Golf Club Head Mass Layout for CG and MOI Control
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Solution Overview
Problem
Existing golf club heads face challenges in optimizing the center of gravity and moment of inertia, which affect the trajectory and spin rate of the golf ball, due to limitations in material composition and design.
Innovation Solution
The golf club heads are designed with integrated face portions, back grooves, and internal/external ports to enhance deflection and distribute mass, utilizing materials like steel and titanium-based alloys, and incorporating port sleeves to shift mass for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple materials are used to manufacture golf club heads, then the center of gravity and moment of inertia can be optimized, but the device complexity increases
Solution Approach 1:
The golf club head is divided into multiple material zones with different properties. The face portion uses a first material while the back portion uses a second material, allowing independent optimization of each region's mechanical properties and mass distribution to achieve desired center of gravity and moment of inertia characteristics
Solution Approach 2:
The patent employs composite material construction by combining two or more different materials in specific configurations within the club head. This allows the designer to leverage the advantageous properties of each material (such as density, strength, elasticity) to optimize performance parameters while managing the complexity through systematic material selection
2Reliability
If mass is distributed to optimize center of gravity, then trajectory control improves, but the total mass may need to be altered
Solution Approach 1:
Different regions of the golf club head are assigned different material properties and mass characteristics. The face portion and back portion use different materials with specific density and elastic modulus values, creating localized mass distribution that optimizes center of gravity position and moment of inertia while maintaining overall mass within acceptable ranges
Solution Approach 2:
The patent systematically varies material parameters (density, elastic modulus, Poisson's ratio) across different portions of the club head to achieve desired mass distribution. By changing these material parameters locally, the design optimizes trajectory control through center of gravity positioning without requiring significant changes to total mass
3Speed
If face portion thickness is reduced to enhance rebounding effect, then ball speed increases, but the strength and durability decrease
Solution Approach 1:
The face portion is constructed from a material with high elastic modulus and favorable strength-to-density ratio, allowing reduced thickness while maintaining structural integrity. The composite construction with the back portion material provides additional structural support, enabling the face to be thinner for enhanced rebounding effect without compromising strength or durability
Solution Approach 2:
The face portion uses a specifically selected material with optimized mechanical properties (high elastic modulus, appropriate density) that enables thin construction. This localized material selection allows the face to achieve enhanced rebounding characteristics through reduced thickness while the material's inherent strength properties maintain durability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances the rebounding effect, increasing ball speed and carry distance while optimizing the center of gravity and moment of inertia without significantly altering the total mass, thereby improving golf performance.
Implementation Method 1
incorporating port sleeves to shift mass for improved performance
Implementation Method 2
The design enhances the rebounding effect, increasing ball speed and carry distance
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 having an interior cavity with a maximum cavity width, a filler material in the interior cavity, a body mass portion integral with the body portion and including a cavity portion having an opening to the interior cavity, a first mass portion and a second mass portion coupled to the hollow body portion, and a third mass portion in the cavity portion. The third mass has a shape different from each of the first mass portion and the second mass portion. The maximum cavity width is proximate to the sole portion edge of the body portion and at or proximate to the body mass portion. Other examples and embodiments may be described and claimed.