201139834 六、發明說明： 【明戶斤屬椅々貝】 發明領域 本發明係有關於一種鑽頭或打擊工具等、安震有超硬 合金或陶瓷等之尖端（以下、稱為「硬質尖端」）之工具（以 下、稱為「超硬工具」）中之硬質尖端之固定方法。 L· ^ 發明背景 用於鑽頭或石工之表面加工用工具等多半於銅製之底 材植設硬質（一般為超硬尖端)者。該硬質尖端之安裝法最一 般的是於底材穿設供硬質尖端嵌合之尖端孔，並於該尖端 孔嵌合硬質尖端加以_之方法或熱嵌法。 然而，以上述焊銅法或熱嵌固定硬質尖端之工具在加 工對象物為高溫時，卫具本身會加熱成高溫，因此具有硬 質尖端因熱應力而損傷並且之問題。例如，炼爐之流 出孔在已轉之生鐵之流出結料會再度，進行到下 溶解作業’但以鑽頭進行該流出孔之開口、或閉塞時之 開口部的平坦化(為了使閉塞用之泥搶之前端部與流出孔 ，口周緣#緊㈣著，必須進行平坦化)時，由於爐壁溫度 π» □此使用已將硬質尖端烊鋼之鑽頭或已進行熱嵌之鑽 頭時’具有超硬尖端會立刻脫落之問題點。 挖掘工具中’尖端難㈣落之固定方法已知的有如專 利文獻1所揭示之方法。該方法係於尖端之基端部之側 成凹凸形狀，麵彳擔接叫蓋該㈣之方法。 面形 201139834 【專利文獻1】日本專利公開公報特開第2003-214080 號公報 【明内】 發明概要 發明欲解決之課題 上述專利文獻1所記載之方法係直接進行熔接以覆蓋 尖端之外周面者’因此認為尖端應該可強固地保持，但若 是材質較脆之超硬尖端時，則恐有因熱衝擊等影響而產生 裂縫之虞’而有實用上的問題❹該方法以外也想幾個方法， 但目前尚未確立可耐於高溫下使用之超硬尖端等實用的固 疋方法。因此本發明之課題在於提供一種即使在高溫下使 用時’也可強固地保持超硬尖端等之硬質尖端，難以產生 脫落等固定方法。 解決課題之手段 本發明為解決上述課題，提供如下之固定方法。即， 第1項所記載之超硬工具之特徵在於：於設置於鋼製底材且 具有母螺紋之尖端孔鼓入硬質尖端’並由其上螺固壓環以 將前述硬質尖端推壓固定，且前述壓環係於外周部具有可 與前述母螺紋螺合之公螺紋者。又，第2項所記栽之硬質尖 端之固定方法之特徵在於：於鋼製底材之適當處設置直徑 比硬質尖端之外徑大之尖端孔’且於該尖端孔之内周部形 成母螺紋，將具有前端部之徑較小且基部側之徑逐漸變大 之傾斜外周面的硬質尖端嵌入前述尖端孔，並且將外周部 形成有可螺合於前述尖端孔之母螺紋的公螺紋、内周部形 201139834 成有可緊密貼著於前述硬質尖端之外周之通孔的壓環，在 前述硬質尖端插通到該通孔之狀態下，螺合於前述尖端孔 之母螺紋，以壓住硬質尖端，藉此以將硬質尖端固定於底 材之螺孔内部。該固定方法中，係如第3項所記載，宜將前 述壓環之内面形成為下側較寬上側較窄之傾斜面，以緊密 貼著於硬質尖端之外周面前述壓環之内面。又，第4項所記 載之硬質尖端之固定方法之特徵在於：於鋼製底材之適當 處設置直徑比硬質尖端之外徑大之尖端孔，並於該尖端孔 之内周部形成母螺紋，且將底部一體形成有朝外周方向伸 出之凸緣之硬質尖端嵌入前述尖端孔；並且將外周部形成 有可螺合於前述尖端孔之母螺紋之公螺紋的壓環在前述硬 質尖端插通其通孔之狀態下，螺合於前述尖端孔之母螺 紋，以壓住硬質尖端之凸緣，藉此將硬質尖端固定於底材 之螺孔内部。 發明之效果 本發明之超硬工具係以附有螺絲之壓環將硬質尖端以 機械方式按壓固定於尖端孔之内部，因此熔爐之流出孔開 口等可在高溫狀態下使用。又，根據本發明之硬質尖端之 固定法，在硬質尖端嵌合於設於底材之尖端孔之狀態下， 由上藉由壓環予以壓住，而且該壓環螺合且固著於尖端孔 之内周部之母螺紋，因此硬質尖端可強固予以保持。該固 定方法中，為了固定而不將硬質尖端加熱到高溫，因此硬 質尖端不產生裂縫等。又，由於與不使用銅材而使用熱膨 脹之熱嵌不同，因此即使在使用時曝露於高溫也不用擔心。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The method of fixing the hard tip in the tool (hereinafter referred to as "superhard tool"). L· ^ Background of the Invention Most of the tools for surface processing such as drills or masonry are made of a copper substrate (generally a super-hard tip). The mounting method of the hard tip is most generally performed by inserting a tip end hole for fitting a hard tip into the substrate, and fitting a hard tip to the tip hole. However, when the workpiece is heated to a high temperature by the above-described copper-welding method or by heat-insertion, the fixture itself is heated to a high temperature, so that the hard tip is damaged by thermal stress. For example, the outflow hole of the furnace is re-exited in the flow of the transferred pig iron, and the lowering operation is performed. However, the opening of the outflow hole or the opening of the opening is blocked by the drill bit (for the purpose of blocking) Before the mud grabs the end and the outflow hole, the edge of the mouth is tight (four), and must be flattened), because the furnace wall temperature π» □ this has used the hard tip steel or the hot-filled drill bit The problem that the super-hard tip will fall off immediately. A method of fixing the tip of the digging tool in the excavating tool is known as the method disclosed in Patent Document 1. The method is formed in a concave-convex shape on the side of the base end portion of the tip end, and the face is supported by the method of covering the (4). [Patent Document 1] Japanese Laid-Open Patent Publication No. 2003-214080 [Brief Description of the Invention] SUMMARY OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION The method described in Patent Document 1 is directly welded to cover the outer periphery of the tip. 