Multi-edge super-small-diameter drill point
A technology of small diameter and drill needle, which is applied in the direction of repairing drills, drilling tool accessories, drilling/drilling equipment, etc., can solve the problems of low life and broken needles, etc., and achieve the effect of long service life, reduced broken needles and good rigidity
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[0018] A preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings. However, the scope of protection of the present invention is not limited to the following examples, that is, any simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the description are still within the scope of the patent of the present invention.
[0019] Such as figure 1 , 2 As shown, a multi-edged ultra-small-diameter drill includes a needle handle 1 and a needle body 2 arranged at one end of the needle handle. The end of the needle body away from the needle handle is a tip 3. Several helical chip removal grooves 4 are provided from the axis direction of the needle body to the tip, and several helical chip removal grooves are arranged at equal intervals and divide the tip into several identical sub-points; each row The cutting edge 5 is formed at the junction of the chip f...
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