JPH03277450A - Tool dimension measuring device - Google Patents
Tool dimension measuring deviceInfo
- Publication number
- JPH03277450A JPH03277450A JP7839090A JP7839090A JPH03277450A JP H03277450 A JPH03277450 A JP H03277450A JP 7839090 A JP7839090 A JP 7839090A JP 7839090 A JP7839090 A JP 7839090A JP H03277450 A JPH03277450 A JP H03277450A
- Authority
- JP
- Japan
- Prior art keywords
- tool
- contact
- probe
- measuring
- measuring device
- 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
- 239000000523 sample Substances 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000013459 approach Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 10
- 238000012937 correction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、工作機械の主軸に工具を装着した状態で、工
具の寸法（工具長、工具径）を測定する工具寸法測定装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tool dimension measuring device that measures the dimensions of a tool (tool length, tool diameter) with the tool mounted on the main shaft of a machine tool.
一般に、例えば、金型の彫刻面を精密切削加工する場合
には、切削加工を行う前に、主軸に装着された工具の寸
法を測定し、この測定値に基ついて補正量を算定して加
ニブログラムを補正し切削加工を行っている。Generally, when performing precision cutting on the engraved surface of a mold, for example, the dimensions of the tool attached to the spindle are measured before cutting, and the amount of correction is calculated based on this measurement value. The nibrogram is corrected and cutting is performed.
ところで、従来、この種の工具の寸法を測定する場合に
は、主軸に工具を装着した状態で、顕微鏡、マイクロメ
ーター１ ダイヤルケー７等を用いて測定し、この測定
値を作業員か手動にて数値制御工作機械（ＮＣ工作機械
）に入力するか、あるいは、主軸から工具を外した状態
で、専用の寸法測定装置に工具を装着して寸法測定を行
い、この測定値を工作機械に手動入力していた。By the way, in the past, when measuring the dimensions of this type of tool, the dimensions of this type of tool were measured using a microscope, micrometer 1, dial key 7, etc. with the tool attached to the spindle, and the measured values were then manually or manually measured by the operator. Alternatively, with the tool removed from the spindle, the tool is attached to a dedicated dimension measuring device to measure dimensions, and the measured values are manually input to the machine tool. I was typing.
このように、上記従来の工具寸法の測定にあっては、そ
の測定値を作業員か手動入力しており、工具数か多（、
測定数か多い場合には、手間かかかり、かつ入力操作ミ
ス等のおそれか否定てきないという問題があった。In this way, in the conventional measurement of tool dimensions, the measured values are input manually by the operator, and the number of tools is large.
When the number of measurements is large, there is a problem that it is time-consuming and the possibility of input operation errors cannot be ruled out.
本発明は、上記事情に鑑みてなされたもので、その目的
とするところは、工具寸法の測定を自動化でき、測定値
を円滑にかつ確実に自動入力することかできて、測定操
作の信頼性の向上及び省力化を図ることができる工作機
械の工具寸法測定装置を提供することにある。The present invention has been made in view of the above circumstances, and its purpose is to automate the measurement of tool dimensions, to automatically input measured values smoothly and reliably, and to improve the reliability of measurement operations. It is an object of the present invention to provide a tool dimension measuring device for a machine tool that can improve performance and save labor.
上記目的を達成するために、本発明は、テーブルに載置
され、かつこのテーブルに対して接近、離間自在に設け
た主軸に装着された工具の寸法を測定する工具寸法測定
装置において、
測定装置本体に、工具の上方及び側方からの接触を検出
する測定子が取付けられ、かつこの測定子の外縁部の断
面形状が側方に向かって突出して形成されたものである
。In order to achieve the above object, the present invention provides a tool dimension measuring device for measuring the dimensions of a tool mounted on a main shaft placed on a table and provided so as to be able to approach and move away from the table.Measuring device A measuring tip for detecting contact from above and sides of the tool is attached to the main body, and the cross-sectional shape of the outer edge of the measuring tip is formed to protrude laterally.
本発明の工具寸法測定装置にあっては、測定子の上方か
ら主軸に装着された工具を接触させることにより、工具
長を算出し、かつ測定子の側方から工具を接触させるこ
とにより、工具径を算出する。In the tool dimension measuring device of the present invention, the tool length is calculated by bringing the tool attached to the spindle into contact with the gauge head from above, and the tool length is calculated by bringing the tool into contact with the gauge head from the side. Calculate the diameter.
〔実施例〕
以下、第１図ないし第８図に基づいて本発明の詳細な説
明する。[Example] Hereinafter, the present invention will be explained in detail based on FIGS. 1 to 8.
