JPS6033811A - Manufacture of square wire rod - Google Patents
Manufacture of square wire rodInfo
- Publication number
- JPS6033811A JPS6033811A JP14207883A JP14207883A JPS6033811A JP S6033811 A JPS6033811 A JP S6033811A JP 14207883 A JP14207883 A JP 14207883A JP 14207883 A JP14207883 A JP 14207883A JP S6033811 A JPS6033811 A JP S6033811A
- Authority
- JP
- Japan
- Prior art keywords
- die
- wire rod
- reduction rate
- wire
- square
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
- B21C1/04—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums with two or more dies operating in series
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は角線の製造方法、特に断面形状が円形の線材
を引抜加工により角形断面形状にする角線の製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing a square wire, and particularly to a method for manufacturing a square wire in which a wire having a circular cross-sectional shape is made into a square cross-sectional shape by drawing.
第１図は従来の角線の製造方法を示す正面図、第２図は
そのＡ−Ａ断面図である。図において、（１ａ）は断面
形状が円形の線材からなる引抜前の素材、（ｌｂ）はこ
の引抜前の素材の端末、（ＩＣ）は引抜中の素材、（ｌ
ｄ）は角形断面形状の引抜後の素材、（２）はコイル状
に巻かれた引抜前の素材（１ａ）を載せ自由に回る回転
台、（３ａ）、（３ｂ）、（３ｃ）、（３ｄ）はこの回
転台から送り出される引抜前の素材（１ａ）を挟んで回
転し、角線加工を行う自転力のないタークスへラドロー
ル、（４）はこのタークスヘッドロールから送り出され
る引抜後の素材（１ｄ）を巻取り、引抜加工駆動源とな
る伸線機巻取ドラムである。FIG. 1 is a front view showing a conventional method for manufacturing a square wire, and FIG. 2 is a sectional view taken along line A-A. In the figure, (1a) is a material with a circular cross-sectional shape before being drawn, (lb) is the terminal of this material before being drawn, (IC) is the material being drawn, and (l
d) is a material with a rectangular cross-sectional shape after being drawn; (2) is a rotating table that rotates freely on which the material (1a) wound into a coil before being drawn is placed; (3a), (3b), (3c), ( 3d) is a rad roll that rotates with the undrawn material (1a) sent out from this rotary table to the Turks without rotational force to perform square wire processing, and (4) is a drawn material that is sent out from this Turks head roll. This is a winding drum of a wire drawing machine that winds up (1d) and serves as a driving source for drawing processing.
次に加工方法について説明する。まず、タークスヘッド
ロール（３ａ）、（３ｂ）、（３ｃ）、（３ｄ）の相対
するロール間隔を仕上寸法に合わせた後、相接するロー
ル間隔を軽く接する程度に調整する。次いで仕上寸法よ
り細くした引抜前の素材の端末（１ｂ）をタークスへラ
ドロール（３ａ）、（３ｂ）、（３ｃ）、（３ｄ）の間
を通し、引抜加工駆動源となる伸線機巻取ドラム（４）
等に巻付ける。そして、伸線機巻取ドラム（４）等を自
転させることにより、引抜後の素材（１ｄ）を巻取り、
断面形状が角形である線材を製造する。Next, the processing method will be explained. First, the distance between the opposing rolls of the Turk's head rolls (3a), (3b), (3c), and (3d) is adjusted to the finished dimensions, and then the distance between the adjacent rolls is adjusted to the extent that they lightly touch each other. Next, the end (1b) of the material before drawing, which has been made thinner than the finished size, is passed through the rad rolls (3a), (3b), (3c), and (3d) to the Turk's wire drawing machine, which serves as the driving source for the drawing process. Drum (4)
etc. Then, by rotating the wire drawing machine winding drum (4), etc., the drawn material (1d) is wound up,
A wire rod having a square cross-sectional shape is manufactured.
