TWI412413B - Screw-manufacturing method - Google Patents
Screw-manufacturing method Download PDFInfo
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- TWI412413B TWI412413B TW99111197A TW99111197A TWI412413B TW I412413 B TWI412413 B TW I412413B TW 99111197 A TW99111197 A TW 99111197A TW 99111197 A TW99111197 A TW 99111197A TW I412413 B TWI412413 B TW I412413B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 25
- 238000005242 forging Methods 0.000 claims description 14
- 210000001161 mammalian embryo Anatomy 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 5
- 238000010273 cold forging Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 3
- 238000005096 rolling process Methods 0.000 description 6
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
Description
本發明係關於一種螺絲製造方法；特別是關於一種螺絲製造方法在螺牙滾軋成型製程[thread-rolling process]中一併調整裁切一螺桿[screw rod]之長度。The present invention relates to a method of manufacturing a screw; and more particularly to a method of manufacturing a screw in which a length of a screw rod is adjusted in a thread-rolling process.
一般而言，習用螺絲製造方法可製造各種不同的螺桿長度規格，且其包含已發展各種螺桿長度之相關應用技術。舉例而言，中華民國公告第M291851號之「螺絲長度選取裝置」新型專利，其揭示一種螺絲長度選取裝置，用以選取一最佳化螺絲長度，以將不同厚度的夾層有效地鎖固於不同的立柱上方，且這些不同的立柱可能需要提供不同的螺絲攻牙深度或不同長度規格的螺桿長度之需求。In general, conventional screw manufacturing methods can be manufactured in a variety of different screw length specifications, and include related application techniques that have developed various screw lengths. For example, the Republic of China Announcement No. M291851, "Roll Length Selection Device", discloses a screw length selection device for selecting an optimized screw length to effectively lock different thickness interlayers. Above the uprights, and these different uprights may need to provide different screw tapping depths or screw lengths of different length gauges.
然而，相對於螺桿之正常長度，當螺桿長度為過短或其它特殊規格的螺桿長度時，其通常在螺絲製造上具有許多技術困難。舉例而言，當螺絲胚[screw blank]之螺桿長度過短時，該螺絲胚往往不易以正確螺桿方向自動送入至一螺牙滾軋成型機[thread rolling machine]或其它加工機器，因而前述習用螺絲製造方法具有降低生產效率的缺點。However, with respect to the normal length of the screw, when the length of the screw is too short or other special specifications of the length of the screw, it usually has many technical difficulties in the manufacture of the screw. For example, when the length of the screw of the screw blank is too short, the screw is often not easily fed into the screw rolling machine or other processing machine in the correct screw direction. Conventional screw manufacturing methods have the disadvantage of reducing production efficiency.
另外，先將螺絲製成正常螺桿長度，在後續加工步驟中再以適當加工機器將該螺絲裁切至一預定螺桿長度，其亦包含過短或其它特殊規格的螺桿長度。然而，該螺絲製造方法具有額外增加裁切螺桿長度的加工步驟，因此前述習用螺絲製造方法顯然具有螺絲製程複雜的缺點。In addition, the screw is first formed into a normal screw length, and the screw is cut to a predetermined screw length by a suitable processing machine in a subsequent processing step, which also includes a screw length that is too short or other special specifications. However, this screw manufacturing method has a processing step of additionally increasing the length of the cutting screw, and thus the aforementioned conventional screw manufacturing method obviously has the disadvantage that the screw manufacturing process is complicated.
簡言之，習用螺絲製造方法並不適用於大量生產特殊規格螺桿長度之螺絲，因此有必要進一步改良其製造方法，以改善前述製程複雜、增加能消耗能源及增加製造成本的缺點。換言之，習用各種合金螺絲製造方法必然存在需要提供更適合量產的製程方法之潛在需求。In short, the conventional screw manufacturing method is not suitable for mass production of screw with special specification screw length, so it is necessary to further improve the manufacturing method to improve the aforementioned process complexity, increase energy consumption and increase manufacturing cost. In other words, the conventional method of manufacturing various alloy screws necessarily has the potential need to provide a process method that is more suitable for mass production.
