TWI321502B - Powdered metal multi-lobular tooling and method of fabrication - Google Patents

Powdered metal multi-lobular tooling and method of fabrication Download PDF

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Publication number
TWI321502B
TWI321502B TW094109645A TW94109645A TWI321502B TW I321502 B TWI321502 B TW I321502B TW 094109645 A TW094109645 A TW 094109645A TW 94109645 A TW94109645 A TW 94109645A TW I321502 B TWI321502 B TW I321502B
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Taiwan
Prior art keywords
tool
manufacturing
predetermined length
lobed
speed steel
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TW094109645A
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Chinese (zh)
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TW200602138A (en
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Edward Kletecka
Sean Kurtz
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Acument Ip Llc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/20—Making working faces of dies, either recessed or outstanding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B21K1/463—Making machine elements bolts, studs, or the like with heads with recessed heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/04—Making metal objects by operations essentially involving machining but not covered by a single other subclass involving slicing of profiled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Forging (AREA)
  • Drilling Tools (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Description

1321502 . (1) 九、發明說明 【發明所屬之技術領域】 本發明一般來說係關於多瓣狀工具，用於將一多瓣狀 凹穴衝入工件內，例如衝入緊扣件的頭部內。更明確地 說，本發明係關於由粉末金屬形成的多瓣狀工具以及工具 胚件（blank)。本發明亦關於一種形成粉末金屬多瓣狀工具 的方法。 【先前技術】 多瓣狀工具，一般被稱爲 '' 衝頭銷〃，用於將一多瓣 狀凹穴衝入工件內，例如衝入緊扣件的頭部內。圖1顯示 —多瓣狀衝頭銷10。在使用時，衝頭銷〗〇的頭部12，就 是具有多瓣狀外形的頭部，係被衝入一工件內，例如緊扣 件的頭部內，以便形成一多瓣狀凹穴。 一般來說，衝頭銷是由標準工具鋼形成的，例如M42 • 工具鋼β工具鋼的本性是非常的不均勻，且一般含有大量 且離析的碳化物。圖2提供由Μ42工具鋼所形成的衝頭 銷之影像，其中此影像是藉由顯微鏡以400倍的放大率且 沿著一橫貫剖面（就是沿著圖1中的線2)而拍攝出來的。 圖3也是一類似的影像，但卻是沿著一縱向剖面（就是沿 著圖1中的線3)而拍攝出來的。如圖所示，許多的碳化 物（影像中較淡的區域）非常龐大，且沿著任一剖面均可以 發現得到。至於尺寸，在由傳統工具鋼所形成的衝頭銷 中，通常會存在]〇至50微米或更大的碳化物。 -4- ⑧ (2) (2)1321502 離析碳化物的存在會傾向產生一堅硬、易碎或脆弱的 平面，其中材質具有斷裂或碎裂的傾向。一般來說，衝頭 銷最好不要含有大量的碳化物以及離析的碳化物，這是由 於碳化物會產生脆弱點。假如恰好沿著多瓣狀衝頭銷的一 葉片部位存在有相當大量碳化物的話，則上述情形會格外 明顯。在這樣的情形下，如圖4所示，在使用期間，碳化 物可使此葉片部位比預期還早形成碎片。圖4提供一由 M42工具鋼所形成的衝頭銷之影像，其中此影像是藉由顯 微鏡掃瞄式電子顯微鏡（SEM)以35倍的放大率拍攝出來 的，且在已經使用衝頭銷將多瓣狀凹穴衝入工件經過了相 當大量的次數之後。當大量碳化物存在於衝頭銷的葉片部 位時，不僅可能存在上述的問題，而且當衝頭銷越大時， 這個問題會變得更加嚴重。 美國專利第65 3 748 7號案揭示一種模製粉末金屬的方 法，係使用金屬射出模製（MIM)的程序。這樣的程序相當 複雜，且使用黏結劑。在燒結期間，或在燒結之前·，必須 去除此黏結劑（就是去黏結步驟de-binding)。以這樣方法 製成的最終製品一般來說只具有9 5 -98%的密度，且具有 減弱的柱強度（column strength)及有限的耐撞擊性。 【發明內容】 本發明的目的是要提供一種由粉末金屬形成的多瓣狀 工具以及工具原件，藉此產生的工具質地非常均勻，且僅 包含具有相當少的碳化物。 -5- ⑧ (3) (3) 丄321502 本發明的另一目的是要提供一種相當簡單的方法，用 以製造多瓣狀粉末金屬工具，其中此方法不論在燒結之前 或燒結期間，均不需要任何去黏結步驟。 簡言之’且根據上述目的之至少一項，本發明的實施 例提供一種粉、末金屬製成的工具，例如呈粉末形式的改良 (就是其中添加鉬）T15高速鋼HSS，且具有一多瓣狀末端 外形’用以將多瓣狀凹穴衝入工件內，例如衝入緊扣件的 頭部內。 本發明的另一實施例提供一種粉末金屬製成的工具之 製造方法’其中此工.具具有多瓣狀末端外形。此方法包含 以下步驟：從一粉末金屬所形成的棒切下—預定長度，此 粉末金屬例如改良τ 1 5 H S S (就是其中添加鉬）；對兩端施 加47° /45°的倒角；將其外徑硏磨至一預定尺寸；塗上 油且在固定至衝壓機內的一擠壓模中將該切下部位的一端 濟壓出一多瓣狀結構；在一熱處理爐中對此部位施以應力 消除；將一商標製造在此部位上；將其外徑延磨至一預定 尺寸；處理此部位的表面到一預定的長度；修出一鼻角； 施以熱處理至一預定硬度；硏磨鼻角以便達到想要的最終 加工與長度；硏磨其外徑至一預定的尺寸與長度；且將鼻 角拋光至想要的最終程度。 【實施方式】 本發明可允許不同形式出現的實施例，這些實施例顯 不在附圖內，將於下文中加以詳細說明。要知道的是，此 * 6 - . (4) 1321502 說明係用以解釋本發明的原理，並非用以侷限本發明。 