US20080004133A1 - Method of manufacturing a golf club face - Google Patents
Method of manufacturing a golf club face Download PDFInfo
- Publication number
- US20080004133A1 US20080004133A1 US11/854,998 US85499807A US2008004133A1 US 20080004133 A1 US20080004133 A1 US 20080004133A1 US 85499807 A US85499807 A US 85499807A US 2008004133 A1 US2008004133 A1 US 2008004133A1
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- United States
- Prior art keywords
- outer edge
- inches
- elliptical outer
- face plate
- elliptical
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0458—Heads with non-uniform thickness of the impact face plate
- A63B53/0462—Heads with non-uniform thickness of the impact face plate characterised by tapering thickness of the impact face plate
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0466—Heads wood-type
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/13—Surface milling of plates, sheets or strips
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0416—Heads having an impact surface provided by a face insert
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0458—Heads with non-uniform thickness of the impact face plate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49995—Shaping one-piece blank by removing material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1946—Face or end mill
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/303752—Process
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/02—Other than completely through work thickness
- Y10T83/0304—Grooving
Definitions
- This invention relates generally to golf clubs and, in particular, to so-called metal wood drivers.
- drivers which are clubs used primarily to strike a golf ball resting on a golf tee.
- driver heads consisting of a hollow shell usually made of metal, such as steel, aluminum, or titanium.
- These hollow shells have relatively thin walls including a thin front wall that is used to impact the golf ball.
- a golf club head consisting of a hollow metal shell with a reinforced front wall is disclosed in U.S. Pat. No. 4,511,145 to Schmidt.
- the club head disclosed in the Schmidt patent has an arched ridge extending between the heel and toe ends of the front wall.
- the arched ridge design of the Schmidt provides adequate reinforcement for drivers of moderate head volume, however, in an effort to obtain better and better performance from these hollow metal wood drivers, golf club manufacturers have increased the head volume from the moderate volume of 200 cc's to over 400 cc's during the past decade. As head size increases, less and less material is available to reinforce the front wall of the club face within acceptable weight limitations (i.e., around 200 grams mass). Consequently, more exotic materials such as forged or cold rolled titanium faces welded to a cast titanium body have been utilized in these super-oversized drivers. The rear surfaces of the front walls of these super-oversized drivers must be carefully contoured to provide adequate structural strength with a minimum amount of material.
- the most critical region to reinforce is, of course, the ideal ball impact point of the front wall. Because most golfer's swings vary somewhat from impact to impact, the reinforced region of the front wall must be distributed around the ideal impact point. However, since variations in a golfer's swing tend to be more in the heel and toe direction, rather than up or down, the distribution of hits tends to be within a horizontal, elliptical region rather than a circular region centered around the center of the club face. Accordingly, an elliptical, rather than a purely circular reinforcement is preferable.
- a golf club head having a face with a contoured rear surface is U.S. Pat. No. 6,354,962 to Galloway, et al.
- the club head disclosed in Galloway has a face plate reinforced with elliptical regions that are formed as part of the forging process of the face plate.
- a face plate reinforced with elliptical regions that are formed as part of the forging process of the face plate.
- forming an elliptical reinforced region presents special problems.
- the face cannot be machined properly on a lathe because the lathe will produce only a circular reinforced region.
- One manufacturer is known to use an end mill that makes multiple elliptical passes to machine the reinforced region of the golf club face. This operation is, however, time consuming and unnecessarily costly.
- a golf club head is manufactured by removing a portion of the rear surface of a face plate to form a central thickened region surrounded by a transition region that tapers to a thinner peripheral region.
- the face plate is a rolled sheet titanium alloy between 0.130 and 0.180 inches thick, a portion of the transition region of which is machined away to leave the central thickened region and to form the transition region and the thinner peripheral region.
- the central portion, the transition region and the peripheral region are formed in a single elliptical pass with a special cutting tool.
- the cutting tool or “form cutter” has a conical lateral cutting surface, which forms the transition region and the peripheral region in a single operation.
- This form cutter to machine the transition region and peripheral region in a single operation yields greater uniformity in the rear surface contour of the face plate and saves substantial time and money over prior art multiple pass machining operations.
