JP2007190563A - Die - Google Patents

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JP2007190563A
JP2007190563A JP2006008597A JP2006008597A JP2007190563A JP 2007190563 A JP2007190563 A JP 2007190563A JP 2006008597 A JP2006008597 A JP 2006008597A JP 2006008597 A JP2006008597 A JP 2006008597A JP 2007190563 A JP2007190563 A JP 2007190563A
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mold
cavity
liquid
cooling
opening
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Sadao Horiie
貞雄 堀家
Hiroyoshi Usui
啓悦 臼井
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ATSUTA SEIKI KK
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ATSUTA SEIKI KK
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Priority to JP2006008597A priority Critical patent/JP2007190563A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To easily make cooling and heating of a die possible by a simple constitution. <P>SOLUTION: In the die 10 in which the die 10 is heated and cooled while performing press working by holding a material 46 to be worked with a lower die 20 and an upper die 40, a void 21 is formed in the interior of the lower die 20; a liquid supply tubes 31, 32 for supplying a liquid 35 for cooling or heating and a liquid draining tubes 33, 34 for draining the liquid 35 for cooling or heating in the void 21 are provided and opening parts 33a, 34a for the liquid draining tubes 33, 34 are provided at the upper end part 23a of the inside of the void 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、プレス加工時に金型の温度を調節する金型に関し、特に下型の冷却および加熱を容易にした金型に関するものである。   The present invention relates to a mold that adjusts the temperature of a mold at the time of press working, and more particularly to a mold that facilitates cooling and heating of a lower mold.

従来、ダイクエンチ用金型において、プレス加工と同時に焼き入れをするために、金型を冷却することが行われている（例えば特許文献１参照）。この場合、金型を冷却するために、金型の下型および上型内に金型冷却用管路を形成し、この金型冷却用管路に冷却剤を流通させている。
具体的には、図３に示すように、金型５０は下型６０および上型７０を備え、下型６０内には空洞６１が形成され、空洞６１には供給管６３により冷却剤６５が供給され、空洞６１内の冷却剤６５は排出管６４により排出される。この場合、供給管６３の開口部および排出管６４の開口部は空洞６１の下部に形成されているので、冷却剤６５が液体の場合は、冷却剤６５の液面６５ａは空洞６１内の下部に位置し、空洞６１内の液面６５ａ上は空気層６６になる。
なお、上型７０内の空洞７１にも供給管７３により冷却剤７５が供給され、空洞７１内の冷却剤７５は排出管７４により排出される。しかし、この場合は、排出管７４の開口部が空洞７１の上端部に位置し、冷却剤７５が液体であっても、冷却剤７５は空洞７１内に充満される。このため、空洞７１内に空気層が形成される余地はない。 2. Description of the Related Art Conventionally, in a die quench die, the die is cooled in order to quench at the same time as pressing (see, for example, Patent Document 1). In this case, in order to cool the mold, a mold cooling pipe is formed in the lower mold and the upper mold of the mold, and a coolant is circulated through the mold cooling pipe.
Specifically, as shown in FIG. 3, the mold 50 includes a lower mold 60 and an upper mold 70, a cavity 61 is formed in the lower mold 60, and a coolant 65 is supplied to the cavity 61 by a supply pipe 63. The coolant 65 in the cavity 61 is supplied and discharged through the discharge pipe 64. In this case, since the opening of the supply pipe 63 and the opening of the discharge pipe 64 are formed in the lower part of the cavity 61, when the coolant 65 is liquid, the liquid level 65 a of the coolant 65 is the lower part in the cavity 61. The air layer 66 is located on the liquid level 65 a in the cavity 61.
Note that the coolant 75 is also supplied to the cavity 71 in the upper mold 70 through the supply pipe 73, and the coolant 75 in the cavity 71 is discharged through the discharge pipe 74. However, in this case, even if the opening of the discharge pipe 74 is located at the upper end of the cavity 71 and the coolant 75 is liquid, the coolant 75 is filled in the cavity 71. For this reason, there is no room for an air layer to be formed in the cavity 71.

