JP2009133363A

JP2009133363A - Clamp

Info

Publication number: JP2009133363A
Application number: JP2007308506A
Authority: JP
Inventors: Takeshi Ohashi; 勇志大橋
Original assignee: Ohashi Iron Works Co Ltd
Current assignee: Ohashi Iron Works Co Ltd
Priority date: 2007-11-29
Filing date: 2007-11-29
Publication date: 2009-06-18

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that an exclusive-use clamp is required for a non-adaptable mounted component different in thickness. <P>SOLUTION: The lower end of an adjusting bolt 3 passing through the base end of a clamp body 1 arranged on the upper side of a bolster A is threaded into a bolt hole 2 on the side of the bolster A. To the upper end of the adjusting bolt 3 being protruded from the upper face of the clamp body 1, a camshaft 4 is pivoted which is formed at the lower end of a grip lever 5. After the adjusting bolt 3 is moved up/down relative to the bolster A with the positive/reverse rotation of the adjusting bolt 3 for temporary fastening, the grip lever 5 is turned down and the clamp body 1 is thrust down by a cam portion 4 for final fastening. Thus, the mounted component W is fastened and fixed onto the bolster A in the state that the clamp body 1 and the mounted component W are in close contact with the upper face of the mounted component and with the upper face of the bolster A, respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、金型、治具等の被取付部品を工作機械等のボルスターに締付け固定するために使用するクランプに関する。 The present invention relates to a clamp that is used to fasten and fix a mounted part such as a mold or a jig to a bolster of a machine tool or the like.

従来、かかるクランプとしては、基板を貫通するロッドの下端にボルスターの蟻溝に対する係止部を一体的に形成すると共に該ロッドの先端に、先端部を基板を当接するカムとした第１リンクのカム側を支軸で回動自在に連結し、前記基板に設けた支柱に第２リンクの一端を支軸で回動自在に取付け、該第２リンクの先端にグリップレバーの中間点を支軸で回動自在に取付けると共に、該グリップレバーの先端を前記第１リンクの他端に軸で連結し、前記第２リンクにその回動を制限するストッパーを設けて、ロッドの係止部をボルスターの蟻溝に、ロッドを下型等の被取付部品の切欠き部に、それぞれ側方から挿入して基板をセットし、グリップレバーを押し下げると、第１リンクがその支軸の周りに回動してロッドが引上げられ、ロッドの係止部が蟻溝の鍔に当り、ロッドの係止部と基板との間に締付け力が発生して、被取付部品をボルスターに締付け固定する様にしたもので、グリップレバーを押し下げるだけで締付けができ、しかもその状態に保持するのにバネ等を必要とせず、油圧や圧縮空気を使用しないコンパクトな構成にすることで、着脱作業が容易であり、作業環境を良好に維持できると共に、クランプ自体が簡易な構成で安価に製作できて設備投資の低減が図れる様にしたものが見受けられる（例えば、特許文献１参照）。 Conventionally, as such a clamp, a locking portion for a dovetail groove of a bolster is integrally formed at the lower end of a rod penetrating the substrate, and the tip of the first link is a cam that abuts the substrate at the tip of the rod. The cam side is pivotally connected to a support shaft, one end of the second link is pivotally attached to the support provided on the substrate by the support shaft, and an intermediate point of the grip lever is attached to the tip of the second link. The grip lever is connected to the other end of the first link with a shaft, and a stopper for restricting the rotation is provided on the second link. In the dovetail groove, insert the rod into the notch of the mounted part such as the lower die from the side, set the board, and push down the grip lever to rotate the first link around its support shaft Then the rod is pulled up and the rod The locking part hits the ridge of the dovetail groove, and a tightening force is generated between the locking part of the rod and the board, so that the mounted part is fastened and fixed to the bolster. Simply push down the grip lever. It can be tightened and does not require a spring to keep it in that state, and it has a compact configuration that does not use hydraulic pressure or compressed air, making it easy to attach and detach, maintain a good working environment, There can be seen a clamp that can be manufactured at a low cost with a simple configuration and can reduce capital investment (for example, see Patent Document 1).

