JP2007092827A - Swiveling type clamp cylinder - Google Patents

Swiveling type clamp cylinder Download PDF

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JP2007092827A
JP2007092827A JP2005281111A JP2005281111A JP2007092827A JP 2007092827 A JP2007092827 A JP 2007092827A JP 2005281111 A JP2005281111 A JP 2005281111A JP 2005281111 A JP2005281111 A JP 2005281111A JP 2007092827 A JP2007092827 A JP 2007092827A
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piston rod
axis
pin member
mounting holes
cylinder
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JP4671032B2 (en
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Shuhei Tanaka
修平 田中
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Howa Machinery Ltd
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Howa Machinery Ltd
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Priority to JP2005281111A priority Critical patent/JP4671032B2/en
Priority to TW095134006A priority patent/TW200718871A/en
Priority to KR20060093980A priority patent/KR100809552B1/en
Priority to CNB2006101595768A priority patent/CN100528474C/en
Publication of JP2007092827A publication Critical patent/JP2007092827A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a swiveling type clamp cylinder capable of easily increasing the speed of clamping/unclamping operation of workpieces and fitting a long clamper to a piston rod. <P>SOLUTION: In a rod cover 5, pin members 19 are rotatably fitted to a plurality of mounting holes 18 provided so as not to cross the axis line CL of the piston rod 11, respectively. Engagement quantity L of the pin members 19 with guide grooves 14 for swiveling in the axis line CL side of the piston rod 11 in the pin members 19 is set larger than that in the side opposite to the axis line CL side of the piston rod 11. Outer peripheral faces 21 in the side opposite to the axis line CL side of the piston rod 11 are supported by the inner faces of the mounting holes 18 over the approximately total length. Thus, excessive load and impact can be received by the pin members 19, and increase in the speed of the clamping/unclamping operation and fitting of the long clamper 12 to the piston rod 11 can be easily performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は旋回式クランプシリンダに関する。   The present invention relates to a swivel clamp cylinder.

旋回式クランプシリンダは、ピストンを内蔵するシリンダ本体の一端部からピストンに連結したピストンロッドが突出し、シリンダ本体に設けた複数のガイド部材とピストンロッドに設けた複数の旋回用案内溝とを係合させて、ピストンの移動によりピストンロッドが旋回し、かつ、軸線方向に移動して、ピストンロッドに設けたクランパがワークをクランプするようになっている。従来は、前記ガイド部材が特許文献１のように係合ボール（鋼球）であったり、特許文献２のようにピストンロッドの軸線方向へ向いたピンであるものが知られている。
特許第３６２１０８２号公報 特開２０００−８７９０９号公報 The swiveling clamp cylinder has a piston rod connected to the piston protruding from one end of the cylinder body containing the piston, and engages a plurality of guide members provided on the cylinder body with a plurality of turning guide grooves provided on the piston rod. Thus, the piston rod turns by the movement of the piston and moves in the axial direction, and a clamper provided on the piston rod clamps the workpiece. Conventionally, it is known that the guide member is an engagement ball (steel ball) as in Patent Document 1 or a pin oriented in the axial direction of a piston rod as in Patent Document 2.
Japanese Patent No. 3621082 JP 2000-87909 A

上記の旋回式クランプシリンダは、ワークのクランプ、アンクランプ動作速度を上げるためにピストンの移動速度を速めたり、ピストンロッドに長いクランパを取り付けることでピストンロッドにかかる慣性モーメントが増大した場合には、ガイド部材と旋回用案内溝に過大な負荷や衝撃がかかる。そして、特許文献１のように、回動自在に支持された係合ボールを円弧状の旋回用案内溝に嵌入させたものであると、係合ボールが回動しない場合には旋回用案内溝との間で大きな摩擦力が生じるおそれがあった。また、特許文献２のように、ピンと旋回用案内溝を係合させたものであると、溝に突出したピンの先端部に過大な負荷や衝撃を吸収させることになり、ピンが早期に破損する問題があった。よって、従来ではワークのクランプ、アンクランプ動作速度を上げたり、ピストンロッドに長いクランパを取り付けたりすることが容易にできなかった。   The above-mentioned swivel clamp cylinder increases the movement speed of the piston in order to increase the workpiece clamping and unclamping operation speed, or when the inertia moment applied to the piston rod increases by attaching a long clamper to the piston rod, An excessive load or impact is applied to the guide member and the turning guide groove. Then, as in Patent Document 1, when the engaging ball supported rotatably is fitted into the arcuate turning guide groove, the turning guide groove is provided when the engaging ball does not turn. There was a risk that a large frictional force would be generated between the two. Further, as in Patent Document 2, when the pin and the turning guide groove are engaged, an excessive load or impact is absorbed at the tip portion of the pin protruding from the groove, and the pin is damaged early. There was a problem to do. Therefore, conventionally, it has not been easy to increase the work clamping / unclamping operation speed or attach a long clamper to the piston rod.

