JP5472719B2

JP5472719B2 - Clamping device

Info

Publication number: JP5472719B2
Application number: JP2009273555A
Authority: JP
Inventors: 春機溝口
Original assignee: MST Corp
Current assignee: MST Corp
Priority date: 2009-12-01
Filing date: 2009-12-01
Publication date: 2014-04-16
Anticipated expiration: 2029-12-01
Also published as: JP2011115869A

Description

この発明は、ワークをチャッキングするワークパレットと、このワークパレットをクランプするクランプユニットから構成されるクランプ装置に関する。 The present invention relates to a clamping device including a workpiece pallet that chucks a workpiece and a clamping unit that clamps the workpiece pallet.

５軸制御の加工機等に用いられるクランプ装置は、ワークをチャッキングするワークパレットと、このワークパレットを前記加工機等のテーブルにクランプするクランプユニットから構成される。このクランプ装置は、ワークの高い加工精度を確保するために、ワークパレットで確実にこのワークをチャッキングするとともに、加工中にワークのがたつきが生じないように、ワークパレットをクランプユニットに確実にクランプすることが望まれている。 A clamping device used in a 5-axis control processing machine or the like includes a work pallet that chucks a work and a clamp unit that clamps the work pallet on a table such as the processing machine. In order to ensure high machining accuracy of the workpiece, this clamping device securely chucks the workpiece with the workpiece pallet and ensures that the workpiece pallet is secured to the clamping unit so that the workpiece does not rattle during machining. It is desirable to clamp to.

例えば、特許文献１に示すクランプ装置は、第１ブロック（本願発明の構成におけるクランプユニットに相当）に第２ブロック（同じくワークパレットに相当）を着脱自在に固定するようにしたものであって、第１ブロックに第１継手を設けて、この第１継手に伝動部材、中間部材、ボール形状の係合具等を配設する一方で、第２ブロックに第２継手を設けて、この第２継手に被係止部を形成してこの被係止部で前記係合具を係止するようにしている。また、両継手の嵌合面に圧縮空気を流動させて、その嵌合面のクリーニング作用をもたせ、この嵌合面に異物が挟まるのを防止している。この構成によると、装置を小型化することができ、かつ、ワークの位置決めを精密に行うことができる（同文献明細書段落０００６〜０００７を参照）。 For example, a clamp device shown in Patent Document 1 is configured to detachably fix a second block (also corresponding to a work pallet) to a first block (corresponding to a clamp unit in the configuration of the present invention), A first joint is provided in the first block, and a transmission member, an intermediate member, a ball-shaped engagement tool and the like are provided in the first joint, while a second joint is provided in the second block. A locked portion is formed in the joint, and the engaging tool is locked by the locked portion. In addition, compressed air is caused to flow on the fitting surfaces of both joints to provide a cleaning action for the fitting surfaces, thereby preventing foreign matter from being caught on the fitting surfaces. According to this configuration, the apparatus can be miniaturized and the workpiece can be accurately positioned (see paragraphs 0006 to 0007 of the same document).

しかしながら、特に５軸制御のマシニングセンタ等の加工機においては、図１２にその一例を模式的に示すように、加工ツール３６側でＸ、Ｙ、Ｚ軸方向の３軸制御がなされる一方で、ワークＷを載置したステージ２側で前記Ｘ軸周り（回転Ａ軸）及びＺ軸周り（回転Ｃ軸）の回転制御がなされ、合計５軸（直線３軸＋回転２軸）の制御がなされるようになっている。すなわち、ステージ２上に設置したワークＷの多少の位置ずれは、前記５軸制御により十分補正できるにもかかわらず、この精密な位置決め性を追求するあまり、装置構成が過度に複雑になってしまっているという問題がある。 However, particularly in a processing machine such as a 5-axis control machining center, as shown schematically in FIG. 12, an example is schematically shown in which three-axis control in the X, Y, and Z-axis directions is performed on the processing tool 36 side. Rotation control around the X axis (rotation A axis) and Z axis (rotation C axis) is performed on the stage 2 side on which the workpiece W is placed, and a total of 5 axes (linear 3 axes + rotation 2 axes) is controlled. It has become so. That is, although a slight positional deviation of the workpiece W placed on the stage 2 can be sufficiently corrected by the 5-axis control, the apparatus configuration becomes excessively complicated due to the pursuit of this precise positioning. There is a problem that.

そこで、この装置構成をよりシンプルにしたものとして、特許文献２に示す締結装置が挙げられる。この締結装置は、締結ピンを締結ブッシュに挿し込むことにより二つの部材を締結するものであって、前記締結ピンに設けられたスチールボールを介して、この締結ピン及び締結ブッシュに形成したテーパ面を係合させて両部材の締結を図っている。この装置構成における部品数は、特許文献１に示す構成と比較して大幅に少なく、シンプルなものとなっている。 Therefore, a fastening device shown in Patent Document 2 is given as a simpler device configuration. This fastening device fastens two members by inserting a fastening pin into a fastening bush, and a taper surface formed on the fastening pin and the fastening bush via a steel ball provided on the fastening pin. Are engaged to fasten both members. The number of parts in this apparatus configuration is much smaller than that shown in Patent Document 1 and is simple.

特開２００３−３００１２４号公報JP 2003-300124 A 特開２００９−１１５１６６号公報JP 2009-115166 A

前記特許文献２に示す構成においては、前記締結ピン及び締結ブッシュに形成したテーパ面とスチールボールとが点接触状態なので、その締結状態が安定せずワークの加工中にがたつきが生じる恐れがある。上述した５軸制御の加工機はワークのチャッキングの位置ずれは各軸の制御でもって補正できるものの、加工中のがたつきまでは補正できない。このため、このがたつきによって、ワークの十分な加工精度を得ることができないという問題を生じ得る。 In the configuration shown in Patent Document 2, since the tapered surface formed on the fastening pin and the fastening bush and the steel ball are in a point contact state, the fastening state is not stable, and there is a risk that rattling occurs during processing of the workpiece. is there. The above-mentioned 5-axis control processing machine can correct the workpiece chucking misalignment by controlling each axis, but cannot correct it until rattling during processing. For this reason, this rattling may cause a problem that sufficient machining accuracy of the workpiece cannot be obtained.

そこで、この発明は、ワークをチャッキングするワークパレットと、加工機のテーブルに固定されたクランプユニットとを、簡単な構成でかつ確実に固定することを課題とする。 Accordingly, an object of the present invention is to securely fix a work pallet for chucking a work and a clamp unit fixed to a table of a processing machine with a simple configuration.

