JPH0218925B2 - - Google Patents
Info
- Publication number
- JPH0218925B2 JPH0218925B2 JP57006059A JP605982A JPH0218925B2 JP H0218925 B2 JPH0218925 B2 JP H0218925B2 JP 57006059 A JP57006059 A JP 57006059A JP 605982 A JP605982 A JP 605982A JP H0218925 B2 JPH0218925 B2 JP H0218925B2
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- cutter
- blank
- shape
- present
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 50
- 239000010959 steel Substances 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/06—Making more than one part out of the same blank; Scrapless working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Shearing Machines (AREA)
Description
【発明の詳細な説明】
本発明は、プレス加工等に使用する帯鋼の製造
方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for producing steel strips used in press working and the like.
従来、プレス加工等の材料は、第１図に示すよ
うにフープ状の帯鋼素材１を後述のスリツタによ
り一定幅に細断し、第２図に示すようなフープ状
の或いは板状の帯鋼２を製造して使用していた。
第３図はスリツタによる従来の帯鋼の製造方法を
示しており、上下１組のロール駆状のカツタ３
ａ，３ｂは図示しない駆動装置によつてそれぞれ
中心線４ａ，４ｂを中心として回動する。両カツ
タの間を通過した帯鋼素材１は細断され複数個の
帯鋼２が製造される。しかしながら、こうした帯
鋼２は幅方向端部（切断面）が直線であり、且つ
一定幅に細断されているため、例えば第４図に示
すような楕円或いは円形状のブランク５をプレス
加工する場合、ブランク外形と切断面との間のス
ペースが大きく、材料歩留が非常に悪いという問
題点があつた。 Conventionally, materials for press working, etc., have been produced by cutting a hoop-shaped steel strip material 1 into strips of a certain width using a slitter, which will be described later, as shown in FIG. Steel 2 was manufactured and used.
Figure 3 shows the conventional manufacturing method of steel strip using a slitter, in which a set of upper and lower roll-shaped slits 3
a and 3b are rotated about center lines 4a and 4b, respectively, by a drive device (not shown). The steel strip material 1 that has passed between the two cutters is shredded to produce a plurality of steel strips 2. However, since such a steel strip 2 has a straight end (cut surface) in the width direction and is cut into pieces of a constant width, it is necessary to press a blank 5 in an oval or circular shape as shown in FIG. 4, for example. In this case, there was a problem that the space between the blank outline and the cut surface was large, resulting in a very poor material yield.
その問題点を解消する方法として帯鋼両側部を
ブランク外形に合致する形状にする方法が提案さ
れているがカツタ等を移動させる方法をとつてい
るので、移動させる装置が特別に必要となる等構
造が複雑となり改善がが望まれていた。 As a way to solve this problem, a method has been proposed in which both sides of the steel strip are shaped to match the blank outline, but since this method involves moving the cutter, etc., a special moving device is required. The structure was complicated and improvements were desired.
本発明は上記従来の問題点を解消するもので、
材料歩留の向上を簡単な方法で効果的に行なえる
帯鋼の製造方法を提供することを目的としてい
る。 The present invention solves the above conventional problems,
It is an object of the present invention to provide a method for manufacturing a steel strip that can effectively improve material yield in a simple manner.
本発明は帯鋼素材を所定幅の帯鋼に加工する場
合であつて、スリツタの一方のロール駒状カツタ
の円周方向終端両側部をブランク外形に略々相対
的、近似的に合致した波状とし、他のカツタの円
周方向終端両側部を前記カツタの円周方向終端両
側部の形状に相対的に合致させた波状とすると共
に、前記一方のロール駒状カツタと前記他方のカ
ツタを上下に配置し、この両カツタの間に帯鋼素
材を通過させることによつて、幅方向端部をブラ
ンク外形に略々近似的に合致させるようにした帯
鋼とその製造方法である。 The present invention is applied to processing a steel strip material into a steel strip of a predetermined width, and the both sides of the circumferential end of one of the roll-shaped cutters of the slitter are formed into a wavy shape that approximately corresponds to the outer shape of the blank. The two ends of the other cutter in the circumferential direction have a wavy shape that relatively matches the shape of the two ends of the circumferential end of the other cutter, and the one rolled piece-like cutter and the other cutter are arranged vertically. The present invention relates to a steel strip and a method for manufacturing the same, in which the end portion in the width direction approximately matches the outer shape of the blank by passing the steel strip material between the two cutters.