実開平７−６５５３号公報（要約書、請求項１、図１〜２）Japanese Utility Model Publication No. 7-6553 (abstract, claim 1, FIGS. 1-2)

しかし、上記従来技術にあっては、下記の通り解決せねばならない課題があった。
（１）グリップレバーが回動自在に取付けられた支柱が、基板における、カムの接地点より離れ被取付部品の外周部より突出した部位に位置しているため、グリップレバーを倒す際に基板のロッド側の端部が浮き上がり易い。
（２）グリップレバーを完全に押し倒した状態で、第２リンクのストッパーにより第１リンクが直立状態より僅か手前で停止し、第２リンクがストッパー側に回動力を受ける状態となってその締付け状態を維持する構成であるため、厚みが異なる被取付部品に対応出来ず、被取付部品毎に専用のクランパーが必要になる。
（３）仮に、グリップレバーを完全に押し倒さなくても締付け状態が維持出来るとしても、設置する被取付部品が厚ければグリップレバーが直立に近い状態になるため、加工作業に支障を来し兼ねない。 However, the above-described prior art has a problem that must be solved as follows.
(1) Since the support column on which the grip lever is pivotably mounted is located at a portion of the substrate that protrudes from the outer peripheral portion of the mounted component away from the cam contact point, when the grip lever is tilted, The rod end is easy to lift.
(2) With the grip lever fully pushed down, the stopper of the second link stops the first link slightly before the upright state, and the second link receives the rotational force on the stopper side and is tightened. Therefore, it is impossible to cope with mounted parts having different thicknesses, and a dedicated clamper is required for each mounted part.
(3) Even if the grip lever can be maintained even if it is not completely pushed down, the grip lever will be almost upright if the mounted parts to be installed are thick, which may hinder processing operations. Absent.

本発明は、上記従来技術に基づく、上記（１）〜（３）の課題に鑑み、ボルスターの上方に配置したクランプ本体の基端側を貫通する調節ボルトの下端部をボルスター側のボルト孔に螺入して、クランプ本体の先端部位とボルスターの上面との間に被取付部品の差込み空間を形成し、クランプ本体の上面より突出状態の調節ボルトの上端部に、グリップレバーの下端部に形成したカム部を軸着して、調節ボルトのボルト孔への螺入量により上記差込み空間を調節可能にすると共に、カム部の倒し時にクランプ本体を下方押圧する様にしたクランプを、クランプ本体の先端部位とボルスターの上面との間に被取付部品の外周部を位置させて締め付けることによって、被取付部品の外周部の外側に調節ボルトを位置させると共に、グリップレバーを調節ボルトの直上に配置する様にして、上記（１）の課題を解決し、又調節ボルトの正逆回転によりボルスターに対し調節ボルトを上下動させて差込み空間を拡縮可能にすると共に、グリップレバーを倒してカム部によりクランプ本体を下方押圧して、クランプ本体を被取付部品の上面に、被取付部品をボルスターの上面に夫々密着させる様にして、上記（２）、（３）の課題を解決する。 In view of the above problems (1) to (3), the present invention provides a bolt hole on the bolster side that has a lower end portion of an adjustment bolt penetrating the proximal end side of the clamp body disposed above the bolster. Screw in to form an insertion space for the mounted parts between the tip of the clamp body and the top surface of the bolster, and form at the upper end of the adjustment bolt that protrudes from the upper surface of the clamp body and at the lower end of the grip lever. The above-mentioned insertion space can be adjusted by the amount of screwing the adjustment bolt into the bolt hole, and the clamp that presses the clamp body downward when the cam part is tilted is attached to the clamp body. By positioning and tightening the outer peripheral part of the mounted part between the tip part and the upper surface of the bolster, the adjusting bolt is positioned outside the outer peripheral part of the mounted part, and the grip lever By arranging it directly above the adjustment bolt, the above-mentioned problem (1) can be solved, and the adjustment bolt can be moved up and down relative to the bolster by forward and reverse rotation of the adjustment bolt so that the insertion space can be expanded and contracted. The clamp body is pushed downward by the cam portion and the clamp body is brought into close contact with the upper surface of the attached component, and the attached component is brought into close contact with the upper surface of the bolster, thereby solving the problems (2) and (3). Resolve.

