JPH0550361A - Tool center height measuring device - Google Patents
Tool center height measuring deviceInfo
- Publication number
- JPH0550361A JPH0550361A JP23737391A JP23737391A JPH0550361A JP H0550361 A JPH0550361 A JP H0550361A JP 23737391 A JP23737391 A JP 23737391A JP 23737391 A JP23737391 A JP 23737391A JP H0550361 A JPH0550361 A JP H0550361A
- Authority
- JP
- Japan
- Prior art keywords
- center
- center height
- axis
- core height
- 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.)
- Granted
Links
Landscapes
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、NC旋盤において刃物
台に取付けられたバイトの芯高を測定する装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for measuring the core height of a cutting tool attached to a tool rest in an NC lathe.
【0002】[0002]
【従来の技術】旋削加工において、バイトの芯高が正確
に合っていないと図7に示すような段付加工又は図8に
示すような球面加工の際に、寸法誤差や形状誤差となっ
て表れるため、バイトの芯高管理は大切な要素の一つと
されている。従来、このバイトの芯高調整方法は、バイ
ト取付時に簡単なゲージ等によりラフセットを行ったの
ち、図9に示すように工作物101の端面切削を行っ
て、削り残し量102がなくなるまで敷板の厚さを加減
して芯高調整を行っていた。2. Description of the Related Art In turning processing, if the core height of the cutting tool is not accurately matched, a dimensional error or a shape error will occur during step processing as shown in FIG. 7 or spherical surface processing as shown in FIG. Since it appears, it is considered that the core height management of the bite is one of the important factors. Conventionally, the core height adjustment method of this cutting tool is such that rough setting is performed by a simple gauge or the like when mounting the cutting tool, and then the end surface of the workpiece 101 is cut as shown in FIG. 9 until the uncut amount 102 is exhausted. The core height was adjusted by adjusting the thickness of the.
【0003】[0003]
【発明が解決しようとする課題】従来の技術で述べたバ
イトの芯高調整方法は、工作物の端面切削を行って敷板
の厚さ調整を行うための労力と時間が必要で、そのうえ
工作物によっては端面の試し切削ができないものもある
という問題点を有している。本発明は従来の技術の有す
るこのような問題点に鑑みなされたものであり、その目
的とするところは、NC旋盤のタレットにセットされた
バイトの芯高をデジタルに測定できる装置を提供しよう
とするものである。The method for adjusting the core height of the cutting tool described in the prior art requires labor and time for adjusting the thickness of the floor plate by cutting the end face of the work, and moreover, the work. There is a problem that some end surfaces cannot be trial-cut. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an apparatus capable of digitally measuring the core height of a cutting tool set on a turret of an NC lathe. To do.
【0004】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明におけるバイトの芯高測定装置は、主軸先端に
所定直径の円弧に形成された計測面を有するタッチセン
サを、前記円弧中心が前記主軸中心に対しX軸と直角の
方向に所定の偏心量を有しかつセンサ軸心がX軸方向を
向くように設け、該タッチセンサに前記バイトの刃先が
当接して信号が出力されたときの前記刃先のX軸現在値
から前記所定直径及び前記偏心量を基に芯高誤差を算出
する手段を設けてなるものである。In order to achieve the above-mentioned object, a core height measuring device of a bite according to the present invention is a touch sensor having a measuring surface formed in an arc of a predetermined diameter at the tip of a main shaft, wherein the center of the arc is A predetermined eccentric amount is provided in the direction perpendicular to the X-axis with respect to the center of the main axis, and the sensor axis is provided so as to face the X-axis direction, and the cutting edge of the cutting tool comes into contact with the touch sensor to output a signal. A means is provided for calculating a core height error based on the predetermined diameter and the amount of eccentricity from the current X-axis value of the cutting edge at that time.
