JPS595055B2 - Processing method for hollow flange products by extrusion processing or hedging processing - Google Patents
Processing method for hollow flange products by extrusion processing or hedging processingInfo
- Publication number
- JPS595055B2 JPS595055B2 JP4403477A JP4403477A JPS595055B2 JP S595055 B2 JPS595055 B2 JP S595055B2 JP 4403477 A JP4403477 A JP 4403477A JP 4403477 A JP4403477 A JP 4403477A JP S595055 B2 JPS595055 B2 JP S595055B2
- Authority
- JP
- Japan
- Prior art keywords
- processing
- product
- punch
- extrusion
- hollow flange
- 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.)
- Expired
Links
Landscapes
- Extrusion Of Metal (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
本発明は中空押出用、中空ヘッディング用の加工方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a processing method for hollow extrusion and hollow heading.
従来、中空でフランジ付の製品を冷間鍛造で製作するた
めには多くの問題があった。Conventionally, there have been many problems in manufacturing hollow flanged products by cold forging.
すなわち穴の開口部附近の形状が所定のものになりにく
かった。In other words, the shape of the vicinity of the opening of the hole is difficult to achieve.
第１図においてスラグ１をフランジ付の製品４に押出又
はヘッディング加工するにはパンチ２とパンチ３が必要
である。In FIG. 1, a punch 2 and a punch 3 are required to extrude or head a slug 1 into a flanged product 4.
このときＡ部に切屑が発生する。At this time, chips are generated in part A.
第３図の５が切屑であり、リング状に発生し、分離する
。5 in FIG. 3 is a chip, which is generated in a ring shape and separated.
これをさけるためパンチ２を改良して段付にし、第２図
のＲ部にアールをつけた。In order to avoid this, the punch 2 was improved to have a stepped structure, and the R section in Fig. 2 was rounded.
しかしながらこの場合はパンチ３の加圧状態により第３
図のＢ又はＣに示す如く段部が発生する。However, in this case, the third
A stepped portion occurs as shown in B or C in the figure.
本発明はこれらの欠点を解決するものである。The present invention overcomes these drawbacks.
第４図に本発明の１実施例を示す。FIG. 4 shows one embodiment of the present invention.
スラグ１の穴の開口部りにアールを成形した後、このス
ラグを用いて押出又はヘッディング加工して製品４とす
る。After forming a radius around the hole opening of the slug 1, the product 4 is obtained by extrusion or heading processing using this slag.
この場合開口部りのアール部は加工硬化されているため
変形しない。In this case, the rounded portion around the opening is work hardened and does not deform.
したがってパンチ３に当らないため（第４図Ｅ部参照）
前述の切屑の発生、段付となる現象がなく、所定の形状
の製品を得ることができる。Therefore, it will not be hit by punch 3 (see part E in Figure 4).
A product having a predetermined shape can be obtained without the above-mentioned generation of chips or step formation.
第１図は従来の加工方法を示す断面図、１はスラグ、２
はパンチ、３はパンチ、４は製品、第２図はパンチおよ
び製品の断面図、第３図は不良品の断面図、４は製品、
５は切屑、Ｂは段部、Ｃは段部、第４図は本発明の１実
施例を示す断面図、Ｄは開口部のアール。Figure 1 is a cross-sectional view showing the conventional processing method, 1 is slag, 2
is a punch, 3 is a punch, 4 is a product, Figure 2 is a sectional view of the punch and product, Figure 3 is a sectional view of a defective product, 4 is a product,
5 is a chip, B is a step, C is a step, FIG. 4 is a sectional view showing one embodiment of the present invention, and D is a radius of the opening.
Claims (1)
開口部にアール加工を施した後、中空フランジ付製品の
中空部に適合する小径部と段部を挾んで小径部より若干
太い大径部とからなるパンチ２と、パンチ２の大径部に
適合する穴と製品のフランジ部外径に等しい外径を有し
、その下面がパンチ２の段部と一致した状態で協働する
パンチ３と、製品の外形に適合する穴を有し、パンチ２
及３と協働して製品を成形するダイ４とを用いて製品に
加工することを特徴とする押出加工又はヘッディング加
工による中空フランジ付製品の加工方夾1. In cold forging, after rounding the upper opening of the pilot hole in the slag in advance, a large diameter part that is slightly thicker than the small diameter part is formed by sandwiching the small diameter part and stepped part that fit into the hollow part of the hollow flange product. a punch 2 having a hole that fits the large diameter part of the punch 2 and an outer diameter equal to the outer diameter of the flange part of the product, and a punch 3 that cooperates with the punch 2 with its lower surface aligned with the step part of the punch 2. , has a hole that matches the external shape of the product, and punches 2
A method of processing a product with a hollow flange by extrusion processing or heading processing, characterized in that the product is processed into a product using a die 4 that cooperates with a die 4 to form the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4403477A JPS595055B2 (en) | 1977-04-19 | 1977-04-19 | Processing method for hollow flange products by extrusion processing or hedging processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4403477A JPS595055B2 (en) | 1977-04-19 | 1977-04-19 | Processing method for hollow flange products by extrusion processing or hedging processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53137065A JPS53137065A (en) | 1978-11-30 |
| JPS595055B2 true JPS595055B2 (en) | 1984-02-02 |
Family
ID=12680341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4403477A Expired JPS595055B2 (en) | 1977-04-19 | 1977-04-19 | Processing method for hollow flange products by extrusion processing or hedging processing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595055B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5469142U (en) * | 1977-10-26 | 1979-05-16 | ||
| JPS56111541A (en) * | 1980-02-05 | 1981-09-03 | Daihatsu Motor Co Ltd | Production of projection nut |
| CN109365598B (en) * | 2018-09-06 | 2020-05-26 | 中国船舶重工集团公司第七二五研究所 | Flanging forming method for copper-nickel alloy flange |
-
1977
- 1977-04-19 JP JP4403477A patent/JPS595055B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53137065A (en) | 1978-11-30 |
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