JPH06277901A - Control method for cutting tool and its device - Google Patents

Control method for cutting tool and its device

Info

Publication number
JPH06277901A
JPH06277901A JP7217493A JP7217493A JPH06277901A JP H06277901 A JPH06277901 A JP H06277901A JP 7217493 A JP7217493 A JP 7217493A JP 7217493 A JP7217493 A JP 7217493A JP H06277901 A JPH06277901 A JP H06277901A
Authority
JP
Japan
Prior art keywords
tool
cutting
cutting tool
cutting edge
angle
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Withdrawn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
JP7217493A
Other languages
Japanese (ja)
Inventor
Tomoyoshi Ekusa
友良 江草
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.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing 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 NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP7217493A priority Critical patent/JPH06277901A/en
Publication of JPH06277901A publication Critical patent/JPH06277901A/en
Withdrawn legal-status Critical Current

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Abstract

PURPOSE:To provide a control method for a cutting tool and its device by which the life of the tool can be lengthened, and the saving of resources, the reduction of machining cost and the improvement of machining efficiency are facilitated. CONSTITUTION:Machining work is executed as a contact related angle between a cutting tool 1 and a workpiece 5 is continuously or intermittently varied within the range of the effective angle of a cutting edge. In addition, a cutting tool control device is furnished with a tool post 4 to which the cutting tool 1 is firmly fixed, a tool post swivelling mechanism 6 which continuously or intermittently swivels the tool post 4 within the range of the effective angle of the cutting edge of the cutting tool 1 to vary the contact related angle between the cutting tool 1 and the work piece 5, and a cutting edge position compensating circuit 7 for automatically compensating the variation of the cutting edge position of the cutting tool 1 in relation to the swiveling caused by the tool post swivelling mechanism 6 of the tool post 4.

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、NC旋盤等における切
削刃具の制御方法及び装置に関するもので、特に、スロ
ーアウェイチップに適用して好適なものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for controlling a cutting tool in an NC lathe or the like, and is particularly suitable for application to a throw-away tip.

【0002】[0002]

【従来の技術】NC旋盤等に使用される切削刃具は、超
硬合金のチップ(以下、刃具と称す。)を炭素工具鋼の
シャンクの先端にロー付けで固着したもの(ロー付けバ
イト)と、交換可能に取り付けたもの(スローアウェイ
バイト)が多い。
2. Description of the Related Art Cutting tools used in NC lathes and the like are those in which a cemented carbide tip (hereinafter referred to as a cutting tool) is fixed by brazing to the tip of a carbon tool steel shank (brazing bite). , Most of them are replaceable (throw away bite).

【0003】例えば、スローアウェイバイトの場合、図
4に示すように、刃具(1)を取り付け具(2)を介し
てシャンク(3)の先端部に取り付けており、この刃具
(1)は、両端に刃部を持つタイプで取り付け直しによ
り2回使用することができるものを例示している。
For example, in the case of a throw-away bite, as shown in FIG. 4, a cutting tool (1) is attached to the tip of a shank (3) via a mounting tool (2). A type having blade portions at both ends that can be used twice by reattaching is illustrated.

【0004】[0004]

【発明が解決しようとする課題】従来、上記シャンク
(3)を刃物台(4)に、刃具(1)の姿勢を一定に固
定して取り付けていたため、ノーズ半径Rの一部しか磨
耗しない。上記刃具(1)の先端のノーズ半径Rは、例
えば、0.2〜5mmであり、刃先の有効角度範囲は、
ノーズ半径Rの曲率中心角で表せば、最大120°の切
削有効刃面を有しているが、実際には、上記切削有効刃
面のごく一部、例えば、30°〜90°程度しか使用し
ていない。ロー付けバイトの場合も同様であった。
Conventionally, since the shank (3) is attached to the tool rest (4) while the attitude of the cutting tool (1) is fixed and fixed, only a part of the nose radius R is worn. The nose radius R of the tip of the cutting tool (1) is, for example, 0.2 to 5 mm, and the effective angle range of the cutting edge is
In terms of the curvature center angle of the nose radius R, the cutting effective blade surface has a maximum of 120 °, but in reality, only a small portion of the cutting effective blade surface, for example, about 30 ° to 90 ° is used. I haven't. The same was true for brazed bytes.

