| 摘要 |
PURPOSE:To make a device concerned in a small size and reduce the costs by compressing the air, which was taken in forcedly from a suction hole with the rotational force of a cylindrical core, at an air circulation hole and a throttle, discharging upon acceleration from the foremost of the core, and thereby eliminating use of an air supply source. CONSTITUTION:From an air suction hole 10 facing in the rotating direction, the outside air is taken in forcedly with rotation of a cylindrical core 2, compressed while under guidance to an air circulation hole 12, compressed furthermore by a throttle 26 having a small section area, and discharged upon acceleration. This cools the machined parts centering on a machining member 6, and thermal deterioration due to increase in the machining heat will be suppressed to ensure enhancement of the machining efficiency. The discharged air cools the machined parts and serves exhausting of the splash. Thus the core 2 itself has the same function as an air supply source of compressor etc. by this constitution, in which the core 2 is equipped with suction hole 10 and air circulation hole 12 and the throttle 26 is formed at the open side end of the circulation hole 12 so as to allow air suction and discharge to be made by its own force, which should eliminate provision of any facility for air supply source. |
