JPH0679519A - Shearing device for bar stock - Google Patents

Shearing device for bar stock

Info

Publication number
JPH0679519A
JPH0679519A JP25185092A JP25185092A JPH0679519A JP H0679519 A JPH0679519 A JP H0679519A JP 25185092 A JP25185092 A JP 25185092A JP 25185092 A JP25185092 A JP 25185092A JP H0679519 A JPH0679519 A JP H0679519A
Authority
JP
Japan
Prior art keywords
blade
bar
shearing
round hole
reverse
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.)
Withdrawn
Application number
JP25185092A
Other languages
Japanese (ja)
Inventor
Toshihiro Oka
敏博 岡
Masao Murakawa
正夫 村川
Nobuhiro Koga
伸裕 古閑
Gen Ro
言 呂
Toshio Ochi
俊夫 越智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Manyo Co Ltd
Original Assignee
Nippon Steel Corp
Manyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp, Manyo Co Ltd filed Critical Nippon Steel Corp
Priority to JP25185092A priority Critical patent/JPH0679519A/en
Publication of JPH0679519A publication Critical patent/JPH0679519A/en
Withdrawn legal-status Critical Current

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  • Shearing Machines (AREA)

Abstract

PURPOSE:To obtain each sectional face which is highly accurate and small in level difference by combing a reverse presser and a semicircular blade into a pseudo circular blade only at the time of shearing. CONSTITUTION:A pseudo circular blade is formed by additionally applying reverse pressing force with the semicircular blade 5 of a movable cutting tool 4 combined with the bar stock support face 60 of a reverse presser 6. The pseudo circular blade holds a gap Dc over the diameter D0 of a bar stock W in the shearing direction to prevent its material from being deformed due to the rotation of the bar stock W without restraining the axial movement of the bar stock W during shearing operations. This constitution thereby allows the squareness of a sectional face to be excellent, can prevent the occurrence of tongues, hold-up cracks, collapses in the sectional face, and also can make each level difference small, even when a clearance between a fixed cutting tool 1 and the movable cutting tool 4 is small.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は棒材のせん断装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar shearing device.

【0002】[0002]

【従来の技術】鍛造加工のクロップ(鍛造素材)は丸棒前
素形材をせん断加工することによって作られ、その丸棒
前素形材は、長尺の丸棒を圧延し、その丸棒圧延材の寸
法的、成分的に不良な先端部を切り落した後、定寸法た
とえば5〜6mに切断することで製造される。後者のせ
ん断は傾斜刃を用いたいわゆるシャーリング方式で実施
され、前者のせん断は、クロップの精度不良が鍛造不良
につながることから精密クロッピングが行われることが
多い。このクロッピングは、一般に、図10と図11の
ような丸穴移動刃式せん断装置が用いられていた。すな
わち、リメインダ側に丸穴刃2’を有する固定刃工具1
と棒材押え3とを配し、オフカット側に丸穴刃5’を有
する移動刃工具4’を配し、棒材部分wを丸穴刃5’に
挿入し、棒材押え3でリメインダ側の棒材Wを押えなが
ら移動刃工具4’を下すものであった。
2. Description of the Related Art A forged crop (forged material) is made by shearing a round bar preform, and the round bar preform is made by rolling a long bar. It is manufactured by cutting off the dimensionally and compositionally defective tip of the rolled material and then cutting it into a fixed size, for example, 5 to 6 m. The latter shearing is performed by a so-called shearing method using an inclined blade, and the former shearing is often performed by precision cropping because poor accuracy of the crop leads to poor forging. For this cropping, generally, a round hole moving blade type shearing device as shown in FIGS. 10 and 11 is used. That is, a fixed blade tool 1 having a round hole blade 2'on the side of the retainer
And the bar presser foot 3 are arranged, a movable blade tool 4 ′ having a round hole blade 5 ′ is arranged on the off-cut side, the bar material part w is inserted into the round hole blade 5 ′, and the rod presser 3 is used as a re-mainer. The movable blade tool 4'is lowered while pressing the side bar W.

【0003】[0003]

【発明が解決しようとする課題】この丸穴移動刃式せん
断方式は、シャーリング方式の場合のような被せん断材
(特にオフカット側)のつぶれが大きくなったり、直角度
が不良となるなどの精度不良が避けられ、切口面の直角
度を良好なものとすることができ、タング(かさぶた)や
滞留クラックの発生も回避できる利点を有している。し
かしながら、この丸穴移動刃式せん断方式は大きな問題
がある。すなわち、丸穴刃は穴径Dtが固定されている
ため、棒材Wの直径D0が精度のよい場合には問題ない
が、クロップ用の棒材は圧延で作られる関係からどうし
ても精度にバラツキが大きく、径のバラツキや、長尺で
あるための長手方向の曲りを有している。長手方向の曲
りについてはレベラによって矯正可能であるが、径のバ
ラツキは避けられない。このため、この丸穴移動刃工具
方式では棒材の丸穴刃内への挿入不良が頻発し、円滑で
安定した精密せん断を行うことが困難であった。
This round hole moving blade type shearing method is a sheared material like the shearing method.
It is possible to avoid poor accuracy such as large crushing (especially on the off-cut side) and poor squareness, and it is possible to make the squareness of the cut surface favorable, and tongue (scab) and retention cracks It also has the advantage that it can be avoided. However, this round hole moving blade type shearing method has a serious problem. That is, since the hole diameter Dt of the round hole blade is fixed, there is no problem when the diameter D 0 of the bar W is high in accuracy, but the bar for cropping is inconsistent in accuracy because it is manufactured by rolling. Has a large diameter, and has a variation in diameter and a longitudinal bend due to its long length. Bending in the longitudinal direction can be corrected by a leveler, but variations in diameter are unavoidable. Therefore, in this round hole moving blade tool system, defective insertion of a rod into the round hole blade frequently occurs, and it is difficult to perform smooth and stable precision shearing.

