| 摘要 |
<p>A tap that by forcibly suctioning and discharging of chips, attains not only prevention of environmental pollution but also simplification of cleaning operation. Tap (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.</p> |