【0005】[0005]
【作用】主軸中心に対してX軸と直角の方向にLだけ偏
心する直径Dの円弧面に形成されX軸方向を向くセンサ
に刃物台のX軸移動でバイトの刃先が当接したときの刃
先のX位置を読み取り、演算により読み取ったXとDの
数値から円弧中心までのバイトの芯高を求め、求めた数
値からLを減じて芯高誤差を算出しCRTに表示する。
そしてこの表示された芯高誤差分だけ敷板の厚さを変え
てバイトの芯高を調整する。When the tool tip is brought into contact with the sensor formed on an arc surface of diameter D eccentric to the center of the spindle in the direction perpendicular to the X axis by a diameter D and oriented in the X axis direction, the tool rest moves along the X axis. The X position of the cutting edge is read, the core height of the cutting tool to the center of the circular arc is calculated from the numerical values of X and D read by calculation, L is subtracted from the calculated value to calculate the core height error, and this is displayed on the CRT.
Then, the core height of the cutting tool is adjusted by changing the thickness of the floor plate by the displayed core height error.
【0006】[0006]
【実施例】実施例について図1〜図5を参照して説明す
る。公知のNC旋盤の主軸先端に嵌着されるチャック1
の把持爪1aに、センサ取付台2が同心に把持されてお
り、取付台2の先端にタッチセンサ3が固着されてい
る。取付台2は中央部の鍔部にX軸方向の二方取り平面
2aが削設されており、タッチセンサ3の計測面3a,
3bはこの二方取り平面2aと平行かつ主軸中心に対し
てX軸と直角の方向に所定量Lだけ偏心した位置を中心
とする所定直径Dの円弧面に形成されている。そしてこ
のようにセンサの軸心線a−aを正確にX軸方向に向く
ようにセットするには、二方取り平面2aを基準に主軸
の回転角を調整するようになっている。タッチセンサ3
は例えばメトロール製ツールセンサ等計測面にバイトの
刃先が当接したときタッチ信号を出力する市販のものを
使用することができ、計測面3a,3bの円弧は正確に
所定直径Dに形成されている。EXAMPLES Examples will be described with reference to FIGS. A chuck 1 fitted to the tip of the main shaft of a known NC lathe.
The sensor mounting base 2 is concentrically gripped by the grip claw 1a of the above, and the touch sensor 3 is fixed to the tip of the mounting base 2. The mounting base 2 has a two-way chamfering plane 2a in the X-axis direction cut on the central collar portion, and the measurement surface 3a of the touch sensor 3 is
3b is formed in an arc surface having a predetermined diameter D centered on a position parallel to the two-way flat surface 2a and eccentric by a predetermined amount L in the direction perpendicular to the X-axis with respect to the center of the main axis. In order to set the axis aa of the sensor accurately in the X-axis direction, the rotation angle of the main shaft is adjusted with the two-way flat surface 2a as a reference. Touch sensor 3
For example, a commercially available tool such as a tool sensor manufactured by Metrol that outputs a touch signal when the cutting edge of the cutting tool comes into contact with the measuring surface can be used, and the arcs of the measuring surfaces 3a and 3b are accurately formed to have a predetermined diameter D. There is.
【0007】一方Z軸方向移動可能な往復台上のX軸方
向の案内に沿って移動可能に設けられた刃物台4に、Z
軸垂直平面内において旋回割出可能にタレット5が設け
られており、タレット5の外周に設けられた複数の工具
取付ステーションにバイトTが着脱可能に取付けられて
いる。そして刃物台4はサーボモータ6によりボールね
じ7を介して移動位置決めされ、サーボモータ6に位置
検出器8が同心に組込まれている。On the other hand, in the tool rest 4 movably provided along the guide in the X-axis direction on the carriage which is movable in the Z-axis direction,
A turret 5 is provided so as to be turnable and indexable in a plane perpendicular to the axis, and a bite T is detachably attached to a plurality of tool attachment stations provided on the outer periphery of the turret 5. The tool rest 4 is moved and positioned by a servo motor 6 via a ball screw 7, and a position detector 8 is concentrically incorporated in the servo motor 6.