【0004】本発明は前記のような問題点を解消するた
めに研究して創案されたもので、その第1の目的とする
ところは、棒材に径のバラツキや長手方向の曲りがあっ
ても棒材のオフカット部分の挿入に支障なく、高精度な
切口面性状、すなわち直角度がよく、タングや滞留クラ
ックの発生もなく、段差も小さい切口面を得ることがで
きるせん断装置を提供することにある。また、本発明の
第2の目的は、棒材の径が大小に変化しても、同一の刃
を用いて高精度な切口面性状、すなわち直角度がよく、
タングや滞留クラックの発生もなく、段差も小さい切口
面を得ることができるせん断装置を提供することにあ
る。
The present invention was made by research to solve the above problems. The first object of the present invention is that the bar material has variations in diameter and bending in the longitudinal direction. Also provides a shearing device that does not hinder the insertion of the off-cut portion of the bar material, has a highly accurate cut surface property, that is, has a good squareness, does not generate tongues and retention cracks, and can obtain a cut surface with a small step. Especially. A second object of the present invention is to provide a highly accurate cut surface property, that is, a good squareness, using the same blade, even if the diameter of the bar material changes greatly.
It is an object of the present invention to provide a shearing device capable of obtaining a cut surface having a small step without generation of a tongue or a retention crack.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
本発明は丸穴移動刃工具方式の不具合がなく、しかもこ
の方式による場合と実質的に同程度の高精度せん断を実
現し得るようにすべく特殊な工具構造を採用したもの
で、すなわち、半丸穴刃を有する固定刃工具と、該固定
刃工具と対向側からリメインダ側の棒材を押える棒押え
と、半丸穴刃を有する移動刃工具と、該移動刃工具に対
向する棒材支え面を有する逆押えを備え、前記逆押え
が、棒材の挿入時には前記移動刃工具の半丸穴刃と離間
し、せん断中は前記移動刃工具の半丸穴刃とで擬似丸刃
を構成し、しかもその擬似丸刃が、オフカット側の棒材
部分の回転方向の変形のみを拘束させるように棒材直径
との間に隙間を有している構成としたものである。ま
た、第2の目的を達成するため本発明は、擬似丸刃と棒
材直径との隙間寸法調整機構を有している構成としたも
のである。本発明において「棒材」は、丸棒前素形材を
製造するための圧延棒材と、丸棒前素形材を含むもので
ある。また、本発明装置は1本せん断、複数本同時せん
断のずれにも適用することができる。
In order to achieve the above object, the present invention is free from the problems of the round hole moving blade tool system, and can realize a high precision shearing of substantially the same level as in this system. A special tool structure is adopted to achieve this, that is, it has a fixed blade tool having a semi-round hole blade, a bar retainer for pressing the bar material on the reminder side from the side opposite to the fixed blade tool, and a semi-round hole blade. A movable blade tool and a reverse presser having a bar supporting surface facing the movable knife tool, the reverse presser is separated from the semi-round hole blade of the movable blade tool at the time of insertion of a bar, and during shearing, A pseudo round blade is configured with the semicircular hole blade of the moving blade tool, and the pseudo round blade has a gap between it and the diameter of the bar so that it restrains only the deformation of the bar part on the off-cut side in the rotational direction. It is configured to have. Further, in order to achieve the second object, the present invention is configured to have a clearance size adjusting mechanism between the pseudo round blade and the bar diameter. In the present invention, the "bar material" includes a rolled bar material for manufacturing a round bar preform and a round bar preform. Further, the device of the present invention can be applied to the deviation of single shear and simultaneous shearing of a plurality of strands.

【0006】[0006]

【作用】本発明においては、移動刃工具が丸穴刃でなく
半丸穴刃であるが、その移動刃工具と対向する独立した
逆押えを用いて棒材を支持するようにしている。したが
って、せん断に際してオフカットすべき棒材部分の移動
刃工具側への挿入位置決めを自由空間で行うことがで
き、棒材の径にバラツキがあっても、また長手方向に曲
りがあっても支障がない。そして、移動刃工具の半丸穴
刃と逆押えの棒材支え面とを合わせ逆押え力を付加する
ことにより擬似丸穴刃が構成され、その擬似丸穴刃は棒
材の直径とせん断方向で隙間をもっており、せん断中に
棒材の軸方向の動きを拘束することなく棒材の回転によ
る材料の変形のみを防止する。このため、切口面の直角
度が良好で、また、固定刃工具と移動刃工具とのクリア
ランスが小さくても、切口面にタング(かさぶた)や滞留
クラックが発生せず、つぶれも発生せず、段差も小さく
することができる。また、擬似丸穴刃と棒材直径との隙
間寸法調整機構を有している場合には、棒材の直径の変
化に応じた最適な前記隙間を設定でき、したがって、棒
材外径が変わっても一組の移動刃工具と逆押えとで上記
した精密せん断を行うことができる。
According to the present invention, the movable blade tool is not a round hole blade but a semi-round hole blade, but the bar material is supported by using an independent reverse pressing member facing the movable blade tool. Therefore, the insertion and positioning of the rod portion to be off-cut during shearing can be performed in the free space in the free space, and even if there is variation in the diameter of the rod or there is bending in the longitudinal direction, there is no problem. There is no. The semi-round hole blade of the moving blade tool and the bar material supporting surface of the reverse presser are combined to apply a reverse pressing force to form a pseudo round hole blade.The pseudo round hole blade has a diameter of the bar material and a shearing direction. There is a gap in between, and only deformation of the material due to rotation of the bar is prevented without restraining axial movement of the bar during shearing. Therefore, the squareness of the cut surface is good, and even if the clearance between the fixed blade tool and the moving blade tool is small, tangs (scabs) and retention cracks do not occur on the cut surface, and crushing does not occur, The step can also be reduced. In addition, when the gap size adjusting mechanism between the pseudo round hole blade and the bar diameter is provided, the optimum gap can be set according to the change in the diameter of the bar, and therefore the outer diameter of the bar changes. However, the above-mentioned precision shearing can be performed with a pair of movable blade tools and a reverse presser.

【0007】以下本発明の実施例を添付図面に基いて説
明する。図1と図2は本発明による棒材せん断装置の第
1実施例を示している。1は固定刃工具であり、ベッド
状の本体10の前端部に上方に開口した半丸穴刃2を固
定しており、該半丸穴刃2の上側に棒押え3を配してい
る。この棒押え3は、周知のように棒材Wの挿入時には
逃げ、せん断中にスプリング力や流体圧シリンダなどに
よって棒材のリメインダ側に軸線と直角方向から押え力
Phを付加する手段である。
Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show a first embodiment of a bar shearing device according to the present invention. Reference numeral 1 denotes a fixed blade tool, which fixes a semicircular hole blade 2 opening upward to a front end portion of a bed-shaped main body 10, and a rod holder 3 is arranged above the semicircular hole blade 2. As is well known, the rod retainer 3 escapes when the rod W is inserted, and is pressed by a spring force or a fluid pressure cylinder during shearing to the retainer side of the rod from a direction perpendicular to the axis.
It is a means of adding Ph.

