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Keywords: gears
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Journal Articles
Uncertainty Considerations in the Dynamic Loading and Failure of Spur Gear Pairs
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Technical Briefs
J. Mech. Des. August 2013, 135(8): 084501.
Paper No: MD-12-1439
Published Online: July 20, 2013
...Fisseha M. Alemayehu; Stephen Ekwaro-Osire Gears and gear systems, like any other mechanical system, are subjected to design parameter, and loading uncertainties emanating from inherent randomness, manufacturing, and assembly errors. The traditional deterministic approach to the design...
Journal Articles
On the Identification of Machine Settings for Gear Surface Topography Corrections (DETC2011-47727)
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. April 2012, 134(4): 041004.
Published Online: March 19, 2012
...Marco Gabiccini; Alessio Artoni; Massimo Guiggiani In this paper, we set out to investigate the performances of some algorithms proposed in the gear literature for identifying the machine-tool settings required to obtain predesigned gear tooth surface topographies, or needed to compensate for flank...
Journal Articles
Design of Rotor for Internal Gear Pump Using Cycloid and Circular-Arc Curves
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. January 2012, 134(1): 011005.
Published Online: January 4, 2012
...T. H. Choi; M. S. Kim; G. S. Lee; S. Y. Jung; J. H. Bae; C. Kim In the case of internal gear pumps, the eccentricity of the outer rotor, which resembles a circular lobe, must be limited to a certain value in order to avoid the formation of cusps and loops; furthermore, the tip width of the inner...
Journal Articles
A Note on Flow Regimes and Churning Loss Modeling
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. December 2011, 133(12): 121009.
Published Online: December 9, 2011
... formulae whose validity depends on two different flow regimes characterized via a critical Reynolds number. Based on some new measurements for transient operating conditions, it has been found that the separation in two regimes may be not accurate enough for wide-faced gears and high temperatures...
Journal Articles
Multi-Objective Ease-Off Optimization of Hypoid Gears for Their Efficiency, Noise, and Durability Performances
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. December 2011, 133(12): 121007.
Published Online: December 9, 2011
...Alessio Artoni; Marco Gabiccini; Massimo Guiggiani; Ahmet Kahraman Microgeometry optimization has become an important phase of gear design that can remarkably enhance gear performance. For spiral bevel and hypoid gears, microgeometry is typically represented by ease-off topography. The optimal ease...
Journal Articles
Generation of Hypoid Gears on CNC Hypoid Generator
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. December 2011, 133(12): 121003.
Published Online: December 9, 2011
... amplitudes of a hypoid gear pair. The new CNC hypoid generators have made it possible to perform this nonlinear correction motions for the cutting of the face-milled hypoid gears. An algorithm is developed for the execution of motions on the CNC hypoid generator for the generation of face-milled hypoid gear...
Journal Articles
Contact Characteristics of Recess Action Worm Gear Drives With Double-Depth Teeth
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. November 2011, 133(11): 111006.
Published Online: November 11, 2011
...Wei-Liang Chen; Chung-Biau Tsay Based on the previously developed mathematical model of a series of recess action (RA) worm gear drive (i.e., semi RA, full RA, and standard proportional tooth types) with double-depth teeth, the tooth contact analysis (TCA) technique is utilized to investigate...
Topics:
Worm gears
Journal Articles
High-Pressure Angle Gears: Comparison to Typical Gear Designs
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Technical Briefs
J. Mech. Des. November 2011, 133(11): 114501.
Published Online: November 11, 2011
...Robert F. Handschuh; Andrew J. Zakrajsek A preliminary study has been completed to determine the feasibility of using high-pressure angle gears in aeronautic and space applications. Tests were conducted in the NASA GRC Spur Gear Test Facility at speeds up to 10,000 rpm and 73 N m (648 in. lb...
Journal Articles
Axial Thrust Force of Compound Planetary Spur Gear Set
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. September 2011, 133(9): 091004.
Published Online: September 9, 2011
...Yang Fuchun; Zhou Jutao; Zhou Xiaojun; Zhu Hongqing Planetary gears are widely used in automotive and aerospace applications. Traditionally, automatic transmissions have four forward speeds, which can be achieved by using two planes of single pinion (sun-pinion-ring) planetary gear sets. Recently...
Journal Articles
Optimization of Face Cone Element for Spiral Bevel and Hypoid Gears
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. September 2011, 133(9): 091002.
Published Online: September 7, 2011
...Qi Fan In the blank design of spiral bevel and hypoid gears, the face cone is defined as an imaginary cone tangent to the tops of the teeth. Traditionally, the face cone element or generatrix is a straight line. On the other hand, the tooth root lines, which are traced by the blade tips...
