TWI836612B - Patter forming method for club head - Google Patents

Abstract

A pattern forming method for club head is adapted for solving the problem that the conventional forming method consumes more time and generates more wastes. The method sequentially comprising a forming-heating step and a pattern-forging step. In the forming-heating step, a to-be-processed workpiece with a target surface structure is heated to a pattern-forming temperature. The patter-forming temperature ranges from 750℃ to 925℃. In the pattern-forging step, the to-be-processed workpiece being heated to the pattern-forming temperature is applied with a forging weight ranging from 600 tons to 800 tons.

Description

Club head texture forming method

The present invention relates to a molding method, in particular to a rod head texture molding method.

It is known that when manufacturing the texture of a golf club head, a CNC (computerized numerical control) processing method is used, such as CNC turning and milling compound multi-axis processing method, to remove the material on the club head with a tool to form a specific texture. However, in the above CNC processing process, each club head must be accurately installed on the corresponding fixture before each processing, and it is better to measure it first, such as CMM (three-dimensional measuring machine) to obtain the coordinate value to be corrected during processing; in addition, when the club head is processed by CNC control tool, a large amount of waste will be generated. Therefore, the above method of processing the texture of the club head by CNC tool will have the problems of cumbersome preparation process and time and generate a large amount of waste, and there are problems of time-consuming and poor material utilization.

In view of this, it is known that there is still a need to improve the rod head texture forming method.

In order to solve the above problems, the purpose of the present invention is to provide a club head texture forming method that can improve processing efficiency and improve material utilization.

The second purpose of the present invention is to provide a rod head texture forming method, which can form a target texture with stable structure and good quality on the workpiece to be processed.

Directionality or its approximate terms are used throughout the present invention, such as "front", "back", "Left", "right", "top (top)", "bottom (bottom)", "inside", "outside", "side", etc., mainly refer to the directions of the attached drawings, each directionality or its approximation The terms are only used to assist in explaining and understanding the embodiments of the present invention, and are not intended to limit the present invention.

The use of the quantifier "a" or "an" in the elements and components described throughout the present invention is only for convenience of use and to provide a common sense of the scope of the present invention; in the present invention, it should be interpreted as including one or at least one, and single The concept of also includes the plural unless it is obvious that something else is meant.

The term "piece to be processed" throughout the present invention can refer to an object to be processed in any processing program, and can be terminated in a corresponding processing (sub) program to form a processed piece or a finished product. However, if the aforementioned processed parts to be processed or finished products are followed by other processes that have yet to be processed, the processed parts to be processed or finished products will still be in the status of "to be processed" in the next process, so Throughout the present invention, the names of the parts to be processed in or after each processing state are not specifically distinguished, and are expressed by the term "pieces to be processed".

The term "multi-pass" throughout the present invention refers to the processing of the workpiece to be processed by at least two forging procedures. The forging procedures may include rough forging, medium forging, fine forging and customized forging procedures (such as rough and medium forging). Forged or medium fine forged). Among them, in different forging procedures (different passes), there will be molds with different corresponding shapes, and the design of these molds changes in response to different needs, so that those with ordinary knowledge in the field can understand, so the present invention The general will not specify the mold shape corresponding to each pass.

The term "multiple-pass continuous forging" in the present invention refers to the process of heating the workpiece to the first temperature at one time and then subjecting the workpiece to the first temperature to at least two types of continuous forging processes, and the workpiece does not need to be trimmed during the different types of continuous forging processes. Therefore, the multi-pass continuous forging may include a combination of at least two of the processes of rough forging, intermediate forging, and fine forging, such as a combination of rough forging followed by intermediate forging, a combination of rough forging followed by fine forging, a combination of intermediate forging followed by fine forging, and a combination of rough forging followed by intermediate forging and then followed by fine forging, etc., and also includes A combination of roughing and medium forging followed by fine forging or roughing and medium and fine forging; in particular, it may include a combination of multiple forgings at the same forging level that are customized according to actual processing requirements, such as a combination of the first roughing and the second roughing and optionally followed by medium and/or fine forging, or roughing and medium forging followed by fine forging. In particular, the total forging completion time of the multiple consecutive forgings does not exceed 60 seconds, preferably does not exceed 30 seconds, and more preferably does not exceed 15 seconds.

