JP2000005838A - Plastic working method for member with hole and its equipment - Google Patents
Plastic working method for member with hole and its equipmentInfo
- Publication number
- JP2000005838A JP2000005838A JP17451098A JP17451098A JP2000005838A JP 2000005838 A JP2000005838 A JP 2000005838A JP 17451098 A JP17451098 A JP 17451098A JP 17451098 A JP17451098 A JP 17451098A JP 2000005838 A JP2000005838 A JP 2000005838A
- Authority
- JP
- Japan
- Prior art keywords
- work
- punch
- mandrel
- diameter portion
- die
- 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
Landscapes
- Forging (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本願発明は、穴付部材の塑性
加工方法及びその装置に関するものである。穴付き部材
は平歯車、あるいはヘリカルギヤーで、中心に穴が明い
ているものを意味する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for plastic working of a holed member. The holed member means a spur gear or a helical gear having a hole at the center.
【０００２】[0002]
【従来の技術】従来、このような部材は特開平５―３０
９４３４に開示されているような方法で行われていた。
即ち、この公開公報には、大径部と小径部を有するマン
ドレルを素材から引き抜きながら素材の外部を押圧する
ことによって、素材の流動を促し、素材をキャビテイの
隅々まで充満させる技術が開示されている。2. Description of the Related Art Conventionally, such a member has been disclosed in
9434.
That is, this publication discloses a technique in which a material having a large-diameter portion and a small-diameter portion is pulled out of the material while pressing the outside of the material, thereby promoting the flow of the material and filling the material to every corner of the cavity. ing.
【０００３】上記従来の方法によると、製品の形状、素
材の材質、あるいはパンチに加える力によっては、製品
の肩部分に図６に示すような欠肉が生ずることがある。[0003] According to the above-mentioned conventional method, the underfill as shown in FIG. 6 may occur at the shoulder of the product depending on the shape of the product, the material of the material, or the force applied to the punch.
【０００４】[0004]
【発明が解決しようとする課題】本願発明は、素材の流
動を更に促し、製品の肩部に欠肉が生じないようにする
ための方法及びその装置を提供することである。即ち、
本願発明は、上記公開公報に開示された技術の改良に関
するものと言える。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus for further promoting the flow of a material and preventing the occurrence of underfill on the shoulder of a product. That is,
It can be said that the present invention relates to an improvement of the technology disclosed in the above publication.
【０００５】[0005]
【課題を解決するための手段】本願発明においては、大
径部と小径部を有するマンドレルを素材から引き抜きな
がら素材に圧力を掛けるのに加えて、素材の穴部近傍に
圧力を掛けるリングパンチを設け、このリングパンチに
加える力を加減して素材の流動を促す。According to the present invention, in addition to applying pressure to a material while pulling out a mandrel having a large-diameter portion and a small-diameter portion from the material, a ring punch for applying pressure near a hole of the material is provided. The force applied to the ring punch is adjusted to promote the flow of the material.
【０００６】[0006]
【発明の実施の形態】図１から図５は本願発明を実施し
た場合の成形の行程を示すものである。図２は、成形途
中の状態を示している。図２を用いて、各部材の説明を
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 show a molding process when the present invention is carried out. FIG. 2 shows a state in the middle of molding. Each member will be described with reference to FIG.
【０００７】図２において、プレス機械のスライドに上
ダイプレート１が、プレス機械のボルスタに下ダイプレ
ートが夫々固定されている。In FIG. 2, an upper die plate 1 is fixed to a slide of a press machine, and a lower die plate is fixed to a bolster of the press machine.
【０００８】上ダイプレート１には上パンチ６が固定さ
れ、上パンチ６にはリングパンチ４とマンドレル３が組
み込まれている。リングパンチ４は上パンチ６の内径部
で案内されると共に、上ダイプレート１に組み込まれて
いるクッションピン５で付勢され、昇降自在になってい
る。An upper punch 6 is fixed to the upper die plate 1, and a ring punch 4 and a mandrel 3 are incorporated in the upper punch 6. The ring punch 4 is guided by the inner diameter of the upper punch 6 and is urged by a cushion pin 5 incorporated in the upper die plate 1 so as to be able to move up and down.
【０００９】マンドレル３は、リングパンチ４に組み込
まれ頭部をばねで付勢され昇降自在になっている。マン
ドレル３は頭部、大径部及び小径部で構成されている。
本実施例においては、大径部と小径部が若干の段違いに
なっているが、大径部と小径部に相当の差を設け、両者
をテーパ状に接続させても良い。いずれにしても、この
大径部と小径部は後述するように製品が形成されるのに
大きく貢献する。The mandrel 3 is incorporated in a ring punch 4 and its head is urged by a spring so that it can move up and down. The mandrel 3 includes a head, a large diameter portion, and a small diameter portion.
