JPS63180427A - Manufacture of superhard tool - Google Patents
Manufacture of superhard toolInfo
- Publication number
- JPS63180427A JPS63180427A JP1302487A JP1302487A JPS63180427A JP S63180427 A JPS63180427 A JP S63180427A JP 1302487 A JP1302487 A JP 1302487A JP 1302487 A JP1302487 A JP 1302487A JP S63180427 A JPS63180427 A JP S63180427A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- baked
- cracks
- unit
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims abstract description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 14
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 13
- 238000009704 powder extrusion Methods 0.000 claims abstract description 10
- 239000010409 thin film Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 abstract description 7
- 239000012778 molding material Substances 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- -1 gold metal oxide Chemical class 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はドリル、エンドミル、リーマ等の超硬工具の製
法に係わり、更に詳しくは、粉末押出成型法を利用した
超硬工具の製法の改良に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for manufacturing carbide tools such as drills, end mills, and reamers, and more specifically, an improvement in the method for manufacturing carbide tools using powder extrusion. Regarding.
周知の通りドリル等工具は、その外周面にスパイラル状
の方形が形成されている。以前に於けるこの方形の製作
技術は、先ず円筒状、棒状の超硬質材を成型し且つ焼結
し、この後ダイヤモンド工具を用いて溝を加工し、もっ
て刃付加工してい′る。このようにスパイラル状の方形
形成に関してはダイヤモンド工具を用いなければならな
いので、刃付加工が高精度加工、複雑加工となり、その
製造コスト低減化に限界が生じていた。As is well known, a tool such as a drill has a spiral rectangle formed on its outer peripheral surface. The previous manufacturing technology for this rectangular shape was to first mold and sinter a cylindrical or rod-shaped ultra-hard material, and then use a diamond tool to machine the grooves and create a cutting edge. As described above, since a diamond tool must be used to form a spiral rectangle, the blade machining requires high precision machining and complicated machining, which limits the ability to reduce manufacturing costs.
そこで本出願人は、先に粉末押出成型法により、いった
ん一端から他端迄の周面にスパイラル状の溝形又は方形
を形成し、次いでそれを所要の長さに切断し、而る後に
それを焼結してドリル。Therefore, the applicant first formed a spiral groove or rectangle on the circumferential surface from one end to the other using a powder extrusion method, then cut it to the required length, and then Sinter and drill.
エンドミル、リーマ等とする製法を提案した。これによ
れば外周のスパイラル状の刃の形成が極めて容易且つ能
率的に製作できることが判明した。We proposed a manufacturing method for making end mills, reamers, etc. According to this, it has been found that the spiral-shaped blade on the outer periphery can be formed extremely easily and efficiently.
上述したように粉末押出成型法及び焼結法を用いた上述
製法は画期的な利点を有するものであ゛るけれども、本
出願人がこの試作、研究に従事している間に次の点が判
明した。As mentioned above, the above manufacturing method using the powder extrusion molding method and sintering method has revolutionary advantages, but while the applicant was engaged in this trial production and research, the following points were discovered. There was found.
即ち、焼結し終った段階で、焼結単位素材の表面に仮に
、微細であっても傷が残っていると又は傷が生じている
と、以後の仕上工程又は使用経過中にクラック、割れを
招き易く、折損率が大きくなるということである。In other words, if there are any scratches, even minute ones, on the surface of the sintered unit material after sintering, cracks or cracks may occur during the subsequent finishing process or use. This means that the breakage rate increases.
従って本発明の目的とする所は、容易且つ能率的なるド
リル等の上述製法をそのまま活かすも、更に焼結単位素
材の表面に、以後に於いてクラックや割れを生じる原因
となる微細な傷が全くないようにすることを目的として
いる。それにより折損率が少ない、より品質的に安定し
たドリル、リーマ、エンドミル等を製することのできる
製法を提供するにある。Therefore, the object of the present invention is to utilize the above-mentioned manufacturing method for easy and efficient drills as is, but also to avoid minute scratches on the surface of the sintered unit material that may cause cracks and fractures in the future. The aim is to ensure that there is no such thing at all. It is an object of the present invention to provide a manufacturing method by which drills, reamers, end mills, etc. can be manufactured with a lower breakage rate and more stable quality.
上記目的を達成る為に本発明は次に技術的手段を有する
。即ち本発明は超硬質材料より成る超硬工具の製法に於
いて；超硬質材料粉末及び必要な助剤を原料として粉末
押出成型法によりいったん一端から他端迄の周面にスパ
イラル状の溝形を形成した成型素材を製し、次いでそれ
を所要の長さに切断して単位長さ成型素材と成し、これ
を焼結して焼結単位素材を製し、この後この焼結単位素
材の表面にニッケル薄膜を施したことを特徴とする超硬
工具の製法である。In order to achieve the above object, the present invention has the following technical means. That is, the present invention relates to a method for manufacturing a cemented carbide tool made of a super hard material; once a spiral groove is formed on the circumferential surface from one end to the other end using a powder extrusion method using super hard material powder and necessary auxiliary agents as raw materials. A molded material having a shape of This is a method for manufacturing carbide tools characterized by applying a thin nickel film to the surface of the tool.
上記に於けるニッケル薄膜を形成する手段は、１つには
電気メツキ法を用いることができ、他には無電解メッキ
（化学メツ牛）を用いることもでき、その他蒸着法等種
々の手段を用いることができる。As for the means for forming the nickel thin film in the above, one method is electroplating, another is electroless plating (chemical plating), and various other methods such as vapor deposition method are also available. Can be used.
上記のように焼結して得た焼結単位素材の表面にニッケ
ル薄膜を形成するので、仮に焼結迄の段階に於いて、表
面に微細な傷が生じていても、該傷部分がニッケル薄膜
によって被覆され、且つ埋められる。Since a thin nickel film is formed on the surface of the sintered unit material obtained by sintering as described above, even if there are minute scratches on the surface during the sintering process, the scratches will be covered with nickel. Covered and filled with a thin film.
この為に、以後に於ける割れ、クラックの発生が格段と
抑えられ、折損率も格段と減少し１品質的に安定する。For this reason, the occurrence of cracks and cracks in the subsequent process is significantly suppressed, the breakage rate is also significantly reduced, and the quality is stabilized.
次に添付図面に従い本発明の好適な実施例を詳述する。 Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
この例ではドリルの製法を例にとって説明する。In this example, a method for manufacturing a drill will be explained.
先ず粉末押出成型機のシリンダ端部の排出端に、そこか
ら押出される成型材の外周にスパイラル状の刃が形成さ
れるが如き金型をセットする。First, a mold is set at the discharge end of the cylinder end of a powder extrusion molding machine, such that a spiral blade is formed on the outer periphery of the molded material to be extruded from the mold.
この後、粉末押出成型機のホッパ内に超硬質合金粉末や
ガーメット粉末、あるいはセラミックス粉末等の超硬質
材料粉末とワックス等の助剤を混合した成型材料を投入
し、これを上記金型から押出す、押出される時に、これ
らの粉末材料が金型の所でスパイラル状にねじられて押
出され、第１図に示すように外周に方形１が形成された
成型素材２が製せられる。ここで上述した超硬質材料粉
末を上げると、常法通り、超硬合金粉末（ＷＣ−ＣＯ系
、ＷＣ−Ｎｉ系、ＷＣ−ＴａＣ−Ｔｉ Ｃ−Ｃ０系、Ｗ
Ｃ−ＴａＣ−”ｒｔｃ−Ｎｉ系等）、いわゆるサーメッ
ト粉末（セラミックスとして■。After this, a molding material made by mixing ultra-hard material powder such as ultra-hard alloy powder, garmet powder, or ceramic powder with an auxiliary agent such as wax is put into the hopper of the powder extrusion molding machine, and this is extruded from the mold. When being extruded or extruded, these powder materials are twisted into a spiral shape in a mold and extruded, producing a molded material 2 having a rectangular shape 1 formed on its outer periphery as shown in FIG. Here, the above-mentioned ultra-hard material powders are as usual.
C-TaC-"rtc-Ni series, etc.), so-called cermet powder (as ceramics).
Ｖ、ＶＩ金金属酸化物、炭化物、けい化物、はう化物、
窒化物などの粉末を用い、これに金属としてコバルト、
ニッケル鉄なでの粉末を入れて混合し、真空中その他適
当な保護ガス中で焼結した粒子）、あるいは５ＬＣ−Ｎ
ｉ、５ｉＮ−Ｎ等のセラミック系超硬質材料粉末等であ
る。V, VI gold metal oxide, carbide, silicide, halide,
Powder such as nitride is used, and cobalt and metal are added to it.
(particles mixed with nickel iron powder and sintered in vacuum or other suitable protective gas) or 5LC-N
Ceramic ultra-hard material powder such as i, 5iN-N, etc.
これを次に第２図に示すように一木当りの長さＬ各に切
断して単位長さ成型素材３を得る。この後第３図に示す
ように、粉末材料の焼結温度で焼結し、単位長さの焼結
素材４を得る。Next, as shown in FIG. 2, each piece of wood is cut into lengths L to obtain unit length molded materials 3. Thereafter, as shown in FIG. 3, the material is sintered at the sintering temperature of the powder material to obtain a sintered material 4 of unit length.
