JPH10309652A - Tool detecting device - Google Patents

Tool detecting device

Info

Publication number
JPH10309652A
JPH10309652A JP11679997A JP11679997A JPH10309652A JP H10309652 A JPH10309652 A JP H10309652A JP 11679997 A JP11679997 A JP 11679997A JP 11679997 A JP11679997 A JP 11679997A JP H10309652 A JPH10309652 A JP H10309652A
Authority
JP
Japan
Prior art keywords
turning
sensor
arm
turning arm
main shaft
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
Application number
JP11679997A
Other languages
Japanese (ja)
Other versions
JP3577887B2 (en
Inventor
Akio Nakajima
章雄 中島
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.)
Murata Machinery Ltd
Original Assignee
Murata Machinery 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 Murata Machinery Ltd filed Critical Murata Machinery Ltd
Priority to JP11679997A priority Critical patent/JP3577887B2/en
Publication of JPH10309652A publication Critical patent/JPH10309652A/en
Application granted granted Critical
Publication of JP3577887B2 publication Critical patent/JP3577887B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To achieve improvement of rigidity of a turning arm as well as miniaturization by decreasing the turning radius of the turning arm without making the turning arm interfere with a main shaft. SOLUTION: A turning arm 10 to be normally and reversely turned around the turning center O2 approximately perpendicular to a main shaft 5 and between the falling attitude and the erect attitude positioned ahead of the main shaft 5 is provided. A sensor 11 projecting on the upper surface of the tip in the falling attitude of the turning arm 10 and for detecting the cutting edge of a tool is provided. A sensor attached part 10b on the tip of the turning arm 10 is bent to the sensor 11 side in relation to a turning arm main body 10a. The turning arm 10 is turned to the falling attitude side until the sensor attached part 10b is made approximately horizontal and until a cutting edge detecting part of the sensor has the same height as the axis O1 of the main shaft 5.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、タレット旋盤等
の工作機械において刃物台に装着されたツールの刃先位
置を検出するツール検出装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool detecting device for detecting a position of a cutting edge of a tool mounted on a tool post in a machine tool such as a turret lathe.

【0002】[0002]

【従来の技術】タレット旋盤では、タレットに種々のツ
ールが装着されており、各ツールは刃先位置がそれぞれ
異なっている。すなわち、各ツール毎に、異なるオフセ
ットを有している。そのため、ツールの交換を行った場
合、各ツールの刃先位置を検出し、その検出値に応じて
タレットの送り量を補正することが必要になる。また、
ツールに磨耗が生じた場合、精密加工では、その磨耗量
に応じて送り量の補正を行うことが必要になる。
2. Description of the Related Art In a turret lathe, various tools are mounted on a turret, and each tool has a different edge position. That is, each tool has a different offset. Therefore, when a tool is replaced, it is necessary to detect the position of the cutting edge of each tool and correct the turret feed amount according to the detected value. Also,
When the tool is worn, in precision machining, it is necessary to correct the feed amount according to the wear amount.

【0003】このため、タレット旋盤等では、従来、図
6に側面図で示すように、主軸51の軸心O1に直角な
旋回軸O2回りで、主軸51の前方に倒れる旋回アーム
52と、この旋回アーム52の倒れ姿勢時の先端上面に
突出してタレットのツールの刃先を検出するセンサ53
とを有するツール検出装置54が設けられている。旋回
アーム52は、主軸51の横に設けられたロータリアク
チュエータ55で上下に旋回可能であり、刃先検出を行
うとき以外は直立姿勢となる位置まで旋回して、加工の
邪魔にならないように待機する。旋回アーム52は、側
面形状が直線状とされ、旋回軸O2は主軸51の軸心O
1よりやや低い位置に設定される。これにより、旋回ア
ーム52が水平となる倒れ姿勢で、センサ53の刃先検
出部が主軸51の軸心O1と同一高さとなるように設定
される。また、旋回アーム52は、主軸51の側方に若
干離れた位置で旋回可能に支持されているが、先端のセ
ンサ53が主軸51の前方に来るように、一般に正面形
状(図示せず)は湾曲した形状とされる。センサ53は
タッチスイッチからなり、ツールが接触してオン状態と
なったときのタレットの位置から、刃先位置が検出され
る。
For this reason, in a turret lathe or the like, conventionally, as shown in a side view in FIG. 6, a turning arm 52 that falls forward of the main shaft 51 around a turning axis O2 perpendicular to the axis O1 of the main shaft 51, A sensor 53 for detecting the cutting edge of the tool of the turret, which protrudes from the upper surface of the tip when the revolving arm 52 is in the inclined position;
Is provided. The swivel arm 52 can be swung up and down by a rotary actuator 55 provided beside the main shaft 51, and swivels to a position where it is in an upright posture except when performing blade edge detection, and stands by so as not to hinder processing. . The turning arm 52 has a straight side surface, and the turning axis O2 is the axis O of the main shaft 51.
It is set at a position slightly lower than 1. Accordingly, the blade edge detection unit of the sensor 53 is set to be at the same height as the axis O1 of the main shaft 51 in the inclined posture in which the turning arm 52 is horizontal. The pivot arm 52 is pivotally supported at a position slightly apart from the main shaft 51, but generally has a front shape (not shown) such that the sensor 53 at the tip comes forward of the main shaft 51. It has a curved shape. The sensor 53 includes a touch switch, and detects the position of the cutting edge from the position of the turret when the tool comes into contact and is turned on.