The temperature adjustment of the "first temperature", "second temperature" and "texture processing temperature" described in the present invention can be adjusted within a range of 0.1 degrees Celsius. The temperature range is defined according to the material properties of the workpiece to be processed/the first forged part/the second forged part, the corresponding forging structure and the corresponding forging pressure.

The term "applied weight in tons" as used throughout the present invention refers to the tonnage output by a corresponding forging machine during forging, which can be regarded as the weight borne by the pressurized object. It can also be understood by those with ordinary knowledge in the field of the present invention as A general term for applying pressure or forging pressure. The adjustment of the applied weight can take an applied weight of 0.01 tons (10 kg) as the adjustment interval.

The club head texture forming method of the present invention includes: a texture forming step, which sequentially includes: a forming heating step, heating a workpiece to be processed with a target surface structure to a texture forming temperature, and the texture forming temperature is between Between 750 degrees Celsius and 925 degrees Celsius; and a texture forging step, applying an applied weight of 600 to 800 tons to the aforementioned piece to be processed heated to the texture forming temperature for forging, so as to obtain a texture with at least one texture. For finished forgings, the at least one pattern protrudes from the surface of the formed forging. The at least one pattern has a length, a width and a height. The length is not less than the width, the width is not less than 0.25mm, and the height is between Between 0.10mm and 0.30mm.

Accordingly, the club head texture forming method of the present invention uses forging to form the texture, which has the effect of improving processing efficiency and improving material utilization. In addition, through the combination of the texture forming temperature and the forging pressure defined in the texture forming step, it is possible to form shapes on the workpiece to be processed. It has the effect of forming a target texture with stable structure and good quality. In addition, through the above-mentioned definition of size, it has the effect of forming the texture on the piece to be processed.

Wherein, the workpiece to be processed having the target surface structure is first produced by a multi-pass continuous forging step; the multi-pass continuous forging step sequentially includes a first heating step, a first forging step and a first trimming step; in the first heating step, the workpiece to be processed is heated to a first temperature; in the first forging step, the workpiece to be processed heated to the first temperature is subjected to a multi-pass continuous forging to obtain the workpiece to be processed subjected to a multi-pass continuous forging; in the first trimming step, the workpiece to be processed is trimmed to form the workpiece to be processed having the target surface structure. In this way, through the multiple consecutive forging steps, it is possible to improve processing efficiency, reduce material loss and improve the overall strength of the workpiece to be processed.

Wherein, the workpiece to be processed with the target surface structure is produced by a multi-pass continuous forging step and a fine forging step in sequence; the multi-pass continuous forging step sequentially includes a first heating step, A first forging step and a first trimming step; in the first heating step, a piece to be processed is heated to a first temperature; in the first forging step, the aforementioned processed material is heated to the first temperature The piece to be processed is subjected to multiple passes of continuous forging to obtain the piece to be processed that has been forged in multiple passes; in the first trimming step, the edges of the piece to be processed are trimmed to form the trimmed piece. The piece to be processed; and the fine forging step sequentially includes a second heating step, a second forging step and a second trimming step; in the second heating step, the material to be processed is heated to a second temperature ; In the second forging step, the material to be processed heated to the second temperature is finely forged to obtain the finely forged piece to be processed; in the second trimming step, the material to be processed is finely forged. The workpiece to be processed is trimmed to form the workpiece to be processed with the target surface structure. In this way, through the multi-pass continuous forging steps, the processing efficiency can be improved, the material consumption can be reduced, and the overall strength of the workpiece to be processed can be improved.

The multi-pass continuous forging step includes at least a first forging pass and a second forging pass, and the forging pressure of the second forging pass is at least 50 tons higher than the forging pressure of the first forging pass. Thus, the workpiece to be processed can be further forged by making the forging pressure of the second forging pass higher than the forging pressure of the first forging pass by at least 50 tons, thereby improving the forging accuracy.

