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The article considers the some features of the screw-threading process in the holes of tiny and the ultra-small diameter (d <1.4 mm). The influence of diameter size on the regularities of machining and chip formation determines the reasons for the low reliability of machining and the ways to increase it.
In this paper, we present a new process that double discharge machining was adopted to fabricate super-hydrophobic surface on aluminium substrate by HS-WEDM (high speed wire cut electrical discharge machining). We optimized the double processing parameters by the orthogonal experiment, and discussed the wetting mechanism on the surface of the specimen. The experiment shows that, when the first and...
Electromechanical rotary joints containing multiple mechanical & electrical components are widely used to transfer power and signal (voice, data & of late video too) information from one stationary electromechanical structure /member called Stator to another rotating member of same assembly called Rotor in large platforms like Naval ships, Combat Vehicles etc. The design challenges involved...
In NC milling process, tool wear measurement is an integral part of establishing tool wear model. In this paper, a new method of measuring tool wear is presented. This method maps tool wear into a kind of material which has no or less influence on tool wear, such as aluminium alloy, to reflect the wear status of milling tools. The reflection is completed by milling hole on this material using the...
Tool geometrical parameters had great influence on the cutting. The orthogonal finite element model was established. The model was used to simulate the influence of the geometrical parameters (rake angle, clearance angle, radius of tool tip) on the high speed cutting of aluminum alloy 7050T7451, and to investigate the influence of these parameters on the chip formation. In the same cutting condition,...
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