JP2505846Y2 - Disk-shaped flange material manufacturing equipment - Google Patents
Disk-shaped flange material manufacturing equipmentInfo
- Publication number
- JP2505846Y2 JP2505846Y2 JP4707391U JP4707391U JP2505846Y2 JP 2505846 Y2 JP2505846 Y2 JP 2505846Y2 JP 4707391 U JP4707391 U JP 4707391U JP 4707391 U JP4707391 U JP 4707391U JP 2505846 Y2 JP2505846 Y2 JP 2505846Y2
- Authority
- JP
- Japan
- Prior art keywords
- punch
- shaped flange
- forging
- piercing
- annular recess
- 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
- Forging (AREA)
Description
【0001】[0001]
【産業上の利用分野】本考案は、自動車の流体式自動変
速機等に使用されるクラッチピストンのような円盤状フ
ランジ部品の予備成形素材となる円盤状フランジ素材の
製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk-shaped flange material manufacturing apparatus which is a preforming material for disk-shaped flange parts such as clutch pistons used in fluid automatic transmissions of automobiles.
【0002】[0002]
【従来の技術】従来、この種の円盤状フランジ部品は、
温間または熱間において鍛造成形されている。即ち、所
定外径の棒状素材を所定長さに剪断した素材をショット
ピーニング処理後、温間または熱間鍛造温度域に高周波
加熱して、予備成形及び打ち抜きの各鍛造工程を実施
し、図1に示す如き円盤状フランジ素材1を得る。その
後、この円盤状フランジ素材1には再度ショットピーニ
ングが施され、更に切削加工により削り代が除去され、
レース仕上げされた円盤状フランジ部品が造られてい
た。2. Description of the Related Art Conventionally, a disk-shaped flange component of this type is
It is forged while warm or hot. That is, a material obtained by shearing a rod-shaped material having a predetermined outer diameter to a predetermined length is shot peened, and then is subjected to high frequency heating in a warm or hot forging temperature range, and each forging step of preforming and punching is performed, A disc-shaped flange material 1 as shown in is obtained. After that, the disk-shaped flange material 1 is again shot-peened, and the cutting allowance is removed by cutting,
A race-finished disk-shaped flange component was made.
【0003】[0003]
【考案が解決しようとする課題】図7は前述のような打
ち抜き成形工程を示すものだが、素材101が軸線方向
の肉厚の薄い円盤形状であり、ピアスパンチ124の断
面積が比較的大径であるため、その打ち抜き時にピアス
パンチの124の押圧方向に反った歪みが特に素材中央
に生じ易く、適当な矯正工程を施さなければならなかっ
た。FIG. 7 shows the punching and forming process as described above, but the material 101 is a disk shape with a thin wall thickness in the axial direction, and the cross-sectional area of the piercing punch 124 is relatively large. Therefore, the warp in the pressing direction of the piercing punch 124 is particularly likely to occur at the center of the material during the punching, and an appropriate straightening step must be performed.
【0004】この点、素材の歪み矯正工程を独立して設
けると、生産効率が悪く成るという問題がある。また、
歪みのある素材を再度鍛造するにしても、クランクプレ
スの如く動圧を短時間加えるだけでは、矯正荷重除去後
にスプリングバックが生じ、歪みは十分矯正されない問
題があった。In this regard, if the material straightening process is independently provided, there is a problem that the production efficiency is deteriorated. Also,
Even if the strained material is forged again, there is a problem that if the dynamic pressure is applied for a short time like a crank press, springback occurs after the correction load is removed and the strain is not corrected sufficiently.
【0005】[0005]
【課題を解決するための手段】本考案は、以下の如き構
成である。The present invention has the following structure.
【0006】1.フランジ部の上端面を形成すべき予備
鍛造パンチの先端面に環状凹部が設けられており、該環
状凹部は予備鍛造パンチの軸心軸から遠心する緩勾配を
有すると共に、該環状凹部の内容積は中心孔ピアス時の
素材歪み量の約70〜90%である。1. An annular recess is provided on the tip surface of the pre-forging punch to form the upper end surface of the flange portion, and the annular recess has a gentle gradient centrifugal from the axis of the pre-forging punch and has an internal volume of the annular recess. Is about 70 to 90% of the amount of material strain when the center hole is pierced.
