Abstract
Changing ratio gears are noncircular. It means that if they are combined with a conventional cylindrical gear a changing axis distance will be given. Changing axis distance can generate a lot of difficulties and additional costs in the construction. Our goal was to create changing ratio gears that have cylindrical geometry and interlock with conventional cylindrical gears at a constant axis distance. This can be achieved by applying continuously changing profile shift. Profile shift modifies the diameter of the gears, however it does not have any effect on the ratio; regardless if that is constant or changing. The point of our calculation is that some gears with noncircular rolling curves can have circular pitch curve with the help of changing profile shift.
Highlights
Changing ratio noncircular gears are rare machine parts; the application of these elements offers many possibilities
In this article we introduce a method that is suitable for creating cylindrical gears with changing ratio with the help of a continuously changing profile shift
These special gears can interlock with a conventional cylindrical gear at a constant axis distance
Summary
Changing ratio noncircular gears are rare machine parts; the application of these elements offers many possibilities. There can be a lot more application These special gears can have opened or closed-loop pitch curves and the axis distance can be either constant or changing. Noncircular gears with constant axis distance and closed pitch curves are generally used to create or eliminate alternating angular velocities or torques. Rearranging Eq (3), the first rolling curve in polar coordinate system can be defined as Eq (4) Applying these calculations we created a pair of noncircular gears that eliminates the angular velocity alternation of a 45° deflected cardan joint (Fig. 3). This could be one of the many applications of this kind of gears [8]. C) Fig. 1 Application of noncircular gears: a) kinematic mockup of a special steering mechanism [3], b) Weight balancing mechanism [8], c) Water flow measure equipement [10]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
