© 2018 JETIR August 2018, Volume 5, Issue 8 www.jetir.org (ISSN-2349-5162) JETIRA006128 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 727 DESIGN AND MANUFACTURING OF FUZE SHELL Pooja Vijay Angolkar, Pratibha Dharmavarapu, Dr. P.Ravikanth Raju Anurag Group of Institutions,Hyderabad ABSTRACT- Projectiles that explode, carry chemicals, or carry other payloads are called shells. Projectiles that are completely solid or do not explode are sometimes called shot. Most modern projectiles have many features in common. These features include a fuze, ogive, bourrelet, and rotating band Fuze shell is a part of projectile which is assembled at front. As fuze shell is part of projectile it requires high accuracy in dimension and surface finish. This makes the manufacturing of Fuze shell a tough task. Due to its complicated structure This project deals with drafting, 3d modeling, process plan and NC program generation and manufacturing of the fuse shell. Drafting and 3d modeling is done using NX-CAD software. Process plan and NC program generation is done using NX-CAM software. Keywords : Fuze Shell, Design And Manufacturing, Projectiles, NC Program, 3D Modeling. INTRODUCTION An fuze shell is the type of military weapon fuze used with artillery munitions, typically projectiles fired by guns. A fuze is a device that initiates an explosive function in a munition, most commonly causing it to detonate or release its contents, when its activation conditions are met. This action typically occurs a preset time after firing (time fuze), or on physical contact with (contact fuze) or detected proximity to the ground, a structure or other target (proximity fuze). Fuze shell are tailored to function in the special circumstances of artillery projectiles, the relevant factors are the projectile's initial rapid acceleration, high velocity and usually rapid rotation, which affect both safety and arming requirements and options, and the target may be moving or stationary. Fuze shell may be initiated by a timer mechanism, impact or detection of proximity to the target, or a combination of these. Fuze shell is a part of rocket hence it requires accurate dimensions and due to its cone type stucture it demands for fixture. Fig.1: Rocket with Parts DESIGNING FIXTURE FOR FUZE SHELL Fixtures accurately locate and secure a part during machining operations such that the part can be manufactured to design specifications. To reduce the design costs associated with fixturing, various computer-aided fixture design methods have been developed through the years to assist the fixture designer. Fixture layout design is a major concern in the development of automated fixture design systems. The task of fixture layout design is to layout a set of locating & clamping points on work piece surfaces such that the work piece is accurately located & completely restrained during manufacturing operations. Fixtures accurately locate and secure a part during machining operations such that the part can be manufactured to design specifications. To reduce the design costs associated with fixturing, various computer-aided fixture design (CAFD) methods have been developed through the years to assist the fixture designer. Fixture Design Concepts: (Managing degree of freedom)3:2:1 (3 At least 3-Point to define a plane) (2 At least 2-Points to define location) (1 At least 1-point for clamping) Fixture layout design has received considerable attention in the recent years. However, little attention has been focused on the optimization of manufacturing fixture layout under dynamic conditions of the work piece.