JP2000024745A - Thickened pressing method - Google Patents
Thickened pressing methodInfo
- Publication number
- JP2000024745A JP2000024745A JP10193370A JP19337098A JP2000024745A JP 2000024745 A JP2000024745 A JP 2000024745A JP 10193370 A JP10193370 A JP 10193370A JP 19337098 A JP19337098 A JP 19337098A JP 2000024745 A JP2000024745 A JP 2000024745A
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- JP
- Japan
- Prior art keywords
- work
- die
- punch
- thickness
- thickness direction
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は金属等の可塑性材料
からなるワークの端部を増肉する増肉プレス加工方法に
関する。本発明は、特に、ＣＶＴ（無段変速機）のプー
リを製造する場合に供して好適である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for increasing the thickness of an end of a work made of a plastic material such as metal. The present invention is particularly suitable for manufacturing a pulley of a CVT (continuously variable transmission).
【０００２】[0002]
【従来の技術】特開昭６１−１４０３２７号に従来の増
肉プレス加工方法が開示されている。この方法では、ま
ず、一定肉厚で板状に形成された板部と、同じく一定肉
厚で板部から肉厚方向に湾曲し、肉厚方向に一定長で突
出する端部とをもつワークを用意する。そして、このワ
ークをダイス及びパンチで肉厚方向に加圧して端部を増
肉する。この際、ダイスとして、加圧中にワークの板部
における端部とは逆側の裏面と当接可能な第１支持面
と、加圧前にワークの端部における板部とは逆側の外面
との間に間隙を確保し、加圧後にワークの端部の外面と
当接可能な外側規制面とをもつものを採用している。ま
た、パンチとして、押さえパンチ及び据え込みパンチを
採用している。ここで、押さえパンチは、加圧中にワー
クの板部における裏面とは逆側の表面と当接可能な第２
支持面と、この第２支持面と連続しつつ加圧中にワーク
の端部における板部とは逆側の外面と当接可能な内側規
制面とをもつ。また、据え込みパンチはダイスの外側規
制面側が加圧方向に突出するように傾斜した加工面をも
つ。2. Description of the Related Art Japanese Patent Application Laid-Open No. 61-140327 discloses a conventional thickening press working method. In this method, first, a work having a plate portion formed in a plate shape with a constant thickness, and an end portion also having a constant thickness and curved from the plate portion in the thickness direction and projecting at a constant length in the thickness direction. Prepare Then, the work is pressed in the thickness direction with a die and a punch to increase the thickness of the end. At this time, as a die, a first support surface capable of abutting against the back surface opposite to the end of the plate portion of the work during pressing, and a die opposite to the plate portion at the end of the work before pressing. A gap is secured between the outer surface and the outer surface, and the outer surface at the end of the work after pressurization has an outer regulating surface that can contact with the outer surface. Further, as the punch, a holding punch and an upsetting punch are employed. Here, the presser punch is a second punch that can abut on the surface of the plate portion of the work opposite to the back surface during pressing.
It has a supporting surface and an inner regulating surface that is continuous with the second supporting surface and can abut on an outer surface opposite to the plate portion at the end of the work during pressurization. In addition, the upsetting punch has a processing surface that is inclined such that the outer regulating surface side of the die projects in the pressing direction.
【０００３】かかる方法による場合、用意したワークを
そのダイスに載置し、押さえパンチを下降させた後、据
え込みパンチをダイスの外側規制面と押さえパンチの内
側規制面との間に押し込む。この間、ワークは、ダイス
の第１支持面と押さえパンチの第２支持面及び内側規制
面とで挟持される。この際、据え込みパンチの押し込み
長さは、第１支持面から肉厚方向に一定肉厚より長くか
つ一定長より短くする。これにより、ワークの端部は、
据え込みパンチの傾斜した加工面により肉厚方向に加圧
され、捲れ込みや亀裂を生じることなく、押さえパンチ
の内側規制面とダイスの外側規制面との間隔まで増肉さ
れることとなる。In such a method, the prepared work is placed on the die, the holding punch is lowered, and then the upsetting punch is pressed between the outside regulating surface of the die and the inside regulating surface of the holding punch. During this time, the work is held between the first support surface of the die, the second support surface of the presser punch, and the inner regulating surface. At this time, the pushing length of the upsetting punch is longer than a certain thickness and shorter than a certain length in the thickness direction from the first support surface. As a result, the end of the work
Pressing is performed in the thickness direction by the inclined processing surface of the upsetting punch, and the thickness is increased to the distance between the inner regulating surface of the presser punch and the outer regulating surface of the die without causing entanglement or cracking.
