Effect of clearance and punch speed on the cutting surface quality results of a brass blanking on the micropunch CNC machine Available to Purchase

This study is an early stage of testing of micro punch CNC machine that has been created to obtain the best parameters in the blanking process by using certain variables. An experiment to determine the effect of clearance and the punch speed in brass with the workpiece in the form of a circular hole diameter of 800 µm was conducted. This study uses micro punch CNC machine designed and tested through simulations and experiments directly related to the ability and requirement. Clearance used is 2.5 to 10% with a certain range. The slab thickness used is 300 µm. The punch speed variation used is 100, 800, 1600 and 2500 mm / minute. This study shows the influence of clearance on the punch result surface quality, the smaller of the clearance then the greater burnish area produced than the roll over, fracture and burr zone. The effect of the punch speed used show low leverage. Design, manufacturing, and testing of this machine is an early reference to the development of punch machine in the manufacturing of medical devices and micro-sized mechanics such as micro-filter and bone plates.