Results 81 to 90 of about 1,368 (215)
Deform 3D Simulation and Experimental Study in Machining of AISI 1020 Mild Steel
Journal of EngineeringThe drilling process plays a crucial role in the assembly process of modern-day manufactories. One of the major causes of component rejection during drilling operations is the incorrect selection of spindle speed and feed rate.
Aqib Hussain +5 more
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Spindle rotational speed limit at tightening
Izvestiya MGTU MAMI, 2008 The article reviews the formula for determination of rotational speed limit of multispindle screwing unit at the moment of tightening start.
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Thermal Modelling of a High Speed Motor Spindle
Procedia CIRP, 2012 AbstractThis paper presents a 3D FEM model to predict the thermal behaviour of a high speed motor spindle. This model allows a transient simulation which considers complex boundary conditions like heat sources as well as contact and convective heat transfer between spindle parts. Verification experiments are implemented on a test spindle. Compared with
Uhlmann, E., Hu, J.
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MIS12 Is Required for Kinetochore‐Microtubule Attachment in Oocyte Meiosis
Advanced Science, EarlyView.A model depicting the role of MIS12 in K‐MT attachment during oocyte meiosis. The presence of MIS12 stabilizes bipolar K‐MT attachments by maintaining the function of NDC80 and its interaction with TUBB. This, in turn, promotes KNL1 assembly and subsequent SAC protein recruitment to kinetochores.
Jian Li +9 more
wiley +1 more source
Thermally affected stiffness matrix of angular contact ball bearings in a high-speed spindle system
Advances in Mechanical Engineering, 2019 Bearing stiffness directly affects the dynamic characteristics in a high-speed spindle system and plays an important role in terms of manufacturing quality.
Dinh Sy Truong +2 more
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Advanced Science, EarlyView.Upon mitotic entry, RTN4 relocalizes to the pericentrosomal region, forming a more tubular ER network around centrosomes. CDK1‐mediated phosphorylation of RTN4 increases its interaction with Rab11 GTPase, facilitating dynein‐dependent transport of RTN4 to the pericentrosomal region.
Xiangyu Xu +9 more
wiley +1 more source
MOTION PRECISION ANALYSIS OF PERMANENT MAGNET SYBCHRONOUS GRINDING MOTORIZED SPINDLE
Jixie qiangdu, 2020 With the increasing requirements of the high-speed CNC machine tools for the motion accuracy of the spindle,it is necessary to study the accuracy of the permanent magnet synchronous（ PMS） grinding motorized spindle.
GAO Feng +4 more
doaj
Cutting Force and Cutting Quality during Tapered Milling of Glass Magnesium Board
Applied Sciences, 2019 In this paper, the effects of tool geometry and cutting parameters on cutting force and quality were investigated during the tapered milling of glass magnesium (MGO) board with diamond cutters. The results were as follows: firstly, both the cutting force
Pingxiang Cao +5 more
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Advanced Science, EarlyView.Tumor Ca2+ interference therapy suffers from self‐protective Ca2+ metabolic autoregulation. In this scenario, a versatile metal‐phenolic nanocluster (TCMH) is engineered to modulate mitochondrial calcium uniporter (MCU) ‐mediated mito‐Ca2+ metabolic autonomy.
Ronglong Chen +13 more
wiley +1 more source
Improvement of Stability Limit by Spindle Speed Variation
Journal of the Japan Society of Precision Engineering, 1977 By a programed variation of the spindle speed of machine tools, it is possible to control the onset of the regenerative-type self-excited chatter. In this paper, the effect of the wave form of spindle speed variation and the practical improvement of the metal removal rate in this method are theoretically analyzed, and the results are verified by some ...
Tadashi TAKEMURA +2 more
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