有鑑於此，本發明為了滿足上述需求，其提供一種螺絲製造方法，其將一螺絲胚在螺牙滾軋成型製程中一併調整裁切形成一螺桿長度，以達成簡化螺絲製程及提升生產效率之目的。In view of the above, the present invention provides a screw manufacturing method for adjusting a screw to form a screw length in a screw rolling process to achieve a simplified screw process and improved production efficiency. The purpose.
本發明之主要目的係提供一種螺絲製造方法，其將一螺絲胚在螺牙滾軋成型製程中一併調整裁切形成一螺桿長度，以達成簡化螺絲製程及提升生產效率之目的。The main object of the present invention is to provide a method for manufacturing a screw, which adjusts and cuts a screw in a thread rolling forming process to form a screw length, thereby achieving the purpose of simplifying the screw process and improving the production efficiency.
為了達成上述目的，本發明較佳實施例之螺絲製造方法包含步驟：將一線材或一棒材形成一螺絲頭，以製成一螺絲胚；一螺牙成型/裁切機將該螺絲胚以螺牙成型及裁切製程成型一螺牙及裁切形成一螺桿，且將該螺桿裁切至一預定螺桿長度。In order to achieve the above object, a method for manufacturing a screw according to a preferred embodiment of the present invention includes the steps of: forming a screw or a bar into a screw head to form a screw; a screw forming/cutting machine to the screw The thread forming and cutting process forms a thread and cuts to form a screw, and the screw is cut to a predetermined screw length.
本發明另一較佳實施例之螺絲製造方法包含步驟：將一線材或一棒材形成一螺絲頭，以製成一螺絲胚；一螺牙成型/裁切機將該螺絲胚以螺牙成型及裁切製程先進行成型一螺牙後，再進行裁切形成一螺桿，且將該螺桿裁切至一預定螺桿長度。A screw manufacturing method according to another preferred embodiment of the present invention comprises the steps of: forming a screw or a bar into a screw head to form a screw embryo; and a screw forming/cutting machine molding the screw embryo with a screw And the cutting process first forms a screw, then cuts to form a screw, and cuts the screw to a predetermined screw length.
本發明另一較佳實施例之螺絲製造方法包含步驟：將一線材或一棒材形成一螺絲頭，以製成一螺絲胚；一螺牙成型/裁切機將該螺絲胚以裁切及螺牙成型製程先進行裁切形成一螺桿，再進行成型一螺牙，且將該螺桿裁切至一預定螺桿長度。A screw manufacturing method according to another preferred embodiment of the present invention comprises the steps of: forming a screw or a bar into a screw head to form a screw; and a screw forming/cutting machine to cut the screw. The screw forming process first cuts a screw to form a screw, and cuts the screw to a predetermined screw length.
本發明較佳實施例之螺絲製造方法利用冷鍛方式處理該線材或棒材製成該螺絲胚。The screw manufacturing method of the preferred embodiment of the present invention processes the wire or bar by cold forging to form the screw.
本發明較佳實施例之螺絲製造方法利用溫鍛或熱鍛方式處理該線材或棒材製成該螺絲胚。The screw manufacturing method of the preferred embodiment of the present invention processes the wire or bar by warm forging or hot forging to form the screw.
本發明較佳實施例之螺絲製造方法利用直接加熱方式進行溫鍛或熱鍛方式處理該線材或棒材製成該螺絲胚。The screw manufacturing method of the preferred embodiment of the present invention uses the direct heating method for warm forging or hot forging to process the wire or bar to form the screw.
本發明較佳實施例之螺絲製造方法利用保溫及直接加熱方式進行溫鍛或熱鍛方式處理該線材或棒材製成該螺絲胚。In the screw manufacturing method of the preferred embodiment of the present invention, the wire or bar is processed by warm forging or direct heating to prepare the screw.
