JPS60227930A - Burring working method - Google Patents
Burring working methodInfo
- Publication number
- JPS60227930A JPS60227930A JP8432484A JP8432484A JPS60227930A JP S60227930 A JPS60227930 A JP S60227930A JP 8432484 A JP8432484 A JP 8432484A JP 8432484 A JP8432484 A JP 8432484A JP S60227930 A JPS60227930 A JP S60227930A
- Authority
- JP
- Japan
- Prior art keywords
- burring
- punch
- straight
- ironing
- diameter
- 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
- Punching Or Piercing (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はプレス金型でのバーリング加工方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a burring method using a press die.
従来例の構成とその問題点
以下に従来例を第１，２図にもとすいて説明する。第１
図はバーリング加工前を示し、第２図はバーリング加工
終了時下死点状態を示す。The structure of the conventional example and its problems will be explained below with reference to FIGS. 1 and 2. 1st
The figure shows the state before the burring process, and FIG. 2 shows the bottom dead center state at the end of the burring process.
一般に板金のバーリング加工は、被加工材１に前もって
小さな下穴２をあけておき、この下穴２の中心軸と同軸
で、下穴の直径より大きな直径のパンチ３とダイ４でハ
リ出す加工である。なお６はストリッパを示す。In general, sheet metal burring is a process in which a small pilot hole 2 is drilled in advance in the workpiece 1, and the punch 3 and die 4, which are coaxial with the center axis of the pilot hole 2 and have a larger diameter than the diameter of the pilot hole, are used to burr the material. It is. Note that 6 indicates a stripper.
この場合、バーリング成形部６の高さｈをより高く出す
には、バーリング下穴の抜き穴を小さくする方法、又は
バーリングパンチとダイ穴との隙間を小さくして板厚減
少率を大きくする方法があった。しかし前者の方法はバ
ーリングの先端部ワレ発生とかバーリング加工可否、及
び下穴抜きポンチの強度面等の問題があった。又後者の
方法は製品面でのバーリング強度確保及び減少率の限界
等の欠点を有していた。In this case, in order to increase the height h of the burring forming part 6, there is a method of making the hole in the burring pilot hole smaller, or a method of increasing the plate thickness reduction rate by reducing the gap between the burring punch and the die hole. was there. However, the former method has problems such as cracking of the tip of the burring, difficulty in burring processing, and strength of the pilot hole punch. Furthermore, the latter method has drawbacks such as limited burring strength and limited reduction rate in terms of products.
発明の目的
本発明は前述の問題点を解消するもので、下穴抜きポン
チ径及びバーリング加工後の製品板厚の減少率が従来と
同条件でも、製品のバーリング高さが高くなるようにし
た加工方法を提供するものである。Purpose of the Invention The present invention solves the above-mentioned problems, and makes it possible to increase the burring height of the product even if the pilot hole punch diameter and the reduction rate of the product plate thickness after burring are the same as before. This provides a processing method.
発明の構成
本発明のバーリング加工方法は導入先端部と、導入先端
部に連なる導入先端部に近ずくにつれ直径が小さくなる
中心軸に平行な複数のストレート部と前記ストレート部
を滑らかな連なる曲線部よりなるバーリング加工部と、
バーリング加工部に連なるパンチプレートに保持圧入さ
れるストレート部を有するパンチを用いて、前記パンチ
の導入先端部方向より、順次しごき径を増しつつしごき
を行うもので、１ストロークでバーリング高さの高い寸
法が得られるものである。Structure of the Invention The burring method of the present invention includes an introduction tip, a plurality of straight sections connected to the introduction tip and parallel to a central axis whose diameter decreases as it approaches the introduction tip, and a curved section that smoothly connects the straight sections. The burring processing part consists of
Using a punch with a straight part that is held and press-fitted into a punch plate connected to the burring processing part, ironing is performed while gradually increasing the ironing diameter from the direction of the introduction tip of the punch, and a high burring height is achieved with one stroke. The dimensions can be obtained.
実施例の説明
以下、本発明の一実施例を第３図〜第６図により説明す
る。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.