要するに本発明は、ボルスターの上方に配置したクランプ本体の基端側を貫通する調節ボルトの下端部をボルスター側のボルト孔に螺入して、クランプ本体の先端部位とボルスターの上面との間に被取付部品の差込み空間を形成し、クランプ本体の上面より突出状態の調節ボルトの上端部に、グリップレバーの下端部に形成したカム部を軸着して、調節ボルトのボルト孔への螺入量により上記差込み空間を調節可能にすると共に、カム部の倒し時にクランプ本体を下方押圧する様にしたので、グリップレバーによる調節ボルトの回転による仮締め作業及びグリップレバーを倒しての本締め作業のみで簡単にボルスターに対し被取付部品を取り付けることが出来、被取付部品の厚みが設定範囲内であればグリップレバーを略９０度倒した状態で締付け可能にすることが出来るため、複数種類の厚さの被取付部品に対応させ、且つ加工作業に支障を来さない様にセットすることが出来る。
又、ボルト孔を、ボルスター側に設けた取付部の上面に形成したので、ボルト孔をボルスターに直接形成せずに取り付けることが出来、更に取付部を、ボルスターに形成した蟻溝に対し着脱自在且つスライド可能に装着したので、蟻溝を有する既存の工作機械に簡単にセットすることが出来る。 In short, in the present invention, the lower end portion of the adjustment bolt that penetrates the proximal end side of the clamp body disposed above the bolster is screwed into the bolt hole on the bolster side, and the gap between the distal end portion of the clamp body and the upper surface of the bolster. Form the insertion space for the parts to be mounted, and attach the cam part formed on the lower end of the grip lever to the upper end of the adjustment bolt protruding from the upper surface of the clamp body, and screw it into the bolt hole of the adjustment bolt The above-mentioned insertion space can be adjusted according to the amount, and the clamp body is pressed downward when the cam part is tilted, so only the temporary tightening work by rotating the adjusting bolt with the grip lever and the final tightening work by tilting the grip lever. With this, you can easily attach the mounted part to the bolster, and if the thickness of the mounted part is within the set range, tilt the grip lever approximately 90 degrees. For allowing attaching can, to correspond to a plurality of types of the attachment part of the thickness, and machining operations can be set so as not hindrance to.
In addition, since the bolt hole is formed on the upper surface of the mounting part provided on the bolster side, it can be mounted without forming the bolt hole directly on the bolster, and the mounting part is detachable from the dovetail formed on the bolster. Since it is slidably mounted, it can be easily set on an existing machine tool having a dovetail.

上記取付部に、ボルスターの上面より突出した円柱状のガイド凸部を備え、クランプ本体の下面の基端側寄りに、上記ガイド突部がスライド可能に嵌入するガイド凹部を形成したので、ガイド凸部に対するクランプ本体の上下動がスムーズで、ガイド凸部に対しクランプ本体がぐらつかないため、締付け時にクランプ本体の先端側が持ち上がらず、確実に締め付けることが出来る。
更に、ガイド凹部を、クランプ本体の下面の基端側寄りに一体突設したガイド筒部の内部空間としたので、クランプ本体を薄くしてもガイド凹部を深く形成出来るため、セット可能な被取付部品の厚みの範囲を広く設定することが出来る等その実用的効果甚だ大である。 The mounting portion is provided with a cylindrical guide convex portion protruding from the upper surface of the bolster, and a guide concave portion into which the guide protruding portion is slidably fitted is formed near the base end side of the lower surface of the clamp body. The clamp body moves smoothly up and down with respect to the part, and the clamp body does not wobble with respect to the guide convex part, so that the tip side of the clamp body does not lift up when tightening, and can be securely tightened.
Furthermore, because the guide recess is the internal space of the guide tube that is integrally projected near the base end of the lower surface of the clamp body, the guide recess can be formed deeply even if the clamp body is thinned. The range of the thickness of the parts can be set widely, and the practical effect is significant.

