Multi-Material Golf Club Heads for CG and MOI Tuning
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Solution Overview
Problem
Existing golf club heads face challenges in optimizing the center of gravity (CG) and moment of inertia (MOI) for desired ball trajectory and spin rates, limiting performance enhancements.
Innovation Solution
The golf club heads are manufactured using multiple materials and structural designs, including a hollow body with internal cavities filled with different filler materials and strategically positioned mass portions, to optimize CG and MOI, and incorporate a thin face portion with grooves for enhanced flexibility and energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple materials are used to manufacture golf club heads, then the center of gravity and moment of inertia can be optimized for desired ball trajectory and spin rates, but the device complexity increases
Solution Approach 1:
The golf club head is divided into multiple material zones: a face portion made of a first material and a body portion made of a second material. This segmentation allows independent optimization of each region's properties to achieve desired center of gravity and moment of inertia characteristics while maintaining manufacturability through defined material boundaries.
Solution Approach 2:
Different materials are assigned to different regions of the golf club head based on local performance requirements. The face portion uses a material optimized for ball contact properties, while the body portion uses a material optimized for weight distribution and structural characteristics, enabling localized property optimization without requiring complex multi-material construction throughout the entire head.
2Use of energy by moving object
If a thin face portion is used, then flexibility and energy transfer are enhanced, but structural integrity may be compromised
Solution Approach 1:
The face portion is constructed from a material that provides both the required thinness for flexibility and sufficient strength for structural integrity. The composite construction of the entire club head, with the face portion integrated into a reinforced body portion, allows the thin face to achieve enhanced energy transfer while the overall structure maintains necessary strength through the multi-material construction.
Data Source
AI summary
Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head includes a body portion, an interior cavity portion, and a face portion, which includes a back surface with a back surface perimeter portion, a first recess portion, a second recess portion, a ridge portion separating the first recess portion and the second recess portion, and a wall portion defining an enclosure with an interior space. A first filler material at least partially fills the interior cavity portion and a second filler material at least partially fills the interior space of the wall portion. Other examples and embodiments may be described and claimed.