また、逆にステンレス等の加工しにくい被加工材料をプレス加工する場合には、金型を加熱することが必要となる（例えば特許文献１参照）。この場合には、被加工材料を温・熱間加工する場合には、ヒータにより金型を加熱する方法、被加工材料に通電して被加工材料をジュール熱で加熱する方法などがある。
特開２００５−１９９３００号公報 On the other hand, when a work material that is difficult to process, such as stainless steel, is pressed, it is necessary to heat the mold (see, for example, Patent Document 1). In this case, when the workpiece material is warm / hot-worked, there are a method of heating the mold with a heater, a method of energizing the workpiece material and heating the workpiece material with Joule heat, and the like.
JP 2005-199300 A

しかし、上述の従来例では、金型および被加工材料の冷却のための手段と加熱のための手段が別個に構成されているので、金型全体の構成が複雑になるとともに、冷却の場合には、空洞６１内の空気層６６の存在のため、液状の冷却剤６５により下型６０を冷却することが容易ではなくなるという問題があった。
そこで、本発明が解決しようとする課題は、簡単な構成で容易に金型の下型の冷却および加熱をすることができるようにすることである。 However, in the above-described conventional example, since the means for cooling the mold and the work material and the means for heating are separately configured, the structure of the entire mold becomes complicated, and in the case of cooling. However, due to the presence of the air layer 66 in the cavity 61, it is not easy to cool the lower mold 60 with the liquid coolant 65.
Therefore, the problem to be solved by the present invention is to allow the lower mold of the mold to be cooled and heated easily with a simple configuration.

上記課題を解決するため、請求項１記載の発明は、被加工材料を下型と上型で挟んでプレス加工しつつ金型を冷却または加熱する金型であって、前記下型の内部に空洞を形成し、前記空洞内に前記冷却または加熱用の液体（例えば冷却または加熱した水、油等）を供給する給液管と、前記空洞内の前記冷却または加熱用の液体を排出する排液管とを備え、前記空洞内の上端部に前記排液管の開口部を設けたことを特徴とする金型である。
これにより、金型の下型の内部に形成された空洞内に給液管の開口部から金型の冷却または加熱用の液体を供給することにより、この液体により金型を冷却または加熱することができる。その際、前記空洞内の上端部に排液管の開口部を設けているので、この開口部の位置まで前記冷却または加熱用の液体を満たすことができる。このため、前記冷却または加熱用の液体と下型との間の熱の伝導が容易になり、下型の冷却または加熱が容易になる。 In order to solve the above-mentioned problem, the invention described in claim 1 is a mold for cooling or heating a mold while pressing a material to be processed between the lower mold and the upper mold, and is provided inside the lower mold. A liquid supply pipe that forms a cavity and supplies the cooling or heating liquid (for example, cooled or heated water, oil, etc.) into the cavity, and a drain that discharges the cooling or heating liquid in the cavity. And a liquid pipe, and an opening of the drain pipe is provided at an upper end portion in the cavity.
Thereby, the mold is cooled or heated by supplying liquid for cooling or heating the mold from the opening of the liquid supply pipe into the cavity formed inside the lower mold of the mold. Can do. In that case, since the opening part of the drainage pipe is provided in the upper end part in the said cavity, the said liquid for cooling or heating can be filled to the position of this opening part. For this reason, heat conduction between the cooling or heating liquid and the lower mold becomes easy, and cooling or heating of the lower mold becomes easy.

さらに、請求項２記載の発明は、請求項１記載の金型であって、前記下型の空洞内の最上端部の壁面に凹部を設け、この凹部内に前記排液管の開口部を設けたことを特徴とする金型である。
これにより、下型の空洞内の最上部の壁面に形成された凹部に排液管の開口部が設けられているので、この開口部の位置まで空洞内に冷却または加熱用の液体を満たすことができる。 Furthermore, the invention according to claim 2 is the mold according to claim 1, wherein a recess is provided in a wall surface of the uppermost end in the cavity of the lower mold, and an opening of the drainage pipe is provided in the recess. It is the metal mold | die characterized by providing.
As a result, since the opening of the drainage pipe is provided in the recess formed in the uppermost wall surface in the lower mold cavity, the cooling or heating liquid is filled in the cavity to the position of this opening. Can do.

さらに、請求項３記載の発明は、請求項１または２記載の金型であって、前記下型の空洞内の下端部に前記給液管の開口部を設けたことを特徴とする金型である。
これにより、前記下型の空洞内において前記冷却または加熱用の液体を前記空洞内の下端部から上端部の方向に循環させることができる。 Further, the invention according to claim 3 is the mold according to claim 1 or 2, wherein an opening of the liquid supply pipe is provided at a lower end portion in the cavity of the lower mold. It is.
Accordingly, the cooling or heating liquid can be circulated from the lower end portion to the upper end portion in the cavity in the lower mold cavity.

