Drill

Abstract

The present invention provides a drill that by forcibly suctioning and discharging of chips, attaining not only prevention of environmental pollution but also simplification of cleaning operation. Drill (1) has air suction hole (5) provided with aperture (5a). Accordingly, by air suctioning through the air suction hole (5), any chips generated at cutting processing can be forcibly suctioned from the aperture (5a). Thus, as the chips can be discharged without the use of cutting liquid, there can be attained prevention of environmental pollution. Further, as not only can the chips be forcibly suctioned from the aperture (5a) but also the chips having been suctioned from the aperture (5a) can be discharged through the air suction hole (5), scattering of the chips on the workpiece can be avoided to thereby attain simplification of cleaning operation.

Description

technical field

[0001] The present invention relates to a drill bit, in particular to a drill bit which discharges chips by forced suction to prevent environmental pollution and facilitate cleaning. Background technique

[0002] Usually, cutting fluid is used in the cutting process to discharge the chips generated during the cutting process. Conventionally, a drill bit known as a drill bit that uses cutting fluid to remove chips has the following structure: an oil hole and a communication hole are provided inside the main body to circulate the cutting fluid; the communication hole communicates with the oil hole and its The front end opens into the flute.

[0003] With this drill, cutting fluid and chips can be discharged from the chip flute by pouring the cutting fluid flowing through the oil hole into the chip flute from the communication hole and discharging along the chip flute.

[0004] In addition, there is also a drill that can remove chips without using cutt...

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