そこで本発明の課題は、上記問題点を解決するもので、ワークのクランプ、アンクランプ動作速度を上げたり、ピストンロッドに長いクランパを取り付けたりすることが容易にできる旋回式クランプシリンダを提供することを目的とする。   SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and to provide a swivel clamp cylinder that can easily increase the work clamping and unclamping operation speed and attach a long clamper to a piston rod. With the goal.

本発明の旋回式クランプシリンダは、ピストンを内蔵するシリンダ本体の一端部からピストンに連結したピストンロッドが突出し、シリンダ本体に設けた複数のガイド部材とピストンロッドに設けた複数の旋回用案内溝とを係合させて、ピストンの移動によりピストンロッドが旋回し、かつ、軸線方向に移動して、ピストンロッドに設けたクランパがワークをクランプするようにした旋回式クランプシリンダにおいて、前記ガイド部材をピン部材で構成し、シリンダ本体に、孔軸線がピストンロッドの軸線と交差しないように設けた複数の取付孔にピン部材を夫々回動自在に嵌装して成ることを特徴とする。
また、本発明は、前記の旋回式クランプシリンダにおいて、複数の取付孔の少なくとも２つは、それらの孔軸線の一方がピストンロッド側に向かってピストンロッドの軸線の右側を通り、他方が左側を通るように設け、夫々の取付孔に嵌装したピン部材と旋回用案内溝との係合量が、ピストンロッドの軸線を中心とする回動方向において互いにピン部材の逆側で大きくなるようにしたことを特徴とする。 The pivot clamp cylinder of the present invention has a piston rod connected to the piston projecting from one end of a cylinder body containing the piston, a plurality of guide members provided on the cylinder body, and a plurality of turning guide grooves provided on the piston rod. In the swiveling clamp cylinder in which the piston rod is swung by the movement of the piston and moved in the axial direction so that the clamper provided on the piston rod clamps the workpiece, the guide member is pinned A pin member is rotatably fitted in a plurality of mounting holes which are formed of members and are provided in the cylinder body so that the hole axis does not intersect the axis of the piston rod.
Further, the present invention provides the above-described orbiting clamp cylinder, wherein at least two of the plurality of mounting holes are such that one of the hole axis lines passes through the right side of the piston rod axis line toward the piston rod side, and the other is on the left side. The amount of engagement between the pin member fitted in each mounting hole and the turning guide groove is increased on the opposite side of the pin member in the rotation direction around the axis of the piston rod. It is characterized by that.

また、本発明は、前記の旋回式クランプシリンダにおいて、シリンダ本体に一対一組とする二組の取付孔をシリンダ中心線に対して対称に設け、これら一対の取付孔の孔軸線の一方がピストンロッド側に向かってピストンロッドの軸線の右側を通り、他方が左側を通るように設けたことを特徴とする。
また、本発明は、前記の旋回式クランプシリンダにおいて、取付孔に嵌装したピン部材のピストンロッド側の端部は、ピストンロッドの軸線側と反対側が取付孔の内側開口部付近に位置し、ピストンロッドの軸線側が取付孔の内側開口部からピストンロッド側へ突出するように設け、ピン部材におけるピストンロッドの軸線側と反対側の外周面が略全長に亘って取付孔の内面で支承されるようにしたことを特徴とする。 Further, according to the present invention, in the above-described orbiting clamp cylinder, two sets of mounting holes, which are paired in the cylinder body, are provided symmetrically with respect to the cylinder center line, and one of the hole axes of the pair of mounting holes is a piston. It is characterized in that it is provided so as to pass through the right side of the axis of the piston rod toward the rod side and the other through the left side.
Further, in the swivel clamp cylinder according to the present invention, the piston rod side end of the pin member fitted in the mounting hole is located near the inner opening of the mounting hole on the side opposite to the axis of the piston rod. The piston rod is provided so that the axial line side of the piston rod protrudes from the inner opening of the mounting hole to the piston rod side, and the outer peripheral surface of the pin member opposite to the axial line side of the piston rod is supported by the inner surface of the mounting hole over substantially the entire length. It is characterized by doing so.

