Build a Belt Sander in Grinding and Finishing Work

Abstract

The belt sander was designed to improve knife forging time and addresses the issues of uneven bevels in grinding, polishing, and sharpening processes. The researchers designed and built a belt sander as a prototype such that it can effectively cut and polish the desired material surface.   A case study was conducted in a knife-smithing community in Ban Non Yae, Ya Plong Subdistrict, Mueng District, Si Sa Ket Province. The machine consists of a power supply unit, a set of 90-degree pins on the machine base, belt rollers, a sanding belt, and sandpapers. The machine operates by having the motor drives the flywheel, which rotates the sandpapers and grinds the knife bevels at the desired degree and size. The results showed that the prototype machine, with a 5.5-inch flywheel drive, reduced the grinding time by 26.39% (100.44 seconds per knife), increasing the throughput by three pieces per hour compared to the traditional method. Additionally, the workpieces obtained from the prototype were smoother than traditional grinding