JP2513541B2 - Work positioning method - Google Patents
Work positioning methodInfo
- Publication number
- JP2513541B2 JP2513541B2 JP3183476A JP18347691A JP2513541B2 JP 2513541 B2 JP2513541 B2 JP 2513541B2 JP 3183476 A JP3183476 A JP 3183476A JP 18347691 A JP18347691 A JP 18347691A JP 2513541 B2 JP2513541 B2 JP 2513541B2
- Authority
- JP
- Japan
- Prior art keywords
- work
- positioning
- tooth profile
- meshing
- tooth
- 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.)
- Expired - Lifetime
Links
Landscapes
- Jigs For Machine Tools (AREA)
- Gear Processing (AREA)
- Forging (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、周囲に歯形を有するワ
ークにあって、例えば歯車の予備成形品に塑性加工を施
して精度を高めるべく鍛造型内へセットする場合、その
予備成形品を鍛造型に対して正確に位置決めするワーク
の位置決め方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work having a tooth profile on the periphery thereof. For example, when a preform of a gear is set in a forging die to improve its accuracy by plastic working, the preform is The present invention relates to a work positioning method for accurately positioning a work with a forging die.
【0002】[0002]
【従来の技術】前記の如く、例えば歯車の予備成形品の
ような周囲に歯形を有したワークを鍛造型内へセットす
る場合は、予備成形品の歯形を鍛造型内の歯形整形用歯
に一致するよう位置決めしなくてはならない。従来、歯
車の予備成形品を位置決めする方法としては、例えば実
公昭63−28193号公報に記載の如く、ダイス上に
設けられワークを案内するガイド本体と、このガイド本
体に回転可能に設けられ外周に凹凸を有し内周にワーク
を支持するリングと、前記ガイド本体に設けられ前記凹
凸部に対してリングを回転させる方向にエアを噴射する
噴射口とを有するワーク位置決め装置を利用し、リング
にワークを支持させ、そのリングを、ワークに形成され
た凹部がコアに形成された凸部とを一致するように回転
させることにより位置決めする技術が知られている。2. Description of the Related Art As described above, when setting a work having a tooth profile around it, such as a gear preform, in the forging die, the preform tooth profile is used as a tooth shaping tooth in the forging die. Must be positioned to match. Conventionally, as a method of positioning a preform of a gear, for example, as described in Japanese Utility Model Publication No. 63-28193, a guide body provided on a die for guiding a work, and a guide body rotatably provided on the outer periphery of the guide body. Utilizing a work positioning device having a ring having unevenness on the inner periphery to support the work on the inner periphery, and an injection port provided on the guide body for injecting air in a direction of rotating the ring with respect to the unevenness, There is known a technique in which a work is supported on a workpiece and the ring is positioned by rotating the ring so that the concave portion formed on the workpiece and the convex portion formed on the core coincide with each other.
【0003】[0003]
【発明が解決しようとする課題】従来の方法は、ワーク
に形成された凹部とコアに形成された凸部とを一致させ
ることによって位置決めするため、ワークには凸部が必
須となり、ワークである予備成形品に、位置決めの為の
みしか利用できない凸部を形成することは、無駄なこと
であった。本発明は、歯形を位置決めに有効利用するこ
と目的として開発した合理的な位置決め方法である。According to the conventional method, since the concave portion formed on the work and the convex portion formed on the core are aligned with each other, the convex portion is indispensable to the work, and the work is a workpiece. It has been wasteful to form a convex portion on the preform that can be used only for positioning. The present invention is a rational positioning method developed for the purpose of effectively utilizing the tooth profile for positioning.
【0004】[0004]
【課題を歯決するための手段】本発明の構成は、全周に
歯形を有するワークに対して、先端に前記歯形に合致し
た噛み合い歯を備えた二以上の位置決め爪を、放射方向
から中心に向って前記歯形と噛み合い可能な位置まで進
出させておき、その中央部へワークを落し込んで、位置
決め爪の噛み合い歯とワークの歯形とを噛み合わせるこ
とにより、一旦ワークの位置を正確に割り出した後、位
置決め爪との噛み合いを解除してダイ内へ誘導するワー
クの位置決め方法と、全周に歯形を有するワークに対し
て、先端に前記歯形に合致した噛み合い歯を備えた二以
上の位置決め爪を放射方向から中心に向って進出させる
ことにより、前記ワークを、その歯形と位置決め爪の噛
み合い歯とが噛み合うべく微小回転させ、一旦ワークの
位置を正確に割り出した後、位置決め爪との噛み合いを
解除してダイ内へ誘導するワークの位置決め方法とにあ
る。According to the structure of the present invention, for a work having a tooth profile on the entire circumference, two or more positioning claws having engaging teeth matching the tooth profile at the tip are provided in the radial direction. The position of the work is once accurately determined by advancing to the position where it can mesh with the tooth profile, dropping the work into the center, and meshing the meshing teeth of the positioning claw with the tooth profile of the work. After that, a work positioning method for releasing the meshing with the positioning claw and guiding the work into the die, and for a work having a tooth profile on the entire circumference, two or more positioning claws provided with meshing teeth matching the tooth profile at the tip. By advancing from the radial direction toward the center, the work is finely rotated so that its tooth profile and the meshing teeth of the positioning claw mesh, and the position of the work is accurately divided once. After, there to release the engagement between the positioning pawl to the method of positioning the workpiece to be directed into the die.