請求項１記載の発明によれば、簡単な構成の金型で、金型の下型を冷却または加熱して被加工材料をプレス加工する際に被加工材料を冷却または加熱することが容易になる。
さらに、請求項２記載の発明によれば、請求項１記載の発明の効果とともに、金型の下型を冷却または加熱することが一層容易になる。
さらに、請求項３記載の発明は、請求項１または２記載の発明の効果とともに、金型の下型を冷却または加熱することが一層容易になる。 According to the first aspect of the present invention, it is easy to cool or heat the work material when pressing the work material by cooling or heating the lower mold of the mold with a simple mold. Become.
Furthermore, according to the invention described in claim 2, together with the effect of the invention described in claim 1, it becomes easier to cool or heat the lower mold of the mold.
Furthermore, the invention according to claim 3 can further cool or heat the lower mold of the mold together with the effect of the invention according to claim 1 or 2.

以下、本発明における実施の形態を図面に基づいて説明する。
図１は本発明の実施の形態に係る金型の断面を示し、図２は図１の変形例の金型の下型の断面を示し、その（ａ）は金型の下型全体の断面を示し、（ｂ）は（ａ）の下型の一部分を拡大して示す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a cross section of a mold according to an embodiment of the present invention, FIG. 2 shows a cross section of a lower mold of the modified example of FIG. 1, and (a) shows a cross section of the entire lower mold of the mold. (B) shows an enlarged part of the lower mold of (a).

図１に示すように、金型１０は被加工材料４６を下型２０と上型４０で挟んでプレス加工しつつ、金型１０を冷却または加熱するものである。なお、下型２０は下型支持部１１に支えられ、上型４０は上型支持部１２に支えられている。   As shown in FIG. 1, the mold 10 cools or heats the mold 10 while pressing the work material 46 between the lower mold 20 and the upper mold 40. The lower mold 20 is supported by the lower mold support portion 11, and the upper mold 40 is supported by the upper mold support portion 12.

下型２０の内部に空洞２１が形成され、この空洞２１は仕切壁２２により第１室２３と第２室２４に区分けされている。第１室２３内に前記冷却または加熱用の液体３５を供給する第１給液管３１および第１室２３内の前記冷却または加熱用の液体３５を排出する第１排液管３３が配設され、第２室２４内に前記冷却または加熱用の液体３５を供給する第２給液管３２および第２室２４内の前記冷却または加熱用の液体３５を排出する第２排液管３４が配設されている。
そして、第１室２３の上端部２３ａに第１排液管３３の開口部３３ａが設けられている。第２室２４においても第２排液管３４の開口部３４ａが同様に配設されている。 A cavity 21 is formed inside the lower mold 20, and the cavity 21 is divided into a first chamber 23 and a second chamber 24 by a partition wall 22. A first liquid supply pipe 31 that supplies the cooling or heating liquid 35 into the first chamber 23 and a first drain pipe 33 that discharges the cooling or heating liquid 35 in the first chamber 23 are disposed. A second liquid supply pipe 32 for supplying the cooling or heating liquid 35 into the second chamber 24 and a second drainage pipe 34 for discharging the cooling or heating liquid 35 in the second chamber 24. It is arranged.
An opening 33 a of the first drainage pipe 33 is provided at the upper end 23 a of the first chamber 23. Also in the second chamber 24, the opening 34a of the second drainage pipe 34 is similarly arranged.

さらに、図１に示すように、空洞２１内の下端部２１ａに第１給液管３１の開口部３１ａおよび第２給液管３２の開口部３２ａが設けられている。   Further, as shown in FIG. 1, an opening 31 a of the first liquid supply pipe 31 and an opening 32 a of the second liquid supply pipe 32 are provided at the lower end 21 a in the cavity 21.

なお、上型４０内においても空洞４１が形成され、空洞４１は仕切壁４２により２つに区分されているが、この場合には、空洞４１全体として給液管４３および排液管４４が設けられている。なお、給液管４３の開口部４３ａおよび排液管４４の開口部４４ａは空洞４１内に設けられている。これにより、空洞４１内に給液管４３から冷却または加熱用の液体４５を満たし、空洞４１内の冷却または加熱用の液体４５を排液管４４から排出することができ、この液体４５により上型４０を冷却または加熱することができる。   A cavity 41 is also formed in the upper mold 40, and the cavity 41 is divided into two by a partition wall 42. In this case, a liquid supply pipe 43 and a drain pipe 44 are provided as the entire cavity 41. It has been. The opening 43 a of the liquid supply pipe 43 and the opening 44 a of the drainage pipe 44 are provided in the cavity 41. Thus, the cooling or heating liquid 45 can be filled in the cavity 41 from the liquid supply pipe 43, and the cooling or heating liquid 45 in the cavity 41 can be discharged from the drainage pipe 44. The mold 40 can be cooled or heated.