前記課題を解決するため、この発明は、ワークをチャッキングするワークパレットと、このワークパレットをテーブル上に固定するクランプユニットから構成されるクランプ装置において、前記ワークパレットが筒状の挿し部を備え、この挿し部の筒内面の奥側に、前記筒内面の手前側の挿し部端部の内径よりも大きな内径を有する段差部を形成して、この段差部と前記挿し部端部の内面とをつなぐテーパ面を形成する一方で、前記クランプユニットが前記挿し部の内面側にぴったりと挿し込まれる受け部を備え、この受け部に、前記挿し部内面側に向けて、受け部の周面から突出、及び、前記受け部内に収納自在な突部を形成したレバー部材を設けるとともに、前記レバー部材に、このレバー部材を前記受け部の軸心側に付勢する付勢部材を設け、このレバー部材の前記受け部軸心側に、カムを前記レバー部材とこのカムのカム面とが当接するように設け、このカムのカム軸周りの回転に伴って、前記突部が前記付勢部材の付勢力に抗して、前記受け部の外周面から外向きに突出するようにし、前記突部の受け部奥側にその奥側ほど軸心側に向かって傾斜するテーパ面を形成し、前記挿し部を受け部に挿し込んで前記突部を突出させ、前記段差部に形成したテーパ面と、前記突部に形成したテーパ面とを当接させて、この当接力でもって前記クランプユニットによる前記ワークパレットのクランプをなすようにする一方で、前記突部を収納し、前記両テーパ面の当接を解除して前記受け部へ挿し部を自在に抜き差しし得るようにした構成を採用した。 In order to solve the above-described problems, the present invention provides a clamp apparatus including a work pallet for chucking a work and a clamp unit for fixing the work pallet on a table. The work pallet includes a cylindrical insertion portion. A step portion having an inner diameter larger than the inner diameter of the insertion portion end portion on the near side of the cylindrical inner surface is formed on the inner side of the inner surface of the insertion portion, and the step portion and the inner surface of the insertion portion end portion are formed. The clamp unit is provided with a receiving portion that is exactly inserted into the inner surface side of the insertion portion, and the receiving portion has a circumferential surface of the receiving portion toward the inner surface side of the insertion portion. And a biasing member that urges the lever member toward the axial center of the receiving portion. A cam is provided on the lever shaft side of the lever member so that the lever member and the cam surface of the cam are in contact with each other. A taper surface that protrudes outward from the outer peripheral surface of the receiving portion against the urging force of the urging member, and is inclined toward the axial center toward the back side of the receiving portion of the protruding portion. Forming the insertion part into the receiving part and projecting the protrusion, and contacting the taper surface formed on the step part and the taper surface formed on the protrusion with this contact force While clamping the work pallet by the clamp unit, the projecting portion is housed, the contact of the both tapered surfaces is released, and the insertion portion can be freely inserted and removed from the receiving portion. Adopted the configuration.

前記段差部と突部とはテーパ面による面接触状態となるため、前記特許文献２に示したように両者がスチールボールを介して点接触状態となっている場合と比較して、そのクランプ状態をより確実なものとすることができる。すなわち、加工中のワークのがたつきを防止することができ、このワークの高い加工精度を確保することができる。 Since the stepped portion and the projecting portion are in a surface contact state by a tapered surface, as shown in Patent Document 2, the clamped state is compared to the case where both are in a point contact state via a steel ball. Can be made more reliable. That is, it is possible to prevent rattling of the workpiece during machining, and it is possible to ensure high machining accuracy of the workpiece.

この突部を複数備えるクランプユニットにあっては、その突部は前記受け部の軸心周りに、均等間隔をもって配置されるのが一般的である。この場合、この突部に当接するカムのカム面をその回転軸周りに回転対称（突部が２個の場合は１８０度回転対称、突部が３個の場合は１２０度回転対称、等）に形成しておくと、全ての突部が同期するように、前記突出及び収納することができる。このため、複数の突部によってワークパレットの挿し部が均等にクランプされて、ワークのチャッキング状態を一層安定したものとし得る。 In a clamp unit including a plurality of protrusions, the protrusions are generally arranged at equal intervals around the axis of the receiving portion. In this case, the cam surface of the cam abutting against the protrusion is rotationally symmetric about the rotation axis (180 degrees rotational symmetry when there are two protrusions, 120 degrees rotational symmetry when there are three protrusions, etc.) If formed in this manner, the protrusion and the storage can be performed so that all the protrusions are synchronized. For this reason, the insertion part of a work pallet can be clamped equally by a plurality of projections, and the chucking state of the work can be made more stable.

また、前記構成においては、前記カムのカム軸を、前記受け部の軸心を通り、かつこの軸心方向と垂直となるように構成するのが好ましい。 Moreover, in the said structure, it is preferable to comprise the cam shaft of the said cam so that it may pass along the axial center of the said receiving part, and may be perpendicular | vertical to this axial center direction.

前記クランプユニットによるワークパレットのクランプは、前記受け部に挿し部を挿し込んだ後に、カムをカム軸周りに回転して行うが、このときワークパレットが邪魔になって、カムの回転に支障が生じることがある。そこで、前記のようにこのカムのカム軸を軸心方向と垂直とすることにより、クランプユニットの側面から前記カムの回転操作を容易に行うことができる。 The work pallet is clamped by the clamp unit by inserting the insertion part into the receiving part and then rotating the cam around the cam shaft. At this time, the work pallet becomes an obstacle, and the rotation of the cam is hindered. May occur. Therefore, by making the cam shaft of the cam perpendicular to the axial direction as described above, the cam can be easily rotated from the side surface of the clamp unit.

また、前記カム軸を備える構成においては、このカム軸に、押し上げカムを前記カムと同軸に設け、前記クランプユニットによる前記ワークパレットのクランプ時には、前記押し上げカムの小径部が前記受け部に当接して、前記クランプユニットの全長が短くなるようにこの受け部がクランプシャフト側に変位する一方で、前記ワークパレットのアンクランプ時には、前記押し上げカムの拡径部が前記受け部に当接して、前記クランプユニットから前記受け部が突出するように変位する構成とするのが好ましい。 In the configuration including the cam shaft, a push-up cam is provided on the cam shaft coaxially with the cam. When the work pallet is clamped by the clamp unit, the small-diameter portion of the push-up cam contacts the receiving portion. While the receiving portion is displaced toward the clamp shaft so that the entire length of the clamp unit is shortened, when the work pallet is unclamped, the enlarged-diameter portion of the push-up cam contacts the receiving portion, It is preferable that the receiving portion is displaced so as to protrude from the clamp unit.

このように、押し上げカムのカム軸周りの回転に対応して、前記受け部が変位し得るようにしておくと、アンクランプ時にこの受け部が、ワークパレットを取り外す方向にわずかに押し出す。このため、ワークの加工中にクランプユニットとワークパレットが強固に嵌合した状態となった場合でも、前記押し出しによりその嵌合が解除され、アンクランプ時におけるワークパレットの交換をスムーズに行うことができる。 As described above, if the receiving portion can be displaced corresponding to the rotation of the push-up cam around the cam shaft, the receiving portion slightly pushes out the workpiece pallet in the direction of unclamping. For this reason, even when the clamping unit and the work pallet are firmly fitted during workpiece processing, the fitting is released by the extrusion, and the workpiece pallet can be replaced smoothly during unclamping. it can.

また、前記構成においては、前記クランプユニットによる前記ワークパレットのクランプ及びアンクランプを、前記受け部への作動流体の供給及び遮断に伴う作動流体圧力の変化、又は、前記作動流体の流路の切り替えによってなすようにすることもできる。 In the above configuration, the clamping and unclamping of the work pallet by the clamping unit may be performed by changing the working fluid pressure associated with the supply and blocking of the working fluid to the receiving portion, or by switching the flow path of the working fluid. You can also make it.