- FIG. 1 is a partially cut-away rear perspective view of a golf club incorporating features of the present invention
- FIG. 2 is a rear cross-sectional view of the golf club of FIG. 1 ;
- FIG. 3 is a cross-sectional view of the golf club of FIG. 2 taken along line 3 - 3 ;
- FIG. 4 is a cross-sectional view of the golf club of FIG. 2 taken along line 4 - 4 ;
- FIG. 5 is a side view of a machining step in the method of forming golf club head in FIG. 2 ;
- FIG. 6 is a side view of an alternative cutting tool used in the machining step of FIG. 5 ;
- FIG. 7 is a side view of another alternative cutting tool used in the machining step of FIG. 5 .
- a golf club 10 includes a head 12 , a hosel 14 and a shaft 16 .
- Head 12 includes a hollow body 18 made of a metal material such as titanium.
- Hollow body 18 is formed as a shell 20 , which may be assembled from a series of forged pieces but, in the illustrative embodiment, comprises a titanium investment casting.
- a face plate 22 is attached by conventional means such as plasma or electron beam welding to a corresponding opening 23 in shell 20 to form hollow body 18 .
- Face plate 22 may be a conventional forged blank but, in the illustrative embodiment, comprises a rolled sheet titanium blank that is machined prior to welding to shell 20 as described more fully hereinafter.
- face plate 22 includes a central thickened region 24 that is substantially elliptical in shape with its major axis 26 oriented horizontal when the club is held in its normal address position.
- central thickened region 24 is between 0.130 and 0.180 inches in thickness.
- Central thickened region 24 is surrounded by a transition region 28 that tapers from the central thickened region 24 to a peripheral region 30 , which in the illustrative embodiment is 0.080 to 0.120 inches thick.
- Transition region 28 is also elliptical, however, for reasons that are explained more fully hereinafter, the major axis and minor axis of transition region 28 are a fixed amount larger than the respective major and minor axis of central thickened region 24 . Accordingly, the aspect ratio of transition region 28 is lower than the aspect ratio of central thickened region 24 (in other words, transition region 28 is a “fatter” ellipse than central thickened region 24 ).
- the rear contours of face plate 20 are formed by a machining operation shown schematically in FIG. 5 .
- the process begins with a blank face plate 32 , which in the illustrative embodiment comprises a blank stamped from a rolled sheet of titanium alloy.
- the blank face plate 32 has a thickness equal to the final thickness of the central thickened region 24 of the finished face plate 22 , which as noted hereinbefore is from 0.130 to 0.180 inches in thickness.
- the rear surface of blank face plate 32 is machined by using a cutting tool 34 to remove a portion thereof.
- the tip of cutting tool 34 has a lateral cutting surface 36 and a lower cutting surface 38 .
- Lower cutting surface 38 is perpendicular to the axis 40 of cutting tool 34 .
- Lateral cutting surface 36 is angled upward with respect to lower cutting surface 38 by an angle 42 of from about 5 to 20 degrees, but preferably about 13 degrees such that lateral cutting surface 36 defines a generally inverted conical frustum surface of revolution 44 as cutting tool 34 is rotated about its axis 40 .
- Lateral cutting surface 36 may have straight edges as shown in FIG. 5 , or may have edges 36 b that are concave downward as in the cutting tool 34 b shown in FIG. 6 , or may have edges 36 c that are convex downward as in the cutting tool 34 c shown in FIG. 7 . yielding a conical frustum surface of revolution (and corresponding transition regions) having correspondingly curved sides.
- the major axis 26 of central thickened region 24 is from 0.65 to 1.05 inches in length.
- the minor axis 48 of central thickened region 24 is 0.25 to 0.45 inches in length. Accordingly, the aspect ratio of central thickened region 24 is between 1.4 and 4.2. In the illustrative embodiment, major axis 26 is approximately 0.85 inches and minor axis 48 is approximately 0.35 inches yielding an aspect ratio of approximately 2.4.
- Major axis 50 and minor axis 52 of transition region 28 are a fixed amount “6” greater than the respective major and minor axes of central thickened region 24 , wherein the 6 value can be chosen from a range of about 0.40 inches to about 1.20 inches.
- the major axis 50 and minor axis 52 are approximately 0.86 inches greater than the respective major and minor axes of central thickened region 24 .
- major axis 50 in the illustrative embodiment is approximately 1.71 inches in length and minor axis 52 of transition region 28 is approximately 1.21 inches in length.
- the aspect ratio of transition region 28 is approximately 1.4 as opposed to the 2.4 aspect ratio of central thickened region 24 .
- the high aspect ratio central raised portion surrounded by the lower aspect ratio transition region provides optimum distribution of material for improved performance and reliability.
