JPS61227101A - Extrusion molding machine - Google Patents
Extrusion molding machineInfo
- Publication number
- JPS61227101A JPS61227101A JP6616885A JP6616885A JPS61227101A JP S61227101 A JPS61227101 A JP S61227101A JP 6616885 A JP6616885 A JP 6616885A JP 6616885 A JP6616885 A JP 6616885A JP S61227101 A JPS61227101 A JP S61227101A
- Authority
- JP
- Japan
- Prior art keywords
- spiral
- drill
- mold
- molding
- molded
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/147—Making drill blanks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分！Ｐ１
この発明は、焼結前の１１硬の成型に用いられる押し出
し成型機に係り、特に被成型物内部に螺線状の孔を形成
することができる押し出し成型機に圏する。[Detailed description of the invention] [Industrial use! P1 This invention relates to an extrusion molding machine used for molding 11 hard material before sintering, and particularly to an extrusion molding machine that can form spiral holes inside a molded object.
［従来技術］
第４図は、ボール盤等で用いられるドリルの部分図であ
る。この種のドリル１の内部には、一般に、その刃部に
添って螺線状に油穴２．３が形成されており、穿設時に
これら油穴２．３に油が通され、冷却あるいは摩耗の防
止が図られる。[Prior Art] FIG. 4 is a partial view of a drill used in a drilling machine or the like. Inside this type of drill 1, oil holes 2.3 are generally formed in a spiral shape along the cutting edge, and oil is passed through these oil holes 2.3 during drilling to cool or cool the drill. Wear is prevented.
さて、この様なドリル１を炭素鋼あるいは高速度鋼で製
造する場合には、極めて容易に、上述した螺線状の油穴
２，３を形成することができる。Now, when such a drill 1 is manufactured from carbon steel or high-speed steel, the above-mentioned spiral oil holes 2 and 3 can be formed very easily.
しかし、ドリル１を超硬で製造する場合には、油穴を螺
線状に形成することができない。そこで、超硬で製造さ
れるドリルには通常第５図に示すような油穴が形成され
る。すなわち、油穴４はドリルの中心を通り、一端はド
リルの基端に開口する一方、他端はドリルの先端近傍に
おいて２手に分かれ、各々切り刃の先端に間口している
。However, when the drill 1 is made of carbide, the oil hole cannot be formed in a spiral shape. Therefore, oil holes as shown in FIG. 5 are usually formed in drills made of carbide. That is, the oil hole 4 passes through the center of the drill, and one end opens at the base end of the drill, while the other end splits into two parts near the tip of the drill, each opening at the tip of the cutting blade.
ここで、この超硬ドリルは、以下に示すようにして製造
される。まず、素材と螺材とが合わされたものを押し出
し成型機により、内周面が螺線面とされたモールドを通
して成型し、次いで上述の油穴４を形成した後焼結する
。Here, this carbide drill is manufactured as shown below. First, a combination of the raw material and the screw material is molded using an extrusion molding machine through a mold whose inner peripheral surface has a spiral surface, and then the above-mentioned oil hole 4 is formed and then sintered.
［発明が解決しようとする問題点］
ところで通常ドリルは、先端の切り刃が摩耗した場合、
研磨する必要がある。しかしながら、上述した超硬ドリ
ルでは、２ｆに分かれている油穴を全て研ぎ落とすこと
はできず、したがって研磨できる長さが限られ、寿命が
短いという欠点があった。[Problems to be solved by the invention] By the way, when the cutting blade at the tip of a normal drill wears out,
Needs polishing. However, the above-mentioned carbide drill cannot sharpen all of the oil holes divided into 2F, so the length that can be polished is limited and the service life is short.
この発明は、上記事情に鑑み、超硬ドリルに螺線状の油
穴を形成することができる押し出し成型機を提供するこ
とを目的とする。In view of the above circumstances, an object of the present invention is to provide an extrusion molding machine that can form a spiral oil hole in a carbide drill.
［問題点を解決するための手段Ｊ
上記目的を達成するために、この発明は、内周面が螺線
面とされた成型口の内部に、中子を設けたことを特徴と
する。[Means for Solving the Problems J] In order to achieve the above object, the present invention is characterized in that a core is provided inside a molding opening whose inner peripheral surface is a spiral surface.