この作動流体としては、クランプ機構を駆動させる程度の駆動力を有する圧力・流量を有するものであれば特に限定されることはなく、例えば、一般的な作業場に配管されている圧縮空気を用いることができる。このように、クランプ機構の作動を手動ではなく作動流体による駆動力で自動的に行うことによって、ワークパレットのクランプ及びアンクランプを自動制御することができる。さらに、このアンクランプ状態において、このワークパレットを、例えばマシニングセンタのワークパレット交換装置で掴んで自動交換するようにすることによって、複数のワークの加工作業を全自動のもとに行うことができる。このため、作業効率を大幅に向上し得る。このクランプ機構は特に限定されず、上述したカム方式の他に、ばね等の弾性部材を備えたピストンに前記作動流体を送り込んで駆動させる方式を採用することもできる。 The working fluid is not particularly limited as long as it has a pressure / flow rate having a driving force enough to drive the clamp mechanism. For example, compressed air piped in a general work place is used. Can do. Thus, the clamping and unclamping of the work pallet can be automatically controlled by automatically performing the operation of the clamping mechanism with the driving force by the working fluid instead of manually. Furthermore, in this unclamped state, the workpiece pallet is grasped by, for example, a workpiece pallet exchanging device of a machining center and automatically exchanged, whereby a plurality of workpieces can be processed fully automatically. For this reason, work efficiency can be improved significantly. The clamping mechanism is not particularly limited, and other than the above-described cam system, a system in which the working fluid is driven and driven to a piston provided with an elastic member such as a spring may be employed.

また、前記各構成においては、前記挿し部の先端に切欠き部を形成する一方で、前記受け部に前記切欠き部が嵌まり込む嵌合部を形成し、前記切欠き部と嵌合部とが嵌合した状態で前記クランプをなすようにすることもできる。 Further, in each of the above configurations, a notch portion is formed at the tip of the insertion portion, while a fitting portion into which the notch portion is fitted is formed in the receiving portion, and the notch portion and the fitting portion are formed. It is also possible to make the clamp in a state where the two are fitted.

このように両者を嵌合させることで、ワークの加工中に、ワークパレットがクランプユニットに対してその軸周りに相対回転できない。このため、このワークのがたつき等も減って、高い加工精度を確保することができる。また、大きさや高さ等の異なる複数の嵌合部を形成するとともに、この嵌合部にそれぞれ嵌る切欠き部を形成しておくと、クランプした際のワークパレットとクランプユニットとの間の相対位置関係を常に同じ状態とすることができる。このため、加工の際の位置決め設定をより簡便に行うことができる。 By fitting the two in this way, the workpiece pallet cannot rotate relative to the clamp unit around its axis during workpiece machining. For this reason, the shakiness etc. of the workpiece is reduced, and high machining accuracy can be ensured. In addition, when a plurality of fitting portions having different sizes and heights are formed, and notches that are respectively fitted to the fitting portions are formed, the relative relationship between the work pallet and the clamp unit when clamped is established. The positional relationship can always be the same. For this reason, the positioning setting at the time of a process can be performed more simply.

さらに、前記各構成においては、前記クランプユニットの受け部を、この受け部の回りを囲むように設けたガイド部よりもこの受け部先端側に突出させてもよい。 Furthermore, in each said structure, you may make the receiving part of the said clamp unit protrude in this receiving part front end side rather than the guide part provided so that the circumference | surroundings of this receiving part might be enclosed.

このクランプユニットでクランプするワークパレットには種々の大きさのワークがチャッキングされ、その中にはクランプユニットの設置面積よりも大きな面積を有するものもある。しかも、５軸制御の加工機においては、そのワークに様々な方向から加工ツールが当接し、クランプ部近傍では加工機のテーブルに対して横向きのモーメントが作用して、加工中にワークのがたつきが生じることがある。そこで、前記受け部をガイド部よりも突出させると、この受け部がワークパレットの挿し部の内面側奥深くに嵌入することとなって、前記がたつきを抑制する作用を発揮する。 The workpiece pallet to be clamped by the clamp unit is chucked with workpieces of various sizes, and some of them have an area larger than the installation area of the clamp unit. Moreover, in a 5-axis control processing machine, the processing tool comes into contact with the workpiece from various directions, and a lateral moment acts on the table of the processing machine in the vicinity of the clamp portion, causing the workpiece to rattle during processing. There may be stickiness. Therefore, when the receiving part is protruded from the guide part, the receiving part is inserted deep into the inner surface side of the insertion part of the work pallet, and the effect of suppressing the rattling is exhibited.

この発明によると、ワークパレットに形成した挿し部のテーパ面と、クランプユニットに形成した受け部のテーパ面とを当接させて、この当接力によりこのワークパレットをクランプするようにした。この当接は面接触によりなされるため、確実な当接力が得られ、ワークの加工の際にこのワークがずれることがなく、高い加工精度を確保することができる。また、前記当接は受け部に形成した突部に当接するカムの回転操作のみによって行うものなので、その操作は非常に簡便である。 According to this invention, the taper surface of the insertion portion formed on the work pallet and the taper surface of the receiving portion formed on the clamp unit are brought into contact with each other, and the work pallet is clamped by the contact force. Since this contact is made by surface contact, a reliable contact force is obtained, and the workpiece is not displaced during the processing of the workpiece, and high processing accuracy can be ensured. Further, since the abutment is performed only by the rotation operation of the cam that abuts the protrusion formed on the receiving portion, the operation is very simple.

本願発明に係るクランプ装置の実施形態を示す側面断面図であって、（ａ）は挿し込み前、（ｂ）は挿し込んでクランプした状態It is side surface sectional drawing which shows embodiment of the clamp apparatus which concerns on this invention, Comprising: (a) is before insertion, (b) is the state clamped by inserting 本願発明に係るクランプ装置の第一の実施形態を示す正面断面図Front sectional view showing a first embodiment of a clamping device according to the present invention 図２に示すクランプ装置のアンクランプ状態を示す正面断面図Front sectional view showing the unclamped state of the clamping device shown in FIG. 本願発明に係るクランプ装置の分解斜視図The exploded perspective view of the clamp device concerning the invention in this application 本願発明に係るクランプ装置の第二の実施形態を示す分解斜視図The disassembled perspective view which shows 2nd embodiment of the clamp apparatus based on this invention. 本願発明に係るクランプ装置の第三の実施形態を示す分解斜視図The disassembled perspective view which shows 3rd embodiment of the clamp apparatus based on this invention. 本願発明に係るクランプ装置の第四の実施形態を示す分解斜視図The disassembled perspective view which shows 4th embodiment of the clamp apparatus based on this invention. 本願発明に係るクランプ装置の第五の実施形態を示す分解斜視図The disassembled perspective view which shows 5th embodiment of the clamp apparatus based on this invention. 本願発明に係るクランプ装置の第六の実施形態を示す分解斜視図Exploded perspective view showing a sixth embodiment of the clamping device according to the present invention. 本願発明に係るクランプ装置の第七の実施形態を示す分解斜視図The disassembled perspective view which shows 7th embodiment of the clamp apparatus based on this invention. 本願発明に係るクランプ装置の第八の実施形態を示す分解斜視図The exploded perspective view which shows 8th embodiment of the clamp apparatus based on this invention. 一般的な５軸制御のマシニングセンタを示す斜視図Perspective view showing a general 5-axis control machining center

この発明に係るクランプ装置の第一の実施形態を図１から４に示す。このクランプ装置は、ワークＷをチャッキングするワークパレット１と、このワークパレット１を加工機のテーブル２上に固定するクランプユニット３とから構成されている。 1 to 4 show a first embodiment of a clamping device according to the present invention. This clamp device is composed of a work pallet 1 for chucking a work W and a clamp unit 3 for fixing the work pallet 1 on a table 2 of a processing machine.