'Therefore, it is believed that the tip should be strong enough to hold, but if it is a super-hard tip with a brittle material, there is a fear of cracks due to thermal shock and the like. There are practical problems. There are several methods in addition to this method. However, there is no practical solid-state method that can withstand the use of ultra-hard tips at high temperatures. Therefore, an object of the present invention is to provide a rigid method in which a hard tip such as a super-hard tip can be strongly held even when used at a high temperature, and it is difficult to cause a peeling or the like. Means for Solving the Problems In order to solve the above problems, the present invention provides the following fixing method. In other words, the superhard tool according to the first aspect is characterized in that the tip end hole provided in the steel substrate and having the female thread is slid into the hard tip 'and the screw is fixed on the ring to press the hard tip. And the pressure ring is provided on the outer peripheral portion with a male thread that can be screwed with the female thread. Further, the method of fixing the hard tip of the second item is characterized in that a tip end hole having a diameter larger than an outer diameter of the hard tip is provided at a suitable portion of the steel substrate, and a mother is formed on the inner circumference of the tip hole. a threaded end in which a hard tip having a slanted outer peripheral surface having a small diameter at the front end portion and a diameter gradually increasing on the base side is fitted into the tip end hole, and a male thread which can be screwed to the female thread of the tip end hole is formed in the outer peripheral portion, The inner peripheral portion shape 201139834 has a pressure ring which can be closely adhered to the through hole of the outer periphery of the hard tip, and is screwed to the female thread of the tip end hole in a state where the hard tip is inserted into the through hole, and is pressed The hard tip is held to secure the hard tip to the inside of the screw hole of the substrate. In the fixing method, as described in the third aspect, it is preferable that the inner surface of the pressure ring is formed as an inclined surface having a narrow upper side on the lower side so as to be in close contact with the inner surface of the pressure ring on the outer circumferential surface of the hard tip. Further, the method of fixing a hard tip according to the fourth aspect is characterized in that a tip end hole having a diameter larger than an outer diameter of the hard