In this embodiment, the large-diameter portion and the small-diameter portion are slightly stepped, but a considerable difference may be provided between the large-diameter portion and the small-diameter portion, and the two may be tapered. In any case, the large diameter portion and the small diameter portion greatly contribute to the formation of a product as described later.
【００１０】下ダイプレート２には、筒体８が固定され
ている。筒体８の上部には鉤状部が設けられている。A cylindrical body 8 is fixed to the lower die plate 2. A hook portion is provided at the upper part of the cylinder 8.
【００１１】筒体８には、ダイ７が組み込まれ筒体８の
内径部で案内されると共に、ばねで下部を付勢され昇降
自在になっている。ダイ７の穴は大径部と小径部とで構
成されている。この大径部には平歯車、はすば歯車のよ
うな凹凸が設けられいる。この部分の形状が転写されて
製品の外形部の形状になる。そして、この部分に欠肉が
発生しないようにすることが重要である。A die 7 is incorporated in the cylinder 8 and is guided by the inner diameter of the cylinder 8, and the lower part is urged by a spring so as to be able to move up and down. The hole of the die 7 has a large diameter portion and a small diameter portion. The large diameter portion is provided with irregularities such as a spur gear and a helical gear. The shape of this part is transferred and becomes the shape of the outer shape of the product. Then, it is important to prevent the occurrence of underfill in this portion.
【００１２】ダイ７には、カウンタパンチ９が組み込ま
れている。カウンタパンチ９はその下限位置で下部が下
ダイプレート２で受けられると共に、ダイ７の内径部で
案内され昇降自在になっている。The die 7 has a counter punch 9 incorporated therein. The lower portion of the counter punch 9 is received by the lower die plate 2 at its lower limit position, and is guided by the inner diameter of the die 7 so as to be able to move up and down.
【００１３】下ダイプレート２には、ノックアウトピン
１１が組み込まれている。このノックアウトピン１１は
前述のボルスタあるいはボルスタが固定されているベッ
ドに設けられたノックアウトシリンダ１２に嵌合してい
て、ノックアウトシリンダ１２に供給された圧油によっ
て付勢され、昇降自在になっている。A knockout pin 11 is incorporated in the lower die plate 2. The knockout pin 11 is fitted to a knockout cylinder 12 provided on the bolster or a bed to which the bolster is fixed, and is urged by pressure oil supplied to the knockout cylinder 12 to be able to move up and down. .
【００１４】ノックアウトピン１１は中間部に設けられ
た段部でカウンタパンチ９を押し上げる機能を有する。
カウンタパンチ９が上昇しながら回転する場合、即ち、
前記ダイ７の穴の大径部にはすば歯車が設けられ、成形
を終了したワーク１０をダイ７から取り出す際に回転さ
せる必要がある場合は、前記段部とカウンタパンチ９と
の間にスラストベアリングを介在させることになる。The knockout pin 11 has a function of pushing up the counter punch 9 at a step provided at an intermediate portion.
When the counter punch 9 rotates while rising, that is,
A helical gear is provided in the large diameter portion of the hole of the die 7. When it is necessary to rotate the formed work 10 when removing the work 10 from the die 7, the work is placed between the stepped portion and the counter punch 9. A thrust bearing is interposed.
【００１５】上述の装置を用いて素材を成形して製品を
得る手順を以下に説明する。A procedure for forming a material by using the above-described apparatus to obtain a product will be described below.
【００１６】図１において、最初、ワーク１０がダイ７
に供給されるときには、上ダイプレート１がスライドと
共に上方部にあり、上パンチ６に組み込まれた部材も上
方部にある。In FIG. 1, first, a work 10 is
When the upper die plate 1 is supplied to the upper punch 6, the upper die plate 1 is at the upper portion together with the slide, and the member incorporated in the upper punch 6 is also at the upper portion.
【００１７】このとき、ダイ７はばねで下面を押されて
上昇していて、ダイ７の上面外周の段部が筒体８の鉤状
部に係合している。さらに、ノックアウトピン１１は下
降している。At this time, the die 7 is pushed upward by the lower surface thereof by the spring, and the step on the outer periphery of the upper surface of the die 7 is engaged with the hook-like portion of the cylindrical body 8. Further, knockout pin 11 is lowered.