以下本発明の一実施例を図面によつて説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第５図に示すようにフープ状の帯鋼素材１′は、
後述のスリツタにより幅方向端部（切断面）が波
状になるように細断され、第６図に示すようなフ
ープ状の或いは板状の帯鋼２′として形成される。 As shown in Fig. 5, the hoop-shaped steel strip material 1' is
A slitter, which will be described later, slits the steel strip so that the ends (cut surfaces) in the width direction are wavy, thereby forming a hoop-shaped or plate-shaped steel strip 2' as shown in FIG.
ここで本発明による帯鋼の幅方向端部の波形状
について第７図によつて説明する。異なつて位置
した中心点O1，O2を中心として半径R1，R2の円
弧を形成し、該両円弧を接線で結ぶことによつて
得られたのが図示のような波形状である。尚、こ
の波形状におけるR1，R2の大きさはブランク外
形により近似的に決定されるものである。 Here, the wave shape of the widthwise end portion of the steel strip according to the present invention will be explained with reference to FIG. The wave shape shown in the figure is obtained by forming arcs with radii R 1 and R 2 around different center points O 1 and O 2 and connecting both arcs with a tangent. . Note that the sizes of R 1 and R 2 in this waveform are approximately determined by the blank outline.
第８図は帯鋼の製造方法を示しており上下１組
のロール駒状のカツタ３a′，３b′は図示しない駆
動装置によつてそれぞれ中心線４a′，４b′を中心
として回転する。第８図に示す状態ではカツタ３
a′は中央部に近づくにつれてその径が大きくなつ
ているのに対し、カツタ３b′は中央部に近づくに
つれてその径が小さくなつておりカツタを回転さ
せた時カツタ３a′の凸部がカツタ３b′の凹部に位
置するように即ちカツタ３a′，３b′の対応する稜
線部の形状は対称となつている。こうしたスリツ
タにより加工された帯鋼２′は第９図に示すよう
に幅方向端部（切断面）が波状になつているため
楕円或いは円形状のブランク５をプレス加工で製
造する場合でも、ブランク外形と切断面との間の
スペースが小さいため材料歩留が非常によい。 FIG. 8 shows a method of manufacturing a steel strip, in which a pair of upper and lower roll-shaped cutters 3a', 3b' are rotated about center lines 4a', 4b', respectively, by a drive device (not shown). In the state shown in Fig. 8, the cutter 3
The diameter of a' increases as it approaches the center, whereas the diameter of the cutter 3b' decreases as it approaches the center.When the cutter is rotated, the convex part of the cutter 3a' becomes the cutter 3b. In other words, the shapes of the corresponding ridgeline portions of the cutters 3a' and 3b' are symmetrical so that they are located in the recessed portions of the cutters 3a' and 3b'. As shown in FIG. 9, the steel strip 2' processed by such a sliver has a wavy end (cut surface) in the width direction, so even when an elliptical or circular blank 5 is manufactured by press working, the blank is The material yield is very good because the space between the outer shape and the cut surface is small.