本發明較佳實施例之螺絲製造方法利用直接加熱及保溫方式進行溫鍛或熱鍛方式處理該線材或棒材製成該螺絲胚。The screw manufacturing method of the preferred embodiment of the present invention uses the direct heating and heat preservation method to perform the warming or hot forging treatment of the wire or the bar to form the screw embryo.
本發明較佳實施例之螺絲製造方法另在該螺桿形成一螺尾點部。In the screw manufacturing method of the preferred embodiment of the present invention, a screw tail portion is formed in the screw.
為了充分瞭解本發明，於下文將例舉較佳實施例並配合所附圖式作詳細說明，且其並非用以限定本發明。In order to fully understand the present invention, the preferred embodiments of the present invention are described in detail below and are not intended to limit the invention.
本發明較佳實施例之螺絲製造方法適用於生產各種生產標準，例如：國際標準〔ISO〕、美制〔ANSI〕、日制〔JIS〕、德制〔DIN〕、英制〔BSW〕等，但其並非用以限定本發明之範圍。本發明較佳實施例之螺絲製造方法適用於各種螺絲材料，其包含一般螺絲材料及特殊螺絲材料。舉例而言，一般螺絲材料包含低碳鋼、中碳鋼、合金鋼、銅或不銹鋼等，而特殊螺絲材料包含鎂或鎂合金材料。The screw manufacturing method of the preferred embodiment of the present invention is suitable for producing various production standards, such as: International Standard [ISO], American [ANSI], Japanese [JIS], German [DIN], British [BSW], etc. It is not intended to limit the scope of the invention. The screw manufacturing method of the preferred embodiment of the present invention is applicable to various screw materials, and includes general screw materials and special screw materials. For example, general screw materials include low carbon steel, medium carbon steel, alloy steel, copper or stainless steel, and special screw materials include magnesium or magnesium alloy materials.
第1圖揭示本發明第一較佳實施例之螺絲製造方法之流程圖。請參照第1圖所示，本發明第一較佳實施例之螺絲製造方法係首先在第1執行步驟S1A中，提供一線材或一棒。該線材或棒材係由金屬或其合金製成，且該線材或棒材具有適當直徑，以形成一螺絲元件。Fig. 1 is a flow chart showing a method of manufacturing a screw according to a first preferred embodiment of the present invention. Referring to Fig. 1, the screw manufacturing method of the first preferred embodiment of the present invention first provides a wire or a rod in the first execution step S1A. The wire or rod is made of metal or an alloy thereof, and the wire or rod has an appropriate diameter to form a screw element.
請再參照第1圖所示，本發明第一較佳實施例之螺絲製造方法係接著在第2執行步驟S2A中，將該線材或棒材以適當技術形成一螺絲頭，以製成一螺絲胚〔screw blank〕。本發明較佳實施例之螺絲製造方法利用冷鍛方式處理該線材或棒材製成該螺絲胚，但其並非用以限制本發明之範圍。Referring to FIG. 1 again, the screw manufacturing method of the first preferred embodiment of the present invention is followed by forming a screw head by a suitable technique in a second execution step S2A to form a screw. "screw blank". The screw manufacturing method of the preferred embodiment of the present invention processes the wire or bar by cold forging to form the screw, but it is not intended to limit the scope of the present invention.
在第2執行步驟S2A中，本發明另一較佳實施例之螺絲製造方法利用直接加熱方式進行溫鍛或熱鍛方式處理該線材 或棒材製成該螺絲胚，但其並非用以限制本發明之範圍。將該線材或棒材送入通過一加熱器〔heater〕，以便將該線材或棒材進行直接加熱處理至一預定溫度。In the second execution step S2A, the screw manufacturing method according to another preferred embodiment of the present invention performs the warm forging or hot forging treatment of the wire by direct heating. The rod is made of a rod, but it is not intended to limit the scope of the invention. The wire or rod is fed through a heater to directly heat the wire or rod to a predetermined temperature.