このワークパレット１は、筒状の挿し部４を備えており、この挿し部４の筒内面の奥側に、前記筒内面の手前側の挿し部端部５の内径よりも大きな内径を有する段差部６が形成されている。さらに、挿し部端部５とこの段差部６の内面とをつなぐテーパ面７が形成されている。 The work pallet 1 includes a cylindrical insertion portion 4, and a step having an inner diameter larger than the inner diameter of the insertion portion end portion 5 on the front side of the cylindrical inner surface on the back side of the cylindrical inner surface of the insertion portion 4. Part 6 is formed. Further, a tapered surface 7 is formed to connect the insertion portion end portion 5 and the inner surface of the step portion 6.

その一方で、クランプユニット３は、挿し部４の内面側にぴったりと挿し込まれる受け部８を備えており、この受け部８に、挿し部４の内面側に向けて、受け部８の周面から突出、及び、この受け部８内に収納自在な突部９を一端側に形成したレバー部材１０が設けられている。この突部９の受け部８奥側には、その奥側ほど軸心側に向かって傾斜するテーパ面１１が形成されている。 On the other hand, the clamp unit 3 includes a receiving portion 8 that is inserted exactly on the inner surface side of the insertion portion 4, and the periphery of the receiving portion 8 is directed to the receiving portion 8 toward the inner surface side of the insertion portion 4. A lever member 10 is provided which protrudes from the surface and has a protruding portion 9 which can be stored in the receiving portion 8 on one end side. A tapered surface 11 is formed on the back side of the receiving portion 8 of the projecting portion 9 so as to incline toward the axial center side.

また、このレバー部材１０の他端側は、受け部８奥側の回動軸１２に軸支されていて、この回動軸１２周りに回動し得るようになっている。さらに、このレバー部材１０の先端側（突部９が形成されている側）には、コイルばね１３が設けられており、このコイルばね１３で、この先端側を受け部８の軸心側に付勢している。 Further, the other end side of the lever member 10 is pivotally supported by a rotation shaft 12 on the back side of the receiving portion 8 so that the lever member 10 can rotate around the rotation shaft 12. Further, a coil spring 13 is provided on the distal end side (the side on which the protrusion 9 is formed) of the lever member 10, and this distal end side is placed on the axial center side of the receiving portion 8 by the coil spring 13. Energized.

このレバー部材１０の受け部８軸心側には、カム１４が、レバー部材１０とこのカム１４のカム面とが当接するように設けられている。このカム面はそのカム軸１５に対して１８０度回転対称に形成されている。また、このカム１４のカム軸１５は、受け部８の軸心を通り、かつ、この軸心方向と垂直となっていて、クランプユニット３の側面に、このカム軸１５を回転させるためのボルト１６が露出している。 A cam 14 is provided on the receiving member 8 axis side of the lever member 10 so that the lever member 10 and the cam surface of the cam 14 come into contact with each other. This cam surface is formed 180 degrees rotationally symmetric with respect to the cam shaft 15. The cam shaft 15 of the cam 14 passes through the axis of the receiving portion 8 and is perpendicular to the axial direction, and is a bolt for rotating the cam shaft 15 on the side surface of the clamp unit 3. 16 is exposed.

また、カム軸１５には、押し上げカム１７がカム１４と同軸に設けられている。そして、クランプユニット３によるワークパレット１のクランプ時には、押し上げカム１７の小径部が受け部８に当接して、この受け部８がクランプシャフト１８側に位置する一方で（図２を参照）、ワークパレット１のアンクランプ時には、図３に示すように、押し上げカム１７の拡径部が受け部８に当接して、クランプユニット３から受け部８が突出するように変位する。この変異によって、ワークパレット１の挿し部４が、このワークパレット１の取り外し方向に押し出される。この押し出し作用によって、ワークＷの加工中にワークパレット１とクランプユニット３が強固に嵌合した場合でも、この嵌合が解除されて、このワークパレット１の取り外しを容易に行うことができる。 The cam shaft 15 is provided with a push-up cam 17 coaxially with the cam 14. When the work pallet 1 is clamped by the clamp unit 3, the small diameter portion of the push-up cam 17 abuts on the receiving portion 8, and the receiving portion 8 is positioned on the clamp shaft 18 side (see FIG. 2). When the pallet 1 is unclamped, as shown in FIG. 3, the enlarged diameter portion of the push-up cam 17 comes into contact with the receiving portion 8 and is displaced so that the receiving portion 8 protrudes from the clamp unit 3. Due to this variation, the insertion part 4 of the work pallet 1 is pushed out in the direction in which the work pallet 1 is removed. Even if the work pallet 1 and the clamp unit 3 are firmly fitted during the processing of the workpiece W by this pushing action, the fitting is released and the work pallet 1 can be easily removed.

また、挿し部４の先端には、深さの異なる２つの切欠き部１９、１９が形成されている一方で、受け部８には、この切欠き部１９がちょうど嵌合する嵌合部２０が形成されている。 Further, two notches 19 and 19 having different depths are formed at the distal end of the insertion portion 4, while the receiving portion 8 has a fitting portion 20 in which the notch 19 is just fitted. Is formed.

また、クランプユニット３には受け部８の回りを囲むようにガイド部２１が設けられており、このガイド部２１と受け部８の間の隙間に、挿し部４がぴったりと挿し込まれるようになっている。この受け部８の先端はガイド部２１よりも突出して設けられており、この受け部８が挿し部４の内面側に深く挿し込まれる。 Further, the clamp unit 3 is provided with a guide portion 21 so as to surround the receiving portion 8, and the insertion portion 4 is inserted exactly into the gap between the guide portion 21 and the receiving portion 8. It has become. The front end of the receiving portion 8 is provided so as to protrude from the guide portion 21, and the receiving portion 8 is inserted deeply into the inner surface side of the insertion portion 4.