【０００４】また、特開平６−２１８４４２号にも従来
の増肉プレス加工方法が開示されている。この方法で
は、まず、一定肉厚で板状に形成された板部と、同じく
一定肉厚で板部から肉厚方向に湾曲し、肉厚方向に一定
長で突出するとともに、端面が内向きに傾斜して形成さ
れた端部とをもつワークを用意する。そして、上記公報
記載のダイス、押さえパンチ及び据え込みパンチと同様
のダイス、押さえパンチ及び据え込みパンチを用い、ワ
ークを肉厚方向に加圧して端部を増肉する。但し、据え
込みパンチの加工面は、ダイスの第１支持面と平行に形
成されている。[0004] Japanese Patent Application Laid-Open No. 6-218442 also discloses a conventional thickening press working method. In this method, first, a plate portion formed in a plate shape with a constant thickness, a curved portion is also curved from the plate portion with a constant thickness, protrudes at a constant length in the thickness direction, and the end face faces inward. A work having an inclined end is prepared. Then, the work is pressed in the thickness direction to increase the thickness of the end using the same dies, holding punches and upsetting punches as the dies, holding punches and upsetting punches described in the above publication. However, the processing surface of the upsetting punch is formed parallel to the first support surface of the die.
【０００５】かかる方法による場合、ワークの端部は、
その端面が内向きに傾斜して形成されているため、据え
込みパンチの加工面により肉厚方向に加圧され、やはり
捲れ込みや亀裂を生じることなく、押さえパンチの内側
規制面とダイスの外側規制面との間隔まで増肉されるこ
ととなる。さらに、刊行物「自動車技術（Ｖｏｌ．５
０、Ｎｏ．１２、１９９６）」には、主要部が四分割さ
れた金型により増肉プレス加工方法を行うことが開示さ
れている。In such a method, the end of the work is
Since the end face is formed to be inclined inward, it is pressed in the thickness direction by the processing surface of the upsetting punch, and again the inner regulating surface of the presser punch and the outer side of the die do not generate entangling or cracking. The thickness will be increased to the distance from the regulation surface. Furthermore, the publication “Automotive Technology (Vol.5)
0, No. 12, 1996) ”discloses that a thickening press working method is performed using a mold whose main part is divided into four parts.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記従来の増
肉プレス加工方法では、いずれも製品コストの高騰化を
招来してしまう。すなわち、特開昭６１−１４０３２７
号公報記載の方法では、据え込みパンチの加工面が傾斜
しているため、増肉した端部の端面が傾斜してしまう。
このため、かかる方法後のワークからＣＶＴのプーリ等
の製品を完成させるためには、その端部を後工程で十分
に切削等して修正する必要を生じ、工程数の増加を来し
てしまう。また、この方法では、ダイス、押さえパンチ
及び据え込みパンチを用いる必要があるため、金型の構
成部品が多く、設備コストも高くなる。However, any of the above-mentioned conventional thickening press working methods results in an increase in product cost. That is, Japanese Patent Application Laid-Open No. 61-140327
According to the method described in Japanese Patent Application Laid-Open No. H11-139, the machined surface of the upsetting punch is inclined, so that the end face of the thickened end is inclined.
For this reason, in order to complete a product such as a CVT pulley from a workpiece after such a method, it is necessary to modify the end by sufficiently cutting or the like in a subsequent process, thereby increasing the number of processes. . Further, in this method, it is necessary to use a die, a holding punch, and an upsetting punch, so that the number of components of the mold is large and the equipment cost is high.
【０００７】また、特開平６−２１８４４２号公報記載
の方法では、端面が傾斜した端部のワークを用いなけれ
ばならないため、その端部を加工する前工程が必要であ
り、やはり工程数の増加を来してしまう。また、この方
法においても、ダイス、押さえパンチ及び据え込みパン
チを用いる必要があるため、金型の構成部品が多く、設
備コストも高くなる。Further, in the method described in Japanese Patent Application Laid-Open No. 6-218442, it is necessary to use a work having an end having a slanted end face, so that a pre-process for processing the end is required, which also increases the number of steps. Will come. Also in this method, since it is necessary to use a die, a holding punch, and an upsetting punch, the number of components of the mold is large, and the equipment cost is also high.
