Patent Application
20190176216
This invention relates to a forming method and relates particularly to a method for forming a golf club head.
As social trends change, the public pays more attention to the quality of life that leads to a rise in various recreation activities. In particular, golf both provides interests and requires skills. Besides, moderate exercise is provided when shifting among different golf courses. In addition, golf courses are generally designed by following original landforms. Thus, the public can enjoy varied natural landscapes while playing golf. Hence, golf becomes popular among people of all ages and further captures the public's attention to facilities for playing golf, particularly golf club heads.
Generally, golf club heads are mainly made by methods of cold forging and filling molds. The method of filling molds is performed by modelling a wax mold having a club-shaped contour and auxiliary pouring gates, adhering the wax mold to the auxiliary pouring gates manually by hot melt and fabricating, dipping the wax mold, cutting the auxiliary pouring gates after finishing pouring, and polishing and coating hitting surfaces of the golf club head whereby the golf club head is made. However, the method of filling molds reduces the production speed and fails to achieve the mass production. Further, air may enter into the wax mold during the pouring procedure to result in many gas holes formed in the interior of the golf club head. Hence, the structure strength of the golf club head is poor. The yield is reduced and production costs are increased. On the other hand, the method of cold forging is executed by multiple presses including cold-forging, punching and removing to form the golf club head. However, the method of cold forging requires complex steps and a large number of heavy machinery to complete the processing work of the golf club head, with the result that the processing time is prolonged and the processing efficiency is reduced. Further, multiple presses cause the increased hardness of processed materials. Therefore, stamping devices damage easily after bearing the excessively large impact over a long period of time to further increase repairing costs and that requires to be improved.
The object of this invention is to provide a method for forming a golf club head capable of simplifying the processing procedures, attaining a quick shaping operation, decreasing residual materials greatly, reducing processing costs, and increasing an economic benefit.
The method of this invention includes a preparing step for preparing a cylindrical metal blank obtained from segmenting a cylindrical metal material, a heating step for heating the cylindrical metal blank with a heating device to supple the cylindrical metal blank, a shaping step for shaping the heated cylindrical metal blank with a shaping device by pressing and pushing the cylindrical metal blank forward on a shaping die with a pushing unit to form a head section and a cylindrical engagement section extending outwards from the head section, and a stamping step for placing the head section on a stamping seat and stamping the head section with a stamping press when the cylindrical metal blank still remains heat, either the stamping seat or the stamping press is provided with a cave having a club-shaped contour to shape the head section into a golf club head having a hitting surface and a back surface at two opposite surfaces of the golf club head. A bending step for bending the cylindrical metal blank to render the head section incline to the engagement section can be performed before or after the stamping step. Because the cylindrical metal blank remains heat during the processing work in cooperation with shaping, bending, and stamping operation, the speedy shaping operation of the golf club head is achieved, the processing procedures are simplified greatly, residual materials and processing costs are reduced effectively, and an economic benefit is increased.
Preferably, the cave is recessed into the stamping seat so that the head section is positioned in the cave, then pressed by the stamping press, and thence shaped into the club shape corresponding to the club-shaped contour of the cave.
Preferably, the cylindrical metal blank is heated by high frequency heating, medium frequency heating, or electric heating.
Preferably, the head section is processed and formed by multi-stage stamping in the stamping step.
Preferably, the back surface of the golf club head is treated with cutting after the stamping step to form a finished shape.
Referring to
Referring to
The head section 41 can be processed and formed by multi-stage stamping in the stamping step 35. Besides, the back surface 412 can be treated with cutting to form a finished shape after the stamping step 35. For instance, unique symbols can be processed on the hitting surface 411 or the back surface 412 to increase the uniqueness and recognition of the finished golf club heads. Different designs and shapes can be applied according to different golf courses to increase the adaptability of the finished golf club heads. Further, the engagement section 42 is capable of engaging with a club shank (not shown) to provide a finished golf club product. Hence, the method 3 is executed by preparing the cylindrical metal blank 4, heating the cylindrical metal blank 4 to become soft, shaping the heated cylindrical metal blank 4 into the head section 41 and the engagement section 42, bending the engagement section 42 to make the engagement section 42 incline to the head section 41, and stamping the head section 41 to shape the head section 41 into the golf club head with the hitting surface 411 and the back surface 412 to finish the golf club head. Meanwhile, the cylindrical metal blank 4 remains heat during the following processing work after being heated in the heating step 32 to facilitate the processing work of shaping, bending, and stamping. Hence, a succession of the steps 31, 32, 33, 34, 35 including the preparing, high temperature heating, shaping, bending and stamping achieves the quick shaping operation, simplifies the processing procedures, reduces residual materials and processing costs, and increases an economic benefit.
Referring to
To sum up, the method of this invention includes steps of preparing a cylindrical metal blank by cutting a cylindrical metal material into sections, heating the cylindrical metal blank with the heating device whereby the cylindrical metal blank turns into supple, shaping the heated cylindrical metal blank with the shaping device by pressing and pushing the cylindrical metal blank forwards on the shaping die with the pushing unit to form the head section and the cylindrical engagement section whose diameter is smaller than the diameter of the head section, bending the engagement section to make the engagement section incline to the head section, and positioning the head section on the stamping seat and stamping with the stamping press whereby the head section is shaped into the golf club head having the hitting surface and the back surface, thereby completing the golf club head. Hence, the succession of the steps achieves the fast shaping operation, simplifies the processing procedures, decreases residual materials, reduces production costs, and increases an economic benefit.
While the embodiments of this invention are shown and described, it is understood that further variations and modifications may be made without departing from the scope of this invention.