【0008】4は移動刃工具であり、ブロック状をなし
下方に開口した半丸穴刃5を、ラムで昇降されるホルダ
40に強固に固定している。6は本発明で特徴とする逆
押えであり、移動刃工具4と独立しかつ半丸穴刃5の下
方に設けられ、加圧手段7により所定の逆押え力Pcを
付加するようになっている。加圧手段7はスプリングな
どでもよいが、この例では流体圧シリンダが用いられて
おり、ポンプと方向切換弁とリリーフ弁などによって作
動されるようになっている。
Reference numeral 4 denotes a movable blade tool, and a semicircular hole blade 5 having a block shape and opened downward is firmly fixed to a holder 40 which is elevated and lowered by a ram. Reference numeral 6 is a reverse presser featured in the present invention, which is provided independently of the movable blade tool 4 and below the semi-circular hole blade 5, and applies a predetermined reverse presser force Pc by the pressing means 7. There is. The pressurizing means 7 may be a spring or the like, but a fluid pressure cylinder is used in this example, and is operated by a pump, a direction switching valve, a relief valve, and the like.

【0009】逆押え6は、移動刃工具4の半丸穴刃5と
対をなすように上向きに開口した半丸穴状の棒材支え面
60を有し、これら棒材支え面60と半丸穴刃5とで擬
似丸穴刃が形成される。この擬似丸穴刃はせん断開始前
はもとよりせん断中においても、棒材部分wに直接逆押
え力Pcを付加させない大きさである。すなわち、半丸
穴刃5の頂部から棒材支え面60の底部までの寸法Tc
が棒材部分wの直径D0よりも大きく設定され、棒材直
径D0との間にせん断方向で隙間Dcが形成されてい
る。
The reverse presser 6 has a bar support surface 60 in the shape of a semi-round hole that opens upward so as to make a pair with the semi-circular hole blade 5 of the movable blade tool 4. A pseudo round hole blade is formed with the round hole blade 5. This pseudo-round hole blade has a size such that the reverse pressing force Pc is not directly applied to the bar material portion w during the shearing as well as before the shearing is started. That is, the dimension Tc from the top of the half-round hole blade 5 to the bottom of the bar supporting surface 60
Is set to be larger than the diameter D 0 of the bar material portion w, and a gap Dc is formed between the bar material portion w and the bar material diameter D 0 in the shearing direction.

【0010】前記隙間Dc(Tc−D0)は許容される切
口面直角度に応じて決められるが、一般に、棒材直径D
0の5%以下好適には2%以下である。これを超える隙
間では切口面直角度が悪化し、タングの発生を避けられ
ない。そこで、この第1実施例ではある直径公差幅をも
って製造される棒材に最適な隙間Dcを創成するための
調整機構を有している。前記調整機構はこの実施例では
逆押え6側に設けられている。詳しくは、逆押え6はブ
ロック状をなし、上面に開口した棒材支え面60を有し
ているが、上面は水平でなく図1に示すように所定の角
度の傾斜面61となっている。この例では傾斜は右下が
りすなわち固定刃工具1に近づくほど低位となってお
り、したがって、棒材支え面60は右側に向かうほど実
質的に浅くなっている。一方、移動刃工具4の半丸穴刃
5の下面は、前記逆押え6の傾斜面61に対応するよう
に所定角度の傾斜面51となっており、したがって、半
丸穴刃5は左側に向かうほど浅くなっている。前記逆押
え6は、加圧手段7に固定された昇降自在な支持体7a
の凹入部71に前後(図面では左右)に移動調整可能に嵌
装され、かかる逆押え6の移動で前記隙間Dcの調整を
行うようにしている。
The gap Dc (Tc-D 0 ) is determined according to the allowable cut surface perpendicularity, but in general, the rod diameter D
It is 5% or less of 0 , and preferably 2% or less. If the gap exceeds this, the perpendicularity of the cut surface deteriorates, and tangs cannot be avoided. Therefore, the first embodiment has an adjusting mechanism for creating an optimum gap Dc for a bar material manufactured with a certain diameter tolerance width. The adjusting mechanism is provided on the reverse presser 6 side in this embodiment. More specifically, the reverse presser 6 is in the form of a block and has a bar supporting surface 60 that is open on the upper surface, but the upper surface is not horizontal but an inclined surface 61 at a predetermined angle as shown in FIG. . In this example, the inclination is downward to the right, that is, lower toward the fixed blade tool 1, and therefore the bar supporting surface 60 is substantially shallower toward the right side. On the other hand, the lower surface of the semicircular hole blade 5 of the movable blade tool 4 is an inclined surface 51 having a predetermined angle so as to correspond to the inclined surface 61 of the reverse presser 6, and therefore the semicircular hole blade 5 is moved to the left. It is getting shallower toward you. The reverse presser 6 is a support body 7a fixed to a pressurizing means 7 and movable up and down.
It is fitted in the recessed portion 71 so as to be movable back and forth (left and right in the drawing), and the gap Dc is adjusted by the movement of the reverse presser 6.

【0011】逆押え6の移動機構や移動操作方法(手
動、自動)は任意である。この例では、固定刃工具1の
本体10に高さ方向に長孔100を設け、この長孔10
0を通して調整軸65が伸び、逆押え6に連結されてい
る。そして調整軸65は本体10に設けた縦穴101に
昇降自在なアクチュエータ(たとえばシリンダ)66に結
合され、アクチュエータ66の作動による調整軸65の
進退で逆押え6が移動されるようになっている。調整軸
65はスクリューでもよく、この場合には、逆押え6の
雌ねじに螺合させアクチュエータとしてモータ類を使用
して調整軸を回転させる。逆押え6の移動調整は必ずし
も本体側からでなくてもよい。すなわち、支持体7aの
左端に壁を設け、これを通してスクリュー形あるいはピ
ストン形の調整軸を逆押えに取付け、壁に固定したアク
チュエータで調整軸を回転あるいは進退させることで逆
押え6を移動させるようにしてもよい。
The moving mechanism and the moving operation method (manual or automatic) of the reverse presser 6 are arbitrary. In this example, the main body 10 of the fixed blade tool 1 is provided with a long hole 100 in the height direction.
The adjusting shaft 65 extends through 0 and is connected to the reverse presser foot 6. The adjusting shaft 65 is coupled to a vertical hole 101 provided in the main body 10 and an actuator (for example, a cylinder) 66 that can be moved up and down, and the reverse presser 6 is moved by moving the adjusting shaft 65 forward and backward by the operation of the actuator 66. The adjusting shaft 65 may be a screw, and in this case, the adjusting shaft is rotated by screwing the female screw of the reverse presser 6 and using a motor as an actuator. The movement adjustment of the reverse presser 6 does not necessarily have to be from the main body side. That is, a wall is provided at the left end of the support 7a, through which a screw-type or piston-type adjustment shaft is attached to the reverse presser, and the reverse clamp 6 is moved by rotating or advancing the adjustment shaft with an actuator fixed to the wall. You may