【0005】[0005]
【作用】ワークに対して放射方向から位置決め爪を進出
させることで、ワークの全周に形成されている起伏の大
きい噛み合わせ歯と、同じく起伏の大きい歯形とが、ワ
ークの微小回転により噛み合って正しく位置決めされ、
又歯形に案内用の直面又は曲面を有するチャンファが設
けられているワークでは、落し込むだけで、前記チャン
ファ面に案内されて微小回転し、歯形が位置決め爪の噛
み合い歯と噛み合ってワークの位置が正確に割り出され
る。特に前者の場合は、チャンファを有した歯形に好適
である。これらいずれの方法においても、一旦ワークの
位置を正確に割り出した後、位置決め爪との噛み合いを
解除してダイ内へ誘導するから、歯先同士が突き合わさ
るようになって割り出しができなくても、ダイ内に誘導
される前であれば何度でもやり直しができる。[Function] When the positioning claws are advanced in the radial direction with respect to the work, the meshing teeth with large undulations formed on the entire circumference of the work and the tooth profile with similar undulations mesh with each other by minute rotation of the work. Correctly positioned,
Further, in a work in which a chamfer having a face or a curved surface for guiding is provided in the tooth profile, it is guided by the chamfer surface and slightly rotates, and the tooth profile meshes with the meshing teeth of the positioning claws so that the position of the work is changed. Accurately determined. Especially in the former case, it is suitable for a tooth profile having a chamfer. In any of these methods, after the work position is accurately indexed, the engagement with the positioning claw is released and the work is guided into the die, so that even if the tooth tips come into contact with each other and indexing is not possible. , You can redo many times before being guided into the die.
【0006】[0006]
【実施例】本発明に係るワークの位置決め方法を実施す
る装置につき、冷間鍛造用の型を例にとって説明する。
1は冷間鍛造用のダイであって、周囲に歯形整形用歯2
aを備えた据込凹部2の底面中心には、エジェクタ3が
出没可能に備えられている。尚このエジェクタ3におけ
るワークとの接触面には、製品の自由な回転を防止する
ために面粗度を粗くする等の工夫をすることができる。
ダイ1の水平な上面には、そのダイ1の上面に沿い、三
等分した各放射方向へ摺動する位置決め爪4、4、4が
設けられている。位置決め爪4は、先端に、歯車の予備
成形製品であるワーク5における歯形6に合致する噛み
合い歯7が夫々3歯づつ設けられており、上部には案内
用の直面又は曲面を有するチャンファ7aが形成されて
いる。又前記歯形6にも案内用のチャンファ6aが形成
されている。8はパンチであり、前記位置決め爪4、
4、4は、そのパンチ8の昇降作動に連動し、油圧、カ
ム或はリンク機構等によって、先端の噛み合い歯7がセ
ッティングされるワーク5の歯形6と噛み合う位置まで
進出し、又据込凹部2の外周方向へ退避する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for carrying out the work positioning method according to the present invention will be described by taking a cold forging die as an example.
Reference numeral 1 is a die for cold forging, around which tooth shaping teeth 2
The ejector 3 is provided at the center of the bottom surface of the upsetting recess 2 provided with a so as to be retractable. Incidentally, the contact surface of the ejector 3 with the work can be devised such that the surface roughness is roughened in order to prevent the product from freely rotating.
Positioning claws 4, 4, 4 are provided on the horizontal upper surface of the die 1 along the upper surface of the die 1 so as to slide in the three radial directions. The positioning claw 4 is provided at its tip with three meshing teeth 7 each of which matches a tooth profile 6 of a work 5 which is a preformed product of a gear, and a chamfer 7a having a guide face or a curved surface is provided at an upper part thereof. Has been formed. A guide chamfer 6a is also formed on the tooth profile 6. 8 is a punch, and the positioning claws 4,
4 and 4 are interlocked with the raising and lowering operation of the punch 8, and are advanced to a position where the meshing tooth 7 at the tip is meshed with the tooth profile 6 of the work 5 to be set by hydraulic pressure, a cam or a link mechanism, etc. Retreat toward the outer circumference of 2.
