US-12623274-B2 - Method for manufacturing golf club head with sole textures by precision forging

US12623274B2US 12623274 B2US12623274 B2US 12623274B2US-12623274-B2

Abstract

A method for manufacturing a golf club head with sole textures comprises steps of providing and bending a crude rod made of a metallic material, a first forging process for forming a uniaxial tilting blank of a head body via a first forging die, a second forging process for forming a biaxial tilting blank of the head body via a second forging die, and a third forging process for forming a club head with sole textures via a third die. Compared with machining grooves to a sole of the club head, the method is time efficient and cost effective.

Inventors

Chi-Hung Su

Assignees

Chi-Hung Su

Dates

Publication Date: 20260512
Application Date: 20231118

Claims (6)

1 . A method for manufacturing a golf club head with sole textures by precision forging, the method comprising steps of: providing and bending a crude rod made of a metallic material; a first forging process for forming a uniaxial tilting blank of a head body of a golf club head, wherein the crude rod being bent is placed in a first forging die of a forging machine and is forged by a single forging press or a multi-forging press to form the uniaxial tilting blank of the head body; a second forging process for forming a biaxial tilting blank of the head body, wherein the uniaxial tilting blank of the head body is placed in a second forging die of the forging machine and is forged by a single forging press or a multi-forging press to form the biaxial tilting blank of the head body; a third forging process for forming a club head with sole textures, wherein the biaxial tilting blank of the head body is placed in a third forging die of the forging machine and is forged by a single forging press or a multi-forging press to form the club head having a biaxial tilting striking face and sole textures formed at a sole of the club head, wherein in the first forging process for forming a uniaxial tilting blank of a head body, the uniaxial tilting blank has a blank base having a blank face and a first datum plane being parallel to the blank face, a first axis and a second axis are perpendicular to each other and are defined in a reference datum of the forging machine, a first inclined angle is formed between the first datum plane and the first axis and ranges from 3 degrees to 25 degrees, and a second inclined angle is formed between the first datum plane and the second axis and is 0 degree; and in the step of the second forging process for forming a biaxial tilting blank of a head body, the biaxial tilting blank of the head body has a head base including a striking panel with a striking face, a sole is located behind a lower part of the striking panel, and a second datum plane is parallel to the striking face; a first inclined angle is formed between the second datum plane and the first axis defined in the reference datum and ranges from 3 degrees to 25 degrees, and a second inclined angle is formed between the second datum plane and the second axis defined in the reference datum and is perpendicular to the first axis and ranges from 3 degrees to 28 degrees.
2 . The method as claimed in claim 1 , wherein in the second forging process for forming a biaxial tilting blank of a head body, a parting line of the biaxial tilting blank of the head body is modified by the second forging die to reach a bottom edge of the striking face from a middle of the lower part of the striking panel; and in the third forging process for forming a club head with sole textures, a region of the sole textures is adjacent to the bottom edge of the striking face.
3 . The method as claimed in claim 2 , wherein in the first forging process for forming a uniaxial tilting blank of a head body, a forging temperature for the first forging process ranges from 700° C. to 1100° C.; in the second forging process for forming a biaxial tilting blank of the head body, a forging temperature for the second forging process ranges from 700° C. to 1100° C.; and in the third forging process for forming a club head with sole textures, a forging temperature for the third forging process ranges from 700° C. to 1100° C.
4 . The method as claimed in claim 3 , wherein in the third forging process for forming a club head with sole textures, the sole textures include multiple stripes, multiple round dimples, multiple oval dimples, or multiple polygonal dimples spaced apart from one another.
5 . The method as claimed in claim 1 , wherein in the first forging process for forming a uniaxial tilting blank of a head body, a forging temperature for the first forging process ranges from 700° C. to 1100° C.; in the second forging process for forming a biaxial tilting blank of the head body, a forging temperature for the second forging process ranges from 700° C. to 1100° C.; and in the third forging process for forming a club head with sole textures, a forging temperature for the third forging process ranges from 700° C. to 1100° C.