【0004】[0004]

【発明が解決しようとする課題】しかし、上記構成のツ
ール検出装置54では、前記のように旋回アーム52が
水平となる倒れ姿勢で、センサ53の刃先検出部が主軸
51の軸心O1と同一高さとなるように設定されるた
め、センサ53が旋回アーム52の上方に突出する高さ
分だけ、旋回アーム52の旋回中心O2は主軸51の軸
心O1よりも低く設定される。一方、旋回アーム52
は、主軸51に取付けられる種々の形状,大きさの主軸
チャック(図示せず)に干渉しないように旋回させる必
要がある。このように主軸端の主軸チャックに干渉しな
いように旋回アーム52を旋回させるには、旋回アーム
52の旋回中心O2の高さ位置が主軸51の軸心O1か
ら下方に離れていると、それだけ上方に大きな旋回経路
で旋回させることが必要となり、ツール検出装置54の
ために要する設置空間が大きくなって旋盤のコンパクト
化の妨げとなる。また、旋回アーム52が長くなること
から、アームの剛性が弱くなる。この剛性不足を補うた
めには、旋回アーム52を太くすることが必要であり、
これによってもツール検出装置の小型化の妨げとなる。
However, in the tool detecting device 54 having the above-described configuration, the cutting edge detecting portion of the sensor 53 is the same as the axis O1 of the main shaft 51 in the inclined position where the turning arm 52 is horizontal as described above. Since the sensor 53 is set to have a height, the turning center O2 of the turning arm 52 is set lower than the axis O1 of the main shaft 51 by the height of the sensor 53 projecting above the turning arm 52. On the other hand, the swing arm 52
Need to be rotated so as not to interfere with a spindle chuck (not shown) of various shapes and sizes attached to the spindle 51. In order to rotate the turning arm 52 so as not to interfere with the spindle chuck at the end of the spindle, if the height position of the turning center O2 of the turning arm 52 is separated downward from the axis O1 of the main shaft 51, the higher It is necessary to make a turn on a large turning path, and the installation space required for the tool detection device 54 becomes large, which hinders downsizing of the lathe. Further, since the turning arm 52 is long, the rigidity of the arm is weak. In order to compensate for this lack of rigidity, it is necessary to make the turning arm 52 thicker.
This also hinders downsizing of the tool detection device.

【0005】この発明は、このような課題を解消し、旋
回アームを主軸に干渉させることなく、旋回アームの旋
回半径を小さくでき、アームの剛性も向上させることの
できるツール検出装置を提供することを目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a tool detecting device capable of reducing the turning radius of the turning arm and improving the rigidity of the arm without causing the turning arm to interfere with the main shaft. With the goal.

【0006】[0006]

【課題を解決するための手段】この発明の各請求項に記
載のツール検出装置は、主軸に略直角な旋回中心回り
で、主軸の前方に位置する倒れ姿勢と直立姿勢との間を
正逆旋回する旋回アームを設け、この旋回アームの倒れ
姿勢時の先端上面に突出して、ツールの刃先を検出する
センサを設けたものにおいて、次の各工夫を施したもの
である。請求項1記載のツール検出装置は、前記旋回ア
ームの先端のセンサ取付部を、旋回アーム本体に対して
センサ位置側へ屈曲させ、かつ前記旋回アームを、前記
倒れ姿勢側へ、前記センサ取付部が略水平となり前記セ
ンサの刃先検出部が主軸の軸心と同一高さとなるまで旋
回させるようにしたものである。この構成によると、旋
回アームの先端のセンサ取付部が、旋回アーム本体に対
してセンサ側へ屈曲させてあるので、センサが検出位置
となる旋回アームの倒れ姿勢時に、センサの刃先検出部
が主軸の軸心と同一高さとなるようにするにつき、旋回
アームの旋回中心を主軸の軸心の高さに近づけることが
できる。そのため、旋回アームをセンサが待機位置とな
る直立姿勢と検出位置となる倒れ姿勢との間で旋回させ
るときに、旋回アームが主軸端の主軸チャックの上部に
干渉しないように旋回させるにつき、小さい旋回経路で
旋回アームを旋回させれば良く、旋回アームの旋回半径
を小さくできる。これに伴い、旋回アームの長さが短く
なることから、旋回アームの剛性も向上する。したがっ
て、旋回アームを細く形成でき、これによってもツール
検出装置の小型化が図り易くなる。
According to the present invention, there is provided a tool detecting device for reciprocating between a falling posture and an upright posture, which are located in front of a main shaft, around a turning center substantially perpendicular to the main shaft. This device is provided with a sensor for detecting the cutting edge of the tool, provided with a revolving arm that revolves and protruding from the upper surface of the tip when the revolving arm is in the falling posture, and is provided with the following measures. The tool detection device according to claim 1, wherein the sensor mounting portion at the tip of the swivel arm is bent toward the sensor position with respect to the swivel arm main body, and the swivel arm is tilted toward the leaning posture side. Is substantially horizontal, and the blade edge detecting portion of the sensor is turned until it is at the same height as the axis of the main shaft. According to this configuration, the sensor mounting portion at the tip of the swing arm is bent toward the sensor with respect to the swing arm main body. Therefore, when the swing arm is in the falling posture in which the sensor is at the detection position, the blade edge detection portion of the sensor is rotated by the spindle. The center of rotation of the swing arm can be made closer to the height of the axis of the main shaft. Therefore, when the turning arm is turned between the upright posture at which the sensor is at the standby position and the falling posture at which the sensor is at the detecting position, the turning arm is turned so as not to interfere with the upper part of the main spindle chuck at the main spindle end, so that a small turning is required. It is sufficient that the turning arm is turned on the path, and the turning radius of the turning arm can be reduced. Accordingly, since the length of the swing arm is shortened, the rigidity of the swing arm is also improved. Therefore, the swivel arm can be formed thin, which also makes it easier to reduce the size of the tool detection device.

【0007】この発明の請求項2のツール検出装置は、
旋回アームの旋回中心を主軸の軸心と同じ高さとし、前
記旋回アームを、倒れ姿勢で前記センサの刃先検出部が
主軸の軸心と同一高さになる形状としたものである。こ
のように、旋回アームの旋回中心を主軸の軸心と同じ高
さとすると、主軸チャックとの干渉を回避して旋回アー
ムを旋回させるにつき、旋回アームの旋回経路を最小と
できる。したがって、旋回アームの旋回半径が小さくな
り、旋回アームの剛性も向上する。
According to a second aspect of the present invention, there is provided a tool detecting apparatus comprising:
The turning center of the turning arm is set at the same height as the axis of the main shaft, and the turning arm is shaped so that the cutting edge detecting portion of the sensor is at the same height as the axis of the main shaft in the falling posture. As described above, when the center of rotation of the swing arm is set at the same height as the axis of the spindle, the swing path of the swing arm can be minimized when the swing arm is swung while avoiding interference with the spindle chuck. Therefore, the turning radius of the turning arm is reduced, and the rigidity of the turning arm is also improved.

【0008】上記各構成において、前記旋回アームを倒
れ姿勢側へ付勢するばね部材を設けてもよい。この構成
の場合、旋回アームを倒れ姿勢側へ旋回させる途上で、
ギヤ列等の駆動伝達系のバックラッシ等で旋回アームが
直立姿勢側に揺動するのを確実に抑制できるので、倒れ
姿勢となってから直ぐに刃先検出に移っても、精度良く
刃先検出を行うことができる。
In each of the above constructions, a spring member may be provided for biasing the turning arm toward the falling posture. In the case of this configuration, in the course of turning the turning arm to the falling posture side,
Since the swing arm can be reliably prevented from swinging to the upright posture side due to the backlash of the drive transmission system such as a gear train, etc. Can be.

【0009】[0009]

【発明の実施の形態】この発明の一実施形態を図1ない
し図5と共に説明する。図1および図2は、この実施形
態のツール検出装置を備えた工作機械であるタレット式
の旋盤の一部破断平面図および斜視図を示す。このタレ
ット旋盤1は、全体を加工室2と駆動室3とに仕切った
機体カバー4で覆ってあり、加工室2内に主軸5の主軸
チャック5aと刃物台であるタレット6とが突出してい
る。タレット6は、正面形状が多角形のドラム状のもの
であり、各周面部分からなる工具ステーションに、バイ
トや回転工具等の各種のツールTが装着される。また、
タレット6は、駆動室3内で横方向(X軸方向)に進退
するタレットキャリッジ7に前後(Z軸方向)移動自在
に搭載され、かつタレットキャリッジ7に装備された割
出機構(図示せず)により、割出回転が行われる。主軸
5は主軸台8に設置してある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 and FIG. 2 show a partially cutaway plan view and a perspective view of a turret type lathe, which is a machine tool provided with the tool detection device of this embodiment. The turret lathe 1 is entirely covered with a machine body cover 4 which is divided into a processing chamber 2 and a drive chamber 3, and a main spindle chuck 5 a of a main shaft 5 and a turret 6 as a tool post protrude into the processing chamber 2. . The turret 6 is shaped like a drum having a polygonal front surface, and various tools T such as a cutting tool and a rotary tool are mounted on a tool station including each peripheral surface. Also,
The turret 6 is mounted on a turret carriage 7 that advances and retreats in the lateral direction (X-axis direction) in the drive chamber 3 so as to be movable back and forth (Z-axis direction), and an indexing mechanism (not shown) mounted on the turret carriage 7. ), Index rotation is performed. The spindle 5 is installed on a headstock 8.

【0010】加工室2の主軸5に対するタレット6と反
対側位置には、ツールTの刃先位置を検出するツール検
出装置9が設置されている。このツール検出装置9は、
図3(A),(B)に正面図および部分破断側面図で示
すように、主軸5の軸心O1に対して略直角な旋回中心
2 回りで、主軸5の前方に位置する倒れ姿勢と直立姿
勢との間を正逆旋回する旋回アーム10と、この旋回ア
ーム10の倒れ姿勢時の先端上面に突出して、ツールT
の刃先を検出するセンサ11とを有する。旋回アーム1
0の先端の所定長さ部分からなるセンサ取付部10b
は、図3(A)に示すように、旋回アーム本体10aに
対して所定角度θ(ここでは10°)だけセンサ11の
配置側へ屈曲させてある。また、旋回アーム10は、主
軸5の正面側から見て、図3(B)のように、く字状に
湾曲ないし屈曲した形状とされている。
At a position opposite to the turret 6 with respect to the main shaft 5 of the processing chamber 2, a tool detecting device 9 for detecting a cutting edge position of the tool T is installed. This tool detection device 9
As shown in the front view and the partially cutaway side view in FIGS. 3A and 3B, a fall located in front of the main shaft 5 around a turning center O 2 substantially perpendicular to the axis O 1 of the main shaft 5. A swing arm 10 that swings forward and backward between a posture and an upright posture, and a tool T that projects from the top surface of the tip of the swing arm 10 in the fall posture.
And a sensor 11 for detecting the cutting edge. Swivel arm 1
Sensor mounting portion 10b consisting of a predetermined length portion at the tip of zero
As shown in FIG. 3A, the sensor 11 is bent toward the arrangement side of the sensor 11 by a predetermined angle θ (here, 10 °) with respect to the swing arm main body 10a. When viewed from the front side of the main shaft 5, the revolving arm 10 has a curved or bent shape as shown in FIG. 3B.

【0011】旋回アーム10は、その旋回アーム本体1
0aの基端部の旋回軸部26が軸受27を介して旋回駆
動装置12のハウジング16に旋回自在に支持されてお
り、旋回軸部26にベベルギヤ13が設けられている。
旋回駆動装置12には、上記ベベルギヤ13に噛み合う
ベベルギヤ14と、このベベルギヤ14を正逆に回転駆
動する駆動モータ15が設けられており、駆動モータ1
5の回転出力がベベルギヤ14,13を介して旋回アー
ム10に伝達される。旋回アーム10の旋回軸部26の
ベベルギヤ13の先端にはばね装着凹部13aが設けら
れると共に、旋回駆動装置12のハウジング16の上記
ばね装着凹部13aと対向する位置にはばね装着軸17
が設けられており、ばね装着凹部13aからばね装着軸
17にまたがって、旋回アーム10を倒れ姿勢側へ付勢
する捩じりコイルばね18が装着されている。この捩じ
りコイルばね18により、旋回アーム10が倒れ姿勢側
に旋回する途上で、旋回アーム10が直立待機姿勢側へ
揺動するのを確実に規制することができる。
The swing arm 10 has a swing arm body 1.
The turning shaft 26 at the base end of Oa is rotatably supported by the housing 16 of the turning drive device 12 via a bearing 27, and the bevel gear 13 is provided on the turning shaft 26.
The turning drive device 12 is provided with a bevel gear 14 that meshes with the bevel gear 13 and a drive motor 15 that drives the bevel gear 14 to rotate forward and reverse.
5 is transmitted to the revolving arm 10 via the bevel gears 14 and 13. A spring mounting recess 13 a is provided at the tip of the bevel gear 13 of the turning shaft 26 of the turning arm 10, and a spring mounting shaft 17 is provided at a position of the housing 16 of the turning drive device 12 opposite to the spring mounting recess 13 a.
A torsion coil spring 18 that urges the revolving arm 10 toward the falling posture side from the spring mounting recess 13a to the spring mounting shaft 17 is mounted. The torsion coil spring 18 can reliably prevent the swing arm 10 from swinging toward the upright standby posture while the swing arm 10 is turning toward the falling posture.

【0012】図3(B)のIV−IV矢視断面図を示す図4
のように、旋回駆動装置12の旋回アーム支持面部19
には、旋回アーム10の倒れ姿勢を検出する倒れ姿勢検
出センサ20と、旋回アーム10の直立待機姿勢を検出
する待機姿勢検出センサ21とが設けられている。ま
た、旋回アーム支持面部19に対向する旋回アーム10
の基端側の取付面部には、旋回アーム10の直立待機姿
勢時に待機姿勢検出センサ20で検出され、旋回アーム
10の倒れ姿勢時に倒れ姿勢検出センサ21で検出され
るドグ22が設けられている。倒れ姿勢検出センサ20
は旋回中心O2 回りの90°の位置に設けられると共
に、待機姿勢検出センサ21は倒れ姿勢検出センサ20
の位置から旋回中心O2 回りに100°時計方向に回っ
た回動位置に設けられている。これに対して、ドグ22
は、旋回アーム本体10aの直立姿勢時に、上記待機姿
勢検出センサ21と対向する位置に設けられている。こ
れにより、旋回アーム本体10aの直立姿勢時に、待機
姿勢検出センサ21がドグ22を検出し、旋回アーム本
体10aが水平姿勢からさらに10°だけ反時計方向に
回動した倒れ姿勢時に、倒れ姿勢検出センサ20がドグ
22を検出することになる。上述したように、旋回アー
ム10のセンサ取付部10bは、旋回アーム本体10a
に対して10°だけセンサ11側へ屈曲させてあるの
で、上記倒れ姿勢においてセンサ取付部10bは水平姿
勢となる。このセンサ取付部10bの水平姿勢時に、セ
ンサ11の刃先検出部が主軸5の軸心O1 と同一高さと
なるように、センサ11の突出高さが設定されている。
FIG. 4 is a sectional view taken along the line IV-IV in FIG.
As shown in FIG.
Are provided with a falling posture detecting sensor 20 for detecting the falling posture of the turning arm 10 and a standby posture detecting sensor 21 for detecting the standing standby posture of the turning arm 10. In addition, the swing arm 10 facing the swing arm support surface portion 19
A dog 22 which is detected by the standby posture detecting sensor 20 when the turning arm 10 is in the upright standby posture and is detected by the falling posture detecting sensor 21 when the turning arm 10 is in the falling posture is provided on the mounting surface on the base end side of the turning arm 10. . Falling posture detection sensor 20
Is provided at a position of 90 ° around the turning center O 2 , and the standby posture detecting sensor 21 is
It provided from the position in the rotation center O 2 around the rotational position turned to 100 ° clockwise. On the other hand, dog 22
Is provided at a position facing the standby posture detecting sensor 21 when the turning arm body 10a is in the upright posture. Thus, when the turning arm body 10a is in the upright posture, the standby posture detection sensor 21 detects the dog 22, and when the turning arm body 10a is further turned counterclockwise by 10 ° from the horizontal posture, the falling posture detection is performed. The sensor 20 will detect the dog 22. As described above, the sensor mounting portion 10b of the swing arm 10 is connected to the swing arm body 10a.
Is bent toward the sensor 11 side by 10 °, the sensor mounting portion 10b is in the horizontal posture in the above-mentioned falling posture. When the horizontal orientation of the sensor mounting portion 10b, so that the cutting edge detection portion of the sensor 11 is the axis O 1 of the same height of the main shaft 5, the protruding height of the sensor 11 is set.

【0013】さらに、旋回駆動装置12の旋回アーム支
持面部19には、旋回アーム10が直立待機姿勢から所
定角度を越えて時計方向に旋回するのを阻止するストッ
パ23と、旋回アーム10が倒れ姿勢から所定角度を越
えて反時計方向に回動するのを阻止するストッパ24と
が設けられている。
Further, a stopper 23 for preventing the turning arm 10 from turning clockwise beyond a predetermined angle from an upright standby position, and a turning position of the turning arm 10 are provided on the turning arm supporting surface portion 19 of the turning drive device 12. And a stopper 24 for preventing the counterclockwise rotation from exceeding a predetermined angle.

【0014】図5において、25は刃先検出センサ11
を覆うセンサカバーである。このセンサカバー25は、
旋回アーム10の直立待機姿勢時に刃先検出センサ11
を覆うように、機体カバー4の一部に設けられている。
In FIG. 5, reference numeral 25 denotes a cutting edge detection sensor 11.
Is a sensor cover that covers the sensor cover. This sensor cover 25
When the turning arm 10 is in the upright standby posture, the blade edge detection sensor 11
Is provided on a part of the body cover 4 so as to cover

【0015】上記構成の動作を説明する。NC装置から
ツール検出装置9に検出開始指令が与えられると、旋回
駆動装置12の駆動モータ15が正転駆動を開始し、そ
の回転出力がベベルギヤ14,13を介して旋回アーム
10に伝達される。これにより、旋回アーム10は、旋
回アーム本体10aが図3(A),(B)に実線で示す
直立待機姿勢から、倒れ姿勢側に旋回する。旋回駆動装
置12側の倒れ姿勢検出センサ20が旋回アーム10側
のドグ22を検出すると、旋回駆動装置12による旋回
アーム10の旋回が停止され、旋回アーム10は倒れ姿
勢となる。このとき、旋回アーム本体10aは水平姿勢
から反時計方向に10°だけ旋回した姿勢となり、旋回
アーム10のセンサ取付部10bは水平姿勢となるの
で、センサ取付部10bに取り付けられたセンサ11は
その刃先検出部が主軸5の前方でその軸心と同一高さに
位置することになる。
The operation of the above configuration will be described. When a detection start command is given from the NC device to the tool detection device 9, the drive motor 15 of the turning drive device 12 starts forward rotation driving, and the rotation output is transmitted to the turning arm 10 via the bevel gears 14 and 13. . As a result, the swing arm 10 swings from the upright standby posture shown by the solid line in FIGS. 3A and 3B to the fall posture side. When the falling posture detecting sensor 20 on the turning drive device 12 detects the dog 22 on the turning arm 10 side, the turning of the turning arm 10 by the turning drive device 12 is stopped, and the turning arm 10 assumes the falling posture. At this time, the turning arm main body 10a is turned by 10 ° in the counterclockwise direction from the horizontal posture, and the sensor mounting portion 10b of the turning arm 10 is in the horizontal posture, so that the sensor 11 mounted on the sensor mounting portion 10b is The cutting edge detecting section is located in front of the main shaft 5 and at the same height as the axis thereof.

【0016】なお、旋回アーム10が倒れ姿勢側に旋回
する途上で、旋回アーム10は、捩じりコイルばね18
によって倒れ姿勢側に付勢されるので、直立待機姿勢側
に旋回アーム10が揺動するのを確実に規制できる。そ
のため、旋回アーム10が倒れ姿勢に達してから直ちに
刃先検出に移行してもセンサ11が揺動せず、刃先検出
を精度よく行うことができる。
While the turning arm 10 is turning to the falling posture side, the turning arm 10 is rotated by the torsion coil spring 18.
As a result, the swing arm 10 is urged toward the falling posture side, so that the swing arm 10 can be reliably prevented from swinging toward the upright standby posture side. Therefore, even if the process shifts to blade edge detection immediately after the turning arm 10 reaches the falling posture, the sensor 11 does not swing, and the blade edge can be detected with high accuracy.

【0017】旋回アーム10が上記倒れ姿勢に設定され
た状態で、タレット6がツール検出装置9のセンサ11
に向けて、工具Tの刃先をセンサ11が検出する位置ま
でX軸方向に送られる。この検出時のタレット6の位置
が、タレットキャリッジ7を駆動するX軸サーボモータ
の位置検出器から検出され、基準値と比較されて刃先位
置が検出される。検出された刃先位置は、NC装置に送
られ、NC装置によって加工時の刃先位置が自動補正さ
れる。
When the turning arm 10 is set in the above-mentioned inclined posture, the turret 6 is moved to the sensor 11 of the tool detecting device 9.
To the position where the sensor 11 detects the cutting edge of the tool T in the X-axis direction. The position of the turret 6 at the time of this detection is detected by a position detector of the X-axis servo motor that drives the turret carriage 7, and is compared with a reference value to detect the cutting edge position. The detected blade position is sent to the NC device, and the NC device automatically corrects the blade position at the time of machining.

【0018】このようにして、刃先検出が終了すると、
NC装置からツール検出装置9に待機指令が与えられ、
旋回駆動装置12の駆動モータ15が逆転駆動を開始
し、その回転出力がベベルギヤ14,13を介して旋回
アーム10に伝達される。これにより、旋回アーム10
は、図3(A),(B)に鎖線で示す倒れ姿勢から、直
立待機姿勢側に旋回する。旋回駆動装置12側の待機姿
勢検出センサ21が旋回アーム10側のドグ22を検出
すると、旋回駆動装置12による旋回アーム10の旋回
が停止され、旋回アーム10は直立待機姿勢となり、セ
ンサ11はセンサカバー25によって覆われる。
When the detection of the cutting edge is completed in this manner,
A standby command is given to the tool detection device 9 from the NC device,
The drive motor 15 of the swing drive device 12 starts reverse rotation drive, and the rotation output is transmitted to the swing arm 10 via the bevel gears 14 and 13. Thereby, the swing arm 10
Turns from the falling posture indicated by a chain line in FIGS. 3A and 3B to the upright standby posture side. When the standby posture detecting sensor 21 on the side of the turning drive device 12 detects the dog 22 on the side of the turning arm 10, the turning of the turning arm 10 by the turning drive unit 12 is stopped, the turning arm 10 becomes the upright standby posture, and the sensor 11 becomes the sensor. Covered by cover 25.

【0019】上記旋回アーム10の旋回動作において、
旋回アーム10の先端のセンサ取付部10bは、旋回ア
ーム本体10aに対してセンサ11側へ屈曲させてある
ので、旋回アーム10の上方に突出したセンサ11の刃
先検出部を主軸5の軸心O1と同じ高さとなる位置に配
置するのに、旋回アーム10の旋回中心O2 を主軸5の
軸心O1 と同一高さとすることができる。そのため、旋
回アーム10を直立待機姿勢と検出時の倒れ姿勢との間
で旋回させるときに、旋回アーム10が主軸チャック5
aの上部に干渉しないように旋回させるにつき、小さい
旋回経路で旋回アーム10を旋回させれば良く、旋回ア
ーム10の旋回半径を小さくできる。これに伴い、旋回
アーム10の長さが短くなることから、旋回アーム10
の剛性も向上する。したがって、旋回アーム10を細く
形成でき、これによってもツール検出装置9の小型化が
図り易くなる。図3(A),(B)に示した軌跡〜
は、旋回アーム10の各部が旋回に灯って通る軌跡であ
り、同図(B)に示した干渉線′〜′は、前記軌跡
〜と干渉しないように配置できる主軸5,主軸チャ
ック5a,または主軸チャック5aに取付け可能な物の
範囲を示す。
In the turning operation of the turning arm 10,
Since the sensor mounting portion 10b at the tip of the revolving arm 10 is bent toward the sensor 11 with respect to the revolving arm main body 10a, the cutting edge detecting portion of the sensor 11 protruding above the revolving arm 10 is connected to the axis O of the main shaft 5. In order to arrange at the same height as 1 , the turning center O 2 of the turning arm 10 can be at the same height as the axis O 1 of the main shaft 5. Therefore, when the turning arm 10 is turned between the upright standby posture and the falling posture at the time of detection, the turning arm 10 is
For turning so as not to interfere with the upper part of a, the turning arm 10 may be turned on a small turning path, and the turning radius of the turning arm 10 can be reduced. As a result, the length of the swing arm 10 is shortened.
The stiffness is also improved. Therefore, the swivel arm 10 can be formed thin, which also makes it easier to reduce the size of the tool detection device 9. Trajectories shown in FIGS. 3A and 3B
Are the trajectories through which the respective parts of the turning arm 10 are illuminated for turning, and the interference lines ′ to ′ shown in FIG. 6B are the main shaft 5, main shaft chuck 5a, or The range of objects that can be attached to the spindle chuck 5a is shown.

【0020】なお、上記実施形態では、旋回アーム本体
10aに対して、センサ取付部10bをセンサ11側に
若干(10°)屈曲させた場合を示したが、これに限ら
ず、次のように構成してもよい。すなわち、旋回アーム
10の旋回中心O2 は先の実施形態と同様に主軸5の軸
心O1 と同一高さとし、旋回アーム10の形状は、この
旋回アーム10の倒れ姿勢時に、その先端上面に突出さ
せたセンサ11の刃先検出部が主軸5の軸心O1 と同一
高さとなるように形成するものである。この場合も、旋
回アーム10の旋回半径を小さくできるので、それだけ
ツール検出装置9の設置所要空間が小さくなり、タレッ
ト旋盤1をコンパクト化できる。また、旋回アーム10
の長さが短くなることから旋回アーム10の剛性も向上
する。
In the above-described embodiment, the case where the sensor mounting portion 10b is slightly bent (10 °) toward the sensor 11 with respect to the turning arm main body 10a is shown. However, the present invention is not limited to this. You may comprise. That is, the turning center O 2 of the turning arm 10 is the same height as the axis O 1 of the main shaft 5 as in the previous embodiment, and the shape of the turning arm 10 is set at the top surface of the tip when the turning arm 10 is in the falling posture. The protruding blade 11 of the sensor 11 is formed so as to have the same height as the axis O 1 of the main shaft 5. Also in this case, since the turning radius of the turning arm 10 can be reduced, the space required for installing the tool detecting device 9 is correspondingly reduced, and the turret lathe 1 can be made compact. In addition, the swing arm 10
, The rigidity of the swing arm 10 is also improved.

【0021】[0021]

【発明の効果】この発明の請求項1のツール検出装置
は、旋回アームの先端のセンサ取付部を旋回アーム本体
に対してセンサ配置側へ屈曲させ、前記旋回アームは、
前記倒れ姿勢側へ、前記センサ取付部が略水平となり前
記センサの刃先検出部が主軸の軸心と同一高さとなるま
で旋回させるようにしたため、旋回アームを主軸に干渉
させることなく、旋回アームの旋回半径を小さくでき、
また旋回アームの長さが短くなることから旋回アームの
剛性も向上する。また、この発明の請求項2記載のツー
ル検出装置は、旋回アームの旋回中心を主軸の軸心と同
じ高さとし、前記旋回アームを、倒れ姿勢で前記センサ
の刃先検出部が主軸の軸心と同一高さになる形状とした
ため、この場合も、旋回アームを主軸に干渉させること
なく、旋回アームの旋回半径を小さくでき、また旋回ア
ームの長さが短くなることから旋回アームの剛性も向上
する。前記各ツール検出装置において、前記旋回アーム
を倒れ姿勢側へ付勢するばね部材を設けた場合は、旋回
アームを倒れ姿勢側へ旋回させる途上で、旋回アームが
直立姿勢側に揺動するのを抑制できるので、倒れ姿勢と
なってから直ぐに刃先検出に移っても、精度良く刃先検
出を行うことができる。
According to a first aspect of the present invention, there is provided a tool detecting device, wherein a sensor mounting portion at a tip end of a turning arm is bent toward a sensor arrangement side with respect to a turning arm body, and the turning arm includes:
To the falling posture side, the sensor mounting portion is substantially horizontal, and the blade edge detecting portion of the sensor is turned until it is at the same height as the axis of the main shaft, so that the turning arm does not interfere with the main shaft, The turning radius can be reduced,
Further, since the length of the swing arm is shortened, the rigidity of the swing arm is also improved. Further, in the tool detecting device according to claim 2 of the present invention, the turning center of the turning arm is set to the same height as the axis of the main shaft, and the cutting edge detection unit of the sensor is set in the inclined posture with the axis of the main shaft. Since the swivel arm has the same height, the swivel radius of the swivel arm can be reduced without causing the swivel arm to interfere with the main shaft, and the rigidity of the swivel arm is improved because the swivel arm length is reduced. . In each of the tool detection devices, when a spring member for biasing the turning arm toward the falling posture is provided, the turning arm swings toward the upright posture while turning the turning arm toward the falling posture. Since the suppression can be suppressed, the blade edge can be detected with high accuracy even if the process immediately shifts to the blade edge detection after the falling posture.

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

【図1】この発明の一実施形態に係るツール検出装置を
備えたタレット旋盤の部分破断平面図である。
FIG. 1 is a partially broken plan view of a turret lathe provided with a tool detection device according to an embodiment of the present invention.

【図2】同タレット旋盤の斜視図である。FIG. 2 is a perspective view of the turret lathe.

【図3】(A)は前記ツール検出装置の正面図、(B)
は同装置の部分破断側面図である。
FIG. 3A is a front view of the tool detection device, and FIG.
FIG. 2 is a partially broken side view of the device.

【図4】図3(B)のIV−IV矢視断面図である。FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3 (B).

【図5】ツール検出装置における旋回アーム先端部の断
面図である。
FIG. 5 is a cross-sectional view of a tip of a turning arm in the tool detection device.

【図6】従来例の説明図である。FIG. 6 is an explanatory diagram of a conventional example.

【符号の説明】[Explanation of symbols]

5…主軸チャック 10…旋回アーム 10a…旋回アーム本体 10b…センサ取付部 11…センサ 18…捩じりコイルばね(ばね部材) T…ツール O1 …軸心 O2 …旋回中心5 ... spindle chuck 10 ... pivot arm 10a ... pivot arm body 10b ... sensor mounting portion 11 ... sensor 18 ... torsion coil spring (spring member) T ... tools O 1 ... axis O 2 ... pivot

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 主軸に略直角な旋回中心回りで、主軸の
前方に位置する倒れ姿勢と直立姿勢との間を正逆旋回す
る旋回アームを設け、この旋回アームの倒れ姿勢時の先
端上面に突出して、ツールの刃先を検出するセンサを設
け、前記旋回アームの先端のセンサ取付部を旋回アーム
本体に対してセンサ位置側へ屈曲させ、前記旋回アーム
は、前記倒れ姿勢側へ、前記センサ取付部が略水平とな
り前記センサの刃先検出部が主軸の軸心と同一高さとな
るまで旋回させるようにしたツール検出装置。
1. A turning arm for turning forward and backward between a falling posture and an upright posture located in front of the main shaft around a turning center substantially perpendicular to the main shaft, and a top surface of a tip of the turning arm in the falling posture is provided. A sensor for projecting and detecting a cutting edge of the tool is provided, and a sensor mounting portion at a tip of the turning arm is bent toward a sensor position side with respect to the turning arm main body. A tool detection device, wherein the portion is substantially horizontal, and the blade edge detection portion of the sensor is turned until it is at the same height as the axis of the main shaft.
【請求項2】 主軸に略直角な旋回中心回りで、主軸の
前方に位置する倒れ姿勢と直立姿勢との間を正逆旋回す
る旋回アームを設け、この旋回アームの倒れ姿勢時の先
端上面に突出して、ツールの刃先を検出するセンサを設
けたツール検出装置において、旋回アームの旋回中心を
主軸の軸心と同じ高さとし、前記旋回アームを、倒れ姿
勢で前記センサの刃先検出部が主軸の軸心と同一高さに
なる形状としたツール検出装置。
2. A swivel arm that swings forward and backward between a falling posture and an upright posture, which is located in front of the main shaft, around a turning center substantially perpendicular to the main shaft. In a tool detecting device provided with a sensor that detects a cutting edge of a tool, the turning center of the turning arm is set at the same height as the axis of the main shaft, and the turning arm is tilted, and the cutting edge detection unit of the sensor is in a tilted position. Tool detection device with a shape that is the same height as the axis.
【請求項3】 前記旋回アームを倒れ姿勢側へ付勢する
ばね部材を設けた請求項1または請求項2記載のツール
検出装置。
3. The tool detecting device according to claim 1, further comprising a spring member for urging the swivel arm toward the falling posture.
JP11679997A 1997-05-07 1997-05-07 Tool detection device Expired - Fee Related JP3577887B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11679997A JP3577887B2 (en) 1997-05-07 1997-05-07 Tool detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11679997A JP3577887B2 (en) 1997-05-07 1997-05-07 Tool detection device

Publications (2)

Publication Number Publication Date
JPH10309652A true JPH10309652A (en) 1998-11-24
JP3577887B2 JP3577887B2 (en) 2004-10-20

Family

ID=14695961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11679997A Expired - Fee Related JP3577887B2 (en) 1997-05-07 1997-05-07 Tool detection device

Country Status (1)

Country Link
JP (1) JP3577887B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1585618A1 (en) * 2002-11-29 2005-10-19 Marposs Societa' Per Azioni A tool compensating device for the computerized numerically controlled machine tool
JP2008500200A (en) * 2004-05-21 2008-01-10 マーポス、ソチエタ、ペル、アツィオーニ A device for automatically detecting the position of a cutting tool on a computerized numerically controlled lathe.
JP2010253626A (en) * 2009-04-27 2010-11-11 Sekido Kiko Kk Tool presetter
US8069756B2 (en) 2002-11-29 2011-12-06 Marposs Societa' Per Azioni Apparatus for automatically detecting the position of the cutting tool in the computerized numerically controlled lathe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1585618A1 (en) * 2002-11-29 2005-10-19 Marposs Societa' Per Azioni A tool compensating device for the computerized numerically controlled machine tool
EP1585618B1 (en) * 2002-11-29 2009-02-04 Marposs Societa' Per Azioni A tool compensating device for the computerized numerically controlled machine tool
US8065941B2 (en) 2002-11-29 2011-11-29 Marposs Societa' Per Azioni Tool compensating device for the computerized numerically controlled machine tool
US8069756B2 (en) 2002-11-29 2011-12-06 Marposs Societa' Per Azioni Apparatus for automatically detecting the position of the cutting tool in the computerized numerically controlled lathe
JP2008500200A (en) * 2004-05-21 2008-01-10 マーポス、ソチエタ、ペル、アツィオーニ A device for automatically detecting the position of a cutting tool on a computerized numerically controlled lathe.
JP4704430B2 (en) * 2004-05-21 2011-06-15 マーポス、ソチエタ、ペル、アツィオーニ A device for automatically detecting the position of a cutting tool on a computerized numerically controlled lathe.
JP2010253626A (en) * 2009-04-27 2010-11-11 Sekido Kiko Kk Tool presetter

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