Results 261 to 270 of about 1,861,377 (295)
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2020
This paper extends the proposed dynamic analysis of spindle with conventional bearings of Part 1 and demonstrates feasibility of hybrid bearing set (HBS) usage in machine tool spindles. HBS consists of permanent magnet bearing (PMB) and conventional angular contact bearing (ACB). The rotordynamic and unbalance response of vertical machining center (VMC)
Gireesha R. Chalageri +2 more
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This paper extends the proposed dynamic analysis of spindle with conventional bearings of Part 1 and demonstrates feasibility of hybrid bearing set (HBS) usage in machine tool spindles. HBS consists of permanent magnet bearing (PMB) and conventional angular contact bearing (ACB). The rotordynamic and unbalance response of vertical machining center (VMC)
Gireesha R. Chalageri +2 more
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Measurement Science and Technology, 1999
This report examines the measurement of rotational accuracy for machine tools, using the concept of cylindrical error on linear motion. This measurement can be divided into three steps: first, separate the straight-line motion error of the slide track from motional parts of the machine tools; next, choose the basic cross section of cylinder and ...
Cha'o-Kuang Chen, San-Ching Wu
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This report examines the measurement of rotational accuracy for machine tools, using the concept of cylindrical error on linear motion. This measurement can be divided into three steps: first, separate the straight-line motion error of the slide track from motional parts of the machine tools; next, choose the basic cross section of cylinder and ...
Cha'o-Kuang Chen, San-Ching Wu
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Structure of thermal contact interaction of parts spindle assembly of a metal-cutting machine
2020Based on the use of electrothermal analogy, the theory of phased contraction of heat flows during the passage of parts and taking into account macro- and microgeometry of the contacting surfaces, dependences are obtained that allow one to determine the thermal resistance of the contacts of the spindle bearing. Estimating the resistance of the medium in
Denisenko, A.F., Podkruglyak, L.Yu.
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Research on a permanent magnet synchronous motor with parted permanent magnet used for spindle
2012 16th International Symposium on Electromagnetic Launch Technology, 2012A wide flux weakening speed range permanent magnet synchronous motor with parted permanent magnet used for spindle was presented. The torque and flux weakening performance of three motors with different permanent magnet in rotor are compared. The rotor shape is optimized to reduce third harmonic wave and ripple of no-load torque.
Chunyan Li, Baoquan Kou
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An integrated CAPP system for parts machined on single spindle Swiss-type automatics
Computers in Industry, 1990Abstract This paper outlines the development of an expert system based integrated CAPP system for parts machined on single spindle Swiss-type automatics (SSSA). The reason for selecting parts fabricated on SSSA is that an SSSA can be considered as a mini-integrated manufacturing system which performs various machining operations and permits complete ...
Shan, X.H., Nee, A.Y.C., Poo, A.N.
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Journal of Clinical Pathology, 2010
Melanocytic lesions show great morphological diversity in their architecture and the cytomorphological appearance of their composite cells. Whereas functional melanocytes show a dendritic cytomorphology and territorial isolation, lesional nevomelanocytes and melanoma cells typically show epithelioid, spindled or mixed cytomorphologies, and a range of ...
Shachar, Sade +2 more
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Melanocytic lesions show great morphological diversity in their architecture and the cytomorphological appearance of their composite cells. Whereas functional melanocytes show a dendritic cytomorphology and territorial isolation, lesional nevomelanocytes and melanoma cells typically show epithelioid, spindled or mixed cytomorphologies, and a range of ...
Shachar, Sade +2 more
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An Integrated Approach Toward the Dynamic Analysis of High-Speed Spindles: Part I—System Model
Journal of Vibration and Acoustics, 1993Experimental evidence (Shin, 1992) has shown that the natural frequencies of high-speed spindles with angular contact ball bearings decrease with increasing rotational speed. A recent study (Wang et al., 1991) illustrated that this phenomenon is caused by stiffness change of the bearings.
C. H. Chen, K. W. Wang, Y. C. Shin
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2020
Machine spindle dynamic characteristics are precisely related to the operation and stability of the machining process. The finite element analysis (FEA) has been used to find out the dynamic behavior of spindle-bearing system. The unbalance response of the vertical machining center (VMC) spindle system at the cutting tool due to thrust force is ...
Gireesha R. Chalageri +2 more
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Machine spindle dynamic characteristics are precisely related to the operation and stability of the machining process. The finite element analysis (FEA) has been used to find out the dynamic behavior of spindle-bearing system. The unbalance response of the vertical machining center (VMC) spindle system at the cutting tool due to thrust force is ...
Gireesha R. Chalageri +2 more
openaire +1 more source
Discharge characteristics of spindle receptors located in different parts of the cat soleus muscle
Neurophysiology, 1984Discharge characteristics of 48 receptors of passive muscle spindles during gradual stretching of the soleus muscle were studied in anesthetized cats. The position of the receptor was determined by electrical stimulation of the muscle surface, by pressure on the muscle, by stretching of individual bundles of fibers, by intramuscular electrical ...
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Design and deformation analysis of multi-spindle drilling head parts
AIP Conference Proceedings, 2022S. Arun Kumar +4 more
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