従来の加工装置は以上のように構成されているので、タ
ークスへラドロール（３ａ）、（３ｂ）、（３Ｃ）、（
３ｄ）の微妙な間隔調整が必要であり、ロール軸受ベア
リング精度によるバラツキおよび相接するロール間隙調
＋ＪＳ不良等に起因してパリが発生するという欠点があ
った。Since the conventional processing equipment is configured as described above, Turks Radroll (3a), (3b), (3C), (
3d) delicate spacing adjustment is required, and there is a drawback that burrs occur due to variations due to roll bearing precision and adjoining roll gap adjustment + JS defects.
この発明は上記のような従来の欠点を除去するためにな
されたもので、断面形状が角形のダイスにより、１ダイ
ス当り引抜加工可能な最大引抜抵抗力を生じさせる最大
断面減少率の８０〜９０％の断面減少率で、かつ低粘度
潤滑剤を使用して引抜加工を行うことにより、調整が容
易で、加工寸法精度を向上させることができ、かつパリ
が発生しない角線の製造方法を提案するものである。This invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology, and uses a die with a rectangular cross-section to achieve a maximum cross-sectional reduction rate of 80 to 90, which produces the maximum drawing resistance force that can be produced per die. We propose a method for manufacturing square wires that is easy to adjust, improves processing dimensional accuracy, and does not cause flashing by performing drawing processing with a cross-section reduction rate of 1.5% and using a low-viscosity lubricant. It is something to do.
第３図はこの発明の一実施例の一部を断面で示す正面図
であり、図において、（ｌａ）〜（１ｄ）、（２）およ
び（４）は第１図と同一または相当部分を示す。FIG. 3 is a front view showing a part of an embodiment of the present invention in cross section, and in the figure, (la) to (1d), (2) and (4) are the same or equivalent parts as in FIG. show.
（５）は引抜前の素材（１ａ）を通して引抜加工を行う
断面形状が角形の仕上ダイス、（６）はこの仕上ダイス
を取付けるダイスホルダー、（７）はこのダイスホルダ
ーに入れられた引抜加工用の低粘度潤滑剤である。(5) is a finishing die with a rectangular cross section that performs drawing through the material (1a) before drawing, (6) is a die holder to which this finishing die is attached, and (7) is a drawing die placed in this die holder. It is a low viscosity lubricant.
次に加工方法について説明する。ます、ダイスホルダー
（６）に仕上ダイス（５）を取付けて固定した後、低粘
度潤滑剤（７）を入れる。また引抜前の素材（１ａ）を
回転台（２）に載せ、その端末（１ｂ）を仕上線径より
細くする。そしてその端末（１ｂ）を仕上ダイス（５）
を通して引抜き、伸線機巻取ドラム（４）に巻付ける。Next, the processing method will be explained. First, after attaching and fixing the finishing die (5) to the die holder (6), add the low viscosity lubricant (7). Further, the raw material (1a) before being drawn is placed on the turntable (2), and its terminal end (1b) is made thinner than the diameter of the finished wire. Then finish the terminal (1b) with the finishing die (5)
The wire is pulled out through the wire and wound around the winding drum (4) of the wire drawing machine.
その後伸線機巻取ドラム（４）を回転させて引抜加工を
行い、引抜後の素材（Ｉｄ）を伸線機巻取ドラム（４）
に巻取り、角線を製造する。After that, the wire drawing machine winding drum (4) is rotated to perform the drawing process, and the drawn material (Id) is transferred to the wire drawing machine winding drum (4).
to produce square wire.
この場合、断面形状が円形の素線を角形ダイスに通して
引抜加工を行う際、１ダイス間断面減少率が低いと、角
部分の丸味が大きくなるため、２個以上のダイスを用い
て引抜加工する必要がある。In this case, when drawing a wire with a circular cross-section through a rectangular die, if the cross-sectional reduction rate between 1 die is low, the roundness of the corners becomes large, so two or more dies are used to draw the wire. It needs to be processed.
