Yarn tension during manufacturing has a large influence on the processing efficiency, yarn properties, and hence on fabric characteristics. In this work the dynamic tension two-for-one twister was investigated and the effect of various parameters the dynamic were studied. A test set-up unit was built to simulate the Two-for-one twister, so the effect of spindle speed, winding velocity feed pack...

This article presents a test stand with model high-speed spindle equipped system of active control the preload bearings. was changed by means three piezo actuators. The work results tests during which commercial Abacus measuring equipment from Data Physics used. Its application has shown that angular contact ball bearings is responsive to changes in value these change resulted resonant frequenc...

This paper presents an expert spindle design system strategy which is based on the efficient utilization of past design experience, the laws of machine design, dynamics and metal cutting mechanics. The configuration of the spindle is decided from the specifications of the workpiece material, desired cutting conditions, and most common tools used on the machine tool. The spindle drive mechanism,...

The spindle occupies a central position in cell division as it builds up the chromosome-separating machine. Here we analysed the dynamics of spindle formation in acentrosomal plant cells by visualizing microtubules labelled with GFP-EB1, GFP-MAP4 and GFP-alpha-tubulin and chromosomes marked by the vital dye SYTO82. During prophase, few microtubules penetrate the nuclear area, followed by nuclea...

The rotor operating stiffness of high-speed motorized spindles (HSMSs) is key to machining accuracy. Because HSMSs are difficult load due their high speeds, a contact loading device was developed test stiffness. dynamic support the front/rear bearings (DSSB) main factor affecting Two novel experimental schemes for measuring DSSB proposed: (1) indirect measurement—by analysing deformation displa...