【0008】図5のブロック線図部分は、NC内の本発
明に係わる回路の抜粋であり、演算指令入力部11は、
押釦又はマニアルデータインプット機能により演算指令
を出力する部分、円弧直径記憶部12はタッチセンサ3
計測面3a,3bの円弧直径Dを記憶しておく部分、偏
心量記憶部13は主軸中心に対するタッチセンサ3の偏
心量Lを記憶しておく部分である。芯高演算部14は、
演算指令入力部11からの演算指令で、円弧直径Dと偏
心量L及び位置検出器8のタッチ時のX軸検出位置Xを
読み込んで、図3に示す直角三角形の各辺の長さ関係を
表す次式L2 =(D/2)2 −(X/2)2 より、例え
ば図4に示すように芯高が違う場合のX軸検出位置をX
1とすれば、このときの円弧中心に対する芯高L1を求
め、更に所定偏心量Lとの差を求めて芯高誤差L2を算
出する部分である。芯高表示部15は芯高演算部14の
出力信号を受けてCRT16の画面上に芯高誤差をデジ
タル表示する部分で、タッチ信号表示部17はタッチセ
ンサ3からのタッチ信号を受けてCRT16画面上又は
ブザー等により刃先がセンサにタッチしたことを表示す
る部分である。The block diagram portion of FIG. 5 is an excerpt of the circuit according to the present invention in the NC, and the operation command input unit 11 is
A portion for outputting a calculation command by the push button or the manual data input function, the arc diameter storage unit 12 is the touch sensor 3
The arc diameter D of the measurement surfaces 3a and 3b is stored, and the eccentricity storage 13 stores the eccentricity L of the touch sensor 3 with respect to the center of the spindle. The core height calculation unit 14
By the calculation command from the calculation command input unit 11, the arc diameter D, the eccentricity L, and the X-axis detection position X when the position detector 8 is touched are read and the length relationship of each side of the right triangle shown in FIG. From the following expression L 2 = (D / 2) 2 − (X / 2) 2 , which represents the X-axis detection position when the core height is different as shown in FIG.
If the value is 1, the core height L1 with respect to the center of the arc at this time is calculated, and the difference between the core height L1 and the predetermined eccentricity L is calculated to calculate the core height error L2. The core height display unit 15 is a portion that receives the output signal of the core height calculation unit 14 and digitally displays the core height error on the screen of the CRT 16. The touch signal display unit 17 receives the touch signal from the touch sensor 3 and displays the CRT 16 screen. This is a portion that displays that the blade edge has touched the sensor by the top or the buzzer.
【0009】続いて本実施例の作用を図6のフローチャ
ートに従って説明する。ステップS1において、タッチ
センサ3を有する取付台2を主軸チャック1の把持爪1
aにて把持して振れの有無を確認したあと、二方取り平
面を基準にセンサ軸心線a−aが正確にX軸方向を向く
よう主軸の回転角を合わせる。ステップS2において、
NC操作パネル上のパルスハンドル等のマニアル操作で
バイトT先端のZ軸方向位置がセンサ軸心線a−aの延
長線上にほぼくるようにZ軸位置決めして、刃物台4の
X軸移動でバイトTをタッチセンサ側に移動する。ステ
ップS3においてこのX軸移動中にタッチ信号が出ない
かをCRT16の画面上又はブザー音により確認し、ノ
ーの場合はステップS2に戻り、イエスの場合は、ステ
ップS4において、その場でX軸送りを停止する。The operation of this embodiment will be described below with reference to the flow chart of FIG. In step S1, the mounting base 2 having the touch sensor 3 is attached to the grip claw 1 of the spindle chuck 1.
After confirming the presence or absence of shake by gripping at a, the rotation angle of the main shaft is adjusted so that the sensor axis center line aa accurately faces the X-axis direction with reference to the two-way plane. In step S2,
By manual operation of the pulse handle etc. on the NC operation panel, the Z-axis is positioned so that the Z-axis position of the tip of the bite T is almost on the extension line of the sensor axis center line aa, and the tool rest 4 is moved by the X-axis. The bite T is moved to the touch sensor side. In step S3, whether or not a touch signal is output during the movement of the X-axis is confirmed on the screen of the CRT 16 or by a buzzer sound. If NO, the process returns to step S2, and if YES, the X-axis is performed on the spot in step S4. Stop feeding.