tip is provided at a suitable portion of the steel substrate, and a female thread is formed on an inner circumference of the tip end hole. And inserting a hard tip of the bottom integrally formed with a flange extending toward the outer circumferential direction into the tip end hole; and forming a pressure ring of the male screw thread of the female thread of the tip end hole into the outer peripheral portion at the aforementioned hard tip insertion In the state of the through hole, the female thread of the tip end hole is screwed to press the flange of the hard tip, thereby fixing the hard tip to the inside of the screw hole of the substrate. EFFECTS OF THE INVENTION The superhard tool of the present invention mechanically presses and fixes the hard tip to the inside of the tip end by a press ring with a screw, so that the outlet opening of the furnace or the like can be used at a high temperature. Further, according to the fixing method of the hard tip of the present invention, the hard tip is fitted to the tip end hole provided in the substrate, and is pressed by the upper ring by the pressure ring, and the pressure ring is screwed and fixed to the tip end. The female thread on the inner circumference of the hole, so the hard tip can be firmly held. In this fixing method, the hard tip is not heated to a high temperature for fixation, so that the hard tip does not generate cracks or the like. Moreover, since it is different from the thermal expansion using thermal expansion without using copper, there is no need to worry even if it is exposed to high temperatures during use.
S 5 201139834 尖端脫落。 圖式簡單說明 第1圖係表示本發明之固定方法的截面圖。 第2圖係表示該步驟之截面圖。 第3圖係底材之平面圖（a)與側面圖（b)。 第4圖係表示將底材之2種之尖端孔分成左右之截面 圖。 第5圖係底材之縱截面圖。 第6圖係流出孔開口用鑽頭之平面圖（a)與側面圖（b)。 第7圖係表示與上述不同之實施形態之截面圖。 第8圖係該固著狀態之截面圖。 第9圖係表示與實施形態不同之參考例之圖。 第10圖係該固著狀態之截面圖。 L實施方式3 較佳實施例之詳細說明 以下，具體的說明本發明之實施形態。第1圖係例示本 發明之超硬工具，硬質尖端3(此時為超硬尖端）之基部嵌合 於設置於銅製之底材1之頭部的尖端孔2。尖端3之底面與尖 端孔2之底面7緊密貼著。 硬質尖端3係如第2圖所示，由頭部3a、主體部3b、及 基部3c所構成，且形成為頭部3a之前端部的徑較小，主體 部側之徑較大概略砲彈型。主體部3b係徑均一之圓柱狀， 201139834 基部3c係形成主體部側之徑較小、基部側之經漸漸變大之 截面圓錐狀之傾斜面。 底材1之尖端孔2之内徑比硬f尖端3之基部之最大部 之外徑大’在尖端孔内壁面與尖端外周面之間保有適度的 間隙4。尖端孔2之内周部形成有母螺紋2a。 壓環5於中央部形成有硬質尖端3之上下中間部可傲合 之嵌合孔6。該嵌合孔6之内周面形成上八狀之 傾斜面，而可與尖端3之基部3e之傾斜外周面緊密貼著。 又’壓環5之外周部形成有供尖端孔2之母螺紋城合之公 螺紋5a。⑽，祕5侧合於綺之尖魏2之母 因此於其上部宜先設置扳手等工具之平扳鉗、八、、、、者， 等之卡合手段。 S用銷孔 於該底材1固定硬質尖端3時，首先，將硬質尖山 尖端孔2之中央部，並由其上被覆壓環5，使硬質小嵌入 於嵌合孔6。 次端3嵌合 在此狀態下，壓環5螺合於尖端孔2之母螺紋， 密貼著於硬質尖端3。圖示例中，壓環5之嵌合孔6之内周豕 係形成為與硬質尖端3之基部之傾斜面緊密貼 β面 ’、、考之傾斜 面，因此内周面與硬質尖端之外周面緊密貼著之璺環^ 到達尖端孔2之底面7,而於該底面與壓板5之下面 <間形成 空間部。因此’尖端3被壓板5推壓而固定。特別是第6 第7圖之圖示例中’尖端3之外周面形成圓錐狀之傾斜面 壓板5之内周面形成適合尖端之外周面之喇^八狀傾斜面 此壓板5之嵌合孔内周面與尖端外周面緊密貼著， J域固地 7 201139834 固定尖端。 第3圖至第5圖係顯示底材1 ’該底材1係由鋼材製作， 包含4個切削翼la之上面（前端面）設有複數尖端孔2與嵌平 孔8，於側面亦設有嵌平孔9。圖中之20為用以安裝於錯頭 之螺孔。第6圖係表示顯示出於硬質尖端3固著於上述底材1 之完成狀態之鑽頭的外觀。 圖示例中，固定有硬質尖端3之壓環5之上面由底材丨之 表面梢微突出，但亦可設置成與底材1之表面大略在同— 面。使用於流出孔之開口之鑽頭使用1次後會因為開口時之 高熱而損傷硬質尖蠕，因此，大部分的情況是使用即丟。 因此，硬質尖端之固定方法只要是可強固地固定成堪使用 之程度者，外觀等不會成為問題。 其次，第7、8圖係表示與上述有些許不同之實施形態 者，在該實施形態中，凸緣31 一體形成於硬質尖端3之基 部°該凸緣31之外徑與尖端孔2之内#大略相同，高度為數 公厘，其上螺固有壓環5 ’壓環5之下面緊密貼著於前述凸 緣1之上面。如此’與硬質尖端3成—體之凸緣被壓環5 壓住，因此硬質尖端3之固定更確實。 