この単位長さ焼結素材４に関し、本出願人は幾つかの試
作を作製したが、粉末押出成型機に於ける押出過程のメ
カニズム等に原因して、その表面に微細な傷がつく場合
がある。このような場合上述した不具合が生ずるので、
本発明に於いては、焼結後、その表面に２〜７ミクロン
程度の薄いニッケル膜を形成するものである０図に於い
ては第４図に附号５でニッケル薄膜を示す、ニッケル薄
膜の形成法は、通常通り電気メッキによるもの、又は無
電解メッキによるもの、あるいは蒸着等の種々のものを
用いることができる。Regarding this unit length sintered material 4, the present applicant has made several prototypes, but there are cases where minute scratches are formed on the surface due to the mechanism of the extrusion process in the powder extrusion molding machine. be. In such a case, the above-mentioned problems will occur, so
In the present invention, after sintering, a thin nickel film of about 2 to 7 microns is formed on the surface of the nickel film. As for the formation method, various methods such as conventional electroplating, electroless plating, or vapor deposition can be used.
このように薄いニッケル膜を形成した後、上方に従って
熱処理をする。これにより表面の微細な傷が埋められる
。この為、以後の工程に於いて傷を原因とするクラック
や割れの発生が可及的に抑えられると共に、折損率も低
く抑えられる。After forming the thin nickel film in this manner, heat treatment is performed in the upward direction. This will fill in any small scratches on the surface. Therefore, the occurrence of cracks and cracks caused by scratches in subsequent steps is suppressed as much as possible, and the breakage rate is also suppressed to a low level.
以上詳述した如く、この発明によれば粉末押出成型法を
利用して、容易且つ能率的に方形又は溝形を形成するよ
うにするも、更に、表面に微細な傷があっても、焼結後
この表面にニッケル薄膜を形成し、この後熱処理するの
で、表面の傷が埋込処理され、以後に於ける割れや、ク
ラックの発生が少なく、折損率も大幅に減少し、品質的
に安定せるドリル、エンドミル、リーマ等の製法を提供
できる利点をもたらすものである。As described in detail above, according to the present invention, a rectangular or grooved shape can be easily and efficiently formed using powder extrusion molding. After curing, a thin nickel film is formed on the surface and then heat treated, so the scratches on the surface are buried, fewer cracks occur, and the breakage rate is significantly reduced, resulting in a quality improvement. This provides the advantage of providing a method for manufacturing stable drills, end mills, reamers, etc.
添付図面は本発明の実施例を示し、第１図は一次成型段
階の図、第２図は単位長さに切断した一次成型素材を示
す図、第３図は単位長さの焼結素材の図、第４図はニッ
ケル薄膜を形成した図であり、図中１は方形、２は一次
成型素材、３は単位長さ成型素材、４は単位長さ焼結素
材、５はニッケル薄膜を各々示している。The accompanying drawings show embodiments of the present invention, with Fig. 1 showing the primary forming stage, Fig. 2 showing the primary forming material cut into unit lengths, and Fig. 3 showing the sintered material of unit length. Figure 4 shows the formation of a nickel thin film, in which 1 is a rectangular shape, 2 is a primary molding material, 3 is a unit length molding material, 4 is a unit length sintered material, and 5 is a nickel thin film. It shows.
Claims (1)
料粉末及び必要な助剤を原料として粉末押出成型法によ
りいったん一端から他端迄の周面にスパイラル状の溝形
を形成した成型素材を製し、次いでそれを所要の長さに
切断して単位長さ成型素材と成し、これを焼結して焼結
単位素材を製し、この後この焼結単位素材の表面にニッ
ケル薄膜を施したことを特徴とする超硬工具の製法。In the manufacturing method of a carbide tool made of a superhard material, a spiral groove is formed on the circumferential surface from one end to the other end using a powder extrusion method using superhard material powder and necessary auxiliaries as raw materials. A material is manufactured, then cut to the required length to form a unit length molded material, sintered to produce a sintered unit material, and then nickel is applied to the surface of this sintered unit material. A method for manufacturing carbide tools characterized by applying a thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1302487A JPS63180427A (en) | 1987-01-22 | 1987-01-22 | Manufacture of superhard tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1302487A JPS63180427A (en) | 1987-01-22 | 1987-01-22 | Manufacture of superhard tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63180427A true JPS63180427A (en) | 1988-07-25 |
Family
ID=11821570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1302487A Pending JPS63180427A (en) | 1987-01-22 | 1987-01-22 | Manufacture of superhard tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63180427A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5115628A (en) * | 1974-06-20 | 1976-02-07 | Uniroyal Inc | Biseibutsunobojoho oyobi kobiseibutsusoseibutsu |
-
1987
- 1987-01-22 JP JP1302487A patent/JPS63180427A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5115628A (en) * | 1974-06-20 | 1976-02-07 | Uniroyal Inc | Biseibutsunobojoho oyobi kobiseibutsusoseibutsu |
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