このクランプユニット３でワークパレット１をクランプする際は、ワークパレット１の挿し部４をクランプユニット３の受け部８に、挿し部４先端の切欠き部１９と、受け部８の嵌合部２０とが嵌合するように挿し込んだ上で、レンチ等を用いてボルト１６を回す。そうすると、カム１４のカム軸１５が回転し、そのカム面に当接するレバー部材１０が、コイルばね１３の付勢力に抗して、突部９が受け部８の周面から突出するように回動軸１２回りに回動する。この突出によって、突部９に形成したテーパ面１１と、挿し部４の内面側に形成したテーパ面７とが当接し、ワークパレット１のクランプがなされる。 When the work pallet 1 is clamped by the clamp unit 3, the insertion part 4 of the work pallet 1 is inserted into the receiving part 8 of the clamping unit 3, the notch part 19 at the tip of the insertion part 4, and the fitting part 20 of the receiving part 8. Then, the bolt 16 is turned using a wrench or the like. Then, the cam shaft 15 of the cam 14 rotates, and the lever member 10 that contacts the cam surface rotates so that the protrusion 9 protrudes from the peripheral surface of the receiving portion 8 against the urging force of the coil spring 13. It rotates around the moving shaft 12. By this protrusion, the taper surface 11 formed on the protrusion 9 and the taper surface 7 formed on the inner surface side of the insertion portion 4 come into contact with each other, and the work pallet 1 is clamped.

加工対象のワークＷの底部には、ワークパレット１のジョー２２が嵌るテーパ面Ｔが形成されており、このジョー２２に設けられた調節ボルト２３を回転させて両ジョー２２、２２を接近させることにより、ワークＷをワークパレット１に確実に固定するようになっている。 A tapered surface T on which the jaw 22 of the work pallet 1 is fitted is formed at the bottom of the workpiece W to be processed, and the adjusting bolt 23 provided on the jaw 22 is rotated to bring the jaws 22 and 22 closer to each other. Thus, the work W is securely fixed to the work pallet 1.

上記の実施形態においては、カム１４のカム軸１５を受け部の軸心方向と垂直としたが、このカム軸１５を前記軸心方向と同軸とすることもできる。このようにカム１４を配置することにより、図１等に示した板カムにあっては、回転対称のカム面とすることによって複数のレバー部材１０を同期して回動することができる。このカム１４は、もちろん板カムに限定されず、このレバー部材１０に所定の回動を与え得るものであれば、他のカム形状を採用することもできる。 In the above embodiment, the cam shaft 15 of the cam 14 is perpendicular to the axial direction of the receiving portion. However, the cam shaft 15 may be coaxial with the axial direction. By arranging the cam 14 in this way, in the plate cam shown in FIG. 1 and the like, the plurality of lever members 10 can be rotated synchronously by using a rotationally symmetrical cam surface. Of course, the cam 14 is not limited to a plate cam, and any other cam shape can be adopted as long as it can give the lever member 10 a predetermined rotation.

また、挿し部４の先端に形成した切欠き部１９及び、受け部８に形成した嵌合部２０は必須の構成要素ではなく、段差部６に形成したテーパ面７と、突部９に形成したテーパ面１１との当接によって十分なクランプ状態が得られ、ワークＷのがたつきが生じないのであれば、適宜省略することもできる。 Further, the notch portion 19 formed at the tip of the insertion portion 4 and the fitting portion 20 formed at the receiving portion 8 are not essential components, but are formed at the tapered surface 7 formed at the step portion 6 and the protrusion 9. If a sufficient clamped state is obtained by contact with the tapered surface 11 and the work W does not rattle, it can be omitted as appropriate.

図１等に示す構成は、カム１４の回転を手動で行うものであるが、このクランプユニット３に、圧縮空気等の作動流体を導入し、この作動流体の供給及び遮断に対応するようにカム１４を回転させて、クランプ及びアンクランプ動作を自動化することができる。さらに、ワークパレット１に周溝状の掴み溝２４を形成しておくと、マシニングセンタのクランプユニット交換装置（図示せず）によってこの掴み溝２４を把持して、ワークパレット１の交換を自動的に行うことができる。すなわち、ワークＷの加工の全自動化を図ることができ、その加工作業の効率を大幅に向上することができる。このクランプユニット３のクランプ機構はカム１４に限定されず、例えば、ばね等の弾性部材を備えたピストン機構に置き換えることもできる。 In the configuration shown in FIG. 1 and the like, the cam 14 is manually rotated. A working fluid such as compressed air is introduced into the clamp unit 3 so that the cam can be supplied and shut off. 14 can be rotated to automate the clamping and unclamping operations. Further, when a grip groove 24 having a circumferential groove shape is formed in the work pallet 1, the grip pallet 24 is gripped by a clamping unit exchanging device (not shown) of the machining center, and the work pallet 1 is automatically replaced. It can be carried out. That is, it is possible to fully automate the processing of the workpiece W, and the efficiency of the processing operation can be greatly improved. The clamp mechanism of the clamp unit 3 is not limited to the cam 14 and can be replaced with, for example, a piston mechanism provided with an elastic member such as a spring.

このクランプユニット３でクランプするワークパレット１は、当然ながら図１の形態のものに限定されず、図５〜１１（第二〜八の実施形態）に示す種々のチャッキング機構を備えたワークパレット１と適宜交換することができる。これらのワークパレット１は、いずれも図１に示したワークパレット１と同じ形状の挿し部４を備え互換性を有するものであって、これらのワークパレット１を取り揃えておくことによって、種々の形状のワークＷについて容易に加工を行うことができる。 Needless to say, the work pallet 1 to be clamped by the clamp unit 3 is not limited to the form shown in FIG. 1, and the work pallet includes various chucking mechanisms shown in FIGS. 5 to 11 (second to eighth embodiments). 1 can be appropriately exchanged. Each of these work pallets 1 is provided with an insertion portion 4 having the same shape as the work pallet 1 shown in FIG. 1 and has compatibility, and by arranging these work pallets 1, various shapes can be obtained. The workpiece W can be easily processed.

図５に示すワークパレット１は、図１と同様に底部が角形のワークＷをチャッキングするものであり、図１に示したものと比較してより多くのジョー２２で前記チャッキングを行っている。また、図６に示すワークパレット１は、底部が円柱形のワークＷをチャッキングするものである。図５及び６に示すワークパレット１でチャッキングするワークＷの前記底部には、ワークパレット１のジョー２２が嵌まるテーパ面Ｔが形成されている。 The work pallet 1 shown in FIG. 5 chucks a square-shaped work W as in FIG. 1, and the chucking is performed with more jaws 22 than that shown in FIG. Yes. A work pallet 1 shown in FIG. 6 chucks a workpiece W having a cylindrical bottom. A tapered surface T on which the jaw 22 of the work pallet 1 is fitted is formed at the bottom of the work W chucked by the work pallet 1 shown in FIGS.

このテーパ面Ｔを形成しないワークＷをチャッキングするワークパレット１として、図７及び８に示すものがある。図７に示すワークパレット１は、凹部２５内にワークＷを嵌め込むとともに、この凹部２５の内壁から固定ボルト２６を突出させて、この固定ボルト２６とワークＷの当接力で、このワークＷを確実にチャッキングする。また、図８に示すワークパレット１は、凹部２５の一端にストッパ２７を備え、このストッパ２７から位置調節ボルト２８を突出してワークＷに当接させ、このワークＷの位置を調節するとともに、凹部２５の内壁から固定ボルト２６を突出させて、この固定ボルト２６で上記と同様にワークＷを確実にチャッキングする。 As a work pallet 1 for chucking the work W that does not form the tapered surface T, there is one shown in FIGS. In the work pallet 1 shown in FIG. 7, the work W is fitted into the recess 25, the fixing bolt 26 is projected from the inner wall of the recess 25, and the work W is moved by the contact force between the fixing bolt 26 and the work W. Make sure to chuck. Further, the work pallet 1 shown in FIG. 8 includes a stopper 27 at one end of the concave portion 25, and a position adjusting bolt 28 protrudes from the stopper 27 to abut against the workpiece W to adjust the position of the workpiece W and the concave portion 25. The fixing bolt 26 is protruded from the inner wall 25, and the workpiece W is reliably chucked by the fixing bolt 26 in the same manner as described above.