【0010】次いでステップS5において、演算指令入
力部11より演算指令が出て、ステップS6において、
芯高演算部14に円弧直径記憶部12より直径Dが、偏
心量記憶部13より偏心量Lが読み込まれ、ステップS
7において位置検出器8よりタッチ時の検出位置Xが芯
高演算部14に読み込まれる。次いでステップS8にお
いて、芯高演算部14において読み込んだD,L,Xの
値から演算により芯高誤差L2を求め、ステップS9に
おいて芯高誤差L2の値をCRT16にデジタル表示す
る。尚タッチセンサ3の計測面3aは正バイト用、計測
面3bは逆バイト用である。また刃先のX軸位置は正確
に主軸中心でゼロになるように工具補正されたものとす
る。Next, in step S5, a calculation command is issued from the calculation command input unit 11, and in step S6,
The core height calculation unit 14 reads the diameter D from the arc diameter storage unit 12 and the eccentricity amount L from the eccentricity amount storage unit 13, and the step S
In 7, the position detector 8 reads the detected position X at the time of touch into the core height calculation unit 14. Next, in step S8, the core height error L2 is obtained by calculation from the values of D, L, and X read by the core height calculator 14, and in step S9, the value of the core height error L2 is digitally displayed on the CRT 16. The measuring surface 3a of the touch sensor 3 is for a normal cutting tool, and the measuring surface 3b is for a reverse cutting tool. Further, it is assumed that the X-axis position of the cutting edge is tool-corrected so as to be exactly zero at the center of the spindle.
【0011】[0011]
【発明の効果】本発明は、上述のとおり構成されている
ので、次に記載する効果を奏する。主軸に所定直径の円
弧面を有するタッチセンサを、主軸中心に対して円弧中
心がX軸と直角の方向に所定量偏心し、センサ軸心がX
軸方向を向くように取付け、刃物台にセットされたバイ
トのX軸移動で刃先がタッチセンサに当接したときの信
号でX軸移動を停止し、このときの刃先のX軸位置と所
定直径及び所定偏心量より演算により芯高誤差を求め
て、CRT画面上にデジタルに表示するようにしたの
で、芯高の測定が簡単かつ短時間にできるようになり球
面加工時の形状精度が向上し、段付加工時の径寸法管理
が容易となる。Since the present invention is configured as described above, it has the following effects. A touch sensor having an arc surface with a predetermined diameter on the main shaft is eccentric to the center of the main shaft in a direction perpendicular to the X axis by a predetermined amount, and the sensor axis is X.
The tool is mounted so that it is oriented in the axial direction, and the X-axis movement of the cutting tool set on the tool post is stopped by the signal when the cutting edge comes into contact with the touch sensor. Also, since the core height error is calculated from the predetermined eccentricity amount and displayed digitally on the CRT screen, the core height can be measured easily and in a short time, and the shape accuracy during spherical surface machining is improved. , It becomes easy to control the diameter dimension during step processing.
【図1】本実施例のバイトの芯高測定装置のタッチセン
サ部分の側面図である。FIG. 1 is a side view of a touch sensor portion of a cutting tool core height measuring apparatus according to an embodiment of the present invention.
【図2】図1の上視図である。FIG. 2 is a top view of FIG.
【図3】バイトの芯高が正確に主軸中心に合っている状
態を示すタッチセンサの正面図である。FIG. 3 is a front view of the touch sensor showing a state in which the center height of the cutting tool is accurately aligned with the center of the spindle.
【図4】バイトの芯高が低い場合を表す芯高誤差を求め
る算式の説明図である。FIG. 4 is an explanatory diagram of an equation for obtaining a core height error that represents a case where the core height of the cutting tool is low.
【図5】本実施例の一部タッチセンサ,刃物台の図を含
むバイトの芯高誤差算出回路のブロック線図である。FIG. 5 is a block diagram of a core height error calculation circuit of a cutting tool including diagrams of a partial touch sensor and a tool rest of the present embodiment.
【図6】本実施例の作用のフローチャート図である。FIG. 6 is a flow chart of the operation of this embodiment.
【図7】従来の技術に引用した段付切削を示す図であ
る。FIG. 7 is a diagram showing stepped cutting cited in the related art.
【図8】従来の技術に引用した球面切削を示す図であ
る。FIG. 8 is a diagram showing spherical surface cutting cited in the related art.
【図9】従来の技術の端面切削によるバイトの芯高誤差
を求める方法の説明図である。FIG. 9 is an explanatory diagram of a conventional method for obtaining a core height error of a cutting tool by end face cutting.
2 取付台 3 タッチセンサ 3a,3b 計測面 4 刃物台 5 タレット 14 芯高演算部 T バイト D 計測面の円弧
直径 L 偏心量 L2 芯高誤差2 Mounting base 3 Touch sensors 3a, 3b Measuring surface 4 Turret 5 Turret 14 Core height calculation unit T bit D Arc diameter of measuring surface L Eccentricity amount L2 Core height error
Claims (1)
バイトの芯高を測定する装置であって、主軸先端に所定
直径の円弧に形成された計測面を有するタッチセンサを
前記円弧中心が前記主軸中心に対しX軸と直角の方向に
所定の偏心量を有しかつセンサ軸心がX軸方向を向くよ
うに設け、該タッチセンサに前記バイトの刃先が当接し
て信号が出力されたときの前記刃先のX軸現在値から前
記所定直径及び前記偏心量を基に芯高誤差を算出する手
段を設けてなることを特徴とするバイトの芯高測定装
置。1. A device for measuring the core height of a cutting tool attached to a tool rest in an NC lathe, comprising a touch sensor having a measuring surface formed in an arc of a predetermined diameter at the tip of the spindle, wherein the arc center is the spindle. When a signal is output when the cutting edge of the cutting tool comes into contact with the touch sensor and has a predetermined eccentricity in the direction perpendicular to the center and the sensor axis is oriented in the X-axis direction. A core height measuring device for a bite, comprising means for calculating a core height error based on the predetermined diameter and the amount of eccentricity from the X-axis current value of the cutting edge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3237373A JP3071890B2 (en) | 1991-08-23 | 1991-08-23 | Tool height measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3237373A JP3071890B2 (en) | 1991-08-23 | 1991-08-23 | Tool height measuring device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0550361A true JPH0550361A (en) | 1993-03-02 |
JP3071890B2 JP3071890B2 (en) | 2000-07-31 |
Family
ID=17014427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3237373A Expired - Lifetime JP3071890B2 (en) | 1991-08-23 | 1991-08-23 | Tool height measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3071890B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008044366A1 (en) * | 2006-10-06 | 2008-04-17 | Tsugami Corporation | Lathe, computer program for controlling lathe, and machining method in lathe |
JP2009045675A (en) * | 2007-08-14 | 2009-03-05 | Alps Tool Co Ltd | Device for measuring center height of cutter |
JP2009050980A (en) * | 2007-08-28 | 2009-03-12 | Alps Tool Co Ltd | Center height measuring device of cutting tool |
JP2021084145A (en) * | 2019-11-26 | 2021-06-03 | 株式会社ツガミ | Tool position detection device and machine tool |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102456616B1 (en) | 2021-12-03 | 2022-10-19 | 이정근 | Measuring instrument and method of adjusting the jaw position of chuck using the same |
-
1991
- 1991-08-23 JP JP3237373A patent/JP3071890B2/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008044366A1 (en) * | 2006-10-06 | 2008-04-17 | Tsugami Corporation | Lathe, computer program for controlling lathe, and machining method in lathe |
JP2008093741A (en) * | 2006-10-06 | 2008-04-24 | Tsugami Corp | Lathe, computer program for controlling lathe and machining method in lathe |
KR101009708B1 (en) * | 2006-10-06 | 2011-01-19 | 가부시기가이샤 츠가미 | Lathe, computer program for lathe control, and machining method by lathe |
US8051754B2 (en) | 2006-10-06 | 2011-11-08 | Tsugami Corporation | Lathe, computer program for lathe control, and machining method by lathe |
JP2009045675A (en) * | 2007-08-14 | 2009-03-05 | Alps Tool Co Ltd | Device for measuring center height of cutter |
JP2009050980A (en) * | 2007-08-28 | 2009-03-12 | Alps Tool Co Ltd | Center height measuring device of cutting tool |
JP2021084145A (en) * | 2019-11-26 | 2021-06-03 | 株式会社ツガミ | Tool position detection device and machine tool |
Also Published As
Publication number | Publication date |
---|---|
JP3071890B2 (en) | 2000-07-31 |
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