【００１８】各部材がこの状態にあるときに、素材であ
るワーク１０がダイ７とカウンタパンチ９とで形成され
た窪みに供給される。ワーク１０の大径部はダイ７で保
持され、ワーク１０の下面はカウンタパンチ９で受けら
れている。即ち、素材としてのワーク１０は最終の製品
のそれよりも、小径部がはるかに長いプロポーションで
ある。When each member is in this state, the work 10 as a material is supplied to the depression formed by the die 7 and the counter punch 9. The large diameter portion of the work 10 is held by the die 7, and the lower surface of the work 10 is received by the counter punch 9. That is, the proportion of the workpiece 10 as the material is much smaller than that of the final product.
【００１９】図２において、プレス機械が起動され、ス
ライドが下降してくると、マンドレル３がワーク１０に
挿入される。素材としてのワーク１０に明けられている
穴は、マンドレル３の大径部が抵抗無く入る程度の穴径
になっている。従って、マンドレル３の小径部と大径部
で形成される段部はカウンタパンチ９の上面部に当接す
る状態になる。In FIG. 2, when the press machine is started and the slide descends, the mandrel 3 is inserted into the work 10. The hole formed in the workpiece 10 as a material has such a diameter that the large diameter portion of the mandrel 3 can enter without resistance. Therefore, the step formed by the small diameter portion and the large diameter portion of the mandrel 3 comes into contact with the upper surface of the counter punch 9.
【００２０】図３において、スライドが下降すると上パ
ンチ６は下降して、ダイ７を押し下げる。このとき、リ
ングパンチ４はクッションピン５で下方に向けて付勢さ
れている。ワーク１０はダイ７で外周部を拘束され、上
パンチ６、リングパンチ４及びカウンタパンチ９で押さ
れてマンドレル３の大径部近傍の材料は小径部近傍に流
動する。この材料の流動に促されてワーク１０の大径部
の材料が流動して前記歯車のような凹凸が成形される。In FIG. 3, when the slide is lowered, the upper punch 6 is lowered to push down the die 7. At this time, the ring punch 4 is urged downward by the cushion pin 5. The outer periphery of the work 10 is constrained by the die 7, and is pushed by the upper punch 6, the ring punch 4 and the counter punch 9, and the material near the large diameter portion of the mandrel 3 flows near the small diameter portion. The material in the large-diameter portion of the work 10 flows by the flow of the material, and the unevenness like the gear is formed.
【００２１】前記マンドレル３近傍の材料の流動と、ワ
ーク１０の外形部近傍の材料の流動がスムーズに行われ
るように、ノックアウトシリンダ１２に圧油を供給して
ノックアウトピン１１を上昇させることによりマンドレ
ル３を徐々に押し上げる。The mandrel is supplied by supplying pressurized oil to the knockout cylinder 12 to raise the knockout pin 11 so that the flow of the material in the vicinity of the mandrel 3 and the flow of the material in the vicinity of the outer shape of the work 10 are smoothly performed. 3. Push up gradually.
【００２２】スライドの下降に伴って、上記一連の動作
が進むと、ワーク１０の成形は一応終わる。しかし、こ
れだけでは、前述したように、図６に示す欠肉１４が発
生することが考えられる。When the above-described series of operations proceeds as the slide descends, the forming of the work 10 is temporarily completed. However, only with this, as described above, the underfill 14 shown in FIG. 6 may occur.
【００２３】図４において、クッションピン５によるリ
ングパンチ４の付勢力を解放する。すると、ワーク１０
の材料がリングパンチ４に向けて流動する。この流動に
促されてワーク１０の上部近傍の材料が流動し易くな
り、ワーク１０の上部外周部近傍の材料が前記の欠肉部
を埋める。In FIG. 4, the urging force of the ring punch 4 by the cushion pin 5 is released. Then, work 10
Flows toward the ring punch 4. The material near the upper part of the work 10 becomes easier to flow due to the flow, and the material near the outer peripheral part of the upper part of the work 10 fills the above-mentioned underfill.
【００２４】図５において、スライドが上昇を開始し、
これに伴ってマンドレル３、ダイ７などが上昇する。筒
体８の鉤部でストップされてダイ７は上限に達する。そ
して、マンドレル３はワーク７から抜ける。In FIG. 5, the slide starts to rise,
Accordingly, the mandrel 3, the die 7, and the like are raised. The die 7 reaches the upper limit by being stopped at the hook of the cylinder 8. Then, the mandrel 3 comes off from the work 7.
