JPS63295151A - Rotary tool cutting device - Google Patents
Rotary tool cutting deviceInfo
- Publication number
- JPS63295151A JPS63295151A JP12586087A JP12586087A JPS63295151A JP S63295151 A JPS63295151 A JP S63295151A JP 12586087 A JP12586087 A JP 12586087A JP 12586087 A JP12586087 A JP 12586087A JP S63295151 A JPS63295151 A JP S63295151A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- workpiece
- cutting
- tool
- rotary tool
- 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
- 238000005520 cutting process Methods 0.000 title claims abstract description 71
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Automatic Control Of Machine Tools (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野コ
この発明は、回転する被削材を回転工具によって切削加
工する切削装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cutting device for cutting a rotating workpiece using a rotating tool.
[従来の技術]
第2図及び第3図は従来の駆動型回転工具による切削ま
たは研削中の状態を示す模式的説明図である0図におい
て、1は回転工具であり、回転工具1は駆動装置2によ
って回転駆動される。3は被削材であり、被削材3も図
示しない駆動装置によって回転駆動される。回転工具1
の回転軸心線と被削材3の回転軸心線は、図示のように
、一般に同一平面上になく、交差せず、また、平行でも
ない。[Prior Art] FIGS. 2 and 3 are schematic explanatory diagrams showing the state during cutting or grinding by a conventional driven rotary tool. In FIG. 0, 1 is a rotary tool; It is rotationally driven by the device 2. 3 is a workpiece, and the workpiece 3 is also rotationally driven by a drive device (not shown). Rotary tool 1
As shown in the figure, the rotational axis of the workpiece 3 and the rotational axis of the workpiece 3 are generally not on the same plane, do not intersect, and are not parallel.
このような回転工具による切削は、回転する被削材3の
表面に回転する回転工具1の切刃を接触させ切り込ませ
て行うのであるが、被削材3の被削部に対する回転工具
1の切刃の進行方向と進行速度は、回転工具1の切刃の
速度すなわち工具周速度4と被削材3の被切削部におけ
る周速度(被削周速度)5とをベクトル合成して得られ
る方向と速度になる。また、切削されて排出される切屑
6は、この合成速度によって定まる切屑排出速度7によ
って排出される。Cutting with such a rotary tool is performed by bringing the cutting blade of the rotating rotary tool 1 into contact with the surface of the rotating workpiece 3 and making a cut. The advancing direction and advancing speed of the cutting edge are obtained by vector synthesis of the cutting edge speed of the rotary tool 1, that is, the tool circumferential speed 4, and the circumferential speed (cutting circumferential speed) 5 of the cut portion of the workpiece 3. direction and speed. Further, the chips 6 that are cut and discharged are discharged at a chip discharge speed 7 determined by this combined speed.
一般に、切削加工においては、切削速度は比較的小さい
ある一定のところで切削するのが、工具の摩耗、加工コ
スト、加工品質等の点で有利であるとされ□ている。特
に、回転工具によって回転する被削材を切削する場合、
工具の摩耗量を少なくするためには、回転工具の回転数
と被削材の回転数を適当に設定して、切屑排出速度7と
工具周速度5との差をできるだけ小さくして切削するの
がよいとされている。Generally, in cutting, it is considered advantageous in terms of tool wear, machining cost, machining quality, etc. to perform cutting at a relatively low cutting speed. Especially when cutting a rotating workpiece with a rotating tool,
In order to reduce the amount of tool wear, the rotational speed of the rotary tool and the rotational speed of the workpiece should be set appropriately, and the difference between the chip evacuation speed 7 and the tool circumferential speed 5 should be made as small as possible during cutting. is said to be good.
[発明が解決しようとする問題点]
従来の回転工具による切削は、以上のように切削速度が
工具の摩耗等の点で有利な一定の値になるように工具の
回転速度と被削材の回転速度とを設定して行っているが
、被削材3が設定された一定の回転数で駆動されている
場合でも、被削周速度5は回転数と被切削部の半径との
積に比例して定まるので、第3図に示すように例えば、
図の上部を切削する場合は半径が小であるので被削周速
度は小さく、図の下部を切削する場合は半径が大である
ので被削周速度は大きい。[Problems to be solved by the invention] As described above, in cutting using a conventional rotary tool, the rotational speed of the tool and the speed of the workpiece are adjusted so that the cutting speed is a constant value that is advantageous in terms of tool wear, etc. Although the rotational speed is set, even if the workpiece 3 is driven at a set constant rotational speed, the cutting peripheral speed 5 is the product of the rotational speed and the radius of the cut part. Since it is determined proportionally, for example, as shown in Figure 3,
When cutting the upper part of the figure, the radius is small, so the circumferential cutting speed is low; when cutting the lower part of the figure, the radius is large, so the circumferential cutting speed is high.
