JPH0654423U - Burring mold - Google Patents
Burring moldInfo
- Publication number
- JPH0654423U JPH0654423U JP60593U JP60593U JPH0654423U JP H0654423 U JPH0654423 U JP H0654423U JP 60593 U JP60593 U JP 60593U JP 60593 U JP60593 U JP 60593U JP H0654423 U JPH0654423 U JP H0654423U
- Authority
- JP
- Japan
- Prior art keywords
- die
- hole
- punch
- movable die
- burring
- 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
Links
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
(57)【要約】
【目的】 １回のプレス工程で形状および寸法精度の安
定したバーリング孔加工を行うことのできるようにす
る。
【構成】 金属板Ｐを載置する下型１と昇降駆動される
パンチ２とからなり、下型１を固定ダイ４とこれに一定
範囲で上下スライド可能に内嵌支持された可動ダイ５と
で構成し、固定ダイ４には可動ダイ５を内嵌する透孔６
を形成するとともに、可動ダイ５の上端中央に下孔形成
用の透孔９を形成し、可動ダイ５をその上端が固定ダイ
４の上端と面一あるいは略面一となるスライド上限まで
弾性体８によって上昇付勢し、パンチ２を、可動ダイ５
の透孔９に嵌入可能な小径の打抜きパンチ部２ａと、固
定ダイ４の透孔６に同芯に挿入されるバーリング孔形成
用の大径部２ｂと、これらを繋ぐテーパーガイド部２ｃ
とを備えた段付き形状に構成する。
(57) [Abstract] [Purpose] To make it possible to perform burring hole machining with stable shape and dimensional accuracy in a single pressing process. [Structure] A lower die 1 on which a metal plate P is placed and a punch 2 which is driven to move up and down. The lower die 1 is a fixed die 4 and a movable die 5 internally supported by the fixed die 4 so as to be vertically slidable within a certain range. The fixed die 4 has a through hole 6 into which the movable die 5 is fitted.
And a through hole 9 for forming a pilot hole is formed at the center of the upper end of the movable die 5, and the movable die 5 is made of an elastic material up to a slide upper limit where the upper end is flush or substantially flush with the upper end of the fixed die 4. 8, the punch 2 is moved upward and the movable die 5 moves.
Punching punch portion 2a having a small diameter which can be fitted into the through hole 9 of the fixed die 4, a large diameter portion 2b for forming a burring hole which is coaxially inserted into the through hole 6 of the fixed die 4, and a taper guide portion 2c which connects these.
And a stepped shape with.
Description
【０００１】[0001]
本考案は、薄い金属板にバーリング孔を形成する場合に利用するバーリング加 工用金型に関する。 The present invention relates to a burring die for use in forming a burring hole in a thin metal plate.
【０００２】[0002]
従来、薄い金属板にバーリング孔を形成する手段としては、 （ａ） 下孔加工と拡径バーリング加工を行う手段 （ｂ） 打ち抜きプレスにおける下型の孔を、これに対するパンチの外径より 大きく設定して行うプレス方式 が一般に知られている。 Conventionally, as a means for forming a burring hole in a thin metal plate, (a) a means for performing a pre-drilling process and an expanding burring process (b) a lower die hole in a punching press is set to be larger than the outer diameter of the punch The press method that is performed is generally known.
【０００３】[0003]
しかし、上記従来手段（ａ）によると、下孔加工とバーリング加工の２工程を 必要とするために作業能率が低くなる欠点があり、また、従来手段（ｂ）による と、バーリングされたフランジ部の形状がプレス条件によって変化しやすい欠点 があった。 However, according to the conventional means (a), there is a drawback that the work efficiency is lowered because two steps of the pilot hole processing and the burring processing are required, and according to the conventional means (b), the burred flange portion is used. However, there was a drawback in that the shape of was likely to change depending on the press conditions.
【０００４】 本考案は、１回のプレス工程で安定したバーリング加工を行うことのできるバ ーリング加工用金型を提供することを目的とする。An object of the present invention is to provide a burring die which can perform stable burring in one pressing step.