【０００８】さらに、上記刊行物記載の方法において
も、主要部が四分割された金型を用いなければならない
ため、やはり金型の構成部品が多く、設備コストも高く
なる。本発明は、上記従来の実状に鑑みてなされたもの
であって、捲れ込みや亀裂を生じることなく、かつ製品
コストの低廉化を実現しつつ、ワークの端部を増肉させ
ることのできる増肉プレス加工方法を提供することを解
決すべき課題としている。Further, in the method described in the above-mentioned publication, a mold whose main part is divided into four parts must be used, so that there are still many components of the mold and the equipment cost is high. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional situation, and has an increased thickness capable of increasing the thickness of an end portion of a workpiece without causing entanglement or cracks and realizing a low product cost. The issue to be solved is to provide a meat press working method.
【０００９】[0009]
【課題を解決するための手段】本発明の増肉プレス加工
方法は、一定肉厚で板状に形成された板部と、該一定肉
厚で該板部から肉厚方向に湾曲し、該肉厚方向に一定長
で突出する端部とをもつワークを用意し、該ワークをダ
イス及びパンチで該肉厚方向に加圧して該端部を増肉す
る増肉プレス加工方法において、前記ダイスとして、加
圧中に前記板部における前記端部とは逆側の裏面と当接
可能な第１支持面と、加圧前に該端部における該板部と
は逆側の外面との間に間隙を確保し、加圧後に該端部の
該外面と当接可能な規制面とをもつものを採用し、前記
パンチとして、加圧中に該板部における該裏面とは逆側
の表面と当接可能な第２支持面と、該第２支持面と連続
しつつ前記肉厚方向に傾斜又は湾曲して形成され、加圧
中に該端部の内縁を該規制面側に押圧可能な押圧面と、
該押圧面と連続しつつ該第１支持面と平行であって該第
１支持面から該肉厚方向に前記一定肉厚より深くかつ前
記一定長より浅く形成され、加圧後に該端部の該外面を
該規制面に当接させる加工面とをもつものを採用するこ
とを特徴とする。SUMMARY OF THE INVENTION According to the present invention, there is provided a method for increasing the thickness of a plate, comprising: a plate portion formed in a plate shape having a constant thickness; A method for increasing the thickness of the work by preparing a work having an end protruding at a constant length in the thickness direction, and pressing the work in the thickness direction with a die and a punch to increase the thickness of the end. Between the first support surface which can be in contact with the back surface of the plate portion opposite to the end portion during pressurization, and the outer surface of the end portion opposite to the plate portion at the end portion before pressurization The punch has a regulating surface that can contact the outer surface of the end portion after pressing, and the punch has a surface opposite to the back surface of the plate portion during pressing as the punch. A second support surface that can contact with the second support surface, and that is formed to be inclined or curved in the thickness direction while being continuous with the second support surface, and that the inner edge of the end portion be pressurized. And capable of pressing the pressing surface to the regulation side,
It is formed parallel to the first support surface while being continuous with the pressing surface, and is formed from the first support surface in the thickness direction to be deeper than the certain thickness and shallower than the certain length. It is characterized by adopting one having a processing surface for bringing the outer surface into contact with the regulating surface.
【００１０】本発明の方法では、用意したワークをダイ
ス及びパンチで肉厚方向に加圧する。この加圧前、ワー
クは端部における板部とは逆側の外面がダイスの規制面
との間に間隙を確保している。そして、加圧中、ワーク
は、パンチの押圧面が肉厚方向に傾斜又は湾曲して形成
されているため、端部の内縁がダイスの規制面側に押圧
されることとなる。この間、ワークは、板部における端
部とは逆側の裏面がダイスの第１支持面と当接し、板部
における裏面とは逆側の表面がパンチの第２支持面と当
接し、ワークが挟持されることとなる。In the method of the present invention, the prepared work is pressed in the thickness direction with a die and a punch. Before this pressurization, the outer surface of the work opposite to the plate at the end secures a gap between the work and the regulating surface of the die. Then, during pressurization, since the pressing surface of the punch is formed so that the pressing surface of the punch is inclined or curved in the thickness direction, the inner edge of the end is pressed toward the regulating surface side of the die. During this time, the work has a back surface opposite to the end of the plate portion in contact with the first support surface of the die, and a surface of the plate portion opposite to the back surface in contact with the second support surface of the punch. It will be pinched.