【0007】2.中心孔のピアスパンチの先端部外周に
鋭角の周状凸部が設けられている。2. An acute-angled circumferential projection is provided on the outer circumference of the tip of the piercing punch in the center hole.
【0008】[0008]
【実施例】以下、本考案の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【0009】図3は、図2で示される予備鍛造素材5を
温間または熱間において鍛造成形する予備鍛造装置11
を示すもので、12は上金型で、18は下金型である。
上金型12は受圧板13、パンチホルダ15によって固
定された予備鍛造パンチ14、及び予備鍛造パンチ14
を固定する締付リング16とを有する。下金型18は上
金型12に固定されたパンチ14対向面に型彫空間19
aが形成された下型19と、下型19の内周孔に摺動自
在に嵌合され前記型彫空間19aに出入りするノックア
ウトパンチ20とを有する。FIG. 3 shows a preliminary forging device 11 for forging the preliminary forging material 5 shown in FIG. 2 while warm or hot.
12 is an upper mold and 18 is a lower mold.
The upper die 12 includes a pressure receiving plate 13, a preliminary forging punch 14 fixed by a punch holder 15, and a preliminary forging punch 14.
And a tightening ring 16 for fixing. The lower die 18 has a die engraving space 19 on the surface facing the punch 14 fixed to the upper die 12.
It has a lower die 19 in which a is formed, and a knockout punch 20 which is slidably fitted in an inner peripheral hole of the lower die 19 and which moves in and out of the die engraving space 19a.
【0010】図5に、前記予備鍛造パンチ14の先端部
の拡大図を示す。図2に示されるような予備鍛造素材5
のフランジ部6の上端面形状を形成すべき予備鍛造パン
チ14の先端面に環状凹部14aが設けられており該環
状凹部14aは前記予備鍛造パンチ14の軸心軸Pから
遠心する緩勾配αを有する。FIG. 5 shows an enlarged view of the tip of the preliminary forging punch 14. Pre-forging material 5 as shown in FIG.
An annular recess 14a is provided on the tip surface of the pre-forging punch 14 that is to form the upper end surface shape of the flange portion 6. The annular recess 14a has a gentle gradient α that is centrifugal from the axis P of the pre-forging punch 14. Have.
【0011】図8は、ピアス時の素材歪み量をA、予備
鍛造パンチ14における環状凹部14aの内容積をBと
して、AとBの相対比率に関して、ピアス時の歪み(m
m)の発生を測定した結果を示すグラフである。この測
定結果からも明らかなように、ピアス時の歪みの発生を
抑止できる環状凹部14aの内容積Bは、後工程におけ
る中心孔4ピアス時の素材歪み量Aの約70〜90%で
ある。90%を超えると、ピアスパンチ24の押圧方向
とは逆の方向に歪みを生じ、その結果ピアス後のフラン
ジ部2上端面に膨みを残すことになる。FIG. 8 shows the strain amount (m) in the piercing with respect to the relative ratio of A and B, where A is the amount of material strain during piercing and B is the inner volume of the annular recess 14a in the pre-forging punch 14.
It is a graph which shows the result of having measured occurrence of m). As is clear from this measurement result, the inner volume B of the annular recess 14a that can suppress the occurrence of strain during piercing is approximately 70 to 90% of the material strain amount A during piercing of the center hole 4 in the subsequent step. If it exceeds 90%, distortion occurs in the direction opposite to the pressing direction of the piercing punch 24, and as a result, bulges are left on the upper end surface of the flange portion 2 after piercing.
【0012】次に、前記予備鍛造素材5の中央部8cを
打ち抜いて図1に示されるような円盤状フランジ素材1
を成形する打ち抜き成形装置21を図4に示す。Next, the central portion 8c of the preliminary forging material 5 is punched out and the disc-shaped flange material 1 as shown in FIG.
FIG. 4 shows a punching molding apparatus 21 for molding the.
【0013】図において、22は上金型で、28は下金
型である。上金型22は、受圧板23、パンチホルダ2
6によって固定されたピアスパンチ24、該ピアスパン
チ24と軸線方向に相対移動可能に装着された上型2
5、その上型25の進退を案内する上型ホルダ33、及
びこれらを受圧板23に固定する締付リング27とを有
する。また、この上金型22には、上型25の先端面を
下金型28に向けて押圧するスプリング32が設けられ
ている。下金型28は、上型25対向面にも環状凸部が
形成された下型29と、下型29外周を囲繞するダイリ
ング30とを有する。In the figure, 22 is an upper mold and 28 is a lower mold. The upper die 22 includes the pressure receiving plate 23 and the punch holder 2
6, the piercing punch 24 fixed by 6, and the upper die 2 mounted so as to be movable relative to the piercing punch 24 in the axial direction.