第１図ないし第５図は本発明の第１実施例を示すもので
、これらの図において符号１は、水平面内において縦方
向及び横方向に移動自在に設けられたＸＹ子テーブル以
下テーブルと称す）である。1 to 5 show a first embodiment of the present invention, and in these figures, reference numeral 1 denotes an XY child table, hereinafter referred to as a table, which is provided movably in the vertical and horizontal directions in a horizontal plane. ).
そして、このテーブル１の上方には、数値制御工作機械
の主軸ヘッド２が昇降自在に配置されており、この主軸
ヘッド２に回転自在に設けられた主軸３の下端にはエン
ドミル（工具）４か装着されている。A spindle head 2 of a numerically controlled machine tool is arranged above the table 1 so as to be able to move up and down, and an end mill (tool) 4 is attached to the lower end of the spindle 3 rotatably provided on the spindle head 2. It is installed.
また、上記テーブル１上には、加工対象となる加工ワー
ク５が載置されている。さらに、上記テーブル１の加工
範囲外には、工具４の接触を検知する接触検出器６が設
置されている。Further, on the table 1, a workpiece 5 to be processed is placed. Furthermore, a contact detector 6 for detecting contact with the tool 4 is installed outside the processing range of the table 1.
上記接触検出器６の上部には、工具４の上方及び側方か
らの接触を検出するための測定子（３次元プローブ）７
が配置されている。この測定子７は、第２図に示すよう
に平面視正方形の板状でかつ外縁部の断面形状が第１図
および第４図に示すように半円形とされている（例えば
、−辺が１０〜１５■の正方形状てかつ厚さか５ ｒｎ
ｍ、外縁部の断面形状か半径２．５ｚπの半円形とされ
ている）。On the top of the contact detector 6, a measuring element (three-dimensional probe) 7 is provided for detecting contact from above and from the side of the tool 4.
is located. The probe 7 has a square plate shape in plan view as shown in FIG. 2, and the cross-sectional shape of the outer edge is semicircular as shown in FIGS. 1 and 4 (for example, the − side is 10-15cm square shape, thickness 5 rn
m, the cross-sectional shape of the outer edge is semicircular with a radius of 2.5zπ).
そして、上記接触検出器６か、工具４の接触を検出する
と、この検出信号は工作機械に入力されて主軸へノド２
の移動量及びテーブル１の移動量が計測される。When the contact detector 6 or the tool 4 detects contact, this detection signal is input to the machine tool and the nozzle 2 is sent to the main spindle.
The amount of movement of the table 1 and the amount of movement of the table 1 are measured.
次に、上記のように構成された工具寸法測定装置を用い
て工具４の寸法を測定する場合について、第５図に基づ
いて説明すると、まず、ステップＳＰ１に示すように、
測定する工具４の種類か（例エバ、テーバエンド、スト
レートエンド、ボールエンド、逆テーパエンド形状があ
る）、テーバエンド形状であることを工作機械に入力し
、かつステップＳＰ２に示すように、工具４を切削時と
逆に回転させると共に、ステップＳＰ３に示すように、
工具４と測定子７のセンターどうしを合わせる。Next, the case of measuring the dimensions of the tool 4 using the tool dimension measuring device configured as described above will be explained based on FIG. 5. First, as shown in step SP1,
Input into the machine tool the type of tool 4 to be measured (for example, there are Eva, Taper end, straight end, ball end, and reverse tapered end shapes) and the Taper end shape, and then cut the tool 4 as shown in step SP2. While rotating counterclockwise, as shown in step SP3,
Align the centers of tool 4 and probe 7.
すなわち、工具４を下降させた後、テーブル１を移動さ
せることにより、工具４の下端から所定高さの位置を測
定子７の平面視正方形状の四辺にそれぞれ押し当て、そ
の接触を接触検出器６て検出することにより、測定子７
の中心線Ｑを割り出し、この中心線ａ上に工具４の軸線
を一致させる。That is, after lowering the tool 4, by moving the table 1, a position at a predetermined height from the lower end of the tool 4 is pressed against each of the four sides of the square shape in a plan view of the contact stylus 7, and the contact is detected by a contact detector. By detecting the contact point 7
A center line Q is determined, and the axis of the tool 4 is aligned with this center line a.
次いで、ステップＳＰ４に示すように、工具長測定処理
を行う。Next, as shown in step SP4, a tool length measurement process is performed.
すなわち、第１図に示すように、工具４の軸線と接触検
出器６の測定子７の中心線ρとを合致させた状態で、主
軸へノド２を基準位置に移動させる。この基準位置とは
、あらかじめ計測され、かつ工作機械に入力記憶されて
いるテーブル１から主軸ヘット２まての高さａのことを
称している。That is, as shown in FIG. 1, with the axis of the tool 4 and the center line ρ of the probe 7 of the contact detector 6 aligned, the throat 2 is moved to the main shaft to the reference position. This reference position refers to the height a from the table 1 to the spindle head 2, which is measured in advance and input and stored in the machine tool.