其次，第9' 10圖係顯示與上述若干不同之參考例，該 =例中，硬質㈣13之基部相部直接設有公螺紋Μ。 將該硬質尖端13直接螺合於 时 可蝶紋之經切割之尖端孔2。 即，將硬質尖端13直接螺固 « ^ 、低材1。一般係將零件螺固於 基材，但由於硬質尖端—般央 m ^ 果。兒較脆，不進行使用螺絲之 固疋。然而，使用於流出孔之門 之開口之工具使用1次多半就要 201139834 丟棄，因此可採用此種螺絲式的固定方法。如此，硬質尖 端本身亦可形成公螺紋’由於一般較難在此種硬質尖端形 成螺絲部，因此如上述實施形態所示，以壓環5按壓較為實 用。 如以上所說明，根據本發明之硬質尖端固定方法，可 以機械式將超硬尖端等之硬質尖端強固地固定於鋼製之底 材’即使係對高溫之對象物使用時，亦成為尖端難以脫落 者。又’在固定時’由於不會對尖端本身造成熱衝擊，因 此即使係較脆材質之超硬尖端亦可確實地固定。 産業上之可利用性 本發明之超硬工具中之硬質尖端之固定方法可不需強 硬而可強固地將硬質尖端固定於鋼製之底材，可使用作為 用於接受高熱之用途之超硬工具之尖端固定法。 【圖式簡單說明：| 第1圖係表示本發明之固定方法的截面圖。 第2圖係表示該步驟之裁面圖。 第3圖係底材之平面圖（a)與側面圖（b)。 第4圖係表示將底材之2種之尖端孔分成左右之截面 圖。 第5圖係底材之縱截面圖。 第6圖係流出孔開口用鑽碩之平面圖（a)與側面圖（b)。 第7圖係表示與上述不同之實施形態之截面圖。 第8圖係該固著狀態之戴面圖。 9 t 201139834 第9圖係表示與實施形態不同之參考例之圖。 第10圖係該固著狀態之截面圖。 【主要元件符號說明】 1…底材 la...切削翼 2.. .尖端孔 2a...母螺紋 3.. .尖端 31.. .凸緣 3a...頭部 3b...主體部 3c...基部 4.. .間隙 5…壓環 5a...公螺紋 6.. .嵌合扎 7.. .底面 8, 9...嵌平孔 13.. .硬質尖端 10S 5 201139834 Tip peeling off. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a fixing method of the present invention. Figure 2 is a cross-sectional view showing this step. Figure 3 is a plan view (a) and a side view (b) of the substrate. Fig. 4 is a cross-sectional view showing the tip end holes of the two types of substrates divided into left and right. Figure 5 is a longitudinal sectional view of the substrate. Fig. 6 is a plan view (a) and a side view (b) of the drill for opening the orifice. Fig. 7 is a cross-sectional view showing a different embodiment from the above. Figure 8 is a cross-sectional view of the fixed state. Fig. 9 is a view showing a reference example different from the embodiment. Figure 10 is a cross-sectional view of the fixed state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be specifically described. Fig. 1 is a view showing a superhard tool of the present invention, in which a base of a hard tip 3 (in this case, a superhard tip) is fitted to a tip end hole 2 provided in a head portion of a substrate 1 made of copper. The bottom surface of the tip end 3 is in close contact with the bottom surface 7 of the tip end hole 2. As shown in Fig. 2, the hard tip 3 is composed of a head portion 3a, a main body portion 3b, and a base portion 3c, and has a small diameter at the front end portion of the head portion 3a and a large diameter on the main body portion side. . The main body portion 3b has a cylindrical shape with a uniform diameter, and the base portion 3c of the 201139834 is formed by a tapered surface having a smaller diameter on the main body portion side and a gradually larger cross section on the base portion side. The inner diameter of the tip end hole 2 of the substrate 1 is larger than the outer diameter of the largest portion of the base portion of the hard f-tip 3, and an appropriate gap 4 is maintained between the inner wall surface of the tip end hole and the outer peripheral surface of the tip end. The inner peripheral portion of the tip end hole 2 is formed with a female thread 2a. The pressure ring 5 is formed at the center portion with a fitting hole 6 in which the lower middle portion of the hard tip 3 can be proud of. The inner peripheral surface of the fitting hole 6 is formed into an upper slanted surface, and is in close contact with the inclined outer peripheral surface of the base portion 3e of the tip end 3. Further, a male screw 5a for the female thread of the tip end hole 2 is formed on the outer peripheral portion of the pressure ring 5. (10), the secret 5 side is combined with the mother of the tip of the 魏 魏 Wei 2 Therefore, in the upper part of it should be set first wrenches such as wrenches, eight,,,,, etc. When the hard tip 3 is fixed to the substrate 1 by first, the center portion of the hard tip end hole 2 is first covered with the pressure ring 5, and the hard portion is fitted into the fitting hole 6. The secondary end 3 is fitted. In this state, the pressure ring 5 is screwed to the female thread of the tip end hole 2, and is in close contact with the hard tip 3. In the example of the figure, the inner circumference of the fitting hole 6 of the pressure ring 5 is formed so as to be closely attached to the inclined surface of the base portion of the hard tip 3, and the inclined surface is measured, so that the inner circumferential surface and the outer periphery of the hard tip are The cymbal ring 2 which is in close contact with the surface reaches the bottom surface 7 of the tip end hole 2, and a space portion is formed between the bottom surface and the lower surface of the pressure plate 5. Therefore, the tip end 3 is pressed and fixed by the pressing plate 5. In particular, in the example of the sixth drawing, the inner peripheral surface of the inclined surface pressing plate 5 in which the outer peripheral surface of the tip end 3 is formed into a conical shape forms a fitting hole of the pressing plate 5 which is suitable for the outer peripheral surface of the tip end. The inner peripheral surface is closely attached to the outer peripheral surface of the tip end, and the J-domain fixed ground 7 201139834 has a fixed tip. Fig. 3 to Fig. 5 show the substrate 1'. The substrate 1 is made of steel, and the upper surface (front end surface) of the four cutting blades 1a is provided with a plurality of tip holes 2 and flat holes 8, which are also provided on the side. There is a flat hole 9. 20 in the figure is a screw hole for mounting on the wrong head. Fig. 6 is a view showing the appearance of a drill bit showing the state in which the hard tip 3 is fixed to the above-mentioned substrate 1. In the illustrated example, the upper surface of the pressure ring 5 to which the hard tip 3 is fixed is slightly protruded from the surface tip of the substrate ,, but may be disposed to be substantially the same as the surface of the substrate 1. When the drill used in the opening of the outflow hole is used once, the hard tip creep is damaged by the high heat at the time of opening, and therefore, most of the cases are used. Therefore, the fixing method of the hard tip does not become a problem as long as it can be firmly fixed to the extent that it can be