Design, Construction, and Analysis of Dies Embossing Machine for Application on Leather

• Main Author: Prawidian Alamanda, Hery
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/37742
• Institution: Institut Teknologi Bandung

Dies embossing is a product that is used to produce a 3 dimensional relief on a surface of a particular media. Dies embossing are generally used in leather industries to give an embossed effect on the leather product. In the designing process of the dies embossing, it is necessary to use an ArtCAM JewelSmith 9.0, software to make things easier. The relief on the die is the Ganesha ITB relief with the contoured words Faculty of Mechanical and Aerospace Engineering engraved on it . The production process of dies embossing uses a 4 axis CNC milling machine. This machining process uses 2 machining methods which are raster and offset. The parameters that are used in this machining process are different for each relief. The stepover used in the Ganesha relief is 0.02–0.05 mm, with a feedrate of 3–5 mm/s. The stepover used for the circle relief is 0.05 mm with a feedrate of 0.5 mm/s. For the text relief, the stepover used is 0.01–0.015 mm with a feedrate of 1.5–3 mm/s. The stepdown for the overall relief is 0.1 mm with a spindle rotation of 20000 rpm. In the application process on leather, it should use genuine leather whose thickness is 1–1.2 mm. In its application on leather, there is an embossing parameter which produce good-quality emboss under pressure used is 140–150 bar, a temperature of 150oC, and with a pressing time of 10–11 seconds.