
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