Results 121 to 130 of about 33,140 (265)

COMPUTER SIMULATION OF VIBRATION SURVEILLANCE OF DISCRETELY IDEALISED MECHANICAL SYSTEMS. PART II: TOOL-WORKPIECE VIBRATION IN A NON-STATIONARY MODEL OF THE CUTTING PROCESS

open access: yesTASK Quarterly, 2004
The problems of tool-workpiece vibration surveillance during machining have been researched. The object of investigation has been analysed, and cutting dynamics and calculation model creation described.
KRZYSZTOF J. KALIŃSKI
doaj  

Bearing Loads Study for High-Speed Motorized Spindle

open access: yes, 2011
Due to high rotation accuracy, high dynamic stiffness, high vibration damping and long life, high-speed spindles supported by hydrodynamic and hydrostatic hybrid bearings are widely applied in the field of high-speed precision machine tools.
Dong Man Yu   +3 more
core   +1 more source

Towards Advanced Intelligent and Perceptive Soft Grippers

open access: yesAdvanced Intelligent Systems, EarlyView.
Implementing soft yet strong and intelligent soft grippers request innovative and creative solutions in designing soft bodies and seamlessly integrating actuated systems with hierarchical sensing. This review systematically analyses soft grippers with a deep understanding of core components, from fundamental design principles to actuation and sensing ...
Haneul Kim   +4 more
wiley   +1 more source

Thermomechanical modeling of motorized spindle systems for high-speed milling

open access: yes, 1997
Motorized high speed spindles with angular contact ball bearings and minimum oil lubrication may suddenly fail due to thermal problems, for which the exact reason is unknown.
Bossmanns, Bernd
core  

Thermal Black‐Infused Polyurethane Rigid Foams: Novel Formulations Toward Higher‐Performance and More Sustainable Insulation

open access: yesJournal of Applied Polymer Science, EarlyView.
Thermal black improves polyurethane foam structure and stability. It helps the foam rise smoothly while promoting the formation of smaller, more uniform cells. The foam keeps its strength and insulation performance while reducing shrinkage. Its clean production and easy processing make it a sustainable, cost‐effective option for high‐performance ...
Mihaela Mihai   +3 more
wiley   +1 more source

基于机床主轴传动系统的线图模型研究

open access: yesJixie chuandong, 2010
The situation about the dynamic performances of spindle of machine tool is summarized.Then,the principle of machine tool spindle transmission is analyzed and predigested.The physical model about it is got and the elementary theory of linear graph is ...
周丹
doaj  

A Direct Reading Spindle Speed Meter

open access: yes, 1976
113-114A simple, inexpensive and direct-reading spindle speed meter has been designed and fabricated. The accuracy and reproducibility of measurements made with the meter are comparable to those obtained with the stroboscope.
Kalyanaraman, A. R., Sridhar, U.
core  

Revisiting paravertebral muscles in European rabbits (Oryctolagus cuniculus) and European brown hares (Lepus europaeus) (Leporidae; Lagomorpha)

open access: yesThe Anatomical Record, EarlyView.
Abstract Domesticated European rabbits (Oryctolagus cuniculus) have long been chosen as laboratory model organisms. Despite this, there has been no definitive study of the vertebral musculature of wild rabbits. Relevant descriptions of well‐studied veterinary model mammals (such as dogs) are generally applicable, but not appropriate for a species ...
Nuttakorn Taewcharoen   +3 more
wiley   +1 more source

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

open access: yesThe Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano   +3 more
wiley   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

open access: yesThe Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza   +3 more
wiley   +1 more source

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