The temperature field distribution has a significant influence on structural performance, thermal deformation, and error compensation. To improve the prediction accuracy of spindle system, comprehensive model considering contact resistance (TCR) interfaces was established to analyze performance high-speed system in present work. An elastoplastic used calculate contacting areas loads interfaces,...

With the development of motorized spindle, cooling effect and distribution capacity become crucial problem system. An optimization method for thermoelectric-based system (TECS) is proposed based on conservation energy to distribute capacity. The main strategy make cold heat input at different regions spindle sleeve equal in real-time through optimizing contact area between conduction (HCS) slee...

In this paper, the method of harmonic suppression and torque ripple reduction is studied for structure characteristics design requirements a high-speed permanent magnet spindle motor. According to magnetic circuit analysis calculation theory synchronous motor (PMSM), reluctance slots are arranged at two ends rotor yoke change external field distribution in order optimize air gap density wavefor...

The meiosis II spindle of Drosophila oocytes is distinctive in structure, consisting of two tandem spindles with anastral distal poles and an aster-associated spindle pole body between the central poles. Assembly of the anastral:astral meiosis II spindle occurs by reorganization of the meiosis I spindle, without breakdown of the meiosis I spindle. The unusual disk- or ring-shaped central spindl...

Background: Mammalian oocyte undergoes a series of structural nuclear modulations during maturation in order to obtain full competence to support fertilization and early embryonic development. Microtubules are major cytoskeleton components and have pivotal modulators for chromosomal movement, and it has been shown that partial or immature spindle organization may compromise correct ploidy of th...

Spindle length varies dramatically across species and during early development to segregate chromosomes optimally. Both intrinsic factors, such as regulatory molecules, and extrinsic factors, such as cytoplasmic volume, determine spindle length scaling. However, the properties that govern spindle shape and whether these features can be modulated remain unknown. Here, we analyzed quantitatively ...