【0012】この第1実施例において棒材Wをせん断す
るにあたっては、逆押え6の棒材支え面60の底ライン
が固定刃工具1の半丸穴刃2の底ラインより少し下位に
位置するように各加圧手段7により支持体7aを上昇さ
せ、逆押え6に逆押え力Pcを付加した状態にセットす
る。上記逆押え6の位置は加圧手段7がシリンダである
場合ピストンロッド上昇限で実現してもよいし、あるい
は図示しないが機械的なストッパで実現してもよい。逆
押え力Pcは、せん断中に半丸穴状の棒材支え60と半
丸穴刃5とで形成される擬似丸穴を維持し、材料がその
軸線と直交する水平軸線のまわりに回転するのを拘束す
るに十分なだけの大きさが必要であり、一般に、せん断
荷重の10%以上好適には20〜30%である。それ以
上逆押え力Pcを大きくすることはせん断荷重を増加さ
せるため好ましくない。逆押え力Pcは加圧手段7がシ
リンダである場合、リリーフ弁の制御によって自由に設
定することができる。前記した状態では移動刃工具4は
上位にあり、逆押え上方は開放空間にあるため、棒材W
は直径に公差を有していても、また、長手方向に曲りが
あっても容易に棒材部分wを配置することができる。次
に棒押え3を下して棒材Wのリメインダ側に押え力Ph
を付加する。その押え力Phは、少なくともせん断荷重
の10%以上、好適には20〜30%である。
When shearing the bar W in the first embodiment, the bottom line of the bar supporting surface 60 of the reverse presser 6 is located slightly lower than the bottom line of the semi-round hole blade 2 of the fixed blade tool 1. As described above, the support 7a is raised by each pressurizing means 7, and the reverse pressing force Pc is set to the state in which the reverse pressing force Pc is applied. The position of the reverse presser 6 may be realized by the piston rod rising limit when the pressurizing means 7 is a cylinder, or by a mechanical stopper (not shown). The reverse pressing force Pc maintains the pseudo round hole formed by the bar support 60 in the shape of a semi-round hole and the semi-round hole blade 5 during shearing, and the material rotates about the horizontal axis orthogonal to its axis. Must be large enough to constrain, and is generally 10% or more, preferably 20 to 30% of the shear load. It is not preferable to increase the reverse pressing force Pc more than that because the shear load is increased. The reverse pressing force Pc can be freely set by controlling the relief valve when the pressurizing means 7 is a cylinder. In the state described above, the movable blade tool 4 is in the upper position, and the upper part of the reverse presser is in the open space.
The bar material portion w can be easily arranged even if the diameter has a tolerance, and the diameter is curved in the longitudinal direction. Next, lower the rod retainer 3 and press the rod W against the retainer side with the pressing force Ph.
Is added. The pressing force Ph is at least 10% or more, preferably 20 to 30% of the shear load.

【0013】そして次に移動刃工具4を降下させる。こ
うすれば、半丸穴刃5の傾斜面41が、逆押え力が付加
されている逆押え6の上面の傾斜面61と強接し、半丸
穴刃5と棒材支え面60とにより棒材部分wの直径D0
りも寸法が大きい擬似丸穴刃が形成される。この状態で
移動刃工具4をさらに降下させれば、逆押え6は移動刃
工具4と一体に降下し、半丸穴刃5が棒材部分wに接し
てせん断が開始される。このせん断中、逆押え6から逆
押え力Pcを付与しているため、せん断に伴う材料の回
転方向の変形が拘束される。しかし、棒材支え面60は
棒材部分wの周面との間に隙間Dcを保持しており、し
たがって、棒材部分wは軸方向の動きが拘束されない。
このため、せん断中の材料内部の応力状態が刃先付近の
静水圧が高くならず、見掛け上の材料の延性が増さな
い。このため、丸穴移動刃工具の場合と同じように直角
度が許容値を満足し、つぶれも小さく、さらにタングな
どの表面欠陥のない、段差(凹凸)も小さな高精度の切口
面が得られる。なお、材料のせん断が完了した以降は逆
押え力は解除され逆押え6は下方に逃げてもよく、それ
はリリーフ弁を作動させることによって実現される。
Then, the movable blade tool 4 is lowered. By doing so, the inclined surface 41 of the semi-round hole blade 5 makes strong contact with the inclined surface 61 of the upper surface of the reverse presser 6 to which the reverse pressing force is applied, and the semi-round hole blade 5 and the bar material supporting surface 60 cause the rod A pseudo round hole blade having a size larger than the diameter D 0 of the material portion w is formed. When the moving blade tool 4 is further lowered in this state, the reverse presser 6 is lowered together with the moving blade tool 4, and the half-round hole blade 5 comes into contact with the bar material portion w to start shearing. Since the reverse pressing force Pc is applied from the reverse pressing member 6 during the shearing, the deformation in the rotational direction of the material due to the shearing is restricted. However, the rod supporting surface 60 holds a gap Dc between the rod supporting surface 60 and the peripheral surface of the rod portion w, and therefore, the rod portion w is not restrained from moving in the axial direction.
Therefore, the stress state inside the material during shearing does not increase the hydrostatic pressure near the cutting edge, and the apparent ductility of the material does not increase. Therefore, as in the case of the circular hole moving blade tool, the squareness satisfies the allowable value, the crushing is small, and there is no surface defect such as a tongue, and a highly precise cut surface with a small step (unevenness) can be obtained. . After the material is completely sheared, the reverse pressing force may be released and the reverse pressing 6 may escape downward, which is realized by operating the relief valve.

【0014】そして、次のロットで棒材Wの直径が変化
した場合には、該ロットのせん断を開始する前に、調整
軸65を進退ないし回転させるもので、それにより逆押
え6は左または右に移動し、左に移動すれば棒材支え面
60の高さレベルが上昇しTcの寸法が小さくなる。右
に移動すればその逆になる。したがって、棒材Wの直径
に応じた最適隙間を形成することができる。
When the diameter of the bar W changes in the next lot, the adjusting shaft 65 is advanced or retracted or rotated before the shearing of the lot is started, whereby the reverse presser 6 is moved to the left or If it moves to the right and moves to the left, the height level of the bar supporting surface 60 rises and the size of Tc becomes smaller. Move to the right and vice versa. Therefore, it is possible to form the optimum gap according to the diameter of the rod W.