尚、以下第１０図及び第１１図はその理論的な
一例を示すものであるが以下説明する。ある製品
のブランク形状を半径R3の円形であるとし、抜
き代をｘとすると従来の帯鋼の場合、材料幅は２
（R3＋ｘ）必要となる。これに対し本発明に従え
ば（１＋√３／２）（R3＋ｘ）となり実質的に材
料幅は短縮される。第１０図は、成形を完了した
帯鋼を２枚合わせたもので、ａは従来の帯鋼、ｂ
は本発明による帯鋼である。２枚合わせたのは説
明を容易にするるためであつて、１枚或いは２枚
以上であつても本発明を逸脱するものではないこ
とを付言しておく。第１０図ａにおいて、帯鋼の
必要長は２（R3＋ｘ）となり、２枚では４（R3＋
ｘ）となり、これをL1とする。これに対し、第
１０図ｂにおいては、直角三角形形PQRの辺PR
の長さは２（R3＋ｘ）、又辺PQの長さはR3＋ｘで
あるので辺QRの長さは三平方の定理より√３
（R3＋ｘ）で表わされる。従つて２枚の帯鋼の必
要長L2は
L2＝２（R3＋ｘ）＋√３（R3＋ｘ）
＝（２＋√３）（R3＋ｘ）
で表わされる。ここでL1とL2とを比較すれば、
L1＞L2であることは明らかである。以上により
実質的に帯鋼の幅が短縮でき材料歩留の向上を図
ることができる。第１１図はカツタの円周方向終
端部の展開図であり、ａは上側カツタ、ｂは下側
カツタを示し、稜線部３１′ａ，３１′ｂを適正な
位置に対応させることにより帯鋼素材１′は前記
稜線部３１′ａ，３１′ｂに合致した波状に切断さ
れる。 Note that FIGS. 10 and 11 show a theoretical example thereof, which will be explained below. Assuming that the blank shape of a certain product is circular with a radius of R 3 , and the removal allowance is x, then in the case of conventional steel strip, the material width is 2.
(R 3 +x) is required. On the other hand, according to the present invention, it becomes (1+√3/2)(R 3 +x), and the material width is substantially shortened. Figure 10 shows a combination of two steel strips that have been formed, a is a conventional steel strip, and b is a conventional steel strip.
is a steel strip according to the present invention. It should be added that the combination of two sheets is for ease of explanation, and the use of one sheet or two or more sheets does not deviate from the present invention. In Figure 10a, the required length of the steel strip is 2 (R 3 + x), and for two strips it is 4 (R 3 +
x), and let this be L 1 . On the other hand, in Figure 10b, the side PR of the right triangle PQR
Since the length of is 2(R 3 + x) and the length of side PQ is R 3 + x, the length of side QR is √3 from the Pythagorean theorem.
It is expressed as (R 3 +x). Therefore, the required length L 2 of the two steel strips is expressed as L 2 =2(R 3 +x)+√3(R 3 +x) =(2+√3)(R 3 +x). Now, if we compare L 1 and L 2 , we get
It is clear that L 1 >L 2 . As a result of the above, the width of the steel strip can be substantially shortened and the material yield can be improved. FIG. 11 is a developed view of the end portion of the cutter in the circumferential direction, where a indicates the upper cutter and b indicates the lower cutter. The material 1' is cut into a wave shape that matches the ridge lines 31'a and 31'b.
以上のように本発明は、帯鋼を前述の通りの構
成とすることにより材料歩留が向上し、カツタの
円周方向終端両側部をブランク外形に略々相対的
に合致させるという簡単な方法であるので、カツ
タ等を移動する必要がないので、簡単な構造とな
り、極めて実用的である。 As described above, the present invention provides a simple method in which the material yield is improved by configuring the steel strip as described above, and the both sides of the circumferential end of the cutter are made to approximately match the outer shape of the blank. Therefore, there is no need to move the cutter or the like, so the structure is simple and extremely practical.
尚、上記実施例ではブランクが円形状のものに
ついて説明したがこれに限定されることなく、他
の形状でもかまわない。 In the above embodiments, the blank has a circular shape, but the blank is not limited to this, and other shapes may be used.
又、帯鋼の切断面の波形状はブランクに応じて
種々変更されるのは勿論である。 Moreover, it goes without saying that the wave shape of the cut surface of the steel strip can be changed in various ways depending on the blank.
