LASER TURNING DEVICE AND LASER PROCESSING DEVICE

To provide a laser turning device which can cool a prism efficiently in a structure which holds and rotates the prism with a hollow motor.SOLUTION: A laser turning device (40) includes: a prism (41) which causes an incident laser beam (LB) to refract relative to an optical axis (OA); and a rotary electric machine (43) which rotatably holds the prism (41) in a hollow portion. The rotary electric machine (43) includes: a rotor (44) which holds the prism (41); an electromagnetic coil (47) which is provided around the rotor (44) and applies magnetic fields to the rotor (44); a stator (46) which is provided around the rotor (44) and has a storage area for the electromagnetic coil (47); and first cooling medium passages (51, 54) which are provided between the electromagnetic coil (47) and the prism (41) and continuous in an axial direction (AD) and a circumferential direction (CD) of the rotor (44).SELECTED DRAWING: Figure 2 【課題】中空モータでプリズムを保持し、かつ回転させる形態について、プリズムを効率よく冷却できるけるレーザ旋回装置を提供することを目的とする。【解決手段】レーザ旋回装置（４０）は、入射されるレーザ光（ＬＢ）を光軸（ＯＡ）に対して屈折させるプリズム（４１）と、プリズム（４１）を中空部分に回転可能に保持する回転電機（４３）と、を備える。回転電機（４３）は、プリズム（４１）を保持するロータ（４４）と、ロータ（４４）の周囲に設けられ、ロータ（４４）に対して磁界を印加する電磁コイル（４７）と、ロータ（４４）の周囲に設けられ、電磁コイル（４７）の収容領域を有するステータ（４６）と、電磁コイル（４７）とプリズム（４１）との間に設けられる、ロータ（４４）の軸方向（ＡＤ）および周方向（ＣＤ）に連なる第１冷却媒体流路（５１，５４）と、を備える。【選択図】図２