JPH0119972B2 - - Google Patents
Info
- Publication number
- JPH0119972B2 JPH0119972B2 JP57045180A JP4518082A JPH0119972B2 JP H0119972 B2 JPH0119972 B2 JP H0119972B2 JP 57045180 A JP57045180 A JP 57045180A JP 4518082 A JP4518082 A JP 4518082A JP H0119972 B2 JPH0119972 B2 JP H0119972B2
- Authority
- JP
- Japan
- Prior art keywords
- burring
- plate material
- spherical
- punch
- die
- 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
- 239000000463 material Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 7
- 238000004080 punching Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 101150105594 SCM3 gene Proteins 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は板材のバーリング加工方法を改良し、
バーリング部の高さを大きくすることが出来るよ
うにしたものである。[Detailed Description of the Invention] Industrial Application Field The present invention improves a method for burring plate materials,
The height of the burring part can be increased.
従来の技術
例えば、つば付きシヤフトを製作する場合に
は、第１図に示すようにプレス加工によつてつば
１を、また熱間鋳造の後、切削加工を行なつてシ
ヤフト２を、また冷間鋳造の後切削加工を行なつ
て固定金具３をそれぞれ製造し、これらの３個の
部品を組付け、かしめることによつてつば付きシ
ヤフト４を得ることが一般に行なわれているが、
この方法では熱間鋳造のため部品制度が悪く、ま
た部品点数が多い上、加工工程も多くなり、部品
コストが高くなると共に生産性が悪いという問題
がある。2. Prior Art For example, when manufacturing a shaft with a flange, as shown in FIG. Generally, the fixing fittings 3 are manufactured by cutting after casting, and the flanged shaft 4 is obtained by assembling and caulking these three parts.
This method has problems such as poor parts accuracy due to hot casting, a large number of parts, and a large number of processing steps, resulting in high parts costs and poor productivity.
発明が解決しようとする問題点
この問題を解決するために、第２図に示すよう
にプレス加工によつてバーリング加工を施したつ
ば５と、冷間鋳造によつて製造されたシヤフト６
とにセレーシヨン加工を施し、両者を嵌合させて
つば付きシヤフト７を得ることも行なわれている
が、バーリング加工によつて得られるバーリング
部の高さに限界があるためセレーシヨン加工によ
る結合度合が小さく、必要な強度が確保できない
場合が生ずる。本発明は、このような問題点に着
目し、従来の加工方法よりもバーリング部の高さ
を高くすることができる加工方法を提供すること
を目的としてなされたものである。Problems to be Solved by the Invention In order to solve this problem, as shown in FIG.
It is also possible to apply serration processing to the two and fit them together to obtain the shaft 7 with a flange, but since there is a limit to the height of the burring part that can be obtained by burring processing, the degree of connection by serration processing is limited. There may be cases where the required strength cannot be secured due to the small size. The present invention has been made in view of these problems and has an object of providing a processing method that can increase the height of the burring portion compared to conventional processing methods.
問題点を解決するための手段
すなわち、本発明はバーリング加工を行なう板
材にまず球面曲げ加工を施し、次いで球面の中心
に向かう方向にバーリング部を突出形成すると共
にバーリング部の周囲を平板状に形成加工するこ
とを特徴とするものである。Means for Solving the Problems That is, the present invention first performs spherical bending on a plate material to be burred, then forms a burring portion protruding in the direction toward the center of the spherical surface, and forms the periphery of the burring portion into a flat plate shape. It is characterized by being processed.
更に詳しくは、バーリング加工を行なう板材１
１はダイ１２と抜きパンチ１３によつて中心穴１
４を穿孔され、次に板材１１は球面状の凹面を有
するダイ１７と球面状の凸面を有するパンチ１８
によつて球面状に曲げ加工され、その後板材１１
は球面を上向きにしてダイ２２上にセツトされ、
パンチ２３によつて下向き、すなわち、球面の中
心方向に向けてバーリング部１１ａが突出するよ
うにプレス成形されると、同時にバーリング部１
１ａの周囲は平板状にプレス成形されてつば部１
１ｂを形成し、続いて板材１１はダイ２７上にバ
ーリング部１１ａを下向きにしてセツトされ、セ
レーシヨンパンチ２８によつてバーリング部１１
ａの内面にセレーシヨン加工を施されるようにし
たことを特徴とする板材のバーリング加工方法を
新規に創作して、従来のバーリング加工方法に比
べて２倍以上の高さのバーリング部を得ることが
出来、第２図に例示したような用途に適したバー
リング加工部品を容易に製造することができるよ
うにしたものである。 For more details, please refer to the plate material 1 to be burred.