如上所述，圖2-4係關於由M42工具鋼所形成的衝 頭銷。圖5_7提供類似的圖形，但是卻關於一種多瓣狀工 具，特別是由粉末形式的改良（其中添加鉬）T 15 HSS所形 成之衝頭銷，係根據本發明的一實施例。由於是粉末金屬 所形成的，此衝頭銷會更加均勻且僅含一些碳化物（圖5 與6所示影像中較淡的區域），相較於由工具鋼形成的衝 φ 頭銷中所包含的碳化物來說，本發明含有的碳化物相當 少。由於質地更加均勻且僅含有相當少量的碳化物，所以 此衝頭銷非常堅硬，且在使用期間不容易碎裂或產生缺陷 (就是例如在衝壓凹穴至緊扣件的頭部內的期間）° 圖5提供一影像，顯示由粉末形式的改良 Tl 5 HSS 所形成之衝頭銷，係根據本發明的一實施例’其中此影像 是藉由顯微鏡以400倍的放大率且沿著一橫貫剖面（就是 沿著圖1中的線2)而拍攝出來的。圖6是一類似圖5的 φ 影像，但卻是沿著一縱向剖面（就是沿著圖1中的線3)而 拍攝出來的。相較於圖2與3中所示工具鋼衝頭銷內存在 的碳化物來說，圖5與6所示的碳化物（影像中較淡的區 域）則相當少。明確地說，工具鋼製成的衝頭銷內存在之 碳化物可以是40微米以上’然而粉末金屬形成的衝頭銷 (例如粉末金屬形成的改良T】5 HSS)內存在之碳化物則少 至1-4微米。 圖7提供此衝頭銷的影像’其中此影像是藉由掃瞄式 電子顯微鏡（SEM)以50倍的放大率拍攝出來的’且在已 -7- d (5) 1321502 經使用衝頭銷將多瓣狀凹穴衝入工件經過了相當多次數之 後。比較圖7與圖4，此粉末金屬製成衝頭銷（圖7)僅產 生可允許的磨損而沒有碎裂，然而工具鋼製成的衝頭銷 (圖4)則在一葉片部位產生一些碎裂。 由於大量的碳化物會產生脆弱點，且例如衝頭銷的多 瓣狀工具之葉片部位在撞擊期間會承受大量的應力，因此 在多瓣狀工具的一葉片部位上，必須確保不能存在有大量 φ 的碳化物，這一點相當重要。一般來說，例如衝頭銷的多 瓣狀工具是由非常不均勻的工具鋼所形成的。假如此多瓣 狀工具改由粉末金屬（例如粉末形式的改良T15 HSS)製成 的話，則此部位的晶粒結構就會變得更加均勻。就其本身 而言，幾乎不可能或甚至毫無可能，大量的碳化物不會存 在於這些葉片部位的區域內，或是其中一葉片部位內。因 此’衝頭銷會更加堅硬且具有增進的柱強度及耐撞擊性， 且會具有更長的使用壽命。 # 圖8顯示一種製造粉末金屬多瓣狀工具的方法，此多 瓣狀工具就如圖5 ·7所示的衝頭銷，其中此方法係根據本 發明的一實施例。如圖所示，此方法包含以下步驟：從— 粉末金屬所形成的棒材料切下一預定長度的棒，此粉末金 屬例如改良Tl 5 HSS (就是其中添加鉬）；對兩端施加47。 /4 5°的倒角；將其外徑硏磨至一預定尺寸；塗上油且在 固定至衝壓機內的一擠壓模中將該切下部位的一端擠壓出 —多瓣狀結構·’在一熱處理爐中對此部位施以應力消除； 將一商標製造在此部位上；將其外徑延磨至—預定尺寸； -8- (6) (6)1321502 處理此部位的表面到一預定的長度；修出一鼻角；.施以熱 處理至一預定硬度；硏磨鼻角以便達到想要的最終程度與 長度；硏磨其外徑至一預定的尺寸與長度；且將鼻角拋光 至想要的最終程度。此方法相當簡單，且不需要任何去黏 結步驟；本方法有別於金屬射出模製成型法，金屬射出模 製成型法在燒結期間或燒結以前必須去除黏結劑。藉由這 類的金屬射出模製成型法所製成之最終部位一般只有95-98%的密度。相較之下，由上述本方法所製造的最終部位 理論上爲100%的密度，且具有增進的柱強度、耐撞擊性 及工具使用壽命。 在執行上述製造步驟之前，爲了準備粉末鋼棒，必須 使用以下的處理： 使具有適當組成的熔融金屬在一惰性氣體中分裂成原 子狀。 將所產生的粉末金屬密封於一大型鋼 '"罐"中’此鋼 罐乃是一鋼管’長5到6呎’直徑爲1 〇到1 2英吋& 將此密封的鋼罐放置於—熱均壓機（HIP_ hot isostatic press)內，此熱均壓機在2100F的溫度下可以施加1000倍 標準大氣壓力。 在HIP步驟之後’將此鋼罐切削加工成實心且密度爲 100%的？_1^1.錠。 此P.M.鍊然後進行類似習知澆注錠的處理。 雖然已經顯示並說明了本發明的一些實施例’但是可 想而知在不背離本發明的精神與範圍之情形下’對於熟知 -9- ⑧ (7) (7)1321502 此項技術者來說，本發明仍可以產生出許多修改。 【圖式簡單說明】 圖1是一立體圖，顯示一多瓣狀衝頭銷； 圖2提供由M42工具鋼所形成的衝頭銷之影像，其 中此影像是藉由顯微鏡以400倍的放大率且沿著一橫貫剖 面（就是沿著圖1中的線2)而拍攝出來的； 圖3是一類似圖2的影像，但卻是沿著一縱向剖面 (就是沿著圖1中的線3)而拍攝出來的； 圖4提供一由M42工具鋼所形成的衝頭銷之影像， 其中此影像是藉由掃瞄式電子顯微鏡（SEM)以35倍的放 大率拍攝出來的，且在已經使用衝頭銷將多瓣狀凹穴衝入 工件經過了相當多次數之後； 圖5提供一影像，顯示由粉末形式的改良T15 HSS 所形成之衝頭銷，係根據本發明的一實施例，其屮此影像 是藉由顯微鏡以400倍的放大率且沿著—橫貫剖面（就是 沿著圖1中的線2)而拍攝出來的； 圖6是一類似圖5的影像，但卻是沿著一縱向剖面 (就是沿著圖1中的線3)而拍攝出來的； 圖7.提供一影像’顯示由粉末形式的改良TI5 HSS 所形成之衝頭銷’其中此影像是藉由掃猫式電子顯微鏡 (SEM)以50倍的放大率拍攝出來的’且在己經使用衝頭 銷將多瓣狀凹穴衝入工件經過了相當多次數之後；及 圖8是一流程圖’顯示一種製造如衝頭銷的多瓣狀工 -10- (8)1321502 具之方法，其中此方法係根據本發明的一實施例 【主要元件符號說明】 10 衝頭削 12 頭部1321502 . (1) EMBODIMENT OF THE INVENTION [Technical Field of the Invention] The present invention relates generally to a multi-lobed tool for rushing a multi-lobed pocket into a workpiece, such as a head that snaps into a fastener. Inside the department. More specifically, the present invention relates to a multi-lobed tool formed of powdered metal and a tool blank. The invention also relates to a method of forming a powder metal multi-lobed tool. [Prior Art] A multi-lobed tool, commonly referred to as a ''punch pin', is used to punch a multi-lobed pocket into a workpiece, such as into the head of a fastener. Figure 1 shows a multi-lobed punch pin 10. In use, the head 12 of the punch pin is a head having a multi-lobed shape that is flushed into a workpiece, such as the head of a fastener, to form a multi-lobed pocket. In general, punch pins are formed from standard tool steels, such as M42. • Tool