Golf Club Head Density Ratio for Lower CG and Higher MOI
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Solution Overview
Problem
Existing golf club head designs face challenges in uniformly distributing weight to optimize center of gravity position and increase club head moment of inertia, often requiring complex manufacturing processes and affecting aerodynamics due to the use of weight ports or inserts.
Innovation Solution
A golf club head design featuring a high density body and a low density face, with a specific gravity ratio greater than or equal to 1.7, positions the center of gravity closer to the bottom, maximizing weight distribution away from the center and increasing moment of inertia, thereby simplifying manufacturing and enhancing performance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If weight ports or inserts are used to optimize center of gravity position and increase moment of inertia, then club head performance is improved, but manufacturing complexity increases and aerodynamics are affected
Solution Approach 1:
The patent changes the density parameter of the club head body material to achieve weight optimization. By using a high density material (specific gravity ≥1.7) for the body, the design achieves proper center of gravity positioning and increased moment of inertia without requiring additional weight ports or inserts, thus simplifying manufacturing while maintaining performance
Solution Approach 2:
The patent applies local quality by using a high density material specifically for the club head body where weight concentration is needed, while keeping the face material separate. This localized density adjustment optimizes the center of gravity position and moment of inertia without affecting other parts of the club head, avoiding the need for complex assembly of multiple components
2Reliability
If weight ports are used to distribute weight uniformly, then center of gravity position is optimized, but overall aerodynamics of the club head are affected
Solution Approach 1:
The patent changes the density parameter of the body material to achieve uniform weight distribution without creating physical openings. By using a high density material throughout the body, the center of gravity is properly positioned while maintaining the club head's aerodynamic shell intact, thus avoiding the aerodynamic drag that would result from weight ports
3Reliability
If high density material is used for the body, then moment of inertia increases and center of gravity positions optimally, but material handling becomes more difficult
Solution Approach 1:
The patent changes the density parameter by selecting high density materials with specific gravity ≥1.7, which naturally provide the required moment of inertia and center of gravity positioning. The design accepts the trade-off of using specialized high density materials that may require adjusted handling procedures, but eliminates the need for complex multi-component assembly, overall simplifying the manufacturing process
Data Source
AI summary
Described herein are embodiments of a golf club head, the golf club head comprising a body and a strike face. The body comprises a first material having a first specific gravity and the strike face comprises a second material having a second specific gravity. A ratio of the first specific gravity to the second specific gravity is greater than or equal to 1.7. The body and the strike face are coupled together by welding. The body further defines a cavity.