【００１１】さらに加圧されれば、ワークの端部は、ダ
イスの第１支持面と平行なパンチの加工面がダイスの第
１支持面から肉厚方向に一定肉厚より深くかつ一定長よ
り浅く形成されているため、外面がダイスの規制面に当
接するまで肉厚方向に加圧される。こうして、ワークは
端部の内縁がダイスの規制面側に押圧された状態で端部
が押し潰されるため、捲れ込みや亀裂を生じることな
く、加工面の間隔まで増肉されることとなる。When the workpiece is further pressurized, the end of the work is formed such that the processing surface of the punch, which is parallel to the first support surface of the die, is deeper than a certain thickness in the thickness direction from the first support surface of the die, and more than a certain length. Since it is formed shallow, it is pressed in the thickness direction until the outer surface comes into contact with the regulating surface of the die. In this way, since the end of the work is crushed while the inner edge of the end is pressed against the regulating surface of the die, the thickness of the work is increased up to the interval between the processing surfaces without causing entanglement or cracking.
【００１２】こうして、この方法によれば、パンチの加
工面がダイスの第１支持面と平行であることから、増肉
した端部の端面は第１支持面と平行に形成される。この
ため、こうして得られたワークからＣＶＴのプーリ等の
製品を完成させる場合にも、その端部を後工程で切削等
により修正する必要がほとんどない。また、端面が傾斜
した端部のワークを用いる必要もないため、その端部を
加工する前工程も不要である。このため、この方法で
は、従来に比して工程数の削減を実現することができ
る。In this way, according to this method, since the processing surface of the punch is parallel to the first support surface of the die, the end surface of the thickened end is formed parallel to the first support surface. For this reason, even when a product such as a pulley of a CVT is completed from the work thus obtained, it is almost unnecessary to modify the end portion by cutting or the like in a later process. In addition, since it is not necessary to use a work having an end portion having an inclined end surface, a pre-process for processing the end portion is unnecessary. Therefore, in this method, the number of steps can be reduced as compared with the conventional method.
【００１３】また、この方法では、増肉のためにダイス
及びパンチを用いているに過ぎず、金型の構成部品が少
なく、設備コストが低い。したがって、この方法によれ
ば、捲れ込みや亀裂を生じることなく、かつ製品コスト
の低廉化を実現しつつ、ワークの端部を増肉させること
ができる。Further, in this method, only dies and punches are used to increase the wall thickness, the number of components of the mold is small, and the equipment cost is low. Therefore, according to this method, it is possible to increase the thickness of the end portion of the work without causing entanglement or cracks and realizing a low product cost.
【００１４】[0014]
【発明の実施の形態】以下、本発明を具体化した実施形
態１、２を図面を参照しつつ説明する。 （実施形態１） 「前工程」実施形態１の増肉プレス加工方法では、ま
ず、図５（Ａ）に示すように、一定肉厚ｔで板状に形成
されたワークｗを用意する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments 1 and 2 embodying the present invention will be described below with reference to the drawings. (Embodiment 1) "Pre-process" In the thickening press working method of Embodiment 1, first, as shown in FIG. 5A, a work w formed into a plate with a constant thickness t is prepared.
【００１５】また、図１及び図２に示すように、ダイス
１及びパンチ２を有する予備成形用金型３を用意する。
この予備成形用金型３では、ダイス１にキャビティＣ１
が形成されており、キャビティＣ１にパンチ２が押し込
まれることにより、ワークｗは、図５（Ｂ）に示すよう
に、一定肉厚ｔで板状に形成された板部ｗ１と、一定肉
厚ｔで板部ｗ１から肉厚方向に湾曲し、肉厚方向に一定
長ｌで突出する端部ｗ２とをもつように成形される。 「本工程」そして、図３及び図４に示すように、ダイス
４及びパンチ５を有する増肉用金型６を用意する。この
本成型用金型６では、ダイス４にキャビティＣ２が形成
されている。図中、キャビティＣ２の底面が第１支持面
４ａであり、キャビティＣ２の側面が規制面４ｂであ
る。キャビティＣ２に押し込まれるパンチ５は、ダイス
４の第１支持面４ａと対面する第２支持面５ａを有し、
この第２支持面５ａには肉厚方向に湾曲した押圧面５ｂ
が連続して形成され、この押圧面５ｂにはダイス４の第
１支持面４ａと平行に加工面５ｃが連続して形成されて
いる。加工面５ｃは、第１支持面４ａから肉厚方向にワ
ークｗの一定肉厚ｔより深くかつ一定長ｌより浅く形成
されている。なお、増肉用金型６のダイス４として、上
記予備成形用金型３のダイス１を用いることもできる。As shown in FIGS. 1 and 2, a preforming die 3 having a die 1 and a punch 2 is prepared.