steels beta tool steels are very non-uniform and generally contain large amounts of segregated carbide. Figure 2 provides an image of a punch pin formed from Μ42 tool steel, which is imaged by a microscope at a magnification of 400 times and along a transverse section (i.e., along line 2 in Figure 1). . Figure 3 is also a similar image, but taken along a longitudinal section (i.e., along line 3 in Figure 1). As shown, many of the carbides (lighter areas in the image) are very large and can be found along any section. As for the size, in the punch pin formed of the conventional tool steel, there is usually a carbide of 〇 to 50 μm or more. -4- 8 (2) (2) 1321502 The presence of carbides tends to produce a hard, brittle or fragile plane in which the material has a tendency to break or chip. In general, it is preferable that the punch pin does not contain a large amount of carbides and segregated carbides because the carbides generate a weak point. This situation is particularly noticeable if there is a substantial amount of carbide along a blade portion of the multi-lobed punch pin. In such a case, as shown in Fig. 4, during use, the carbide can cause the blade portion to form fragments earlier than expected. Figure 4 provides an image of a punch pin formed from M42 tool steel, which was taken at a magnification of 35 times by a microscope scanning electron microscope (SEM) and has been used with a punch pin The multi-lobed pockets rush into the workpiece after a considerable number of passes. When a large amount of carbide is present in the blade portion of the punch pin, not only the above problem may occur, but also the problem becomes more serious when the punch pin is larger. U.S. Patent No. 6,533,748 discloses a method of molding powdered metal using a metal injection molding (MIM) procedure. Such procedures are quite complex and use a binder. This binder must be removed during sintering or prior to sintering (ie de-binding). The final article made in this manner generally has a density of only 9 5 - 98% and has a reduced column strength and limited impact resistance. SUMMARY OF THE INVENTION It is an object of the present invention to provide a multi-lobed tool formed from powdered metal and a tool original whereby the resulting tool is very uniform in texture and contains only a relatively small amount of carbide. -5- 8 (3) (3) 丄321502 Another object of the present invention is to provide a relatively simple method for manufacturing a multi-lobed powder metal tool, wherein the method is neither before or during sintering. Any debinding step is required. Briefly, and in accordance with at least one of the above objects, embodiments of the present invention provide a tool made of powder or a metal, such as a modified powder form (that is, molybdenum added thereto) T15 high speed steel HSS, and having a plurality of The lobed end profile 'is used to punch a multi-lobed pocket into the workpiece, such as into the head of the fastener. Another embodiment of the present invention provides a method of manufacturing a tool made of powder metal, wherein the tool has a multi-lobed end profile. The method comprises the steps of: cutting from a rod formed of a powder metal, a predetermined length, such as a modified τ 1 5 HSS (where molybdenum is