以下、本発明に係るクランプの実施の形態を図面に基づき説明する。
図１、２、５は、本発明に係るクランプの斜視図、図１のＸ−Ｘ断面図、分解斜視図であり、かかるクランプにあっては、主に、ボルスターＡの上面の上方に配設したクランプ本体１と、該クランプ本体１を遊貫して下端側をボルスターＡ側に形成したボルト孔２に螺入した調整ボルト３と、上記クランプ本体１の上面より突出した上記調整ボルト３の上端に軸着したカム部４を有するグリップレバー５とを備え、調整ボルト３のボルト孔２への螺入量によりボルスターＡの上面とクランプ本体１の先端との間に形成される被取付部品Ｗの差込み空間Ｈを調節可能にすると共に、グリップレバー５を起こしたり倒してカム部４を回転させることでクランプ本体１を下方押圧して、被取付部品Ｗの上面にクランプ本体１を密着させる様にしいる。 Hereinafter, embodiments of a clamp according to the present invention will be described with reference to the drawings.
1, 2 and 5 are a perspective view of a clamp according to the present invention, a sectional view taken along line XX of FIG. 1, and an exploded perspective view. Such a clamp is mainly disposed above the upper surface of the bolster A. The clamp body 1 provided, the adjustment bolt 3 loosely threaded through the clamp body 1 and screwed into the bolt hole 2 formed at the lower end side on the bolster A side, and the adjustment bolt 3 protruding from the upper surface of the clamp body 1 And a grip lever 5 having a cam portion 4 pivotally attached to the upper end of the bolster A, and an attachment to be formed between the upper surface of the bolster A and the tip of the clamp body 1 by the screwing amount of the adjustment bolt 3 into the bolt hole 2 The insertion space H of the part W can be adjusted, and the clamp body 1 is pressed downward by raising or lowering the grip lever 5 and rotating the cam part 4 so that the clamp body 1 adheres to the upper surface of the mounted part W. Trying to let

上記クランプ本体１にあっては、図５に示す様に、横長状の主材６の基端側寄りに上記調整ボルト３の挿通孔７を貫設すると共に、先端下面に当接突起８を一体突設したもので、かかるクランプ本体１を調整ボルト３に対し上下動可能にしている。 In the clamp body 1, as shown in FIG. 5, the insertion hole 7 of the adjustment bolt 3 is provided near the base end side of the horizontally long main material 6, and the contact protrusion 8 is provided on the lower surface of the distal end. The clamp main body 1 is vertically projecting and can be moved up and down with respect to the adjustment bolt 3.

上記調整ボルト３にあっては、図５に示す様に、ボルト本体９の上端に起立板状のヒンジ板10を一体形成すると共に、該ヒンジ板10の側面中央に水平なピン挿通孔11貫設し、ヒンジ板10とクランプ本体１の上面との間に、ボルト本体９が貫通状態の座金12を介設している。
又、クランプ本体１とボルスターＡ側の間に圧縮バネ13を設け、該圧縮バネ13内を調整ボルト３が貫通し、かかる圧縮バネ13によりクランプ本体１を上方付勢して座金12を介してヒンジ板10を上方押圧する様にしているため、クランプ本体１から手を離してもそのままで下動しない。 In the adjusting bolt 3, as shown in FIG. 5, an upright plate-like hinge plate 10 is integrally formed at the upper end of the bolt body 9, and a horizontal pin insertion hole 11 is inserted in the center of the side surface of the hinge plate 10. The bolt body 9 is interposed between the hinge plate 10 and the upper surface of the clamp body 1 with a washer 12 in a penetrating state.
Further, a compression spring 13 is provided between the clamp body 1 and the bolster A side, and an adjustment bolt 3 passes through the compression spring 13, and the clamp body 1 is biased upward by the compression spring 13 through a washer 12. Since the hinge plate 10 is pressed upward, even if the hand is released from the clamp body 1, it does not move down as it is.