5, an upper die holder 33 that guides the upper die 25 back and forth, and a tightening ring 27 that fixes these to the pressure receiving plate 23. Further, the upper mold 22 is provided with a spring 32 that presses the tip surface of the upper mold 25 toward the lower mold 28. The lower mold 28 has a lower mold 29 having an annular convex portion formed on the surface facing the upper mold 25, and a die ring 30 surrounding the outer periphery of the lower mold 29.
【0014】前記ピアスパンチ24は、その先端部を拡
大して図6に示すように、円盤状フランジ部品1の中心
孔4を穿孔形成するもので、該ピアスパンチ24の先端
部外周に鋭角βを有する周状凸部24aが設けられてい
る。As shown in FIG. 6, the piercing punch 24 is enlarged to form a central hole 4 of the disk-shaped flange component 1, and an acute angle β is formed on the outer periphery of the piercing punch 24. A circumferential convex portion 24a having a circle is provided.
【0015】次に、本考案の製造装置を用いた円盤状フ
ランジ素材の成形方法を説明する。Next, a method of forming a disc-shaped flange material using the manufacturing apparatus of the present invention will be described.
【0016】所定外径の棒状素材を所定長さに剪断した
素材をショットピーニング処理後、温間または熱間鍛造
温度域に高周波加熱し、図3に示される予備鍛造装置1
1の下型19型彫空間19a内に供給する。そして図示
の如く上金型12を下降させて予備鍛造成形が行われ
る。A material obtained by shearing a rod-shaped material having a predetermined outer diameter to a predetermined length is shot-peened, and then is subjected to high-frequency heating in a warm or hot forging temperature range, and a preliminary forging apparatus 1 shown in FIG.
The lower mold 19 of 1 is supplied into the engraving space 19a. Then, as shown in the drawing, the upper die 12 is lowered to perform pre-forging.
【0017】それにより、上金型12に固定された予備
鍛造パンチ14の先端部が素材に当接し、押圧すること
により、成形された予備鍛造素材5のフランジ部6の上
端面形状が、予備鍛造パンチ14の先端部の形状に倣っ
て形成される。即ち、前述の如き環状凹部14aをその
先端部に有する予備鍛造パンチ14により成形される予
備鍛造素材5の上端面に、後工程のピアス時の素材歪み
量Aより若干小さいボリュームを有する環状凸部10
が、図2に示される如く形成される。環状凸部10のボ
リューム量は、予備鍛造パンチ14の環状凹部14aの
内容積Bと同一で、ピアス時の素材歪み量Aの約70〜
90%程度となる。As a result, the tip portion of the pre-forging punch 14 fixed to the upper die 12 comes into contact with the material and presses it so that the shape of the upper end surface of the flange portion 6 of the pre-forged material 5 formed is preliminarily changed. It is formed following the shape of the tip of the forging punch 14. That is, an annular convex portion having a volume slightly smaller than the material strain amount A at the time of piercing in the subsequent step is formed on the upper end surface of the preliminary forging material 5 formed by the preliminary forging punch 14 having the annular concave portion 14a at the tip thereof. 10
Are formed as shown in FIG. The volume amount of the annular convex portion 10 is the same as the inner volume B of the annular concave portion 14a of the pre-forging punch 14, and is about 70 to about the material strain amount A during piercing.
It will be about 90%.
【0018】続いて、前記予備鍛造素材5を図4に示さ
れる打ち抜き成形装置21の上下金型22,28間にセ
ットし、図4右半部の如く上金型22を下降させて打ち
抜き成形が行われる。Next, the preliminary forging material 5 is set between the upper and lower molds 22 and 28 of the punching molding apparatus 21 shown in FIG. 4, and the upper mold 22 is lowered as shown in the right half of FIG. Is done.