Journal Articles
Power Flow Analysis of Compound Epicyclic Gear Transmission: Simpson Gear Train
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Technical Briefs
J. Mech. Des. September 2011, 133(9): 094502.
Published Online: September 7, 2011
...Chao Chen An analytical expression for the total efficiency of the Simpson gear train is derived using virtual power analysis. This expression is consistent with intuition when the total efficiency is 100%. Power flow analysis shows that there are no internal power circulation and amplification...
Journal Articles
Spiral Bevel Gear Dynamic Contact and Tooth Impact Analysis
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Technical Briefs
J. Mech. Des. August 2011, 133(8): 084501.
Published Online: August 10, 2011
...Pei-Yu Wang; Sih-Ci Fan; Zi-Gui Huang A significant portion of the research on spiral bevel gear focused on contact stress and assembly flexibility (V and H check) values, while only a few studies investigated the relationship between transmission errors and rotational speed. This paper addresses...
Journal Articles
A New Design of a Two-Stage Cycloidal Speed Reducer
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Design Innovations
J. Mech. Des. August 2011, 133(8): 085001.
Published Online: August 8, 2011
... was also realized, using the finite elements method (FEM), for the most critical cases of conjugate gear action (one, two, or three pairs of teeth in contact). The results showed that cycloid discs are rather uniformly loaded, justifying the design solution presented here. Experimental analysis...
Journal Articles
An Investigation of Root Stresses of Hypoid Gears with Misalignments
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. July 2011, 133(7): 071006.
Published Online: July 8, 2011
...M. A. Hotait; A. Kahraman; T. Nishino In this study, the impact of misalignments on root stresses of hypoid gear sets is investigated experimentally and theoretically. An experimental set-up designed to allow operation of a hypoid gear pair under loaded quasi-static conditions with various types...
Journal Articles
Study on Deformed Limacon Gear and Motion Optimization of Its Serial Mechanism
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. June 2011, 133(6): 061004.
Published Online: June 15, 2011
...Liu Dawei; Ren Tingzhi In order to obtain the nonsinusoidal oscillation wave of continuous caster molds, a vibration generator comprised of an eccentric shaft and a new kind of noncircular gears called deformed limacon gear pair is proposed. The pitch curve equations of limacon gears are described...
Journal Articles
The Instantaneous Efficiency of Epicyclic Gears in Flight Control Systems
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. May 2011, 133(5): 051008.
Published Online: June 8, 2011
...Anngwo Wang; Seth Gitnes; Lotfi El-Bayoumy The instantaneous efficiency of an epicyclic gear rotary actuator is an important factor in sizing flight control systems where compound epicyclic gear trains are typically used. The efficiency variation can be smooth or fluctuating depending...
Journal Articles
Kinematic Effect of the Compliant Cup in Harmonic Drives
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. May 2011, 133(5): 051004.
Published Online: June 6, 2011
... and demonstrates that the conjugating tooth profile should be a three-dimensional surface because of the cup deformation. The use of spur gears on both flexspline and circular spline will cause excessive interference and excessive deformation will become necessary to overcome the interference. Since no-load...
Journal Articles
Some Analytical Results on Transmission Errors in Narrow-Faced Spur and Helical Gears: Influence of Profile Modifications
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. March 2011, 133(3): 031010.
Published Online: March 10, 2011
...P. Velex; J. Bruyère; D. R. Houser Some theoretical developments are presented, which lead to approximate analytical results on quasi-static transmission errors valid for low and high contact ratio spur and helical gears. Based on a multidegree-of-freedom gear model, a unique scalar equation...
Journal Articles
Theoretic Study of Efficiency of Two-DOFs of Epicyclic Gear Transmission via Virtual Power
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. March 2011, 133(3): 031007.
Published Online: March 1, 2011
...Chao Chen; Teck Teh Liang Epicyclic gear train is a fundamental form of mechanical transmission with broad applications. Efficiency study of these trains is critical to design, optimization, and operation. It is known that the efficiencies of these systems are highly related to the internal power...
Journal Articles
Synthesis of the Pitch Cones of N -Lobed Elliptical Bevel Gears
Available to Purchase
Journal:
Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. March 2011, 133(3): 031002.
Published Online: February 22, 2011
...Giorgio Figliolini; Jorge Angeles A general formulation of the synthesis of the pitch cones of a pair of N -lobed elliptical bevel gears and the pitch surface of its conjugate crown-rack is proposed. In particular, two pitch cones and the pitch surface of their crown-rack are obtained for any...
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