Study of Optimal Cam Design of Dual-Axle Spring-Loaded Camming Device.

Area of Science:

• Mechanical Engineering
• Materials Science
• Sports Engineering

Background:

• Spring-loaded camming devices (SLCDs), or
• friends
• , are crucial for climber safety, preventing falls by expanding within rock cracks.
• Current SLCD designs have potential for weight reduction, particularly in the internal cam shape, without compromising structural integrity.
• The dual-axle SLCD configuration offers opportunities for design optimization.

Purpose of the Study:

• To optimize the internal cam shape of dual-axle SLCDs to improve the weight/stiffness trade-off.
• To develop computational models for analyzing and refining SLCD cam geometry.
• To ensure new designs meet practical industry requirements for commercial application.

Main Methods:

• Two computational models of a dual-axle SLCD cam were created.
• Multi-step topology optimization (TOP) was applied to the internal cam shape.
• Parametric curves were used to smoothen the optimized cam geometry.
• The load-bearing capacity of the redesigned cam was analyzed.

Main Results:

• Topology optimization identified areas for material reduction in the cam's internal structure.
• The optimized cam design demonstrated a favorable weight/stiffness ratio compared to conventional designs.
• Smoothened cam geometry using parametric curves facilitated analysis and potential manufacturing.

Conclusions:

• The internal cam shape of dual-axle SLCDs can be significantly optimized for weight reduction while preserving stiffness.
• Computational topology optimization is an effective method for improving the design of climbing safety equipment.
• The findings provide a basis for developing lighter and potentially more efficient commercial SLCDs.