Static & Dynamic Characteristics Analysis of VMC 500 throught Location and Configuration Column Joint Variation with Machining Force Consideration

• Main Author: Otchere, Emanuel
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/45780
• Institution: Institut Teknologi Bandung

One factor that determines the quality of products produced by machine tools is accuracy. The accuracy of the product is influenced by the static and dynamic stiffness of machine tools. Increasing the stiffness can be done by reducing the number of connections. Because of its casting limitation, separating the column into two parts and then joining the connection must be done. However, the presence of this connection will affect the static and dynamic characteristics of a machine tool. Therefore, compatibility analysis of static and dynamic characteristics with simulation in ANSYS software needs to be done to get the design with the most optimal rigidity. Static analysis is carried out with loads obtained from the machine components themselves and the cutting force and then varies the height of the connection between the upper and lower columns and the orientation of the connections. The force in static analysis is a static cutting force which is estimated to be obtained by calculations with certain parameters. While the force in the dynamic analysis is a sinusoidal force with the frequency value adjusting to the spindle rotational speed value. When the frequency of operation is equal to the natural frequency of the VMC 500 machine, the phenomenon of resonance that will cause vibrations and additional changes will occur, so it must be avoided in order not to damage the accuracy and the precision of the product. The simulation results from the static analysis will form the maximum deformation at the cutting point of the tool while for dynamic analysis is a natural frequency, mode shapes and dynamic compliance graph at the cutting point of the tool. From each analysis, the connection model that has the best static and dynamic stiffness for location variation and configuration variation will be obtained.