The first forging is performed with an applied weight of 500 to 700 tons, the second forging is performed with an applied weight of 550 to 750 tons, and the first heating temperature is between 800 degrees Celsius and 900 degrees Celsius. Thus, by defining the range of the first heating temperature, the first forging and the second forging pressure, the workpiece to be processed can be further forged under suitable conditions, thereby improving the forging accuracy.

Wherein, the width is between 0.25mm and 2.00mm, and the height is between 0.10mm and 0.15mm. In this way, further defining the above-mentioned dimensions has the effect of forming the texture on the piece to be processed.

Among them, the ratio of the height divided by the width defines a depth-to-width ratio not greater than 1.2. Thus, through the definition of the depth-to-width ratio, it is beneficial to form the pattern on the workpiece to be processed, and it is effective in improving the structural strength of the formed pattern (corresponding to the mold groove), and it is effective in improving the quality stability of the forging forming.

Among them, the aspect ratio value is not greater than 0.6. In this way, by further defining the aspect ratio, it has the effect of forming the texture of the workpiece to be processed, and has the effect of improving the structural strength of the molding texture (corresponding to the mold groove), and has the effect of improving the quality of forging molding. stability effect.

The at least one texture protrudes from the surface of the molded forged part, and the at least one texture has a height, and the height difference of the at least one texture is between 0.05mm and 0.15mm. Thus, through the relevant characteristics of the texture and the steps and values associated with forging, a club head texture with higher structural strength and stable quality can be produced.

1: Finished forgings

11: Texture

H: height

L: length

W: Width

P: Pitch

S1: Multi-pass continuous forging steps

S11: First heating step

S12: First forging step

S13: The first trimming step

S2: Detailed forging steps

S21: Second heating step

S22: Second forging step

S23: Second trimming step

S3: Texture forming steps

S31: Molding heating step

S32: Texture forging steps

[Figure 1] A schematic diagram of the steps of a preferred embodiment of the club head texture forming method of the present invention.

[Figure 2] Schematic diagram of forming corresponding textures on the club head through the club head texture forming method of the present invention.

[Figure 3] An enlarged view of the local structure shown in Figure 2.

In order to make the above and other purposes, features and advantages of the present invention more clearly understood, the following specifically cites a preferred embodiment of the present invention and provides a detailed description in conjunction with the attached drawings.

Please refer to Figure 1, which shows the steps of the rod head texture forming method of the present invention, including a multi-pass continuous forging step S1, an optional fine forging step S2 and a texture forming step S3.

The multi-pass continuous forging step S1 sequentially includes a first heating step S11, a first forging step S12 and a first trimming step S13.

In the first heating step S11, a workpiece to be processed is heated to a first temperature. In one example, the workpiece to be processed may be a rod, and the material of the workpiece to be processed is preferably low-carbon steel, low-carbon alloy steel or spring steel, and more preferably any one of the corresponding specifications S20C low-carbon steel material, S25C low-carbon steel material and SUP-10 spring steel material. The temperature range of the first temperature may be between 750 degrees Celsius and 900 degrees Celsius, preferably between 800 degrees Celsius and 850 degrees Celsius.

In the first forging step S12, the workpiece to be processed that has been heated to the first temperature is forged in multiple passes to obtain a first forged formed part (which can still be regarded as the workpiece to be processed and also a processed part). The piece to be processed is forged in multiple passes). In this way, by performing multi-pass continuous forging because the workpiece to be processed has relatively high metal fluidity corresponding to the first temperature, the time required to reheat the workpiece to the first temperature between each pass can be saved. ; It also allows the workpiece to be processed to be continuously forged The scrap material formed during the forging process can be partially returned to the corresponding mold in the subsequent forging process, thereby reducing material loss; and avoiding the reduction in strength and hardness of the workpiece to be processed through multiple heating processes. situation. Preferably, according to the characteristics of the workpiece to be processed, the material of the mold used for forging can be hot work die steel; preferably, the hardness is HRC 36 to HRC 57; more preferably, it is HRC 50 to HRC 52, and the mold The preferred working temperature is between 100 degrees Celsius and 180 degrees Celsius. In one example, the first forged formed part/piece to be processed is a club head, particularly a golf club head.