6 . The method as claimed in claim 5 , wherein in the third forging process for forming a club head with sole textures, the sole textures include multiple stripes, multiple round dimples, multiple oval dimples, or multiple polygonal dimples spaced apart from one another.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a club head of a golf club, and more particularly to a method for manufacturing a golf club head with sole textures by precision forging. 2. Description of Related Art A golf club, e.g. an iron golf club, has a club head in a specific appearance. The club head of the golf club is made by casting or forging metallic materials. In order to enhance strike performance of the club heads, in some iron golf clubs, grooves are formed to soles thereof for reducing frictional resistance between the soles of the club heads and the ground, thereby achieving smooth club swing and striking. In a conventional method for manufacturing a golf club head with sole textures, after a club head is formed, grooves are machined to the sole of the club head by a computer numerical control (CNC) machine. However, since the appearance of the club head is specified, the club head needs to be held by a fixture for stably fixing on a base of the CNC machine. There is a positioning deviation between the head body and the fixture. In addition, the machined grooves need to be formed to the sole of the club head having a biaxial tilting surface. Consequently, it is difficult to control quality of the machined grooves formed to the sole of the club head, and machining the grooves results in longer processing time and higher manufacturing costs. To overcome the shortcomings, the present invention tends to provide a method for manufacturing a golf club head with sole textures by precision forging to mitigate or obviate the aforementioned problems. SUMMARY OF THE INVENTION The main objective of the invention is to provide a method for manufacturing a golf club head with sole textures by precision forging to solve the problems of longer processing time and higher manufacturing costs for machining grooves to the sole of the golf club head. The method for manufacturing the golf club head with sole textures by precision forging has steps of providing and bending a crude rod made of a metallic material, a first forging process for forming a uniaxial tilting blank of a head body, a second forging process for forming a biaxial tilting blank of the head body, and a third forging process for forming a club head with sole textures. In the first forging process for forming a uniaxial tilting blank of a head body, the crude rod being bent is placed in a first forging die of a forging machine and is forged by a single forging press or a multi-forging press to form a uniaxial tilting blank of the head body. In the second forging process for forming a biaxial tilting blank of the head body, the uniaxial tilting blank of the head body is placed in a second forging die of the forging machine and is forged by a single forging press or a multi-forging presses to form a biaxial tilting blank of the head body. In the third forging process for forming a club head with sole textures, the biaxial tilting blank of the head body is placed in a third forging die of the forging machine and is forged by a single forging press or a multi-forging press to form a club head having a biaxial tilting striking face and sole textures formed at a sole of the club head. The method for manufacturing a golf club head with sole textures by precision forging in accordance with the present invention can achieve the following advantages. 1. Manufacturing time and costs for manufacturing a golf club head with textures can be reduced. With three steps of progressive precision forging processes, the crude rod made of a metallic material is firstly forged to form the uniaxial tilting blank of the head body, is secondly forged to form the biaxial tilting blank of the head body, and is finally forged to form the club head with sole textures step by step. The club head can be forged to match precision forging dies and is formed in specific appearance with the sole textures at the same time. The golf club head with sole textures can be efficiently manufactured. The problems of long manufacturing time and high manufacturing costs caused by machining grooves to a sole of the forged golf club head can be solved.2. Enhancing accuracy and quality of the sole textures of the club head. The club head with sole textures is precisely forged by three steps of progressive precision forging processes with appearance control via precision forging dies and forging temperature control according to each step of the forging process. The sole textures can be precisely formed in shape and in position. The club head can be manufactured with high accuracy and stable high quality.3. Varying the sole textures via forging dies. The club head is forged to have the sole textures via the third forging die, so the sole textures can be formed in various shapes according to various club heads. The club heads can be produced with stable and reliable qualities. Other objects, advantages and novel features of the inv