また、図９に示すように、ワークパレット１の上面側に向けて固定ボルト２６を突出させて、ワークＷの下面に形成したねじ穴にねじ込むとともに、位置決めピン２９を前記下面に形成した位置決め穴に挿し込んで、ワークＷのワークパレット１上における回り止めをし、このワークＷをワークパレット１に確実にチャッキングすることもできる。また、ワークパレット１のセンタにはインロー部３０が形成されている。このワークパレット１でチャッキングするワークＷの下面に嵌合突起を形成しておき、この嵌合突起をインロー部３０にきっちりと嵌め込むようにすると、この嵌め込みとともに、ワークパレット１に対するワークＷの芯出しがなされる。このため、芯出し作業を別途行う必要がなく、このワークＷのチャッキングを容易に行い得るとともに、高い加工精度を確保することができる。 Further, as shown in FIG. 9, the fixing bolt 26 protrudes toward the upper surface side of the work pallet 1 and is screwed into the screw hole formed on the lower surface of the work W, and the positioning pin 29 is formed on the lower surface. The work W can be prevented from rotating on the work pallet 1 and the work W can be securely chucked on the work pallet 1. An inlay portion 30 is formed at the center of the work pallet 1. When a fitting projection is formed on the lower surface of the workpiece W to be chucked by the work pallet 1 and the fitting projection is fitted into the spigot portion 30, the fitting of the workpiece W to the workpiece pallet 1 is performed together with the fitting. Centering is done. For this reason, it is not necessary to separately perform a centering operation, the workpiece W can be easily chucked, and high machining accuracy can be ensured.

図９に示した構成とすることで、ワークＷにフランジ部を形成することなくワークパレット１にチャッキングできるため、フランジ形成に伴う材料ロスを低減することができる。その一方で、ワークパレット１の上面に固定ボルト穴３１を形成しておき、フランジを形成したワークＷを固定ボルト２６で固定することも可能としている。 With the configuration shown in FIG. 9, the workpiece pallet 1 can be chucked without forming a flange portion on the workpiece W, so that a material loss associated with the flange formation can be reduced. On the other hand, a fixing bolt hole 31 is formed on the upper surface of the work pallet 1, and the work W on which the flange is formed can be fixed with the fixing bolt 26.

また、図１０に示すように、ワークパレット１のセンタに、その上面側に向けてセンタボルト３２を突出させて、ワークＷの下面センタに形成したねじ穴にねじ込んでワークパレット１に対するワークＷの芯出しをするとともに、位置決めピン２９を前記下面に形成した位置決め穴に挿し込んで、ワークＷのワークパレット１上における回り止めをする構成とすることもできる。 Further, as shown in FIG. 10, a center bolt 32 is protruded toward the upper surface side of the center of the work pallet 1 and is screwed into a screw hole formed in the lower surface center of the work W 1. In addition to centering, the positioning pin 29 can be inserted into a positioning hole formed in the lower surface to prevent the work W from being rotated on the work pallet 1.

この構成においても、図９に示したワークパレット１と同様に、ワークＷにフランジ部を形成することなくワークパレット１にチャッキングできるため、フランジ形成に伴う材料ロスを低減することができる。その一方で、ワークパレット１の上面に固定ボルト穴３１を形成しておき、図１０に示すように、フランジを形成したワークＷを固定ボルト２６で固定することも可能としている。 Even in this configuration, similarly to the work pallet 1 shown in FIG. 9, it is possible to chuck the work pallet 1 without forming a flange portion on the work W, and therefore it is possible to reduce material loss due to flange formation. On the other hand, the fixing bolt hole 31 is formed on the upper surface of the work pallet 1, and the work W on which the flange is formed can be fixed with the fixing bolt 26 as shown in FIG.

さらに、図１１に示すように、ワークパレット１に断面Ｔ字形のＴ字溝３３を形成し、このＴ字溝３３内にこのＴ字溝３３の上方への抜け出しを防止した係止部材（図示せず）を設けるとともに、このワークパレット１の上面側に、Ｌ字形の固定部材３４を設け、この固定部材３４の一端をワークＷの底部側面に形成した係止溝Ｋに嵌め込みつつ、この固定部材３４と係止部材を締結ボルト３５で締結するようにした構成とすることもできる。このワークパレット１の上面側に、方向の異なる複数本のＴ字溝３３を形成しておくことで、形状の異なる種々のワークＷをチャッキングすることができる。この固定部材３４はＬ字形のものに限定されず、ワークＷに形成した係止溝Ｋの形状に合わせて、最適な形状のものに適宜交換して使用することができる。 Further, as shown in FIG. 11, a T-shaped groove 33 having a T-shaped cross section is formed in the work pallet 1, and the locking member (FIG. 11) prevents the T-shaped groove 33 from coming out upward in the T-shaped groove 33. (Not shown), an L-shaped fixing member 34 is provided on the upper surface side of the work pallet 1, and one end of the fixing member 34 is fitted into a locking groove K formed on the side surface of the bottom of the work W. It can also be set as the structure which fastened the member 34 and the securing member with the fastening bolt 35. FIG. By forming a plurality of T-shaped grooves 33 having different directions on the upper surface side of the work pallet 1, various works W having different shapes can be chucked. The fixing member 34 is not limited to an L-shaped one, and can be used by appropriately replacing it with an optimum shape according to the shape of the locking groove K formed in the workpiece W.

上述したように、このワークパレット１の形状は、チャッキングするワークＷの形状に対応して種々のものを選択し得るが、このワークパレット１及びこれをクランプするクランプユニット３の大きさも、このワークＷの大きさに対応して適宜選択することができる。すなわち、このワークパレット１は、国際標準化機構（ＩＳＯ）のサイズ規格に則って製作されており、そのフランジ部の外径（図１中の矢印ｄを参照）として、例えば４０ｍｍ、６３ｍｍ、８０ｍｍ、１００ｍｍ、１２５ｍｍ、１６０ｍｍ等、種々のものを用意できる。そこで、ワークＷの形状やサイズに適合するワークパレット１を適宜採用することで、ワークＷのチャッキングを確実なものとし、その加工精度の向上を図ることができる。 As described above, various shapes of the work pallet 1 can be selected corresponding to the shape of the work W to be chucked. However, the size of the work pallet 1 and the clamp unit 3 for clamping the work pallet 1 can also be selected. It can be appropriately selected according to the size of the workpiece W. That is, the work pallet 1 is manufactured in accordance with the international standard organization (ISO) size standard, and the outer diameter of the flange portion (see arrow d in FIG. 1) is, for example, 40 mm, 63 mm, 80 mm, Various types such as 100 mm, 125 mm, and 160 mm can be prepared. Therefore, by appropriately adopting the work pallet 1 that matches the shape and size of the work W, the work W can be reliably chucked, and the processing accuracy can be improved.

