“ADVANCE TYPES OF DRILL BIT - A REVIEW”

PRODUCTION

The growth of Indian manufacturing sector depends largely on its productivity & quality. Drilling is the most common machining operation and it forms the highest machining cost in many manufacturing activities. In this paper, in-depth review on advancement in drill bit with the availability of a large array of tool geometries, materials and coatings. It is has become a challenging task to select the best tool and cutting parameters that would result in the lowest machining cost or highest profit rate. Furthermore, to drill a satisfactory hole in any material, the correct type of drill bit must be used, it must be used correctly and be sharpened as appropriate. For basic requirements, a set of high-speed steel twist drills and some masonry bits will probably be sufficient for the average handyman. But for more sophisticated jobs/material, others bits will be required - perhaps larger, or designed for a specific material/purpose.

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