そこで１ダイス間加工率を次第に高めて行くと、素材は
ダイス断面形状に近づき、製品仕様を満たす形状となる
。Therefore, if the processing rate between 1 die is gradually increased, the material approaches the cross-sectional shape of the die and becomes a shape that satisfies the product specifications.
ところが、１ダイス間加工率を高めて行くと、引抜抵抗
力が材料強度を超える結果、断線する現象が生ずる。引
抜抵抗力は素材の表面状況および材質、ダイスの材質お
よび形状、引抜速度、潤滑剤の種類等の要因により変化
するため、その最大値は個々の製造条件下で調べる必要
がある。However, when the processing rate between one die is increased, the pulling resistance force exceeds the material strength, and as a result, a phenomenon of wire breakage occurs. Since the pulling resistance varies depending on factors such as the surface condition and material of the material, the material and shape of the die, the drawing speed, and the type of lubricant, its maximum value must be investigated under individual manufacturing conditions.
引抜加工可能な最大引抜抵抗力を生じさせる１ダイス間
最大断面減少率を基にテストを行った結果、引抜加工時
の断面減少率が、最大断面減少率の８０％未満の場合、
角部分の丸味が大きく、２個以−１−のダイスを用いて
製品寸法まで引抜加工を行わないと、角部分の改善がで
きない。そして断面減少率が８０％以上になると製品断
面形状仕様を満たす角線の製造が可能であるが、９０％
を越えると、外的負荷変動の影響によって素材の断線現
象が起こり易くなり、量産条件として適当でない。従っ
て１ダイス間断面減少率は、引抜加工可能な１ダイス間
Ｍ大断面減少率の８０〜９０％の箱間から届、く必要が
ある。As a result of a test based on the maximum area reduction rate between one die that produces the maximum drawing resistance force that can be used for drawing, if the area reduction rate during drawing is less than 80% of the maximum area reduction rate,
The corners have a large roundness, and the corners cannot be improved unless drawing is performed to the product size using two or more dies. When the cross-sectional reduction rate is 80% or more, it is possible to manufacture square wires that meet the product cross-sectional shape specifications, but 90%
If it exceeds this, the material is likely to break due to the influence of external load fluctuations, making it unsuitable for mass production conditions. Therefore, the cross-sectional area reduction rate between one die must reach 80 to 90% of the M large cross-sectional area reduction rate between one die that can be drawn.
一方、粘度の高い引抜加工用潤滑剤は、高断面減少率の
もとでの材料およびダイスの冷却性に劣り、一般的に低
粘度′ａ滑剤に比べて潤滑性能が優れる反面、素材の構
成がりに対して不利となる結果、角線の角部分の形状が
丸くなり易く、使用できない。従って、冷却性に優れ、
かつ角形断面が得られ易い低粘度潤滑剤を使用する必要
がある。On the other hand, high-viscosity drawing lubricants have poor cooling properties for materials and dies under high area reduction rates. As a result, the shape of the corner portion of the square wire tends to become rounded, making it unusable. Therefore, it has excellent cooling properties,
In addition, it is necessary to use a low-viscosity lubricant that can easily provide a square cross section.
次表に、本発明の実施例の試験結果を示す。表中、最大
断面減少率とは、１ダイス当り、引抜加工が可能な最大
引抜抵抗力を生じさせる断面減少率をいう。The following table shows test results for examples of the present invention. In the table, the maximum area reduction rate refers to the area reduction rate that produces the maximum drawing resistance force that allows drawing processing per die.
以上は仕上ダイス１個を使用する条件を示したが、仕上
ダイスの前に、粗成形用の前ダイスを取付け、ダイス２
個を１組として使用してもよい。The above shows the conditions for using one finishing die, but a front die for rough forming is installed in front of the finishing die, and two dies are used.
They may be used as a set.