added); applying a chamfer of 47° / 45° to both ends; The outer diameter is honed to a predetermined size; the oil is coated and one end of the cut portion is pressed out of a multi-petal structure in an extrusion die fixed in the press; Applying stress relief; manufacturing a trademark on the portion; extending the outer diameter to a predetermined size; treating the surface of the portion to a predetermined length; repairing a nose; applying heat treatment to a predetermined hardness; The nose angle is honed to achieve the desired final finish and length; the outer diameter is honed to a predetermined size and length; and the nose angle is polished to the desired final extent. [Embodiment] The present invention may be embodied in various forms, and these embodiments are not shown in the drawings and will be described in detail below. It is to be understood that this is a description of the principles of the invention and is not intended to limit the invention. As noted above, Figures 2-4 relate to a punch pin formed from M42 tool steel. Figure 5-7 provides a similar pattern, but with respect to a multi-lobed tool, particularly a punch pin formed from a modified powder form (with molybdenum added) T 15 HSS, in accordance with an embodiment of the present invention. Due to the powder metal, the punch pin will be more uniform and contain only a few carbides (lighter areas in the image shown in Figures 5 and 6) than in the punched φ head pin formed from tool steel. For the inclusion of carbides, the present invention contains relatively few carbides. Since the texture is more uniform and contains only a relatively small amount of carbide, the punch pin is very stiff and does not easily break or cause defects during use (i.e., during the stamping of the pocket into the head of the fastener) Figure 5 provides an image showing a punch pin formed from a modified Tl 5 HSS in powder form, according to an embodiment of the invention wherein the image is magnified by a microscope at 400 times and along a traverse The profile (that is, along line 2 in Figure 1) was taken. Figure 6 is a φ image similar to Figure 5, but taken along a longitudinal section (i.e., along line 3 in Figure 1). The carbides shown in Figures 5 and 6 (the lighter areas in the image) are considerably less than the carbides present in the tool steel punch pins shown in Figures 2 and 3. Specifically, the carbides in the punch pins made of tool steel can be more than 40 microns. However, the punch pins formed by powder metal (such as the modified T formed by powder metal) 5 HSS have less carbides. To 1-4 microns. Figure 7 provides an image of the punch pin 'where the image was taken at a magnification of 50 times by a scanning electron microscope (SEM)' and the punch pin was used at -7-d (5) 1321502 The multi-lobed pocket is rushed into the workpiece after a considerable number of passes. Comparing Figure 7 with Figure 4, the powder metal made of the punch pin (Figure 7) produces only allowable wear without chipping, whereas the punch pin made of tool steel (Figure 4) produces some at a blade location. Fragmentation. Since a large amount of carbides can create a weak point, and a blade portion of a multi-lobed tool such as a punch pin is subjected to a large amount of stress during an