【0015】図3ないし図5は、本発明の第2実施例を
示している。この第2実施例も、棒材の回転方向の変形
のみを拘束すべく棒材外径に対しせん断方向に最適な隙
間Dcを形成する調整機構を有している。この第2実施
例は、移動刃工具4側に調整機構を設けて半丸穴刃5の
頂部と逆押え6の棒材支え面60の底部間の寸法を変化
させるようにしている。12は移動刃工具4を昇降する
ラムであり、13はラム12に固定されたプレートであ
り、ホルダ40はプレート13にクランパ14により固
定されている。ホルダ40は下部右側にタイロッドなど
によって半丸穴刃5を固定している。
3 to 5 show a second embodiment of the present invention. This second embodiment also has an adjusting mechanism for forming an optimum gap Dc in the shearing direction with respect to the outer diameter of the bar so as to restrict only the deformation of the bar in the rotational direction. In the second embodiment, an adjusting mechanism is provided on the side of the movable blade tool 4 to change the dimension between the top of the semi-round hole blade 5 and the bottom of the bar material supporting surface 60 of the reverse presser 6. Reference numeral 12 is a ram for moving the movable blade tool 4 up and down, 13 is a plate fixed to the ram 12, and the holder 40 is fixed to the plate 13 by a clamper 14. The holder 40 has a semi-round hole blade 5 fixed to the lower right side by a tie rod or the like.

【0016】前記ホルダ40には少なくとも2本の平行
な縦穴400,400が設けられ、それら縦穴400,
400に支持ロッド15,15が摺動可能にはめられ、
支持ロッド15,15の下部には隙間調整ブロック16
を固定している。隙間調整ブロック16は前記半丸穴刃
5の背後に位置しているが、溝穴160の底からブロッ
ク下面161までの深さh1は、この例では半丸穴刃5
の入口から頂部50までの深さh2よりも大きく、した
がって溝穴160は正面から見て半切長穴状をなしてい
る。そして、支持ロッド15,15は上部鍔との間に介
装した押し上げばね17,17によってホルダ上部に固
定した押え板18に当接するように上方に引き上げら
れ、図3に示す後退状態において隙間調整ブロック16
の下面161は半丸穴刃5の下面51よりも下位レベル
に位置される。
The holder 40 is provided with at least two parallel vertical holes 400, 400.
The support rods 15, 15 are slidably fitted to 400,
A gap adjusting block 16 is provided below the support rods 15, 15.
Is fixed. The gap adjusting block 16 is located behind the semi-round hole blade 5, but the depth h 1 from the bottom of the slot 160 to the block lower surface 161 is, in this example, the semi-round hole blade 5.
Is greater than the depth h 2 from the inlet to the top 50, and thus the slot 160 is in the shape of a half-cut slot when viewed from the front. Then, the support rods 15 and 15 are pulled up by the push-up springs 17 and 17 interposed between the support rods 15 and 17 so as to come into contact with the holding plate 18 fixed to the upper portion of the holder, and the clearance is adjusted in the retracted state shown in FIG. Block 16
The lower surface 161 of the blade is positioned at a lower level than the lower surface 51 of the half-round hole blade 5.

【0017】一方、ラム12には支持ロッド15,15
の軸線と直交するように偏心軸19が横設されており、
各偏心部190,190には、軸受ブロック20と、押
し上げばね21によって軸受ブロック20に上面が常時
接するように付勢された受圧ピン22とが配されてい
る。上記付勢状態で受圧ピン22の下端と支持ロッド1
5の上端は接している。偏心軸19の偏心量はたとえば
3〜10mmの範囲で選択すればよい。そして、偏心軸1
9は端部にウオームなどの駆動歯車192と係合する歯
車190を有している。逆押え6は流体圧シリンダから
なる加圧手段7によって所定の逆押え力が付与されるよ
うになっている。前記半丸穴刃5に対応する位置に棒材
支え面60を有しているが、棒材支え面60は必ずしも
半丸穴刃5の曲率半径と同じである必要はなく、半丸穴
刃5よりも適度に小さな曲率半径であってもよい。
On the other hand, the ram 12 has support rods 15, 15
The eccentric shaft 19 is provided so as to be orthogonal to the axis line of
The eccentric portions 190, 190 are provided with a bearing block 20 and a pressure receiving pin 22 urged by a push-up spring 21 so that the upper surface of the bearing block 20 is always in contact with the bearing block 20. In the biased state, the lower end of the pressure receiving pin 22 and the support rod 1
The upper ends of 5 touch. The eccentricity of the eccentric shaft 19 may be selected within the range of 3 to 10 mm, for example. And eccentric shaft 1
9 has a gear 190 at its end that engages with a drive gear 192 such as a worm. A predetermined reverse pressing force is applied to the reverse presser 6 by a pressurizing means 7 formed of a fluid pressure cylinder. Although the bar material supporting surface 60 is provided at a position corresponding to the semi-round hole blade 5, the bar material supporting surface 60 does not necessarily have to have the same radius of curvature as the semi-round hole blade 5, The radius of curvature may be appropriately smaller than 5.

【0018】この第2実施例でも、棒材Wを送り、棒材
部分wを予め押し上げてある逆押え6上に所要長さ突き
出す。図3のように移動刃工具4は上方にあるため、棒
材部分wの挿入は何の支障もない。次いで、棒押え3に
よりリメインダ側の棒材部分を押えつつ、ラム12を下
して移動刃工具4を下降させる。こうすれば、半丸穴刃
5とオーバラップ状に組み合わされている隙間調整ブロ
ック16の下面161が逆押え6の上面61に接し、逆
押え6に前記した所定の逆押え力Pcが付与されている
ことにより、せん断方向に棒材直径D0よりも大きな寸
法Tcを持つ擬似丸穴が形成される。この状態でラム1
2を急降下させれば、移動刃工具4と逆押え6は一体に
なって降下し、固定刃工具1の半丸穴刃2と半丸穴刃5
とでせん断が行われ、前記擬似丸穴と棒材直径D0との
隙間Dcがせん断中も保たれるため、直角度が良好でタン
グの発生もなく、段差の小さな切口面を有する高精度切
口面が得られる。
Also in this second embodiment, the rod W is fed and the rod portion w is pushed out by the required length onto the reverse presser 6 which has been pushed up in advance. Since the movable blade tool 4 is located above as shown in FIG. 3, there is no problem in inserting the bar material portion w. Next, the ram 12 is lowered and the moving blade tool 4 is lowered while the rod retainer 3 is holding the rod member portion on the reminder side. By doing so, the lower surface 161 of the gap adjusting block 16 which is combined with the half-round hole blade 5 in an overlapping manner comes into contact with the upper surface 61 of the reverse presser 6, and the predetermined reverse presser force Pc is applied to the reverse presser 6. As a result, a pseudo round hole having a dimension Tc larger than the rod diameter D 0 is formed in the shear direction. Ram 1 in this state
When 2 is suddenly lowered, the movable blade tool 4 and the reverse presser 6 are integrally lowered, and the semi-circular hole blade 2 and the semi-circular hole blade 5 of the fixed blade tool 1
Since the shearing is performed by and the gap Dc between the pseudo-round hole and the bar diameter D 0 is maintained during the shearing, the squareness is good, the tongue does not occur, and the cut surface with a small step is highly accurate. The cut surface is obtained.

