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Synovial sarcoma: A case report of first presentation at penoscrotal junction [PDF]
Urology Case ReportsSynovial sarcoma is a rare malignant tumour that arises from mesenchymal origin. This case is about synovial sarcoma in unusual place, the scrotum and penile shaft. A 36-year-old man presented with a tender penoscrotal mass for 5 years.
Abumelha S +5 more
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Effect of alignment errors on operation of machine tool spindle with active bearing preloading module [PDF]
Archive of Mechanical Engineering, 2020 The article describes a test stand with a spindle equipped with an active bearing preload system using piezoelectric actuators. The proper functioning of the spindle and the active system was associated with the correct alignment of the spindle shaft and
Paweł Turek, Marek Stembalski
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Development of the spindle shaft for machining center using high thermal conductivity material
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023 Due to the high precision and high speed of spindles for machining centers, thermal issues cannot be avoided. The temperature rises of the spindle shaft, which is the rotating component, causes issues such as increased thermal displacement in the tool ...
Shingo KAJIKAWA +3 more
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Rotation Accuracy Analysis of Aerostatic Spindle Considering Shaft’s Roundness and Cylindricity
Applied Sciences, 2021 The rotation accuracy of the aerostatic spindle can easily be affected by shaft shape errors due to the small gas film clearance. Thus, the main shaft shape errors with the largest scale—that is, the roundness and cylindricity errors—are studied in this ...
Guoqing Zhang +5 more
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Multi-Field Coupling Dynamics Modeling of Aerostatic Spindle
Micromachines, 2021 The aerostatic spindle in the ultra-precision machine tool shows the complex multi-field coupling dynamics behavior under working condition. The numerical investigation helps to better understand the dynamic characteristics of the aerostatic spindle and ...
Guoda Chen, Yijie Chen
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Механика машин, механизмов и материалов, 2021 The article presents the results of studies of the shaft oscillation processes of a precision horizontal highspeed electric spindle with aerostatic radial and axial supports, used at Planar OJSC in equipment for separation of semiconductor plates into ...
Alexander E. Kovensky +2 more
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Dynamic analysis of grinding electric spindle bearing-rotor system under eccentric action
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023 To study the influence of eccentricity on the dynamic characteristics of grinding electric spindle, firstly, the nonlinear oil film force (NOFF) expression of sliding bearing is established based on the boundary condition of adhesion pressure.
Lianchao SHENG, Qi SUN, Guo YE, Wei LI
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Research on Life Prediction of Fan Spindle Bearing Based on Gated Recurrent Unit Neural Network [PDF]
E3S Web of Conferences, 2021 In order to solve the problems of redundancy calculation and inefficiency of traditional machine learning algorithm in dealing with large amount of historical data of fan, a new predictive algorithm based on gated recurrent unit (GRU) is proposed to ...
Ma Jianeng
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Design of Compound Machine Tool for Ultra-Precision Shaft Parts [PDF]
MATEC Web of Conferences, 2020 Ultra-precision shaft components are widely used, such as the shaft core of air-floating spindle, etc. At present, the final precision of such workpieces are difficult to reach through CNC machining tools, but often with the help of manual grinding, of ...
Sun Zizhou +5 more
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An investigation into reducing the spindle acceleration energy consumption of machine tools [PDF]
, 2016 Machine tools are widely used in the manufacturing industry, and consume large amount of energy. Spindle acceleration appears frequently while machine tools are working. It produces power peak which is highly energy intensive. As a result, a considerable
Jia, Shun +5 more
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