Configuration study on a drill machine having milling function

[[abstract]]Milling and drill machines are popular machines in mechanical engineering. Milling is very important in mechanical processing. It may, however, be unnecessary and expensive for some companies of small or medium sizes to acquire one for their own use. This research aims at analyzing and designing a milling/drill machine based on an existing drill machine available in workshops. The main approach is to study technical features of the existing drill machine, calculate and design the milling machine from the basic parameters as cutting force and power of drill machine. Based on the technical requirements for the design, which are represented in assembly drawing, the improvement in the function was briefly shown in different steps. Cutting force is calculated using the feature of a drilling machine, which is 6415 N. Milling machine is designed with six levels of feed rate for manufacturing process, which are 63, 90, 125, 180, 250, and 335 mm/min. With a 0.037 kW motor, the revolution after the gear reduces is 60 rpm. Once the calculations of gear, lead screw, speed and capacity of the motor have been completed, the feed rate is determined. Gear box is designed with transmission units, which can provide 6 levels of feed rates as required when they are in combination. The outcome of this research is a milling/drill machine that has been theoretically designed and calculated. The assembly drawing, which can meet the technical requirements, can be applied to real drill machine. An approach is provided to improve (and design) a drill machine into an ideal drill/milling machine to be used by small or medium sized companies. Keywords: Milling/Drill machine, Drill machine, Milling machine, Design milling machine, Gear box