【0019】また、棒材の直径がロットによって変化し
た場合には、せん断に先立ち、棒材Wの直径に応じて駆
動歯車192を駆動するものであり、こうすれば偏心軸
19が回転し、その回転角に応じて軸受ブロック20,
20を介して受圧ピン22,22が押し下げられ、これ
に接する支持ロッド15,15が押し下げられるため、
隙間調整ブロック16が図3の状態から突き出される。
隙間調整ブロック16は下面161が半丸穴刃5の下面
51よりも下位レベルにあるため、隙間調整ブロック1
6の突き出し長さを長くすれば、逆押え6に対する受圧
位置が下がる。したがって、半丸穴刃5と逆押え6とで
作られる擬似丸穴の寸法Tcは大きくなる。隙間調整ブ
ロック16の突き出し長さを小さくすれば、逆に寸法T
cは小さくなる。したがって、棒材直径の計測データに
応じて駆動歯車192を駆動制御することにより直径公
差幅にも即座に対応した適正隙間Dcを形成することが
できる。
When the diameter of the bar changes depending on the lot, the drive gear 192 is driven in accordance with the diameter of the bar W prior to shearing. In this way, the eccentric shaft 19 rotates, Depending on the rotation angle, the bearing block 20,
Since the pressure receiving pins 22 and 22 are pushed down via 20 and the support rods 15 and 15 contacting this are pushed down,
The gap adjusting block 16 is projected from the state shown in FIG.
Since the lower surface 161 of the gap adjusting block 16 is at a lower level than the lower surface 51 of the semi-round hole blade 5, the gap adjusting block 1
If the protrusion length of 6 is increased, the pressure receiving position for the reverse presser 6 is lowered. Therefore, the size Tc of the pseudo round hole formed by the semi-round hole blade 5 and the reverse presser 6 becomes large. If the protrusion length of the gap adjusting block 16 is reduced, the dimension T
c becomes small. Therefore, by driving and controlling the drive gear 192 according to the measurement data of the bar diameter, it is possible to immediately form the appropriate clearance Dc corresponding to the diameter tolerance width.

【0020】上記実施例においても、せん断速度は、特
に切口面の直角度(特に冷間鍛造業界で採用されている
許容値90±2°以内)を得る目的から、慣用の棒材せ
ん断機で用いられている0.5m/sよりも上昇させ、
いわゆる高速度せん断の領域に持っていくことが好まし
い。すなわち、せん断速度は1m/s以上好適には2〜
4m/sである。それ以上のせん断速度は機械の衝撃な
どから避けるべきである。固定刃工具1の半丸穴刃2と
移動刃工具4の半丸穴刃5とのクリアランスcは切口面
直角度の向上や段差の減少の点から0.5mm未満ことに
0.3mm以下が好ましい。
Also in the above embodiment, the shear rate is determined by using a conventional bar shearing machine for the purpose of obtaining the squareness of the cut surface (in particular, within the allowable value of 90 ± 2 ° adopted in the cold forging industry). Increased from 0.5m / s used,
It is preferable to bring it to the so-called high-speed shearing region. That is, the shear rate is 1 m / s or more, preferably 2 to
It is 4 m / s. Higher shear rates should be avoided from mechanical shock. The clearance c between the semicircular hole blade 2 of the fixed blade tool 1 and the semicircular hole blade 5 of the movable blade tool 4 is less than 0.5 mm and 0.3 mm or less from the viewpoint of improving the perpendicularity of the cut surface and reducing the step. preferable.

【0021】次に本発明のせん断装置を使用してせん断
実験を行った結果を示す。実験条件は、せん断速度Vを
1,2,3m/sとし、工具クリアランスCを0.2mmとし、下
記表1に示す機械的特性と化学成分(炭素含有量が異な
る)の2種類の丸棒材(直径:D0=φ10±0.05mm)
を、オフカット長さLを30mmとしてせん断した。
Next, the results of a shearing experiment using the shearing device of the present invention will be shown. The experimental conditions were shear speed V of 1,2,3 m / s, tool clearance C of 0.2 mm, and two types of round bar materials with mechanical properties and chemical components (different carbon contents) shown in Table 1 below. (Diameter: D 0 = φ10 ± 0.05mm)
Was sheared with an off-cut length L of 30 mm.

【0022】[0022]

【表1】 [Table 1]