上記グリップレバー５にあっては、上記カム部４の上面に丸棒状のレバー本体14を一体形成したもので、カム部４にあっては、図５に示す様に、下面を円周面状のカム面15とし、該カム面15の円弧中心15a と偏心位置で調整ボルト３に軸着され、かかるカム部４の回転中心4aは図１０に示す様に、カム面15の円弧中心15a より下端寄りにして、図１１に示す様に、カム部４の回転に伴いカム面15の最下点が徐々に下方に移動する様にしている。又、カム部４はカム面15の円弧中心とカム部４の回転中心を通る中心線に対し対称形状としている。
具体的には、図５に示す様に、カム部４の下部中央に上記ヒンジ板10を差し込む切込16を形成してその両側にカム片17、17a を形成し、該カム片17、17a にピン挿通孔18、18a を形成し、該ピン挿通孔18、18a と、切込16内に差し込まれた調整ボルト３におけるヒンジ板10のピン挿通孔11とにピン19を挿設し、該ピン19の両端面に、座金20、20a を介してボルト21、21a を螺入して、調整ボルト３に対しカム部４を回転可能に取り付けて、クランプ本体１に対し起こし・倒し自在と成している。 In the grip lever 5, a round bar-shaped lever body 14 is integrally formed on the upper surface of the cam portion 4. In the cam portion 4, the lower surface has a circumferential surface as shown in FIG. 5. The cam surface 15 is pivotally mounted on the adjusting bolt 3 at an eccentric position with the arc center 15a of the cam surface 15, and the rotation center 4a of the cam portion 4 is from the arc center 15a of the cam surface 15 as shown in FIG. Near the lower end, as shown in FIG. 11, the lowest point of the cam surface 15 gradually moves downward as the cam portion 4 rotates. The cam portion 4 is symmetrical with respect to the center line passing through the arc center of the cam surface 15 and the rotation center of the cam portion 4.
Specifically, as shown in FIG. 5, a notch 16 into which the hinge plate 10 is inserted is formed at the lower center of the cam portion 4, and cam pieces 17, 17a are formed on both sides thereof, and the cam pieces 17, 17a are formed. Pin insertion holes 18, 18 a are formed, and pins 19 are inserted into the pin insertion holes 18, 18 a and the pin insertion holes 11 of the hinge plate 10 in the adjustment bolt 3 inserted into the notches 16. Bolts 21 and 21a are screwed into both end faces of the pin 19 through washers 20 and 20a, and the cam portion 4 is rotatably attached to the adjustment bolt 3 so that the clamp body 1 can be raised and lowered freely. is doing.

上記ボルト孔２を、ボルスターＡ側に設けた取付部22の上面に形成し、該取付部22は、図１〜９に示す様に、ボルスターＡに対し着脱可能に装着されていたり、図１２に示す様に、ボルスターＡの上面に一体形成され、前者の取付部22にあっては、ボルスターＡに対し着脱可能な取付部22にあっては、ボルスターＡの上面に形成された蟻溝Ｂに対しスライド可能且つ締付け時に蟻溝Ｂの段部Ｃ、Ｃａに係合可能に装着されている。 The bolt hole 2 is formed on the upper surface of an attachment portion 22 provided on the bolster A side, and the attachment portion 22 is detachably attached to the bolster A as shown in FIGS. As shown in the figure, the dovetail B formed on the upper surface of the bolster A is integrally formed on the upper surface of the bolster A. Is mounted so as to be slidable and engageable with the stepped portions C and Ca of the dovetail groove B at the time of tightening.

上記着脱式又は固定式の取付部22は、両方共にボルスターＡの上面より上方突出する円柱状のガイド凸部23を有し、該ガイド凸部23の上面中央にボルト孔２を形成し、上記クランプ本体１の下面の基端側寄りに、上記ガイド凸部23がスライド可能に嵌入するガイド凹部24を形成し、該ガイド凹部24と上記調整ボルト３の挿通孔７を同軸線上に配置形成している。
又、上記ガイド凹部24は、図２、３、５に示す様に、上記クランプ本体１における主材６の下面の基端側寄りに一体形成したガイド筒部25の内部空間であるが、ガイド凹部24を、その深さがガイド筒部25の高さより深くなる様に、主材６側へ食い込む様に形成されている。そして、圧縮バネ13の上端をガイド凹部24の上底面に、下端をガイド凸部23の上面に押圧したバネ座26の底面に夫々当接させて、クランプ本体１の下動を防止し装着過程での上記差込み空間Ｈを保持する様にしている。 Both the detachable or fixed attachment portions 22 have a cylindrical guide convex portion 23 that protrudes upward from the upper surface of the bolster A, the bolt hole 2 is formed in the center of the upper surface of the guide convex portion 23, and A guide concave portion 24 into which the guide convex portion 23 is slidably fitted is formed near the base end side of the lower surface of the clamp body 1, and the guide concave portion 24 and the insertion hole 7 of the adjusting bolt 3 are arranged and formed on a coaxial line. ing.
2, 3 and 5, the guide recess 24 is an internal space of a guide tube portion 25 integrally formed near the base end side of the lower surface of the main material 6 in the clamp body 1. The concave portion 24 is formed so as to bite into the main material 6 side so that the depth thereof is deeper than the height of the guide tube portion 25. Then, the upper end of the compression spring 13 is brought into contact with the upper bottom surface of the guide recess 24 and the lower end thereof is brought into contact with the bottom surface of the spring seat 26 pressed against the upper surface of the guide projection 23, thereby preventing the clamp body 1 from moving downward and mounting process. The insertion space H is maintained.

