JPH0659510B2 - Thin plate work drawing die device - Google Patents
Thin plate work drawing die deviceInfo
- Publication number
- JPH0659510B2 JPH0659510B2 JP61255387A JP25538786A JPH0659510B2 JP H0659510 B2 JPH0659510 B2 JP H0659510B2 JP 61255387 A JP61255387 A JP 61255387A JP 25538786 A JP25538786 A JP 25538786A JP H0659510 B2 JPH0659510 B2 JP H0659510B2
- Authority
- JP
- Japan
- Prior art keywords
- movable
- punch
- work
- mountain portion
- mountain
- 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 - Fee Related
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】 Ａ．発明の目的 (1) 産業上の利用分野 本発明は、薄板状ワークを絞り成形して、中央部の平坦
部と、平坦部の外方に位置して上方に***した第１山部
と、第１山部よりも***量を小さくして第１山部の外方
で上方に***するとともに平坦部とほぼ同一レベルにあ
る第２山部とを形成するための薄板状ワークの絞り金型
装置に関する。Detailed Description of the Invention A. Object of the Invention (1) Field of Industrial Use The present invention is a thin plate-shaped work formed by drawing, and a flat portion in a central portion, and a first mountain portion located outside the flat portion and protruding upward, A die for drawing a thin plate-like work for forming a second mountain portion which is smaller than the first mountain portion and protrudes upward outside the first mountain portion and which is at substantially the same level as the flat portion. Regarding the device.
(2) 従来の技術 従来、かかる装置では、ワークの外縁を保持した後、平
坦部、第１山部および第２山部を一度に成形するか、あ
るいは第１山部を絞り成形した後に平坦部および第２山
部を成形するのが一般的である。(2) Conventional technology Conventionally, in such a device, after holding the outer edge of the work, the flat portion, the first mountain portion and the second mountain portion are formed at one time, or the first mountain portion is drawn and then flattened. It is common to form the second portion and the second peak portion.
(3) 発明が解決しようとする問題点 ところが、上記従来のものでは、第１山部の絞り成形途
中で金型に面当りしない引張り部でワークに絞りしわが
発生し、成形完了時にもこのしわを除去できず、商品性
を失うことがある。特にこの傾向は、アルミニウム板な
どの比較的軟質の材料から成るワークの絞り成形時に多
く見られるものであり、仮にしわを潰し得たとしても、
しわの形状が残存してしまう。(3) Problems to be Solved by the Invention However, in the above-mentioned conventional one, the drawing wrinkles are generated in the work in the pulling part that does not come into contact with the mold during the draw forming of the first crest part, and even when the forming is completed Wrinkles may not be removed, which may lead to loss of marketability. In particular, this tendency is often seen when drawing a work made of a relatively soft material such as an aluminum plate, and even if the wrinkles can be crushed temporarily,
Wrinkle shape remains.
本発明は、かかる事情に鑑みてなされたものであり、し
わの発生を防止するようにした薄板状ワークの絞り金型
装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drawing die device for a thin plate-like work, which prevents wrinkles from occurring.
Ｂ．発明の構成 (1) 問題点を解決するための手段 本発明は、平坦部、第１山部および第２山部の上面に対
応した形状の成形面とその成形面の外縁に連なるホルダ
面とを下面に有して昇降可能な上型と；成形面と協働し
て第１山部を成形すべく上型の下方に固定配置される固
定パンチと；成形面と協働して平坦部を形成すべく固定
パンチの内方で上下移動可能に配置されるとともに自然
な状態では固定パンチよりも上方に突出すべく上方に向
けて弾発付勢された第１可動パンチと；成形面と協働し
て第２山部を形成すべく固定パンチの外方で上下移動可
能に配置されるとともに自然な状態では自然な状態にあ
る第１可動パンチとほぼ同一レベルとすべく上方に向け
て弾発付勢された第２可動パンチと；ホルダ面と協働し
てワークの外縁を挟圧保持すべく第２可動パンチの外方
で上下移動可能に配置されるとともに自然な状態では自
然な状態にある第１および第２可動パンチよりも上方に
突出すべく上方に向けて弾発付勢されたブランクホルダ
と；を備える。B. Configuration of the Invention (1) Means for Solving Problems The present invention provides a molding surface having a shape corresponding to the upper surfaces of the flat portion, the first crest portion and the second crest portion, and a holder surface connected to the outer edge of the molding surface. An upper die having a lower surface and capable of moving up and down; a fixed punch fixedly arranged below the upper die to cooperate with the molding surface to mold the first mountain portion; and a flat portion in cooperation with the molding surface. A first movable punch elastically biased upward so as to project above the fixed punch in a natural state; and a forming surface; It is arranged so as to be movable up and down outside the fixed punch to cooperate with each other to form the second mountain portion, and in the natural state, it is directed upward so as to be at substantially the same level as the first movable punch which is in the natural state. A second movable punch that is elastically urged; cooperates with the holder surface to hold the outer edge of the work under pressure The second movable punch is arranged so as to be movable up and down outside the second movable punch, and is naturally elastically urged upward so as to project above the first and second movable punches which are in a natural state in a natural state. And a blank holder.
