Journal ArticleDOI
A Computational Approach to Profile Generation of Planar Cam Mechanisms
Yuhua Zhang,Joong-Ho Shin +1 more
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TLDR
In this article, a relative motion method (RMM) is proposed for designing the shape of the disk cam, which uses the relative velocity and the relative acceleration of a follower respect to a cam to discover the profile coordinate, the pressure angle and the radius of curvature on the cam.Abstract:
A new approach, called a Relative Motion Method (RMM), is proposed for designing the shape of the disk cam, which uses the relative velocity and the relative acceleration of a follower respect to a cam to discover the profile coordinate, the pressure angle and the radius of curvature on the cam. It is characterized by the procedures of automatic derivation and solution with computers and the suitability not only for general disk cams with different kinds of follower, such as sharp edge follower, roller follower flat-faced follower, and so on, but also for the double-disk conjugate cams, single-disk conjugate cams and roller gear conjugate cams. A program for design automation of shape of the disk cam and the kinematics simulation of this kind of mechanism has been developed using the proposed approach with C++ language. Finally, an example is given.read more
Citations
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Generalized transmission index and transmission quality for spatial linkages
Chao Chen,Jorge Angeles +1 more
TL;DR: In this paper, the authors proposed a generalized transmission index for spatial mechanisms based on the virtual coefficient between the transmission wrench screw and the output twist screw, which is applicable to single-loop spatial linkages, with fixed output and single or multiple degrees of freedom.
Journal ArticleDOI
Power harvesting systems design for railroad safety
TL;DR: In this paper, the authors discuss the design and development of several power harvesting devices capable of scavenging power from railway tracks during the passage of trains, which is a promising approach compared with the cost of installing electrical power lines or the lack of robust solar and/or wind power solutions.
Journal ArticleDOI
Synthesis of indexing mechanisms with non-circular gears
TL;DR: In this article, the gear ratios and pitch surfaces of non-circular gear are synthetized using the indexing motion laws and three types of noncircular planetary gear trains.
Journal ArticleDOI
A Computational Approach for Cam Size Optimization of Disc Cam-Follower Mechanisms With Translating Roller Followers
TL;DR: In this article, the authors present a computational approach for design optimization of disc cam mechanisms with eccentric translating roller followers with geometric constraints related to the maximum pressure angle and minimum radius of curvature.
Journal ArticleDOI
Meshing Analysis of the Planetary Indexing Cam Mechanisms
TL;DR: In this paper, the authors investigated the effect of the loss of contacts between a few rollers and cam profile on the transmission of the planetary indexing cam. And they showed that the loss does not hamper the rightness of motion transfer in the mechanism if the design parameters are well selected.
References
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Journal ArticleDOI
A General Approach to the Determination of Planar and Spatial Cam Profiles
Der Min Tsay,Hsien Min Wei +1 more
TL;DR: In this paper, a planar and spatial cam profile is defined as the envelope of its follower surfaces represented in a parametric form in different relative positions of the cam and the follower.