【０００５】[0005]
上記目的を達成するために、本考案のバーリング加工用金型は、金属板を載置 する下型と昇降駆動されるパンチとからなり、下型を固定ダイとこれに一定範囲 で上下スライド可能に内嵌支持された可動ダイとで構成し、固定ダイには可動ダ イを内嵌する透孔を形成するとともに、可動ダイの上端中央に下孔形成用の透孔 を形成し、可動ダイをその上端が固定ダイの上端と面一あるいは略面一となるス ライド上限まで弾性体によって上昇付勢し、パンチを、可動ダイの透孔に嵌入可 能な小径の打抜きパンチ部と、固定ダイの透孔に同芯に挿入されるバーリング孔 形成用の大径部と、これらを繋ぐテーパーガイド部とを備えた段付き形状に構成 した。 In order to achieve the above object, the burring die of the present invention comprises a lower die on which a metal plate is placed and a punch which is driven up and down. The lower die can be vertically slid within a fixed die and within a certain range. The movable die has a movable die that is internally fitted and supported on the fixed die.The fixed die has a through hole for internally fitting the movable die, and a through hole for forming a pilot hole is formed at the center of the upper end of the movable die. The upper part of the punch is elastically urged up to the upper limit of the slide where the upper end of the punch is flush with or substantially flush with the upper end of the fixed die. The stepped shape was provided with a large diameter portion for forming a burring hole that is inserted concentrically with the through hole of the die, and a taper guide portion that connects these.
【０００６】[0006]
上記構成によると、可動ダイが上限まで上昇付勢した状態で、固定ダイ上の金 属板を載置セットしてパンチを下降駆動すると、先ず、パンチの打抜きパンチ部 が可動ダイの透孔に嵌入されることで、小径の下孔が打ち抜き加工され、さらに パンチを下降駆動することで、パンチに押圧された可動ダイが上昇付勢力に抗し て下降され、これに伴って金属板における下孔がテーパーガイド部によって案内 されながら押し拡げられ、さらにパンチの下降が進むと、パンチの大径部が固定 ダイの透孔に挿入されて、この大径部と透孔の間に金属板が押し曲げ変形され、 これによって内径がパンチの大径部の外径に等しいバーリング孔が形成される。 According to the above configuration, when the movable die is urged to the upper limit and the metal plate on the fixed die is placed and set and the punch is driven downward, first, the punching punch section of the punch becomes the through hole of the movable die. When the punch is inserted, the small hole is punched, and by further driving the punch downward, the movable die pressed by the punch is lowered against the upward biasing force. As the hole is expanded while being guided by the taper guide part, and the punch further descends, the large diameter part of the punch is inserted into the through hole of the fixed die, and the metal plate is inserted between this large diameter part and the through hole. The burring hole is formed by being pressed and bent, and the inner diameter of the burring hole is equal to the outer diameter of the large diameter portion of the punch.
【０００７】[0007]
図１に本考案に係るバーリング加工用金型の縦断面が示されている。 FIG. 1 shows a vertical section of a burring die according to the present invention.
【０００８】 このバーリング加工用金型は、プレス機械のベース上に固定される下型１と、 駆動ラム等の昇降駆動手段に装着されるパンチ２とからなる。This burring die comprises a lower die 1 fixed on the base of a press machine, and a punch 2 attached to a lifting drive means such as a drive ram.
【０００９】 下型１は、ベース３と、これの上面に固定連結された固定ダイ４と、これに上 下スライド可能に内嵌装着された可動ダイ５とから構成され、固定ダイ４に形成 された段付きの透孔６に段付きスリーブ状の可動ダイ５が下方より嵌入され、透 孔６の下向き段部６ａによって可動ダイ５の上限が当接規制された状態で、固定 ダイ４の上面と可動ダイ５の上面とが面一、あるいは可動ダイ５の上面が固定ダ イ４の上面より僅かに下がった状態となるように設定されるとともに、可動ダイ ５に螺入した複数のボルト７のそれぞに外嵌装着した圧縮コイルバネ（弾性体） ８によって可動ダイ５が上昇付勢されている。また、可動ダイ５の上面中央には 、小径の透孔９が形成されている。The lower die 1 is composed of a base 3, a fixed die 4 fixedly connected to the upper surface of the base 3, and a movable die 5 that is fitted in the base 3 so as to be slidable up and down. The stepped sleeve-shaped movable die 5 is fitted into the stepped through hole 6 formed from below, and the upper limit of the movable die 5 is restricted by the downward stepped portion 6a of the through hole 6 so that the fixed die 4 is fixed. The upper surface of the movable die 5 and the upper surface of the movable die 5 are flush with each other, or the upper surface of the movable die 5 is set slightly lower than the upper surface of the fixed die 4, and a plurality of bolts screwed into the movable die 5 are set. The movable die 5 is biased upward by a compression coil spring (elastic body) 8 which is externally fitted and attached to each of the seven. A small-diameter through hole 9 is formed in the center of the upper surface of the movable die 5.