１ワークパレット
２テーブル（ステージ）
３クランプユニット
４挿し部
５挿し部端部
６段差部
７（挿し部の）テーパ面
８受け部
９突部
１０レバー部材
１１（突部の）テーパ面
１２回動軸
１３コイルばね（付勢部材）
１４カム
１５カム軸
１６ボルト
１７押し上げカム
１８クランプシャフト
１９切欠き部
２０嵌合部
２１ガイド部
２２ジョー
２３調節ボルト
２４掴み溝
２５凹部
２６固定ボルト
２７ストッパ
２８位置調節ボルト
２９位置決めピン
３０インロー部
３１固定ボルト穴
３２センタボルト
３３Ｔ字溝
３４固定部材
３５締結ボルト 1 Work palette 2 Table (stage)
DESCRIPTION OF SYMBOLS 3 Clamp unit 4 Insertion part 5 Insertion part edge part 6 Step part 7 Tapered surface 8 (insertion part) Receiving part 9 Protrusion part 10 Lever member 11 Tapering surface 12 (protrusion part) Rotary shaft 13 Coil spring (biasing member) )
14 Cam 15 Cam shaft 16 Bolt 17 Push-up cam 18 Clamp shaft 19 Notch portion 20 Fitting portion 21 Guide portion 22 Jaw 23 Adjustment bolt 24 Grasp groove 25 Recess 26 Fixing bolt 27 Stopper 28 Position adjustment bolt 29 Positioning pin 30 Inlay portion 31 Fixing bolt hole 32 Center bolt 33 T-shaped groove 34 Fixing member 35 Fastening bolt

Claims

In a clamping device including a work pallet (1) for chucking a work (W) and a clamp unit (3) for fixing the work pallet (1) on a table (2),
The work pallet (1) includes a cylindrical insertion portion (4), and the inner side of the inner surface of the cylindrical inner surface of the insertion portion (4) is closer than the inner diameter of the insertion portion end (5) on the near side of the inner surface of the cylinder. While forming a stepped portion (6) having a large inner diameter and forming a tapered surface (7) connecting this stepped portion (6) and the inner surface of the insertion portion end (5),
The clamp unit (3) includes a receiving portion (8) to be inserted into the inner surface side of the insertion portion (4), and the receiving portion (8) is directed toward the inner surface side of the insertion portion (4). A lever member (10) that protrudes from the peripheral surface of the receiving portion (8) and has a protruding portion (9) that can be stored in the receiving portion is provided, and the lever member (10) is provided with the lever member (10). ) Is provided on the axial side of the receiving part (8), and a cam (14) is provided on the lever side of the lever part (10) on the axial side of the receiving part (8). A member (10) and the cam surface of the cam (14) are provided so as to contact each other, and the protrusion (9) becomes the biasing member as the cam (14) rotates around the cam shaft (15). Against the urging force of (13), it protrudes outward from the outer peripheral surface of the receiving part (8), Receiving portion of the serial projection (9) (8) taper surface inclined toward the larger the back side to the rear side axial end (11) is formed,
The insertion part (4) is inserted into the receiving part (8) to protrude the protrusion (9), and the taper surface (7) formed on the step part (6) and the protrusion (9) are formed. The work piece pallet (1) is clamped by the clamp unit (3) with the contact force with the tapered surface (11), while the protrusion (9) is accommodated. The taper surfaces (7, 11) are released from contact with each other so that the insertion portion (4) can be freely inserted and removed from the receiving portion (8) .
The cam shaft of the cam (14) (15), through the axial center of the receiving portion (8), and Ri the axial direction perpendicular der,
A push-up cam (17) is provided coaxially with the cam (14) on the cam shaft (15), and when the work pallet (1) is clamped by the clamp unit (3), a small-diameter portion of the push-up cam (17). Is in contact with the receiving portion (8), and the receiving portion (8) is displaced toward the clamp shaft (18) so that the entire length of the clamp unit (3) is shortened, while the work pallet (1) when unclamping, the push-up in contact with the receiving portion enlarged diameter portion of the cam (17), wherein the receiving portion from the clamp unit (3) (8) shall be the wherein the displaced so as to project clamp devices.

Clamping and unclamping of the work pallet (1) by the clamp unit (3) can be performed by changing the working fluid pressure accompanying the supply and shutoff of the working fluid to the receiving portion (8), or by the flow path of the working fluid The clamping device according to claim 1, wherein the clamping device is configured by switching between the two.

While forming a notch (19) at the tip of the insertion part (4), a fitting part (20) into which the notch (19) is fitted is formed in the receiving part (8), The clamping device according to claim 1 or 2 , wherein the clamp is made in a state in which the cutout portion (19) and the fitting portion (20) are fitted.

In a clamping device including a work pallet (1) for chucking a work (W) and a clamp unit (3) for fixing the work pallet (1) on a table (2),
The work pallet (1) includes a cylindrical insertion portion (4), and the inner side of the inner surface of the cylindrical inner surface of the insertion portion (4) is closer than the inner diameter of the insertion portion end (5) on the near side of the inner surface of the cylinder. While forming a stepped portion (6) having a large inner diameter and forming a tapered surface (7) connecting this stepped portion (6) and the inner surface of the insertion portion end (5),
The clamp unit (3) includes a receiving portion (8) to be inserted into the inner surface side of the insertion portion (4), and the receiving portion (8) is directed toward the inner surface side of the insertion portion (4). A lever member (10) that protrudes from the peripheral surface of the receiving portion (8) and has a protruding portion (9) that can be stored in the receiving portion is provided, and the lever member (10) is provided with the lever member (10). ) Is provided on the axial side of the receiving part (8), and a cam (14) is provided on the lever side of the lever part (10) on the axial side of the receiving part (8). A member (10) and the cam surface of the cam (14) are provided so as to contact each other, and the protrusion (9) becomes the biasing member as the cam (14) rotates around the cam shaft (15). Against the urging force of (13), it protrudes outward from the outer peripheral surface of the receiving part (8), Receiving portion of the serial projection (9) (8) taper surface inclined toward the larger the back side to the rear side axial end (11) is formed,
The insertion part (4) is inserted into the receiving part (8) to protrude the protrusion (9), and the taper surface (7) formed on the step part (6) and the protrusion (9) are formed. The work piece pallet (1) is clamped by the clamp unit (3) with the contact force with the tapered surface (11), while the protrusion (9) is accommodated. The taper surfaces (7, 11) are released from contact with each other so that the insertion portion (4) can be freely inserted and removed from the receiving portion (8) .
While forming a notch (19) at the tip of the insertion part (4), a fitting part (20) into which the notch (19) is fitted is formed in the receiving part (8), notch (19) and the fitting portion (20), features and to torque lamp device that it has to form the clamp at the fitted state.

