JPH03234323A - Press die - Google Patents

Press die

Info

Publication number
JPH03234323A
JPH03234323A JP2708590A JP2708590A JPH03234323A JP H03234323 A JPH03234323 A JP H03234323A JP 2708590 A JP2708590 A JP 2708590A JP 2708590 A JP2708590 A JP 2708590A JP H03234323 A JPH03234323 A JP H03234323A
Authority
JP
Japan
Prior art keywords
punch
die
plate
base end
tip
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.)
Pending
Application number
JP2708590A
Other languages
Japanese (ja)
Inventor
Takayuki Sato
隆行 佐藤
Akira Ika
伊加 明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP2708590A priority Critical patent/JPH03234323A/en
Publication of JPH03234323A publication Critical patent/JPH03234323A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To allow even a punch deformed by surface hardening to be opposed concentrically to a clearance hole of a die by fixing a punch base end part to a punch plate in a state that the punch is positioned concentrically in the clearance hole. CONSTITUTION:From the upper part of a punch plate 11, a punch 13 is inserted into a punch supporting part 12, and its base end part 14 is supported by a punch supporting part 12. The tip part 15 of the punch 13 is inserted into a fitting hole 22 of a positioning plate 21. The positioning plate 21 is moved in the diameter direction of the punch 13 and the tip part 15 is opposed concentrically to the clearance hole 19 of a die 17. The punch 13 is positioned in a vertical state, and the base end part 15 becomes an inclined state in the inside of the punch supporting part 12. An end face in the base end part 14 of the punch 13 is ground and a backing plate 16 is allowed to abut on this working surface, and the punch 13 is fixed to the punch plate 11. In such a manner, such a problem that the hardened film is ground and eliminated can be obviated.

Description

【発明の詳細な説明】 [発明の目的コ (産業上の利用分野) この発明は、表面硬化処理を施したパンチを備えたプレ
ス金型に関する。
DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Field of Industrial Application) The present invention relates to a press mold equipped with a punch subjected to surface hardening treatment.

(従来の技術) プレス金型のパンチおよびダイは、合金鋼や超硬合金に
よって形成されているが、耐久性を向上させるために、
各種の表面硬化処理が施されている。例えば、処理温度
が600℃以下のものは、硬質クロムメツキ、窒化処理
、PVD (物理蒸着)処理等が挙げられる。また、処
理温度が600℃を越えるものは、CVD (化学蒸着
)処理、TDプロセス等が挙げられる。
(Prior art) Punches and dies of press molds are made of alloy steel or cemented carbide, but in order to improve durability,
Various surface hardening treatments are applied. For example, examples of treatments where the treatment temperature is 600° C. or lower include hard chrome plating, nitriding treatment, and PVD (physical vapor deposition) treatment. Further, examples of processes in which the processing temperature exceeds 600°C include CVD (chemical vapor deposition) processing and TD process.

一般に硬化処理温度が低いものは硬化膜と母材とが剥離
しやすく、処理温度が高いものは変形が大きい。特に、
プレス打ち抜き型では衝撃力に耐えるために剥離強度が
大きいことが望ましい。
Generally, when the curing temperature is low, the cured film and the base material are likely to separate, and when the curing temperature is high, the deformation is large. especially,
It is desirable that the press punching die has high peel strength in order to withstand impact force.

しかし、処理後にパンチとダイのクリアランスを保持す
るために仕上げ加工(研削加工)すると、変形量が硬化
膜厚より大きいため、母材が露出してしまう。
However, when finishing processing (grinding processing) is performed to maintain the clearance between the punch and die after processing, the amount of deformation is greater than the thickness of the cured film, so the base material is exposed.

特に、ファインブランキング金型のような精密厚板打抜
き型は、表面硬化処理で耐久性を向上させるのが困難で
ある。つまり、処理温度の低いCVD処理でTiCを2
〜5μmの厚さで形成しても衝撃により剥離が発生しや
すく、5〜15%の耐久性向上しか得られない。
In particular, it is difficult to improve the durability of precision thick plate punching dies such as fine blanking dies through surface hardening treatment. In other words, TiC can be removed by 2
Even if it is formed to a thickness of ~5 μm, peeling is likely to occur due to impact, and durability can only be improved by 5 to 15%.

第2図はプレス金型のパンチ1を示すもので、2は基端
部、3は先端部である。パンチ1は超硬合金によって形
成されており、このパンチ1を剥離強度の大きいCVD
処理により2〜5μmの厚さでTiC膜を形成すると、
処理(含焼入れ・焼戻し)により変形(曲り)が先端部
3で7〜lOμmあった。
FIG. 2 shows a punch 1 of a press mold, in which 2 is a base end and 3 is a tip. The punch 1 is made of cemented carbide, and the punch 1 is made by CVD with high peel strength.
When a TiC film is formed with a thickness of 2 to 5 μm by processing,
Due to the treatment (quenching and tempering), the tip portion 3 was deformed (bending) by 7 to 10 μm.