在第2執行步驟S2A中，本發明另一較佳實施例之螺絲製造方法採用溫鍛或熱鍛方式時，利用保溫及直接加熱方式處理該線材或棒材，或利用直接加熱及保溫方式處理該線材或棒材。該保溫處理係利用一保溫材料〔thermal isolating material〕塗覆於該線材或棒材上，以防止該線材或棒材在加熱後發生熱量流失〔heat loss〕至外界，且該保溫材料係選自一無機材料或一有機材料。舉例而言，該無機材料係選自石墨〔graphite〕或氮化硼〔BN〕，但其並非用以限制本發明之範圍。In the second execution step S2A, when the screw manufacturing method according to another preferred embodiment of the present invention adopts warm forging or hot forging, the wire or the bar is treated by heat preservation and direct heating, or is treated by direct heating and heat preservation. The wire or bar. The thermal insulation treatment is applied to the wire or the bar by using a thermal isolating material to prevent heat loss of the wire or the bar to the outside after heating, and the thermal insulation material is selected from the group consisting of An inorganic material or an organic material. For example, the inorganic material is selected from graphite or boron nitride [BN], but it is not intended to limit the scope of the invention.
請再參照第1圖所示，在第2執行步驟S2A中，將在該線材或棒材上利用一螺絲頭成型機〔screw heading machine〕成型該螺絲頭。該線材或棒材在成型該螺絲頭時，利用頭部鍛造成型方式〔head-forging manner〕將該線材或棒材製成該螺絲胚，且在該螺絲胚上形成該螺絲頭。Referring to Fig. 1 again, in the second execution step S2A, the screw head is formed on the wire or the bar by a screw heading machine. When the wire or the bar is molded, the wire or the bar is made into the screw by a head-forging manner, and the screw head is formed on the screw.
舉例而言，本發明較佳實施例之該螺絲頭之螺絲頭型可製成岡山頭〔cheese head〕、B頭〔binding head〕、P頭〔pan head〕、傘頭〔truss head〕、F頭〔flat head〕、O頭〔oval head〕、六角頭〔hexagon head〕、六角墊圈頭〔hexagon washer head〕、P墊圈頭〔pan washer head〕等，但其並非用以限定本發明之範圍。另外，本發明較佳實施例之該螺絲頭10之螺絲槽型可製成一字槽〔slotted type〕、十字槽〔Phillips recess type〕、方型槽〔square socket type〕、內六角槽〔hexagon type〕、凹穴六角槽〔indented hexagon type〕、一字/方型槽〔slotted & square socket type〕、一字/十字槽〔slotted & Phillips combination type〕、切平六角槽〔plane hexagon type〕、工字槽〔H type〕、TX抽心槽〔TX tamper resistant type〕、一字槽〔slotted type〕、一字槽〔slotted type〕、TX槽〔TX type〕及米字槽〔PZ drive type〕等，但其並非用以限定本發明之範圍。For example, in the preferred embodiment of the present invention, the screw head type of the screw head can be made into a cheese head, a binding head, a pan head, a truss head, and a F A flat head, an oval head, a hexagon head, a hexagon washer head, a pan washer head, etc., but are not intended to limit the scope of the invention. In addition, in the preferred embodiment of the present invention, the screw groove type of the screw head 10 can be formed into a slotted type, a Phillips recess type, a square socket type, and a hexagon socket (hexagon). Type], indented hexagon type, slotted & square socket type, slotted & Phillips combination type, flat hexagonal groove Hexagon type], H type, TX tamper resistant type, slotted type, slotted type, TX slot, and word slot PZ drive type] and the like, but it is not intended to limit the scope of the invention.
