JPH08309454A - Press die material and press die - Google Patents
Press die material and press dieInfo
- Publication number
- JPH08309454A JPH08309454A JP11442395A JP11442395A JPH08309454A JP H08309454 A JPH08309454 A JP H08309454A JP 11442395 A JP11442395 A JP 11442395A JP 11442395 A JP11442395 A JP 11442395A JP H08309454 A JPH08309454 A JP H08309454A
- Authority
- JP
- Japan
- Prior art keywords
- base metal
- tool
- press die
- brazing
- buffer
- 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
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属板の打抜き、金属
粉末およびセラミックス材料の成形加工等に用いるプレ
ス金型材およびプレス金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press die material and a press die used for punching a metal plate, forming metal powder and ceramic material.
【０００２】[0002]
【従来の技術】金属板の打抜き、金属粉末およびセラミ
ックス材料の成形加工等に用いるプレス金型では、しば
しば、金型の長寿命化、高性能化のために超硬合金が用
いられる。しかし超硬合金は高価であり加工も困難であ
ることから、被加工材に作用する工具部のみを超硬合金
とし、これを鋼製の台金部に接合して金型を構成するこ
とにより金型を低廉化することが行われている。2. Description of the Related Art In a press die used for punching a metal plate, forming a metal powder and a ceramic material, etc., a cemented carbide is often used in order to prolong the life of the die and improve its performance. However, because cemented carbide is expensive and difficult to machine, only the tool part that acts on the work material is cemented, and this is joined to the steel base metal part to form the mold. The cost of the mold is being reduced.
【０００３】[0003]
【発明が解決しようとする課題】前記の金型において超
硬合金製の工具部と鋼製の台金部を接合する方法として
は、従来、ボルトによる締結が行われている。すなわ
ち、図３に例示するように台金部１１を貫通するボルト
孔１２にボルト１３を通し、工具部１４に設けるねじ孔
１５にボルト１３のねじ部を螺合することによって台金
部１１と工具部１４とを締結する。また、工具部１４と
台金部１１との接合部に働くせん断力によって工具部１
４と台金部１１との間に生じる位置ずれを防ぐために、
工具部１４と台金部１１とを貫通するリーマ孔１６、１
７を穿ち、セットピン１８を嵌入して位置決めを行う。
必要に応じて締結するボルト１３およびセットピン１８
の数を増す。As a method for joining the tool part made of cemented carbide and the base metal part made of steel in the above-mentioned mold, fastening with bolts has been conventionally performed. That is, as illustrated in FIG. 3, the bolt 13 is passed through the bolt hole 12 penetrating the base metal portion 11, and the threaded portion of the bolt 13 is screwed into the screw hole 15 provided in the tool portion 14. The tool part 14 is fastened. Moreover, the shear force acting on the joint portion between the tool portion 14 and the base metal portion 11 causes the tool portion 1 to move.
In order to prevent the positional displacement between 4 and the base metal part 11,
Reamer holes 16, 1 penetrating the tool part 14 and the base metal part 11.
7 is punched, and the set pin 18 is inserted to perform positioning.
Bolt 13 and set pin 18 to be fastened as required
Increase the number of.
【０００４】以上のように、工具部と台金部とをボルト
締結するためには、硬度の高い超硬合金の工具部にねじ
孔やリーマ孔を設けるという困難な加工が必要となる。
特に大型の金型においては、超硬合金に多数のねじ孔と
リーマ孔を穿つ必要が有る。工具部と台金部とを接合す
るその他の方法として、ろう付けが考えられる。この方
法は、切削加工用のバイトチップをシャンクに接合する
場合など小型の工具に対して適用することがある。しか
し、プレス金型、例えば自動車エンジン用ガスケットの
打抜き用金型などの特に大型の金型では、工具部と台金
部との接合面積が大きいために、ろう付け部に気泡を残
留するなどの接合欠陥を避けることができない。As described above, in order to bolt the tool portion and the base metal portion to each other with bolts, it is difficult to form a screw hole or a reamed hole in the tool portion of cemented carbide having a high hardness.
Particularly in a large mold, it is necessary to form a large number of screw holes and reamed holes in the cemented carbide. As another method for joining the tool portion and the base metal portion, brazing can be considered. This method may be applied to small tools, such as when joining a cutting bite to a shank. However, in a press die, for example, a particularly large die such as a die for punching a gasket for an automobile engine, since the bonding area between the tool portion and the base metal portion is large, air bubbles may remain in the brazing portion. Junction defects cannot be avoided.
【０００５】また、打抜き用金型では、ワイヤカット放
電加工法によって金型材から金型を切出すことが行われ
る。しかし、従来のろう付け法によって接合した金型材
は、ワイヤカット加工時に超硬合金の工具部に割れを生
じるという問題がある。そのため、従来、打抜き用金型
などの特に大型の金型では、工具部と台金部とをろう付
けによって接合した金型材を使用することができなかっ
た。In the die for punching, the die is cut out from the die material by the wire cut electric discharge machining method. However, the mold materials joined by the conventional brazing method have a problem that cracks are generated in the tool portion of the cemented carbide during wire cutting. Therefore, conventionally, in a particularly large die such as a die for punching, a die material in which a tool portion and a base metal portion are joined by brazing cannot be used.
【０００６】本発明は上記のごとき現状に鑑みてなされ
たもので、その目的とするところは、ろう付けによる接
合欠陥が少なく、ワイヤカット加工において超硬合金に
割れなどの欠陥を生じることのない、超硬合金の工具部
と鋼製台金とをろう付けした経済的なプレス金型材とプ
レス金型を提供することにある。The present invention has been made in view of the current situation as described above, and an object thereof is to have few bonding defects due to brazing and to prevent defects such as cracks in cemented carbide during wire cutting. To provide an economical press die material and press die in which a tool part made of cemented carbide and a steel base metal are brazed.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するた
め、本発明のプレス金型材は、超硬合金からなる工具部
と鋼からなる台金部とを備えるプレス金型材において、
前記工具部と前記台金部との間に、銅、ニッケル、銅合
金およびニッケル合金のうちいづれか一種からなる緩衝
部を設け、前記工具部および前記台金部と前記緩衝部と
をろう材によって真空ろう付けすることを特徴とする。In order to achieve the above object, a press die material of the present invention is a press die material including a tool portion made of cemented carbide and a base metal portion made of steel,
Between the tool portion and the base portion, copper, nickel, a buffer portion made of any one of copper alloy and nickel alloy is provided, the tool portion and the base portion and the buffer portion by a brazing material Characterized by vacuum brazing.
【０００８】また、本発明のプレス金型は、超硬合金か
らなる工具部と鋼からなる台金部とを備えるプレス金型
材において、前記工具部と前記台金部との間に、銅、ニ
ッケル、銅合金およびニッケル合金のうちいづれか一種
からなる緩衝部を設け、前記工具部および前記台金部と
前記緩衝部とをろう材によって真空ろう付けしてなるプ
レス金型材をワイヤカット放電加工法によって加工する
ことを特徴とする。Further, the press die of the present invention is a press die material comprising a tool part made of cemented carbide and a base metal part made of steel, and copper is provided between the tool part and the base metal part. A wire-cut electric discharge machining method is applied to a press die material obtained by vacuum-brazing the tool portion, the base metal portion, and the buffer portion with a brazing material by providing a buffer portion made of any one of nickel, copper alloy, and nickel alloy. It is characterized by being processed by.
【０００９】[0009]
【作用】本発明のプレス金型材において、超硬合金から
なる工具部は被加工材を加工する作用をもつ。鋼からな
る台金部は超硬合金からなる工具部の強度を補強する。
工具部と台金部との間に設ける緩衝部は、前記工具部と
前記台金部とをろう付けする際に、ろう材の凝固、冷却
に伴う収縮によって工具部および台金部に生じる残留応
力を低減する効果を有する。In the press die material of the present invention, the tool portion made of cemented carbide has a function of processing the material to be processed. The base metal part made of steel reinforces the strength of the tool part made of cemented carbide.
The buffer portion provided between the tool portion and the base metal portion is a residue generated in the tool portion and the base metal portion due to the solidification of the brazing material and the contraction accompanying cooling when brazing the tool portion and the base metal portion. It has the effect of reducing stress.
【００１０】緩衝部に用いる材料として銅、ニッケル、
銅合金およびニッケル合金を用いるのは、これらの金属
および合金が前記の残留応力の緩和に有効であり、ろう
付けに用いるろう材よりも融点が高く、かつ強度も高い
ことによる。緩衝部が残留応力を低減する効果は、緩衝
部の厚さが厚いほど大きい。しかし、緩衝部の厚さが過
大になると残留応力低減効果は飽和するとともに接合部
の強度が低下するので、緩衝部の厚さは０．２〜１ｍｍ
とするのが好ましい。As materials used for the buffer portion, copper, nickel,
The reason why the copper alloy and the nickel alloy are used is that these metals and alloys are effective in relaxing the above-mentioned residual stress and have a higher melting point and higher strength than the brazing filler metal used for brazing. The thicker the buffer portion is, the greater the effect that the buffer portion reduces the residual stress. However, when the thickness of the buffer portion becomes excessive, the residual stress reducing effect saturates and the strength of the joint portion decreases, so the thickness of the buffer portion is 0.2 to 1 mm.
Is preferred.
【００１１】ろう付け部に気泡が残留して接合部の強度
を低下することを防ぐために、ろう付けは真空ろう付け
とする。真空度は１ｔｏｒｒ以下とすることが好まし
い。ろう材としては緩衝部に用いる前記金属および合金
よりも融点の低いろう材を用いる。In order to prevent air bubbles from remaining in the brazing portion and reducing the strength of the joint portion, the brazing is vacuum brazing. The vacuum degree is preferably 1 torr or less. As the brazing material, a brazing material having a lower melting point than the metals and alloys used for the buffer portion is used.
【００１２】[0012]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。本発明の実施例を図１および図２に示す。工具部
材として縦１００ｍｍ、横１００ｍｍ、厚さ１０ｍｍの
ＪＩＳ Ｇ３相当で硬さＨＲＡ８８．５の超硬合金を、
台金部材として１００ｍｍ、横１００ｍｍ、厚さ２５ｍ
ｍのＪＩＳ Ｓ４５Ｃ相当で硬さＨＢ１５０の鋼を、ま
た緩衝部材として縦１００ｍｍ、横１００ｍｍで表１に
示す材質と厚さとを有する薄板を用意した。Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the present invention is shown in FIGS. As a tool member, a cemented carbide with a length of 100 mm, a width of 100 mm, and a thickness of 10 mm, which is equivalent to JIS G3 and has a hardness of HRA88.5,
As base metal member, 100 mm, width 100 mm, thickness 25 m
m, steel having a hardness of HB150 equivalent to JIS S45C, and a thin plate having a length of 100 mm and a width of 100 mm and having the material and thickness shown in Table 1 were prepared as a cushioning member.
【００１３】工具部材および台金部材の各々縦横１００
ｍｍ×１００ｍｍの面を真空ろう付けによって接合し
た。このとき、工具部材と台金部材との接合面の間にあ
ってかつ接合面全面に沿って緩衝部材を配置し、工具部
材と緩衝部材との間、および、緩衝部材と台金部材の間
をろう付けした。これにより、図１に示すように、工具
部４、台金部３、および緩衝部５からなり、工具部４と
緩衝部５、および緩衝部５と代金部３とがそれぞれろう
材６によってろう付けされた構造の金型材を得た。The length and width of each of the tool member and the base metal member are 100.
The mm × 100 mm surfaces were joined by vacuum brazing. At this time, a cushioning member is arranged between the joint surface of the tool member and the base metal member and along the entire joint surface, and the space between the tool member and the cushion member and between the buffer member and the base metal member is soldered. I attached it. As a result, as shown in FIG. 1, the tool portion 4, the base metal portion 3, and the cushioning portion 5 are formed, and the tool portion 4 and the cushioning portion 5, and the cushioning portion 5 and the price portion 3 are brazed by the brazing material 6, respectively. A mold material having the attached structure was obtained.
【００１４】また、比較例として、緩衝部材を配置する
ことなく、工具部材と台金部材とを直接ろう付けした試
料および水素雰囲気中でろう付けした試料を製作した。
ろう付け条件を表１に示す。As comparative examples, a sample in which the tool member and the base metal member were directly brazed and a sample in which the tool member and the base member were brazed in a hydrogen atmosphere without arranging a buffer member were manufactured.
The brazing conditions are shown in Table 1.
【００１５】[0015]
【表１】 [Table 1]
【００１６】上述のようにしてろう付けして得た金型材
について、超音波探傷試験によって接合状態を調べた。
接合面に垂直方向に超音波を入射して欠陥を検出して欠
陥部の面積を求め、（１−欠陥部面積／試験面積）の値
をもって接合率とした。Ｘ線残留応力測定法によって、
前記金型材の中央部について超硬合金の最大引張残留応
力を測定した。The bonding state of the die material obtained by brazing as described above was examined by an ultrasonic flaw detection test.