さらに、図２（ａ）に示すように、金型１０ｘの下型２０ｘの空洞２１ｘ内は仕切壁２２ｘにより第１室２３ｘおよび第２室２４ｘに区分けされている。そして、図２（ｂ）に示すように、第１室２３ｘの最上端部２３ａｘの壁面２５に凹部２５ａを設け、この凹部２５ａ内に第１排液管３３ｘの開口部３３ａｘを設けている。
そして、図２（ａ）に示すように、第２室２４ｘにおいても、第２排液管３４ｘの開口部３４ａｘが第１室２３ｘの第１排液管３３ｘの開口部３３ａｘと同様に配設されている。 Further, as shown in FIG. 2A, the inside of the cavity 21x of the lower mold 20x of the mold 10x is divided into a first chamber 23x and a second chamber 24x by a partition wall 22x. As shown in FIG. 2B, a recess 25a is provided in the wall surface 25 of the uppermost end 23ax of the first chamber 23x, and an opening 33ax of the first drainage pipe 33x is provided in the recess 25a.
As shown in FIG. 2A, also in the second chamber 24x, the opening 34ax of the second drainage pipe 34x is disposed in the same manner as the opening 33ax of the first drainage pipe 33x of the first chamber 23x. Has been.

なお、第１室２３ｘにおける第１給液管３１ｘの開口部３１ａｘおよび第２室２４ｘにおける第２給液管３２ｘの開口部３２ａｘは空洞２１ｘの下端部２１ａｘに配設されている。   The opening 31ax of the first liquid supply pipe 31x in the first chamber 23x and the opening 32ax of the second liquid supply pipe 32x in the second chamber 24x are disposed at the lower end 21ax of the cavity 21x.

上記構成の金型１０の下型２０は以下の動作をする。
金型１０の下型２０の内部に形成された空洞２１内に第１および第２給液管３１、３２の開口部３１ａ、３２ａから下型２０の冷却または加熱用の液体３５を供給することにより、この液体３５により下型２０を冷却または加熱することができる。
その際、空洞２１内の第１室２３の上端部２３ａに第１排液管３３の開口部３３ａを設けているので、この開口部３３ａの位置まで冷却または加熱用の液体３５を満たすことができ、第１室２３内の液体３５の液面３６上の空気層３７は僅かなものになる。このことは、第２室２４においても同様である。このため、冷却または加熱用の液体３５と下型２０との間の熱の伝導が容易になり、下型２０の冷却または加熱が容易になる。 The lower mold 20 of the mold 10 having the above configuration operates as follows.
Supplying a liquid 35 for cooling or heating the lower mold 20 from the openings 31a, 32a of the first and second liquid supply pipes 31, 32 into a cavity 21 formed in the lower mold 20 of the mold 10. Thus, the lower mold 20 can be cooled or heated by the liquid 35.
At this time, since the opening 33a of the first drainage pipe 33 is provided at the upper end 23a of the first chamber 23 in the cavity 21, the cooling or heating liquid 35 can be filled up to the position of the opening 33a. The air layer 37 on the liquid level 36 of the liquid 35 in the first chamber 23 is small. The same applies to the second chamber 24. For this reason, heat conduction between the cooling or heating liquid 35 and the lower mold 20 is facilitated, and cooling or heating of the lower mold 20 is facilitated.

さらに、図２においては、金型１０ｘの下型２０ｘの空洞２１ｘの第１室２３ｘの最上部２３ａｘの壁面２５に形成された凹部２５ａに第１排液管３３ｘの開口部３３ａｘが設けられているので、この開口部３３ａｘの位置まで第１室２３ｘ内に冷却または加熱用の液体３５ｘを満たすことができる。このため、空洞２１ｘの第１室２３ｘの最上部２３ａｘにおいて、液体３５ｘの液面３６ｘの上の空気層３７ｘは極めて僅かなものになる。このことは、第２室２４ｘにおいても同様である。   Further, in FIG. 2, an opening 33ax of the first drainage pipe 33x is provided in a recess 25a formed in the wall surface 25 of the uppermost portion 23ax of the first chamber 23x of the cavity 21x of the lower mold 20x of the mold 10x. Therefore, the cooling or heating liquid 35x can be filled in the first chamber 23x up to the position of the opening 33ax. For this reason, in the uppermost part 23ax of the first chamber 23x of the cavity 21x, the air layer 37x on the liquid surface 36x of the liquid 35x is extremely small. The same applies to the second chamber 24x.