In the preforming mold 3, the cavity 1 is formed in the die 1.
When the punch 2 is pushed into the cavity C1, the work w is formed with a plate portion w1 formed in a plate shape with a constant thickness t, as shown in FIG. It is formed so as to be curved in the thickness direction from the plate portion w1 at t, and to have an end w2 protruding at a constant length 1 in the thickness direction. “This Step” Then, as shown in FIGS. 3 and 4, a mold 6 for thickening having a die 4 and a punch 5 is prepared. In the main mold 6, a cavity C <b> 2 is formed in the die 4. In the figure, the bottom surface of the cavity C2 is the first support surface 4a, and the side surface of the cavity C2 is the regulating surface 4b. The punch 5 pushed into the cavity C2 has a second support surface 5a facing the first support surface 4a of the die 4,
The second support surface 5a has a pressing surface 5b curved in the thickness direction.
Are continuously formed, and a processing surface 5c is continuously formed on the pressing surface 5b in parallel with the first support surface 4a of the die 4. The processing surface 5c is formed to be deeper than the constant thickness t of the work w and shallower than the constant length l in the thickness direction from the first support surface 4a. In addition, as the die 4 of the mold 6 for increasing the thickness, the die 1 of the mold 3 for preforming can also be used.
【００１６】そして、前工程で用意したワークｗをその
ダイス４のキャビティＣ２に収納し、パンチ５を押し込
み、ワークｗをダイス４及びパンチ５で肉厚方向に加圧
する。図３に示すように、この加圧前、ワークｗは端部
ｗ２における板部ｗ１とは逆側の外面ｗ３がダイス４の
規制面４ｂとの間に間隙を確保している。加圧中、ワー
クｗは、パンチ５の押圧面５ｂが肉厚方向に湾曲して形
成されているため、端部ｗ２の内縁ｗ４がダイス４の規
制面４ｂ側に押圧されることとなる。この間、ワークｗ
は、板部ｗ１における端部ｗ２とは逆側の裏面がダイス
４の第１支持面４ａと当接し、板部ｗ１における裏面と
は逆側の表面がパンチ５の第２支持面５ａと当接し、ワ
ークｗが挟持されることとなる。Then, the work w prepared in the previous step is stored in the cavity C2 of the die 4, the punch 5 is pushed in, and the work w is pressed by the die 4 and the punch 5 in the thickness direction. As shown in FIG. 3, before the pressing, the work w has a gap between the outer surface w3 of the end w2 opposite to the plate portion w1 and the regulating surface 4b of the die 4. During pressing, the pressing surface 5b of the punch 5 is curved in the thickness direction, so that the inner edge w4 of the end w2 is pressed against the regulating surface 4b of the die 4. During this time, work w
The back surface of the plate portion w1 opposite to the end w2 abuts on the first support surface 4a of the die 4, and the back surface of the plate portion w1 opposite to the back surface abuts on the second support surface 5a of the punch 5. Then, the work w is held.
【００１７】図４に示すように、さらに加圧されれば、
ワークｗの端部ｗ２は、ダイス４の第１支持面４ａと平
行なパンチ５の加工面５ｃがダイス４の第１支持面４ａ
から肉厚方向に一定肉厚ｔより深くかつ一定長ｌより浅
く形成されているため、外面ｗ３がダイス４の規制面４
ｂに当接するまで肉厚方向に加圧される。こうして、ワ
ークｗは端部ｗ２の内縁ｗ４がダイス４の規制面４ｂ側
に押圧された状態で端部ｗ２が押し潰されるため、捲れ
込みや亀裂を生じることなく、加工面５ｃの間隔まで増
肉されることとなる。この際、加工面５ｃの間隔を一定
肉厚ｔより十分に広くすることができるため、充分な増
肉が可能であり、これにより製品に充分な強度を付与す
ることも可能である。As shown in FIG. 4, if the pressure is further increased,
The end w2 of the workpiece w is such that the processing surface 5c of the punch 5 parallel to the first support surface 4a of the die 4 is the first support surface 4a of the die 4.
The outer surface w3 is formed so as to be deeper than the constant thickness t and shallower than the constant length l in the thickness direction.