また、従来法の欠点であった寸法精度を改善するため、
粗成形用にタークスへラドロールを使用し、ダイスと組
合せて１パス仕上加工する方法でもよく、同様の効果が
得られる。In addition, in order to improve dimensional accuracy, which was a drawback of conventional methods,
A similar effect can be obtained by using a Turk's Rad roll for rough forming and combining it with a die for one-pass finishing.
この発明によれば、断面形状が角形のダイスにより、１
ダイス当り引抜加工可能な最大引抜抵抗力を生じさせる
最大断面減少率の８０〜９０％の断面減少率で、かつ低
粘度潤滑剤を使用して引抜加工を行うようにしたので、
ダイス寸法の選択のみで加工できて、作業経験による寸
法調整時間差が解消でき、加工寸法精度が高くなるとと
もに、パリが発生しないなどの効果がある。According to this invention, a die having a rectangular cross-section can be used to
Since the drawing process was performed using a low viscosity lubricant and a cross-section reduction rate of 80 to 90% of the maximum cross-section reduction rate that produces the maximum pull-out resistance force that can be performed per die,
Machining can be performed by simply selecting the die dimensions, eliminating the difference in dimension adjustment time due to work experience, increasing the precision of machining dimensions, and eliminating the occurrence of flash.
第１図、は従来の角線製造方法を示す正面図、第２図は
そのＡ−Ａ断面図、第３図はこの発明の一実施例の一部
を断面で示す正面図である。
各図中、同一符号は同一または相当部分を示し、（１ａ
）、（ｌｃ）、 （Ｍ）は素材、（２）は回転台、（４
）は伸線機巻取ドラム、（５）は仕上ダイス、（６）は
ダイスホルダー、（７）は低粘度潤滑剤である。
代理人大岩増雄
第１図
第２図
第３図FIG. 1 is a front view showing a conventional square wire manufacturing method, FIG. 2 is a sectional view taken along the line AA, and FIG. 3 is a front view showing a part of an embodiment of the present invention in cross section. In each figure, the same reference numerals indicate the same or corresponding parts, (1a
), (lc), (M) is the material, (2) is the turntable, (4
) is a wire drawing machine winding drum, (5) is a finishing die, (6) is a die holder, and (7) is a low viscosity lubricant. Agent Masuo Oiwa Figure 1 Figure 2 Figure 3
Claims (2)
形状にする角線の製造方法において、断面形状が角線の
ダイスにより、１ダイス当り引抜加工可能な最大引抜抵
抗力を生じさせる最大断面減少率の８０〜９０％以」−
の断面減少率で、かつ低粘度潤滑剤を使用して引抜加工
を行うことを特徴とする角線の製造方法。(1) In a method of manufacturing a square wire in which a wire with a circular cross-section is made into a square cross-section by drawing, a die with a square cross-section is used to produce the maximum drawing resistance force that can be drawn per die. 80-90% of the reduction rate”-
A method for manufacturing a square wire, characterized in that drawing is performed using a low viscosity lubricant at a reduction in area of .
ーにダイスを取付けて行うことを特徴とする特許請求の
範囲第１項記載の角線の製造方法。(2) The method for manufacturing a square wire according to claim 1, wherein the drawing process is performed by attaching a die to a die holder containing a low-viscosity lubricant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14207883A JPS6033811A (en) | 1983-08-03 | 1983-08-03 | Manufacture of square wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14207883A JPS6033811A (en) | 1983-08-03 | 1983-08-03 | Manufacture of square wire rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6033811A true JPS6033811A (en) | 1985-02-21 |
Family
ID=15306919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14207883A Pending JPS6033811A (en) | 1983-08-03 | 1983-08-03 | Manufacture of square wire rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6033811A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4828353A (en) * | 1971-08-18 | 1973-04-14 |
-
1983
- 1983-08-03 JP JP14207883A patent/JPS6033811A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4828353A (en) * | 1971-08-18 | 1973-04-14 |
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