(2) 作 用 ブランクホルダ上にワークの外縁を載せて上型を降下す
ると、先ずワークの外縁がホルダ面およびブランクホル
ダ間で挟持され、さらに上型が降下することにより、第
１および第２可動パンチと上型の成形面とで、ほぼ同一
レベルの平坦部および第２山部が成形され、上型のさら
なる降下により固定パンチと成形面とで第１山部が成形
される。したがって金型に接触しない引張り部がワーク
に生じることはなく、しわの発生も防止される。(2) Work When the outer edge of the work is placed on the blank holder and the upper die is lowered, the outer edge of the work is first clamped between the holder surface and the blank holder, and the upper die is lowered, so that the first and second The movable punch and the molding surface of the upper die form the flat portion and the second mountain portion at substantially the same level, and the further lowering of the upper die forms the first mountain portion by the fixed punch and the molding surface. Therefore, a pulling part that does not come into contact with the mold does not occur in the work and wrinkles are prevented from occurring.
(3) 実施例 以下、図面により本発明の一実施例について説明する
と、先ず第１図において、この絞り金型装置は、上型１
および下型２を備えるものであり、予めブランキング加
工された金属製薄板状ワーク３が、下型２および上型１
の協働作用により絞り成形される。(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, in FIG.
And the lower die 2, and the metal thin plate-like work 3 which is blanked in advance is the lower die 2 and the upper die 1.
Is formed by the cooperation of
すなわち第２図において、ワーク３は、中央部の平坦部
４と、その平坦部４を囲むようにして外方に位置する第
１山部５と、第１山部５の外方に位置する第２山部６と
を有するように絞り成形されるものであり、第１山部５
は***量を比較的大にして平坦部４の外縁から上方に隆
起し、第２山部６は***量を第１山部５よりも小さくし
て平坦部４とほぼ同一レベルとなるべく第１山部５の外
縁で上方に***する。しかも第２山部６の外方すなわち
ワーク３の外縁には、絞り成形完了後に切除されるべき
ブランク部７が設けられている。That is, in FIG. 2, the work 3 includes a flat portion 4 at the central portion, a first mountain portion 5 located outside the flat portion 4 so as to surround the flat portion 4, and a second mountain portion located outside the first mountain portion 5. The first mountain portion 5 is formed by drawing to have the mountain portion 6.
Has a relatively large amount of protrusion and protrudes upward from the outer edge of the flat portion 4, and the second mountain portion 6 has a smaller amount of protrusion than that of the first mountain portion 5 so that the second mountain portion 6 has substantially the same level as the flat portion 4. It rises upward at the outer edge of the mountain portion 5. Moreover, on the outer side of the second mountain portion 6, that is, on the outer edge of the work 3, there is provided a blank portion 7 to be cut off after completion of the drawing.
上型１は、図示しない昇降駆動手段により昇降駆動され
るものであり、その下面には、ワーク３の絞り加工後の
平坦部４、第１山部５および第２山部６の上面に対応し
た形状の成形面８と、ワーク３のブランク部７に対応し
て成形面８の外縁に連設されるホルダ面とが形成され
る。しかも成形面８およびホルダ面９には合成樹脂コー
ティングが施される。The upper die 1 is driven up and down by a lifting drive means (not shown), and its lower surface corresponds to the upper surfaces of the flat portion 4, the first crest portion 5 and the second crest portion 6 after the work 3 is drawn. A forming surface 8 having the above-described shape and a holder surface corresponding to the blank portion 7 of the work 3 and connected to the outer edge of the forming surface 8 are formed. Moreover, the molding surface 8 and the holder surface 9 are coated with a synthetic resin.