Pressure is applied in the thickness direction until it comes into contact with b. Thus, the end w2 of the work w is crushed in a state where the inner edge w4 of the end w2 is pressed against the regulating surface 4b of the die 4, so that the work w is increased up to the interval between the processing surfaces 5c without causing the winding or the crack. Will be fleshed out. At this time, since the interval between the processing surfaces 5c can be made sufficiently wider than the constant thickness t, it is possible to sufficiently increase the wall thickness, and it is also possible to impart sufficient strength to the product.
【００１８】こうして、この方法によれば、パンチ５の
加工面５ｃがダイス４の第１支持面４ａと平行であるこ
とから、図５（Ｃ）に示すように、増肉した端部ｗ２の
端面ｗ５は第１支持面４ａと平行に形成される。このた
め、こうして得られたワークｗからＣＶＴのプーリを完
成させる場合にも、その端部ｗ２を後工程で切削等によ
り修正する必要がほとんどない。また、ワークｗの増肉
された端部ｗ２は板部ｗ１に対してほぼ直角をなして形
成されるため、この意味でもその端部ｗ２を後工程で切
削等により修正する必要がほとんどない。さらに、上記
公報のように端面が傾斜した端部のワークを用いる必要
もないため、その端部ｗ２を加工する前工程も不要であ
る。このため、この方法では、従来に比して工程数の削
減を実現することができる。Thus, according to this method, since the processing surface 5c of the punch 5 is parallel to the first support surface 4a of the die 4, as shown in FIG. The end face w5 is formed parallel to the first support surface 4a. Therefore, even when the pulley of the CVT is completed from the work w thus obtained, it is almost unnecessary to correct the end w2 by cutting or the like in a later process. Further, since the thickened end w2 of the work w is formed substantially at right angles to the plate portion w1, in this sense, it is almost unnecessary to modify the end w2 by cutting or the like in a later process. Further, since there is no need to use a work having an end portion having an inclined end surface as in the above publication, a pre-process for processing the end portion w2 is also unnecessary. Therefore, in this method, the number of steps can be reduced as compared with the conventional method.
【００１９】また、この方法では、増肉のための増肉用
金型６がダイス４及びパンチ５を有するに過ぎないた
め、増肉用金型６の構成部品が少なく、設備コストが低
い。また、増肉用金型６が簡易な構造であるため、加工
スピードを早くすることもできる。したがって、この方
法によれば、捲れ込みや亀裂を生じることなく、かつＣ
ＶＴのプーリのコストの低廉化を実現しつつ、ワークｗ
の端部ｗ２を増肉させることができる。 （実施形態２）実施形態１の増肉プレス加工方法では、
図６及び図７に示すように、ダイス７及びパンチ８を有
する増肉用金型９を用意する。この本成型用金型９で
は、パンチ８において、第２支持面５ａに肉厚方向に傾
斜した押圧面８ｂが連続して形成されている。他の構成
は実施形態１と同一であるため、同一の構成については
同一の符号を付して詳細な説明を省略する。Further, in this method, since the mold 6 for increasing the thickness only has the die 4 and the punch 5, the number of components of the mold 6 for increasing the thickness is small and the equipment cost is low. Further, since the thickness increasing mold 6 has a simple structure, the processing speed can be increased. Therefore, according to this method, no entanglement or cracking occurs and C
While realizing the lower cost of the VT pulley,
End w2 can be increased. (Embodiment 2) In the thickening press working method of Embodiment 1,
As shown in FIG. 6 and FIG. 7, a mold 9 for increasing the thickness having a die 7 and a punch 8 is prepared. In the main molding die 9, in the punch 8, a pressing surface 8b inclined in the thickness direction is continuously formed on the second support surface 5a. The other configuration is the same as that of the first embodiment, and therefore, the same configuration is denoted by the same reference numeral and detailed description is omitted.
【００２０】そして、実施形態１と同様、ワークｗをダ
イス７及びパンチ８で肉厚方向に加圧する。加圧中、ワ
ークｗは、パンチ８の押圧面８ｂが肉厚方向に傾斜して
形成されているため、端部ｗ２の内縁ｗ４がダイス７の
規制面４ｂ側に押圧されることとなる。他の作用は実施
形態１と同様である。Then, similarly to the first embodiment, the work w is pressed by the die 7 and the punch 8 in the thickness direction. During pressing, the pressing surface 8b of the punch 8 is formed so as to be inclined in the thickness direction, so that the inner edge w4 of the end w2 is pressed against the regulating surface 4b of the die 7. Other operations are the same as those of the first embodiment.