In the first trimming step S13, the first forged part/part to be processed is trimmed; preferably, after trimming, the first forged part/part to be processed can have a predetermined target surface structure; the target surface structure refers to the material to be processed having a predetermined outer contour and/or predetermined surface features (such as a structure with a concave surface). Alternatively, after trimming the first forged part/part to be processed, a corresponding surface treatment is performed.

The fine forging step S2 is an optional step based on actual processing requirements. Especially after performing the multi-pass continuous forging step S1, the material to be processed (equal to the first forged molded part) requires additional forging procedures. , to form the target surface structure. The fine forging step S2 sequentially includes a second heating step S21, a second forging step S22 and a second trimming step S23.

In the second heating step S21, the material to be processed is heated to a second temperature. The temperature range of the second temperature can be between 750 degrees Celsius and 900 degrees Celsius, preferably between 800 degrees Celsius and 850 degrees Celsius.

In the second forging step S22, the material to be processed that has been heated to the second temperature is finely forged to obtain a second forged shaped part (which can still be regarded as the part to be processed, and is also finely forged). of the piece to be processed), and the second forged formed piece/piece to be processed has the target surface structure after trimming. Preferably, according to the characteristics of the workpiece to be processed (equal to the first forged formed part), the material of the die used for forging can be hot work die steel; preferably, the hardness is HRC 36 to HRC 57; more preferably, it is HRC 50 to HRC 52, and the working temperature of the mold is preferably 100 degrees Celsius degrees to 180 degrees Celsius. In one example, the second forged formed part/piece to be processed is a club head, particularly a golf club head.

In the second trimming step S23, the second forged formed part/piece to be processed is trimmed to have the target surface structure. In addition, optionally, a corresponding surface treatment is performed after trimming the second forged formed part/piece to be processed.

Based on the above-mentioned multiple consecutive forging steps S1 and the optional fine forging step S2, the present invention can have at least two of the following implementation examples before the pattern forming step S3, which are summarized in Table 1 below.

In an example in which the material to be processed (including the first forged part and the second forged part) is S25C low-carbon steel material and SUP-10 spring steel material, rough forging is performed with an applied weight of 560 to 580 tons; medium forging is performed with an applied weight of 580 to 600 tons; and fine forging is performed with an applied weight of 750 to 770 tons. In other words, the multiple-pass continuous forging step may have at least a first forging pass, a second forging pass and an optional third forging pass; the first forging pass (i.e. the above-mentioned rough forging) is preferably performed with an applied weight of 500 to 700 tons, the second forging pass is preferably performed with an applied weight of 550 to 750 tons; the third forging pass (i.e. the above-mentioned fine forging) is performed with an applied weight of 750 to 770 tons. Preferably, the forging pressure of the second forging pass (i.e. the above-mentioned medium forging) may be at least 50 tons higher than the forging pressure of the first forging pass by an applied weight of at least 50 tons.

The pattern forming step S3 sequentially includes a forming heating step S31 and a pattern forging step S32.

In the forming and heating step S31, the workpiece to be processed (which can be equivalent to the first forged formed part or the second forged formed part) having the target surface structure is heated to a texture forming temperature. The texture forming temperature can be between 700 degrees Celsius and 1000 degrees Celsius, preferably between 750 degrees Celsius and 925 degrees Celsius. In particular, when the workpiece to be processed is a low carbon steel material with specification model S25C, the pattern forging temperature may be 740 degrees Celsius to 880 degrees Celsius, preferably 790 degrees Celsius to 830 degrees Celsius. In particular, in the case where the workpiece to be processed is a spring steel material with specification model SUP-10, the pattern forging temperature may be 850 degrees Celsius to 1000 degrees Celsius, preferably 900 degrees Celsius to 925 degrees Celsius.