本発明では、旋回式クランプシリンダのガイド部材をピン部材で構成し、シリンダ本体に、孔軸線がピストンロッドの軸線と交差しないように設けた複数の取付孔にピン部材を夫々回動自在に嵌装しているので、ピン部材と旋回用案内溝との係合量は、ピン部材においてピストンロッドの軸線側がピストンロッドの軸線側の反対側より大きくなると共に、ピストンロッドの軸線側と反対側の外周面が略全長に亘って取付孔の内面で支承されるから、ピン部材によって過大な負荷や衝撃を受止めることが可能となり、クランプ、アンクランプ動作速度を上げたり、ピストンロッドに長いクランパを取り付けたりすることが容易に行なえる。
また、本発明では、複数の取付孔の少なくとも２つは、それらの孔軸線の一方がピストンロッド側に向かってピストンロッドの軸線の右側を通り、他方が左側を通るように設け、夫々の取付孔に嵌装したピン部材と旋回用案内溝との係合量が、ピストンロッドの軸線を中心とする回動方向において互いにピン部材の逆側で大きくなるようにしたので、ピストンロッドの両旋回方向への過大な負荷や衝撃を少なくとも１つのピン部材によって確実に受止めることができる。 In the present invention, the guide member of the swiveling clamp cylinder is constituted by a pin member, and the pin member is rotatably fitted in a plurality of mounting holes provided in the cylinder body so that the hole axis does not intersect the axis of the piston rod. Therefore, the amount of engagement between the pin member and the turning guide groove is such that the axial side of the piston rod in the pin member is larger than the opposite side to the axial side of the piston rod, and the opposite side to the axial side of the piston rod. Since the outer peripheral surface is supported by the inner surface of the mounting hole over almost the entire length, it is possible to receive excessive load and impact by the pin member, increase the clamping and unclamping operation speed, and install a long clamper on the piston rod It can be easily installed.
Further, in the present invention, at least two of the plurality of mounting holes are provided so that one of the hole axes passes through the right side of the piston rod axis toward the piston rod side, and the other passes through the left side. The amount of engagement between the pin member fitted in the hole and the turning guide groove is increased on the opposite side of the pin member in the rotation direction around the axis of the piston rod. An excessive load or impact in the direction can be reliably received by the at least one pin member.

また、本発明では、シリンダ本体に一対一組とする二組の取付孔をシリンダ中心線に対して対称に設け、これら一対の取付孔の孔軸線の一方がピストンロッド側に向かってピストンロッドの軸線の右側を通り、他方が左側を通るように設けたので、ピストンロッドの両旋回方向への過大な負荷や衝撃を、一対一組とする二組のピン部材によって安定的に受止めることになる。
また、本発明では、取付孔に嵌装したピン部材のピストンロッド側の端部は、ピストンロッドの軸線側と反対側が取付孔の内側開口部付近に位置し、ピストンロッドの軸線側が取付孔の内側開口部からピストンロッド側へ突出するように設け、ピン部材におけるピストンロッドの軸線側と反対側の外周面が略全長に亘って取付孔の内面で支承されるようにしたので、ピン部材に過大な負荷や衝撃が作用してもピン部材の破損が防止される。 In the present invention, the cylinder body is provided with two sets of mounting holes that are paired with each other symmetrically with respect to the cylinder center line, and one of the hole axes of the pair of mounting holes faces the piston rod side of the piston rod. Since it passes through the right side of the axis and the other passes through the left side, it is possible to stably receive excessive loads and impacts in both swiveling directions of the piston rod by two pairs of pin members. Become.
In the present invention, the piston rod side end of the pin member fitted in the mounting hole is located near the inner opening of the mounting hole on the side opposite to the piston rod axis side, and the piston rod axis side is the mounting hole side. Since it is provided so as to protrude from the inner opening to the piston rod side, the outer peripheral surface of the pin member opposite to the axis side of the piston rod is supported by the inner surface of the mounting hole over substantially the entire length. Even if an excessive load or impact is applied, the pin member is prevented from being damaged.

