发明名称 |
Galvanoscanner and laser processing machine |
摘要 |
A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained. |
申请公布号 |
US9030061(B2) |
申请公布日期 |
2015.05.12 |
申请号 |
US201414296576 |
申请日期 |
2014.06.05 |
申请人 |
Via Mechanics, Ltd. |
发明人 |
Yamamoto Akihiro;Doi Akira;Matsuka Daisuke;Toyama Souichi;Sugawara Hiroyuki |
分类号 |
H02K33/00;G02B26/08;G02B26/10;H02K1/27;H02K26/00;H02K21/14;H02K21/12 |
主分类号 |
H02K33/00 |
代理机构 |
Crowell & Moring LLP |
代理人 |
Crowell & Moring LLP |
主权项 |
1. A galvanoscanner comprising:
a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein the permanent magnets are parted into at least two parts per pole by parting lines, and each of the parting lines has a broken line-shaped section convexly curved toward the shaft. |
地址 |
Ebina-shi JP |