Hi everyone,
I'm a mechanical engineering student currently working on a mechanism modeling assignment, and I've run into a roadblock with this Double Cone-Roller Variable Speed Transmission (CVT).
I need to perform a structural and kinematic analysis based on the attached 2D cross-section diagram, but I'm struggling with the exact execution. Could anyone guide me on how to solve the following 4 specific requirements?
- Rigid Link Grouping: How should I group the components that have no relative motion between each other? What would be the correct functional names for each group based on their purpose and role in this machine's structure? (For example, I am a bit confused about whether the adjustment nut (9), holder (10), and cone roller (11) should be treated as separate links or grouped together due to local degrees of freedom).
- Connectivity Diagram: How do I properly represent the connectivity graph (topology network) showing the relationships and joint interactions between these classified link groups?
- Kinematic Diagram: What is the correct way to draw the 2D kinematic skeleton diagram (structural schematic) of this mechanism using standard symbols for basic joints?
- Operating Principle: Based on the kinematics of the links, how does this entire mechanism function? Specifically, how do the speed adjustment loop and the torque-responsive ball-ramp pressing mechanism at the output work together?
I want to deeply understand the core kinematic principles and constraints behind this machine rather than just copying a flat answer, so any step-by-step breakdowns, explanations, or rough sketches would be incredibly helpful!
Thank you so much in advance for your time and expertise!
u/Educational-Cod-2089 — 19 days ago