Pengaruh Kecepatan Putaran Spindel Terhadap Kekasaran Permukaan Hasil Pemesinan Cnc Router Pada Pembuatan Souvenir Dengan Media MDF (Medium Density Fibreboard)

This study aims to determine the effect of rpm variations on manufacturing machined souvenirs CNC milling routers 3 axis in mdf material, on the surface roughness produced in units (Ra) which results are good, and the effect of feed rate variations on the machining process time. This research uses mdf materials and uses CNC milling machines. 3 axis routers with mach3 control machining process are carried out with a rpm variation, and surface roughness testing using a roughness testing device (Roughnes Tester Type TR200 with ISO standard). The results showed that the feed rate variation produced different levels of roughness in the machining results of CNC 3 axis router milling, the level of surface roughness in the CNC milling process of 3 axis routers with mdf material will produce a roughness level between N8 and N9. From the test results it can be seen that the best average roughness (Ra) of the rpm variation, obtained in the third specimen using an rpm 9000 with an average roughness value of 5.030 µm, and for the average roughness (Ra) the best total of the rpm variations obtained the best average roughness value at the rpm 9000 with an average roughness value of 5.030 µm. Based on the results of the average time measurement in the souvenir manufacturing process using the 3 axis CNC router milling machine using a different rpm the fastest time is obtained at the rpm 9000 with a time of 1803 seconds. Keywords : Rpm, Mdf, CNC milling Router 3 axis, Roughness