In the texture forging step S32, the heated workpiece is subjected to texture forging to obtain a finished forged workpiece 1 having at least one texture 11 (as shown in FIGS. 2 and 3). The finished forged workpiece 1 may be, for example, a golf club head, and the texture 11 protrudes from the surface of the finished forged workpiece 1. Preferably, corresponding to the characteristics of the workpiece, the material of the mold used for forging may be hot-working die steel; preferably, the hardness is HRC 36 to HRC 57; more preferably, the hardness is HRC 50 to HRC 52, and the working temperature of the mold is preferably between 100 degrees Celsius and 180 degrees Celsius. Preferably, when the texture forging is performed, the texture 11 is forged with an applied weight of 600 to 800 tons. In particular, when the workpiece is a low-carbon steel material with a specification model of S25C, the texture 11 is forged with an applied weight of 560 to 600 tons. In particular, when the workpiece is a spring steel material with a specification model of SUP-10, the texture 11 is forged with an applied weight of 600 to 645 tons. Preferably, the draft angle of the texture 11 can be 86 degrees to 93 degrees; the draft angle is preferably adjusted in an interval of 0.1 degrees.

For details, please refer to Figures 2 and 3. The at least one line 11 may be a linear line, but other shapes are not excluded. In an example, the at least one texture 11 has a length L, A width W and a height H. Preferably, in the case of multiple lines 11, there is a pitch P between any two of the lines 11. Preferably, the length L is not less than the width W. Preferably, the ratio of the height H divided by the width W defines an aspect ratio not greater than 1.2, and the aspect ratio is preferably not greater than 0.6; in this way, through the aspect ratio, the structural strength of the texture 11 can be made stronger. It is stable and makes the texture easier to form and has better texture forming quality; in addition, the mold used for forging the texture 11 with the aspect ratio also has a corresponding mold texture structure, and the mold texture structure is also It can have a corresponding aspect ratio, so that the mold texture structure can be easily produced, and can have reasonable stress corresponding to the material characteristics of the workpiece to be processed during forging, which can reduce damage or damage caused by unreasonable stress. Deformation conditions to improve the life and forging quality of the corresponding mold. Preferably, the width W is not less than 0.25mm, and the height H is between 0.10mm and 0.30mm; more preferably, the width W is between 0.25mm and 2.00mm, and the height H is between 0.25mm and 2.00mm. is between 0.10mm and 0.15mm; thus, based on considering the material formability of the material to be processed corresponding to the mold groove during forging, and considering the convenience of making the mold groove, the above dimensions (length L, width The definition of W, height H and pitch P) is conducive to the effect of forming the texture 11 on the piece to be processed. It is preferred that each of the above dimensions is adjusted within an interval of 0.001mm.

It should be noted that in the case of multiple lines 11, the pitch P minus the width W of the corresponding line 11 defines a spacing, and the ratio between the height H and the spacing also conforms to the aforementioned depth-to-width ratio. In this way, the protruding portion on the corresponding mold can have better structural strength, which is beneficial to the molding and forging quality of the line 11.

In particular, when the pattern 11 is single or multiple, the height difference between the maximum height and the minimum height in all the patterns 11 defines a height difference, and the height difference is between 0.05 mm and 0.15 mm; wherein the height difference is equivalent to a manufacturing error range; in other words, through the relevant features of the pattern 11 described in the full text of the present invention and the steps and values associated with forging, the club head pattern forming method proposed by the present invention can produce a club head pattern with higher structural strength and stable quality within a better error range (corresponding to the height difference).

According to the above-mentioned club head texture forming method, the texture 11 can have various implementations. Table 2 below shows the dimensions of three different implementations of the texture 11. It should be noted that the listed texture dimensions are not for The present invention is limited to this.

It should be noted that although the pattern 11 shown in Figures 1 and 2 of the present invention is a roughly parallel straight line pattern, the pattern 11 can be changed into a curve or an arbitrary shape configuration based on part or all of the aforementioned relationships among the length L, width W, height H and pitch P.

In addition, it should be noted that in other embodiments of the present invention, the piece to be processed, especially the piece to be processed with the target surface structure, can be processed according to the above-mentioned texture forming step S3 to form corresponding textures. 11. The workpiece with the target surface structure may be produced only by the multi-pass continuous forging step S1, or may be produced by the multi-pass continuous forging step S1 and the fine forging step S2 in sequence.