したがって、前記のように切削速度を望ましい一定の速
度にしようとすれば、図の上部を切削する場合は被削材
3の回転数を増加させる必要があり、図の下部を切削す
る場合は回転数を低下させる必要がある。また、被削材
3の回転数を一定の値に保持するとすれば回転工具1の
回転数を変化させる必要がある。しかし、これは大変面
倒であり、特に被削材3の形状が連続的に変化している
場合は、連続的に適当な回転数に変化させることは事実
上不可能であったため、従来、切削速度が不適正となっ
て工具の摩耗が増加し、切削加工の品質も悪くなるとい
う問題があった。Therefore, in order to keep the cutting speed at a desired constant speed as described above, it is necessary to increase the rotation speed of the workpiece 3 when cutting the upper part of the figure, and increase the rotation speed when cutting the lower part of the figure. The number needs to be reduced. Further, if the rotation speed of the workpiece 3 is to be maintained at a constant value, it is necessary to change the rotation speed of the rotary tool 1. However, this is very troublesome, and especially when the shape of the workpiece 3 is changing continuously, it is virtually impossible to continuously change the rotation speed to an appropriate speed. There was a problem in that the speed was inappropriate, increasing tool wear and deteriorating the quality of the cutting process.
この発明は、このような問題点を解消するためになされ
たもので、被削材の形状すなわち半径が変化して被削周
速度が変化しても、これを修正して切削速度が望ましい
一定の値になるようにして切削する手段を得ることを目
的とする。This invention was made to solve these problems, and even if the shape of the workpiece, that is, the radius, changes and the circumferential speed of the workpiece changes, this invention can be corrected to maintain a desirable constant cutting speed. The purpose is to obtain a means for cutting so that the value of .
[問題点を解決するための手段]
この発明に係る回転工具切削装置は、被ttq材の被削
周速度を検出する速度検出器と、該速度検出器が検出し
た前記被削周速度の信号を受信し前記回転工具の工具周
速度と前記被削周速度とから切削速度を算出し該切削速
度が所定速度になるように回転工具または被削材の回転
数を制御する制御装置とを備えたものである。[Means for Solving the Problems] The rotary tool cutting device according to the present invention includes a speed detector that detects the cutting peripheral speed of the ttq material, and a signal of the cutting peripheral speed detected by the speed detector. a control device that receives the information, calculates a cutting speed from the tool circumferential speed of the rotary tool and the workpiece circumferential speed, and controls the rotation speed of the rotary tool or the workpiece so that the cutting speed becomes a predetermined speed. It is something that
[作用]
この発明における回転工具切削装置は、被削材の被切削
部における周速度を検出し、工具周速度と被削周速度と
から切削速度を算出し、該切削速度が所定速度になるよ
うに回転工具または被削材の回転数を制御するものであ
り、これが自動的に行われるので、被削材の形状によっ
て被切削部における周速度が変化しても、回転工具また
は被削材の回転数が変化して何れかの周速度が変化する
ことにより、切削速度が適正になるように自動的に修正
する。これによって、常に望ましい状態で切削を行うこ
とができる。[Operation] The rotary tool cutting device of the present invention detects the circumferential speed of the cut portion of the work material, calculates the cutting speed from the tool circumferential speed and the workpiece circumferential speed, and makes the cutting speed a predetermined speed. This is to control the rotational speed of the rotating tool or the workpiece, and this is done automatically, so even if the circumferential speed at the part to be cut changes depending on the shape of the workpiece, the rotation speed of the rotating tool or the workpiece can be controlled. The cutting speed is automatically corrected so as to be appropriate as the rotational speed changes and any of the circumferential speeds changes. This allows cutting to be performed in a desired state at all times.