又、着脱式の取付部22は、ボルスターＡの上面に形成された蟻溝Ｂ内に収容される逆Ｔ字状のスライド体27の上面中央に上記ガイド凸部23が一体形成されている。尚、ガイド凸部23は、スライド体27の上面中央に一体形成された、蟻溝Ｂの上方開口幅より大径な円板状の鍔部28の上面中央に一体形成されている。 The detachable attachment portion 22 has the guide protrusion 23 integrally formed at the center of the upper surface of an inverted T-shaped slide body 27 accommodated in a dovetail B formed on the upper surface of the bolster A. The guide convex portion 23 is integrally formed at the center of the upper surface of the disc-shaped flange portion 28 which is integrally formed at the center of the upper surface of the slide body 27 and has a diameter larger than the upper opening width of the dovetail groove B.

次に、本発明に係るクランプの作用について説明する。
取付部22をボルスターＡの蟻溝Ｂに挿入すると、鍔部28の両側部がボルスターＡの上面における蟻溝Ｂの両側部位に接地し、クランプ本体１の先端下方に被取付部品Ｗの外周部位が位置するまで取付部22をスライドし、図４（ａ）に示す様に、起立状態のグリップレバー５を調整ボルト３を回転させる様に操作して、クランプ本体１の当接突起８を被取付部品Ｗの外周部位の上面に当接させるか、僅かに離れた状態にした後、図４（ｂ）に示す様に、グリップレバー５を倒して当接突起８を被取付部品Ｗの外周部位の上面に密着させると共に、取付部22を蟻溝Ｂの段部Ｃ、Ｃａに密着させて、被取付部品Ｗの外周部位をクランプ本体１とボルスターＡとで挟着してボルスターＡに対し被取付部品Ｗを固定する。
又、グリップレバー５は、図６の実線で示す様に、蟻溝Ｂに対し並行にならなくても良く、グリップレバー５を略９０度まで倒すことが可能な位置で尚且つ被取付部品Ｗの外周部より外側へ倒すことが可能な位置であれば、例えば図６の一点鎖線で示す様にな位置であっても良く、又倒したグリップレバー５により更に調整ボルト３を回転させて完全に締めることも可能である。
尚、調整ボルト３のボルト孔２への螺入量、即ち調整ボルト３の回転量によりグリップレバー５の締付け時の倒し角が異なることから、グリップレバー５が起立状態に近い場合は、調整ボルト３を僅かに上動させるべく調整ボルト３を若干逆回転させた後、改めてグリップレバー５を倒せば、グリップレバー５は前状態より倒れる。 Next, the operation of the clamp according to the present invention will be described.
When the mounting portion 22 is inserted into the dovetail B of the bolster A, both side portions of the flange portion 28 are grounded to both sides of the dovetail B on the upper surface of the bolster A, and the outer peripheral portion of the mounted part W is located below the tip of the clamp body 1. As shown in FIG. 4 (a), the mounting portion 22 is slid and the grip lever 5 in an upright state is operated so as to rotate the adjusting bolt 3, so that the contact protrusion 8 of the clamp body 1 is covered. After making it contact | abut to the upper surface of the outer peripheral part of the attachment component W, or making it the state slightly separated, as shown in FIG.4 (b), the grip lever 5 is tilted and the contact protrusion 8 is outer periphery of the attachment component W The mounting part 22 is brought into close contact with the step C and Ca of the dovetail B and the outer peripheral part of the mounted part W is clamped between the clamp body 1 and the bolster A to the bolster A. The mounted part W is fixed.
Further, as shown by the solid line in FIG. 6, the grip lever 5 does not have to be parallel to the dovetail B. The grip lever 5 is at a position where the grip lever 5 can be tilted to about 90 degrees and the mounted component W 6 may be a position as shown by a one-dot chain line in FIG. 6, for example, and the adjustment bolt 3 is further rotated by the tilted grip lever 5 to complete the position. It is also possible to tighten it.
Since the tilt angle when the grip lever 5 is tightened differs depending on the screwing amount of the adjustment bolt 3 into the bolt hole 2, that is, the rotation amount of the adjustment bolt 3, the adjustment bolt After the adjustment bolt 3 is slightly rotated in the reverse direction so as to slightly move 3, if the grip lever 5 is tilted again, the grip lever 5 falls from the previous state.