used. Next, the seventh and eighth drawings show a slightly different embodiment from the above. In this embodiment, the flange 31 is integrally formed at the base of the hard tip 3, and the outer diameter of the flange 31 is within the tip end hole 2. #大略同, The height is a few mm, and the underside of the upper natural pressure ring 5' pressure ring 5 is closely attached to the upper surface of the flange 1. Thus, the flange which is formed with the hard tip 3 is pressed by the pressure ring 5, so that the fixing of the hard tip 3 is more sure. Next, the 9'10 figure shows a reference example different from the above, in which the base portion of the hard (four) 13 is directly provided with a male thread. The hard tip 13 is screwed directly into the cut tip hole 2 of the butterfly. That is, the hard tip 13 is directly screwed «^, low material 1. Typically, the part is screwed to the substrate, but due to the hard tip. It is brittle and does not use screws. However, the tool used for the opening of the door of the outflow hole is discarded more than once in 201139834, so this screw type fixing method can be used. Thus, the hard tip itself can also form a male thread. Since it is generally difficult to form the screw portion at the hard tip end, it is practical to press the pressure ring 5 as shown in the above embodiment. As described above, according to the hard tip fixing method of the present invention, the hard tip such as the super hard tip can be mechanically fixed to the steel substrate. When the object is used for a high temperature object, the tip is hard to fall off. By. Further, since the fixing is not caused by thermal shock to the tip itself, the superhard tip of the brittle material can be surely fixed. INDUSTRIAL APPLICABILITY The method of fixing a hard tip in the superhard tool of the present invention can firmly fix a hard tip to a steel substrate without being tough, and can be used as a superhard tool for receiving high heat. The tip fixing method. BRIEF DESCRIPTION OF THE DRAWINGS: Fig. 1 is a cross-sectional view showing a fixing method of the present invention. Figure 2 is a plan view showing the steps of this step. Figure 3 is a plan view (a) and a side view (b) of the substrate. Fig. 4 is a cross-sectional view showing the tip end holes of the two types of substrates divided into left and right. Figure 5 is a longitudinal sectional view of the substrate. Figure 6 is a plan view (a) and a side view (b) of the drill hole opening. Fig. 7 is a cross-sectional view showing a different embodiment from the above. Figure 8 is a front view of the fixation state. 9 t 201139834 Fig. 9 is a view showing a reference example different from the embodiment. Figure 10 is a cross-sectional view of the fixed state. [Main component symbol description] 1...substrate la...cutting wing 2..tip tip hole 2a...female thread 3...tip 31.. flange 3a...head 3b...body Part 3c... base 4... clearance 5... pressure ring 5a... male thread 6... fitting 7: bottom surface 8, 9... flat hole 13.. hard tip 10