JP2005028557A - Tailstock - Google Patents

Tailstock Download PDF

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Publication number
JP2005028557A
JP2005028557A JP2003273662A JP2003273662A JP2005028557A JP 2005028557 A JP2005028557 A JP 2005028557A JP 2003273662 A JP2003273662 A JP 2003273662A JP 2003273662 A JP2003273662 A JP 2003273662A JP 2005028557 A JP2005028557 A JP 2005028557A
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Prior art keywords
center
handle
screw shaft
cam
tailstock
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JP2003273662A
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JP3704135B2 (en
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Yasuyuki Kawada
泰幸 川田
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KAWADA TEKKO KK
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KAWADA TEKKO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tailstock constituted to axially move a center 1 with a large stroke. <P>SOLUTION: A screw shaft 2 is disposed below the center 1. The screw shaft 2 extends parallelly to the center 1. When a handle 4 is assembled with the screw shaft 2, and engaged with the center 1 to rotate the handle 4, the handle 4 is fed with the screw shaft 2 to enable the axial movement of the center 1. The handle 4 is separated from the center 1 by lowering the screw shaft 2 and the handle 4 with a separation means 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、旋盤、フライス盤などの工作機械の心押台に関するものである。   The present invention relates to a tailstock for machine tools such as lathes and milling machines.

工作機械の心押台としてねじ軸を有するものが使用されている。実開昭54−26790号公報(特許文献1)に記載されているものがそれである。同公報の心押台では、センタが本体に支持され、ねじ軸はセンタの下方に配置され、センタに平行にのび、本体に支持される。さらに、ハンドルがねじ軸と組み合わされ、センタに係合し、ハンドルを回転操作すると、ねじ軸によってハンドルをねじ送りし、センタを軸方向移動させることができ、センタをワークに押し付けることができる。   A machine tool tailstock having a screw shaft is used. This is described in Japanese Utility Model Laid-Open No. 54-26790 (Patent Document 1). In the tailstock of the publication, the center is supported by the main body, the screw shaft is disposed below the center, extends parallel to the center, and is supported by the main body. Further, when the handle is combined with the screw shaft, engaged with the center, and rotated, the handle can be screwed by the screw shaft, the center can be moved in the axial direction, and the center can be pressed against the workpiece.

ところで、この心押台のセンタを軸方向移動させるとき、そのストロークはハンドルのねじ送り長さに制限され、それよりも大きいストロークをもってセンタを軸方向移動させることはできない。一方、たとえば、ワークの端面に孔が形成されているとき、その孔内において、センタをワークに押し付けることが要求される。孔の深さがセンタのストロークよりも大きいことも少なくない。この場合、ねじ軸によってハンドルをねじ送りし、センタを軸方向移動させても、センタを孔に挿入し、ワークに押し付けることはできない。センタを孔に挿入し、ワークに押し付けるには、心押台全体を軸方向移動させる必要がある。センタを孔から抜き出し、ワークから分離させることも同様であり、心押台全体を軸方向移動させねばならず、作業性が悪く、その改善が強く要望されている。
実開昭54−26790号公報
By the way, when the center of the tailstock is moved in the axial direction, the stroke is limited by the screw feed length of the handle, and the center cannot be moved in the axial direction with a stroke larger than that. On the other hand, for example, when a hole is formed in the end face of the workpiece, it is required to press the center against the workpiece in the hole. Often, the hole depth is greater than the center stroke. In this case, even if the handle is screwed by the screw shaft and the center is moved in the axial direction, the center cannot be inserted into the hole and pressed against the workpiece. In order to insert the center into the hole and press it against the workpiece, it is necessary to move the entire tailstock in the axial direction. Similarly, the center is extracted from the hole and separated from the work, and the entire tailstock must be moved in the axial direction, so that the workability is poor and the improvement is strongly demanded.
Japanese Utility Model Publication No. 54-26790

したがって、この発明は、特別の構成の心押台を新たに提供し、大きいストロークをもってセンタを軸方向移動させることを目的としてなされたものである。   Therefore, the present invention has been made for the purpose of newly providing a tailstock having a special configuration and moving the center in the axial direction with a large stroke.

この発明によれば、ねじ軸がセンタの下方に配置される。ねじ軸はセンタに平行にのびる。さらに、ハンドルがねじ軸と組み合わされ、センタに係合し、ハンドルを回転させると、ねじ軸によってハンドルをねじ送りし、センタを軸方向移動させることができる。さらに、離脱手段によってねじ軸およびハンドルを下降させ、ハンドルをセンタから離脱させることができる。   According to this invention, the screw shaft is disposed below the center. The screw shaft extends parallel to the center. Further, when the handle is combined with the screw shaft, engaged with the center, and rotated, the handle can be screwed by the screw shaft and the center can be moved in the axial direction. Further, the screw shaft and the handle can be lowered by the detaching means, and the handle can be detached from the center.

好ましい実施例では、センタは本体に支持される。離脱手段は支軸からなり、本体に設けられ、ねじ軸は支軸に支持される。そして、ねじ軸およびハンドルを支軸のまわりに揺動させ、下降させ、ハンドルをセンタから離脱させることができる。   In the preferred embodiment, the center is supported on the body. The detaching means includes a support shaft, is provided on the main body, and the screw shaft is supported by the support shaft. Then, the screw shaft and the handle can be swung around the support shaft, lowered, and the handle can be detached from the center.

さらに、好ましい実施例では、カムがねじ軸の下方に配置され、本体に支持され、ハンドルがセンタに係合しているとき、ねじ軸はカムに支持される。したがって、ハンドルをセンタから離脱させるとき、カムによってねじ軸を下降させることができる。   Further, in the preferred embodiment, the camshaft is supported by the cam when the cam is disposed below the screw shaft and supported by the body and the handle is engaged with the center. Therefore, when the handle is detached from the center, the screw shaft can be lowered by the cam.

さらに、好ましい実施例では、レバーがカムに設けられ、レバーによってカムを回転させることができる。そして、ハンドルとセンタの離脱後、ねじ軸を再度上昇させ、ハンドルをセンタに係合させたとき、レバーの自重またはスプリングがカムに作用し、カムが自動的に回転し、ねじ軸がカムに支持される。   Furthermore, in a preferred embodiment, a lever is provided on the cam, and the cam can be rotated by the lever. After the handle and center are separated, when the screw shaft is raised again and the handle is engaged with the center, the lever's own weight or spring acts on the cam, the cam automatically rotates, and the screw shaft moves to the cam. Supported.

以下、この発明の実施例を説明する。   Examples of the present invention will be described below.

図1はこの発明にかかる心押台を示す。この心押台はセンタ1およびねじ軸2を有し、センタ1は本体3に支持され、軸方向移動可能に案内されている。ねじ軸2はセンタ1の下方に配置されており、センタ1に平行にのびる。さらに、ハンドル4がねじ軸2と組み合わされ、センタ1に係合する。この実施例では、ハンドル4はナット状のもので、ねじ軸2にねじ合わされている。さらに、ハンドル4にフランジ5が形成され、センタ1に外周みぞ6が形成され、フランジ5が外周みぞ6に挿入されており、フランジ5および外周みぞ6によってハンドル4とセンタ1が係合する。   FIG. 1 shows a tailstock according to the present invention. The tailstock has a center 1 and a screw shaft 2, and the center 1 is supported by a main body 3 and guided so as to be movable in the axial direction. The screw shaft 2 is disposed below the center 1 and extends parallel to the center 1. Further, the handle 4 is combined with the screw shaft 2 and engaged with the center 1. In this embodiment, the handle 4 has a nut shape and is screwed onto the screw shaft 2. Further, a flange 5 is formed on the handle 4, an outer peripheral groove 6 is formed on the center 1, and the flange 5 is inserted into the outer peripheral groove 6, and the handle 4 and the center 1 are engaged by the flange 5 and the outer peripheral groove 6.

したがって、ハンドル4を回転させると、ねじ軸2によってハンドル4をねじ送りし、センタ1を軸方向移動させることができ、図2に示すように、センタ1をワーク7に押し付けることができる。たとえば、ワーク7の端面に孔8が形成されており、孔8内において、センタ1がワーク7に押し付けられる。   Therefore, when the handle 4 is rotated, the handle 4 is screwed by the screw shaft 2 and the center 1 can be moved in the axial direction, and the center 1 can be pressed against the work 7 as shown in FIG. For example, a hole 8 is formed in the end surface of the work 7, and the center 1 is pressed against the work 7 in the hole 8.

さらに、離脱手段によってねじ軸2およびハンドル4を下降させ、ハンドル4をセンタ1から離脱させることができる。この実施例では、センタ1は本体3に支持されていることは前述したとおりであるが、離脱手段は支軸9からなり、本体3に設けられており、ねじ軸2は支軸9に支持されている。そして、図4に示すように、ねじ軸2およびハンドル4を支軸9のまわりに揺動させ、下降させることができる。したがって、フランジ5が外周みぞ6から抜き取られ、ハンドル4がセンタ1から離脱される。   Furthermore, the screw shaft 2 and the handle 4 can be lowered by the detaching means, and the handle 4 can be detached from the center 1. In this embodiment, the center 1 is supported by the main body 3 as described above, but the detaching means comprises the support shaft 9 and is provided on the main body 3, and the screw shaft 2 is supported by the support shaft 9. Has been. As shown in FIG. 4, the screw shaft 2 and the handle 4 can be swung around the support shaft 9 and lowered. Therefore, the flange 5 is extracted from the outer peripheral groove 6 and the handle 4 is detached from the center 1.

さらに、この心押台では、カム10がねじ軸2の下方に配置され、本体3に支持されており、ハンドル4がセンタ1に係合しているとき、図3に示すように、ねじ軸2はカム10に支持される。カム10はカムみぞ11を有する。さらに、レバー12がカム10に設けられており、レバー12によってカム10を回転させることができる。そして、カム10を図1の反時計方向に回転させると、ねじ軸2がカムみぞ11に挿入され、支軸9のまわりを揺動し、下降する。   Further, in this tailstock, when the cam 10 is disposed below the screw shaft 2 and supported by the main body 3 and the handle 4 is engaged with the center 1, as shown in FIG. 2 is supported by the cam 10. The cam 10 has a cam groove 11. Further, a lever 12 is provided on the cam 10, and the cam 10 can be rotated by the lever 12. When the cam 10 is rotated counterclockwise in FIG. 1, the screw shaft 2 is inserted into the cam groove 11, swings around the support shaft 9, and descends.

したがって、ハンドル4をセンタ1から離脱させるとき、カム10によってねじ軸2を下降させることができるものである。その後、ねじ軸2およびハンドル4を支軸9のまわりに揺動させ、再度上昇させると、フランジ5が外周みぞ6に挿入され、ハンドル4がセンタ1に係合する。さらに、ハンドル4とセンタ1の離脱後、ねじ軸2を再度上昇させ、ハンドル4をセンタ1に係合させたとき、レバー12の自重がカム10に作用し、カム10が自動的に回転し、図1の位置に復帰する。したがって、その後、ねじ軸2およびハンドル4を解放すると、ねじ軸2がカム10に支持され、ハンドル4とセンタ1が係合した状態に保たれる。スプリングをカム10に作用させ、カム10が自動的に回転するようにしてもよい。   Therefore, when the handle 4 is detached from the center 1, the screw shaft 2 can be lowered by the cam 10. Thereafter, when the screw shaft 2 and the handle 4 are swung around the support shaft 9 and raised again, the flange 5 is inserted into the outer peripheral groove 6 and the handle 4 is engaged with the center 1. Further, after the handle 4 and the center 1 are separated, when the screw shaft 2 is raised again and the handle 4 is engaged with the center 1, the weight of the lever 12 acts on the cam 10, and the cam 10 automatically rotates. Return to the position of FIG. Therefore, after that, when the screw shaft 2 and the handle 4 are released, the screw shaft 2 is supported by the cam 10 and the handle 4 and the center 1 are kept engaged. A spring may be applied to the cam 10 so that the cam 10 automatically rotates.

したがって、この心押台において、ねじ軸2によってハンドル4をねじ送りし、センタ1を軸方向移動させるとき、そのストロークSはハンドル4のねじ送り長さに制限されるが、ワーク7の端面に孔8が形成され、その深さDがセンタ1のストロークSよりも大きくても、問題はない。カム10によってねじ軸2を下降させ、ハンドル4をセンタ1から離脱させると、ハンドル4のねじ送り長さに関係なく、任意にセンタ1を軸方向移動させることができ、大きいストロークをもってセンタ1を軸方向移動させることができる。   Therefore, in this tailstock, when the handle 4 is screw-fed by the screw shaft 2 and the center 1 is moved in the axial direction, the stroke S is limited to the screw feed length of the handle 4, but the end surface of the work 7 There is no problem even if the hole 8 is formed and its depth D is larger than the stroke S of the center 1. When the screw shaft 2 is lowered by the cam 10 and the handle 4 is detached from the center 1, the center 1 can be arbitrarily moved in the axial direction regardless of the screw feed length of the handle 4, and the center 1 can be moved with a large stroke. It can be moved in the axial direction.

したがって、ハンドル4とセンタ1の離脱後、センタ1を一旦軸方向移動させ、図1の位置から後退させ、ワーク7を図1の位置に配置することができる。その後、センタ1をワーク7に向かって前進させ、孔8内に挿入することができる。   Therefore, after the handle 4 and the center 1 are detached, the center 1 can be moved once in the axial direction, retreated from the position shown in FIG. 1, and the work 7 can be arranged at the position shown in FIG. Thereafter, the center 1 can be advanced toward the workpiece 7 and inserted into the hole 8.

その後、ねじ軸2を再度上昇させ、ハンドル4をセンタ1に係合させることができ、ねじ軸2をカム10に支持することができる。したがって、その後、ハンドル4を回転させると、ねじ軸2によってハンドル4をねじ送りし、センタ1を軸方向移動させ、センタ1をワーク7に押し付けることができる。   Thereafter, the screw shaft 2 is raised again, the handle 4 can be engaged with the center 1, and the screw shaft 2 can be supported by the cam 10. Therefore, when the handle 4 is rotated thereafter, the handle 4 is screwed by the screw shaft 2, the center 1 is moved in the axial direction, and the center 1 can be pressed against the work 7.

センタ1を孔8から抜き出し、ワーク7から分離させることも同様である。カム10によってねじ軸2を下降させ、ハンドル4をセンタ1から離脱させると、大きいストロークをもってセンタ1を軸方向移動させることができ、センタ1を孔8から抜き出し、ワーク7から分離させることができる。   Similarly, the center 1 can be extracted from the hole 8 and separated from the workpiece 7. When the screw shaft 2 is lowered by the cam 10 and the handle 4 is detached from the center 1, the center 1 can be moved in the axial direction with a large stroke, and the center 1 can be extracted from the hole 8 and separated from the workpiece 7. .

したがって、この心押台の場合、大きいストロークをもってセンタ1を軸方向移動させることができ、前記従来のように、心押台全体を軸方向移動させる必要はなく、作業性が高く、所期の目的を達成することができるものである。   Therefore, in the case of this tailstock, the center 1 can be moved in the axial direction with a large stroke, and it is not necessary to move the whole tailstock in the axial direction as in the prior art, and the workability is high, The objective can be achieved.

この発明の実施例を示す側面図である。It is a side view which shows the Example of this invention. 図1のセンタがワークに押し付けられた状態を示す側面図である。FIG. 2 is a side view showing a state where the center of FIG. 1 is pressed against a workpiece. 図1のねじ軸とカムの関係を示す断面図である。It is sectional drawing which shows the relationship between the screw shaft of FIG. 1, and a cam. 図1のハンドルをセンタから分離させた状態を示す側面図である。It is a side view which shows the state which isolate | separated the handle | steering-wheel of FIG. 1 from the center.

符号の説明Explanation of symbols

1 センタ
2 ねじ軸
3 本体
4 ハンドル
9 支軸
10 カム
12 レバー
1 Center 2 Screw shaft 3 Body 4 Handle 9 Support shaft 10 Cam 12 Lever

Claims (4)

センタと、
前記センタの下方に配置され、前記センタに平行にのびるねじ軸と、
前記ねじ軸と組み合わされ、前記センタに係合するハンドルとを備え、前記ハンドルを回転させ、前記ねじ軸によって前記ハンドルをねじ送りし、前記センタを軸方向移動させることができ、さらに、
前記ねじ軸およびハンドルを下降させ、前記ハンドルを前記センタから離脱させる離脱手段を備えたことを特徴とする心押台。
The center,
A screw shaft disposed below the center and extending parallel to the center;
A handle that is combined with the screw shaft and engages the center, the handle is rotated, the handle is screwed by the screw shaft, and the center can be moved in the axial direction.
A tailstock comprising lowering means for lowering the screw shaft and the handle and detaching the handle from the center.
前記センタは本体に支持され、前記離脱手段は支軸からなり、前記本体に設けられ、前記ねじ軸は前記支軸に支持されており、前記ねじ軸およびハンドルを前記支軸のまわりに揺動させ、下降させ、前記ハンドルを前記センタから離脱させるようにしたことを特徴とする請求項1に記載の心押台。   The center is supported by a main body, the detaching means is a support shaft, and is provided on the main body. The screw shaft is supported by the support shaft, and the screw shaft and the handle are swung around the support shaft. 2. The tailstock according to claim 1, wherein the tailstock is lowered and lowered to disengage the handle from the center. さらに、カムが前記ねじ軸の下方に配置され、前記本体に支持されており、前記ハンドルが前記センタに係合しているとき、前記ねじ軸は前記カムに支持され、前記ハンドルを前記センタから離脱させるとき、前記カムによって前記ねじ軸を下降させるようにしたことを特徴とする請求項2に記載の心押台。   Furthermore, when the cam is disposed below the screw shaft and supported by the main body, and the handle is engaged with the center, the screw shaft is supported by the cam, and the handle is moved away from the center. 3. The tailstock according to claim 2, wherein when the screw is separated, the screw shaft is lowered by the cam. さらに、レバーが前記カムに設けられており、前記レバーによって前記カムを回転させることができ、前記ハンドルとセンタの離脱後、前記ねじ軸を再度上昇させ、前記ハンドルを前記センタに係合させたとき、前記レバーの自重またはスプリングが前記カムに作用し、前記カムが自動的に回転し、前記ねじ軸が前記カムに支持されるようにしたことを特徴とする請求項3に記載の心押台。   Further, a lever is provided on the cam, and the cam can be rotated by the lever. After the handle and the center are detached, the screw shaft is raised again, and the handle is engaged with the center. 4. The tailstock according to claim 3, wherein the weight of the lever or a spring acts on the cam, the cam rotates automatically, and the screw shaft is supported by the cam. Stand.
JP2003273662A 2003-07-11 2003-07-11 Tailstock Expired - Lifetime JP3704135B2 (en)

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Application Number Priority Date Filing Date Title
JP2003273662A JP3704135B2 (en) 2003-07-11 2003-07-11 Tailstock

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JP3704135B2 JP3704135B2 (en) 2005-10-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113059202A (en) * 2021-03-30 2021-07-02 台州北平机床有限公司 Center assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113059202A (en) * 2021-03-30 2021-07-02 台州北平机床有限公司 Center assembly
CN113059202B (en) * 2021-03-30 2022-06-10 北平机床(浙江)股份有限公司 Center assembly

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