Drilling Tool
1 Assignment
0 Petitions
Accused Products
Abstract
A cutting blade 5 is formed by firmly fixing a tip 4 comprising a superabrasive compact to the top end of a shank 2. Nick grooves are formed on the cutting blade as a lateral separation means for separating swarf in the lateral direction and rounding treatment is applied to the cutting edge 6 of the cutting blade in order to configure a longitudinal separation means for separating the swarf in the longitudinal direction. The swarf is separated at the part of the cutting blade in both the lateral and longitudinal directions and fractionized into very fine pieces. By doing so, it is possible to provide a drilling tool which allows swarf to be surely separated in the lateral and longitudinal directions and fractionized even when a hole is created with a large machining thickness in the radial direction.
10 Citations
23 Claims
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1-4. -4. (canceled)
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5. A drilling tool produced by firmly fixing a tip having a superabrasive compact at the top end of a spindle-shaped shank and thus forming cutting blades at the tip, comprising at the cutting edges of the cutting blades:
- a longitudinal separation means for separating swarf generated at the cutting edges of the cutting blades in the direction of the length of the swarf; and
a lateral separation means for separating the swarf in the direction of the width thereof. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- a longitudinal separation means for separating swarf generated at the cutting edges of the cutting blades in the direction of the length of the swarf; and
Specification