impact, it is necessary to ensure that a large amount cannot exist in one blade portion of the multi-lobed tool. The carbide of φ is quite important. In general, multi-lobed tools such as punch pins are formed from very uneven tool steel. If such a multi-lobed tool is made of powdered metal (for example, modified T15 HSS in powder form), the grain structure at this location will become more uniform. For its part, it is almost impossible or even impossible, and a large amount of carbide does not exist in the area of these blade parts, or in one of the blade parts. Therefore, the punch will be harder and have improved column strength and impact resistance, and will have a longer service life. # Figure 8 shows a method of making a powder metal multi-lobed tool, such as the punch pin shown in Figure 5.7, wherein the method is in accordance with an embodiment of the present invention. As shown, the method comprises the steps of: cutting a rod of a predetermined length from a rod material formed of powdered metal, such as modified Tl 5 HSS (i.e., adding molybdenum therein); applying 47 to both ends. /4 5° chamfer; honing its outer diameter to a predetermined size; applying oil and extruding one end of the cut portion in an extrusion die fixed in the press - multi-petal structure 'A stress relief is applied to this part in a heat treatment furnace; a trademark is made on this part; the outer diameter is stretched to a predetermined size; -8- (6) (6) 132152 The surface of this part is treated To a predetermined length; to repair a nose; to heat treatment to a predetermined hardness; to honing the nose angle to achieve the desired final extent and length; to honing its outer diameter to a predetermined size and length; The nose is polished to the desired final extent. This method is relatively simple and does not require any debonding step; this method differs from the metal injection molding process in that the metal injection molding process must remove the binder during sintering or prior to sintering. The final part made by this type of metal injection molding is generally only 95-98% dense. In contrast, the final part produced by the above method is theoretically 100% dense and has improved column strength, impact resistance and tool life. Before the above manufacturing steps are carried out, in order to prepare a powder steel bar, the following treatment must be used: The molten metal having an appropriate composition is split into an atom in an inert gas. Seal the resulting powder metal in a large steel 'can' in this steel tank is a steel tube 'long 5 to 6 呎' diameter of 1 〇 to 1 2 inches & this sealed steel tank Placed in a HIP_hot isostatic press, this hot equalizer can apply 1000 times the standard atmospheric pressure at a temperature of 2100F. After the HIP step, the steel can is cut to a solid and 100% density? _1^1. Ingots. This P.M. chain is then treated similarly to conventional cast ingots. Although some embodiments of the present invention have been shown and described, it is to be understood by those skilled in the art that it is well known to those skilled in the art without departing from the spirit and scope of the invention. The present invention can still produce many modifications. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a multi-lobed punch pin; FIG. 2 is an image of a punch pin formed by M42 tool steel, wherein the image is 400 times magnified by a microscope. And taken along a transverse section (that is, along line 2 in Figure 1); Figure 3 is an image similar to Figure 2, but along a longitudinal section (that is, along line 3 in Figure 1) Photographed; Figure 4 provides an image of a punch pin formed by M42 tool steel, which is captured by a scanning electron microscope (SEM) at 35 times magnification, and already After punching the multi-lobed pocket into the workpiece using the punch pin a considerable number of times; Figure 5 provides an image showing a punch pin formed from a modified T15 HSS in powder form, in accordance with an embodiment of the present invention, The image is taken by a microscope at a magnification of 400 times and along a cross-section (that is, along line 2 in Figure 1); Figure 6 is an image similar to Figure 5, but along the line Take a longitudinal section (that is, along line 3 in Figure 1); Figure 7. For an image 'showing a punch pin formed by a modified TI5 HSS in powder form' where the image was taken at 50 times magnification by a scanning electron microscope (SEM)' and the punch has been used After the pin has plunged the multi-lobed pocket into the workpiece for a considerable number of times; and Figure 8 is a flow chart 'showing a method of manufacturing a multi-lobed 10- (8) 13215002, such as a punch pin, wherein Method according to an embodiment of the present invention [Description of main component symbols] 10 Punch shaving 12 head

Claims (1)

1321502 ⑴ 十、申請專利範圍 1.—種具有一本體與一多瓣狀末端外形（1 2)之工具 (10)，可用於將多瓣狀凹穴衝入工件內，該工具（10)的特 徵在於該本體是由粉末金屬製成的。 2·如申請專利範圍第1項之工具0),其中該工具 (10)是由粉末形式的高速鋼製成的。 3 ·如申請專利範圍第2項之工具（10)，其中該高速 鋼包含T15高速鋼。 4. 如申請專利範圍第2項之工具（1〇)，其中該高速 鋼包括鉬。 5. 如申請專利範圍第3項之工具（】〇)，其中該T15 高速鋼包括鉬。 6. 如申請專利範圍第1項之工具（1 0)，其中該工具 (1 〇)的構造能將多瓣狀凹穴衝入緊扣件的頭部內。 7. —種由粉末金屬製成的工具（10)之製造方法，其 中該工具（10)具有一多瓣狀末端外形（12)，可用於將多瓣 狀凹穴衝入工件內，該方法的特徵在於包含以下步驟： 設置一由粉末金屬所形成的棒； 從該棒上切下一預定長度，該預定長度可界定出一部 位； 對該部位的至少一末端施以倒角； 將該部位的一外徑硏磨至一預定尺寸； 在該部位的一端（12)上擠壓出一多瓣狀結構； 將該部位的一外徑硏磨至一預定尺寸；以及 -12 - ⑧ (2) 1321502 « 將該部位成形至一預定長度。 8-如申請專利範圍第7項之製造方法，進_步包含 將該部位在一熱處理爐中施以應力消除。 9.如申請專利範圍第7項之製造方法，進一步包含 將一商標鑄造在該部位上。 10‘如申請專利範圍第7項之製造方法，進—步包含 處理該部位的表面到一預定的最終長度。 • 11.如申請專利範圍第7項之製造方法，進—步包含 在該部位上修出一鼻角。 12.如申請專利範圍第7項之製造方法，進—步包含 將該部位施以熱處理至一預定硬度。 13·如申請專利範圍第11項之製造方法，進一步包 含將該鼻角抛光至想要的最終加工。 1 4·如申請專利範圍第7項之製造方法，其中將棒切 出預定長度的步驟中包含將由高速鋼形成的一棒切出預定 φ 長度。 15. 如申請專利範圍第7項之製造方法，其中將棒切 出預定長度的步驟中包含將由T】5高速鋼形成的—棒切出 預定長度。 16. 如申請專利範圍第7項之製造方法，其中將棒切 出預定長度的步驟中包含將含有鉬的高速鋼所形成之一棒 切出預定長度。 17. 如申請專利範圍第7項之製造方法，其中將棒切 出預定長度的步驟中包含將含有鉬的TI5速鋼所形成之一 -13- 1321502 棒切出 1 I 位的至 以47。1321502 (1) X. Patent application scope 1. A tool (10) having a body and a multi-lobed end profile (12), which can be used to punch a multi-lobed pocket into a workpiece, the tool (10) It is characterized in that the body is made of powdered metal. 2. The tool of the first application of the patent scope 0), wherein the tool (10) is made of high speed steel in powder form. 3 • The tool (10) of claim 2, wherein the high speed steel comprises T15 high speed steel. 4. For example, the tool (1〇) of claim 2, wherein the high speed steel includes molybdenum. 5. For the tool of claim 3 (]〇), the T15 high speed steel includes molybdenum. 