1 is a center hole 1 made by die 12 and punch 13.
4, the plate material 11 is then punched with a die 17 having a spherical concave surface and a punch 18 having a spherical convex surface.
The plate material 11 is bent into a spherical shape by
is set on the die 22 with the spherical surface facing upward,
When the burring part 11a is press-formed by the punch 23 so as to protrude downward, that is, toward the center of the spherical surface, the burring part 1
The periphery of 1a is press-molded into a flat plate shape to form the collar portion 1.
1b is formed, and then the plate material 11 is set on the die 27 with the burring part 11a facing downward, and the burring part 11 is formed by the serration punch 28.
To create a new method for burring a plate material, which is characterized by applying serration processing to the inner surface of a, and to obtain a burring part with a height more than twice that of the conventional burring method. This makes it possible to easily manufacture burred parts suitable for uses such as those illustrated in FIG.
実施例
次に本発明の一実施例について、加工工程を順
を追つて示した第３図ａ〜第３図ｄによつて説明
する。Embodiment Next, an embodiment of the present invention will be described with reference to FIGS. 3a to 3d, which show the processing steps in order.
第３図ａは、抜き工程であり、板材１１はダイ
１２と抜きパンチ１３によつて中心穴１４を穿孔
させる。１５はノツクアウト、１６はストリツパ
である。 FIG. 3a shows a punching process in which a center hole 14 is punched in the plate material 11 using a die 12 and a punch 13. 15 is a knockout, and 16 is a stripper.
次の第３図ｂは、球面曲げ加工工程であり、板
材１１は球面状の凹面を有するダイ１７と球面状
の凸面を有するパンチ１８によつて球面状に曲げ
加工される。１９は中心穴１４に挿通されるガイ
ド、２０，２１はノツクアウトであり、鎖線で示
す板材１１は曲げ加工前の状態を示したものであ
る。 The next step in FIG. 3b shows a spherical bending step, in which the plate material 11 is bent into a spherical shape by a die 17 having a spherical concave surface and a punch 18 having a spherical convex surface. Reference numeral 19 indicates a guide inserted into the center hole 14, 20 and 21 indicate knockouts, and the plate material 11 shown by chain lines shows the state before bending.
さらに第３図ｃは、バーリング加工工程であ
り、板材１１は鎖線で示すように球面を上向きに
してダイ２２上にセツトされ、パンチ２３によつ
て下向き、すなわち球面の中心方向に向けてバー
リング部１１ａが突出するようにプレス成形さ
れ、同時にバーリング部１１ａの周囲は平板状に
プレス成形されてつば部１１ｂとなる。２４はガ
イド、２５，２６はノツクアウトである。最後の
第３図ｄはセレーシヨン加工工程であり、板材１
１はダイ２７上にバーリング部１１ａを下向きに
してセツトされ、セレーシヨンパンチ２８によつ
てバーリング部１１ａの内面にセレーシヨン加工
を施される。またこの工程ではつば部１１ｂの外
周部に抜きパンチ２９によつてギア抜き加工も同
時に行なわれる。３０，３１はノツクアウトであ
る。こうして板材１１の加工は終わり、セレーシ
ヨン加工３２されたバーリング部１１ａとギヤ加
工３３されたつば部１１ｂとを有するつば付き部
品３４が得られる。 Further, FIG. 3c shows the burring process, in which the plate material 11 is set on the die 22 with the spherical surface facing upward as shown by the chain line, and the burring part is punched downward by the punch 23, that is, toward the center of the spherical surface. 11a is press-molded so as to protrude, and at the same time, the periphery of the burring portion 11a is press-molded into a flat plate shape to form the flange portion 11b. 24 is a guide, and 25 and 26 are knockouts. The final figure 3d shows the serration process, in which plate material 1
1 is set on the die 27 with the burring portion 11a facing downward, and the serration punch 28 performs serration processing on the inner surface of the burring portion 11a. Further, in this step, a gear punching process is simultaneously performed on the outer peripheral portion of the flange portion 11b using a punching punch 29. 30 and 31 are knocked out. In this manner, the processing of the plate material 11 is completed, and a flanged component 34 having a burring portion 11a subjected to serration processing 32 and a flange portion 11b subjected to gear processing 33 is obtained.
