Design, Analysis and Modification in Pattern Design Using the Combination of Aluminium and Acrylic Parts in Wooden Pattern

Abstract

Foundry industries are still facing lots of problems regarding casting product and their productivity. Here, the attempt is made for the modification of pattern. During the ejection of mold from the pattern, the worker needs to rap hammer on the wooden pattern that causes breakdown of the pattern. Lot of time is required for repairing wooden pattern. So, it needs some modification in the existing pattern for its strength. In order to reduce the time in repairing pattern, complicated parts and delicate parts are replaced by combination of aluminium and acrylic parts in the wooden pattern, to prevent it from breakdown. By doing this, cast product requires less machining process, which ultimately reduces the cost and time. Complicated parts, mounting section and under-cut parts are built with the loosely fitting section of aluminium and acrylic because thin, small and fin sections of wood get easily broken down and have less period of time. Here, a striking section of acrylic is used for striking hammer over it, instead of directly striking on the pattern. In the modified pattern, a guide lock is also developed to help worker during the placement of cope over the drag. Till now, there is no device for core pattern to separate mold cavity from core pattern. So, to overcome this problem, two conceptual designs of the pneumatic device are mention in this paper. Finite element analysis of modified pattern is also carried out with ANSYS, which concludes that modified pattern sustains more than the existing pattern.

Cite this Article
Navdeep Shaktawat, Patel Chetankumar M. Design, Analysis and Modification in Pattern Design Using the combination of Aluminium and Acrylic Parts in Wooden Pattern. Journal of Experimental & Applied Mechanics. 2017; 8(2): 13–32p.