請再參照第1圖所示，本發明第一較佳實施例之螺絲製造方法係接著在第3執行步驟S3A中，將該螺絲胚以螺牙成型及裁切製程進行成型一螺牙及裁切形成一螺桿，即該螺牙及螺桿形成，且將該螺桿裁切至一預定螺桿長度。在進行裁切該螺桿時，在該螺桿形成一螺尾點部〔point〕。Referring to FIG. 1 again, the screw manufacturing method of the first preferred embodiment of the present invention is followed by the screwing and forming process of the screw embryo in the third execution step S3A. A screw is formed, that is, the screw and the screw are formed, and the screw is cut to a predetermined screw length. When the screw is cut, a screw point is formed in the screw.
在第3執行步驟S3A中，將在該螺絲胚上利用一螺牙成型/裁切機〔thread rolling/cutting machine〕成型該螺牙及螺尾點部，即該螺牙、螺桿及螺尾點部一併形成，該螺牙成型/裁切機係利用一複合模具達成螺牙成型/螺桿裁切作業。本發明較佳實施例之該線材或棒材在成型該螺牙及螺尾點部時，利用螺牙滾軋成型方式〔thread-rolling manner〕在該螺絲胚上形成該螺牙及螺尾點部，以製成一螺絲成品。In the third execution step S3A, the thread and the screw tail point portion, that is, the screw thread, the screw thread and the screw tail point, are formed on the screw embryo by a thread rolling/cutting machine. The part is formed together, and the screw forming/cutting machine uses a composite mold to achieve screw forming/screw cutting work. In the wire rod or the bar of the preferred embodiment of the present invention, the thread and the screw tail are formed on the screw embryo by a thread-rolling manner when the thread and the screw tail portion are formed. Department to make a finished screw.
舉例而言，本發明較佳實施例之該螺絲胚上形成自攻螺絲的單牙〔single thread〕、雙牙〔double thread〕、高低牙〔high-low thread〕或三角牙〔tri-lobular thread〕等，但其並非用以限定本發明之範圍。For example, in the preferred embodiment of the present invention, a single thread, a double thread, a high-low thread, or a tri-lobular thread are formed on the screw embryo. And the like, but it is not intended to limit the scope of the invention.
舉例而言，本發明較佳實施例之該螺尾點部包含：倒角點〔chamfer point〕、錐點〔cone point〕、吉姆利特點〔gimlet point〕、頭點〔header point〕、釘點〔nail point〕、針點〔needle point〕、橢圓形點〔oval point〕、試驗點〔pilot point〕、夾點〔pinch point〕及球形點〔spherical point〕，但其並非用以限定本發明之範圍。For example, in the preferred embodiment of the present invention, the screw tail portion includes: a chamfer point, a cone point, a gimlet point, a head point, and a nail point. [nail point], needle point, oval point, pilot point, pinch point, and spherical point, but it is not intended to limit the present invention. range.
最後，在該螺絲成品上可適當進行表面處理〔surface treatment〕，但其並非用以限定本發明之範圍。Finally, surface treatment can be suitably performed on the finished screw, but it is not intended to limit the scope of the invention.
第2圖揭示本發明第二較佳實施例之螺絲製造方法之流程圖。請參照第2圖所示，第二較佳實施例之螺絲製造方法之執行步驟S1B、S2B完全相同於第一較佳實施例之螺絲製造方法之執行步驟S1A、S2A，第二較佳實施例之執行步驟S1B、S2B可併入參考第一較佳實施例，於此不予贅述。Fig. 2 is a flow chart showing a method of manufacturing a screw according to a second preferred embodiment of the present invention. Referring to FIG. 2, the steps S1B and S2B of the screw manufacturing method of the second preferred embodiment are identical to the steps S1A and S2A of the screw manufacturing method of the first preferred embodiment. The second preferred embodiment The execution steps S1B, S2B can be incorporated into the first preferred embodiment, and details are not described herein.