[実施例]
以下、この発明の一実施例を図について説明する。第1
図はこの発明の一実施例による回転工具切削装置の説明
図である。図において、1は回転工具であり、回転工具
1は駆動装置2によって回転駆動される。3は被削材で
あり、被削材3は図示しない駆動装置によって回転駆動
される。この回転工具1の外周の切刃を被削材3の被切
削部位に接触させ切り込ませて切削するのであるが、被
削材3も回転しており被削材3は旋削される。そのとき
、回転工具1の切刃が被削材3の被切削部を切削する方
向と切削速度は、回転工具1の切刃の速度(工具周速度
)4と被削材3の被切削部位の周速度(被削周速度)5
とをベクトル合成したものになる。この切削によって切
屑6が切り離されこの切削速度によって定まる切屑排出
速度7で排出される。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is an explanatory diagram of a rotary tool cutting device according to an embodiment of the present invention. In the figure, 1 is a rotary tool, and the rotary tool 1 is rotationally driven by a drive device 2. 3 is a workpiece, and the workpiece 3 is rotationally driven by a drive device (not shown). The cutting edge on the outer periphery of the rotary tool 1 is brought into contact with the cut portion of the workpiece 3 to cut it, and the workpiece 3 is also rotating and the workpiece 3 is turned. At that time, the direction and cutting speed in which the cutting blade of the rotary tool 1 cuts the cut part of the workpiece 3 are determined by the speed of the cutting blade of the rotary tool 1 (tool circumferential speed) 4 and the cut part of the workpiece 3 Peripheral speed (cutting peripheral speed) 5
It is a vector composition of The chips 6 are separated by this cutting and are discharged at a chip discharge speed 7 determined by this cutting speed.
8は速度検出器であり、被削材3の被切削部位における
外周速度(被削周速度)5を検出するものである。速度
検出器8はローラ等を接触させて速庫を検出する接触式
でもよく、電気、磁気、光線等を利用して速度を検出す
る非接触式のものでもよい。9は制御装置であり、制御
装置9は速度検出器8から被削周速度の信号を取り込み
、別に回転工具1の工具周速度4の信号も取り込み、被
削周速度5と工具周速度4とをベクトル合成する演算を
行って切削速度を算出し、この切削速度が所定速度にな
るように回転工具lの駆動装置2を制御し、回転工具1
の回転数を制御するものである。この所定速度は工具の
摩耗等を考慮して定められたものである。特に工具の摩
耗、例えば、工具すくい面摩耗が問題になる場合は、前
記所定速度は工具周速度4と前記切削速度から算出され
る切屑排出速度7とが同じになるようににする。Reference numeral 8 denotes a speed detector, which detects the outer circumferential speed (cut circumferential speed) 5 at the cut portion of the workpiece 3. The speed detector 8 may be a contact type that detects the speed by bringing a roller or the like into contact, or may be a non-contact type that detects the speed using electricity, magnetism, light, or the like. Reference numeral 9 denotes a control device, and the control device 9 takes in a signal of the peripheral speed of the cutting work from the speed detector 8, and also takes in a signal of the peripheral speed of the tool 4 of the rotary tool 1, and controls the peripheral speed of the workpiece 5 and the tool peripheral speed 4. The cutting speed is calculated by performing vector synthesis of
This is to control the rotation speed of the motor. This predetermined speed is determined in consideration of tool wear and the like. Particularly when tool wear, for example tool rake face wear, is a problem, the predetermined speed is set so that the tool circumferential speed 4 and the chip evacuation speed 7 calculated from the cutting speed are the same.
−mに、切削加工においては、切削速度が大きすぎると
工具の摩耗が著しく大きくなり、切削速度が小さすぎる
とコストが高くなる。その中間に工具の摩耗も少なく、
コストも低く、加工品質も良好なものが得られる切削速
度がある。特に、回転工具によって回転する被削材を切
削する場合、工具の窄耗量を少なくするためには、回転
工具の回転数と被削材の回転数を適当に設定して、切屑
排出速度7と工具周速度5との差をできるだけ小さくし
て切削するのが良いとされている。-m, in cutting, if the cutting speed is too high, the wear of the tool will increase significantly, and if the cutting speed is too low, the cost will increase. In between, there is less tool wear,
There is a cutting speed that allows for low cost and good machining quality. In particular, when cutting a rotating workpiece with a rotary tool, in order to reduce the amount of wear on the tool, the rotational speed of the rotary tool and the rotational speed of the workpiece should be appropriately set, and the chip ejection speed should be set to 7. It is said that it is best to perform cutting by minimizing the difference between the tool circumferential speed 5 and the tool circumferential speed 5.
そこで、制御装置9は前述のように、被削周速度5と工
具周速度4とから相対速度(切削速度)を#出し、これ
が前記の望ましい値になるように駆動装置2の回転数を
制御し、望ましい切削速度で加工を行うものである。こ
れによって、工具の摩耗の減少1品質の向上、コストの
低減等の効果を得ることができる。Therefore, as described above, the control device 9 outputs the relative speed (cutting speed) # from the cutting peripheral speed 5 and the tool peripheral speed 4, and controls the rotation speed of the drive device 2 so that this becomes the desired value. and performs machining at a desired cutting speed. As a result, effects such as reduction in tool wear, improvement in quality, and cost reduction can be obtained.