6. The tool (10) of claim 1 wherein the tool (1 〇) is configured to punch a multi-lobed pocket into the head of the fastener. 7. A method of manufacturing a tool (10) made of powdered metal, wherein the tool (10) has a multi-lobed end profile (12) that can be used to punch a multi-lobed pocket into a workpiece. Characterized by the steps of: providing a rod formed of powdered metal; cutting a predetermined length from the rod, the predetermined length defining a portion; chamfering at least one end of the portion; An outer diameter of the portion is honed to a predetermined size; a multi-petal structure is extruded on one end (12) of the portion; an outer diameter of the portion is honed to a predetermined size; and -12 - 8 ( 2) 1321502 « Form the part to a predetermined length. 8- The manufacturing method of claim 7, wherein the step of applying the stress relief in a heat treatment furnace. 9. The method of manufacture of claim 7, further comprising casting a trademark on the portion. 10 'As in the manufacturing method of claim 7, the further step of treating the surface of the portion to a predetermined final length. • 11. As in the manufacturing method of claim 7, the further step involves repairing a nose at the location. 12. The method of manufacturing of claim 7, wherein the step of applying heat treatment to a predetermined hardness. 13. The method of manufacture of claim 11, further comprising polishing the nose to the desired final processing. The manufacturing method of claim 7, wherein the step of cutting the rod into the predetermined length comprises cutting a rod formed of high speed steel by a predetermined length φ. 15. The manufacturing method according to claim 7, wherein the step of cutting the rod into the predetermined length comprises cutting the rod formed of T]5 high speed steel into a predetermined length. 16. The manufacturing method according to claim 7, wherein the step of cutting the rod into the predetermined length comprises cutting one of the rods formed of the high-speed steel containing molybdenum by a predetermined length. 17. The manufacturing method according to claim 7, wherein the step of cutting the rod into a predetermined length comprises cutting a rod of -13-1321502 formed of TI-speed steel containing molybdenum to a position of 1 to 47. 位的 油至 出多 預定長度。 .如申請專利範圍第7項之製造方法，其中將該部 少一端施以倒角之步驟中，包含對該部位的兩端施 /45°的倒角。 •如申請專利範圍第7項之製造方法，其中將該部 端上擠壓出一多瓣狀結構之步驟中，進一步包含塗 部位上，且在固定至一衝壓機上的一擠壓模內擠壓 狀結構。The position of the oil is up to a predetermined length. The manufacturing method of claim 7, wherein the step of chamfering the one end portion comprises applying a chamfer of 45° to both ends of the portion. The manufacturing method of claim 7, wherein the step of extruding the multi-petal structure on the end portion further comprises a coating portion and is fixed in an extrusion die fixed to a punching machine Squeeze structure. -14 --14 -
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JP2007532320A (en) 2007-11-15
CA2558010A1 (en) 2005-11-03
US20050227772A1 (en) 2005-10-13
WO2005102559A2 (en) 2005-11-03
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AR048680A1 (en) 2006-05-17
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EP1735117A4 (en) 2010-04-07
EP1735117A2 (en) 2006-12-27

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