【0005】本発明は、上記刃具(1)の寿命延長を図
ることにより、省資源化、切削加工コストの低減、切削
加工能率の向上等を可能とする切削刃具の制御方法及び
装置を提供することを目的としている。
The present invention provides a method and apparatus for controlling a cutting blade, which can save resources, reduce the cutting cost, and improve the cutting efficiency by extending the life of the cutting tool (1). Is intended.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
本発明の方法は、刃先の有効角度範囲内で刃具とワーク
との接触関係角度を連続的又は間欠的に変化させて切削
加工を行なうようにしたものである。
In order to achieve the above object, the method of the present invention performs cutting by continuously or intermittently changing the contact relation angle between the cutting tool and the work within the effective angle range of the cutting edge. It was done like this.

【0007】また、本発明の装置は、刃具を固着した刃
物台と、該刃物台を前記刃具の刃先の有効角度範囲内で
連続的又は間欠的に旋回させて刃具とワークとの接触関
係角度を変化させる刃物台旋回機構と、該刃物台旋回機
構による刃物台の旋回に関連して刃具の刃先位置の変位
を自動的に補正する刃先位置補正回路とを具備させたも
のである。
Further, the apparatus of the present invention comprises a tool rest to which a tool is fixed, and a tool-work contact angle between the tool and the work by rotating the tool rest continuously or intermittently within the effective angle range of the cutting edge of the tool. And a blade tip position correction circuit for automatically correcting the displacement of the blade tip position of the cutting tool in association with the turning of the tool rest by the tool rest turning mechanism.

【0008】[0008]

【作用】本発明の方法のように、刃具とワークとの接触
関係角度を刃先の有効角度範囲内で変化させると、当該
刃具が具備している有効刃面全域を使用して切削加工を
行なわせることができ、寿命延長が図れる。上記変化を
連続的に行なわせると、当該刃具が具備している有効刃
面全域を均等に使用することとなり、磨耗も均等化で
き、刃先温度の上昇も分散させることができる。
When the contact relationship angle between the cutting tool and the work is changed within the effective angle range of the cutting edge as in the method of the present invention, the cutting is performed using the entire effective cutting surface of the cutting tool. It is possible to extend the life. If the above change is continuously performed, the entire effective blade surface of the cutting tool is used evenly, wear can be made uniform, and the rise in the cutting edge temperature can be dispersed.

【0009】本発明の装置によれば、刃物台旋回機構に
よる刃先位置の変位を刃先位置補正回路によって自動的
に補正させることができ、切削加工を円滑に行なわせる
ことができる。
According to the apparatus of the present invention, the displacement of the cutting edge position by the tool post turning mechanism can be automatically corrected by the cutting edge position correction circuit, and the cutting process can be smoothly performed.

【0010】[0010]

【実施例】図1は本発明方法の実施に直接使用する装置
の概略構成を示す平面図であって、(1)は刃具、
(2)は取り付け具、(3)はシャンク、(4)は刃物
台、(5)はワーク、(6)は刃物台旋回機構、(7)
は刃先位置補正回路を示している。
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing the schematic construction of an apparatus used directly for carrying out the method of the present invention, in which (1) is a cutting tool,
(2) is a mounting tool, (3) is a shank, (4) is a tool rest, (5) is a workpiece, (6) is a tool rest swivel mechanism, (7)
Indicates a blade position correction circuit.

【0011】刃具(1)は、両端に対称形状の刃先を形
成した超硬合金製のスローアウェイチップで、取り付け
具(2)によりシャンク(3)の先端部に交換及び取り
付け直し可能に固着されている。
The cutting tool (1) is a throw-away tip made of cemented carbide with symmetrical cutting edges formed on both ends, and is fixed to the tip of the shank (3) by the mounting tool (2) so as to be replaceable and remountable. ing.