【００２５】ワーク１０はダイ７の穴に残るが、ノック
アウトピン１１の段部で押されダイ７から取り出され
る。The work 10 remains in the hole of the die 7, but is pushed out by the step of the knockout pin 11 and taken out of the die 7.
【００２６】上記一連の動作が繰り返されることによ
り、順次製品が出来る。尚、リングパンチ４の作用によ
ってワーク１０の上面部には凸部が形成されるが、この
部分は製品の一部になる場合と、ならない場合とがあ
る。無論、後者の場合はこの凸部は後工程で除去される
ことになる。By repeating the above-described series of operations, products are sequentially produced. A convex portion is formed on the upper surface of the work 10 by the action of the ring punch 4, and this portion may or may not be a part of the product. Of course, in the latter case, the projections will be removed in a later step.
【００２７】[0027]
【発明の効果】本願発明によれば、マンドレル３の作用
でワーク１０の外形部の凹凸部はほぼ完全に成形され、
更にリングパンチ４の作用でワーク１０の上部外周部の
欠肉の発生は完全に防止される。According to the present invention, the irregularities of the outer shape of the work 10 are almost completely formed by the operation of the mandrel 3,
Further, the action of the ring punch 4 completely prevents the occurrence of underfill in the upper outer peripheral portion of the work 10.
【図１】装置の縦断面図FIG. 1 is a longitudinal sectional view of the apparatus.
【図２】装置の縦断面図FIG. 2 is a longitudinal sectional view of the apparatus.
【図３】装置の縦断面図FIG. 3 is a longitudinal sectional view of the apparatus.
【図４】装置の縦断面図FIG. 4 is a longitudinal sectional view of the apparatus.
【図５】装置の縦断面図FIG. 5 is a longitudinal sectional view of the device.
【図６】欠肉の説明図FIG. 6 is an explanatory diagram of underfill.
１は上ダイプレート、２は下ダイプレート、３はマンド
レル、４はリングパンチ、５はクッションピン、６は上
パンチ、７はダイ、８は筒体、９はカウンタパンチ、１
０はワーク、１１はノックアウトピン、１２はノックア
ウトシリンダ、１３はワーク、１４は欠肉である。1 is an upper die plate, 2 is a lower die plate, 3 is a mandrel, 4 is a ring punch, 5 is a cushion pin, 6 is an upper punch, 7 is a die, 8 is a cylinder, 9 is a counter punch, 1
Reference numeral 0 denotes a work, reference numeral 11 denotes a knockout pin, reference numeral 12 denotes a knockout cylinder, reference numeral 13 denotes a work, and reference numeral 14 denotes an underfill.
Claims (8)
の前記大径部をワーク（１０）の穴に挿入し、前記ワー
クの外周部をダイ（７）で拘束し、前記ワーク（１０）
の底部をカウンタパンチ（９）で受けて、前記ワーク
（１０）の頭部を上パンチ（６）で押圧して前記マンド
レル（３）を前記大径部の方向に移動させながら前記ワ
ーク（１０）を成形する方法において、前記上パンチ
（６）と前記マンドレル（３）との間に組み込まれたリ
ングパンチ（４）を、前記ワーク（１０）に向けて付勢
させ、前記ワーク（１０）の成形が一応終えた時点で前
記リングパンチ（４）に作用している付勢力を解放させ
ることを特徴とする穴付部材の塑性加工方法。A mandrel having a large diameter portion and a small diameter portion.
Is inserted into a hole of the work (10), and the outer periphery of the work is restrained by a die (7).
The bottom of the work (10) is received by a counter punch (9), and the head of the work (10) is pressed by an upper punch (6) to move the mandrel (3) in the direction of the large diameter portion. ), A ring punch (4) incorporated between the upper punch (6) and the mandrel (3) is urged toward the work (10) to form the work (10). The plastic working method of the holed member, wherein the urging force acting on the ring punch (4) is released at the time when the forming of the hole is completed.
ン（５）で付勢することを特徴とする請求項１記載の穴
付部材の塑性加工方法。2. The method according to claim 1, wherein the ring punch is biased by a cushion pin.
アウトピン（１１）で移動させることを特徴とする請求
項２記載の穴付部材の塑性加工方法。3. The method according to claim 2, wherein the mandrel is moved by a vertically movable knockout pin.
ン（１１）に設けた段部で前記ダイ（７）からノックア
ウトされることを特徴とする請求項３記載の穴付部材の
塑性加工方法。4. The method according to claim 3, wherein the workpiece is knocked out of the die at a step provided on the knockout pin.