さらに、図１において、空洞２１の第１室２３内において前記冷却または加熱用の液体３５を空洞２１内の下端部２１ａから上端部２３ａの方向に循環させることができる。このことは、第２室２４および図２の下型２０ｘにおいても同様である。   Further, in FIG. 1, the cooling or heating liquid 35 can be circulated in the first chamber 23 of the cavity 21 from the lower end 21 a to the upper end 23 a in the cavity 21. The same applies to the second chamber 24 and the lower mold 20x in FIG.

なお、上記の実施の形態において、液体３５、３５ｘが水であるときは、水を１００℃まで加熱することができるので、下型２０、２０ｘを１００℃まで加熱することができる。また、液体３５、３５ｘが油であるときは、油を３００℃まで加熱することができるので、下型２０、２０ｘを３００℃まで加熱することができる。
また、各下型２０、２０ｘの空洞２１、２１ｘは２つに区分されているが、これに限定されず、必要に応じて各空洞２１、２１ｘは任意の数に区分可能である。さらに、空洞２１、２１ｘ内の前記区分がなくてもよい。
また、各給液管３１、３２、３１ｘ、３２ｘには図示しないポンプにより液体３５、３５ｘが送りこまれる場合がある。なお、液体３５、３５ｘが水道水の場合は、水道水の水圧により水道水が各給液管３１、３２、３１ｘ、３２ｘに送りこまれるので、前記ポンプは不要である。 In the above embodiment, when the liquids 35 and 35x are water, the water can be heated to 100 ° C., so that the lower molds 20 and 20x can be heated to 100 ° C. Moreover, when the liquids 35 and 35x are oil, since the oil can be heated to 300 ° C, the lower molds 20 and 20x can be heated to 300 ° C.
Moreover, although the cavities 21 and 21x of each lower mold | type 20 and 20x are divided into two, it is not limited to this, Each cavities 21 and 21x can be divided into arbitrary numbers as needed. Furthermore, the section in the cavities 21, 21x may not be present.
Moreover, the liquids 35 and 35x may be sent to the liquid supply pipes 31, 32, 31x, and 32x by a pump (not shown). In addition, when the liquids 35 and 35x are tap water, since the tap water is sent into each liquid supply pipe 31, 32, 31x, and 32x by the water pressure of a tap water, the said pump is unnecessary.

本発明の実施の形態に係る金型の断面図である。It is sectional drawing of the metal mold | die which concerns on embodiment of this invention. 図１の変形例の金型の断面図であり、その（ａ）は金型の下型全体の断面を示し、（ｂ）は（ａ）の下型の一部分を拡大して示す。It is sectional drawing of the metal mold | die of the modification of FIG. 1, (a) shows the cross section of the whole lower mold of a metal mold | die, (b) expands and shows a part of lower mold of (a). 従来例の金型の断面図である。It is sectional drawing of the metal mold | die of a prior art example.

符号の説明Explanation of symbols

１０、１０ｘ 金型
２０、２０ｘ 下型
２１、２１ｘ 空洞
２１ａ、２１ａｘ 下端部
２３ａ 上端部
２３ａｘ 最上端部
２５ 壁面
２５ａ 凹部
３１、３１ｘ 第１給液管
３１ａ、３１ａｘ 開口部
３２、３２ｘ 第２給液管
３２ａ、３２ａｘ 開口部
３３、３３ｘ 第１排液管
３３ａ、３３ａｘ 開口部
３４、３４ｘ 第２排液管
３４ａ、３４ａｘ 開口部
３５、３５ｘ 冷却または加熱用液体
４０ 上型
４６ 被加工材料
10, 10x Mold 20, 20x Lower mold 21, 21x Cavity 21a, 21ax Lower end 23a Upper end 23ax Uppermost end 25 Wall 25a Recess 31, 31x First supply pipe 31a, 31ax Opening 32, 32x Second supply liquid Pipe 32a, 32ax Opening 33, 33x First drain pipe 33a, 33ax Opening 34, 34x Second drain pipe 34a, 34ax Opening 35, 35x Cooling or heating liquid 40 Upper mold 46 Work material

