DESIGN OF ROTARY TABLE OF AUTO TIGHTENING FRONT CUSHION MACHINE AT PT. MATAHARI MEGAH

Abstract

Rotary table is a mechanism commonly used in production lines in the field of automation. One of the design requirements for the rotary table arises during the design process of the Auto Tightening Front Cushion machine which is manufactured by PT. Matahari Megah. However, there is design challenge faced in designing the rotary table system for bolt tightening process on the motorcycle front cushion as the workpiece that requires a high level of precision. Therefore, this study aims to design a rotary table system that meets both functional and economic. The cost-effective design method employed is function-oriented design and VDI 2221 to obtain the most effective design solution. By applying this method, a rotary table design is obtained with a frame made of aluminium profile and pneumatic cylinder drive system equipped with a locking mechanism. Furthermore, a safety assessment of the rotary table design, considering Von Mises stress, deflection, and safety factor which has minimum safety factor of 3.19 for combination load. It indicates that the design is safe and manufacturable. Subsequently, the FESTO round pneumatic cylinder with the type DSNU-40-250-PPV-A is selected as the driving mechanism for the rotary table system. Thus, the designed rotary table can be integrated into the Auto Tightening Front Cushion machine to perform bolt tightening functions automatically and has good precision.