【0019】それにより、外周に鋭角βを有する周状凸
部24aが設けられたピアスパンチ24の先端部が、図
4左半部に示される如く予備成形素材5の打ち抜かれる
べき中心部8cに当接し、上金型22の下降に従い前記
ピアスパンチ24の下降が進行する。打ち抜き成形初期
において、ピアスパンチ24先端の鋭角βの周状凸部2
4aにより、中心孔成形箇所である中心部8cに、中心
孔4の輪郭が剪断成形された後、ピアスパンチ24の下
降が更に進行することにより、図4右半部の如く中心孔
4が打ち抜かれる。As a result, the tip of the piercing punch 24 provided with the circumferential convex portion 24a having the acute angle β on the outer periphery becomes the center portion 8c of the preforming material 5 to be punched, as shown in the left half of FIG. The piercing punch 24 abuts and the lowering of the upper die 22 advances the lowering of the piercing punch 24. In the initial stage of punching, the circumferential convex portion 2 having an acute angle β at the tip of the piercing punch 24.
4a, after the contour of the central hole 4 is shear-molded at the central portion 8c, which is the central hole-forming portion, the lowering of the piercing punch 24 further advances, so that the central hole 4 is punched out as shown in the right half of FIG. Be done.
【0020】上記打ち抜き成形において、予備成形素材
5上端面には打ち抜き時の素材歪量の約70〜90%の
ボリュームを有する環状凸部10が予め形成されている
ので、打ち抜き時のピアスパンチ24押圧方向への素材
の歪みを発生させることがなく、中心孔4を打ち抜き成
形することができる。In the above punching forming, since the annular convex portion 10 having a volume of about 70 to 90% of the material strain amount at the time of punching is formed on the upper end surface of the preforming material 5, the piercing punch 24 at the time of punching is formed. The center hole 4 can be stamped and formed without causing distortion of the material in the pressing direction.
【0021】更に、ピアスパンチ24先端の鋭角βの周
状凸部24aにより、中心孔4の輪郭が剪断成形された
後中心孔4が打ち抜き成形されるので、打ち抜き時の応
力負荷が緩和され、打ち抜き時のピアスパンチ24押圧
方向への素材の歪みを発生させることなく、中心孔4を
打ち抜き成形することができる。Furthermore, since the contour of the center hole 4 is shear-molded by the peripheral convex portion 24a of the acute angle β at the tip of the piercing punch 24, the center hole 4 is punch-molded, so that the stress load at the time of punching is alleviated. The center hole 4 can be punched without causing distortion of the material in the pressing direction of the piercing punch 24 during punching.
【0022】[0022]
【考案の効果】以上のように本考案によれば、予備鍛造
素材の上端面には、打ち抜き時の素材歪量の約70〜9
0%のボリュームを有する環状凸部が形成されているの
で、打ち抜き時のピアスパンチ押圧方向への素材の歪み
を発生させることなく、中心孔を打ち抜き成形すること
ができる。従って、成形素材の歪み矯正工程を独立させ
て設ける必要がなく、生産効率が向上する。As described above, according to the present invention, the upper end surface of the pre-forged material has a strain amount of about 70 to 9 of the material strain at the time of punching.
Since the annular convex portion having a volume of 0% is formed, the center hole can be punched without causing distortion of the material in the pressing direction of the piercing punch during punching. Therefore, it is not necessary to separately provide the distortion correcting step of the forming material, and the production efficiency is improved.
【図面の簡単な説明】[Brief description of drawings]
【図1】円盤状フランジ素材を示す断面平面図である。FIG. 1 is a cross-sectional plan view showing a disc-shaped flange material.
【図2】本考案の実施例による予備鍛造素材を示す断面
平面図である。FIG. 2 is a sectional plan view showing a preliminary forging material according to an embodiment of the present invention.
【図3】本考案の実施例による予備鍛造装置を示す部分
断面平面図である。FIG. 3 is a partial sectional plan view showing a preliminary forging device according to an embodiment of the present invention.
【図4】本考案の実施例による打ち抜き成形装置を示す
部分断面平面図である。FIG. 4 is a partial cross-sectional plan view showing a punching molding apparatus according to an embodiment of the present invention.
【図5】本考案の実施例による予備鍛造パンチの要部を
示す部分断面平面図である。FIG. 5 is a partial cross-sectional plan view showing a main part of a pre-forging punch according to an embodiment of the present invention.
【図6】本考案の実施例によるピアスパンチの要部を示
す部分断面平面図である。FIG. 6 is a partial sectional plan view showing a main part of a piercing punch according to an embodiment of the present invention.