【００１０】 他方、パンチ２には、可動ダイ５の透孔９に内嵌可能な小径の打抜きパンチ部 ２ａと、固定ダイ４の透孔６に同芯に挿入可能なバーリング孔形成用の大径部２ ｂと、これらを繋ぐテーパーガイド部２ｃとを備えた先細りの段付き形状に構成 されている。On the other hand, the punch 2 has a small-diameter punching punch portion 2 a which can be fitted in the through hole 9 of the movable die 5 and a large burring hole which can be coaxially inserted into the through hole 6 of the fixed die 4. It has a tapered stepped shape including a diameter portion 2b and a taper guide portion 2c connecting them.
【００１１】 次に、以上のように構成されたバーリング加工用金型を用いてのバーリング孔 加工の手順を説明する。Next, a procedure of burring hole processing using the burring die set as described above will be described.
【００１２】 （１） 図１中の仮想線で示すように、加工される金属板Ｐを下型１の上に載 置する。(1) As shown by the phantom line in FIG. 1, the metal plate P to be processed is placed on the lower die 1.
【００１３】 （２） 図２に示すように、パンチ２を下降駆動させることによって、小径の 打抜きパンチ部２ａが上昇位置にある可動ダイ５の透孔９に内嵌して、金属板Ｐ に小径の下孔ｈが打ち抜き形成される。(2) As shown in FIG. 2, when the punch 2 is driven downward, the punching punch portion 2a having a small diameter is fitted in the through hole 9 of the movable die 5 in the raised position, so that the metal plate P 1 A small-diameter pilot hole h is formed by punching.
【００１４】 （３） さらにパンチ２を下降駆動させると、図３に示すように、パンチ２に 押圧されて可動ダイ５が圧縮コイルバネ８に抗して下降されるとともに、パンチ ２のテーパーガイド部２ｃによって下孔ｈが押し拡げられながら下方に曲げ変形 されてゆく。(3) When the punch 2 is further driven downward, as shown in FIG. 3, the movable die 5 is pushed down by the punch 2 and is lowered against the compression coil spring 8, and the taper guide portion of the punch 2 is moved. The prepared hole h is expanded and bent downward by 2c.
【００１５】 （４） パンチ２の下降がさらに進むと、図４に示すように、パンチ２の大径 部２ｂが固定ダイ４の透孔６に挿入され、これによって下孔ｈがさらに押し拡げ られて大径部２ｂと透孔６との間に大きく下方に曲げ変形され、内径がパンチの 大径部２ｂの外径に等しいフランジを有するバーリング孔が完成する。(4) When the punch 2 further descends, as shown in FIG. 4, the large diameter portion 2b of the punch 2 is inserted into the through hole 6 of the fixed die 4, whereby the pilot hole h is further expanded. The burring hole having a flange whose inner diameter is equal to the outer diameter of the large diameter portion 2b of the punch is completed by being bent and deformed largely downward between the large diameter portion 2b and the through hole 6.
【００１６】 〔他の実施例〕 図５に示すように、可動ダイ５を上昇付勢する弾性体８としてゴムスリーブを 使用することもできる。[Other Embodiments] As shown in FIG. 5, a rubber sleeve can be used as the elastic body 8 for urging the movable die 5 upward.
【００１７】[0017]
以上の説明で明らかなように、本考案によれば、１回のプレス操作によって下 孔加工とバーリング加工とを一挙に行うことができて作業性を高めることができ るようになった。 As is clear from the above description, according to the present invention, the pilot hole processing and the burring processing can be performed at once by one pressing operation, and the workability can be improved.
【００１８】 しかも、下孔加工が可動ダイとパンチの打抜きパンチ部とを用いて精度よく行 い、かつ、引き続くバーリング加工もパンチのテーパーガイド部および大径部を 用いて精度よく行うので、形状および寸法精度の安定したバーリング孔を円滑に 形成することができるようになった。Moreover, since the pilot hole machining is performed accurately by using the movable die and the punching punch portion of the punch, and the subsequent burring is also performed accurately by using the taper guide portion and the large diameter portion of the punch, And, it became possible to smoothly form burring holes with stable dimensional accuracy.
【図１】本考案に係るバーリング加工用金型の初期セッ
ト状態の縦断面図FIG. 1 is a vertical cross-sectional view of an initial set state of a burring die according to the present invention.
【図２】下孔加工工程における縦断面図FIG. 2 is a vertical cross-sectional view of the pilot hole processing step.
【図３】バーリング加工工程の初期における縦断面図FIG. 3 is a vertical sectional view in the initial stage of the burring process.