【００２１】したがって、実施形態２の方法によって
も、実施形態１と同様の効果を奏することができる。な
お、本発明の増肉プレス加工方法は、ワークの周縁に端
部が存在する場合ばかりでなく、ワークの中央等にバー
リング加工等を施し、これにより形成された開口の周縁
に端部が存在する場合にも適用可能である。Therefore, the same effect as that of the first embodiment can be obtained by the method of the second embodiment. The method for increasing the thickness of the work according to the present invention is not limited to the case where the edge is present at the periphery of the work, but the burring or the like is performed at the center of the work and the like, and the end is present at the periphery of the opening formed thereby. It is also applicable to the case.
【図１】実施形態１、２の前工程前における予備成形用
金型等の一部断面図である。FIG. 1 is a partial cross-sectional view of a preforming mold and the like before a pre-process of Embodiments 1 and 2.
【図２】実施形態１、２の前工程中における予備成形用
金型等の一部断面図である。FIG. 2 is a partial cross-sectional view of a preforming mold and the like during a pre-process of Embodiments 1 and 2.
【図３】実施形態１の本工程前における増肉用金型等の
一部断面図である。FIG. 3 is a partial cross-sectional view of a mold for increasing thickness and the like before a main step according to a first embodiment.
【図４】実施形態１の本工程中における増肉用金型等の
一部断面図である。FIG. 4 is a partial cross-sectional view of a mold for increasing thickness and the like during a main process according to the first embodiment.
【図５】実施形態１に係り、図（Ａ）は前工程前のワー
クの一部断面図、図（Ｂ）は前工程後及び本工程前のワ
ークの一部断面図、図（Ｃ）は本工程後のワークの一部
断面図である。FIG. 5A is a partial cross-sectional view of the work before the pre-process, FIG. 5B is a partial cross-sectional view of the work after the pre-process and before the main process, and FIG. FIG. 3 is a partial cross-sectional view of the work after this step.
【図６】実施形態２の本工程前における増肉用金型等の
一部断面図である。FIG. 6 is a partial cross-sectional view of a mold for increasing thickness and the like before a main step according to a second embodiment.
【図７】実施形態２の本工程中における増肉用金型等の
一部断面図である。FIG. 7 is a partial cross-sectional view of a mold for increasing thickness and the like during a main step according to a second embodiment.
ｗ…ワーク ｔ…一定肉厚 ｗ１…板部 ｗ２…端部 ｗ３…外面 ｗ４…内縁 ４、７…ダイス ４ａ…第１支持面 ４ｂ…規制面 ５、８…パンチ ５ａ…第２支持面 ５ｂ、８ｂ…押圧面 ５ｃ…加工面 w ... Work t ... Constant thickness w1 ... Plate w2 ... End w3 ... Outer surface w4 ... Inner edge 4,7 ... Die 4a ... First support surface 4b ... Regulatory surface 5,8 ... Punch 5a ... Second support surface 5b 8b: pressed surface 5c: processed surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩村 憲親 富山県富山市不二越本町一丁目１番１号 株式会社不二越内 Ｆターム(参考） 4E087 AA05 AA10 BA19 CA12 CA33 CC01 CC05 EC11 EC12 EC22 EC37 EC46 HA17 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Norichika Iwamura 1-1-1, Fujikoshi Honcho, Toyama-shi, Toyama F-term (reference) 4E087 AA05 AA10 BA19 CA12 CA33 CC01 CC05 EC11 EC12 EC22 EC37 EC46 HA17
Claims (1)
定肉厚で該板部から肉厚方向に湾曲し、該肉厚方向に一
定長で突出する端部とをもつワークを用意し、該ワーク
をダイス及びパンチで該肉厚方向に加圧して該端部を増
肉する増肉プレス加工方法において、 前記ダイスとして、加圧中に前記板部における前記端部
とは逆側の裏面と当接可能な第１支持面と、加圧前に該
端部における該板部とは逆側の外面との間に間隙を確保
し、加圧後に該端部の該外面と当接可能な規制面とをも
つものを採用し、 前記パンチとして、加圧中に該板部における該裏面とは
逆側の表面と当接可能な第２支持面と、該第２支持面と
連続しつつ前記肉厚方向に傾斜又は湾曲して形成され、
加圧中に該端部の内縁を該規制面側に押圧可能な押圧面
と、該押圧面と連続しつつ該第１支持面と平行であって
該第１支持面から該肉厚方向に前記一定肉厚より深くか
つ前記一定長より浅く形成され、加圧後に該端部の該外
面を該規制面に当接させる加工面とをもつものを採用す
ることを特徴とする増肉プレス加工方法。1. A plate portion having a constant thickness and formed in a plate shape, and an end portion which is curved from the plate portion at a constant thickness in a thickness direction and protrudes at a constant length in the thickness direction. A work is prepared, and the work is pressurized in the thickness direction with a die and a punch to increase the thickness of the end portion. Secures a gap between the first support surface that can be brought into contact with the opposite back surface, and the outer surface of the end portion opposite to the plate portion at the end before pressurizing, and the pressurizing of the end portion after pressurization. A second support surface capable of abutting on a surface of the plate portion opposite to the back surface during pressurization, and a second support surface having a regulating surface capable of contacting the outer surface; It is formed to be inclined or curved in the thickness direction while being continuous with the support surface,