第４図はこのようにして得られたつば付き部品
３４とシヤフト３５を組み合わせてつば付きシヤ
フト３６を得る手順を模式図的に示したものであ
り、第４図のａ，ｂ，ｃ，ｄは第３図ａ，第３図
ｂ，第３図ｃ，第３図ｄに示す各工程での加工後
の状態をそれぞれ示している。また第４図のｅ，
ｆ，ｇは、シヤフト３５の加工手順を示すもの
で、ｅに示す鉄材などの棒材３７を押し出し加工
してｆの中空のシヤフト３５とし、これの端部外
面にセレーシヨン加工３８を施してｇの形状と
し、ｄのつば付き部品３４と組み合わせてつば付
きシヤフト３６が完成される。なお、シヤフト３
５はパイプ材であつてもよい。 FIG. 4 schematically shows a procedure for obtaining a flanged shaft 36 by combining the flanged part 34 obtained in this way and the shaft 35, and a, b, c, d in FIG. 3A, 3B, 3C, and 3D show the state after processing, respectively. Also, e in Figure 4,
f and g show the processing procedure for the shaft 35, in which a bar 37 such as iron material shown in e is extruded to form a hollow shaft 35 f, and the outer surface of the end thereof is subjected to serration processing 38 to form g. The flange shaft 36 is completed by combining it with the flange part 34 of d. In addition, shaft 3
5 may be a pipe material.
第５図は、本発明によつてバーリング加工を行
なつた場合の球面形状とバーリング部の高さとの
関係の一例を示したグラフであり、横軸は球面曲
げ加工された場合の球面の半径Ｒと球面曲げ加工
前の板材の外径Doとの比、すなわち球面形状比
Ｒ／Do、縦軸は加工後のバーリング部の高さｈ
の最大値hmaxと内径dpとの比、すなわち限界高
さhmax／dpである。第６図のａ，ｂ，ｃに各部
の寸法を示し、この例では、板厚to＝２mm、外径
Do＝70mm、内径dp＝19mmにおいて、球面半径Ｒ
と中心穴の径doを変えた場合に可能な最大高さ
hmaxを示している。尚、材質はSCM3材（HRB
＝78〜80）が用いられている。第５図において、
各曲線の下側Ａが適用可能域、右上のＢが割れ発
生域、左上のＣが変形発生域であり、各曲線がそ
れぞれの条件における限界高さとなる。割れ発生
域Ｂでは第６図のｄのようにバーリング部に割れ
が生じ、変形発生域Ｃでは第６図のｅのようにつ
ば部の平面度が悪くなる。 FIG. 5 is a graph showing an example of the relationship between the spherical shape and the height of the burring part when burring is performed according to the present invention, and the horizontal axis is the radius of the spherical surface when spherical bending is performed. The ratio of R to the outer diameter Do of the plate material before spherical bending, that is, the spherical shape ratio R/Do, and the vertical axis is the height h of the burring part after processing.
The ratio between the maximum value hmax and the inner diameter dp, that is, the limit height hmax/dp. The dimensions of each part are shown in a, b, and c of Fig. 6. In this example, the plate thickness to = 2 mm, the outer diameter
Do=70mm, inner diameter dp=19mm, spherical radius R
and the maximum height possible when changing the center hole diameter do
Shows hmax. The material is SCM3 material (H RB
=78~80) are used. In Figure 5,
The lower side A of each curve is the applicable area, the upper right B is the crack occurrence area, the upper left C is the deformation generation area, and each curve is the limit height under each condition. In the cracking region B, cracks occur in the burring portion as shown in d in FIG. 6, and in the deformation region C, the flatness of the flange portion deteriorates as shown in e in FIG. 6.
図から明らかなように、hmax／dpが最高にな
るのはdo／dp＝0.37でＲ／Do＝0.48の時であり、
Ｒ／Doが無限大、すなわち球面曲げ加工を全く
行なわない従来例のhmax／dp＝0.37に対して、
本発明によればhmax／dp＝0.85となり、２倍以
上の高さまで加工出来ることがわかる。 As is clear from the figure, hmax/dp is highest when do/dp=0.37 and R/Do=0.48,
Compared to hmax/dp=0.37 in the conventional example in which R/Do is infinite, that is, no spherical bending is performed,
According to the present invention, hmax/dp=0.85, which shows that it is possible to process to a height that is more than twice as high.
また、その他の条件においても、従来例より限
界高さはかなり大きくなつている。尚、各部の寸
法や材質が変つても同じ傾向の結果が得られる。 Also, under other conditions, the limit height is considerably larger than that of the conventional example. Note that even if the dimensions and materials of each part are changed, the results tend to be the same.
