Pengaruh Variasi Kecepatan Motor pada Mesin Penghalus Permukaan Tipe Disc dan Belt terhadap Tingkat Kekasaran Permukaan Benda Kerja

Sandpaper or called sand paper is a kind of paper that is used to make the surface of objects become more subtle. Automatic smoothing machines are designed to promote the superiority of accuracy and higher precision to facilitate the results obtained. The specification of the tool is to use AC motor driver to adjust the speed of rotation of AC motor (dynamo). For material testing using 9 wooden cubits sized 30 mm. The test was conducted to determine the level of surface roughness of the workpiece at 1100 RPM, 1300 RPM and 1500 RPM respectively. Furthermore, we will look for the average value of each motor rotation speed is different to know the magnitude of the roughness and wear and tear on the workpiece. The rotation speed value is measured using a Tachometer while the output voltage is measured using a digital AVO meter. After the measured data will be written to know the motor rotation speed variation that is set using motor driver.