In summary, the rod head texture forming method of the present invention can improve processing efficiency and material utilization by forming the texture by forging. In addition, through the texture forming step, especially through the combination of any one or more of the forging temperature, forging pressure, texture size, and material defined therein, a target texture with stable structure and good quality can be formed on the workpiece to be processed. In addition, through the multiple consecutive forging steps, processing efficiency can be improved, material loss can be reduced, and the overall strength of the workpiece to be processed can be improved.

Although the present invention has been disclosed using the above preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art may make various changes and modifications to the above embodiments within the spirit and scope of the present invention, and the changes and modifications are still within the technical scope protected by the present invention. Therefore, the protection scope of the present invention shall include all changes within the meaning and equivalent scope recorded in the attached patent application scope.

S1: Multiple consecutive forging steps

S11: First heating step

S12: First forging step

S13: The first trimming step

S2: Fine forging steps

S21: Second heating step

S22: Second forging step

S23: Second trimming step

S3: Texture forming step

S31: Molding heating step

S32: Texture forging steps

Claims (9)

A rod head texture forming method comprises: a texture forming step, which sequentially comprises: a forming heating step, heating a workpiece having a target surface structure to a texture forming temperature, wherein the texture forming temperature is between 750 degrees Celsius and 925 degrees Celsius; and a texture forging step, applying 60 Forging is performed with an applied weight of 0 to 800 tons to obtain a finished forged part having at least one texture, the at least one texture protruding from the surface of the formed forged part, the at least one texture having a length, a width and a height, the length is not less than the width, the width is not less than 0.25 mm, and the height is between 0.10 mm and 0.30 mm. As in claim 1, the rod head texture forming method, wherein the workpiece to be processed with the target surface structure is first produced by a multi-pass continuous forging step; the multi-pass continuous forging step sequentially includes a first heating step, a first forging step and a first trimming step; in the first heating step, the workpiece to be processed is heated to a first temperature; in the first forging step, the workpiece to be processed heated to the first temperature is subjected to multi-pass continuous forging to obtain the workpiece to be processed after multi-pass continuous forging; in the first trimming step, the workpiece to be processed is trimmed to form the workpiece to be processed with the target surface structure. The club head texture forming method of claim 1, wherein the piece to be processed with the target surface structure is produced by a multi-pass continuous forging step and a fine forging step in sequence; the multi-pass continuous forging step The steps include a first heating step, a first forging step and a first trimming step in sequence; in the first heating step, a workpiece to be processed is heated to a first temperature; in the first forging step In the process, the workpiece to be processed heated to the first temperature is subjected to multiple passes of continuous forging to obtain the part to be processed that has been forged in multiple passes; in the first trimming step, the workpiece to be processed is The piece is trimmed to form the trimmed piece to be processed; and the fine forging steps are performed in sequence It includes a second heating step, a second forging step and a second trimming step; in the second heating step, the material to be processed is heated to a second temperature; in the second forging step, the aforementioned The material to be processed heated to the second temperature is subjected to a fine forging to obtain the finely forged piece to be processed; in the second trimming step, the piece to be processed is trimmed to form a shape with the The target surface structure of the workpiece to be processed. The club head texture forming method of claim 2 or 3, wherein the multi-pass continuous forging step has at least a first pass of forging and a second pass of forging, and the forging pressure of the second pass of forging is higher than that of the third pass of forging. The forging pressure in each forging is at least 20 tons higher than the applied weight. A rod head texture forming method as claimed in claim 4, wherein the first forging is performed with an applied weight of 500 to 700 tons, the second forging is performed with an applied weight of 550 to 750 tons, and the first heating temperature is between 800 degrees Celsius and 900 degrees Celsius. For example, the club head texture forming method of claim 1, wherein the width is between 0.25mm and 2.00mm, and the height is between 0.10mm and 0.15mm. For example, the club head texture forming method of claim 1, wherein the ratio of the height divided by the width defines an aspect ratio not greater than 1.2. For example, the club head texture forming method of claim 7, wherein the aspect ratio is not greater than 0.6. The club head texture forming method as claimed in any one of items 1 to 3, wherein the at least one texture protrudes from the surface of the shaped forging, the at least one texture has a height, and the height difference between the at least one texture and the whole distance is The system is between 0.05mm and 0.15mm.

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