【0007】このような位置決め機構が組みこまれた冷
間鍛造用の型によれば、先ずパンチ8が上がった状態
で、エジェクタ3は所定の位置まで押し上げられてお
り、又位置決め爪4、4、4は、先端の噛み合い歯7が
セッティングされるワーク5の歯形6と噛み合う位置ま
で進出していて、その中央部へ予備成形されたワーク5
を落し込んでセットすれば(図3)、チャンファ6a、
7aの傾斜面同士が滑り合ってワーク5は微小回転し、
噛み合い歯7へ歯形6が嵌まり込んで確実に位置決めさ
れる(図4)。位置決めが完了すると、位置決め爪4、
4、4は据込凹部2外へ退避し、ワーク5はエジェクタ
3に支持されてエジェクタ3の下降に伴って正確に位置
決めされたまま据込凹部2内へと誘導され、ワーク5の
歯形6と据込凹部2内の歯形整形用歯2aとが確実に合
致する(図5)。According to the cold forging die in which such a positioning mechanism is incorporated, the ejector 3 is pushed up to a predetermined position in the state where the punch 8 is first raised, and the positioning claws 4, 4 are provided. 4 has advanced to a position where it meshes with the tooth profile 6 of the workpiece 5 on which the meshing teeth 7 at the tip end are set, and the workpiece 5 preformed at the center thereof.
If you drop it and set it (Fig. 3), chamfer 6a,
The slanted surfaces of 7a slide against each other and the work 5 rotates slightly,
The tooth profile 6 fits into the meshing teeth 7 and is reliably positioned (FIG. 4). When the positioning is completed, the positioning claw 4,
4 and 4 are retracted to the outside of the upsetting recess 2, and the work 5 is guided by the ejector 3 into the upsetting recess 2 while being accurately positioned as the ejector 3 descends. And the tooth profile shaping tooth 2a in the upsetting recess 2 are surely matched (FIG. 5).
【0008】上記実施例は、歯形6に案内用のチャンフ
ァ6aが形成されたワークの場合を説明したが、歯形6
に案内用のチャンファ6aが形成されていないワーク5
´にあっては、先ずワーク5´をエジェクタ3で支持し
た状態にセッティングしておき、位置決め爪4、4、4
を、先端の噛み合い歯7がセッティングされるワーク5
´の歯形6と噛み合う位置まで進出させ、ワークを強制
的に微小回動させて嵌め合わせることにより位置決めす
る(図6、7)。In the above embodiment, the case in which the chamfer 6a for guiding is formed on the tooth profile 6 has been described.
Work 5 without guide chamfer 6a formed
′, The work 5 ′ is first set in a state of being supported by the ejector 3, and the positioning claws 4, 4, 4
The workpiece 5 on which the meshing teeth 7 at the tip are set
The work is advanced to a position where it meshes with the tooth profile 6 of ′, and the work is forcibly rotated by a small amount to be fitted and positioned (FIGS. 6 and 7).
【0009】前記実施例は冷間鍛造型に組み込んだもの
を説明したが、冷間鍛造型に限定するものでなく、位置
決めが必要な加工工程全般に応用でき、その場合パン
チ、エジェクタに代えて夫々プッシャ、エレベータ機構
が利用される。そして歯形が案内用のチャンファを備え
ていないワークである場合は、位置決め爪における噛み
合い歯の案内用のチャンファは、省略しても差し支えな
いし、エジェクタの上端に噛み合い面を形成した従来の
機構との併用も可能である。In the above-mentioned embodiment, the one incorporated in the cold forging die has been described, but the invention is not limited to the cold forging die, and it can be applied to all the working steps that require positioning. In that case, instead of the punch and the ejector. A pusher and an elevator mechanism are used respectively. If the tooth profile is a work that does not have a chamfer for guiding, the chamfer for guiding the interlocking teeth on the positioning claw may be omitted, and the chamfer for guiding the interlocking teeth on the upper end of the ejector may be omitted. It can be used together.
【0010】[0010]
【発明の効果】本発明によれば、歯形と噛み合い歯との
噛み合いを利用して、ワークが正確且つ合理的に位置決
めされるので、従来のようにワークに不要な凸部を形成
する必要はなくなり、作業効率が大幅にアップし、危険
性もなくなるのである。According to the present invention, since the work is accurately and reasonably positioned by utilizing the meshing between the tooth profile and the meshing teeth, it is not necessary to form an unnecessary convex portion on the work as in the conventional case. It will be eliminated, work efficiency will be greatly improved, and danger will be eliminated.
【図1】本発明に係るワークの位置決め方法を、冷間鍛
造用の型において実施した装置を示す説明図である。FIG. 1 is an explanatory view showing an apparatus for carrying out a work positioning method according to the present invention in a cold forging die.
【図2】位置決め爪の説明図である。FIG. 2 is an explanatory diagram of a positioning claw.
