Novel drill having cooling housing
A cold shell and drill bit technology, which is applied in drill repairing, drilling tool accessories, drilling/drilling equipment, etc., can solve the problems of chipping and accumulation of cold shell drill bits, blockage of coolant through holes, etc., and achieve large cutting area, Reduce the force surface, which is conducive to the effect of automatic advance and retreat
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[0020] Reference numerals: 1, front cutter, 2, drill body front end, 3, S-shaped cutter, 4, drill body rear end, 5, S-shaped auxiliary cutter, 6, row cutting groove, 7, drill Handle, 8, positioning groove, 9, coolant through hole, 10, filter screen
[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.
[0022] The structure of the cold shell drill bit of the present invention is as figure 1 As shown, a novel cold shell drill bit is formed by connecting two parts of a drill shank 7 and a drill body. The drill body front end 2 of the ∞-shaped body with a straight end face and the drill body rear end 4 of the ∞-shaped body with straight end faces at both ends are integrally formed on the same axis; the front end of the drill tip is provided with a front cutter 1; the drill body The front end...
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