第３図は、多段バーリングポンチの正面図であシ、多段
バーリングポンチは、バーリング加工工具部７，８の異
なる外径寸法ｄ１．ｄ２を有し、ｄｌ＜〜である。工具
部７の有効長さ１１は製品のバーリング高さ以上、そし
て工具部８の有効長さ１２は１１〈４２である。又工具
部７と８との間の１３は工具部７と８との径段差をなめ
らかな直線で結ぶ。又バーリングパンチの先端肩部Ｒは
従来パンチと同様に、なめらかなＲにする。そして９は
バーリングパンチの保持圧入部であり、１０は抜は取め
のつばである。以上の上記の段付きバーリングパンチを
用い１ストロークでバーリング部を再度バーリング加工
をして、バーリング部の板厚減少率を大きくする。FIG. 3 is a front view of a multi-stage burring punch, and the multi-stage burring punch has burring tool parts 7 and 8 having different outer diameter dimensions d1. d2, and dl<~. The effective length 11 of the tool part 7 is greater than or equal to the burring height of the product, and the effective length 12 of the tool part 8 is 11<42. Further, 13 between the tool parts 7 and 8 connects the radial step between the tool parts 7 and 8 with a smooth straight line. Also, the tip shoulder R of the burring punch should have a smooth radius, similar to the conventional punch. Further, 9 is a holding press-fitting part of the burring punch, and 10 is a retaining collar. Using the stepped burring punch described above, the burring portion is burred again in one stroke to increase the plate thickness reduction rate of the burring portion.
又、第４図において、１１は被加工材料、１２は段付き
バーリングパンチ、１３はバーリングダイ、１４はスト
リッパーである。Further, in FIG. 4, 11 is a workpiece material, 12 is a stepped burring punch, 13 is a burring die, and 14 is a stripper.
以上のように構成されたバーリング加工について、以下
にその動作を説明する。The operation of the burring process configured as above will be described below.
まず第４図のように、あらかじめ下穴１６を抜いた材料
１１をバーリングダイ１３の上面に置きストリッパー１
４で材料１１を固定する、次に第６図に示すように１６
は段付きバーリングパンチ２の先端部の小径箇所で最初
のバーリング加工をした部分を示す。次に第４図に示す
ように段付きバーリングパンチ１２の大径箇所で再ノ＜
−リング加工をする。First, as shown in FIG.
Fix the material 11 at 4, then 16 as shown in FIG.
1 shows the first burring process at the small diameter portion of the tip of the stepped burring punch 2. Next, as shown in FIG. 4, the large diameter portion of the stepped burring punch 12 is
−Machining the ring.
以上のように本実施例によれば最終ノ＜−リング部１７
の板厚が従来の一度バーリング加工と同じでも、段付き
バーリングパンチ２で再加工して板厚減少率を変化させ
る方法は、バーリング部の高さ寸法を高くする方向に大
きな効果がある。As described above, according to this embodiment, the final knot<-ring part 17
Even if the plate thickness is the same as the conventional one-time burring process, the method of changing the plate thickness reduction rate by reprocessing with the stepped burring punch 2 has a great effect in increasing the height of the burring part.
なお本実施例において段付きバーリングパンチ１２は二
段で行ったが、この径を二段以上にしてもよい。In this embodiment, the stepped burring punch 12 has two stages, but the diameter may be two or more stages.
発明の効果
以上のように本発明はパンチの導入先端部方向より、順
次しごき径を増しつつしごきを行っており、１ストロー
クで・く−リング部の板厚減少率を変化させることによ
りバーリング高さの高い寸法が得られる。又薄板での適
用もでき、さらに加工工程も１ストロークで完了する為
、コスト面、又生産面で従来と同一レベルであり、その
実用的効果は大なるものがある。Effects of the Invention As described above, the present invention performs ironing while gradually increasing the ironing diameter from the direction of the introduction tip of the punch, and by changing the rate of decrease in thickness of the burring part in one stroke, the burring height can be increased. A high dimension can be obtained. Furthermore, since it can be applied to thin plates and the machining process is completed in one stroke, the cost and production are at the same level as conventional methods, and its practical effects are great.
