• Panchal Kishan R.
• Jaypalsinh Rana
• Panchal Parth P.
• Parmar Kirti R.
• Prajapati Jimil B.

This paper discuss about square hole producing with help of special purpose tool. The prominent target of our project is to predict how a annular overture eligible be permute into a quadrilateral overture by distinctly a autoatic bond. Producing square hole is very common and useful technique, but there is a problem of high cost and complexity in manufacturing but with help of special purpose tool overcome this problem. There are many methods available in the industries, but making a square hole with drilling operation is a difficult concept. The attachment of 3-Edge cutting tool & universal joint fitted in vertical drilling machine. Circular and square guide fitted on fixture and fixture hold on vice. 3-Edge cutting tool guided by both guide and perform operation on work piece.

– Hole, 3-edge cutting tool, Universal Joint, Fixture, Guide.

"Design & Fabrication Of Attachment To Generate Square Hole In Drilling Machine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.1-7, April-2019, Available :http://www.jetir.org/papers/JETIR1904K01.pdf

"Design & Fabrication Of Attachment To Generate Square Hole In Drilling Machine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp1-7, April-2019, Available at : http://www.jetir.org/papers/JETIR1904K01.pdf