［作用１
上述した構成にすることにより、素材が成型され、回転
しつつ成型口内の進行する際に、中子によって素材が除
かれた空間が螺線状に形成される。[Operation 1] With the above-described configuration, when the material is molded and rotated as it advances through the molding mouth, a space from which the material is removed by the core is formed in a spiral shape.
［実施例］
以下、図面を参照してこの発明の一実施例について説明
する。[Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第１図は、この発明の一実施例による押し出し成型機の
構成を示す断面図である。図において５はマテリアルシ
リンダであり、また６は、このマテリアルシリンダ５内
を図中左右方向に移動するピストンである。マテリアル
シリンダ５の先端５ａには、外径をマテリアルシリンダ
５の外径と等しくする−・方、内径をマテリアルシリン
ダ５の内径より若干小とする筒状のダイホルダ保持具７
が取り付けられ、このダイホルダ保持具７の内周には、
筒状のダイホルダ８が右向抜出不能に嵌入され、されに
このダイホルダ８の内周には筒状のモールド９が右方向
抜出不能に嵌入されている。この場合、ダイホルダ８の
後端８ａは、先端に向ってその内径が狭くなるようなテ
ーバを有している。FIG. 1 is a sectional view showing the configuration of an extrusion molding machine according to an embodiment of the present invention. In the figure, 5 is a material cylinder, and 6 is a piston that moves in the horizontal direction in the figure within this material cylinder 5. At the tip 5a of the material cylinder 5, there is a cylindrical die holder holder 7 whose outer diameter is equal to the outer diameter of the material cylinder 5 and whose inner diameter is slightly smaller than the inner diameter of the material cylinder 5.
is attached to the inner periphery of this die holder holder 7,
A cylindrical die holder 8 is fitted in such a way that it cannot be pulled out in the right direction, and a cylindrical mold 9 is fitted in the inner periphery of the die holder 8 so that it cannot be pulled out in the right direction. In this case, the rear end 8a of the die holder 8 has a taper whose inner diameter becomes narrower toward the tip.
また、モールド９の成型口、９ａの形状は、第２図に示
すようにドリルの断面形状をなすと共に、その内周面は
螺線面をなしており、この成型口９ａに粉末状の素材と
螺材とを合わせたもの（以下、単に素材という）を押し
通すことにより、ドリルが成型されるようになっている
。Further, the shape of the molding opening 9a of the mold 9 has the cross-sectional shape of a drill as shown in FIG. 2, and its inner peripheral surface has a spiral surface. A drill is formed by pushing a combination of the material and the screw material (hereinafter simply referred to as the material).
また、１０は中子支持部材である。この中子支持部材１
０は、第３図に示すように外径がマテリアルシリンダ５
の内径と同一・の枠１０ａと、この枠１０ａ内に固定さ
れた十字状の渡し部材１０ｂとから構成され、この結果
、中子支持部材１０は扇状のｌ！１１１ｉ１０ｃ、１０
ｃ・・・を有している。この渡し部材１０ｂの一方の而
の中心部には、２本の中子１１．１２が枠１０ａの図形
中心点０を中心とする円周上に１８０°の間隔を置いて
植設され、この場合の上記円周の直径は、第２図に示す
ドリルの一方の切り刃の肉厚部Ｐ１から他方の切り刃の
肉厚部Ｐ２までの距離、Ｏと等しくなっている。Moreover, 10 is a core support member. This core support member 1
0, the outer diameter is the material cylinder 5 as shown in Figure 3.
The core support member 10 is composed of a frame 10a having the same inner diameter as the inner diameter of the frame 10a, and a cross-shaped transition member 10b fixed within the frame 10a.As a result, the core support member 10 has a fan-shaped l! 111i10c, 10
It has c... Two cores 11.12 are planted at the center of one side of the transition member 10b at an interval of 180° on the circumference centered at the center point 0 of the frame 10a. The diameter of the circumference in this case is equal to O, the distance from the thick part P1 of one cutting blade to the thick part P2 of the other cutting blade of the drill shown in FIG.