第１図は従来の帯鋼素材と帯鋼の関係を示す斜
視図、第２図は従来の帯鋼を示す斜視図、第３図
は従来の帯鋼の製造方法を示す概略図、第４図は
従来の帯鋼とブランク形状との関係を示す平面
図、第５図は本発明による帯鋼素材と帯鋼の関係
を示す斜視図、第６図は本発明による帯鋼を示す
斜視図、第７図は本発明による帯鋼の波形状を示
す平面図、第８図は本発明による帯鋼の製造方法
を示す概略図、第９図は本発明による帯鋼とブラ
ンク形状との関係を示す平面図、第１０図は従来
の帯鋼と本発明による帯鋼を比較する平面図、第
１１図は本発明によるカツタの円周方向終端部の
展開図である。
１，１′……帯鋼素材、２，２′……帯鋼、３
ａ，３a′，３ｂ，３b′……カツタ、４ａ，４a′，
４ｂ，４b′……中心線、５……ブランク。
Fig. 1 is a perspective view showing the relationship between a conventional steel band material and a steel band, Fig. 2 is a perspective view showing a conventional steel band, Fig. 3 is a schematic diagram showing a conventional method for manufacturing a steel band, and Fig. 4 is a perspective view showing the relationship between a conventional steel band material and a steel band. The figure is a plan view showing the relationship between the conventional steel strip and the blank shape, FIG. 5 is a perspective view showing the relationship between the steel strip material and the steel strip according to the present invention, and FIG. 6 is a perspective view showing the steel strip according to the present invention. , FIG. 7 is a plan view showing the wave shape of the steel strip according to the present invention, FIG. 8 is a schematic diagram showing the manufacturing method of the steel strip according to the present invention, and FIG. 9 is a relationship between the steel strip according to the present invention and the blank shape. FIG. 10 is a plan view comparing the conventional steel strip and the steel strip according to the present invention, and FIG. 11 is a developed view of the end portion in the circumferential direction of the cutter according to the present invention. 1, 1'... Steel strip material, 2, 2'... Steel strip, 3
a, 3a', 3b, 3b'...Katsuta, 4a, 4a',
4b, 4b'...Center line, 5...Blank.
Claims (1)
つて、スリツタの一方のロール駒状カツタの円周
方向終端両側部をブランク外形に略々相対的に合
致した波状とし、他のカツタの円周方向終端両側
部を前記カツタの円周方向終端両側部の形状に相
対的に合致させた波状とすると共に、前記ロール
駒状カツタと前記他のカツタを上下に配置し、こ
の両カツタの間に帯鋼素材を通過させることによ
つて、幅方向端部をブランク外形に略々合致させ
るようにしたことを特徴とする帯鋼の製造方法。1. When processing a steel strip material into a steel strip of a predetermined width, the circumferential end sides of one of the rolled cutters of the slitter are made into a wavy shape that roughly matches the blank outer shape, and the other cutters are Both sides of the circumferential end of the cutter are formed into a wavy shape that relatively matches the shape of both sides of the circumferential end of the cutter, and the roll piece-shaped cutter and the other cutter are arranged one above the other, and the both cutters 1. A method for producing a steel strip, characterized in that the end portion in the width direction approximately matches the outer shape of the blank by passing the steel strip material between the blanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP605982A JPS58125319A (en) | 1982-01-20 | 1982-01-20 | Band steel having corrugated end part in width direction and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP605982A JPS58125319A (en) | 1982-01-20 | 1982-01-20 | Band steel having corrugated end part in width direction and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58125319A JPS58125319A (en) | 1983-07-26 |
| JPH0218925B2 true JPH0218925B2 (en) | 1990-04-27 |
Family
ID=11628019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP605982A Granted JPS58125319A (en) | 1982-01-20 | 1982-01-20 | Band steel having corrugated end part in width direction and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58125319A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114643A (en) * | 2010-12-08 | 2011-07-06 | 高萌 | Method for cutting rubber belt coil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5024873A (en) * | 1973-07-09 | 1975-03-17 | ||
| JPS5674319A (en) * | 1979-11-22 | 1981-06-19 | Aida Eng Ltd | Recoiler line for scroll cutting |
-
1982
- 1982-01-20 JP JP605982A patent/JPS58125319A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5024873A (en) * | 1973-07-09 | 1975-03-17 | ||
| JPS5674319A (en) * | 1979-11-22 | 1981-06-19 | Aida Eng Ltd | Recoiler line for scroll cutting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58125319A (en) | 1983-07-26 |
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