第1図に示す実施例では、制御装置9は回転工具1の駆
動装置2を制御して回転工具1の回転数を変化させる構
成としたが、図示しない被削材の駆動装置を制御して被
削材3の回転数を変化させる構成とすれば常に一定の被
削周速度かえられて更によく、同様の作用効果が得られ
る。In the embodiment shown in FIG. 1, the control device 9 is configured to control the drive device 2 of the rotary tool 1 to change the rotation speed of the rotary tool 1, but it also controls the drive device for the workpiece (not shown). If the rotational speed of the workpiece 3 is changed, the circumferential speed of the workpiece can always be kept constant, which is even better, and similar effects can be obtained.
なお−速度検出器8は被切削部の半径を検出するもので
もよい。Note that the speed detector 8 may be one that detects the radius of the part to be cut.
また、以上はこの発明を旋削に適用した実施例について
説明したが、フライス削り、形削り等においても、被切
削部の速度が変化するような場合には、この発明を適用
して望ましい切削速度にて加工を行い、摩耗の減少9品
質の向上、コストの低下等の効果を得ることができる。In addition, although the embodiments in which the present invention is applied to turning have been described above, when the speed of the cut part changes in milling, shaping, etc., the present invention can be applied to change the desired cutting speed. It is possible to obtain effects such as reduced wear, improved quality, and reduced costs.
[発明の効果]
以上のように、この発明によれば、被削部の速度が変化
しても、これを検出して被削材または工具の回転数を制
御し、常に適正な状態で切削することができるので、工
具の摩耗減少等有利な効果を得ることができる。[Effects of the Invention] As described above, according to the present invention, even if the speed of the workpiece changes, this is detected and the rotational speed of the workpiece or tool is controlled, and cutting is always performed in an appropriate state. Therefore, advantageous effects such as reduced tool wear can be obtained.
第1図はこの発明の一実施例による回転工具切削装置の
説明図、第2図、第3図は回転工具による切削の説明図
である。
図において、■は回転工具、2は駆動装置、3は被削材
、6は切屑、8は速度検出器、9は制御装置である。FIG. 1 is an explanatory diagram of a rotary tool cutting device according to an embodiment of the present invention, and FIGS. 2 and 3 are explanatory diagrams of cutting by a rotary tool. In the figure, ■ is a rotary tool, 2 is a drive device, 3 is a workpiece, 6 is a chip, 8 is a speed detector, and 9 is a control device.
Claims (2)
装置において、前記被削材の被切削部における被削周速
度を検出する速度検出器と、該速度検出器が検出した前
記被削周速度の信号を受信し前記回転工具の工具周速度
と前記被削周速度とから切削速度を算出し該切削速度が
所定速度になるように回転工具または被削材の回転数を
制御する制御装置とを備えたことを特徴とする回転工具
切削装置。(1) A cutting device that cuts a rotating workpiece using a rotating tool, including a speed detector that detects a circumferential speed of the workpiece at a cut portion of the workpiece, and a speed detector that detects the circumferential speed of the workpiece at a cut portion of the workpiece; A control device that receives a speed signal, calculates a cutting speed from the tool peripheral speed of the rotary tool and the workpiece peripheral speed, and controls the rotation speed of the rotary tool or the workpiece so that the cutting speed becomes a predetermined speed. A rotary tool cutting device characterized by comprising:
とから算出される切屑排出速度が前記工具周速度と同一
となる速度である特許請求の範囲第1項記載の回転工具
切削装置。(2) The rotary tool cutting device according to claim 1, wherein the predetermined speed is a speed at which a chip discharge speed calculated from the tool circumferential speed and the workpiece circumferential speed is the same as the tool circumferential speed. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12586087A JPS63295151A (en) | 1987-05-25 | 1987-05-25 | Rotary tool cutting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12586087A JPS63295151A (en) | 1987-05-25 | 1987-05-25 | Rotary tool cutting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63295151A true JPS63295151A (en) | 1988-12-01 |
Family
ID=14920733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12586087A Pending JPS63295151A (en) | 1987-05-25 | 1987-05-25 | Rotary tool cutting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63295151A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8573901B2 (en) | 2003-09-02 | 2013-11-05 | Kennametal Inc. | Assembly for rotating a cutting insert during a turning operation and inserts used therein |
-
1987
- 1987-05-25 JP JP12586087A patent/JPS63295151A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8573901B2 (en) | 2003-09-02 | 2013-11-05 | Kennametal Inc. | Assembly for rotating a cutting insert during a turning operation and inserts used therein |
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