Development of multi-pole magnet fabrication technique for micro-motor using Stereolithography

从这项研究中获得的结果总结如下。（1）基于光固化快速成形的多极磁体生产技术研究了利用光固化快速成形技术生产磁体的工艺任务之一--提高磁体的精度问题。表面测量技术就是围绕着这一途径而发展起来的，其目的就是为了提高设备本身的性能.根据质量工程学原理，建立了一套工艺条件。针对可制造性设计的评价问题，提出了从CAD数据中提取形状特征，并基于这些信息评价可制造性的方法。此外，还开发了基于光固化快速成形的磁体生产实验装置。针对模塑料的问题，进行了材料配比率问题的基础实验，获得了一些信息。（2）多极微型电机用磁铁的评价 ...更多信息 对基于光固化快速成形的多极微小磁体成型工艺进行了初步评价，研究了材料配比对材料的耐载荷和剩余磁通密度的影响。剩余磁通密度变高，使得磁体混合比变高，但是耐受负载变低。此外，结果表明，添加适度的表面活性剂有助于提高剩余磁通密度。对各向异性磁粉的选择性磁取向进行了分析，并提出了一种固定化技术。通过基于光固化成型的多极磁体制造，当使其具有合适的磁体结构时，表明多极磁体的磁化可以在少数磁化轭中有效地令人满意地进行。（3）基于光固化成型的多极微磁体微电机性能评价为了实现基于光固化成型的多自由度步进电机，设计了球形转子，并对球形转子旋转所需的驱动系统进行了分析。通过基于积分单元法进行转矩分析，找出电动机旋转所需的线圈布置和驱动系统。少

The result obtained from this research is summarized below.(1)Multi-pole magnet production technology based on StereolithographyThe improvement problem in accuracy which is one of the technological tasks of the magnet production by Stereolithography was carried out. Surface measurement technology was developed about the approach aiming at improvement of equipment itself. A setup of the processing conditions based on quality engineering was developed. To the problem of evaluation of design for manufacture, approach which extracts the shape feature from CAD data and evaluates fabricating easiness based on the information was carried out. Moreover, the experimental device for enabling the magnet production experiment based on Stereolithography was developed. To the problem of a molding compound, the basic experiment was carried out about the problem of the rate of a compounding ratio of material, and several information was acquired.(2)Evaluation of the magnet for multi-pole micro motorsA … More s fundamental evaluation of the molding technique of a multi-pole tiny magnet based on Stereolithography, the influence on the withstand load and the residual magnetic flux density to a material mixture rate was investigated. A residual magnetic flux density becomes high so that a magnetic body mixing ratio becomes high, but withstand load becomes low. Moreover, it turned out that addition of a moderate surfactant contributes to improvement in a residual magnetic flux density. Analysis of the selective magnetic orientation of anisotropy magnetism powder and an immobilization technology was carried out. By multi-pole magnet fabrication based on Stereolithography, when making it suitable magnet structure, it was shown that magnetization of a multi-pole magnet can be efficiently performed satisfactory in few magnetization yokes.(3)Evaluation of the micro motor using the multi-pole micro magnet based on StereolithographyIn order to realize the multi-degree-of-freedom stepping motor based on Stereolithography, the globular rotor was devised and analysis about a drive system required for rotation of this rotor was carried out. By carrying out torque analysis based on integral element method, arrangement of a coil required for rotation of a motor and a drive system were found out. Less