【0023】せん断装置は図1と図2に示すものを使用
した。移動刃工具は、厚さ50mmのブロックにR5.5mm
の半丸穴刃を形成したものを使用し、固定刃工具はR
5.5mmの半丸穴刃を使用した。逆押えはR5.5mmの
半丸穴状受け面を有し、上面に斜面を有しているものを
使用した。逆押えは支持体にスクリューねじで移動可能
に取付け、逆押えには油圧シリンダによって500kgf
の逆押え力を付与した。棒押えの押え力は500kgfと
した。2種類の丸棒について擬似丸穴刃の頂部から逆押
えの棒材受け面底部間の寸法Tcと棒材直径D0とのせ
ん断方向隙間Dc(Tc-D0)を前記逆押えの移動により
0,0.2,0.5,1.0mmの4種類に設定した。上記
条件でせん断を行った結果を示すと図6と図7のとおり
である。図6は隙間Dcと直角度θの関係を示してお
り、隙間Dcが0〜0.5mmの範囲であれば、すべての
せん断速度で公差90°±2°以内の良好な直角度切口
面が得られている。図7はせん断速度V=2m/sにおけ
る隙間Dcとつぶれの関係を示しており、隙間Dcが小
さいほどつぶれも少ない。図8は材質の切口面の性状
を示し、図9は材質の切口面の性状を示している。両
図はいずれも隙間Dcを0.2mmとした場合であり、
(a)はせん断速度2m/s、(b)はせん断速度3m/sである。こ
れらから明らかなように、切口面にタングや滞留クラッ
クがなく、段差(凹凸)も小さい平滑な性状が得られてい
る。なお、隙間Dcは小さいほどより低速度でタングが
消滅する。材質では図示しないが隙間Dcが0.5m
mの場合、せん断速度3m/sでタングは発生しなかった。
材質では、Dc=0.2mmでV≧1m/s、DC=0.5mm
ではV≧2m/sの条件域で同じくタングや滞留クラック
の発生のない切口面が得られた。
As the shearing device, the one shown in FIGS. 1 and 2 was used. The movable blade tool is R5.5mm in a block with a thickness of 50mm.
Uses a semi-round hole blade with a fixed blade tool of R
A 5.5 mm semi-round hole blade was used. As the reverse presser, one having an R5.5 mm semi-round hole-shaped receiving surface and an inclined surface on the upper surface was used. The reverse presser is movably attached to the support with a screw, and the reverse presser is 500 kgf by a hydraulic cylinder.
The reverse pressing force of The pressing force of the bar presser was 500 kgf. With respect to two types of round bars, the gap Dc (Tc-D 0 ) in the shearing direction between the dimension Tc between the top of the pseudo-round hole blade and the bottom of the bar material receiving surface of the bar presser and the bar material diameter D 0 is moved by moving the bar presser. Four types of 0, 0.2, 0.5 and 1.0 mm were set. The results of shearing under the above conditions are shown in FIGS. 6 and 7. FIG. 6 shows the relationship between the clearance Dc and the squareness θ. If the clearance Dc is in the range of 0 to 0.5 mm, a good squareness cut surface with a tolerance of 90 ° ± 2 ° at all shear rates is obtained. Has been obtained. FIG. 7 shows the relationship between the clearance Dc and the collapse at the shearing speed V = 2 m / s. The smaller the clearance Dc, the less the collapse. FIG. 8 shows the properties of the cut surface of the material, and FIG. 9 shows the properties of the cut surface of the material. Both figures show the case where the gap Dc is 0.2 mm.
(a) Shear speed 2 m / s, (b) Shear speed 3 m / s. As is clear from these, there is no tongue and no retention cracks on the cut surface, and smooth properties with small steps (unevenness) are obtained. The smaller the gap Dc, the slower the tongue disappears. Although not shown in the material, the gap Dc is 0.5 m
In the case of m, tongue did not occur at a shear rate of 3 m / s.
As for material, Dc = 0.2mm, V ≧ 1m / s, DC = 0.5mm
In the case of V ≧ 2 m / s, the same cut surface without tongue or retention crack was obtained.

【0024】[0024]

【発明の効果】以上説明した本発明の請求項1によると
きには、半丸穴刃を有する移動刃工具と該工具と分離し
て対向する逆押えを併用し、せん断時だけ逆押えと半丸
穴刃とで擬似丸刃を形成し、その擬似丸刃の直径方向の
寸法を棒材直径との間で隙間を持たせるように固定して
せん断するため、オフカット側の棒材部分の軸方向の動
きが拘束されず棒材の回転方向の変形だけを防止され、
丸穴移動刃と同様な直角度が良好でタングなどの発生が
なく、段差も小さい高精度の切口面を能率良く得ること
ができる。しかも、移動刃工具が丸穴刃でなく、逆押え
と半丸穴刃とに分割されているため、オフカットすべき
棒材部分の挿入が容易であり、棒材の径にバラツキがあ
ったり、長手方向の曲りがあっても、何の支障なく挿入
することができるというすぐれた効果が得られる。請求
項2によるときには、擬似丸刃の直径方向の寸法と棒材
直径との隙間寸法調整機構を有するため、一組の半丸穴
刃で圧延棒材の製造上不可避的な直径公差に対応できる
とともに、棒材の径に応じた最適な隙間を設定すること
ができるため、良好な精度のせん断を行えるというすぐ
れた効果が得られる。
According to the first aspect of the present invention described above, the movable blade tool having the semi-round hole blade and the reverse presser which is separate from and opposed to the tool are used together, and the reverse presser and the semi-circular hole are provided only during shearing. A pseudo round blade is formed with the blade, and the diametrical dimension of the pseudo round blade is fixed and sheared so that there is a gap between it and the bar diameter, so the axial direction of the bar part on the off-cut side The movement of the bar is not restricted and only the deformation of the bar in the rotation direction is prevented,
Similar to the circular hole moving blade, the perpendicularity is good, there is no tongue and the like, and it is possible to efficiently obtain a highly accurate cut surface with a small step. Moreover, since the movable blade tool is not a round hole blade, but is divided into a reverse press and a semi-round hole blade, it is easy to insert the bar material that should be off-cut, and the diameter of the bar material may vary. Even if there is a bend in the longitudinal direction, it is possible to obtain an excellent effect that it can be inserted without any trouble. According to claim 2, since there is a gap size adjusting mechanism between the diametrical dimension of the pseudo round blade and the diameter of the bar material, one set of semi-round hole blades can cope with the diameter tolerance inevitable in manufacturing the rolled bar material. At the same time, since the optimum gap can be set according to the diameter of the bar, the excellent effect that shearing can be performed with good accuracy can be obtained.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による棒材のせん断装置の第1実施例を
示す縦断側面図である。
FIG. 1 is a vertical sectional side view showing a first embodiment of a bar shearing device according to the present invention.

【図2】図1の部分的正面図である。FIG. 2 is a partial front view of FIG.

【図3】本発明による棒材のせん断装置の第2実施例を
示す縦断側面図である。
FIG. 3 is a vertical cross-sectional side view showing a second embodiment of the bar shearing device according to the present invention.

【図4】第2実施例の部分切欠正面図である。FIG. 4 is a partially cutaway front view of the second embodiment.

【図5】第2実施例において擬似丸刃を形成した状態を
示す部分的断面図である。
FIG. 5 is a partial cross-sectional view showing a state in which a pseudo round blade is formed in the second embodiment.

【図6】本発明を適用したせん断における擬似丸刃と棒
材直径との隙間と切口面直角度の関係を示すグラフであ
る。
FIG. 6 is a graph showing a relationship between a clearance between a pseudo round blade and a bar diameter and a perpendicularity of a cut surface in shearing to which the present invention is applied.