【図7】従来の打ち抜き成形工程を示す説明図である。FIG. 7 is an explanatory view showing a conventional punching forming process.
【図8】本考案の実施例による効果測定をした実験結果
を示すグラフで、B(環状凹部の内容積〈mm3〉)/
A(ピアス時の素材歪量〈mm3〉)×100〈%〉と
ピアス時の素材歪〈mm〉の関係を示す。FIG. 8 is a graph showing an experimental result of effect measurement according to an embodiment of the present invention, in which B (internal volume of annular recess <mm 3 >) /
The relation between A (material strain amount during piercing <mm 3 >) × 100 <%> and material strain during piercing <mm> is shown.
1 円盤状フランジ素材 2、6 フランジ部 3、7 ボス部 4 中心孔 5 予備鍛造素材 9 上端面 14 予備鍛造パンチ 14a 環状凹部 24 ピアスパンチ 24a 周状凸部 P 予備鍛造パンチの軸心軸 A ピアス時の素材歪み量 B 環状凹部の内容積量 1 Disc-shaped flange material 2, 6 Flange part 3, 7 Boss part 4 Center hole 5 Pre-forging material 9 Upper end surface 14 Pre-forging punch 14a Annular recess 24 Pierce punch 24a Circular convex part P Pre-forging punch axis A Piercing Amount of material strain at the time B Internal volume of annular recess
Claims (2)
フランジ部と前記ボス部を軸線方向に貫通する中心孔を
備えた円盤状フランジ素材の製造装置において、フラン
ジ部(6)の上端面(9)を形成すべき予備鍛造パンチ
(14)の先端面に環状凹部(14a)が設けられてお
り、該環状凹部(14a)は前記予備鍛造パンチ(1
4)の軸心軸(P)から遠心する緩勾配(α)を有する
と共に、該環状凹部(14a)の内容積(B)は前記中
心孔(4)ピアス時の素材歪み量(A)の約70〜90
%であることを特徴とする円盤状フランジ素材の製造装
置。1. A manufacturing apparatus for a disc-shaped flange blank, comprising a large-diameter flange portion, a small-diameter boss portion, the flange portion, and a central hole penetrating the boss portion in the axial direction. An annular recess (14a) is provided in the tip surface of the pre-forging punch (14) to form the end face (9), and the annular recess (14a) is provided in the pre-forging punch (1).
4) has a gentle gradient (α) centrifugal from the central axis (P), and the inner volume (B) of the annular recess (14a) is equal to the material strain amount (A) at the time of piercing the central hole (4). About 70-90
% Of the disk-shaped flange material manufacturing device.
先端部外周に、鋭角(β)を有する周状凸部(24a)
が設けられていることを特徴とする請求項1記載の円盤
状フランジ素材の製造装置。2. A circumferential projection (24a) having an acute angle (β) on the outer circumference of the tip of the pierce punch (24) of the central hole (4).
The disc-shaped flange material manufacturing apparatus according to claim 1, further comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4707391U JP2505846Y2 (en) | 1991-05-24 | 1991-05-24 | Disk-shaped flange material manufacturing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4707391U JP2505846Y2 (en) | 1991-05-24 | 1991-05-24 | Disk-shaped flange material manufacturing equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04134236U JPH04134236U (en) | 1992-12-14 |
JP2505846Y2 true JP2505846Y2 (en) | 1996-08-07 |
Family
ID=31926373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4707391U Expired - Lifetime JP2505846Y2 (en) | 1991-05-24 | 1991-05-24 | Disk-shaped flange material manufacturing equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2505846Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006326665A (en) * | 2005-05-30 | 2006-12-07 | Nissan Motor Co Ltd | Method and apparatus for straightening warping of flange of forging work piece |
-
1991
- 1991-05-24 JP JP4707391U patent/JP2505846Y2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006326665A (en) * | 2005-05-30 | 2006-12-07 | Nissan Motor Co Ltd | Method and apparatus for straightening warping of flange of forging work piece |
JP4609188B2 (en) * | 2005-05-30 | 2011-01-12 | 日産自動車株式会社 | Method and apparatus for correcting flange warpage of forged workpiece |
Also Published As
Publication number | Publication date |
---|---|
JPH04134236U (en) | 1992-12-14 |
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