図１に示す旋回式クランプシリンダ１のシリンダ本体２は、シリンダ孔３ａを備えたシリンダチューブ３の両端部がヘッドカバー４とロッドカバー５で塞がれ、内部にシリンダ室６が構成されている。シリンダ室６には環状のピストン７が軸方向移動可能に嵌装されており、シリンダ室６をヘッド側シリンダ室８とロッド側シリンダ室９とに区画している。ピストン７に形成されたメネジ部１０にはピストンロッド１１の下端部が螺合されている。ピストンロッド１１の上端部はロッドカバー５から軸線前方に突出し、その上端部のテーパ面１１ａにクランパ１２がナット１３によって固定されている。ピストンロッド１１の外周面には、図５に示すように複数（４つ）の旋回用案内溝１４が設けられている。旋回用案内溝１４は、軸線方向に形成したカム溝１５と円周方向に形成した斜めのカム溝１６とから成り、カム溝１５の案内面１５ａとカム溝１６の案内面１６ａとが連続するようになっている。また、図４，５のように、隣り合うカム溝１５，１６のもう一方の側面１５ｂ，１６ｂ間に壁Ｔが形成されているが、本発明では側面１５ｂ，１６ｂがなくても構わないので壁Ｔを加工によって取り除いてもよい。各旋回用案内溝１４に係合させるガイド部材１９がシリンダ本体２のロッドカバー５に設けられている。   In the cylinder body 2 of the swivel clamp cylinder 1 shown in FIG. 1, both ends of a cylinder tube 3 having a cylinder hole 3a are closed by a head cover 4 and a rod cover 5, and a cylinder chamber 6 is formed inside. An annular piston 7 is fitted in the cylinder chamber 6 so as to be movable in the axial direction, and the cylinder chamber 6 is divided into a head side cylinder chamber 8 and a rod side cylinder chamber 9. The lower end portion of the piston rod 11 is screwed into the female screw portion 10 formed on the piston 7. The upper end portion of the piston rod 11 protrudes forward from the rod cover 5 in the axial direction, and the clamper 12 is fixed to the tapered surface 11 a of the upper end portion by a nut 13. A plurality of (four) turning guide grooves 14 are provided on the outer peripheral surface of the piston rod 11 as shown in FIG. The turning guide groove 14 includes a cam groove 15 formed in the axial direction and an oblique cam groove 16 formed in the circumferential direction, and the guide surface 15a of the cam groove 15 and the guide surface 16a of the cam groove 16 are continuous. It is like that. 4 and 5, the wall T is formed between the other side surfaces 15b and 16b of the adjacent cam grooves 15 and 16, but in the present invention, the side surfaces 15b and 16b may not be provided. The wall T may be removed by machining. A guide member 19 to be engaged with each turning guide groove 14 is provided on the rod cover 5 of the cylinder body 2.

前記ロッドカバー５は、外形がシリンダチューブ３の外形よりさらにチューブ半径方向の外側に広がった略矩形を成し、その下面５ａから前記シリンダ孔３ａに嵌入される嵌入軸部１７が突出している。嵌入軸部１７には、孔軸線ＨＬがピストンロッド１１の軸線ＣＬ（長手方向）と交差しないように設けた複数（４つ）の取付孔１８にガイド部材を構成するピン部材１９を夫々回動自在に嵌装している。図４では、ロッドカバー５の嵌入軸部１７に、一対一組とする二組の取付孔１８をシリンダ中心線（ピストンロッド１１の軸線ＣＬ）に対して対称に設け、それら一対の取付孔１８の孔軸線ＨＬの一方がピストンロッド１１側に向かってピストンロッド１１の軸線ＣＬの右側を通り、他方が左側を通るように設けてある。   The rod cover 5 has a substantially rectangular shape whose outer shape extends further outward in the tube radial direction than the outer shape of the cylinder tube 3, and a fitting shaft portion 17 that is fitted into the cylinder hole 3a protrudes from the lower surface 5a. In the insertion shaft portion 17, pin members 19 constituting a guide member are respectively rotated in a plurality (four) of mounting holes 18 provided so that the hole axis HL does not intersect the axis CL (longitudinal direction) of the piston rod 11. Fits freely. In FIG. 4, two sets of mounting holes 18, which are a pair, are provided in the fitting shaft portion 17 of the rod cover 5 symmetrically with respect to the cylinder center line (the axis CL of the piston rod 11). One of the hole axis lines HL is provided so as to pass the right side of the axis line CL of the piston rod 11 toward the piston rod 11 side and the other to the left side.