The area of the defective portion was obtained by detecting defects by injecting ultrasonic waves in the direction perpendicular to the joint surface, and the value of (1-defect portion area / test area) was taken as the joint rate. By the X-ray residual stress measurement method,
The maximum tensile residual stress of the cemented carbide was measured for the center of the die material.
【００１７】ワイヤカット放電加工によって前記金型材
の幅の中央部を切断し、金型材における割れの発生の有
無について調べた。また、ワイヤカット放電加工によ
り、接合面と垂直な方向に中心軸を有する直径１０ｍｍ
の円柱形試験片を切出し、接合部のせん断試験を行っ
た。以上の試験結果を表２に示す。The central portion of the width of the mold material was cut by wire cut electric discharge machining, and the presence or absence of cracks in the mold material was examined. Also, by wire-cut electric discharge machining, the diameter is 10 mm with the central axis in the direction perpendicular to the joint surface.
The cylindrical test piece of was cut out and a shear test of the joint portion was performed. Table 2 shows the above test results.
【００１８】[0018]
【表２】 [Table 2]
【００１９】表２より、本発明の実施例ではいずれも接
合率が１００％であり、残留応力は緩衝部を有しない比
較例２に比べて低く、ワイヤカット加工による割れも生
じることがなく、接合部のせん断強度も高く、優れた金
型材であることが判る。以上説明したように、本発明に
よると、工具部と台金部の接合部の欠陥が少ないプレス
金型材が得られる。また、接合によって生じる残留応力
が低いので、ワイヤカット放電加工によって切断加工す
るときに工具部に割れを生じることがなく接合部の強度
も優れたプレス金型材が得られる。From Table 2, in all the examples of the present invention, the bonding rate was 100%, the residual stress was lower than that of Comparative Example 2 having no buffer portion, and cracking due to wire cutting did not occur. The shear strength of the joint is also high, and it is clear that this is an excellent mold material. As described above, according to the present invention, it is possible to obtain a press die material having few defects in the joint portion between the tool portion and the base metal portion. In addition, since the residual stress generated by joining is low, a press die material that does not cause cracks in the tool portion during cutting by wire-cut electric discharge machining and that has excellent joint strength can be obtained.
【００２０】実施例１の金型材から、ワイヤカット加工
により図２に示す金型１、２を切出した。本実施例によ
る金型１、２はそれぞれ台金部３、工具部４、および緩
衝部５を備え、かつ台金部３と緩衝部５および工具部４
と緩衝部５とはそれぞれろう材６によって真空ろう付け
されている。台金部３には、金型１、２をバックアップ
型７、８に取付けるためのボルト９のためのねじ孔１０
を備える。From the mold material of Example 1, molds 1 and 2 shown in FIG. 2 were cut out by wire cutting. The molds 1 and 2 according to the present embodiment each include a base metal part 3, a tool part 4 and a buffer part 5, and the base metal part 3, the buffer part 5 and the tool part 4 are provided.
The cushioning portion 5 and the cushioning portion 5 are vacuum brazed by the brazing material 6. The base metal part 3 has screw holes 10 for bolts 9 for attaching the molds 1 and 2 to the backup molds 7 and 8.
Is provided.
【００２１】本発明の実施例１の金型材から製作された
金型には、台金部と工具部の接合部におけるワイヤカッ
ト加工後の欠陥は認められなかった。また、本発明の金
型材から得られるプレス金型は、工具部が超硬合金から
なるので経済的であり、工具部および台金部の接合が健
全なので接合部の強度も優れる。また、台金部は鋼なの
でバックアップ型に金型を取付けるためのボルト孔を加
工することも容易である。In the mold manufactured from the mold material of Example 1 of the present invention, no defects were found in the joint between the base metal part and the tool part after wire cutting. Further, the press die obtained from the die material of the present invention is economical because the tool portion is made of cemented carbide, and the joining of the tool portion and the base metal portion is sound, so the strength of the joining portion is also excellent. Further, since the base metal part is made of steel, it is easy to form a bolt hole for attaching the mold to the backup mold.
【００２２】[0022]
【発明の効果】以上説明したように、本発明によれば、
ろう付けによって超硬合金の工具部と鋼製台金とを接合
することにより、接合欠陥が少なく、ワイヤカット加工
において超硬合金に割れなどの欠陥を生じることのな
い、経済的なプレス金型材とプレス金型を提供すること
ができる。As described above, according to the present invention,
By joining the cemented carbide tool part and the steel base metal by brazing, there are few joining defects, and an economical press die material that does not cause defects such as cracks in the cemented carbide during wire cutting. And press die can be provided.
【図１】本発明の実施例によるプレス金型材の部分断面
図である。FIG. 1 is a partial cross-sectional view of a press die material according to an embodiment of the present invention.
【図２】本発明の実施例によるプレス金型の分解斜視図
である。FIG. 2 is an exploded perspective view of a press die according to an embodiment of the present invention.
【図３】従来のプレス金型を示す分解斜視図である。FIG. 3 is an exploded perspective view showing a conventional press die.
１、２ 金型 ３ 台金部 ４ 工具部 ５ 緩衝部 ６ ろう材 ７、８ バックアップ型 ９ ボルト １０ ねじ孔 １１ 台金部 １２ ボルト孔 １３ ボルト １４ 工具部 １５ ねじ孔 １６、１７ リーマ孔 １８ セットピン 1, 2 Mold 3 Base metal part 4 Tool part 5 Buffer part 6 Brazing material 7, 8 Backup type 9 Bolt 10 Screw hole 11 Base metal part 12 Bolt hole 13 Bolt 14 Tool part 15 Screw hole 16, 17 Reamer hole 18 sets pin
Claims (2)
金部とを備えるプレス金型材において、前記工具部と前
記台金部との間に、銅、ニッケル、銅合金およびニッケ
ル合金のうちいづれか一種からなる緩衝部を設け、前記
工具部および前記台金部と前記緩衝部とをろう材によっ
て真空ろう付けすることを特徴とするプレス金型材。1. A press die material comprising a tool part made of cemented carbide and a base metal part made of steel, wherein copper, nickel, a copper alloy and a nickel alloy are provided between the tool part and the base metal part. A press die material, characterized in that a buffer portion made of any one of them is provided, and the tool portion, the base metal portion and the buffer portion are vacuum brazed with a brazing material.
金部とを備えるプレス金型材において、前記工具部と前
記台金部との間に、銅、ニッケル、銅合金およびニッケ
ル合金のうちいづれか一種からなる緩衝部を設け、前記
工具部および前記台金部と前記緩衝部とをろう材によっ
て真空ろう付けしてなるプレス金型材をワイヤカット放
電加工法によって加工することを特徴とするプレス金
型。2. A press die material comprising a tool part made of cemented carbide and a base metal part made of steel, wherein copper, nickel, a copper alloy and a nickel alloy are provided between the tool part and the base metal part. It is characterized in that a buffer part made of one of them is provided, and a press mold material formed by vacuum brazing the tool part, the base metal part and the buffer part with a brazing material is processed by a wire cut electric discharge machining method. Press mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11442395A JP2907754B2 (en) | 1995-05-12 | 1995-05-12 | Press mold material and press mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11442395A JP2907754B2 (en) | 1995-05-12 | 1995-05-12 | Press mold material and press mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08309454A true JPH08309454A (en) | 1996-11-26 |
| JP2907754B2 JP2907754B2 (en) | 1999-06-21 |
Family
ID=14637350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11442395A Expired - Fee Related JP2907754B2 (en) | 1995-05-12 | 1995-05-12 | Press mold material and press mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2907754B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2359505A (en) * | 2000-02-22 | 2001-08-29 | Honda Motor Co Ltd | Die assembly and method of manufacturing die assembly |
| EP2353763A1 (en) * | 2010-02-10 | 2011-08-10 | Siemens Aktiengesellschaft | A method of manufacturing a hot-gas component with a cooling channel by brazing a sintered sheet on a carrier ;corresponding hot-gas component |
-
1995
- 1995-05-12 JP JP11442395A patent/JP2907754B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2359505A (en) * | 2000-02-22 | 2001-08-29 | Honda Motor Co Ltd | Die assembly and method of manufacturing die assembly |
| GB2359505B (en) * | 2000-02-22 | 2003-09-24 | Honda Motor Co Ltd | Die assembly and method of manufacturing die assembly |
| EP2353763A1 (en) * | 2010-02-10 | 2011-08-10 | Siemens Aktiengesellschaft | A method of manufacturing a hot-gas component with a cooling channel by brazing a sintered sheet on a carrier ;corresponding hot-gas component |
| WO2011098507A1 (en) * | 2010-02-10 | 2011-08-18 | Siemens Aktiengesellschaft | A method of manufacturing a hot -gas component with a cooling channel by brazing a sintered sheet on a carrier; corresponding hot -gas component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2907754B2 (en) | 1999-06-21 |
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