【0012】取り付け具(2)は、ねじ構造からなり、
刃具(1)の中央部の取り付け穴に挿通され、シャンク
(3)の先端部に形成されたねじ穴に螺合される。
The fitting (2) is of screw construction,
The cutting tool (1) is inserted through a central mounting hole and screwed into a screw hole formed at the tip of the shank (3).

【0013】シャンク(3)は、炭素工具鋼で構成さ
れ、先端部に刃具(1)の取付部及びねじ穴が形成さ
れ、全体が角棒状とされている。
The shank (3) is made of carbon tool steel, has a mounting portion for the cutting tool (1) and a screw hole formed at the tip, and has a square bar shape as a whole.

【0014】刃物台(4)は、刃具(1)を先端部に取
り付けたシャンク(3)を取り付けねじ等によって固着
するもので、この刃物台(4)は、図2の(a)に示す
ように、旋盤のベッド(8)上にZ方向(送り方向)の
サーボモータ(9)と送りねじ(10)とによってZ方
向に移動する第1移動台(11)と、この第1移動台
(11)上にX方向(切り込み方向)のサーボモータ
(12)と送りねじ(13)とによってX方向に移動す
る第2移動台(14)とからなる複式移動台上、即ち、
この第2移動台(14)の上面中央で、図2の(b)に
示すように、Z−X平面に直交して設置された旋回軸
(15)に旋回可能に取り付けられている。
The tool rest (4) is one in which the shank (3) having the tip (1) attached to the tip is fixed by a mounting screw or the like, and this tool rest (4) is shown in FIG. 2 (a). As described above, the first moving table (11) is moved on the bed (8) of the lathe in the Z direction by the servo motor (9) in the Z direction (feeding direction) and the feed screw (10), and the first moving table. (11) on a double-moving base consisting of a second moving base (14) moving in the X direction by a servomotor (12) in the X direction (cutting direction) and a feed screw (13), that is,
At the center of the upper surface of the second moving table (14), as shown in FIG. 2 (b), it is rotatably attached to a swivel shaft (15) installed orthogonal to the Z-X plane.

【0015】ワーク(5)は、旋盤の主軸ヘッドのチャ
ックとテールストックのセンターとの間に旋回駆動可能
に支持されており、ワーク(5)の軸線は、Z方向と平
行とされている。
The work (5) is rotatably supported between the chuck of the spindle head of the lathe and the center of the tail stock, and the axis of the work (5) is parallel to the Z direction.

【0016】刃物台旋回機構(6)は、図2の(b)に
示すように、刃物台(4)と第2移動台(14)との間
に設置され、例えば、ウオーム(6a)とウオームホイ
ール(6b)とからなり、旋盤のNC制御部からの指令
等でサーボモータ(6c)によりウオーム(6a)とウ
オームホイール(6b)とを介して刃物台(4)を、旋
回軸(15)を中心として刃具(1)の刃先の有効角度
範囲内で連続的又は間欠的に旋回動作させるものであ
る。
As shown in FIG. 2B, the tool post turning mechanism (6) is installed between the tool post (4) and the second moving table (14), for example, a worm (6a). The worm wheel (6b) is used, and the tool rest (4) is rotated through the worm (6a) and the worm wheel (6b) by the servomotor (6c) in response to a command from the NC control unit of the lathe. ) As the center, the swivel motion is performed continuously or intermittently within the effective angle range of the cutting edge of the cutting tool (1).