下型２は、固定の基台１０と、上型１の成形面８と協働
して第１山部５を形成すべく基台１０上に固定される固
定パンチ１１と、成形面８と協働して平坦部４を形成す
べく固定パンチ１１の内方で上下移動可能に配設される
第１可動パンチ１２と、成形面８と協働して第２山部６
を形成すべく固定パンチ１１の外方で上下移動可能に配
設される第２可動パンチ１３と、ホルダ面９と協働して
ワーク３のブランク部７を挟持すべく第２可動パンチ１
３の外方で上下移動可能に配設されるブランクホルダ１
４とを備え、固定パンチ１１、第１可動パンチ１２、第
２可動パンチ１３およびブランクホルダ１４の上面には
合成樹脂コーティングが施されている。The lower die 2 includes a fixed base 10, a fixed punch 11 fixed on the base 10 to form the first crest portion 5 in cooperation with the forming surface 8 of the upper die 1, and the forming surface 8. The first movable punch 12 is arranged to be movable up and down inside the fixed punch 11 to cooperate with each other to form the flat portion 4, and the second ridge portion 6 in cooperation with the forming surface 8.
Second movable punch 1 that is arranged to be movable up and down outside fixed punch 11 to form a punch, and second movable punch 1 that clamps blank portion 7 of work 3 in cooperation with holder surface 9.
A blank holder 1 arranged so as to be movable up and down outside 3
4, the fixed punch 11, the first movable punch 12, the second movable punch 13, and the blank holder 14 are coated with synthetic resin on their upper surfaces.
第１可動パンチ１２は、基台１０を上下移動自在に貫通
する複数のクッションピン１５で支持されており、自然
な状態では固定パンチ１１よりも上方に位置するように
して上方に向けて弾発付勢される。また第２可動パンチ
１３は、基台１０を上下移動自在に貫通するクッション
ピン１６で支持されており、自然な状態にある第１可動
パンチ１２とほぼ同一レベルとなるようにして、上方に
向けて弾発付勢される。さらに、ブランクホルダ１４
は、基台１０との間に介装したガスクッション１７で上
方に向けて弾発付勢されており、外力を加えない自然な
状態で、ブランクホルダ１４は自然な状態にある第１お
よび第２可動パンチ１２，１３よりも上方位置にある。The first movable punch 12 is supported by a plurality of cushion pins 15 penetrating the base 10 in a vertically movable manner. In a natural state, the first movable punch 12 is positioned above the fixed punch 11 and elastically fires upward. Be energized. The second movable punch 13 is supported by a cushion pin 16 penetrating the base 10 so as to be vertically movable, and is directed upward so that the second movable punch 13 is at substantially the same level as the first movable punch 12 in a natural state. And the bullet is activated. Furthermore, the blank holder 14
Is elastically urged upward by the gas cushion 17 interposed between the base 10 and the blank holder 14 in a natural state in which no external force is applied, and the blank holder 14 is in a natural state. It is located above the two movable punches 12 and 13.
次にこの実施例の作用について説明すると、ワーク３の
絞り成形にあたっては、第１図で示すように、上型１お
よび下型２を離間させた状態でワーク３を下型２上に載
置する。すなわち、下型２ではブランクホルダ１４が最
上方位置にあるので、ワーク３の外縁のブランク部７を
ブランクホルダ１４上に載置する。Next, the operation of this embodiment will be described. When drawing a work 3, as shown in FIG. 1, the work 3 is placed on the lower mold 2 with the upper mold 1 and the lower mold 2 separated from each other. To do. That is, since the blank holder 14 is at the uppermost position in the lower mold 2, the blank portion 7 at the outer edge of the work 3 is placed on the blank holder 14.
次いで上型１を降下させると、先ずホルダ面９がワーク
３のブランク部７に当接し、ワーク３のブランク部７が
第３図で示すようにホルダ面９およびブランクホルダ１
４間に挟持される。Next, when the upper die 1 is lowered, the holder surface 9 first comes into contact with the blank portion 7 of the work 3, and the blank portion 7 of the work 3 holds the holder surface 9 and the blank holder 1 as shown in FIG.
It is sandwiched between four.
この状態で上型１をさらに降下させると、第４図で示す
ように、成形面８と、第１および第２可動パンチ１２，
１３とでワーク３が加工され、平坦部４および第２山部
６が成形された後、第１および第２可動パンチ１２，１
３が降下するのに応じて、固定パンチ１１と成形面８と
で第１山部５が成形されていく。When the upper die 1 is further lowered in this state, as shown in FIG. 4, the forming surface 8 and the first and second movable punches 12,
After the work 3 is processed with 13 and the flat portion 4 and the second mountain portion 6 are formed, the first and second movable punches 12, 1 are formed.
