DEVELOPMENT OF HIGH SPEED LASER SCANNER MOTOR WITH VERY LOW NOISE LEVEL 0277033CA 80096718

开发噪音水平极低的高速激光扫描仪电机 0277033CA 80096718

基本信息

批准号：
13555042
负责人：
YOSHIMOTO Shigeka
金额：
$ 4.03万
依托单位：
TOKYO UNIVERSITY OF SCIENCE
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555042/
关键词：
AERODYNAMIC BEARING VACUUM PUMP LASER SCANNER WINDAGE POWER LOSS SPIRAL GROOVES NOISE LEVEL 動圧型空気軸受真空

项目摘要

The objective of this research is to develop a small sized laser scanner motor with a very low noise level. The proposed laser scanner motor uses the pumping effect of spiral grooves in order to reduce the inner pressure of a scanner housing and decrease the noise level caused by a rotating polygon mirror. The size of a scanner motor can be also reduced by using spiral grooved aerodynamic thrust bearings which can act as both a viscous vacuum pump and a supporting bearing for a rotating scanner rotorIn this research, we first investigated the static and dynamic characteristics of a spiral grooved aerodynamic thrust bearing, theoretically and experimentally. We discussed the pumping characteristics and the load capacity of the spiral grooved aerodynamic thrust as static characteristics. Then the dynamic stiffness and damping coefficients were treated. In addition, theoretical predictions were verified by comparing these results with experimental ones. Next, we designed an actual laser scanner motor using the proposed bearings based on the theoretical predictions. Several tests for the manufactured laser scanner motor were carried out. As a results, the following conclusions were obtained(1). The proposed spiral grooved aerodynamic thrust bearing can have the capability of both a viscous vacuum pump and a supporting bearing(2). The proposed bearing with the bearing clearance of 2.5 μmcan reduce the housing pressure to less than 0.01 Pa at 30,000 rpm(3). Leaser scanning test using the proposed bearing clearly shows the usefulness of the proposed bearing due to the remarkable reduction of noise level and power loss of the scanner motor

这项研究的目的是开发噪声水平非常低的小型激光扫描仪电动机。提出的激光扫描仪电动机使用螺旋凹槽的泵浦效应，以减少扫描仪外壳的内部压力并降低由旋转的多边形镜子引起的噪声水平。通过使用螺旋槽空气动力学推力轴承，扫描仪电动机的大小也可以降低，该轴承既可以充当粘性真空泵，又可以作为旋转扫描仪rotorin的支撑轴承，我们首先研究了螺旋凹槽的空气动力推力轴承的静态和动态特性，该轴向轴向轴承和实验性和实验性。我们讨论了螺旋槽空气动力推力作为静态特性的泵送特性和负载能力。然后处理动态刚度和阻尼系数。另外，通过将这些结果与实验性结果进行比较来验证理论预测。接下来，我们使用基于理论预测的拟议轴承设计了一个实际的激光扫描仪电动机。对制成的激光扫描仪电机进行了几项测试。结果，得出以下结论（1）。提出的螺旋槽空气动力推力轴承可以具有粘性真空泵和支撑轴承的能力（2）。在30,000 rpm时，提议的轴承清除为2.5μmcan的轴承清除率将壳压力降低到小于0.01 pa（3）。使用拟议轴承的租赁扫描测试清楚地表明，由于噪声水平显着降低和扫描仪电机的功率损失，提议的轴承的有用性