Abstract The rotary table vibration of the spin coater directly impacts quality coating film. In view unclear characteristics during operation, and its influencing factors considering spindle system are studied. Based on elastic contact theory multi-body theory, when parts flexible analyzed by establishing multi-rigid body coupling dynamics models, respectively. By comparing with measurement re...

The basic concept of dynamic characteristics of spindle is introduced. The first ten order vibration mode and natural frequency of shaft are obtained by modal analysis and harmonic response analysis using software ANSYS. The deformation trend of spindle under resonance state is analysed and the contrast between theory and simulation critical speed is done. The frequency response curve of spindl...

For decades, models have been developed for predicting the size of the weld nugget and heat affected zones in fusion welded structures. The basis for these models is the welding heat input, which is fairly well understood for most arc welding processes. However, this traditional approach is not as straightforward for friction stir welding (FSW). To date, no definitive relationship exists to qua...

Cell size is one of the critical parameters controlling the size of intracellular structures. A well-known example is the constant nuclear-to-cytoplasmic ratio (N/C ratio) [1-5]. The length of the metaphase spindle is proportional to cell size, but it has an upper limit during early embryogenesis [6]. During anaphase, the mitotic spindle elongates and delivers the centrosomes and sister chromat...

Strong vibration is the main factor leading to spinning spindle failure, which closely related end configuration and surface coating. In this study, effects of coating on characteristics spindles are studied, tests were conducted a multifunctional test bench by using three different types without YD4203C pointed with self-lubricating under various high-speed no-load conditions. The results show...