As the 3 descends, the first ridge 5 is formed by the fixed punch 11 and the forming surface 8.
この際、第１山部５の両側では、第１および第２可動パ
ンチ１２，１３と、上型１の成形面８とでワーク３が挟
圧されており、金型に面当りしない部分でワーク３に引
張り部が生じることはなく、絞りしわが発生することも
ない。At this time, on both sides of the first mountain portion 5, the work 3 is clamped by the first and second movable punches 12 and 13 and the molding surface 8 of the upper mold 1, and the work 3 is not contacted with the mold. The work 3 does not have a tensile portion, and the drawing wrinkles do not occur.
上型１が第５図で示すように最下限位置まで降下する
と、上型１は、その成形面８が全面に亘りワーク３と密
接するように、下型２との間でワーク３全体を挟圧し、
これによりワーク３が、最終的な絞り形状すなわち平坦
部４、第１山部５および第２山部６を有する成形され
る。When the upper die 1 descends to the lowermost position as shown in FIG. 5, the upper die 1 moves the entire work 3 with the lower die 2 so that the forming surface 8 of the upper die 1 is in close contact with the work 3. Pinch,
As a result, the work 3 is formed into the final drawing shape, that is, the flat portion 4, the first mountain portion 5 and the second mountain portion 6.
Ｃ．発明の効果 以上のように本発明装置は、平坦部、第１山部および第
２山部の上面に対応した形状の成形面とその成形面の外
縁に連なるホルダ面とを下面に有して昇降可能な上型
と；成形面と協働して第１山部を成形すべく上型の下方
に固定配置される固定パンチと；成形面と協働して平坦
部を形成すべく固定パンチの内方で上下移動可能に配置
されるとともに自然な状態では固定パンチよりも上方に
突出すべく上方に向けて弾発付勢された第１可動パンチ
と；成形面と協働して第２山部を形成すべく固定パンチ
の外方で上下移動可能に配置されるとともに自然な状態
では自然な状態にある第１可動パンチとほぼ同一レベル
とすべく上方に向けて弾発付勢された第２可動パンチ
と；ホルダ面と協働してワークの外縁を挟圧保持すべく
第２可動パンチの外方で上下移動可能に配置されるとと
もに自然な状態では自然な状態にある第１および第２可
動パンチよりも上方に突出すべく上方に向けて弾発付勢
されたブランクホルダと；を備えるので、ワークの外縁
をホルダ面およびブランクホルダ間で挟持した後に、上
型に降下に応じて平坦部および第２山部が形成され、比
較的***量の大きな第１山部は、その両側を教示されて
最終的に絞り成形されるので金型に面当りしない引張り
部分が生じることを回避して、しわの発生を極力防止す
ることができる。C. EFFECTS OF THE INVENTION As described above, the device of the present invention has, on the lower surface, the molding surface having a shape corresponding to the upper surfaces of the flat portion, the first crest portion and the second crest portion, and the holder surface connected to the outer edge of the molding surface. An upper mold that can be raised and lowered; a fixed punch that is fixedly arranged below the upper mold to cooperate with the molding surface to mold the first mountain portion; a fixed punch that cooperates with the molding surface to form a flat portion A first movable punch that is arranged so as to be movable up and down inside and is elastically urged upward so as to project above the fixed punch in a natural state; It was arranged so that it could move up and down outside the fixed punch to form a mountain portion, and in the natural state, it was elastically urged upward to reach the same level as the first movable punch which is in the natural state. A second movable punch; a second movable punch for holding the outer edge of the work under pressure in cooperation with the holder surface. A blank holder that is arranged so as to be vertically movable outside the punch and that is elastically urged upward so as to project above the first and second movable punches that are in a natural state in a natural state; Since the outer edge of the work is clamped between the holder surface and the blank holder, the flat portion and the second ridge portion are formed in the upper die according to the descent, and the first ridge portion having a relatively large amount of protrusion is Since both sides are taught and the final drawing is performed, it is possible to avoid the occurrence of a tensile portion that does not contact the mold, and to prevent wrinkles from occurring as much as possible.
図面は本発明の一実施例を示すもので、第１図は本発明
装置の縦断側面図、第２図はワークの縦断面図、第３
図，第４図および第５図は絞り成形過程を順次説明する
ための第１図に対応した縦断側面図である。 １……上型、３……ワーク、４……平坦部、５……第１
山部、６……第２山部、８……成形面、９……ホルダ
面、１１……固定パンチ、１２……第１可動パンチ、１
３……第２可動パンチ、１４……ブランクホルダThe drawings show one embodiment of the present invention. FIG. 1 is a vertical sectional side view of an apparatus of the present invention, FIG. 2 is a vertical sectional view of a work, and FIG.