また、前記中子１１．１２は、各々針金状の部材であっ
て、その長さは前記第１図に示す、マテリアルシリンダ
５の先端から、モールド９の後端までの距離よりも長く
、また中子１１．１２はモールド９の内周の螺線面がな
す傾きと等しい傾きで曲げられ、前記中心点Ｏを中心と
する螺線の一部をなしている。そして、この様な中子支
持部材１０が、中子１１．１２をモールド９側に向りて
マテリアルシリンダ５の先端５ａ内に回動不能に嵌入さ
れている。この場合、枠１０ａは、ダイホルダ保持具７
の後端に当接し、中子１１．１２の先端部は、モールド
９の成型口９ａ内位置している。Each of the cores 11 and 12 is a wire-like member, and the length thereof is longer than the distance from the tip of the material cylinder 5 to the rear end of the mold 9, as shown in FIG. The cores 11 and 12 are bent at an inclination equal to the inclination of the spiral surface on the inner circumference of the mold 9, and form part of a spiral centered on the center point O. The core support member 10 as described above is unrotatably fitted into the tip 5a of the material cylinder 5 with the cores 11 and 12 facing the mold 9 side. In this case, the frame 10a is the die holder holder 7
Abutting against the rear end of the core 11 , 12 , the tip end of the core 11 , 12 is positioned within the molding opening 9 a of the mold 9 .
また、この場合、中子１１．１２の先端部は、各々成型
口９ａ内において常に前記肉厚部Ｐ１あるいはＰ２に位
置している。Further, in this case, the tips of the cores 11 and 12 are always located in the thick portion P1 or P2 within the molding opening 9a, respectively.
以上の構成において、マテリアルシリンダ５内に挿入さ
れた素材がピストン６によって第１図右方に押圧される
と、素材は中子支持部材１０の扇状の隙間１０ｃ、１０
ｃ・・・を通ってダイボルダ８およびモールド９の後端
に移動し、モールド９の成型口９ａ内に押し込まれる。In the above configuration, when the material inserted into the material cylinder 5 is pressed to the right in FIG.
c..., moves to the rear end of the die boulder 8 and the mold 9, and is pushed into the molding opening 9a of the mold 9.
さらに。ピストン６が移動を続けると、素材はドリルの
形状に成型されつつ、成型口９ａの螺線面に添って回転
しながら、モールド９の先端に内って進行する。この際
、素材の内部においては、中子１１．１２によって素材
が除かれた空間が螺線状に形成される。moreover. As the piston 6 continues to move, the material is molded into the shape of a drill and advances into the tip of the mold 9 while rotating along the spiral surface of the molding opening 9a. At this time, inside the material, a space from which the material is removed by the cores 11 and 12 is formed in a spiral shape.
その位置は、常にドリルの切り刃の肉厚部Ｐ１、Ｐ２で
ある。そして適宜の長さに成型されたならば、ピストン
６の移動を停止し、被型物を取り外す。この被成型物内
部には、第４図に示すように先端から基端に至る螺線状
の貫通孔が２本形成されている。次いで、この被成型物
を焼結してドリルとする。Its position is always the thick part P1, P2 of the cutting edge of the drill. Once the molded object has been molded to an appropriate length, the movement of the piston 6 is stopped and the molded object is removed. Inside this molded object, as shown in FIG. 4, two spiral through holes extending from the tip to the base are formed. Next, this molded object is sintered to form a drill.
この様にして製造された超硬ドリル内部は、炭素鋼ある
いは高速度鋼で製造したのと同じように、螺線状の波光
が形成されている。The inside of the carbide drill manufactured in this manner has a spiral wave pattern similar to that produced with carbon steel or high-speed steel.
［発明の効果１
以上説明したように、この発明によれば、内周面が螺線
面とされた成型口の内に中子を設けたので、被成型物内
部に螺線状の孔を形成することができ、これによって螺
線状の油穴を有する超硬ドリルの寿命が可能となり、超
硬ドリルの寿命が飛躍的に伸びるり効果が得られる。[Effect of the invention 1 As explained above, according to the present invention, since the core is provided in the molding opening whose inner peripheral surface is a spiral surface, it is possible to form a spiral hole inside the object to be molded. This makes it possible to extend the life of a carbide drill with a spiral oil hole, thereby providing the effect of dramatically extending the life of the carbide drill.
第１図は、この発明の一実施例による押し出し成型機の
構成を示す断面図、第２図はモー、ルド９の成型口９ａ
の形状を示す第１図の矢視図、第３図は、中子１１．１
２が植設された中子支持部材の形状を示す正面図、第４
図および第５図は、各々ドリルと、その内部に形成され
た油穴を示す部分図である。
５・・・・・・マテリアルシリンダ、９・・・・・・モ
ールド、９ａ・・・・・・成型口、１１．１２・・・・
・・中子。
第１図
第２図
第３図
第４図
第５図FIG. 1 is a sectional view showing the configuration of an extrusion molding machine according to an embodiment of the present invention, and FIG. 2 is a mold opening 9a of a mold 9.