次いて、主軸へノド２をテーブル１に接近させて、工具
４の下端を接触検出器６の測定子７の上面に接触させる
。そして、接触検出器６か工具４の接触を検出すると、
その検出信号は工具機械に入力されて、この信号により
工作機械は主軸へノド２の下降を停止すると共に、上記
基準位置からの移動量すを記憶する。そして、この移動
量すと、上記主軸ヘッド２とテーブル１との距離ａ及び
あらかじめ計測記憶されている接触検出器６の高さＣと
によって、工具長ｄは円滑に算出される。Next, the throat 2 of the main shaft is brought close to the table 1, and the lower end of the tool 4 is brought into contact with the upper surface of the probe 7 of the contact detector 6. Then, when the contact detector 6 detects contact with the tool 4,
The detection signal is input to the tool machine, and in response to this signal, the machine tool stops lowering the throat 2 to the main spindle, and also stores the amount of movement from the reference position. Then, based on this amount of movement, the tool length d is smoothly calculated based on the distance a between the spindle head 2 and the table 1 and the height C of the contact detector 6, which has been measured and stored in advance.
続いて、ステップＳＰ５に示すように、工具径を測定す
る。すなわち、テーブル１を移動して工具４をテーブル
１の側方に位置させた後に、主軸ヘッド２を所定量ｇ下
降させた状態で、テーブル１を移動させて接触検出器６
の測定子７の側縁部に工具４を接触させる。そして、接
触検出器６の測定子７が工具４の接触を検出すると、そ
の検出信号が工作機械に入力されて、この信号により工
作機械はテーブル１の移動を停止すると共に、測定子７
の中心線ｇからの移動ｆｉｅを記憶する。次いで、工具
４を所定距離ｆ上昇させて、再びテーブル１を移動させ
て工具４の外周面に接触検出器６の測定子７を接触させ
、この時の測定子７の中心線Ｑからの移動距離ｅ′を記
憶する。さらに、上記移動量ｅ、ｅ’及びあらかじめ計
測記憶された測定子７の中心線ｇから側面までの距離か
ら、各接触点における工具４の半径ｒ、ｒ’が算出され
ると共に、上昇距離ｇ、下降距離ｆ及びあらかじめ計測
記憶された測定子７の厚さの１／２の値（側縁部の半円
形の曲率半径）とに基ついて、工具４のテーパ角及び工
具径りが演算される（ステ。Subsequently, as shown in step SP5, the tool diameter is measured. That is, after moving the table 1 and positioning the tool 4 on the side of the table 1, the spindle head 2 is lowered by a predetermined amount g, and the table 1 is moved to position the contact detector 6.
The tool 4 is brought into contact with the side edge of the measuring element 7. When the probe 7 of the contact detector 6 detects contact with the tool 4, the detection signal is input to the machine tool, and this signal causes the machine tool to stop moving the table 1, and the probe 7
The movement fie from the center line g of is stored. Next, the tool 4 is raised by a predetermined distance f, and the table 1 is moved again to bring the probe 7 of the contact detector 6 into contact with the outer peripheral surface of the tool 4, and the movement of the probe 7 from the center line Q at this time is Store the distance e'. Furthermore, the radii r and r' of the tool 4 at each contact point are calculated from the moving amounts e and e' and the distance from the center line g of the measuring stylus 7 to the side surface measured and stored in advance, and the rising distance g , the taper angle and tool radius of the tool 4 are calculated based on the descending distance f and the value of 1/2 of the thickness of the measuring tip 7 (the radius of curvature of the semicircular side edge) which has been measured and stored in advance. Ru(St.
ブＳＰ６参照）。そして、上記工具長ｄ、工具径り及び
テーパ角を表示装置に表示する一方（ステップＳＰ７参
照）、工作機械は、上記工具長ｄ、工具径りに基づいて
補正量を決定し、加ニブログラムを補正し、ワーク５の
加工を行う。(See SP6). Then, while displaying the tool length d, tool radius, and taper angle on the display device (see step SP7), the machine tool determines a correction amount based on the tool length d, tool radius, and creates a cutting program. The correction is made and the workpiece 5 is processed.
