Results 21 to 30 of about 20,619 (262)
Effect of backlash on vibration spectrum in gear boxes [PDF]
The Journal of the Acoustical Society of America, 1988 An ideal gear box would produce no vibration at all because all energy would be channeled into the work to be done; but a well-designed gear box will produce low levels of inherent vibration. As the gear teeth wear, however, backlash between meshing teeth increases and this is reflected in an increase in the vibration energy. As the vibration energy is
M. Moustafa +3 more
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Low-Backlash Worm Gears with NiTi Shape Memory Alloys [PDF]
ESOMAT 2009 - 8th European Symposium on Martensitic Transformations, 2009 This paper investigates the use of martensitic Nickel-Titanium within worm gear transmissions in order to reduce the backlash of the gearwheels. In drive technology low-backlash transmissions are demanded. The backlash, adjusted at room temperature, decreases with increasing temperature as a consequence of different thermal expansions of the gear ...
W. Predki, B. Bauer
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Dynamic analysis of spur gear with backlash using ADAMS
Materials Today: Proceedings, 2021 Abstract Gear tooth profile can deviate from its initial design shape and size as a result of increasing service time under time-varying load, introducing external agents like debris, overheating due to friction, wear, and in generally due to other nonlinear factors such as backlash.
Getachew A. Ambaye, Hirpa G. Lemu
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Dynamics of a Gear System with Faults in Meshing Stiffness [PDF]
, 2004 Gear box dynamics is characterised by a periodically changing stiffness. In real gear systems, a backlash also exists that can lead to a loss in contact between the teeth.
Friswell, Michael I., Litak, Grzegorz
core +1 more source
Advances in Solid‐Phase Processing Techniques: Innovations, Applications, and Future Perspectives
Advanced Materials Technologies, EarlyView.Based on practical manufacturing challenges, this review examines advanced solid‐phase processing techniques that overcome the inherent limitations of conventional melting‐based and traditional solid‐phase manufacturing, enabling the production of higher‐performance components at reduced cost through process innovation and improved supply‐chain ...
Tianhao Wang
wiley +1 more source
Gear Backlash Detection and Evaluation Based on Current Characteristic Extraction and Selection
IEEE Access, 2020 Motor Current Signal Analysis (MCSA) is widely used in the monitoring of electric motors, but few researchers applied it in the transmission system because of the fault information loss and aliasing of current signals.
Qichao Yang +3 more
doaj +1 more source
Active vibration control of slewing drives with gear backlash
IOP Conference Series: Materials Science and Engineering, 2021 Abstract Geared transmissions with high reduction ratios are widely utilized in drive technology. Common to these drives is the occurrence of considerable gear backlash. If operating scenarios with repeated reversals of the rotational direction or changing load directions occur, the backlash will be traversed.
M Spiegelhauer, B Schlecht
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Hydraulic drive system prevents backlash [PDF]
, 1965 Hydraulic drive system uses a second drive motor operating at reduced torque. This exerts a relative braking action which eliminates the normal gear train backlash that is intolerable when driving certain heavy ...
Acord, J. D.
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Torque‐Transmitting Architected Metamaterials for Flexible and Extendable Tubular Robotics
Advanced Intelligent Systems, EarlyView.Soft and continuum robots commonly rely on fluid, tendon, or rod‐based power transmissions, to control robotic form and actuation. This study presents an architected structure, based on patterned straight‐line mechanisms, that enables simultaneous bending, extending, and torsionally rigid (BETR) transmission.
Sawyer Thomas, Aman Garg, Jeffery Lipton
wiley +1 more source
Dynamic Analysis of a Fault Planetary Gear System under Nonlinear Parameter Excitation
Shock and Vibration, 2021 In order to facilitate lubrication and avoid the gear stuck due to thermal expansion, there needs to be a gap between the tooth profiles. As a strong nonlinear factor, the backlash will affect the motion state of the planetary gear system.
Jianchao Han +4 more
doaj +1 more source