International Journal of Engineering Research And Advanced Technology (IJERAT) E-ISSN : 2454-6135 DOI: http://dx.doi.org/10.7324/IJERAT.2017.3136 Vol.3 (10) Oct -2017 www.ijerat.com Page 35 Design and Fabrication of Gear Cutting Attachment for Lathe Dr. Ramachandra C G 1 , Shashank S 2 , Raghavendra M J 3 , KaushikRanganath T G 4 1 Professor and Head, 2,3 Assistant Professor and 4 U. G Scholar 1-3 Department of Mechanical Engineering, Srinivas Institute of Technology, Mangaluru-574 143, Karnataka, 4 Department of Mechanical Engineering, Sri Jayachamarajendra College of Engineering, Mysuru-570 006, Karnataka, India _______________________________________________________________________________________ ABSTRACT The gear cutting machine lathe attachment is attachable to an existing gear cutting machine so as to eliminate the need for an operator owning both a gear cutting machine and a lathe. It is designed to be mounted to the side of the gear cutting machine and to be used without disturbing a setup in the associated vise. The attachment is also designed to be mounted to the front of a gear cutting machine and allows the programming of the very point of single point tool contact so as to follow whatever contour or steps are desired. This type of cutting is not possible on a lathe with guaranteed accuracy, while on a gear cutting machine it is quite feasible. Mechanical engineering without production and manufacturing is meaningless and inseparable. Production and manufacturing process deals with conversion of raw materials inputs to finished products as per required dimensions, specifications and efficiently using recent technology. The work is on design and fabrication of gear cutting attachment which is used to cut gear or splines over the cylindrical job. The main aim is to prove lathe is a versatile machine Key Words: Design, Fabrication, Gear Cutting, Lathe Attachment. ______________________________________________________________________________________________ 1. INTRODUCTION In recent years, new fabrication techniques have been developed to satisfy the technological demands. Moreover, emphasis is stressed on attachments. Attachments are used in various fields and machines depending upon the needs to be fulfilled and mode of operation. An attachment eliminates the purchasing of a new unit which serves the same purpose. For example, a lathe occupies a place opposite to that of a gear cutting machine, the ten machines mainly used to produce cylindrical and plain surfaces respectively. By implementing an attachment to a unit, the capacity of the unit can be increased which is very economical. Each general purpose conventional machine tool is designed and used for a set of specific machining work on jobs of limited range of shape and size[2]. But often some unusual work also need to be done in a specific machine tools, e.g. milling in a lathe, tapping in a drilling machine, gear teeth cutting in shaping machine and so on. Under such conditions, some special devices or systems are additionally used being mounted in the ordinary machine tools. Such additional special devices, which augment the processing capability of any ordinary machine tool, are known as Attachments, Unlike accessories, Attachments are not that inevitable and procured separately as and when required and obviously on extra payment. Taper cylindrical surface, which is a very common feature of several engineering components, is generally produced in lathes in a number of methods, depending upon length and angle of the tapered position of the job, such as offsetting tailstock, swiveling the compound slide using form tool and combined