Fanuc Corporation

Kenji Mitsui

Norio Karube

Yasuyuki Morita

Kenji Nakahara

Yoshinori Nakata

Nobuaki Iehisa

Mitsuo Manabe

Solid-state laser oscillating device

Blower for a gas laser

Laser machining apparatus with head support by angularly movable

Gas laser blower

Laser oscillator using a plate-type heat exchanger

There is provided a turbo blower for lasers which is capable of effectively cooling a shaft and bearings thereof. Oil held in a shaft support member is drawn up via an oil inlet port by a centrifugal force generated by rotation of the shaft, and passes through a cooling oil passage extending through the shaft to be discharged from an oil outlet port provided below an upper one of rolling bearings as the bearings. The oil discharged from the outlet port returns via an oil return passage to an oil sump. While passing through the oil return passage, the oil is cooled by a coolant circulating through an coolant passage. Further, part of the oil discharged from the oil outlet port is supplied to the upper one of the bearings for lubrication. On the other hand, part of the oil held within the shaft support member is drawn up along a tapered portion of an oil suction head by the centrifugal force generated by rotation of the oil suction head for lubrication of a corresponding one of the rolling bearings. A large amount of oil flowing through the cooling oil passage can deprive the shaft and the rotor of heat, thereby effectively cooling the bearings as well.

Turbo blower for lasers

Growing community of inventors

Asaka, Japan

Kenji Mitsui