【図7】本発明を適用したせん断における擬似丸刃と棒
材直径との隙間と切口面のつぶれの関係を示すグラフで
ある。
FIG. 7 is a graph showing the relationship between the clearance between the pseudo round blade and the diameter of the bar and the crushing of the cut surface in shearing to which the present invention is applied.

【図8】本発明を適用したせん断における切口面の状態
を示す説明図である。
FIG. 8 is an explanatory diagram showing a state of a cut surface in shearing to which the present invention is applied.

【図9】本発明を適用したせん断における切口面の状態
を示す説明図である。
FIG. 9 is an explanatory diagram showing a state of a cut surface in shearing to which the present invention is applied.

【図10】従来装置の要部縦断側面図である。FIG. 10 is a vertical sectional side view of a main part of a conventional device.

【図11】従来装置の要部縦断正面図である。FIG. 11 is a vertical sectional front view of a main part of a conventional device.

【符号の説明】[Explanation of symbols]

1 固定刃工具 2 半丸穴刃 3 棒材押え 4 移動刃工具 5 半丸穴刃 6 逆押え 60 半丸穴状受け面 7 加圧手段 W 棒材 w 棒材部分 D0 棒材直径 Tc 半丸穴刃頂部と半丸穴状支え面底部間の寸法 Dc 半丸穴刃頂部と半丸穴状支え面底部間寸法と棒材
直径との隙間
1 Fixed blade tool 2 Half-round hole blade 3 Rod holder 4 Moving blade tool 5 Half-round blade 6 Reverse holder 60 Half-round hole-shaped receiving surface 7 Pressurizing means W Rod material w Rod portion D 0 Rod diameter Tc Half Dimension between the top of the round hole blade and the bottom of the semi-round hole shaped support surface Dc Gap between the dimension between the top of the half round hole blade and the bottom of the semi-round hole shaped support surface and the bar diameter

───────────────────────────────────────────────────── フロントページの続き (72)発明者 古閑 伸裕 埼玉県幸手町香日向2−860−13 (72)発明者 呂 言 埼玉県南埼玉郡宮代町学園台4−1 日本 工業大学工業記念館内 (72)発明者 越智 俊夫 大阪府大阪市北区本庄西3丁目2番25号 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuhiro Koga 2-860-13 Kayuga, Satte-cho, Saitama Prefecture (72) Inventor 4-1 4-1 Gakuendai, Miyashiro-cho, Minami-Saitama-gun, Saitama Japan Institute of Technology Industrial Hall ( 72) Inventor Toshio Ochi 3-2-25 Honjo Nishi, Kita-ku, Osaka City, Osaka Prefecture

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】半丸穴刃を有する固定刃工具と、該固定刃
工具と対向側からリメインダ側の棒材を押える棒押え
と、半丸穴刃を有する移動刃工具と、該移動刃工具に対
向する棒材支え面を有する逆押えを備え、前記逆押え
が、棒材の挿入時には前記移動刃工具の半丸穴刃と離間
し、せん断中は前記移動刃工具の半丸穴刃とで擬似丸刃
を構成し、しかもその擬似丸刃が、オフカット側の棒材
部分の回転方向の変形のみを拘束させるように棒材直径
との間に隙間を有していることを特徴とする棒材のせん
断装置。
1. A fixed blade tool having a semi-round hole blade, a bar retainer for pressing a bar material on the reminder side from a side opposite to the fixed blade tool, a movable blade tool having a semi-round hole blade, and the movable blade tool. A reverse presser having a bar supporting surface facing each other, the reverse press is separated from the semi-round hole blade of the movable blade tool at the time of inserting the bar, and during shearing with the semi-round hole blade of the movable blade tool. The pseudo round blade is characterized by having a gap between the pseudo round blade and the diameter of the bar so as to restrict only the deformation in the direction of rotation of the bar part on the off-cut side. A bar shearing device.
【請求項2】擬似丸刃と棒材直径との隙間寸法調整機構
を備えているものを含む請求項1に記載の棒材のせん断
装置。
2. A shearing device for a bar material according to claim 1, including a device having a clearance size adjusting mechanism between the pseudo round blade and the diameter of the bar material.
JP25185092A 1992-08-28 1992-08-28 Shearing device for bar stock Withdrawn JPH0679519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25185092A JPH0679519A (en) 1992-08-28 1992-08-28 Shearing device for bar stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25185092A JPH0679519A (en) 1992-08-28 1992-08-28 Shearing device for bar stock

Publications (1)

Publication Number Publication Date
JPH0679519A true JPH0679519A (en) 1994-03-22

Family

ID=17228853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25185092A Withdrawn JPH0679519A (en) 1992-08-28 1992-08-28 Shearing device for bar stock

Country Status (1)

Country Link
JP (1) JPH0679519A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100427237C (en) * 2006-08-14 2008-10-22 寇君洲 Rotation overrunning groove-shove chucking metallic rod material sever machine
KR20130004112A (en) * 2011-07-01 2013-01-09 가부시키가이샤 망요 Cutter equipped with a cutting clamp apparatus
JP2018149661A (en) * 2017-03-14 2018-09-27 株式会社万陽 Bar cutting machine comprising constant rate of feeding unit
CN109648136A (en) * 2017-10-12 2019-04-19 株式会社万阳 Disconnecting device
TWI753371B (en) * 2020-02-11 2022-01-21 洪鎭太 Cutting mechanism for forging

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100427237C (en) * 2006-08-14 2008-10-22 寇君洲 Rotation overrunning groove-shove chucking metallic rod material sever machine
KR20130004112A (en) * 2011-07-01 2013-01-09 가부시키가이샤 망요 Cutter equipped with a cutting clamp apparatus
JP2013013949A (en) * 2011-07-01 2013-01-24 Manyo:Kk Cutting machine with cutting clamp device
TWI573680B (en) * 2011-07-01 2017-03-11 Manyo Co Ltd A cutting machine with a cutting device
JP2018149661A (en) * 2017-03-14 2018-09-27 株式会社万陽 Bar cutting machine comprising constant rate of feeding unit
CN109648136A (en) * 2017-10-12 2019-04-19 株式会社万阳 Disconnecting device
KR20190041419A (en) 2017-10-12 2019-04-22 가부시키가이샤 망요 Cutting Apparatus
JP2019072837A (en) * 2017-10-12 2019-05-16 株式会社万陽 Cutting device
TWI753371B (en) * 2020-02-11 2022-01-21 洪鎭太 Cutting mechanism for forging

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Effective date: 19991102