このパンチ1の基端部をプレス金型のパンチプレートに
固定し、先端部3をダイ4の逃げ穴5に対向させると、
つまり、第3図に示すように、パンチ1の基端部2をパ
ンチプレート7のパンチ支持部7aに挿入固定し、パン
チ1の基端tI52を基準として組み立てると、先端部
3の軸心とダイ4の逃げ穴5の軸心とが偏心し、プレス
打ち抜きが不可能となる。そこで、パンチ1の変形を修
正するために、第4図に示すように、先端部3を研削加
工によって除去すると、硬化膜8が研削除去(研削修正
部a)されて母材が露出(母材露出部b)してしまう。
When the base end of this punch 1 is fixed to the punch plate of a press die and the tip end 3 is opposed to the escape hole 5 of the die 4,
That is, as shown in FIG. 3, when the proximal end 2 of the punch 1 is inserted and fixed into the punch support part 7a of the punch plate 7 and assembled with the proximal end tI52 of the punch 1 as a reference, the axis of the distal end 3 and The axis of the escape hole 5 of the die 4 is eccentric, making press punching impossible. Therefore, in order to correct the deformation of the punch 1, the tip 3 is removed by grinding as shown in FIG. Material exposed part b).

しかも、パンチ1とダイ5の逃げ穴6との間に大きなり
リアランスCが生じてしまうという問題がある。
Moreover, there is a problem in that a large clearance C is generated between the punch 1 and the escape hole 6 of the die 5.

(発明が解決しようとする課題) 前述のように、従来のパンチは、剥離強度の大きい表面
硬化処理をすると、処理(含焼入れ・焼戻し)により変
形(曲り)が発生し、この変形を研削加工によって除去
すると、硬化膜が研削除去されてしまうという問題があ
り、膜厚より小さい仕上げ加工量でパンチとして使用す
ることが望まれている。
(Problems to be Solved by the Invention) As mentioned above, when conventional punches are subjected to surface hardening treatment with high peel strength, deformation (bending) occurs due to the treatment (quenching and tempering), and this deformation is removed by grinding. If the cured film is removed by polishing, there is a problem that the cured film will be removed by polishing, so it is desired to use it as a punch with a finishing amount smaller than the film thickness.

この発明は、前記事情に着目してなされたもので、その
目的とするところは、表面硬化処理によって変形したパ
ンチであっても、ダイの逃げ穴と同心的に対向させるこ
とができるプレス金型を提供することにある。
This invention was made with attention to the above-mentioned circumstances, and its purpose is to form a press die that can be made to face concentrically with the escape hole of the die even if the punch is deformed by surface hardening treatment. Our goal is to provide the following.

[発明の構成コ (課題を解決するための手段及び作用)この発明は、前
記目的を達成するために、表面硬化処理を施したパンチ
の先端部を軸方向にスライド自在に支持する位置決めプ
レートと、前記パンチを前記ダイの逃げ穴に同心的に位
置決めした状態でパンチの基端部を前記パンチプレート
に固定する固定手段とから構成さる装 置決めプレートによりパンチの基端部を移動させて先端
部をダイの逃げ穴に同心的に位置決めし、つぎに前記パ
ンチの基端部を前記パンチプレートに固定する。
[Structure of the Invention (Means and Effects for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a positioning plate that supports the tip of a punch subjected to a surface hardening treatment so as to be slidable in the axial direction. and a fixing means for fixing the proximal end of the punch to the punch plate while the punch is positioned concentrically in the escape hole of the die, and the proximal end of the punch is moved by a fixing means to fix the proximal end of the punch to the punch plate. is positioned concentrically in the relief hole of the die, and then the proximal end of the punch is fixed to the punch plate.

(実施例) 以下、この発明の一実施例を図面に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

第1図はプレス金型を示すもので、11はパンチプレー
トであり、段付き穴からなるパンチ支持部12が設けら
れている。パンチ支持112にはパンチ13の基端部1
4が嵌合支持され、先端部15はパンチプレート11の
下方に突出している。
FIG. 1 shows a press die, in which 11 is a punch plate, and a punch support portion 12 consisting of a stepped hole is provided. The base end 1 of the punch 13 is attached to the punch support 112.
4 are fitted and supported, and the tip portion 15 protrudes below the punch plate 11.