クランプ本体１における当接突起８の被取付部品Ｗの外周部位への密着工程にあっては、先ず図８及び図１１の実線で示す直立状態のグリップレバー５を、図９及び図１１の二点鎖線で示す倒し状態にする過程において、グリップレバー５下端側のカム部４の最下面の位置が徐々に下方に推移して行くのに伴い、クランプ本体１を徐々に下方押圧して当接突起８が被取付部品Ｗの上面に、調整ボルト３を徐々に上動させて取付部22のスライド体27が蟻溝Ｂの段部Ｃ、Ｃａに夫々完全密着する。 In the contact process of the contact protrusion 8 in the clamp body 1 to the outer peripheral portion of the mounted part W, first, the grip lever 5 in the upright state shown by the solid line in FIG. 8 and FIG. As the position of the lowermost surface of the cam part 4 on the lower end side of the grip lever 5 gradually moves downward in the process of making the tilted state shown by the chain line, the clamp body 1 is gradually pressed downward to come into contact. The protrusion 8 is gradually moved upward on the upper surface of the part W to be attached, and the slide body 27 of the attachment part 22 is completely brought into close contact with the step parts C and Ca of the dovetail B, respectively.

ボルスターＡ側のガイド凸部23に対し、クランプ本体１側のガイド凹部24がスライド可能に嵌入していることから、調整ボルト３による位置調整時及びグリップレバー５による締付け時にクランプ本体１がスムーズに上下動する。 Since the guide recess 24 on the clamp body 1 side is slidably inserted into the guide protrusion 23 on the bolster A side, the clamp body 1 can be smoothly moved when adjusting the position with the adjusting bolt 3 and tightening with the grip lever 5. Move up and down.

取付部22における鍔部28の両側部が、ボルスターＡの上面における蟻溝Ｂの両側部位に接地するため、取付部22の下方部位であるスライド体27が蟻溝Ｂ内に吊り下げられた様な状態で収容され、蟻溝Ｂの底部まで落とし込まれず、スライド操作もスムーズになる。 Since both side portions of the flange portion 28 in the mounting portion 22 are grounded to both side portions of the dovetail B on the upper surface of the bolster A, the slide body 27 which is a lower portion of the mounting portion 22 is suspended in the dovetail B. And is not dropped down to the bottom of the dovetail B, and the sliding operation is smooth.