（１０）の穴に挿入するマンドレル（３）を設け、前記
ワークの外周部を拘束するダイ（７）を設け、前記ワー
ク（１０）の底部を受けるカウンタパンチ（９）を設
け、前記ワーク（１０）の頭部を上パンチ（６）で押圧
して前記マンドレル（３）を前記大径部の方向に移動さ
せながら前記ワーク（１０）を成形する装置において、
前記上パンチ（６）と前記マンドレル（３）との間に前
記ワーク（１０）に向けて付勢され、前記ワーク（１
０）の成形が一応終えた時点で当該付勢力が解放される
リングパンチ（４）を設けたことを特徴とする穴付部材
の塑性加工装置。5. A mandrel (3) having a large-diameter portion and a small-diameter portion, the large-diameter portion being inserted into a hole of a work (10), a die (7) for restraining an outer peripheral portion of the work is provided, A counter punch (9) for receiving the bottom of the work (10) is provided, and the head of the work (10) is pressed by an upper punch (6) to move the mandrel (3) in the direction of the large diameter portion. In the apparatus for molding the work (10),
The work (10) is urged between the upper punch (6) and the mandrel (3) toward the work (10).
A plastic working apparatus for a holed member, comprising: a ring punch (4) for releasing the urging force when the molding of (0) is completed.
ョンピン（５）を設けたことを特徴とする請求項５記載
の穴付部材の塑性加工装置。6. An apparatus according to claim 5, further comprising a cushion pin (5) for urging said ring punch (4).
アウトピン（１１）を設けたことを特徴とする請求項６
記載の穴付部材の塑性加工装置。7. A knockout pin (11) for raising and lowering the mandrel (3).
A plastic working device for a member with holes as described in the above.
ノックアウトするための段部を前記ノックアウトピン
（１１）に設けたことを特徴とする請求項７記載の穴付
部材の塑性加工装置。8. The apparatus according to claim 7, wherein a step portion for knocking out the workpiece (10) from the die (7) is provided on the knockout pin (11). .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17451098A JP3659616B2 (en) | 1998-06-22 | 1998-06-22 | Plastic working method for holed members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17451098A JP3659616B2 (en) | 1998-06-22 | 1998-06-22 | Plastic working method for holed members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000005838A true JP2000005838A (en) | 2000-01-11 |
| JP3659616B2 JP3659616B2 (en) | 2005-06-15 |
Family
ID=15979779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17451098A Expired - Fee Related JP3659616B2 (en) | 1998-06-22 | 1998-06-22 | Plastic working method for holed members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3659616B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143977A (en) * | 2000-08-30 | 2002-05-21 | Honda Motor Co Ltd | Gear forming method and device |
| KR101196668B1 (en) | 2010-04-07 | 2012-11-02 | 한국기계연구원 | Precision forging device of helical gear for car transmissions |
| CN102941239A (en) * | 2012-11-28 | 2013-02-27 | 力帆实业(集团)股份有限公司 | Starting dynamo isolator gear wheel cold extrusion die |
| CN109482807A (en) * | 2018-12-19 | 2019-03-19 | 四川民盛特钢锻造有限公司 | The crude green body forging mold and its forging method of dual stage gear formed forgings |
| CN113547064A (en) * | 2021-07-20 | 2021-10-26 | 中南大学 | Automobile reducer planet composite gear integrated configuration and forging mould |
-
1998
- 1998-06-22 JP JP17451098A patent/JP3659616B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143977A (en) * | 2000-08-30 | 2002-05-21 | Honda Motor Co Ltd | Gear forming method and device |
| JP4607354B2 (en) * | 2000-08-30 | 2011-01-05 | 本田技研工業株式会社 | Gear forming method and apparatus |
| KR101196668B1 (en) | 2010-04-07 | 2012-11-02 | 한국기계연구원 | Precision forging device of helical gear for car transmissions |
| CN102941239A (en) * | 2012-11-28 | 2013-02-27 | 力帆实业(集团)股份有限公司 | Starting dynamo isolator gear wheel cold extrusion die |
| CN109482807A (en) * | 2018-12-19 | 2019-03-19 | 四川民盛特钢锻造有限公司 | The crude green body forging mold and its forging method of dual stage gear formed forgings |
| CN113547064A (en) * | 2021-07-20 | 2021-10-26 | 中南大学 | Automobile reducer planet composite gear integrated configuration and forging mould |
| WO2022148502A3 (en) * | 2021-07-20 | 2022-08-25 | 中南大学 | Vehicle reduction drive planetary composite gear combination structure and forging mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3659616B2 (en) | 2005-06-15 |
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