In a clamping device including a work pallet (1) for chucking a work (W) and a clamp unit (3) for fixing the work pallet (1) on a table (2),
The work pallet (1) includes a cylindrical insertion portion (4), and the inner side of the inner surface of the cylindrical inner surface of the insertion portion (4) is closer than the inner diameter of the insertion portion end (5) on the near side of the inner surface of the cylinder. While forming a stepped portion (6) having a large inner diameter and forming a tapered surface (7) connecting this stepped portion (6) and the inner surface of the insertion portion end (5),
The clamp unit (3) includes a receiving portion (8) to be inserted into the inner surface side of the insertion portion (4), and the receiving portion (8) is directed toward the inner surface side of the insertion portion (4). A lever member (10) that protrudes from the peripheral surface of the receiving portion (8) and has a protruding portion (9) that can be stored in the receiving portion is provided, and the lever member (10) is provided with the lever member (10). ) Is provided on the axial side of the receiving part (8), and a cam (14) is provided on the lever side of the lever part (10) on the axial side of the receiving part (8). A member (10) and the cam surface of the cam (14) are provided so as to contact each other, and the protrusion (9) becomes the biasing member as the cam (14) rotates around the cam shaft (15). Against the urging force of (13), it protrudes outward from the outer peripheral surface of the receiving part (8), Receiving portion of the serial projection (9) (8) taper surface inclined toward the larger the back side to the rear side axial end (11) is formed,
The insertion part (4) is inserted into the receiving part (8) to protrude the protrusion (9), and the taper surface (7) formed on the step part (6) and the protrusion (9) are formed. The work piece pallet (1) is clamped by the clamp unit (3) with the contact force with the tapered surface (11), while the protrusion (9) is accommodated. The taper surfaces (7, 11) are released from contact with each other so that the insertion portion (4) can be freely inserted and removed from the receiving portion (8) .
The cam shaft of the cam (14) (15), through the axial center of the receiving portion (8), and Ri the axial direction perpendicular der,
While forming a notch (19) at the tip of the insertion part (4), a fitting part (20) into which the notch (19) is fitted is formed in the receiving part (8), notch (19) and the fitting portion (20), features and to torque lamp device that it has to form the clamp at the fitted state.

In a clamping device including a work pallet (1) for chucking a work (W) and a clamp unit (3) for fixing the work pallet (1) on a table (2),
The work pallet (1) includes a cylindrical insertion portion (4), and the inner side of the inner surface of the cylindrical inner surface of the insertion portion (4) is closer than the inner diameter of the insertion portion end (5) on the near side of the inner surface of the cylinder. While forming a stepped portion (6) having a large inner diameter and forming a tapered surface (7) connecting this stepped portion (6) and the inner surface of the insertion portion end (5),
The clamp unit (3) includes a receiving portion (8) to be inserted into the inner surface side of the insertion portion (4), and the receiving portion (8) is directed toward the inner surface side of the insertion portion (4). A lever member (10) that protrudes from the peripheral surface of the receiving portion (8) and has a protruding portion (9) that can be stored in the receiving portion is provided, and the lever member (10) is provided with the lever member (10). ) Is provided on the axial side of the receiving part (8), and a cam (14) is provided on the lever side of the lever part (10) on the axial side of the receiving part (8). A member (10) and the cam surface of the cam (14) are provided so as to contact each other, and the protrusion (9) becomes the biasing member as the cam (14) rotates around the cam shaft (15). Against the urging force of (13), it protrudes outward from the outer peripheral surface of the receiving part (8), Receiving portion of the serial projection (9) (8) taper surface inclined toward the larger the back side to the rear side axial end (11) is formed,
The insertion part (4) is inserted into the receiving part (8) to protrude the protrusion (9), and the taper surface (7) formed on the step part (6) and the protrusion (9) are formed. The work piece pallet (1) is clamped by the clamp unit (3) with the contact force with the tapered surface (11), while the protrusion (9) is accommodated. The taper surfaces (7, 11) are released from contact with each other so that the insertion portion (4) can be freely inserted and removed from the receiving portion (8) .
The cam shaft of the cam (14) (15), through the axial center of the receiving portion (8), and Ri the axial direction perpendicular der,
Clamping and unclamping of the work pallet (1) by the clamp unit (3) can be performed by changing the working fluid pressure accompanying the supply and shutoff of the working fluid to the receiving portion (8), or by the flow path of the working fluid. and so as to form by the switching,
While forming a notch (19) at the tip of the insertion part (4), a fitting part (20) into which the notch (19) is fitted is formed in the receiving part (8), notch (19) and the fitting portion (20), features and to torque lamp device that it has to form the clamp at the fitted state.

In a clamping device including a work pallet (1) for chucking a work (W) and a clamp unit (3) for fixing the work pallet (1) on a table (2),
The work pallet (1) includes a cylindrical insertion portion (4), and the inner side of the inner surface of the cylindrical inner surface of the insertion portion (4) is closer than the inner diameter of the insertion portion end (5) on the near side of the inner surface of the cylinder. While forming a stepped portion (6) having a large inner diameter and forming a tapered surface (7) connecting this stepped portion (6) and the inner surface of the insertion portion end (5),
The clamp unit (3) includes a receiving portion (8) to be inserted into the inner surface side of the insertion portion (4), and the receiving portion (8) is directed toward the inner surface side of the insertion portion (4). A lever member (10) that protrudes from the peripheral surface of the receiving portion (8) and has a protruding portion (9) that can be stored in the receiving portion is provided, and the lever member (10) is provided with the lever member (10). ) Is provided on the axial side of the receiving part (8), and a cam (14) is provided on the lever side of the lever part (10) on the axial side of the receiving part (8). A member (10) and the cam surface of the cam (14) are provided so as to contact each other, and the protrusion (9) becomes the biasing member as the cam (14) rotates around the cam shaft (15). Against the urging force of (13), it protrudes outward from the outer peripheral surface of the receiving part (8), Receiving portion of the serial projection (9) (8) taper surface inclined toward the larger the back side to the rear side axial end (11) is formed,
The insertion part (4) is inserted into the receiving part (8) to protrude the protrusion (9), and the taper surface (7) formed on the step part (6) and the protrusion (9) are formed. The work piece pallet (1) is clamped by the clamp unit (3) with the contact force with the tapered surface (11), while the protrusion (9) is accommodated. The taper surfaces (7, 11) are released from contact with each other so that the insertion portion (4) can be freely inserted and removed from the receiving portion (8) .
Clamping and unclamping of the work pallet (1) by the clamp unit (3) can be performed by changing the working fluid pressure accompanying the supply and shutoff of the working fluid to the receiving portion (8), or by the flow path of the working fluid. and so as to form by the switching,
While forming a notch (19) at the tip of the insertion part (4), a fitting part (20) into which the notch (19) is fitted is formed in the receiving part (8), notch (19) and the fitting portion (20), features and to torque lamp device that it has to form the clamp at the fitted state.

The receiving part (8) of the clamp unit (3) is protruded to the front end side of the receiving part (8) rather than the guide part (21) provided so as to surround the receiving part (8). The clamping device according to any one of claims 1 to 7 .