Abstract
Embodiments of methods of manufacturing a face plate for a golf cub are generally described herein. In one exemplary embodiment, a method for manufacturing a golf club face plate comprises: providing a face plate material, and milling the face plate material in an elliptical pattern to form a central region comprising, a first elliptical outer edge and a transition region extending from the first elliptical outer edge to a second elliptical outer edge. In this exemplary embodiment, each point along the second elliptical outer edge is displaced outward from the first elliptical outer edge by a predetermined distance. Other embodiments herein may be described and claimed.
Description
- This application claims priority to, incorporates by reference, and is a divisional application of prior application Ser. No. 10/803,837 filed Mar. 17, 2004 originally titled, Method of Manufacturing a Golf Club Face.
- This invention relates generally to golf clubs and, in particular, to so-called metal wood drivers.
- Recent developments in golf club design have included improvements in drivers, which are clubs used primarily to strike a golf ball resting on a golf tee. These improvements have resulted in drivers with club heads consisting of a hollow shell usually made of metal, such as steel, aluminum, or titanium. These hollow shells have relatively thin walls including a thin front wall that is used to impact the golf ball. In order to prevent the front wall of these hollow shells from permanently deforming or cracking upon ball impact, it has become necessary to reinforce the front wall. One example of a golf club head consisting of a hollow metal shell with a reinforced front wall is disclosed in U.S. Pat. No. 4,511,145 to Schmidt. The club head disclosed in the Schmidt patent has an arched ridge extending between the heel and toe ends of the front wall. The arched ridge design of the Schmidt provides adequate reinforcement for drivers of moderate head volume, however, in an effort to obtain better and better performance from these hollow metal wood drivers, golf club manufacturers have increased the head volume from the moderate volume of 200 cc's to over 400 cc's during the past decade. As head size increases, less and less material is available to reinforce the front wall of the club face within acceptable weight limitations (i.e., around 200 grams mass). Consequently, more exotic materials such as forged or cold rolled titanium faces welded to a cast titanium body have been utilized in these super-oversized drivers. The rear surfaces of the front walls of these super-oversized drivers must be carefully contoured to provide adequate structural strength with a minimum amount of material.
- The most critical region to reinforce, is, of course, the ideal ball impact point of the front wall. Because most golfer's swings vary somewhat from impact to impact, the reinforced region of the front wall must be distributed around the ideal impact point. However, since variations in a golfer's swing tend to be more in the heel and toe direction, rather than up or down, the distribution of hits tends to be within a horizontal, elliptical region rather than a circular region centered around the center of the club face. Accordingly, an elliptical, rather than a purely circular reinforcement is preferable. One example of a golf club head having a face with a contoured rear surface is U.S. Pat. No. 6,354,962 to Galloway, et al. The club head disclosed in Galloway has a face plate reinforced with elliptical regions that are formed as part of the forging process of the face plate. For clubs in which the club face is machined from a wrought alloy sheet or other sheet material, forming an elliptical reinforced region presents special problems. The face cannot be machined properly on a lathe because the lathe will produce only a circular reinforced region. One manufacturer is known to use an end mill that makes multiple elliptical passes to machine the reinforced region of the golf club face. This operation is, however, time consuming and unnecessarily costly.
- According to the present invention, a golf club head is manufactured by removing a portion of the rear surface of a face plate to form a central thickened region surrounded by a transition region that tapers to a thinner peripheral region. According to the illustrative embodiment, the face plate is a rolled sheet titanium alloy between 0.130 and 0.180 inches thick, a portion of the transition region of which is machined away to leave the central thickened region and to form the transition region and the thinner peripheral region. Rather than forming the rear surface contour of the face plate by making multiple passes with an end mill, however, the central portion, the transition region and the peripheral region are formed in a single elliptical pass with a special cutting tool. The cutting tool, or “form cutter” has a conical lateral cutting surface, which forms the transition region and the peripheral region in a single operation. Use of this form cutter to machine the transition region and peripheral region in a single operation yields greater uniformity in the rear surface contour of the face plate and saves substantial time and money over prior art multiple pass machining operations.