【図3】(a)は位置決め工程を、(b)は噛み合い状
態を夫々示す説明図である。FIG. 3A is an explanatory diagram showing a positioning step, and FIG. 3B is an explanatory diagram showing a meshed state.
【図4】(a)は位置決め工程を、(b)は噛み合い状
態を夫々示す説明図である。4A is an explanatory diagram showing a positioning step, and FIG. 4B is an explanatory diagram showing a meshed state.
【図5】噛み合い歯と歯形との噛み合い状態を示す説明
図である。FIG. 5 is an explanatory diagram showing a meshing state between meshing teeth and a tooth profile.
【図6】変更実施例における位置決め工程の説明図であ
る。FIG. 6 is an explanatory diagram of a positioning process in a modified embodiment.
【図7】(a)及び(b)は変更実施例における噛み合
い歯と歯形との噛み合い状態を示す説明図である。7A and 7B are explanatory views showing the meshing state of the meshing teeth and the tooth profile in the modified embodiment.
1・・ダイ、2・・据込凹部、2a・・歯形整形用歯、
3・・エジェクタ、4・・位置決め爪、5・・ワーク
(歯車の予備成形品)、6・・歯形、6a・・チャンフ
ァ、7・・噛み合い歯、7a・・チャンファ、8・・パ
ンチ。1 ... Die, 2 ... Upset recess, 2a ... Tooth shaping tooth,
3 ・ ・ Ejector, 4 ・ ・ Positioning claws, 5 ・ ・ Workpieces (gear preforms), 6 ・ ・ Tooth profile, 6a ・ ・ Chamfer, 7 ・ ・ Mating teeth, 7a ・ ・ Chamfer, 8 ・ ・ Punch.
Claims (2)
端に前記歯形に合致した噛み合い歯を備えた二以上の位
置決め爪を、放射方向から中心に向って前記歯形と噛み
合い可能な位置まで進出させておき、その中央部へワー
クを落し込んで、位置決め爪の噛み合い歯とワークの歯
形とを噛み合わせることにより、一旦ワークの位置を正
確に割り出した後、位置決め爪との噛み合いを解除して
ダイ内へ誘導するワークの位置決め方法。1. A workpiece having a tooth profile on the entire circumference thereof, and two or more positioning claws each having a meshing tooth matching the tooth profile at the tip thereof can be meshed with the tooth profile from the radial direction toward the center. After the work has been advanced, the work is dropped into the center and the meshing teeth of the positioning claw and the tooth profile of the work are meshed to accurately determine the position of the work once, and then the meshing with the positioning claw is released. Positioning method for guiding the workpiece into the die.
端に前記歯形に合致した噛み合い歯を備えた二以上の位
置決め爪を放射方向から中心に向って進出させることに
より、前記ワークを、その歯形と位置決め爪の噛み合い
歯とが噛み合うべく微小回転させ、一旦ワークの位置を
正確に割り出した後、位置決め爪との噛み合いを解除し
てダイ内へ誘導するワークの位置決め方法。2. With respect to a work having a tooth profile on the entire circumference, by advancing two or more positioning claws having engaging teeth matching the tooth profile at the tip from the radial direction toward the center, A method of positioning a work in which the tooth profile and the meshing teeth of the positioning claw are slightly rotated to mesh with each other, the position of the work is accurately determined, and then the meshing with the positioning claw is released to guide the work into the die.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3183476A JP2513541B2 (en) | 1991-06-27 | 1991-06-27 | Work positioning method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3183476A JP2513541B2 (en) | 1991-06-27 | 1991-06-27 | Work positioning method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH057952A JPH057952A (en) | 1993-01-19 |
JP2513541B2 true JP2513541B2 (en) | 1996-07-03 |
Family
ID=16136470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3183476A Expired - Lifetime JP2513541B2 (en) | 1991-06-27 | 1991-06-27 | Work positioning method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2513541B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100435340B1 (en) * | 2001-10-30 | 2004-06-10 | 현대자동차주식회사 | Jig for preventing rotation of work in the honing machine |
JP5274500B2 (en) * | 2010-03-29 | 2013-08-28 | ジヤトコ株式会社 | Fastening jig for gear parts |
JP6254930B2 (en) * | 2014-12-10 | 2017-12-27 | ファナック株式会社 | Gear gripping apparatus and method for gripping gears |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60164081A (en) * | 1984-02-01 | 1985-08-27 | Kawasaki Heavy Ind Ltd | Control method of regulation valve |
JPS6321945U (en) * | 1986-07-29 | 1988-02-13 | ||
JPS6328193U (en) * | 1986-08-07 | 1988-02-24 |
-
1991
- 1991-06-27 JP JP3183476A patent/JP2513541B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH057952A (en) | 1993-01-19 |
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