このパンチ13は剥離強度の大きいCVD処理により2
〜5μmの厚さでTiC膜を形成され、処3i!(含焼
入れ・焼戻し)により変形(曲り)が生じている。前記
パンチ支持部12はパンチ13の基端部14より大径に
形成され、基端部14とパンチ支持部12とにガタを持
たせているため、先端部15を垂直状態に位置決めした
ときには、基端部14がパンチ支持部12の内部で傾い
た状態にある。したがって、パンチ13の基端部14に
おける端面を研削加工し、この加工面14aにバッキン
グプレート16を当接してパンチ13をパンチプレート
11に固定している。
This punch 13 is made of 2
A TiC film was formed with a thickness of ~5 μm, and the area 3i! Deformation (bending) has occurred due to (quenching and tempering). The punch support portion 12 is formed to have a larger diameter than the base end portion 14 of the punch 13, and since the base end portion 14 and the punch support portion 12 have play, when the tip portion 15 is positioned vertically, The base end portion 14 is in an inclined state inside the punch support portion 12. Therefore, the end surface of the base end 14 of the punch 13 is ground, and the punch 13 is fixed to the punch plate 11 by abutting the backing plate 16 on this processed surface 14a.

また、ダイ17はダイバッキングプレート18により支
持され、このダイ17には前記パンチ13の先端部15
と対向する逃げ穴19が穿設されている。そして、この
ダイ17の上面に被加工材20を支持しており、この被
加工材20は位置決めプレート21によってダイ17の
上面に押え付けられている。位置決めプレート21はパ
ンチ13の径方向に移動自在であり、この板面にはパン
チ13の先端部15にその軸方向にスライド自在に嵌合
する嵌合穴22が穿設されている。そして、パンチ13
の先端部15はダイ17の逃げ穴19に同心的に対向し
ている。
The die 17 is supported by a die backing plate 18, and the die 17 has a tip 15 of the punch 13.
An escape hole 19 facing the is bored. A workpiece 20 is supported on the upper surface of the die 17, and the workpiece 20 is pressed against the upper surface of the die 17 by a positioning plate 21. The positioning plate 21 is movable in the radial direction of the punch 13, and a fitting hole 22 is bored in the plate surface to fit into the tip 15 of the punch 13 so as to be slidable in the axial direction thereof. And punch 13
The tip 15 of the die 17 is concentrically opposed to the relief hole 19 of the die 17.

次に、前述のように構成されたプレス金型の組立て順序
について説明する。パンチプレート11の上方からパン
チ13をパンチ支持部12に挿入し、その基端部14を
パンチ支持部12に支持する。そして、パンチ13の先
端部15を位置決めプレート21の嵌合穴22に挿入す
る。この状態においては、パンチ13が変形しているた
め、先端部15はダイ17の逃げ穴1つに対して大きく
偏心している。ところが、パンチ支持部12にパンチ1
3の基端部14が移動自在であるため、位置決めプレー
ト21をパンチ13の径方向に移動して先端部15をダ
イ17の逃げ穴19に同心的に対向させる。先端部15
を逃げ穴19に同心的に対向させると、パンチ13は垂
直状態に位置決めされ、基端部14がパンチ支持部12
の内部で傾いた状態になる。そこで、パンチ13の基端
部14における端面を研削加工し、この加工面14aに
バッキングプレート16を当接してパンチ13をパンチ
プレート11に固定する。
Next, the assembly order of the press die configured as described above will be explained. A punch 13 is inserted into the punch support 12 from above the punch plate 11, and its base end 14 is supported by the punch support 12. Then, the tip 15 of the punch 13 is inserted into the fitting hole 22 of the positioning plate 21. In this state, since the punch 13 is deformed, the tip end 15 is largely eccentric with respect to one escape hole of the die 17. However, the punch 1 is not attached to the punch support portion 12.
Since the proximal end 14 of the punch 13 is movable, the positioning plate 21 is moved in the radial direction of the punch 13 so that the tip 15 faces the relief hole 19 of the die 17 concentrically. Tip part 15
When the punch 13 is positioned concentrically with the escape hole 19, the punch 13 is positioned vertically, and the base end 14 is aligned with the punch support 12.
becomes tilted inside. Therefore, the end surface of the base end 14 of the punch 13 is ground, and the backing plate 16 is brought into contact with this processed surface 14a to fix the punch 13 to the punch plate 11.