The arrow view of FIG. 1 and FIG. 3 show the shape of the core 11.1.
4 is a front view showing the shape of the core support member in which No. 2 is implanted;
5 and 5 are partial views showing a drill and an oil hole formed therein, respectively. 5... Material cylinder, 9... Mold, 9a... Molding mouth, 11.12...
...Nakako. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5
Claims (1)
に設けられたモールドとを備え、前記マテリアルシリン
ダ内に挿入された素材を、前記モールドの成型口から押
し出すことにより、所定の断面形状に成型する押し出し
成型機において、前記成型口の内周は螺線面とされ、か
つ前記成型口内は、被成型物内部に螺線状の孔を形成す
る中子が設けられていることを特徴とする押し出し成型
機。An extrusion molding machine comprising a material cylinder and a mold provided at the tip of the material cylinder, and molding a material inserted into the material cylinder into a predetermined cross-sectional shape by extruding it from a molding opening of the mold. An extrusion molding machine, characterized in that the inner periphery of the molding port is a spiral surface, and the inside of the molding port is provided with a core that forms a spiral hole inside the object to be molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6616885A JPS61227101A (en) | 1985-03-29 | 1985-03-29 | Extrusion molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6616885A JPS61227101A (en) | 1985-03-29 | 1985-03-29 | Extrusion molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61227101A true JPS61227101A (en) | 1986-10-09 |
| JPH0129841B2 JPH0129841B2 (en) | 1989-06-14 |
Family
ID=13308050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6616885A Granted JPS61227101A (en) | 1985-03-29 | 1985-03-29 | Extrusion molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61227101A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63277702A (en) * | 1986-12-23 | 1988-11-15 | Yoshinobu Kobayashi | Production of drill raw material |
| JPS63278612A (en) * | 1987-04-30 | 1988-11-16 | フリード・クルツプ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Extrusion press tool for manufacturing drill blank with at least one spirally extended internal lubricating hole |
| JPS63186510U (en) * | 1987-05-21 | 1988-11-30 | ||
| JPS63201010U (en) * | 1987-06-15 | 1988-12-26 | ||
| JPH01147006A (en) * | 1987-12-01 | 1989-06-08 | Yoshinobu Kobayashi | Method for producing sintered rod having spiral inner passage |
| JPH05117717A (en) * | 1991-10-25 | 1993-05-14 | Kobe Steel Ltd | Method and device for extruding rod-shaped member having spiral hole |
| WO2004002642A1 (en) * | 2002-06-29 | 2004-01-08 | Arno Friedrichs | Extrusion press tool for producing a cylindrical body consisting of a plastic mass |
-
1985
- 1985-03-29 JP JP6616885A patent/JPS61227101A/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63277702A (en) * | 1986-12-23 | 1988-11-15 | Yoshinobu Kobayashi | Production of drill raw material |
| JPH026802B2 (en) * | 1986-12-23 | 1990-02-14 | Yoshinobu Kobayashi | |
| JPS63278612A (en) * | 1987-04-30 | 1988-11-16 | フリード・クルツプ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Extrusion press tool for manufacturing drill blank with at least one spirally extended internal lubricating hole |
| JPH0450085B2 (en) * | 1987-04-30 | 1992-08-13 | Krupp Gmbh | |
| JPS63186510U (en) * | 1987-05-21 | 1988-11-30 | ||
| JPS63201010U (en) * | 1987-06-15 | 1988-12-26 | ||
| JPH039934Y2 (en) * | 1987-06-15 | 1991-03-12 | ||
| JPH01147006A (en) * | 1987-12-01 | 1989-06-08 | Yoshinobu Kobayashi | Method for producing sintered rod having spiral inner passage |
| JPH05117717A (en) * | 1991-10-25 | 1993-05-14 | Kobe Steel Ltd | Method and device for extruding rod-shaped member having spiral hole |
| WO2004002642A1 (en) * | 2002-06-29 | 2004-01-08 | Arno Friedrichs | Extrusion press tool for producing a cylindrical body consisting of a plastic mass |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0129841B2 (en) | 1989-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |