JPH0112619B2 - - Google Patents
Info
- Publication number
- JPH0112619B2 JPH0112619B2 JP58075385A JP7538583A JPH0112619B2 JP H0112619 B2 JPH0112619 B2 JP H0112619B2 JP 58075385 A JP58075385 A JP 58075385A JP 7538583 A JP7538583 A JP 7538583A JP H0112619 B2 JPH0112619 B2 JP H0112619B2
- Authority
- JP
- Japan
- Prior art keywords
- main shaft
- spindle
- feed
- quill
- feed screw
- 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.)
- Expired
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Landscapes
- Gripping On Spindles (AREA)
- Turning (AREA)
- Jigs For Machine Tools (AREA)
Description
【発明の詳細な説明】 〈技術分野〉 本発明は、工作機械の主軸制御装置に関する。[Detailed description of the invention] <Technical field> The present invention relates to a spindle control device for a machine tool.
〈従来技術〉
主軸を回転可能に軸支したクイルを移動可能に
内装したクイルタイプの主軸頭において、従来、
主軸・クイルの移動は、第１図に示すように主軸
頭内部で主軸頭側に両端部を軸支した送りネジａ
に螺合するナツトｂを、クイルｃの側部に固設
し、送りネジａの回転によりナツトｂ及びクイル
ｃ、主軸ｄが移動するようにされているのが一般
的である。<Prior art> In a quill-type spindle head in which a quill with a rotatably supported spindle is movably incorporated, conventionally,
The movement of the spindle and quill is controlled by a feed screw a whose both ends are pivotally supported inside the spindle head on the spindle head side, as shown in Figure 1.
Generally, a nut b, which is screwed into the quill c, is fixed to the side of the quill c, and the nut b, the quill c, and the main shaft d are moved by rotation of the feed screw a.
しかしこの方式では送りネジａの中心とクイル
ｃの外周面の摺動部の中心が一致していないた
め、送り力の偏心モーメントが発生し、クイルｃ
の送りの真直性が損われ、特に深穴ボーリング等
の加工精度を低下させる要因となつていた。 However, in this method, since the center of the feed screw a and the center of the sliding part on the outer circumferential surface of the quill c do not match, an eccentric moment of the feed force occurs, and the quill c
The straightness of the feed is impaired, which is a factor that reduces machining accuracy, especially in deep hole boring.
〈目的〉
本発明は、上記の不具合をなくすため、主軸及
びクイルの中心と送りネジの中心を一致させ得る
送り駆動装置を具えた主軸制御装置の提供を目的
としている。<Objective> In order to eliminate the above-mentioned problems, the present invention aims to provide a main shaft control device equipped with a feed drive device that can align the centers of the main shaft and quill with the centers of the feed screw.
〈実施例〉
以下、本発明の一実施例を第２図ないし第４図
に基づいて説明する。図中Ｒはクロスレールで、
その摺動部に横移動可能に主軸頭１が装架され、
該主軸頭１の内部には昇降可能に装架されたクイ
ル９が、またクイル９内には回転可能に主軸８が
軸支されている。<Example> Hereinafter, an example of the present invention will be described based on FIGS. 2 to 4. R in the diagram is crossrail,
A spindle head 1 is mounted on the sliding part so as to be able to move laterally,
A quill 9 is mounted inside the spindle head 1 so as to be movable up and down, and a main shaft 8 is rotatably supported within the quill 9.
主軸頭１の上部に主軸８の回転変換用ギヤを内
装した主軸駆動ギヤケース２が設置され、該主軸
駆動ギヤケース２の上部に主軸８の回転用の主軸
駆動モータ３が設置されている。主軸駆動モータ
３のモータ軸と主軸８とは、モータピニオン、連
結ギヤ、変換ギヤによつて連結され、主軸駆動モ
ータの回転が主軸８に伝達され、主軸８が回転す
るようにされることにより、主軸駆動装置Ａが構
成される。 A spindle drive gear case 2 containing a gear for rotating the spindle 8 is installed above the spindle head 1, and a spindle drive motor 3 for rotating the spindle 8 is installed above the spindle drive gear case 2. The motor shaft of the main shaft drive motor 3 and the main shaft 8 are connected by a motor pinion, a connection gear, and a conversion gear, and the rotation of the main shaft drive motor is transmitted to the main shaft 8, so that the main shaft 8 rotates. , a main shaft drive device A is constructed.
主軸駆動モータ３に近接して主軸駆動ギヤケー
ス２の上部に、送り駆動装置５が設置され、該装
置５の上部には主軸８、クイル９を軸線方向に移
動するための駆動部の主軸送りギヤケース６が設
置されている。さらに、主軸送りギヤケース６の
上部に工具着脱のためのシリンダー７が設置され
ている。また主軸送りギヤケース６の後部下面に
主軸送り駆動用の主軸送りモータ４が上向きに垂
設されている。 A feed drive device 5 is installed on the top of the main shaft drive gear case 2 in proximity to the main shaft drive motor 3, and a main shaft feed gear case of a drive section for moving the main shaft 8 and quill 9 in the axial direction is installed on the top of the device 5. 6 is installed. Furthermore, a cylinder 7 for attaching and detaching tools is installed at the top of the main shaft feed gear case 6. Further, a spindle feed motor 4 for driving the spindle feed is provided vertically upward on the rear lower surface of the spindle feed gear case 6 .
なお、前記シリンダー７は主軸頭１に内装され
た主軸８と中心線が一致するよう設置されてい
る。 The cylinder 7 is installed so that its center line coincides with the main shaft 8 installed inside the main shaft head 1.
主軸８の下端の頭部８ａはクイル９の下端部に
突設され、他方の上部は主軸駆動ギヤケース２内
に貫通され送り駆動装置５の本体５ａ内に設置さ
れたハウジング１３内に軸支されている。また主
軸８の中心部には貫通穴１０が開けられており、
貫通穴１０内の下方には工具Ｅの着脱装置Ｂを構
成する工具着脱用軸１１が昇降可能に挿入されて
いる。さらに主軸８の貫通穴１０内で軸１１の上
部位置に主軸８を昇降するための送りネジ１４が
回転可能に挿入されている。該送りネジ１４の下
端部は細径にされ、細径外周部に軸受１５が嵌入
されている。また軸受１５の外周部はハウジング
１６で保持され、さらにハウジング１６の外周面
にスライドブツシユ１７が嵌入され固定されてい
る。スライドブツシユ１７の外周面は主軸８の内
周面に当接されており、回転自在かつ昇降自在と
されている。 The head 8a at the lower end of the main shaft 8 is provided to protrude from the lower end of the quill 9, and the other upper part is pivotally supported within a housing 13 that penetrates into the main shaft drive gear case 2 and is installed within the main body 5a of the feed drive device 5. ing. In addition, a through hole 10 is made in the center of the main shaft 8.
A tool attaching/detaching shaft 11 constituting a tool E attaching/detaching device B is inserted into the lower part of the through hole 10 so as to be movable up and down. Furthermore, a feed screw 14 for raising and lowering the main shaft 8 is rotatably inserted into the through hole 10 of the main shaft 8 at an upper position of the shaft 11. The lower end portion of the feed screw 14 has a small diameter, and a bearing 15 is fitted into the small diameter outer peripheral portion. Further, the outer peripheral portion of the bearing 15 is held by a housing 16, and a slide bush 17 is fitted and fixed onto the outer peripheral surface of the housing 16. The outer circumferential surface of the slide bush 17 is in contact with the inner circumferential surface of the main shaft 8, and is rotatable and movable up and down.
送りネジ１４のネジ部にはナツト２１が螺合さ
れ、該ナツト２１の下面に円筒形のハウジング１
３が固設されている。ハウジング１３の外径部に
垂直方向に回り止め用のキー２２が固設され、該
キー２２は、送り駆動装置５の本体５ａ側面に垂
直方向に設けたキー溝２３に滑動自在に挿通され
ている。ハウジング１３の内径部に主軸８の上端
部が軸受２４，２５及び受け金４０によつて回転
可能に挿着されている。このように構成された変
換装置Ｃの送りネジ１４の回転により、キー２２
によつて回転不能とされたナツト２１、ハウジン
グ１３が昇降され、さらにハウジング１３に挿着
された主軸８が昇降される。また、主軸８の軸方
向移動のみをクイル９に伝える伝動手段Ｄは、両
者８，９間の軸受Ｆ，ＦとスリーブＧとから構成
される。 A nut 21 is screwed into the threaded portion of the feed screw 14, and a cylindrical housing 1 is attached to the lower surface of the nut 21.
3 is fixed. A locking key 22 is vertically fixed to the outer diameter of the housing 13, and the key 22 is slidably inserted into a key groove 23 vertically provided on the side surface of the main body 5a of the feed drive device 5. There is. The upper end of the main shaft 8 is rotatably inserted into the inner diameter of the housing 13 by bearings 24, 25 and a receiver 40. By rotation of the feed screw 14 of the converter C configured in this way, the key 22
The nut 21, which is made non-rotatable, and the housing 13 are moved up and down, and the main shaft 8 inserted into the housing 13 is also moved up and down. Further, a transmission means D that transmits only the axial movement of the main shaft 8 to the quill 9 is composed of bearings F, F between the two 8 and 9, and a sleeve G.
送りネジ１４の上端部は、送り駆動装置５の本
体５ａの上部と、主軸送りギヤケース６の底部間
に挿着したハウジング２６内で軸受４１を介して
回転自在にされている。また送りネジ１４の上端
部には、主軸送りギヤケース６内で送りギヤ２７
がキー２８，２９によつて嵌着されている。なお
送りネジ１４の上端面は主軸送りギヤケース６の
上部カバー２９のほぼ上面位置までとされてい
る。送りネジ１４の軸心部に貫通穴が開けられ、
該貫通穴内に工具着脱用軸１１を押す押棒３１が
挿通されている。該押棒３１の上端部に螺着され
たナツト３２と送りネジ１４の上端面間にスプリ
ング３３が介装され、他方の下端部においても下
端部に嵌着したスナツプリング３４と送りネジ１
４の下端面間にスプリング３５が介装されてい
る。これにより押棒３１は送りネジ１４の貫通穴
内を軸方向に移動可能にされている。また押棒３
１の下端面は工具着脱用軸１１の上端面に近接
（主軸８が最上部位置にある時）し、上端面はシ
リンダ７内のピストン杆３６の下端面に近接され
ている。主軸送りギヤケース６は、主軸送り装置
５の上部で後部を突出して固設されている。該主
軸送りギヤケース６の後部下面には、送りネジ回
転のための駆動モータ４が上向きに垂設されてい
る。送りギヤケース６内に嵌入された駆動モータ
４のモータ軸３７にピニオン３８が挿着され、該
ピニオン３８は中間ギヤ３９、送りギヤ２７と連
結されており、駆動モータ４により送りネジ１４
が回転される。 The upper end of the feed screw 14 is rotatable via a bearing 41 within a housing 26 inserted between the top of the main body 5a of the feed drive device 5 and the bottom of the main shaft feed gear case 6. Further, a feed gear 27 is attached to the upper end of the feed screw 14 in the main shaft feed gear case 6.
are fitted by keys 28 and 29. Note that the upper end surface of the feed screw 14 extends almost to the upper surface position of the upper cover 29 of the main shaft feed gear case 6. A through hole is made in the axial center of the feed screw 14,
A push rod 31 for pushing the tool attachment/detachment shaft 11 is inserted into the through hole. A spring 33 is interposed between a nut 32 screwed to the upper end of the push rod 31 and the upper end surface of the feed screw 14, and a snap ring 34 fitted to the lower end of the other lower end and the feed screw 1 are interposed.
A spring 35 is interposed between the lower end surfaces of 4. This allows the push rod 31 to move in the axial direction within the through hole of the feed screw 14. Also push rod 3
The lower end surface of the tool attachment/detachment shaft 11 is close to the upper end surface (when the main shaft 8 is at the uppermost position), and the upper end surface is close to the lower end surface of the piston rod 36 in the cylinder 7. The main shaft feeding gear case 6 is fixedly installed at the upper part of the main shaft feeding device 5 with its rear part protruding. A drive motor 4 for rotating a feed screw is vertically installed on the rear lower surface of the main shaft feed gear case 6. A pinion 38 is inserted into the motor shaft 37 of the drive motor 4 fitted into the feed gear case 6 , and the pinion 38 is connected to an intermediate gear 39 and the feed gear 27 .
is rotated.
次に作動を説明すると、NC装置の指令により
主軸送り用モータ４が駆動され、該モータの回転
によりモータ軸３７に挿着されたピニオン３８、
中間ギヤ３９、送りギヤ２７を介して送りネジ１
４が回転する。送りネジ１４のネジ部に螺合され
たナツト２１とナツト２１に固設されたハウジン
グ１３は、これに固設されたキー２２と送り装置
壁部に設けられたキー溝２３との嵌合によつて回
転不能にされているため、ナツト２１、ハウジン
グ１３は送りネジ１４の軸方向に移動し、ハウジ
ング１３の円筒部内に軸受２４，２５、受け金４
０により軸支された主軸８もナツト２１、ハウジ
ング１３の動きに応じて移動し、主軸８の移動と
共に主軸８を軸支しているクイル９も移動する。 Next, to explain the operation, the main shaft feed motor 4 is driven by a command from the NC device, and the pinion 38 inserted into the motor shaft 37 is driven by the rotation of the motor.
Feed screw 1 via intermediate gear 39 and feed gear 27
4 rotates. The nut 21 screwed into the threaded portion of the feed screw 14 and the housing 13 fixed to the nut 21 are designed to fit into a key 22 fixed to the nut 21 and a key groove 23 provided on the wall of the feed device. Since the nut 21 and the housing 13 are made non-rotatable, the nut 21 and the housing 13 move in the axial direction of the feed screw 14, and the bearings 24, 25 and the receiver 4 are inserted into the cylindrical portion of the housing 13.
The main shaft 8, which is pivotally supported by the main shaft 8, also moves according to the movements of the nut 21 and the housing 13, and as the main shaft 8 moves, the quill 9, which supports the main shaft 8, also moves.
また、NC装置の指令により、シリンダー７を
作動すれば、押棒３１がばね３３に抗して工具着
脱用軸１１を押し、これにより工具着脱用軸１１
の工具保持部が開き、工具Ｅを主軸８から取外す
ことができる。 Further, when the cylinder 7 is actuated by a command from the NC device, the push rod 31 pushes the tool attachment/detachment shaft 11 against the spring 33, thereby causing the tool attachment/detachment shaft 11 to move.
The tool holder opens and the tool E can be removed from the spindle 8.
また、工具保持部を開いた状態で新たな工具Ｅ
を挿入し、シリンダー７を短縮すれば、押棒３１
がばね３５により上動し、工具着脱用軸１１もば
ね１２により上動して工具保持部を自動的に閉じ
る。 Also, with the tool holder open, insert a new tool E.
By inserting the cylinder 7 and shortening the cylinder 7, the push rod 31
is moved upwardly by the spring 35, and the tool attaching/detaching shaft 11 is also moved upwardly by the spring 12 to automatically close the tool holding portion.
〈効果〉
以上の説明から明らかな通り、本発明は、主軸
頭１内に軸方向移動自在に装架された中空のクイ
ル９と、該クイル９内に回転可能に装架された中
空の主軸８を回転駆動する主軸駆動モータ３を有
する主軸駆動装置Ａと、前記主軸８とクイル９を
同時に軸方向に移動させるための送り駆動装置５
と、前記主軸８の頭部の工具を自動的に着脱する
ための工具着脱装置Ｂとを具え、前記送り駆動装
置５には、主軸８に内蔵された中空の送りネジ１
４と、該送りネジ１４を回転するため前記主軸駆
動モータ３とは別に設けられた主軸送りモータ４
と、前記送りネジ１４の回転を主軸８の軸方向移
動に変換する変換装置Ｃと、主軸８の軸方向移動
のみをクイル９に伝える伝動手段Ｄとが有せしめ
られ、前記工具着脱装置Ｂには、送りネジ１４の
内部に軸方向へ移動自在に装架された押棒３１
と、該押棒３１を軸方向へ移動させるためのシリ
ンダー７と、前記押棒の端部に近接して配され前
記主軸８に軸方向へ移動自在に装架された工具着
脱用軸１１とが設けられている。<Effects> As is clear from the above description, the present invention includes a hollow quill 9 mounted in the spindle head 1 so as to be movable in the axial direction, and a hollow main shaft rotatably mounted in the quill 9. a main shaft drive device A having a main shaft drive motor 3 for rotationally driving the main shaft 8; and a feed drive device 5 for simultaneously moving the main shaft 8 and the quill 9 in the axial direction.
and a tool attaching/detaching device B for automatically attaching and detaching the tool on the head of the main spindle 8, and the feed drive device 5 includes a hollow feed screw 1 built into the main spindle 8
4, and a main shaft feed motor 4 provided separately from the main shaft drive motor 3 to rotate the feed screw 14.
, a conversion device C that converts the rotation of the feed screw 14 into axial movement of the main shaft 8, and a transmission means D that transmits only the axial movement of the main shaft 8 to the quill 9. is a push rod 31 mounted inside the feed screw 14 so as to be movable in the axial direction.
, a cylinder 7 for moving the push rod 31 in the axial direction, and a tool attachment/detachment shaft 11 disposed close to the end of the push rod and mounted on the main shaft 8 so as to be movable in the axial direction. It is being
したがつて、本発明によると、主軸、クイルの
中心と送りネジの中心を一致させることが可能と
なり、これによりクイル送りの真直性を損う基本
的な要因を除去できるという優れた効果がある。 Therefore, according to the present invention, it is possible to align the centers of the main shaft and quill with the center of the feed screw, which has the excellent effect of eliminating the fundamental factor that impairs the straightness of quill feed. .
また、送りネジを中空にして、その内部で押棒
を軸方向へ移動可能とし、押棒をシリンダーによ
つて移動させるよう構成したから、主軸、クイル
の中心と送りネジの中心を一致させる構成にした
にも拘らず、工具を自動的に着脱することがで
き、数直制御による加工も行ない得、かつ装置の
コンパクト化も実現できるといつた優れた効果が
ある。 In addition, the feed screw is made hollow so that the push rod can be moved in the axial direction inside it, and the push rod is moved by a cylinder, so the center of the main shaft and quill is aligned with the center of the feed screw. Nevertheless, it has excellent effects such as being able to automatically attach and detach tools, perform machining by multiple-shift control, and make the device more compact.
第１図は従来装置の縦断面図、第２図は本発明
実施例の縦断面図、第３図は同側面図、第４図は
同要部の縦断面図、第５図は同一部の拡大縦断面
図である。
１：主軸頭、２：主軸駆動ギヤケース、３：主
軸駆動モータ、４：主軸送りモータ、５：送り駆
動装置、６：主軸送りギヤケース、７：シリンダ
ー、８：主軸、９：クイル、１１：工具着脱用
軸、１４：送りネジ、３１：押棒、Ａ：主軸駆動
装置、Ｂ：工具着脱装置、Ｃ：変換装置、Ｄ：伝
動手段。
Fig. 1 is a longitudinal sectional view of the conventional device, Fig. 2 is a longitudinal sectional view of the embodiment of the present invention, Fig. 3 is a side view of the same, Fig. 4 is a longitudinal sectional view of the same main part, and Fig. 5 is a longitudinal sectional view of the same part. FIG. 1: Spindle head, 2: Spindle drive gear case, 3: Spindle drive motor, 4: Spindle feed motor, 5: Feed drive device, 6: Spindle feed gear case, 7: Cylinder, 8: Spindle, 9: Quill, 11: Tool Attachment/detachment shaft, 14: Feed screw, 31: Push rod, A: Main shaft drive device, B: Tool attachment/detachment device, C: Conversion device, D: Transmission means.
Claims (1)
空のクイル９と、該クイル９内に回転可能に装架
された中空の主軸８を回転駆動する主軸駆動モー
タ３を有する主軸駆動装置Ａと、前記主軸８とク
イル９を同時に軸方向に移動させるための送り駆
動装置５と、前記主軸８の頭部の工具を自動的に
着脱するための工具着脱装置Ｂとを具え、前記送
り駆動装置５には、主軸８に内蔵された中空の送
りネジ１４と、該送りネジ１４を回転するため前
記主軸駆動モータ３とは別に設けられた主軸送り
モータ４と、前記送りネジ１４の回転を主軸８の
軸方向移動に変換する変換装置Ｃと、主軸８の軸
方向移動のみをクイル９に伝える伝動手段Ｄとが
有せしめられ、前記工具着脱装置Ｂには、送りネ
ジ１４の内部に軸方向へ移動自在に装架された押
棒３１と、該押棒３１を軸方向へ移動させるため
のシリンダー７と、前記押棒の端部に近接して配
され前記主軸８に軸方向へ移動自在に装架された
工具着脱用軸１１とが設けられていることを特徴
とする主軸制御装置。1 A spindle drive device having a hollow quill 9 mounted in a spindle head 1 so as to be freely movable in the axial direction, and a spindle drive motor 3 that rotationally drives a hollow main shaft 8 rotatably mounted in the quill 9. A, a feed drive device 5 for simultaneously moving the main spindle 8 and the quill 9 in the axial direction, and a tool attaching/detaching device B for automatically attaching and detaching a tool on the head of the main spindle 8, The drive device 5 includes a hollow feed screw 14 built into the main shaft 8, a main shaft feed motor 4 provided separately from the main shaft drive motor 3 for rotating the feed screw 14, and a main shaft feed motor 4 that rotates the feed screw 14. A conversion device C that converts the movement into an axial movement of the main shaft 8, and a transmission means D that transmits only the axial movement of the main shaft 8 to the quill 9. A push rod 31 mounted so as to be movable in the axial direction; a cylinder 7 for moving the push rod 31 in the axial direction; A spindle control device characterized in that it is provided with a mounted tool attachment/detachment axis 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7538583A JPS59201737A (en) | 1983-04-27 | 1983-04-27 | Spindle control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7538583A JPS59201737A (en) | 1983-04-27 | 1983-04-27 | Spindle control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59201737A JPS59201737A (en) | 1984-11-15 |
| JPH0112619B2 true JPH0112619B2 (en) | 1989-03-01 |
Family
ID=13574671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7538583A Granted JPS59201737A (en) | 1983-04-27 | 1983-04-27 | Spindle control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59201737A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS644534U (en) * | 1987-06-26 | 1989-01-12 | ||
| CN102922396A (en) * | 2012-11-29 | 2013-02-13 | 无锡富岛精工有限公司 | Telescopic bracket |
| FR3105752B1 (en) * | 2019-12-31 | 2021-12-31 | Centre Techn Ind Mecanique | Electro-spindle with integrated feed with automatic tool holder change |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53130588A (en) * | 1978-04-17 | 1978-11-14 | Genyuu Kitaguchi | Drill unit |
| JPS57105111U (en) * | 1980-12-18 | 1982-06-29 | ||
| JPS5856745A (en) * | 1981-09-29 | 1983-04-04 | Riken Seiki Kk | Tool holder in automatic tool interchanging device |
-
1983
- 1983-04-27 JP JP7538583A patent/JPS59201737A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59201737A (en) | 1984-11-15 |
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