【図４】バーリング加工工程の完了時における縦断面図FIG. 4 is a vertical sectional view at the completion of the burring process.
【図５】他の実施例の縦断面図FIG. 5 is a vertical sectional view of another embodiment.
１ 下型 ２ パンチ ２ａ 打抜きパンチ部 ２ｂ 大径部 ２ｃ テーパーガイド部 ４ 固定ダイ ５ 可動ダイ ６ 透孔 ８ 弾性体 ９ 透孔 Ｐ 金属板 1 Lower die 2 Punch 2a Punching punch part 2b Large diameter part 2c Tapered guide part 4 Fixed die 5 Movable die 6 Through hole 8 Elastic body 9 Through hole P Metal plate
Claims (1)
降駆動されるパンチ（２）とからなり、下型（１）を固
定ダイ（４）とこれに一定範囲で上下スライド可能に内
嵌支持された可動ダイ（５）とで構成し、固定ダイ
（４）には可動ダイ（５）を内嵌する透孔（６）を形成
するとともに、可動ダイ（５）の上端中央に下孔形成用
の透孔（９）を形成し、可動ダイ（５）をその上端が固
定ダイ（４）の上端と面一あるいは略面一となるスライ
ド上限まで弾性体（８）によって上昇付勢し、パンチ
（２）を、可動ダイ（５）の透孔（９）に嵌入可能な小
径の打抜きパンチ部（２ａ）と、固定ダイ（４）の透孔
（６）に同芯に挿入されるバーリング孔形成用の大径部
（２ｂ）と、これらを繋ぐテーパーガイド部（２ｃ）と
を備えた段付き形状に構成してあることを特徴とするバ
ーリング加工用金型。1. A lower die (1) on which a metal plate (P) is placed and a punch (2) which is driven up and down. The lower die (1) is fixed to a fixed die (4) and is vertically moved within a certain range. A movable die (5) slidably fitted and supported, and a fixed die (4) is formed with a through hole (6) into which the movable die (5) is fitted. A through hole (9) for forming a pilot hole is formed in the center of the upper end, and the movable die (5) is made up of an elastic body (8) up to a slide upper limit where the upper end is flush or substantially flush with the upper end of the fixed die (4). The punch (2) is urged upwardly by the punching hole (2a) having a small diameter which can be fitted into the through hole (9) of the movable die (5) and the through hole (6) of the fixed die (4). A stepped shape provided with a large diameter portion (2b) for forming a burring hole to be inserted into the core and a taper guide portion (2c) connecting these. A die for burring that is characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60593U JPH0654423U (en) | 1993-01-13 | 1993-01-13 | Burring mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60593U JPH0654423U (en) | 1993-01-13 | 1993-01-13 | Burring mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0654423U true JPH0654423U (en) | 1994-07-26 |
Family
ID=11478371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60593U Pending JPH0654423U (en) | 1993-01-13 | 1993-01-13 | Burring mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0654423U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101046038B1 (en) * | 2003-12-29 | 2011-07-01 | 주식회사 포스코 | Piercing method in press hardened part manufacturing process |
| WO2011145506A1 (en) * | 2010-05-17 | 2011-11-24 | 日新製鋼株式会社 | Method for welding coated steel plate |
| CN107838271A (en) * | 2017-12-18 | 2018-03-27 | 天津市北方高效石化设备制造有限公司 | Automatic trapezoidal solid valve mould |
| CN110340208A (en) * | 2019-08-05 | 2019-10-18 | 江苏拢研机械有限公司 | A kind of workpiece hole punched device |
-
1993
- 1993-01-13 JP JP60593U patent/JPH0654423U/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101046038B1 (en) * | 2003-12-29 | 2011-07-01 | 주식회사 포스코 | Piercing method in press hardened part manufacturing process |
| WO2011145506A1 (en) * | 2010-05-17 | 2011-11-24 | 日新製鋼株式会社 | Method for welding coated steel plate |
| CN102917832A (en) * | 2010-05-17 | 2013-02-06 | 日新制钢株式会社 | Method for welding coated steel plate |
| AU2011256544B2 (en) * | 2010-05-17 | 2014-11-06 | Nisshin Steel Co., Ltd. | Method for welding coated steel plate |
| CN107838271A (en) * | 2017-12-18 | 2018-03-27 | 天津市北方高效石化设备制造有限公司 | Automatic trapezoidal solid valve mould |
| CN110340208A (en) * | 2019-08-05 | 2019-10-18 | 江苏拢研机械有限公司 | A kind of workpiece hole punched device |
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