Claims (3)

被加工材料を下型と上型で挟んでプレス加工しつつ金型を冷却または加熱する金型であって、
前記下型の内部に空洞を形成し、
前記空洞内に前記冷却または加熱用の液体を供給する給液管と、前記空洞内の前記冷却または加熱用の液体を排出する排液管とを備え、
前記空洞内の上端部に前記排液管の開口部を設けたことを特徴とする金型。 A mold that cools or heats a mold while pressing a work material between a lower mold and an upper mold,
Forming a cavity inside the lower mold,
A liquid supply pipe for supplying the cooling or heating liquid into the cavity, and a drain pipe for discharging the cooling or heating liquid in the cavity;
A mold characterized in that an opening of the drainage pipe is provided at an upper end portion in the cavity. 請求項１記載の金型であって、
前記下型の空洞内の最上端部の壁面に凹部を設け、この凹部内に前記排液管の開口部を設けたことを特徴とする金型。 The mold according to claim 1, wherein
A mold having a recess provided in a wall surface at an uppermost end in the cavity of the lower mold, and an opening of the drainage pipe provided in the recess. 請求項１または２記載の金型であって、
前記下型の空洞内の下端部に前記給液管の開口部を設けたことを特徴とする金型。
The mold according to claim 1 or 2,
A metal mold characterized in that an opening of the liquid supply pipe is provided at a lower end portion in the cavity of the lower mold.
JP2006008597A 2006-01-17 2006-01-17 Die Pending JP2007190563A (en)

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EP2309008A3 (en) * 2009-10-12 2012-06-13 voestalpine Automotive GmbH Device for producing hardened steel components
KR101354149B1 (en) 2012-03-30 2014-01-27 한국과학기술원 System for focusing and transferring to the metal sheet of the external heat sources for the sheet metal forming of the low formability material
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CN114603080A (en) * 2022-03-14 2022-06-10 江苏大洋精锻有限公司 Flange shaft warm forging equipment and method thereof

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EP2062987A1 (en) * 2007-11-21 2009-05-27 Benteler Automobiltechnik GmbH Heat form press
EP2309008A3 (en) * 2009-10-12 2012-06-13 voestalpine Automotive GmbH Device for producing hardened steel components
KR101354149B1 (en) 2012-03-30 2014-01-27 한국과학기술원 System for focusing and transferring to the metal sheet of the external heat sources for the sheet metal forming of the low formability material
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US20170320121A1 (en) * 2014-12-11 2017-11-09 Thyssenkrupp Steel Europe Ag Tool for shaping and/or partially press hardening a workpiece and method for shaping and/or partially press hardening a workpiece
JP2018501113A (en) * 2014-12-18 2018-01-18 オートテック・エンジニアリング・アグルパシオン・デ・インテレス・エコノミコＡｕｔｏｔｅｃｈ Ｅｎｇｉｎｅｅｒｉｎｇ Ａ．Ｉ．Ｅ． Tool for hot-formed structural members
KR20170095869A (en) * 2014-12-18 2017-08-23 오토테크 엔지니어링 에이.아이.이. A tool for hot forming structural components
CN107107155A (en) * 2014-12-18 2017-08-29 自动工程公司 Instrument for thermoformed structure part
CN107107155B (en) * 2014-12-18 2020-01-24 自动工程有限公司 Tool for hot forming structural parts
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KR102392328B1 (en) * 2014-12-18 2022-05-02 오토테크 엔지니어링 에스.엘. A tool for hot forming structural components
CN106623596A (en) * 2016-12-22 2017-05-10 马鞍山创诚中小企业服务中心有限公司 Accurately positioned hydraulic punching press
CN106623595A (en) * 2016-12-22 2017-05-10 马鞍山创诚中小企业服务中心有限公司 Punching machine
CN106424381A (en) * 2016-12-22 2017-02-22 马鞍山创诚中小企业服务中心有限公司 Die base for stamping machine
CN106424311A (en) * 2016-12-23 2017-02-22 马鞍山创诚中小企业服务中心有限公司 Application method of punching machine
CN110465595A (en) * 2019-09-26 2019-11-19 天津职业技术师范大学(中国职业培训指导教师进修中心) Stamping die and stamping device
CN114603080A (en) * 2022-03-14 2022-06-10 江苏大洋精锻有限公司 Flange shaft warm forging equipment and method thereof

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