- The present invention will be better understood from a reading of the following detailed description, taken in conjunction with the accompanying drawing figures in which like references designate like elements, and in which:
-
FIG. 1 is a partially cut-away rear perspective view of a golf club incorporating features of the present invention; -
FIG. 2 is a rear cross-sectional view of the golf club ofFIG. 1 ; -
FIG. 3 is a cross-sectional view of the golf club ofFIG. 2 taken along line 3-3; -
FIG. 4 is a cross-sectional view of the golf club ofFIG. 2 taken along line 4-4; -
FIG. 5 is a side view of a machining step in the method of forming golf club head inFIG. 2 ; -
FIG. 6 is a side view of an alternative cutting tool used in the machining step ofFIG. 5 ; and -
FIG. 7 is a side view of another alternative cutting tool used in the machining step ofFIG. 5 . - The drawing figures are intended to illustrate the general manner of construction and are not necessarily to scale. In the description and the in the drawing figures, specific illustrative examples are shown and herein described in detail. It should be understood, however, that the drawing figures and detailed description are not intended to limit the invention to the particular form disclosed but are merely illustrative and intended to teach one of ordinary skill how to make and/or use the invention claimed herein and for setting forth the best mode for carrying out the invention.
- Referring to
FIG. 1 , agolf club 10 includes ahead 12, ahosel 14 and ashaft 16.Head 12 includes ahollow body 18 made of a metal material such as titanium.Hollow body 18 is formed as ashell 20, which may be assembled from a series of forged pieces but, in the illustrative embodiment, comprises a titanium investment casting. Aface plate 22 is attached by conventional means such as plasma or electron beam welding to acorresponding opening 23 inshell 20 to formhollow body 18.Face plate 22 may be a conventional forged blank but, in the illustrative embodiment, comprises a rolled sheet titanium blank that is machined prior to welding toshell 20 as described more fully hereinafter. - As noted hereinbefore, because a golfer's swing tends to vary more in the heel-toe direction than it does up or down, the inventor of the present invention determined that the most efficient reinforcement would be an elliptical thickened region oriented so that the major axis of the reinforced region was substantially horizontal when the club is held in its normal position for addressing the ball. Accordingly,
face plate 22 includes a central thickenedregion 24 that is substantially elliptical in shape with itsmajor axis 26 oriented horizontal when the club is held in its normal address position. In the illustrative embodiment, central thickenedregion 24 is between 0.130 and 0.180 inches in thickness. Central thickenedregion 24 is surrounded by atransition region 28 that tapers from the central thickenedregion 24 to aperipheral region 30, which in the illustrative embodiment is 0.080 to 0.120 inches thick.Transition region 28 is also elliptical, however, for reasons that are explained more fully hereinafter, the major axis and minor axis oftransition region 28 are a fixed amount larger than the respective major and minor axis of central thickenedregion 24. Accordingly, the aspect ratio oftransition region 28 is lower than the aspect ratio of central thickened region 24 (in other words,transition region 28 is a “fatter” ellipse than central thickened region 24). - With reference to
FIGS. 2-5 , prior to assembly offace plate 22 toshell 20, the rear contours offace plate 20 are formed by a machining operation shown schematically inFIG. 5 . The process begins with a blank face plate 32, which in the illustrative embodiment comprises a blank stamped from a rolled sheet of titanium alloy. The blank face plate 32 has a thickness equal to the final thickness of the central thickenedregion 24 of the finishedface plate 22, which as noted hereinbefore is from 0.130 to 0.180 inches in thickness. The rear surface of blank face plate 32 is machined by using acutting tool 34 to remove a portion thereof. The tip ofcutting tool 34 has alateral cutting surface 36 and alower cutting surface 38.Lower cutting surface 38 is perpendicular to theaxis 40 ofcutting tool 34.Lateral cutting surface 36 is angled upward with respect tolower cutting surface 38 by anangle 42 of from about 5 to 20 degrees, but preferably about 13 degrees such thatlateral cutting surface 36 defines a generally inverted conical frustum surface of revolution 44 ascutting tool 34 is rotated about itsaxis 40.Lateral cutting surface 36 may have straight edges as shown inFIG. 5 , or may haveedges 36 b that are concave downward as in thecutting tool 34 b shown inFIG. 6 , or may have edges 36 c that are convex downward as in thecutting tool 34 c shown inFIG. 7 . yielding a conical frustum surface of revolution (and corresponding transition regions) having correspondingly curved sides. - As can be seen from
FIG. 5 , as thelower cutting surface 38 andlateral cutting surface 36 are brought into contact with rear surface 46 of blank face plate 32,lower cutting surface 38 andlateral cutting surface 36 cooperate to cut a taperedtransition region 28 and aflat perimeter region 30 simultaneously in a single pass, thus obviating the need to make multiple passes with an end mill as in the prior art. With particular reference toFIGS. 2-4 , themajor axis 26 of central thickenedregion 24 is from 0.65 to 1.05 inches in length. Theminor axis 48 of central thickenedregion 24 is 0.25 to 0.45 inches in length. Accordingly, the aspect ratio of central thickenedregion 24 is between 1.4 and 4.2. In the illustrative embodiment,major axis 26 is approximately 0.85 inches andminor axis 48 is approximately 0.35 inches yielding an aspect ratio of approximately 2.4. -