本発明に係るクランプの斜視図である。It is a perspective view of the clamp concerning the present invention. 図１のＸ−Ｘ断面図である。It is XX sectional drawing of FIG. クランプ本体を図１の状態より上動させたクランプの断面図である。It is sectional drawing of the clamp which moved the clamp main body from the state of FIG. 図１の状態から調節ボルトを９０度回転させた状態の要部拡大図である。It is a principal part enlarged view of the state which rotated the adjustment bolt 90 degree | times from the state of FIG. 図１の状態からカム部を倒した状態の要部拡大図である。It is a principal part enlarged view of the state which fell the cam part from the state of FIG. 図１のクランプの分解斜視図である。It is a disassembled perspective view of the clamp of FIG. 図１のクランプの緊締状態での取付状態を示す平面図の要部拡大図である。It is a principal part enlarged view of the top view which shows the attachment state in the clamp | tightening state of the clamp of FIG. 図６のＹ−Ｙ断面の要部拡大図である。It is a principal part enlarged view of the YY cross section of FIG. 緩めた状態のクランプの取付状態を示す正面図である。It is a front view which shows the attachment state of the clamp of the loosened state. 緊締状態のクランプの取付状態を示す正面図である。It is a front view which shows the attachment state of the clamp | tightening state clamp. グリップレバーにおけるカム部の拡大正面図である。It is an enlarged front view of the cam part in a grip lever. クランプの緩めた状態と緊締状態とでのカム部の状態の差異を説明する正面図である。It is a front view explaining the difference of the state of the cam part in the loosened state and clamped state of a clamp. 固定式のクランプの斜視図である。It is a perspective view of a fixed clamp.

符号の説明Explanation of symbols

１クランプ本体
２ボルト孔
３調節ボルト
４カム部
５グリップレバー
22 取付部
23 ガイド凸部
24 ガイド凹部
25 ガイド筒部
Ａボルスター
Ｂ蟻溝
Ｈ差込み空間
Ｗ被取付部品 1 Clamp body 2 Bolt hole 3 Adjustment bolt 4 Cam part 5 Grip lever
22 Mounting part
23 Guide protrusion
24 Guide recess
25 Guide cylinder A Bolster B Dovetail H Insertion space W Mounted parts

Claims

工作機械におけるボルスターへの被取付部品を固定するためのクランプであって、ボルスターの上方に配置したクランプ本体の基端側を貫通する調節ボルトの下端部をボルスター側のボルト孔に螺入して、クランプ本体の先端部位とボルスターの上面との間に被取付部品の差込み空間を形成し、クランプ本体の上面より突出状態の調節ボルトの上端部に、グリップレバーの下端部に形成したカム部を軸着して、調節ボルトのボルト孔への螺入量により上記差込み空間を調節可能にすると共に、カム部の倒し時にクランプ本体を下方押圧する様にしたことを特徴とするクランプ。 A clamp for fixing a part to be attached to a bolster in a machine tool, wherein a lower end portion of an adjustment bolt that penetrates a proximal end side of a clamp body disposed above the bolster is screwed into a bolt hole on a bolster side. An insertion space for the mounted part is formed between the tip part of the clamp body and the upper surface of the bolster, and a cam part formed at the lower end part of the grip lever is formed at the upper end part of the adjustment bolt protruding from the upper surface of the clamp body. A clamp characterized in that the insertion space can be adjusted according to the amount of screwing the adjustment bolt into the bolt hole, and the clamp body is pressed downward when the cam portion is tilted.

ボルト孔を、ボルスター側に設けた取付部の上面に形成したことを特徴とする請求項１記載のクランプ。 2. The clamp according to claim 1, wherein the bolt hole is formed on the upper surface of the mounting portion provided on the bolster side.

取付部を、ボルスターに形成した蟻溝に対し着脱自在且つスライド可能に装着したことを特徴とする請求項２記載のクランプ。 The clamp according to claim 2, wherein the attachment portion is detachably and slidably attached to a dovetail formed in the bolster.

取付部に、ボルスターの上面より突出した円柱状のガイド凸部を備え、クランプ本体の下面の基端側寄りに、上記ガイド突部がスライド可能に嵌入するガイド凹部を形成したことを特徴とする請求項２又は３記載のクランプ。 The mounting portion is provided with a cylindrical guide protrusion protruding from the upper surface of the bolster, and a guide recess into which the guide protrusion is slidably fitted is formed near the base end side of the lower surface of the clamp body. The clamp according to claim 2 or 3.

ガイド凹部を、クランプ本体の下面の基端側寄りに一体突設したガイド筒部の内部空間としたことを特徴とする請求項４記載のクランプ。 The clamp according to claim 4, wherein the guide recess is an internal space of a guide tube portion integrally projecting toward the base end side of the lower surface of the clamp body.