Wide groove type drill
A wide groove type drill comprises a drill body, a drill stock is connected to one end of the drill body, a static point is formed at the tail end of the drill body, which is far away from the drill stock, a first cutting edge and a second cutting edge are formed on two sides of the static point res...
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| Sprache: | chi ; eng |
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| Zusammenfassung: | A wide groove type drill comprises a drill body, a drill stock is connected to one end of the drill body, a static point is formed at the tail end of the drill body, which is far away from the drill stock, a first cutting edge and a second cutting edge are formed on two sides of the static point respectively, the first cutting edge is connected with a first chip discharging groove, the second cutting edge is connected with a second chip discharging groove, the first cutting edge rotates towards the drill stock and dents to form the first chip discharging groove, the second cutting edge rotates towards the drill stock and dents to form the second chip discharging groove, the first chip discharging groove and the second discharging groove are communicated to form a third chip discharging groove after rotating for a certain distance, the third chip discharging groove rotates towards the drill stock, and the width of the third chip discharging groove is smaller than the sum of the widths of the first and second c |
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