Major axis 50 andminor axis 52 oftransition region 28 are a fixed amount “6” greater than the respective major and minor axes of central thickenedregion 24, wherein the 6 value can be chosen from a range of about 0.40 inches to about 1.20 inches. In the illustrative example, themajor axis 50 andminor axis 52 are approximately 0.86 inches greater than the respective major and minor axes of central thickenedregion 24. Thus,major axis 50 in the illustrative embodiment is approximately 1.71 inches in length andminor axis 52 oftransition region 28 is approximately 1.21 inches in length. Thus, the aspect ratio oftransition region 28 is approximately 1.4 as opposed to the 2.4 aspect ratio of central thickenedregion 24. The high aspect ratio central raised portion surrounded by the lower aspect ratio transition region provides optimum distribution of material for improved performance and reliability. - Although certain illustrative embodiments and methods have been disclosed herein, it will be apparent from the foregoing disclosure to those skilled in the art that variations and modifications of such embodiments and methods may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the invention should be limited only to extent required by the appended claims and the rules and principals of applicable law.
Claims (25)
1. A method for manufacturing a golf club face plate comprising:
providing a face plate material;
milling the face plate material in an elliptical pattern to form:
a central region comprising a first elliptical outer edge; and
a transition region extending from the first elliptical outer edge to a second elliptical outer edge;
wherein:
each point along the second elliptical outer edge is displaced outward from the first elliptical outer edge by a predetermined distance.
2. The method of claim 1 , wherein the central region comprises a thickness substantially similar to a thickness of the face plate material.
3. The method of claim 1 , wherein the central region comprises a thickness of about 0.13 inches to about 0.18 inches.
4. The method of claim 1 , wherein the predetermined distance is about 0.40 inches to about 1.20 inches.
5. The method of claim 1 , wherein milling the face plate material comprises using an end mill to mill the face plate material.
6. The method of claim 1 , wherein the central region comprises a major axis of about 0.65 inches to about 1.05 inches.
7. The method of claim 1 , wherein the central region comprises a minor axis of about 0.25 inches to about 0.45 inches.
8. The method of claim 1 , wherein an aspect ratio of the central region is about 1.4 to about 4.2.
9. The method of claim 1 , wherein an aspect ratio of the second elliptical outer edge is less than an aspect ratio of the central region.
10. The method of claim 1 , wherein milling the face plate material comprises using a cutting tool comprising a first cutting surface and a second cutting surface different from the first cutting surface.
11. The method of claim 10 , wherein the second cutting surface comprises a perpendicular configuration to a rotating axis of the cutting tool.
12. The method of claim 10 , wherein the first cutting surface creates an angle with respect to the second cutting surface of about 5 degrees to about 20 degrees.
13. The method of claim 1 , wherein the transition region comprises a non-linear transition between the first elliptical outer edge and the second elliptical outer edge.
14. The method of claim 1 , wherein the transition region comprises a non-linear transition having a convex configuration.
15. The method of claim 1 , wherein the transition region comprises a non-linear transition having a concave configuration.
16. The method of claim 1 , wherein the transition region comprises a frustrum-like region.
17. The method of claim 1 , wherein milling the face plate material further comprises milling the face place material in a single elliptical orbit.
18. A method for manufacturing a golf club head:
providing a golf club head shell comprising an opening to receive a faceplate;
providing a faceplate; and
coupling the faceplate to the opening;
wherein, providing a faceplate further comprises:
milling a face plate material in an elliptical pattern to form:
a central region comprising a first elliptical outer edge; and
a transition region tapering from the first elliptical outer edge to a second elliptical outer edge;
wherein:
cross-section profiles of the transition region from the first elliptical outer edge to the second elliptical outer edge are substantially similar when the cross sectional profiles are taken along perpendicular directions that are collinear with a major axis and a minor axis of the second elliptical outer edge.
19. The method of claim 18 , wherein:
the central region comprises a major axis of about 0.65 inches to about 1.05 inches;
the central region comprises a minor axis of about 0.25 inches to about 0.45 inches;
an aspect ratio of the central region is about 1.4 to about 4.2; and
a thickness of the central region is about 0.13 inches to about 0.18 inches.