このように、パンチ13をその先端部15を基準にして
ダイ17の逃げ穴19に同心的に対向させることによっ
て、パンチ13が表面硬化処理によって変形していても
、その変形を研削加工によって除去する必要がなく、従
来のように、硬化膜が研削除去されてしまうという問題
を解消できる。
In this way, by arranging the punch 13 to coaxially face the escape hole 19 of the die 17 with its tip 15 as a reference, even if the punch 13 is deformed due to surface hardening, the deformation can be removed by grinding. There is no need to do this, and the conventional problem of the cured film being removed by polishing can be solved.

[発明の効果] 以上説明したように、この発明によれば、表面硬化処理
を施したパンチの先端部を軸方向にスライド自在に支持
する位置決めプレートによりパンチの基端部を移動させ
て先端部をダイの逃げ穴に同心的に位置決めすることに
より、パンチが表面硬化処理によって変形していても、
硬化膜厚さ以上に、その変形を研削加工によって除去す
る必要がなく、従来のように、硬化膜が研削除去されて
しまうという問題を解消できる。
[Effects of the Invention] As explained above, according to the present invention, the proximal end of the punch is moved by the positioning plate that supports the distal end of the punch subjected to surface hardening treatment so as to be slidable in the axial direction. By positioning the punch concentrically with the escape hole of the die, even if the punch is deformed by surface hardening,
There is no need to remove the deformation by grinding more than the thickness of the cured film, and the conventional problem of the cured film being removed by grinding can be solved.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例を示すプレス金型の縦断正
面図、第2図は従来のパンチの側面図、第3図は従来の
パンチをプレス金型に組み込んだ状態の縦断正面図、第
4図はパンチを研削加工した状態の説明図である。 11・・・パンチングプレート、13・・・パンチ、1
4・・・基端部、15・・・先端部、17・・・ダイ、
19・・・逃げ穴、21・・・位置決めプレート。
Fig. 1 is a longitudinal sectional front view of a press die showing an embodiment of the present invention, Fig. 2 is a side view of a conventional punch, and Fig. 3 is a longitudinal sectional front view of a conventional punch assembled into a press die. , FIG. 4 is an explanatory view of the punch after being ground. 11... Punching plate, 13... Punch, 1
4... Base end part, 15... Tip part, 17... Die,
19...Escape hole, 21...Positioning plate.

Claims (1)

【特許請求の範囲】[Claims] 表面硬化処理を施したパンチの基端部をパンチプレート
に固定し、このパンチの先端部を被加工材を支持するダ
イの逃げ穴に対向させたプレス金型において、前記パン
チの先端部を軸方向にスライド自在に支持した状態で、
パンチプレートに対してパンチの基端部を移動して先端
部を前記ダイの逃げ穴に同心的に位置決めする位置決め
プレートと、前記パンチを前記ダイの逃げ穴に同心的に
位置決めした状態でパンチの基端部を前記パンチプレー
トに固定する固定手段とを具備したことを特徴とするプ
レス金型。
The base end of a punch that has been subjected to surface hardening treatment is fixed to a punch plate, and the tip of the punch is placed in a press die that faces the relief hole of the die that supports the workpiece. While supported so that it can slide freely in the direction,
a positioning plate that moves the base end of the punch relative to the punch plate and positions the tip end concentrically with the relief hole of the die; and a positioning plate that positions the punch concentrically with the relief hole of the die; A press mold comprising: a fixing means for fixing a base end portion to the punch plate.
JP2708590A 1990-02-08 1990-02-08 Press die Pending JPH03234323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2708590A JPH03234323A (en) 1990-02-08 1990-02-08 Press die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2708590A JPH03234323A (en) 1990-02-08 1990-02-08 Press die

Publications (1)

Publication Number Publication Date
JPH03234323A true JPH03234323A (en) 1991-10-18

Family

ID=12211241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2708590A Pending JPH03234323A (en) 1990-02-08 1990-02-08 Press die

Country Status (1)

Country Link
JP (1) JPH03234323A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005285026A (en) * 2004-03-31 2005-10-13 Shindengen Mechatronics Co Ltd Punch solenoid
CN103692488A (en) * 2013-12-05 2014-04-02 中国大冢制药有限公司 Easy-to-tear film cutting die for soft bag infusion product filling and sealing machines
CN107900196A (en) * 2017-10-22 2018-04-13 成都具鑫机械设备有限公司 Vehicle beam longitudinal beam connecting piece punching die

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005285026A (en) * 2004-03-31 2005-10-13 Shindengen Mechatronics Co Ltd Punch solenoid
CN103692488A (en) * 2013-12-05 2014-04-02 中国大冢制药有限公司 Easy-to-tear film cutting die for soft bag infusion product filling and sealing machines
CN107900196A (en) * 2017-10-22 2018-04-13 成都具鑫机械设备有限公司 Vehicle beam longitudinal beam connecting piece punching die

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