【0017】刃先位置補正回路(7)は、刃物台旋回機
構(6)によって刃物台(4)と一体的に旋回せしめら
れた刃具(1)の刃先位置の変位に関連して、刃物台
(4)の旋回中心(0)の位置を、旋盤のNC制御部を
通じて自動的に補正させるためのものである。例えば、
図1において、(0)点中心で刃物台(4)を△θだけ
旋回させると、切削点(P)は(Q)へ移動するが、
(0)点を−△x,+△zだけX軸方向及びZ軸方向へ
補正移動させれば、刃先位置の変位は補正される。上記
変位の補正は、
The cutting edge position correction circuit (7) relates to the displacement of the cutting edge position of the cutting tool (1) which is integrally rotated with the tool rest (4) by the tool rest turning mechanism (6), in relation to the tool rest ( This is for automatically correcting the position of the turning center (0) of 4) through the NC control unit of the lathe. For example,
In FIG. 1, when the tool rest (4) is rotated by Δθ about the point (0), the cutting point (P) moves to (Q),
If the point (0) is corrected and moved by -Δx and + Δz in the X-axis direction and the Z-axis direction, the displacement of the cutting edge position is corrected. Correction of the above displacement is

【0018】θ:旋回中心(0)上でのZ軸に対する切
削点(P)の初期角度 r:旋回中心(0)から切削点(P)までの旋回半径 とすると、 △x=r△θcosθ △z=r△θsinθ で演算され、これを刃先位置補正回路(7)で演算させ
て、刃物台(4)の旋回中心(0)の位置を、旋盤のN
C制御部を通じて自動的に補正させるように構成され
る。
Θ: initial angle of cutting point (P) with respect to Z-axis on turning center (0) r: turning radius from turning center (0) to cutting point (P), Δx = rΔθcos θ Δz = rΔθ sin θ is calculated, and this is calculated by the blade tip position correction circuit (7) to determine the position of the turning center (0) of the tool rest (4) as N of the lathe.
The C control unit is configured to automatically correct.

【0019】本発明の実施例は、以上の構成からなり、
次に、その動作を説明する。図3は説明の便宜上、刃具
(1)の刃先の有効角度範囲を3分割して部分使用する
ようにした場合を例示しているもので、(a)は左側1
/3の範囲の使用例、(b)は中央1/3の範囲の使用
例、(c)は右側1/3の範囲の使用例をワーク(5)
との関係で示している。このような使用角度範囲の設定
変更は、図1に示した刃物台(4)を刃物台旋回機構
(6)により所定角度づつ旋回させることによって行な
うことができる。そして使用角度範囲を設定変更する
と、これに関連して刃先位置補正回路(7)により、刃
物台(4)の旋回中心(0)の位置を、旋盤のNC制御
部を通じて自動的に補正させる。上記使用角度範囲の設
定変更は、切削加工中、連続的又は間欠的に行なわせる
ことができる。また、旋回角度も図3のような範囲に制
限されることなく自由に設定することができる。なお、
連続的とは、1切削加工サイクルにおいて、刃先の有効
角度範囲の一端から他端までアナログ的に1回だけ移動
させる場合や、1回乃至複数回往復移動させる場合を云
う。また、間欠的とは、1切削加工サイクルにおいて、
刃先の有効角度範囲の一端から他端までデジタル的に行
なわせる場合を云う。
An embodiment of the present invention has the above-mentioned structure,
Next, the operation will be described. FIG. 3 illustrates a case where the effective angle range of the cutting edge of the cutting tool (1) is divided into three parts for partial use for convenience of description.
Work example in the range of / 3, (b) is the use example of the center 1/3 range, (c) is the use example of the right 1/3 range Work (5)
It is shown in the relationship with. Such setting change of the use angle range can be performed by turning the tool rest (4) shown in FIG. 1 by a predetermined angle by the tool rest turning mechanism (6). Then, when the setting of the use angle range is changed, the position of the turning center (0) of the tool rest (4) is automatically corrected by the blade position correction circuit (7) through the NC control unit of the lathe. The setting change of the use angle range can be performed continuously or intermittently during cutting. Further, the turning angle can be freely set without being limited to the range shown in FIG. In addition,
The term “continuously” refers to a case where the cutting edge is moved analogically from one end to the other end of the effective angle range once in one cutting cycle, or is reciprocated once or a plurality of times. In addition, intermittent means that in one cutting cycle,
It refers to a case where digital processing is performed from one end to the other end of the effective angle range of the cutting edge.