第１図及び第２図はそれぞれ従来の実施例の加工前及び
加工中のパンチとダイの断面図、第３図は本発明の一実
施例における多段バーリングツくンチの正面図、第４図
〜第６図は本発明の一実施例における加工工程を示し、
第４図はバーリング加工前のバーリングパンチとダイの
断面図、第６図は小径でのバーリング加工時の同断面図
、第６図は大径でのバーリング再加工時の同断面図であ
る。
１１・・・・・・被加工材、１２・・・・・・バーリン
グパンチ、１３・・・・・・ダイ、１４・・・・・・ス
トリッパ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図
第３図1 and 2 are cross-sectional views of a punch and die before and during processing in a conventional embodiment, respectively, FIG. 3 is a front view of a multi-stage burring punch in an embodiment of the present invention, and FIGS. FIG. 6 shows the processing steps in one embodiment of the present invention,
FIG. 4 is a sectional view of the burring punch and die before burring, FIG. 6 is a sectional view of the burring punch with a small diameter, and FIG. 6 is a sectional view of the burring with a large diameter. 11... Work material, 12... Burring punch, 13... Die, 14... Stripper. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3
Claims (1)
けるバーリング加工方法であって、導入先端部と、導入
先端部に近ずくにつれ直径が小さくなる中心軸に平行な
複数のストレート部と前記ストレート部を滑らかな連な
る曲線部よりなるバーリング加工部と、バーリング加工
部に連なるノ（ンチプレートに保持圧入されるストレー
ト部を有するパンチを用いて、前記パンチの導入先端部
方向より、順次しごき径を増しつつしごきを行うバーリ
ング加工方法。A burring processing method for forming protrusions on a metal plate by ironing with a punch and a die, the method comprising: an introduction tip, a plurality of straight portions parallel to a central axis whose diameter decreases as it approaches the introduction tip, and the straight portions. Using a punch that has a burring part consisting of a continuous curved part and a straight part connected to the burring part and held and press-fitted into the punch plate, the ironing diameter is sequentially adjusted from the direction of the introduction tip of the punch. A burring processing method that involves increasing and ironing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8432484A JPH0635021B2 (en) | 1984-04-25 | 1984-04-25 | Burring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8432484A JPH0635021B2 (en) | 1984-04-25 | 1984-04-25 | Burring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60227930A true JPS60227930A (en) | 1985-11-13 |
| JPH0635021B2 JPH0635021B2 (en) | 1994-05-11 |
Family
ID=13827328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8432484A Expired - Lifetime JPH0635021B2 (en) | 1984-04-25 | 1984-04-25 | Burring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635021B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63163212U (en) * | 1987-04-14 | 1988-10-25 | ||
| JP2010170631A (en) * | 2009-01-26 | 2010-08-05 | Nippon Densan Corp | Chucking device, brushless motor and disk drive device |
| CN104028621A (en) * | 2014-06-26 | 2014-09-10 | 南京惠德机械有限公司 | Cold stamping punch for automotive stamping parts |
| CN106424328A (en) * | 2016-10-27 | 2017-02-22 | 东莞市豪顺精密科技有限公司 | Flange hole forming technique |
| JP2018061977A (en) * | 2016-10-13 | 2018-04-19 | 株式会社アーク | Burring tool and burring device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794351B (en) * | 2012-05-15 | 2014-09-10 | 上海申驰实业有限公司 | Hole drawing and equal thickness machining technology for plate |
-
1984
- 1984-04-25 JP JP8432484A patent/JPH0635021B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63163212U (en) * | 1987-04-14 | 1988-10-25 | ||
| JP2010170631A (en) * | 2009-01-26 | 2010-08-05 | Nippon Densan Corp | Chucking device, brushless motor and disk drive device |
| CN104028621A (en) * | 2014-06-26 | 2014-09-10 | 南京惠德机械有限公司 | Cold stamping punch for automotive stamping parts |
| JP2018061977A (en) * | 2016-10-13 | 2018-04-19 | 株式会社アーク | Burring tool and burring device |
| CN106424328A (en) * | 2016-10-27 | 2017-02-22 | 东莞市豪顺精密科技有限公司 | Flange hole forming technique |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0635021B2 (en) | 1994-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |