JPH10113848A - Rotational position determining device - Google Patents

Rotational position determining device

Info

Publication number
JPH10113848A
JPH10113848A JP28938896A JP28938896A JPH10113848A JP H10113848 A JPH10113848 A JP H10113848A JP 28938896 A JP28938896 A JP 28938896A JP 28938896 A JP28938896 A JP 28938896A JP H10113848 A JPH10113848 A JP H10113848A
Authority
JP
Japan
Prior art keywords
meshing
pinion
meshing member
members
rack
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
Application number
JP28938896A
Other languages
Japanese (ja)
Inventor
Kensaku Kato
健作 加藤
Hiroshi Ito
伊藤  博
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.)
Denso Corp
Original Assignee
Denso Corp
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 Denso Corp filed Critical Denso Corp
Priority to JP28938896A priority Critical patent/JPH10113848A/en
Publication of JPH10113848A publication Critical patent/JPH10113848A/en
Pending legal-status Critical Current

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  • Automatic Control Of Machine Tools (AREA)
  • Machine Tool Positioning Apparatuses (AREA)
  • Machine Tool Units (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an accurate and simple table rotational position determining device, which is excellent in durability. SOLUTION: This device has a main spindle 11, which is erected in a base table 10, a pinion shaft 20, which is rotatably fitted to the main spindle 11, in the outer periphery of which pinions 21 are formed, a table 30 on which workpieces are placed, first meshing members 25 and 35, which detachably connect the pinion shaft 20 and the table 30, second meshing members 15 and 36, which detachably connect the base table 10 and the table 30, a connection driving means 41, which activates the first and second meshing members, first and second drive gears (racks 45 and 46), which mesh the pinions 21 arranged on both sides of the pinion shaft 20 so as to oppose to each other, and a drive gear driving measures. After releasing the meshing of the second meshing members, the table 30 is rotated by meshing the first meshing members with each other, and then the meshing of the first meshing members are released, and the second meshing members are meshed with each other.

Description

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

【0001】[0001]

【技術分野】本発明は,被加工物等を設置するテーブル
を主軸の回りの所定の位置に回動させる回転位置決め装
置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary positioning device for rotating a table on which a workpiece or the like is placed at a predetermined position around a main shaft.

【0002】[0002]

【従来技術】被加工物等を設置するテーブルの回転位置
決め装置は,主軸と同心の回動する軸にピニオンを配置
し,直動するラックによりピニオンを駆動し,上記回動
軸と共に回動軸に固定したテーブルを回転させるものが
知られている。例えば,実開昭63−738号公報に
は,図6に示すように,回動自在のスピンドル軸91に
テーブル92を固定し,スピンドル軸91に形成したピ
ニオン931を直動するラック932により駆動し,こ
れによりテーブル92を回転させるパレットチェンジテ
ーブル90が示されている。
2. Description of the Related Art In a rotary positioning device for a table on which a workpiece or the like is installed, a pinion is arranged on a rotating shaft concentric with a main shaft, and the pinion is driven by a linearly moving rack. There is known an apparatus that rotates a table fixed to a table. For example, in Japanese Utility Model Laid-Open No. 63-738, as shown in FIG. 6, a table 92 is fixed to a rotatable spindle shaft 91, and a pinion 931 formed on the spindle shaft 91 is driven by a rack 932 which moves linearly. Thus, a pallet change table 90 for rotating the table 92 is shown.

【0003】同図において,符号941はテーブル92
に固定された冠状歯車,符号942は固定台901に固
定された冠状歯車であり,両者941,942が噛合す
ることによりテーブル92を固定台901に固定し,両
者941,942の噛合を解除することによりテーブル
92が固定台901に対して回動可能となる。そして,
ピストン945は,テーブル92を昇降させ,これによ
って上記冠状歯車941,942を噛合させたり噛合を
解除したりするものである。同図において,符号946
はシリンダーであり,符号947,948は油圧室であ
る。
In the figure, reference numeral 941 denotes a table 92.
A reference numeral 942 denotes a crown gear fixed to the fixed base 901. The two gears 941 and 942 mesh with each other to fix the table 92 to the fixed base 901 and release the meshing of the two 941 and 942. Thus, the table 92 can be rotated with respect to the fixed base 901. And
The piston 945 raises and lowers the table 92, thereby meshing and releasing the above-mentioned crown gears 941 and 942. In FIG.
Is a cylinder, and reference numerals 947 and 948 are hydraulic chambers.

【0004】上記のように直動するラックとピニオンと
を用いる方式は,一般に装置の構成が複雑とならず,設
計,製作が比較的容易である。一方,特開平7−237
060号公報には,直動するラックを使用せず,回転す
る歯車だけを用いて,モーターによりテーブルを回転駆
動する装置が示されている(同公報の図1,図2)。即
ち,同公報の図1には,軸平行に配置されたギア群によ
ってテーブルを回転駆動する装置が示され,同公報の図
2には,傘歯車を用いて回転軸を変向しテーブルを回転
駆動する装置が示されている。しかしながら,この方式
は,ラックとピニオンを用いる方式に比べて構造が複雑
になるというデメリットがある。
The method using the rack and the pinion that move directly as described above generally does not complicate the structure of the apparatus and is relatively easy to design and manufacture. On the other hand, Japanese Unexamined Patent Publication No.
Japanese Patent Application Publication No. 060 discloses an apparatus for rotating a table by a motor using only rotating gears without using a linear rack (FIGS. 1 and 2 of the publication). That is, FIG. 1 of the publication discloses a device for driving the table to rotate by a group of gears arranged in parallel to the axis, and FIG. A device for rotational drive is shown. However, this method has a disadvantage that the structure is more complicated than the method using a rack and a pinion.

【0005】[0005]

【解決しようとする課題】ラックとピニオンを用いる上
記第1の方式は,構成が簡素であるが,ピニオン931
とラック932の歯面が磨耗しやすく,耐久性に問題が
ある。特に,テーブル92を高速で回転させると歯面の
損耗が早くなる。また,これに伴って位置精度も悪くな
る。本発明は,かかる従来の問題点に鑑みてなされたも
のであり,耐久性に優れていると共に簡素で高精度なテ
ーブルの回転位置決め装置を提供しようとするものであ
る。
The first method using a rack and a pinion has a simple structure, but has a pinion 931.
And the tooth surfaces of the rack 932 are easily worn, and there is a problem in durability. In particular, when the table 92 is rotated at a high speed, the tooth surface is quickly worn. In addition, the positional accuracy also worsens. The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a simple and highly accurate table rotation positioning device having excellent durability.

【0006】[0006]

【課題の解決手段】請求項1の発明にかかる回転位置決
め装置は,基台に立設した主軸と,外周にピニオンを形
成し上記主軸の回りに回動自在に嵌着したピニオン軸
と,テーブルと,上記ピニオン軸とテーブルとの間を着
脱自在に連結する第1の噛合部材と,上記基台とテーブ
ルとの間を着脱自在に連結する第2の噛合部材と,上記
第1,第2噛合部材を作動させる連結駆動手段と,上記
ピニオン軸の両側に互いに対向するように配置され上記
ピニオンに噛合する第1,第2の駆動歯車と,上記駆動
歯車の駆動手段と,上記連結駆動手段及び駆動歯車の駆
動手段を操作する制御手段とを有している。かつ,上記
制御手段は,第1噛合部材または第2噛合部材のいずれ
か一方のみが作動するよう制御すると共に上記ピニオン
を同一方向に駆動するよう上記第1,第2駆動歯車を駆
動制御する。そして,テーブルを回転させる場合には,
第2噛合部材の噛合を解除したのち第1噛合部材を噛合
させ,第1,第2駆動歯車を駆動して所望の位置にテー
ブルを回転させ,その後第1噛合部材の噛合を解除して
第2噛合部材を噛合させる。
According to a first aspect of the present invention, there is provided a rotary positioning device comprising: a main shaft erected on a base; a pinion shaft having a pinion formed on an outer periphery thereof and rotatably fitted around the main shaft; A first meshing member for detachably connecting the pinion shaft and the table; a second meshing member for detachably connecting the base and the table; Connecting drive means for operating a meshing member, first and second drive gears arranged on both sides of the pinion shaft so as to face each other and meshing with the pinion, drive means for the drive gear, and connection drive means And control means for operating the drive means of the drive gear. Further, the control means controls so that only one of the first meshing member and the second meshing member is operated, and controls the driving of the first and second driving gears so as to drive the pinions in the same direction. And when rotating the table,
After releasing the engagement of the second engagement member, the first engagement member is engaged, the first and second drive gears are driven to rotate the table to a desired position, and then the first engagement member is released to release the engagement. The two meshing members are meshed.

【0007】本発明において最も注目すべきことは,第
1,第2駆動歯車をピニオン軸の両側に互いに対向する
ように配置したことである。その結果,以下に述べるよ
うに,互いに噛合するピニオンと駆動歯車の歯面の磨耗
が抑制され,装置の耐久性を大幅に向上することができ
る。
The most remarkable point in the present invention is that the first and second drive gears are arranged on both sides of the pinion shaft so as to face each other. As a result, as described below, wear of the tooth surfaces of the pinion and the drive gear meshing with each other is suppressed, and the durability of the device can be greatly improved.

【0008】即ち,発明者は,ラックとピニオンを用い
る前記従来のテーブル回転駆動装置における,ピニオン
とラックの歯面の早期磨耗の原因を追求した。その結
果,その主な原因が,次のようなものであることを究明
した。即ち,ラック932がピニオン931に噛合する
ことに伴い,ピニオンの軸心に対して垂直方向の力が働
き,その反力によりピニオン軸91に撓みが生ずること
による。一方,本発明においては,駆動歯車は,対にな
りピニオンの両側から互いに反対方向からピニオンに噛
合するから,ピニオンの軸心に垂直に働く力は互いに相
殺され,ピニオン軸に撓みが生じなくなり,歯面の磨耗
が生じ難くなる(図1参照)。
That is, the inventor pursued a cause of premature wear of the tooth surfaces of the pinion and the rack in the conventional table rotation driving device using the rack and the pinion. As a result, they found that the main causes were as follows. That is, when the rack 932 meshes with the pinion 931, a force in the vertical direction acts on the axis of the pinion, and the reaction force causes the pinion shaft 91 to bend. On the other hand, in the present invention, the drive gears are paired and mesh with the pinion from opposite sides from both sides of the pinion, so that forces acting perpendicularly to the axis of the pinion cancel each other out, and the pinion shaft does not bend. Wear on the tooth surface is less likely to occur (see FIG. 1).

【0009】それ故,装置の耐久性は大幅に向上する。
また,ピニオン軸の撓みと歯面の損耗を抑制することに
より,位置制御の精度も向上する。そして,駆動歯車を
ピニオン軸の両側に互いに対向するように配置すること
は,機構的な構成が容易であり装置は簡素に構成するこ
とができる。
Therefore, the durability of the device is greatly improved.
Further, by suppressing the bending of the pinion shaft and the wear of the tooth surface, the accuracy of the position control is also improved. In addition, arranging the drive gears on both sides of the pinion shaft so as to face each other can be easily configured mechanically and can simplify the apparatus.

【0010】なお,上記駆動歯車は,円形の歯車の他
に,請求項2記載のように直動するラックを用いること
ができる。そして,ラックを用いる場合には,請求項2
記載のように,テーブルを回転させた後,第1噛合部材
の噛合を解除して第2噛合部材を噛合させ,上記第1,
第2ラックを元の位置に復元させておく。そして,ラッ
クの場合には,シリンダー等の往復運動手段を用いるこ
とができ,構成が簡素となる。
[0010] The drive gear may be a circular gear or a linear rack. And, when a rack is used, claim 2
As described above, after rotating the table, the first meshing member is disengaged, and the second meshing member is meshed.
The second rack is restored to the original position. In the case of a rack, reciprocating means such as a cylinder can be used, and the configuration is simplified.

【0011】また,請求項3記載のように,上記駆動歯
車またはラックの動作位置もしくは移動量を検知する歯
車の動作検知手段を設け,上記動作検知手段の出力に基
づいて上記駆動歯車またはラックの位置または移動量を
フィードバック制御することが好ましい。これにより,
ラックまたはピニオンの位置,即ちテーブルの回転量を
精度よく制御することができ,また高速かつ滑らな位置
合わせが可能となる。
According to a third aspect of the present invention, there is provided a gear operation detecting means for detecting an operation position or a moving amount of the drive gear or the rack, and the drive gear or the rack is detected based on an output of the operation detection means. It is preferable to perform feedback control of the position or the movement amount. This gives
The position of the rack or pinion, that is, the amount of rotation of the table can be accurately controlled, and high-speed and smooth positioning can be performed.

【0012】そして,特に高速で位置合わせを行う場合
には,停止時に歯車の噛み合わせ部に衝撃が加わらない
ように速度を適切に制御することが肝要である。即ち,
制御開始時の立ち上がり速度と,停止近傍における立ち
下がり速度の変化を適切に推移させ,中間段階は高速に
動作させて迅速,高精度かつ衝撃のないソフトランディ
ングの制御を行うようにする。
In particular, when positioning is performed at a high speed, it is important to appropriately control the speed so that no impact is applied to the meshing portion of the gear when the gear is stopped. That is,
The change of the rise speed at the start of control and the fall speed near the stop are appropriately changed, and the intermediate stage is operated at high speed to perform quick, accurate, and impact-free soft landing control.

【0013】[0013]

【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION

実施形態例 本例は,図1,図2に示すように,被加工物等を設置す
るテーブル30を主軸11の回りの所定の位置に回動さ
せる回転位置決め装置1である。上記回転位置決め装置
1は,図1に示すように,基台10に立設した主軸11
と,外周にピニオン21を形成し主軸11の回りに回動
自在に嵌着したピニオン軸20と,被加工物等を設置す
るテーブル30と,ピニオン軸20とテーブル30との
間を着脱自在に連結する第1の噛合部材25,35と,
基台10とテーブル30との間を着脱自在に連結する第
2の噛合部材15,36と,ピストン411を用いて上
記第1,第2噛合部材25,35,15,36を作動さ
せる連結駆動手段41と,ピニオン軸20の両側に互い
に対向するように平行に配置されピニオン21に噛合す
る第1,第2のラック45,46と,ラック45,46
の駆動手段としてのシリンダー47,48(図2)と,
連結駆動手段41及びラック45,46の駆動手段(シ
リンダー47,48)を操作する図示しない制御手段と
を有している。
Embodiment This embodiment is a rotary positioning device 1 for rotating a table 30 on which a workpiece or the like is installed to a predetermined position around a main shaft 11, as shown in FIGS. As shown in FIG. 1, the rotation positioning device 1 includes a main shaft 11 erected on a base 10.
A pinion shaft 20 having a pinion 21 formed on its outer periphery and rotatably fitted around the main shaft 11, a table 30 on which a workpiece or the like is installed, and a detachable connection between the pinion shaft 20 and the table 30. First engaging members 25 and 35 to be connected;
A second drive member 15 and 36 for detachably connecting the base 10 and the table 30 to each other, and a connection drive for operating the first and second drive members 25, 35, 15 and 36 using a piston 411. Means 41, first and second racks 45 and 46, which are arranged in parallel on both sides of the pinion shaft 20 so as to face each other and mesh with the pinion 21, and racks 45 and 46.
Cylinders 47 and 48 (FIG. 2) as driving means for
A control unit (not shown) for operating the connection driving unit 41 and the driving units (cylinders 47, 48) of the racks 45, 46 is provided.

【0014】制御手段は,第1噛合部材25,35また
は第2噛合部材15,36のいずれか一方のみが作動す
るよう制御すると共にピニオン21を同一方向に駆動す
るようラック45,46を駆動制御する。また,制御手
段は,テーブル30を回転させる場合には,第2噛合部
材15,36の噛合を解除したのち第1噛合部材25,
35を噛合させ,シリンダー47,48により第1,第
2ラック45,46を駆動して所望の位置にテーブル3
0を回転させる。その後,第1噛合部材25,35の噛
合を解除して第2噛合部材15,36を噛合させ,第
1,第2ラック45,46を元の位置に復元させる。
The control means controls only one of the first meshing members 25 and 35 and the second meshing members 15 and 36 to operate, and drives and controls the racks 45 and 46 to drive the pinion 21 in the same direction. I do. When rotating the table 30, the control means releases the first meshing members 25, 36 after releasing the meshing of the second meshing members 15, 36.
The first and second racks 45 and 46 are driven by the cylinders 47 and 48 to move the table 3 to a desired position.
Rotate 0. Thereafter, the first meshing members 25, 35 are disengaged from each other, the second meshing members 15, 36 are meshed, and the first and second racks 45, 46 are restored to their original positions.

【0015】また,ラック46の位置を検知する動作検
知手段65(図1)が設けられており,制御手段は,動
作検知手段65の出力に基づいてラック45,46の位
置をフィードバック制御し,またラック45,46の移
動速度を図5に示す速度カーブ60に従って制御する。
以下,それぞれについて説明を補足する。
An operation detecting means 65 (FIG. 1) for detecting the position of the rack 46 is provided, and the control means performs feedback control of the positions of the racks 45 and 46 based on the output of the operation detecting means 65. The moving speed of the racks 45 and 46 is controlled according to a speed curve 60 shown in FIG.
The following is a supplementary explanation for each.

【0016】図1に示すように,テーブル30は,テー
ブル側の第1,第2噛合部材35,36と一体に主軸1
1の周りに回動することができる。そして,テーブル側
の第2噛合部材36を,基台10に固定した他方の第2
噛合部材15に噛合させることにより,テーブル30
は,主軸11を立設した基台10に固定される。同図に
おいて符号37は,テーブル30に固定されたキャップ
である。
As shown in FIG. 1, the table 30 includes a main shaft 1 integrally with first and second meshing members 35 and 36 on the table side.
1 can be pivoted around. Then, the second engagement member 36 on the table side is fixed to the base 10 by the other second engagement member 36.
The table 30 is engaged with the engagement member 15.
Is fixed to the base 10 on which the main shaft 11 is erected. In the figure, reference numeral 37 denotes a cap fixed to the table 30.

【0017】第2噛合部材15,36は,図3に示すよ
うに,金属製のボール151(361)をリング状の溝
152(362)に埋設した構造体である(シンポ工業
株式会社製,商品名ボールデックス)。そして,図3
(a)に示すように両噛合部材15,36を離隔させボ
ール151,361間にギャップδを設けたた非噛合の
状態から,図3(b)に示すように両噛合部材15,3
6を近接させボール151,361を押圧接触させるこ
とにより,両噛合部材15,36は互いに噛合し連結さ
れる。
As shown in FIG. 3, the second meshing members 15 and 36 have a structure in which a metal ball 151 (361) is embedded in a ring-shaped groove 152 (362) (manufactured by Shinpo Kogyo Co., Ltd.). Product name Balldex). And FIG.
As shown in FIG. 3 (a), the two meshing members 15, 36 are separated from each other and a gap δ is provided between the balls 151, 361.
6 are brought close to each other and the balls 151 and 361 are brought into pressure contact with each other, whereby the two meshing members 15 and 36 mesh with each other and are connected.

【0018】また,テーブル30側の第1噛合部材35
は,図1に示すように,ピニオン軸20にリング22を
介して固定された他方の第1噛合部材25に噛合または
脱離することができる。即ち,両噛合部材25,35
は,互いに近接,離隔することにより噛合,脱離する対
向した歯部251,351を有する。そして,上記第
1,第2噛合部材25,35,15,36を駆動する連
結駆動手段41は,以下に述べるように構成されてい
る。
The first meshing member 35 on the table 30 side
As shown in FIG. 1, can be engaged with or disengaged from the other first engaging member 25 fixed to the pinion shaft 20 via the ring 22. That is, both meshing members 25, 35
Have opposed teeth 251 and 351 that engage and disengage when approaching or separating from each other. The connection drive means 41 for driving the first and second engagement members 25, 35, 15, 36 is configured as described below.

【0019】即ち,連結駆動手段41を構成するピスト
ン411は,スラスト軸受421,422を介して,テ
ーブル30側の第1噛合部材35と第1噛合部材35と
一体のホルダー34により軸方向に固定されている。ま
た,基台10の上部101とシリンダーカバー43とに
より,上下に油圧室441,442をもつシリンダーが
形成されている。
That is, the piston 411 constituting the connection driving means 41 is axially fixed by the first meshing member 35 on the table 30 side and the holder 34 integrated with the first meshing member 35 via the thrust bearings 421 and 422. Have been. The upper part 101 of the base 10 and the cylinder cover 43 form a cylinder having upper and lower hydraulic chambers 441 and 442.

【0020】そして,油圧配管443に作動油を注入す
ることにより,油圧室441に作動油が流入しピストン
411は同図の上方に移動し,テーブル30とテーブル
30と一体の部材34〜37が上昇し,第1噛合部材2
5,35を噛合させ第2噛合部材15,36の噛合を解
除する。また,油圧配管444に作動油を注入すること
により,油圧室442に作動油が流入しピストン411
は同図の下方に移動し,テーブル30とテーブル30と
一体の部材34〜37が下降して,第1噛合部材25,
35の噛合を解除させ第2噛合部材15,36を噛合さ
せる。
When hydraulic oil is injected into the hydraulic pipe 443, the hydraulic oil flows into the hydraulic chamber 441, the piston 411 moves upward in the figure, and the table 30 and the members 34 to 37 integrated with the table 30 are moved. Ascending, the first engagement member 2
5 and 35 are engaged with each other, and the engagement of the second engagement members 15 and 36 is released. Also, by injecting the hydraulic oil into the hydraulic pipe 444, the hydraulic oil flows into the hydraulic chamber 442 and the piston 411
Moves downward in the figure, and the table 30 and the members 34 to 37 integral with the table 30 move down, and the first meshing member 25,
The engagement of the second engagement members 15 and 36 is released by disengaging the engagement of the first engagement member 35.

【0021】一方,ピニオン軸20は,主軸11を回転
中心軸として旋回可能である。符号221は軸受けであ
り,基台10とベアリングカバー121とにより軸受け
221の外輪を保持し,ピニオン軸20の外周とベアリ
ング押さえ122とにより,軸受け221の内輪を保持
している。ラック45,46は,図2に示すように,ピ
ニオン軸20を間にして互いに平行に配置され,ピニオ
ン21に噛合する。
On the other hand, the pinion shaft 20 is rotatable around the main shaft 11 as a rotation center axis. Reference numeral 221 denotes a bearing, which holds the outer ring of the bearing 221 by the base 10 and the bearing cover 121, and holds the inner ring of the bearing 221 by the outer periphery of the pinion shaft 20 and the bearing retainer 122. As shown in FIG. 2, the racks 45 and 46 are arranged in parallel with each other with the pinion shaft 20 interposed therebetween, and mesh with the pinion 21.

【0022】そして,第2ラック46には,位置検知用
のピニオン66が噛合しており,ピニオン66は,図1
に示すように,軸受け67に回動可能なように保持され
でおり,カップリング68を介して動作検知手段65に
連結されている。動作検知手段65は,回転量に対応し
た数のパルスを発信する回転センサーである。
A pinion 66 for position detection is engaged with the second rack 46.
As shown in (1), it is rotatably held by a bearing 67 and is connected to an operation detecting means 65 via a coupling 68. The operation detecting means 65 is a rotation sensor that transmits a number of pulses corresponding to the amount of rotation.

【0023】ラック45(46)を駆動するシリンダー
47(48)は,図2に示すように,シリンダーチュー
ブ471,472(481,482)とシリンダーヘッ
ド473,474(483,484)とを有する。同図
において,符号475,476(485,486)は,
ストッパーであり,ラック45(46)の動作端におい
てラック45(46)に当接する。
As shown in FIG. 2, the cylinder 47 (48) for driving the rack 45 (46) has cylinder tubes 471, 472 (481, 482) and cylinder heads 473, 474 (483, 484). In the figure, reference numerals 475 and 476 (485 and 486) indicate
It is a stopper, which contacts the rack 45 (46) at the operating end of the rack 45 (46).

【0024】そして,油道477又は478(487又
は488)に作動油を流入させることにより,ラック4
5(46)を左又は右に移動させる。また,符号479
(489)はクッション油道であり,油道477又は4
78(487又は488)に連通しており,ラック45
(46)が終端近傍になった場合に,ラック45(4
6)の速度を減速させる。
Then, the hydraulic oil flows into the oil passage 477 or 478 (487 or 488), so that the rack 4
5 (46) is moved left or right. Also, reference numeral 479
(489) is a cushion oilway, and oilway 477 or 4
78 (487 or 488).
When (46) is near the end, the rack 45 (4
Reduce the speed of 6).

【0025】制御手段は,テーブル30を回転させる場
合には,始めに,図1に示す油圧配管443に作動油を
注入することにより,ピストン411を図1の上方に移
動させ,第2噛合部材15,36の噛合を解除して第1
噛合部材25,35を噛合させる。続いて,図2に示す
油道477及び478(487及び488)に作動油を
流入させることにより,ラック45(46)を左又は右
に移動させ所望の位置にテーブル30を回転させる。
When rotating the table 30, the control means first injects hydraulic oil into the hydraulic pipe 443 shown in FIG. 1 to move the piston 411 upward in FIG. 15 and 36 are released
The meshing members 25 and 35 are meshed. Subsequently, the operating oil flows into the oil passages 477 and 478 (487 and 488) shown in FIG. 2 to move the rack 45 (46) left or right and rotate the table 30 to a desired position.

【0026】この時,制御手段は,動作検知手段65を
介してラック45(46)の移動速度を算出し,ラック
45(46)の速度が図5に示す速度カーブ60に従っ
て推移するように制御する。これにより,停止時の衝撃
を緩和すると共に途中の速度を高速にすることによって
高速で滑らかな動作を可能となる。その後,図1に示す
油圧配管444に作動油を注入することにより,ピスト
ン411を同図の下方に移動させ(図1の状態),第1
噛合部材25,35の噛合を解除して第2噛合部材1
5,36を噛合させ,第1,第2ラック45,46を上
記と同様の速度カーブ60に従って元の位置に復元させ
る。
At this time, the control means calculates the moving speed of the rack 45 (46) via the motion detecting means 65, and controls the speed of the rack 45 (46) to change according to the speed curve 60 shown in FIG. I do. As a result, the shock at the time of stopping is reduced, and the speed in the middle is increased, thereby enabling a high-speed and smooth operation. Thereafter, by injecting hydraulic oil into the hydraulic pipe 444 shown in FIG. 1, the piston 411 is moved downward in FIG.
The meshing members 25 and 35 are released from meshing, and the second meshing member 1 is released.
The first and second racks 45 and 46 are restored to their original positions according to the same speed curve 60 as described above.

【0027】本例の回転位置決め装置1においては,ピ
ニオン軸20の両側にラック45,46を対向させて設
けたことにより,ラック45によりピニオン21が受け
る反力とラック46によりピニオン21が受ける反力と
が相殺する。そのため,ピニオン軸20の撓みを防止す
ることはが可能となり,テーブル30を高速で位置決め
することができると共に歯車の歯面の損耗が減少する。
In the rotary positioning device 1 of the present embodiment, the racks 45 and 46 are provided on both sides of the pinion shaft 20 so as to face each other, so that the reaction force received by the pinion 21 by the rack 45 and the reaction force received by the pinion 21 by the rack 46. Power offsets. Therefore, the bending of the pinion shaft 20 can be prevented, the table 30 can be positioned at a high speed, and wear of the gear tooth surface is reduced.

【0028】また,図5に示す適切な速度カーブ60に
従ってラック45,46はを駆動することにより,テー
ブル30を高速で回転した場合にも,停止時の衝撃力を
低減し,歯車等の耐久性を向上させると共に位置制御の
精度を向上することができる。なお,本例では,ラック
45,46をシリンダー47,48により駆動する例を
示したが,電動機と歯車によって構成してもよく,ま
た,ラックに代えて円形の歯車を用いてもよい。
Further, by driving the racks 45 and 46 according to an appropriate speed curve 60 shown in FIG. 5, even when the table 30 is rotated at a high speed, the impact force at the time of stop is reduced, and the durability of gears and the like is reduced. And the accuracy of position control can be improved. In this example, the racks 45 and 46 are driven by the cylinders 47 and 48. However, the racks 45 and 46 may be driven by electric motors and gears, or circular gears may be used instead of the racks.

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

【図1】実施形態例の回転位置決め装置の断面正面図。FIG. 1 is a sectional front view of a rotary positioning device according to an embodiment.

【図2】図1のA−A矢視線断面図。FIG. 2 is a sectional view taken along line AA of FIG.

【図3】実施形態例の第2噛合部材の模式的な平面図。FIG. 3 is a schematic plan view of a second meshing member of the embodiment.

【図4】実施形態例の第2噛合部材の部分的な拡大正面
図((a)は非噛合時を,(b)は噛合時を示す)。
FIG. 4 is a partially enlarged front view of a second meshing member of the embodiment ((a) shows a non-meshing state, and (b) shows a meshing state).

【図5】実施形態例のラックの速度制御カーブを示す
図。
FIG. 5 is a view showing a rack speed control curve according to the embodiment;

【図6】従来の回転位置決め装置の断面正面図。FIG. 6 is a sectional front view of a conventional rotary positioning device.

【符号の説明】 10...基台, 11...主軸, 15,25,35,36...噛合部材, 20...ピニオン軸, 21...ピニオン, 30...テーブル, 41...連結駆動手段, 45,46...駆動歯車(ラック),[Explanation of reference numerals] . . Base, 11. . . Main shaft, 15, 25, 35, 36. . . Engagement member, 20. . . Pinion shaft, 21. . . Pinion, 30. . . Table, 41. . . Coupling drive means, 45, 46. . . Drive gear (rack),

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 被加工物等を設置するテーブルを主軸の
回りの所定の位置に回動させる回転位置決め装置であっ
て,基台に立設した主軸と,外周にピニオンを形成し上
記主軸の回りに回動自在に嵌着したピニオン軸と,被加
工物等を設置するテーブルと,上記ピニオン軸とテーブ
ルとの間を着脱自在に連結する第1の噛合部材と,上記
基台とテーブルとの間を着脱自在に連結する第2の噛合
部材と,上記第1,第2噛合部材を作動させる連結駆動
手段と,上記ピニオン軸の両側に互いに対向するように
配置され上記ピニオンに噛合する第1,第2の駆動歯車
と,上記駆動歯車の駆動手段と,上記連結駆動手段及び
駆動歯車の駆動手段を操作する制御手段とを有してお
り,上記制御手段は,第1噛合部材または第2噛合部材
のいずれか一方のみが作動するよう制御すると共に上記
ピニオンを同一方向に駆動するよう上記第1,第2駆動
歯車を駆動制御し,テーブルを回転させる場合には,第
2噛合部材の噛合を解除したのち第1噛合部材を噛合さ
せ,第1,第2駆動歯車を駆動して所望の位置にテーブ
ルを回転させ,その後第1噛合部材の噛合を解除して第
2噛合部材を噛合させることを特徴とするテーブルの回
転位置決め装置。
1. A rotary positioning device for rotating a table on which a workpiece or the like is set to a predetermined position around a main spindle, wherein the main spindle is erected on a base and a pinion is formed on an outer periphery of the main spindle. A pinion shaft rotatably fitted around, a table on which a workpiece or the like is installed, a first meshing member for detachably connecting the pinion shaft to the table, the base and the table, A second meshing member for detachably connecting the first and second meshing members, a coupling driving means for operating the first and second meshing members, and a second meshing member arranged on both sides of the pinion shaft so as to face each other and mesh with the pinion. 1, a second driving gear, a driving means of the driving gear, and a control means for operating the coupling driving means and the driving means of the driving gear, wherein the control means comprises a first meshing member or a second driving means. Only one of the two meshing members When the table is rotated, the first and second drive gears are driven and controlled to drive the pinion in the same direction. When the table is rotated, the first meshing member is released after releasing the meshing of the second meshing member. Rotating the table to a desired position by driving the first and second drive gears, and then releasing the first meshing member and meshing the second meshing member. Positioning device.
【請求項2】 請求項1において,前記第1,第2駆動
歯車は,直動するラックであり,上記第1,第2ラック
は前記ピニオン軸の両側に対向して平行に配置されてお
り,テーブルを回転させる場合には,第2噛合部材の噛
合を解除したのち第1噛合部材を噛合させ,上記第1,
第2ラックを駆動して所望の位置にテーブルを回転さ
せ,その後第1噛合部材の噛合を解除して第2噛合部材
を噛合させ,上記第1,第2ラックを元の位置に復元さ
せることを特徴とするテーブルの回転位置決め装置。
2. The device according to claim 1, wherein said first and second drive gears are linearly moving racks, and said first and second racks are arranged in parallel on opposite sides of said pinion shaft. When the table is rotated, the first meshing member is meshed with the second meshing member after the second meshing member is disengaged.
Driving the second rack to rotate the table to a desired position, then releasing the first meshing member to mesh the second meshing member, and restoring the first and second racks to their original positions. A rotary positioning device for a table.
【請求項3】 請求項1または請求項2において,前記
駆動歯車またはラックの動作位置もしくは移動量を検知
する歯車の動作検知手段が設けられており,前記制御手
段は,上記動作検知手段の出力に基づいて上記駆動歯車
またはラックの位置または移動量をフィードバック制御
することを特徴とするテーブルの回転位置決め装置。
3. The apparatus according to claim 1, further comprising gear operation detecting means for detecting an operation position or an amount of movement of the drive gear or the rack, and wherein the control means outputs the output of the operation detecting means. Feedback control of the position or the amount of movement of the drive gear or the rack based on the table.
JP28938896A 1996-10-11 1996-10-11 Rotational position determining device Pending JPH10113848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28938896A JPH10113848A (en) 1996-10-11 1996-10-11 Rotational position determining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28938896A JPH10113848A (en) 1996-10-11 1996-10-11 Rotational position determining device

Publications (1)

Publication Number Publication Date
JPH10113848A true JPH10113848A (en) 1998-05-06

Family

ID=17742583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28938896A Pending JPH10113848A (en) 1996-10-11 1996-10-11 Rotational position determining device

Country Status (1)

Country Link
JP (1) JPH10113848A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002126976A (en) * 2000-10-25 2002-05-08 Kondo Seisakusho:Kk Multi-position stopping index table
CN112475945A (en) * 2020-11-05 2021-03-12 广州理工学院 Precise rotary worktable
CN114102174A (en) * 2021-12-09 2022-03-01 广东普拉迪科技股份有限公司 Novel end-toothed disc rotary table

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002126976A (en) * 2000-10-25 2002-05-08 Kondo Seisakusho:Kk Multi-position stopping index table
CN112475945A (en) * 2020-11-05 2021-03-12 广州理工学院 Precise rotary worktable
CN114102174A (en) * 2021-12-09 2022-03-01 广东普拉迪科技股份有限公司 Novel end-toothed disc rotary table

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