【0020】上記実施例は、刃具(1)とワーク(5)
との接触関係角度の変更を刃物台旋回機構(6)によっ
て自動的に行なわせた場合を例示しているが、本発明の
方法の実施は、刃物台(4)に対するシャンク(3)の
取り付け角度を変更させ、又は、シャンク(3)に対す
る刃具(1)の取り付け角度を変更するようにしてもよ
く、或いは、刃物台(4)を手動ハンドル等によって旋
回軸(15)の回りで旋回させてもよい。さらに、本発
明は、スローアウェイバイトだけでなく、ロー付けバイ
トにも適用できる。また、シャンクの先端に直接刃先を
形成した完成バイトに適用しても寿命延長が図れる。
In the above embodiment, the cutting tool (1) and the work (5) are used.
The case of automatically changing the contact relationship angle with the tool post turning mechanism (6) is illustrated, but the method of the present invention is performed by mounting the shank (3) on the tool post (4). The angle may be changed, or the mounting angle of the cutting tool (1) with respect to the shank (3) may be changed, or the tool rest (4) may be swung around the swivel axis (15) by a manual handle or the like. May be. Further, the present invention can be applied not only to throw-away bytes but also to brazed bytes. Also, the life can be extended by applying it to a completed cutting tool in which the cutting edge is directly formed on the tip of the shank.

【0021】[0021]

【発明の効果】本発明の方法によれば、切削刃具の刃先
の有効角度範囲全域を使用することができ、刃具の寿命
を従来の少なくとも2倍以上に延長することができ、省
資源化、切削加工コストの低減、切削加工能率の向上等
が図れる。また、刃先温度の低下によるチップ刃先強度
の向上、磨耗の減少が期待でき、使用刃先長が拡大され
るための切削有効距離の延長、切屑と刃先位置が連続的
に変化することによる刃先への潤滑剤供給が容易となる
等の効果が得られる。
According to the method of the present invention, the entire effective angle range of the cutting edge of the cutting tool can be used, the life of the cutting tool can be extended at least twice as long as the conventional one, and resource saving can be achieved. The cutting cost can be reduced and the cutting efficiency can be improved. In addition, the chip edge strength can be improved by decreasing the blade temperature, wear can be expected to decrease, the effective cutting distance can be extended to increase the length of the cutting edge, and the cutting edge and the cutting edge position can be changed continuously to improve the cutting edge. Effects such as easy supply of lubricant can be obtained.

【0022】そして、本発明の装置によれば、切削刃具
の刃先位置の変化に関連して、自動的に切削点の位置補
正を行なわせることができ、NC旋盤等に適用して優れ
た効果を奏するものである。
According to the apparatus of the present invention, the position of the cutting point can be automatically corrected in association with the change in the position of the cutting edge of the cutting tool, which is excellent when applied to an NC lathe or the like. Is played.

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

【図1】本発明方法の実施に直接使用する装置の概略構
成を示す平面図。
FIG. 1 is a plan view showing a schematic configuration of an apparatus used directly for carrying out the method of the present invention.

【図2】(a)は本発明における刃物台の取り付けベー
スとなる複式移動台の概略平面図、(b)は刃物台旋回
機構の概略平面図。
FIG. 2 (a) is a schematic plan view of a compound moving base that serves as a mounting base for a tool post in the present invention, and FIG. 2 (b) is a schematic plan view of a tool post turning mechanism.

【図3】(a)(b)(c)は本発明による刃具の刃先
使用角度範囲の変更例図。
3 (a), (b) and (c) are diagrams showing examples of changing the working angle range of the cutting edge of the cutting tool according to the present invention.

【図4】従来の切削刃具の代表的使用例の説明用平面
図。
FIG. 4 is a plan view for explaining a typical usage example of a conventional cutting blade.