A pressing surface capable of pressing the inner edge of the end portion to the regulating surface side during pressing, and being continuous with the pressing surface, being parallel to the first support surface, and extending from the first support surface in the thickness direction. Characterized in that it is formed to be deeper than the predetermined thickness and shallower than the predetermined length, and to have a processing surface for bringing the outer surface of the end portion into contact with the regulation surface after pressing. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10193370A JP2000024745A (en) | 1998-07-08 | 1998-07-08 | Thickened pressing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10193370A JP2000024745A (en) | 1998-07-08 | 1998-07-08 | Thickened pressing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000024745A true JP2000024745A (en) | 2000-01-25 |
Family
ID=16306792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10193370A Withdrawn JP2000024745A (en) | 1998-07-08 | 1998-07-08 | Thickened pressing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000024745A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009172643A (en) * | 2008-01-25 | 2009-08-06 | Canon Inc | Method for manufacturing metallic member with multiple projections |
| WO2015079846A1 (en) * | 2013-11-29 | 2015-06-04 | 新日鐵住金株式会社 | Method for forming closed-bottom cylindrical container |
| US20150239029A1 (en) * | 2012-10-23 | 2015-08-27 | Nippon Steel & Sumitomo Metal Corporation | Press-work method and bottomed container |
| JP2019214068A (en) * | 2018-06-13 | 2019-12-19 | フタバ産業株式会社 | Method of manufacturing bent member |
| CN114273592A (en) * | 2021-12-23 | 2022-04-05 | 湘潭大学 | Method and mould for locally thickening and forming side walls of cylindrical parts with different thicknesses |
-
1998
- 1998-07-08 JP JP10193370A patent/JP2000024745A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009172643A (en) * | 2008-01-25 | 2009-08-06 | Canon Inc | Method for manufacturing metallic member with multiple projections |
| US8250762B2 (en) | 2008-01-25 | 2012-08-28 | Canon Kabushiki Kaisha | Method of manufacturing metal member with plurality of projections |
| US20150239029A1 (en) * | 2012-10-23 | 2015-08-27 | Nippon Steel & Sumitomo Metal Corporation | Press-work method and bottomed container |
| US9421597B2 (en) * | 2012-10-23 | 2016-08-23 | Nippon Steel & Sumitomo Metal Corporation | Press-work method and bottomed container |
| WO2015079846A1 (en) * | 2013-11-29 | 2015-06-04 | 新日鐵住金株式会社 | Method for forming closed-bottom cylindrical container |
| JP6024833B2 (en) * | 2013-11-29 | 2016-11-16 | 新日鐵住金株式会社 | Forming method of cylindrical container with bottom |
| CN105682823B (en) * | 2013-11-29 | 2017-08-29 | 新日铁住金株式会社 | Manufacturing process with round-ended cylinder container |
| KR101787925B1 (en) * | 2013-11-29 | 2017-10-18 | 신닛테츠스미킨 카부시키카이샤 | Method for forming closed-bottom cylindrical container |
| JP2019214068A (en) * | 2018-06-13 | 2019-12-19 | フタバ産業株式会社 | Method of manufacturing bent member |
| CN114273592A (en) * | 2021-12-23 | 2022-04-05 | 湘潭大学 | Method and mould for locally thickening and forming side walls of cylindrical parts with different thicknesses |
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