Golf Club Head Miter Joint for Thin Titanium Face Brazing
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Solution Overview
Problem
Current brazing methods for golf club heads, particularly for joining dissimilar materials like titanium and steel, face challenges such as complexity, cost, size limitations, and durability issues, especially in highly stressed regions, and require a more efficient and cost-effective solution.
Innovation Solution
A method using a nickel-based or copper-based filler material in a vacuum brazing furnace to create a miter joint with angles between 10 to 45 degrees, specifically for attaching a thin titanium face plate to a steel body, reducing machining complexity and improving joint strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a tongue-and-groove joint is used for brazing a face plate to a club body, then the joint strength is improved, but the manufacturing complexity and cost increase due to requiring precise fitment with high tolerances and tight corners
Solution Approach 1:
The joint is divided into two functional segments: a scarf joint portion that provides structural strength and a lap joint portion that provides alignment and brazing accessibility. This segmentation allows each portion to be optimized for its specific function rather than requiring the entire joint to satisfy all requirements simultaneously.
Solution Approach 2:
The joint transitions from a two-dimensional planar interface to a three-dimensional angled interface. The scarf portion is configured at an angle (e.g., 45 degrees) relative to the face plate, creating a wedgelike structure that distributes stresses more effectively and provides mechanical interlocking in addition to brazing bonding.
2Strength
If a tongue-and-groove joint is used, then the joint strength is improved, but the manufacturing time and cost increase due to requiring tight corners and precise fitment
Solution Approach 1:
The joint is divided into two functional segments: a scarf joint portion that provides structural strength and a lap joint portion that provides alignment and brazing accessibility. This segmentation allows each portion to be optimized for its specific function rather than requiring the entire joint to satisfy all requirements simultaneously.
Solution Approach 2:
The joint transitions from a two-dimensional planar interface to a three-dimensional angled interface. The scarf portion is configured at an angle (e.g., 45 degrees) relative to the face plate, creating a wedgelike structure that distributes stresses more effectively and provides mechanical interlocking in addition to brazing bonding.
3Strength
If a tongue-and-groove joint is used, then the joint strength is improved, but the volume and weight increase making it impractical in thinner cross-sectional locations
Solution Approach 1:
The joint is divided into two functional segments: a scarf joint portion that provides structural strength and a lap joint portion that provides alignment and brazing accessibility. This segmentation allows each portion to be optimized for its specific function rather than requiring the entire joint to satisfy all requirements simultaneously.
Solution Approach 2:
The joint transitions from a two-dimensional planar interface to a three-dimensional angled interface. The scarf portion is configured at an angle (e.g., 45 degrees) relative to the face plate, creating a wedgelike structure that distributes stresses more effectively and provides mechanical interlocking in addition to brazing bonding.
4Strength
If a tongue-and-groove joint with tight corners is used, then the joint strength is improved, but stress concentrations increase in highly stressed regions
Solution Approach 1:
Instead of creating tight corners that concentrate stress, the joint uses a scarf configuration with a gradual angle (e.g., 45 degrees) that distributes stress evenly across the joint interface. The lap portion provides a transition zone that eliminates sharp geometric discontinuities.
Solution Approach 2:
The joint transitions from a two-dimensional planar interface to a three-dimensional angled interface. The scarf portion is configured at an angle (e.g., 45 degrees) relative to the face plate, creating a wedgelike structure that distributes stresses more effectively and provides mechanical interlocking in addition to brazing bonding.
5Strength
If a larger width joint is used, then the joint strength is improved, but the locations where the joint can be implemented are limited
Solution Approach 1:
The joint is divided into two functional segments: a scarf joint portion that provides structural strength and a lap joint portion that provides alignment and brazing accessibility. This segmentation allows each portion to be optimized for its specific function rather than requiring the entire joint to satisfy all requirements simultaneously.
Solution Approach 2:
The joint transitions from a two-dimensional planar interface to a three-dimensional angled interface. The scarf portion is configured at an angle (e.g., 45 degrees) relative to the face plate, creating a wedgelike structure that distributes stresses more effectively and provides mechanical interlocking in addition to brazing bonding.
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 method achieves a stronger, more durable joint with reduced manufacturing costs and increased flexibility in placement, especially in smaller cross-sectional areas, while minimizing stress concentrations and improving heat management.
Implementation Method 1
A method using a nickel-based or copper-based filler material in a vacuum brazing furnace to create a miter joint with angles between 10 to 45 degrees, specifically for attaching a thin titanium face plate to a steel body
Data Source
AI summary
A golf club head with a mitered joint for joining components of dissimilar materials is disclosed herein. The golf club head has a body with an internal edge defining a recess, and a face component having an internal edge. The face component is disposed over the recess. The internal edge of the body and the internal edge of the face have an angle ranging from 10 degrees to 45 degrees.