FIG. 4, FIG. 4 and FIG. 5 are vertical sectional side views corresponding to FIG. 1 for sequentially explaining the drawing process. 1 ... Upper mold, 3 ... Work, 4 ... Flat part, 5 ... First
Mountain part, 6 ... second mountain part, 8 ... molding surface, 9 ... holder surface, 11 ... fixed punch, 12 ... first movable punch, 1
3 ... 2nd movable punch, 14 ... Blank holder
Claims (1)
坦部と、平坦部の外方に位置して上方に***した第１山
部と、第１山部よりも***量を小さくして第１山部の外
方で上方に***するとともに平坦部とほぼ同一レベルに
ある第２山部とを形成するための薄板状ワークの絞り金
型装置において、平坦部、第１山部および第２山部の上
面に対応した形状の成形面とその成形面の外縁に連なる
ホルダ面とを下面に有して昇降可能な上型と；成形面と
協働して第１山部を成形すべく上型の下方に固定配置さ
れる固定パンチと；成形面と協働して平坦部を形成すべ
く固定パンチの内方で上下移動可能に配置されるととも
に自然な状態では固定パンチよりも上方に突出すべく上
方に向けて弾発付勢された第１可動パンチと；成形面と
協働して第２山部を形成すべく固定パンチの外方で上下
移動可能に配置されるとともに自然な状態では自然な状
態にある第１可動パンチとほぼ同一レベルとすべく上方
に向けて弾発付勢された第２可動パンチと；ホルダ面と
協働してワークの外縁を挟圧保持すべく第２可動パンチ
の外方で上下移動可能に配置されるとともに自然な状態
では自然な状態にある第１および第２可動パンチよりも
上方に突出すべく上方に向けて弾発付勢されたブランク
ホルダと；を備えることを特徴とする薄板状ワークの絞
り金型装置。1. A thin plate-shaped work is drawn to form a flat portion in the central portion, a first ridge portion located outside the flat portion and bulging upward, and the amount of bulge is smaller than that of the first ridge portion. In the drawing die device for a thin plate-like work for forming a second mountain portion that is substantially level with the flat portion while protruding upward outside the first mountain portion, the flat portion, the first mountain portion And an upper mold having a molding surface having a shape corresponding to the upper surface of the second mountain portion and a holder surface connected to the outer edge of the molding surface on the lower surface and capable of moving up and down; the first mountain portion in cooperation with the molding surface. A fixed punch fixedly arranged below the upper die for forming; arranged vertically movable inside the fixed punch to form a flat portion in cooperation with the forming surface, and in a natural state, the fixed punch Also the first movable punch which is elastically urged upward so as to project upward; and the second mountain portion in cooperation with the forming surface. It is arranged so that it can move up and down outside the fixed punch to be formed, and in the natural state it is the second movable punch which is elastically urged upward so as to be at approximately the same level as the first movable punch which is in the natural state. Punch and; first movable second movable second movable movable vertically arranged outside the second movable punch to hold the outer edge of the work in cooperation with the holder surface. And a blank holder that is elastically urged upward so as to project above the punch, and a drawing die device for a thin plate-shaped work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61255387A JPH0659510B2 (en) | 1986-10-27 | 1986-10-27 | Thin plate work drawing die device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61255387A JPH0659510B2 (en) | 1986-10-27 | 1986-10-27 | Thin plate work drawing die device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63108921A JPS63108921A (en) | 1988-05-13 |
| JPH0659510B2 true JPH0659510B2 (en) | 1994-08-10 |
Family
ID=17278051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61255387A Expired - Fee Related JPH0659510B2 (en) | 1986-10-27 | 1986-10-27 | Thin plate work drawing die device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0659510B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4801645B2 (en) * | 2007-08-31 | 2011-10-26 | 株式会社神戸製鋼所 | Aluminum alloy sheet press forming method and press apparatus |
| CN105945150B (en) * | 2016-05-25 | 2017-12-12 | 奇瑞汽车股份有限公司 | Side wall outer panel of automobile body drawing die and drawing method |
| JP7155578B2 (en) * | 2018-03-30 | 2022-10-19 | マツダ株式会社 | Processing device and method |
-
1986
- 1986-10-27 JP JP61255387A patent/JPH0659510B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63108921A (en) | 1988-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |