Golf Club Head Scoreline Recess for End Mill Wear Reduction
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Solution Overview
Problem
Existing methods for forming scorelines on golf club heads using end mills often result in premature wear and damage due to high loads imposed on the cutting tool, which can be mitigated by reducing the load but at the cost of prolonged cutting times, affecting productivity.
Innovation Solution
The formation of recessed portions at the starting points of scorelines, which are deeper than the scorelines themselves, allows for the insertion of an end mill with a smaller distal end, reducing the load and preventing wear, while enabling efficient cutting by moving the end mill relative to the golf club head blank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the end mill is pressed against the face surface to form scorelines, then the scorelines can be formed with flat bottom surfaces, but a large load is imposed on the distal end of the end mill causing quick wear or damage
Solution Approach 1:
A recessed portion is formed in advance at the position where scorelines are to be formed. The distal end of the end mill is inserted into this pre-formed recess, allowing the cutting operation to start from a position that does not require pressing against the face surface, thereby preventing load concentration and tool wear while still achieving flat bottom surfaces.
2Reliability
If the end mill is pressed slowly against the face surface to avoid wear, then the end mill durability is maintained, but the cutting time is prolonged degrading productivity
Solution Approach 1:
By pre-forming the recessed portion, the end mill can be inserted directly without the need for slow pressing operation. This eliminates the trade-off between pressing speed and tool wear, allowing rapid cutting while maintaining tool durability.
3Productivity
If the end mill is pressed quickly against the face surface to maintain productivity, then the cutting time is reduced, but the end mill may quickly wear or damage
Solution Approach 1:
The pre-formed recessed portion allows the end mill to be inserted quickly without imposing load on the tool, enabling fast cutting operations while preserving end mill durability. The recess eliminates the need for pressing regardless of speed.
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
This method allows for the efficient and quick formation of scorelines with reduced end mill wear and damage, enhancing manufacturing productivity by eliminating the need for pressing the end mill against the face surface, thus maintaining tool integrity and shortening the cutting process.
Implementation Method 1
the spindle 4 is rotated to move the golf club head 1 and cutting tool 5 relative to each other in the direction (X-direction) in which scorelines are formed, thereby cutting the face surface so as to form groove-shaped scorelines in it
Data Source
AI summary
This invention provides a golf club head including a plurality of scorelines formed in its face surface and extending in the toe-to-heel direction. This golf club head includes a recessed portion for the cutting start of each scoreline, which is formed at one end or each of both ends of the scoreline in the longitudinal direction at a depth equal to or larger than that of the scoreline.