請再參照第2圖所示，本發明第二較佳實施例之螺絲製造方法係在第3執行步驟S3B中，將該螺絲胚以裁切及螺牙成型製程先進行裁切形成一螺桿，再進行成型一螺牙及一螺尾點部，且將該螺桿裁切至一預定螺桿長度。Referring to FIG. 2 again, the screw manufacturing method according to the second preferred embodiment of the present invention is performed in the third execution step S3B, and the screw embryo is first cut by a cutting and screw forming process to form a screw. A screw and a screw tail are formed, and the screw is cut to a predetermined screw length.
第3圖揭示本發明第三較佳實施例之螺絲製造方法之流程圖。請參照第3圖所示，第三較佳實施例之螺絲製造方法之執行步驟S1C、S2C完全相同於第一較佳實施例之螺絲製造方法之執行步驟S1A、S2A，第三較佳實施例之執行步驟S1C、S2C可併入參考第一較佳實施例，於此不予贅述。Fig. 3 is a flow chart showing a method of manufacturing a screw according to a third preferred embodiment of the present invention. Referring to FIG. 3, the steps S1C and S2C of the screw manufacturing method of the third preferred embodiment are identical to the steps S1A and S2A of the screw manufacturing method of the first preferred embodiment. The third preferred embodiment The steps S1C and S2C may be incorporated into the first preferred embodiment, and details are not described herein.
請再參照第3圖所示，相對於本發明第二較佳實施例，本發明第三較佳實施例之螺絲製造方法係在第3執行步驟S3C中，將該螺絲胚以裁切及螺牙成型製程先進行裁切形成一螺桿，再進行成型一螺牙及一螺尾點部，且將該螺桿裁切至一預定螺桿長度。Referring to FIG. 3 again, with respect to the second preferred embodiment of the present invention, the screw manufacturing method of the third preferred embodiment of the present invention is in the third execution step S3C, the screw is cut and screwed. The tooth forming process first cuts a screw to form a screw and a screw tail, and cuts the screw to a predetermined screw length.
前述較佳實施例僅舉例說明本發明及其技術特徵，該實施例之技術仍可適當進行各種實質等效修飾及/或替換方式予以實施；因此，本發明之權利範圍須視後附申請專利範圍所界定之範圍為準。The foregoing preferred embodiments are merely illustrative of the invention and the technical features thereof, and the techniques of the embodiments can be carried out with various substantial equivalent modifications and/or alternatives; therefore, the scope of the invention is subject to the appended claims. The scope defined by the scope shall prevail.
S1A、S2A、S3A．．．執行步驟S1A, S2A, S3A. . . Steps
S1B、S2B、S3B．．．執行步驟S1B, S2B, S3B. . . Steps
S1C、S2C、S3C．．．執行步驟S1C, S2C, S3C. . . Steps
第1圖：本發明第一較佳實施例之螺絲製造方法之流程圖。Fig. 1 is a flow chart showing a method of manufacturing a screw according to a first preferred embodiment of the present invention.
第2圖：本發明第二較佳實施例之螺絲製造方法之流程圖。Fig. 2 is a flow chart showing a method of manufacturing a screw according to a second preferred embodiment of the present invention.
第3圖：本發明第三較佳實施例之螺絲製造方法之流程圖。Fig. 3 is a flow chart showing a method of manufacturing a screw according to a third preferred embodiment of the present invention.
S1A．．．執行步驟S1A. . . Steps
S2A．．．執行步驟S2A. . . Steps
S3A．．．執行步驟S3A. . . Steps
Claims (9)
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| TW99111197A TWI412413B (en) | 2010-04-12 | 2010-04-12 | Screw-manufacturing method |
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| TW99111197A TWI412413B (en) | 2010-04-12 | 2010-04-12 | Screw-manufacturing method |
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| TW201134573A TW201134573A (en) | 2011-10-16 |
| TWI412413B true TWI412413B (en) | 2013-10-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW200827070A (en) * | 2006-12-28 | 2008-07-01 | Yung Ming Entpr Co | Bolt forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW200827070A (en) * | 2006-12-28 | 2008-07-01 | Yung Ming Entpr Co | Bolt forming method |
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