【符号の説明】[Explanation of symbols]

1 刃具 2 取り付け具 3 シャンク 4 刃物台 5 ワーク 6 刃物台旋回機構 7 刃先位置補正回路 1 Cutting Tool 2 Mounting Tool 3 Shank 4 Turret 5 Work 6 Turret Rotating Mechanism 7 Blade Position Correction Circuit

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 刃先の有効角度範囲内で刃具とワークと
の接触関係角度を連続的又は間欠的に変化させて切削加
工を行なうことを特徴とする切削刃具の制御方法。
1. A method of controlling a cutting blade, wherein the cutting is performed by continuously or intermittently changing the contact relationship angle between the blade and the workpiece within the effective angle range of the blade edge.
【請求項2】 刃具を固着した刃物台と、該刃物台を前
記刃具の刃先の有効角度範囲内で連続的又は間欠的に旋
回させて刃具とワークとの接触関係角度を変化させる刃
物台旋回機構と、該刃物台旋回機構による刃物台の旋回
に関連して刃具の刃先位置の変位を自動的に補正する刃
先位置補正回路とを具備させたことを特徴とする切削刃
具の制御装置。
2. A tool rest to which a tool is fixed, and a tool rest swivel for continuously or intermittently turning the tool rest within an effective angle range of the cutting edge of the tool to change a contact relation angle between the tool and a work. A cutting tool control device comprising: a mechanism; and a cutting edge position correction circuit that automatically corrects the displacement of the cutting edge position of the cutting tool in association with the turning of the cutting tool by the cutting tool turning mechanism.
JP7217493A 1993-03-30 1993-03-30 Control method for cutting tool and its device Withdrawn JPH06277901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7217493A JPH06277901A (en) 1993-03-30 1993-03-30 Control method for cutting tool and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7217493A JPH06277901A (en) 1993-03-30 1993-03-30 Control method for cutting tool and its device

Publications (1)

Publication Number Publication Date
JPH06277901A true JPH06277901A (en) 1994-10-04

Family

ID=13481604

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Application Number Title Priority Date Filing Date
JP7217493A Withdrawn JPH06277901A (en) 1993-03-30 1993-03-30 Control method for cutting tool and its device

Country Status (1)

Country Link
JP (1) JPH06277901A (en)

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JP2000135604A (en) * 1998-10-29 2000-05-16 Mori Seiki Co Ltd Machining method using tool holder
CN103737030A (en) * 2013-12-20 2014-04-23 广西南宁百兰斯科技开发有限公司 High-precision lathe carriage
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JP2000135604A (en) * 1998-10-29 2000-05-16 Mori Seiki Co Ltd Machining method using tool holder
CN103737030A (en) * 2013-12-20 2014-04-23 广西南宁百兰斯科技开发有限公司 High-precision lathe carriage
CN103962592A (en) * 2014-05-26 2014-08-06 江苏万达特种轴承有限公司 Tool and method for machining numerical control turning circular arc slope chamfer
CN105234428A (en) * 2014-07-10 2016-01-13 上海国上机电科技有限公司 Numerical-control machining technique for aluminum part shell
JP2017019071A (en) * 2015-07-14 2017-01-26 株式会社ジェイテクト Grinder and grinding method
JP2017056533A (en) * 2015-09-18 2017-03-23 シチズン時計株式会社 Cutting device and control method thereof
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US9737935B2 (en) 2015-10-09 2017-08-22 Sandvik Intellectual Property Ab Turning insert
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JP2018530445A (en) * 2015-10-09 2018-10-18 サンドビック インテレクチュアル プロパティー アクティエボラーグ How to machine a metal workpiece by turning
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JP2021516167A (en) * 2018-03-08 2021-07-01 アクチボラグ サンドビック コロマント Computerized Numerical Control (COMPUTERIZED NUMERICAL CONTROL or CNC) Turning Methods for Lathes and Turning Tools
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JP2019166635A (en) * 2019-05-31 2019-10-03 株式会社ジェイテクト Cutting device and cutting method

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