Dynamical Simulation of A CNC Turning Centre (Survey Paper)

This paper shows the most common rotor systems which can be used to analyse a CNC turning center. Starting with the simplest rotor system representation (single-degree-offreedom) up to analysing multi-degree-of-freedom and infinite-degree-of-freedom rotor systems using the TMM (Transfer Matrix Method) when it comes to cases like multi desk rotors and Jeffcott-rotors.

Dynamical simulation of a CNC turning centre

This paper deals with the analysis of a CNC turning centre, more specifically the spindle system. The FEM analysis shows the natural frequencies of the spindle system and the same system was analysed by using the TMM and the influence coefficients method. These analyses pave the way to compare these three methods.

Thermal and structural simulations of a CNC turning centre

This article shows the application of Finite Element Analysis FEA using Siemens NX 12 Nastran for thermal and structural simulations of a CNC turning center CTX Alpha500 Gildemeister. The simulations were performed under steady state conditions, stationary system, the heat generated by the workpiece and the machine is neglected and the control volume remains constant.

Thermal Error Modelling in CNC Machines

Latest trend in increasing the performance characteristics of precision machines is reducing error in machines. Today research is focused on Machine tool accuracy. The effect of thermal error contributes to major part of 70% of volumetric error. The present study aims to establish a new compensation method for CNC Turning centre. Selection of proper temperature variables is a great task in thermal error compensation. In this paper 3 thermal process variables namely spindle speed; temperature and time are used to create thermal error models. Using ANSYS simulation experiments are created.