発明の効果
以上の説明から明らかなように、本発明は板材
に球面曲げ加工を施した後に、球面の中心方向に
向けてバーリング加工を行ない、同時に周囲を平
板状に成形加工することにより、バーリング部の
高さの加工限界を従来の方法によるものより大幅
に向上させ、バーリング加工の適用範囲の拡大を
可能としたものであり、例えばセレーシヨン加工
したシヤフトつばとを組み合わせてつば付きシヤ
フトを製作する場合に、必要な強度の嵌合部を得
ることなどは極めて容易となるのである。Effects of the Invention As is clear from the above description, the present invention performs spherical bending on a plate material, then performs burring in the direction of the center of the spherical surface, and at the same time forms the periphery into a flat plate shape. This greatly improves the machining limit of the height of the part compared to conventional methods, making it possible to expand the scope of application of burring. For example, by combining a serrated shaft collar with a serrated shaft collar, a shaft with a collar can be manufactured. In this case, it is extremely easy to obtain a fitting portion with the necessary strength.
第１図はつば付きシヤフトの一例を示す側面
図、第２図は同じくつば付きシヤフトの他の一例
を示す一部破断側面図、第３図ａ，ｂ，ｃ，ｄは
本発明の一実施例における加工状況を示す断面
図、第４図は本発明の実施例によりつば付きシヤ
フトを得る手順を示す模式図、第５図は本発明に
よる加工限界を示す図、第６図は第５図の説明の
ための板材の断面図である。
１１……板材、１１ａ……バーリング部、１１
ｂ……つば部。
FIG. 1 is a side view showing an example of a shaft with a flange, FIG. 2 is a partially cutaway side view showing another example of a shaft with a flange, and FIGS. 3 a, b, c, and d are one embodiment of the present invention. 4 is a schematic diagram showing the procedure for obtaining a flanged shaft according to the embodiment of the present invention, FIG. 5 is a diagram showing the processing limits according to the present invention, and FIG. FIG. 2 is a cross-sectional view of a plate material for explaining. 11... Plate material, 11a... Burring part, 11
b...Brim part.
Claims (1)
と抜きパンチ１３によつて中心穴１４を穿孔さ
れ、次に板材１１は球面状の凹面を有するダイ１
７と球面状の凸面を有するパンチ１８によつて球
面状に曲げ加工され、その後板材１１は球面を上
向きにしてダイ２２上にセツトされ、パンチ２３
によつて下向き、すなわち、球面の中心方向に向
けてバーリング部１１ａが突出するようにプレス
成形されると、同時にバーリング部１１ａの周囲
は平板状にプレス成形されてつば部１１ｂを形成
し、続いて板材１１はダイ２７上にバーリング部
１１ａを下向きにしてセツトされ、セレーシヨン
パンチ２８によつてバーリング部１１ａの内面に
セレーシヨン加工を施されるようにしたことを特
徴とする板材のバーリング加工方法。1 The plate material 11 to be burred is die 12
A center hole 14 is punched with a punch 13, and then the plate material 11 is passed through a die 1 having a spherical concave surface.
7 and a punch 18 having a spherical convex surface, the plate material 11 is bent into a spherical shape, and then the plate material 11 is set on a die 22 with the spherical surface facing upward, and the punch 23
When the burring part 11a is press-molded so as to protrude downward, that is, toward the center of the spherical surface, the periphery of the burring part 11a is simultaneously press-molded into a flat plate shape to form the flange part 11b, and then The plate material 11 is set on a die 27 with the burring part 11a facing downward, and the inner surface of the burring part 11a is serrated by a serration punch 28. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4518082A JPS58163531A (en) | 1982-03-19 | 1982-03-19 | Burring method of plate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4518082A JPS58163531A (en) | 1982-03-19 | 1982-03-19 | Burring method of plate material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58163531A JPS58163531A (en) | 1983-09-28 |
| JPH0119972B2 true JPH0119972B2 (en) | 1989-04-13 |
Family
ID=12712066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4518082A Granted JPS58163531A (en) | 1982-03-19 | 1982-03-19 | Burring method of plate material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58163531A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60234729A (en) * | 1984-05-04 | 1985-11-21 | Matsushita Refrig Co | Manufacture of fin for heat exchanger |
| JPH0644489Y2 (en) * | 1988-06-01 | 1994-11-16 | トヨタ自動車株式会社 | Burring mold |
| JP3234950B2 (en) * | 1996-10-07 | 2001-12-04 | 株式会社カネミツ | Boss forming method of boss integrated type sheet metal member |
| JP3866939B2 (en) * | 2001-06-29 | 2007-01-10 | 株式会社不二越 | Burring method |
| CN103920813A (en) * | 2014-04-23 | 2014-07-16 | 靖江三鹏汽车模具制造有限公司 | Improved technology of internal fluted disc burring die of flywheel shock mitigation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52136935U (en) * | 1976-04-13 | 1977-10-18 |
-
1982
- 1982-03-19 JP JP4518082A patent/JPS58163531A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58163531A (en) | 1983-09-28 |
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