なお、上記実施例において、エンドミルとしてストレー
トエンド形状のものを使用する場合には、第５図のステ
ップＳＰ５は移動距離ｅの計測たけて工具径が演算でき
る。また、第４図に示す第１実施例の測定子７の断面形
状の代わりに、第６図に示すように、外縁部の中央部か
最も尖った形状の測定子７′、あるいは、上面の外縁部
か最も尖った形状の測定子７″、または、下面の外縁部
か最も尖った形状の測定子７′でもよい。In the above embodiment, when a straight end end mill is used, the tool diameter can be calculated in step SP5 of FIG. 5 by measuring the moving distance e. In addition, instead of the cross-sectional shape of the measuring tip 7 of the first embodiment shown in FIG. 4, as shown in FIG. The measuring tip 7'' may have the sharpest outer edge, or the measuring tip 7' may have the sharpest outer edge on the lower surface.
以上説明したように、本発明は、測定装置本体に、工具
の上方及び側方からの接触を検出する測定子が取付けら
れ、かつこの測定子の外縁部の断面形状が側方に向かっ
て突出して形成されたものであるから、測定子の上方か
ら主軸に装着された工具を接触させることにより、工具
長を算出し、かつ測定子の側方から工具を接触させるこ
とにより、工具径を算出することによって、工具寸法の
測定を自動化でき、測定値を円滑にかつ確実に自動入力
することができて、測定操作の信頼性の向上及び省力化
を図ることができる。As explained above, the present invention has a measuring device in which a measuring tip is attached to the main body of the measuring device to detect contact from above and from the side of the tool, and the cross-sectional shape of the outer edge of the measuring tip protrudes laterally. Therefore, the tool length is calculated by contacting the tool attached to the spindle from above the contact point, and the tool diameter is calculated by contacting the tool from the side of the contact point. By doing so, it is possible to automate the measurement of tool dimensions, and it is possible to automatically input measurement values smoothly and reliably, thereby improving the reliability of measurement operations and saving labor.
第１図ないし第５図は本発明の第１実施例を示すもので
、第１図は側面図、第２図は平面図、第３図は工具形状
の一例を示す説明図、第４図は測定子の断面図、第５図
は測定処理を説明する流れ図、第６図は本発明の第２実
施例を示す測定子の断面図、第７図は本発明の第３実施
例を示す測定子の断面図、第８図は本発明の第４実施例
を示す測定子の断面図である。
１・・・ＸＹ子テーブルテーブル）、３・・・主軸、４
・・・エンドミル（工具）、６・・・接触検出器（測定
装置本体）
７′
７″
７＃・・・測定子
（３次元
プローブ）1 to 5 show a first embodiment of the present invention, in which FIG. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is an explanatory diagram showing an example of the shape of the tool, and FIG. is a cross-sectional view of the measuring head, FIG. 5 is a flowchart explaining the measurement process, FIG. 6 is a cross-sectional view of the measuring head showing the second embodiment of the present invention, and FIG. 7 is a cross-sectional view of the measuring head showing the third embodiment of the present invention. FIG. 8 is a sectional view of a measuring head showing a fourth embodiment of the present invention. 1...XY child table), 3...main axis, 4
... End mill (tool), 6... Contact detector (measuring device body) 7'7"7#... Measuring head (three-dimensional probe)
Claims (1)
、離間自在に設けた主軸に装着された工具の寸法を測定
する工具寸法測定装置において、測定装置本体に、工具
の上方及び側方からの接触を検出する測定子が取付けら
れ、かつこの測定子の外縁部の断面形状が側方に向かっ
て突出して形成されたことを特徴とする工具寸法測定装
置。In a tool size measuring device that measures the dimensions of a tool mounted on a spindle that is placed on a table and can move toward and away from the table, the tool is contacted from above and from the sides of the measuring device body. What is claimed is: 1. A tool dimension measuring device, characterized in that a measuring element is attached to detect the measuring element, and the cross-sectional shape of the outer edge of the measuring element is formed to protrude laterally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7839090A JPH03277450A (en) | 1990-03-27 | 1990-03-27 | Tool dimension measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7839090A JPH03277450A (en) | 1990-03-27 | 1990-03-27 | Tool dimension measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03277450A true JPH03277450A (en) | 1991-12-09 |
Family
ID=13660690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7839090A Pending JPH03277450A (en) | 1990-03-27 | 1990-03-27 | Tool dimension measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03277450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130192054A1 (en) * | 2010-09-17 | 2013-08-01 | Yoshikatsu Sato | Machining method |
-
1990
- 1990-03-27 JP JP7839090A patent/JPH03277450A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130192054A1 (en) * | 2010-09-17 | 2013-08-01 | Yoshikatsu Sato | Machining method |
| US9067283B2 (en) * | 2010-09-17 | 2015-06-30 | Mitsubishi Heavy Industries, Ltd. | Machining method |
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