Golf Club Head Internal Weight Composite for Precise CG Tuning
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Solution Overview
Problem
Golf club manufacturers face challenges in fine-tuning performance characteristics, particularly in adjusting the center of gravity (CG), due to manufacturing variances and the difficulty in incorporating lightweight materials like ceramics, aluminum, or carbon fibers, which often require external weights that can be unsightly, prone to loosening, and limit performance tuning.
Innovation Solution
A method of manufacturing a golf club head that involves introducing a composite of a chemical adhesive and weight constituent into the club head's cavity, using a hot melt adhesive with temperature-variable viscosity and magnetic materials, allowing for precise positioning and securement within the club head, even after assembly, through manipulations like heat application and magnetic forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If external weights are used to adjust center of gravity, then performance tuning is achieved, but the weights are unsightly, prone to loosening, and limit performance tuning
Solution Approach 1:
The weight constituent is nested within the adhesive constituent, forming a composite material that is injected into the cavity. This internal embedding eliminates external weights, preventing loosening while maintaining precise center of gravity adjustment capability through controlled placement of the composite material.
Solution Approach 2:
The invention uses a composite material consisting of adhesive constituent and weight constituent. This composite approach combines the binding properties of adhesive with the mass properties of weight material, enabling internal weight integration that is both secure and precisely positionable for center of gravity tuning.
2Manufacturing precision
If lightweight materials like ceramics, aluminum, or carbon fibers are incorporated, then manufacturing variances are reduced, but the materials require external weights that limit performance tuning
Solution Approach 1:
The composite material allows for localized placement of weight constituents within specific regions of the cavity. This enables precise control over center of gravity position and moment of inertia characteristics, providing performance tuning flexibility while maintaining manufacturing consistency through controlled composite injection.
Solution Approach 2:
The invention enables adjustment of physical parameters such as center of gravity position, moment of inertia, and weight distribution by varying the amount, location, and distribution of the weight constituent within the adhesive matrix. This provides versatile performance tuning while maintaining manufacturing precision.
3Manufacturing precision
If composite is introduced when adhesive is in flowable state, then precise positioning is enabled, but temperature control is required
Solution Approach 1:
The adhesive constituent undergoes phase transition from liquid (flowable) to solid state. By controlling the temperature to maintain the adhesive in a flowable state during injection, the composite can be precisely positioned within the cavity. Subsequent cooling causes the adhesive to solidify, locking the weight constituent in the desired location for center of gravity adjustment.
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
Enables precise adjustment of the club head's CG without external weights, improving performance characteristics by securely embedding weighted materials internally, capturing manufacturing debris, and enhancing the club's aerodynamics and stability.
Implementation Method 1
using a hot melt adhesive with temperature-variable viscosity
Implementation Method 2
manipulating the composite includes applying a magnetic force to the composite
Implementation Method 3
manipulating the composite includes applying a heat energy to the composite
Data Source
AI summary
A golf club head is manufactured to form a cavity where the striking face of the golf club is secured to the sole and upper portion of the golf club head. A weighted composite is manipulated into a predetermined location within the cavity. The composite contains an adhesive which secures the composite within the cavity.