Golf club head having texture pattern and method for producing the same
Provided are a golf club head and a method for producing the golf club head. The golf club head comprises a striking face that in turn comprises a recurrent texture pattern that has a period T and that is defined by a plurality of depressions, each depression having an average depth no greater than 0.10 mm. The striking face also comprises a plurality of scorelines that at least partially intersect the recurrent texture pattern and that have a scoreline pitch Ps such that T/Ps is greater than 1.0, each scoreline having an average depth no less than 0.10 mm.
1. A method of manufacturing a golf club head comprising the steps of:
on a golf club head body comprising a striking face, a sole portion, and a top portion opposite the sole portion, the striking face comprising a generally planar surface, surface milling the striking face by advancing a cutter in an advancement direction, being a direction from the sole portion toward the top portion, across the striking face at a feed rate that cyclically varies, resulting in a recurrent texture pattern that is a plurality of variably-structured depressions that, in combination, form a characteristic and repeating elemental sequence having a period T, the period T being defined as a length of the elemental sequence measured in the advancement direction of the cutter; and
forming a plurality of scorelines,
wherein, the scorelines are at least partially coextensive with the recurrent texture pattern, the scorelines define a scoreline pitch Ps such that T/Ps is greater than 1.0, and each of the scorelines has an average depth no less than 0.10 mm.
2. The method of claim 1 , wherein a spin rate of the cutter remains substantially constant as feed rate cyclically varies.
3. The method of claim 1 , further comprising applying a surface finish to the striking face, the surface finish being selected from the group consisting of: nickel-plating, chrome plating, laser etching, chemical etching, anodizing, physical vapor deposition, media blasting, and peening.
4. The method of claim 1 , further comprising generating a finished club head such that the striking face includes a textured region having a maximum profile height parameter Rt no less than 1000 μin and an average maximum profile height parameter Rz no greater than 1000 μin.
5. The method of claim 1 , wherein the golf club head body is an iron-type golf club head body.
6. The method of claim 1 , wherein the variably-structured depressions comprise a plurality of generally parallel arcuate grooves that are upwardly convex.
7. The method of claim 1 , wherein T/Ps is between 1.50 and 2.50.
8. The method of claim 7 , wherein T/Ps is between 1.75 and 2.25.
9. The method of claim 1 , wherein the variably-structured depressions include a minimum average depth of between 0.001 mm and 0.008 mm and a maximum average depth of between 0.015 mm and 0.040 mm.
10. The method of claim 1 , wherein cyclically varying the feed rate results in a variation in amplitude of the plurality of variably-structured depressions.
11. A method of manufacturing a golf club head comprising the steps of:
on a golf club head body comprising a striking face, a sole portion, and a top portion opposite the sole portion, the striking face comprising a generally planar surface, surface milling the striking face by advancing a cutter in an advancement direction, being a direction from the sole portion toward the top portion, across the striking face at a feed rate that cyclically varies, resulting in a recurrent texture pattern that is a plurality of variably-structured depressions that, in combination, form a characteristic and repeating elemental sequence having a period T, the period T being defined as a length of the elemental sequence measured in the advancement direction of the cutter; and
forming a plurality of scorelines,
wherein:
the scorelines are at least partially coextensive with the recurrent texture pattern and define a scoreline pitch Ps such that a first ratio, T/(N*Ps), is between 0.85 and 1.15, N being a whole number greater than 1; and
each scoreline has an average depth no less than 0.10 mm.
12. The method of claim 11 , wherein a spin rate of the cutter remains substantially constant as feed rate cyclically varies.
13. The method of claim 11 , further comprising applying a surface finish to the striking face, the surface finish being selected from the group consisting of: nickel-plating, chrome plating, laser etching, chemical etching, anodizing, physical vapor deposition, media blasting, and peening.
14. The method of claim 11 , further comprising generating a finished club head such that the striking face includes a textured region having a maximum profile height parameter Rt no less than 1000 μin and an average maximum profile height parameter Rz no greater than 1000 μin.
15. The method of claim 11 , wherein the golf club head body is an iron-type golf club head body.
16. The method of claim 11 , wherein the variably-structured depressions comprise a plurality of generally parallel arcuate grooves that are upwardly convex.
17. The method of claim 11 , wherein a second ratio, T/Ps, is between 1.50 and 2.50.
18. The method of claim 11 , wherein the variably-structured depressions include a minimum average depth of between 0.001 mm and 0.008 mm and a maximum average depth of between 0.015 mm and 0.040 mm.
19. The method of claim 11 , wherein T/(N*Ps) is between 0.95 and 1.05.
20. The method of claim 11 , wherein cyclically varying the feed rate results in a variation in amplitude of the plurality of variably-structured depressions.