In milling, two different self-excited vibrations have been reported; regenerative and mode coupling chatter. The chatter mechanism has extensively studied validated with tests whereas was reported a long time ago for threading operations. presented models were based only on current of the system but not delayed vibrations. With increase in research carried out robotic milling operations, low f...

BTA 1 deep hole drilling is a method for producing precision bores with high length to diameter ratios. The long and slender tools feature low torsional and bending stiffness. This may lead to undesirable dynamic disturbances of the machining process usually classified as either chatter vibration or spiralling. Prediction and identification of the causes of these process failures is important f...

This paper presents an expert spindle design system strategy which is based on the efficient utilization of past design experience, the laws of machine design, dynamics and metal cutting mechanics. The configuration of the spindle is decided from the specifications of the workpiece material, desired cutting conditions, and most common tools used on the machine tool. The spindle drive mechanism,...

In numerical control (NC)-based machining, NC data-based tool paths affect both quality and productivity. data are generated according to cutting conditions. However, causing excessive load can accelerate wear even result in damage. the opposite case, increasing machining time influence surface from perspective of dynamics machine tool–material–tool combination. There have been a lot studies on...

The stability lobe diagram (SLD) is commonly used to determine the suitable cutting parameters of machining system in order achieve a chatter-free process. An improved full-discretization method (FDM) proposed predict SLD based on hybrid interpolation scheme Newton and Lagrange polynomials. In solve SLD, third-order polynomial employed interpolate state term physical space equation system. Mean...