Extruded golf club head and method of manufacture
a golf club and mold technology, applied in the field of golf club heads, can solve the problems of high cost, laborious forging, and the most expensive way to fabricate a club head, and achieve the effects of less waste of material, less metal, and faster process times
Inactive Publication Date: 2005-11-03
KARSTEN MFG CORP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The present invention is a method of manufacturing golf club heads using an extrusion process. The extruded bar is sliced into a club head blank with positioning holes and then machined into the final configuration. This method results in faster process times, less wasted material, and cost savings over prior art methods. The technical effect of this invention is to provide a more efficient and cost-effective way of manufacturing golf club heads.
Problems solved by technology
This, however, is the most expensive way to fabricate a club head because most of the raw material is wasted in the machining process.
In the lost-wax casting process the build up of the mold takes several days and is labor intensive.
Forging is expensive because of the additional tooling and machine operations necessary to forge the blanks and it can only be carried out on materials that respond well to forging.
As noted hereinbefore, milling is the most expensive method of manufacturing because of the time necessary to mill a solid billet of metal and because of the substantial wasted material.
Method used
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Embodiment Construction
[0019] With reference to FIGS. 1 and 2, a golf club head 10, preferably a golf putter head, comprises a body 12 and a hose1 shank 14 with a boss 16 counterbored for receiving one end of a golf club shaft (not shown). The body 12 has a front face 18, a heel end 20 and a toe end 22. Front face 18 may optionally include a face insert 24 secured within a recess in face 18. Golf club head 10 is fully machined from a metal material such as steel, titanium, or preferably an aluminum alloy such as Alcoa C805-T6511 or berrylium-free alloy C37H-T6511.
[0020] With reference to FIG. 3, golf club head 10 is machined from a club head blank 26. Club head blank 26 is formed by sawing-off a portion of an extruded bar 28, along a plane 27 transverse to the longitudinal axis 29 of extruded bar 28. As can be seen from FIG. 3, the cross-section of extruded bar 28 defines a surface 30 that is near-net-shape to (i.e., having an area no more than 150% greater than) the area of the vertical front profile of...
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Abstract
A golf club head is machined from an extruded bar having an irregular cross-section that is near-net-shape to the vertical profile of the club. To form the club head, the extruded bar is sliced into a club head blank. The blank is secured to a machining fixture and machined into the final configuration. Because the club head blanks are formed from an extrusion that is already near-net-shape to the profile of the club, less metal is removed during the machining operations, which results in faster process times, less wasted material and therefore substantial cost savings over the prior art methods of manufacturing golf club heads.
Description
BACKGROUND OF THE INVENTION [0001] The present invention relates to golf club heads and in particular to golf putters and irons. [0002] Golf club putters and irons are traditionally made by an investment casting procedure sometimes referred to as lost-wax casting. According to this method, a wax replica of the club head is made by pouring wax into a mold. The wax replica is then dipped repeatedly into a ceramic slurry to build-up a ceramic mold of sufficient thickness to withstand the metal molding process. The wax is melted out of the mold and then the ceramic is fired to harden it. After it has been fired, the ceramic mold is filled with molten metal. Once the metal has cooled, the mold is broken off to reveal a club head blank that is ready for finish machining, which may include several steps of grinding, polishing, and / or milling. [0003] An alternative method of forming a club head blank is by forging. According to this process, a heated slug of metal is hammered or pressed bet...
Claims
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IPC IPC(8): A63B53/04B23P13/04
CPCA63B53/04A63B2053/0441A63B2053/0416B23P13/04A63B53/0416A63B53/0441A63B60/00
Inventor BLISS, JOHN C.PETERSEN, DAVID L.SCHWEIGERT, BRADLEY D.
Owner KARSTEN MFG CORP