20. The method of claim 18 , wherein the transition region comprises a convex configuration.
21. The method of claim 18 , wherein the transition region comprises a concave configuration.
22. A method for manufacturing a golf club:
providing a golf club head comprising a faceplate; and
coupling the golf club head to a shaft;
wherein, the faceplate comprises:
a first region comprising a first elliptical outer edge comprising a first aspect ratio, a first major axis, and a first minor axis; and
a second region extending from the first elliptical outer edge to a second elliptical outer edge, comprising a second aspect ratio, a second major axis, and a second minor axis, the second major axis being equal to the first major axis plus a predetermined distance, and the second minor axis being equal to the first minor axis plus the predetermined distance.
23. The method of claim 22 , wherein:
the first and second major axes are collinear with each other; and
the first and second minor axes are collinear with each other.
24. The method of claim 22 , wherein:
the first major axis is about 0.65 inches to about 1.05 inches;
the first minor axes is about 0.25 inches to about 0.45 inches; and
the aspect ratio of the first region is about 1.4 to about 4.2.
25. The method of claim 22 , wherein the second region comprises a non-linear transition from the first elliptical outer edge to the second elliptical outer edge.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/854,998 US20080004133A1 (en) | 2004-03-17 | 2007-09-13 | Method of manufacturing a golf club face |
US13/209,321 US8826512B2 (en) | 2004-03-17 | 2011-08-12 | Method of manufacturing a face plate for a golf club head |
US14/457,903 US9089746B2 (en) | 2004-03-17 | 2014-08-12 | Method of manufacturing a face plate for a golf club head |
US14/795,556 US9539476B2 (en) | 2004-03-17 | 2015-07-09 | Face plate for a golf club head |
US15/396,911 US10183201B2 (en) | 2004-03-17 | 2017-01-03 | Method of manufacturing a face plate for a golf club head |
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US13/209,321 Active 2025-01-15 US8826512B2 (en) | 2004-03-17 | 2011-08-12 | Method of manufacturing a face plate for a golf club head |
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US14/795,556 Expired - Lifetime US9539476B2 (en) | 2004-03-17 | 2015-07-09 | Face plate for a golf club head |
US15/396,911 Expired - Lifetime US10183201B2 (en) | 2004-03-17 | 2017-01-03 | Method of manufacturing a face plate for a golf club head |
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USD954879S1 (en) | 2020-10-16 | 2022-06-14 | Parsons Xtreme Golf, LLC | Golf club head |
USD962373S1 (en) | 2020-10-30 | 2022-08-30 | Parsons Xtreme Golf, LLC | Golf club head |
USD941412S1 (en) | 2021-03-29 | 2022-01-18 | Parsons Xtreme Golf, LLC | Golf club head |
USD940801S1 (en) | 2021-03-29 | 2022-01-11 | Parsons Xtreme Golf, LLC | Golf club head |
USD996547S1 (en) | 2021-03-29 | 2023-08-22 | Parsons Xtreme Golf, LLC | Golf club head |
USD940802S1 (en) | 2021-06-16 | 2022-01-11 | Parsons Xtreme Golf, LLC | Golf club head |
USD985085S1 (en) | 2021-06-30 | 2023-05-02 | Parsons Xtreme Golf, LLC | Golf club head |
Also Published As
Publication number | Publication date |
---|---|
US20150306472A1 (en) | 2015-10-29 |
CA2500875A1 (en) | 2005-09-17 |
GB2412072B (en) | 2007-11-28 |
US20050209019A1 (en) | 2005-09-22 |
GB0505427D0 (en) | 2005-04-20 |
GB2412072A (en) | 2005-09-21 |
US9089746B2 (en) | 2015-07-28 |
US10183201B2 (en) | 2019-01-22 |
US20110296661A1 (en) | 2011-12-08 |
US20140348607A1 (en) | 2014-11-27 |
US9539476B2 (en) | 2017-01-10 |
CA2500875C (en) | 2010-10-26 |
US8826512B2 (en) | 2014-09-09 |
US7347794B2 (en) | 2008-03-25 |
US20170106255A1 (en) | 2017-04-20 |
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Owner name: KARSTEN MANUFACTURING CORPORATION, ARIZONA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHWEIGERT, BRADLEY D.;REEL/FRAME:020160/0032 Effective date: 20071102 |
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