次に、取付孔１８に嵌装したピン部材１９のピストンロッド１１側の端部２０は、ピストンロッド１１の軸線ＣＬ側２０ａと反対側２０ｂが取付孔１８の内側開口部付近に位置し、ピストンロッド１１の軸線ＣＬ側２０ａが取付孔１８の内側開口部からピストンロッド１１側へ突出するように設け、ピン部材１９におけるピストンロッド１１の軸線ＣＬ側と反対側の外周面２１が略全長に亘って取付孔１８の内面で支承されるようにしてある。なお、複数の取付孔１８の少なくとも２つは、それらの孔軸線ＨＬの一方がピストンロッド１１側に向かってピストンロッド１１の軸線ＣＬの右側を通り、他方が左側を通るように設け、夫々の取付孔１８に嵌装したピン部材１９と旋回用案内溝１４との係合量Ｌが、ピストンロッド１１の軸線ＣＬを中心とする回動方向において互いにピン部材１９の逆側で大きくなるようにしてある。   Next, the end 20 on the piston rod 11 side of the pin member 19 fitted into the mounting hole 18 is located near the inner opening of the mounting hole 18 on the side 20b opposite to the axis CL side 20a of the piston rod 11. An axis CL side 20a of the rod 11 is provided so as to protrude from the inner opening of the mounting hole 18 to the piston rod 11 side, and an outer peripheral surface 21 of the pin member 19 opposite to the axis CL side of the piston rod 11 covers substantially the entire length. Thus, it is supported on the inner surface of the mounting hole 18. At least two of the plurality of mounting holes 18 are provided so that one of the hole axis lines HL passes the right side of the axis line CL of the piston rod 11 toward the piston rod 11 side and the other passes the left side. The engagement amount L between the pin member 19 fitted in the mounting hole 18 and the turning guide groove 14 is set to be larger on the opposite side of the pin member 19 in the rotation direction around the axis line CL of the piston rod 11. It is.

尚、ピン部材１９の配置としては、他に図６に示すものであってもよい。図６の（ａ）は、一対の取付孔１８の孔軸線ＨＬ、即ち一対のピン部材１９の軸線が略３０度を成すように設け、図６の（ｂ）は、一対の取付孔１８の孔軸線ＨＬ、即ち一対のピン部材１９の軸線が略９０度を成すように設けてある。図６の（ｃ）は、一対の取付孔１８の孔軸線ＨＬ、即ち一対のピン部材１９の軸線が略平行になるように設けてある。また、本実施形態ではピン部材１９を４つ配置してあるが、図７に示すように、ピン部材１９が２つ以上配置してあればよい。ロッドカバー５の一側面には一対の給排ポート２２が設けられている。一方の給排ポート２２ａは、ロッドカバー５の流体通路２３を介してシリンダチューブ３の長手方向に設けた連通路２４に連通している。他方の給排ポート２２ｂは、ロッドカバー５の別の流体通路２５を介してロッド側シリンダ室９に連通している。   In addition, as arrangement | positioning of the pin member 19, you may show in FIG. 6A is provided so that the hole axis HL of the pair of mounting holes 18, that is, the axis of the pair of pin members 19 forms approximately 30 degrees, and FIG. The hole axis HL, that is, the axis of the pair of pin members 19 is provided so as to form approximately 90 degrees. 6C, the hole axis HL of the pair of mounting holes 18, that is, the axis of the pair of pin members 19 is provided so as to be substantially parallel. In the present embodiment, four pin members 19 are arranged. However, as shown in FIG. 7, two or more pin members 19 may be arranged. A pair of supply / discharge ports 22 are provided on one side surface of the rod cover 5. One supply / discharge port 22 a communicates with a communication passage 24 provided in the longitudinal direction of the cylinder tube 3 via a fluid passage 23 of the rod cover 5. The other supply / discharge port 22 b communicates with the rod side cylinder chamber 9 via another fluid passage 25 of the rod cover 5.

上記旋回式クランプシリンダ１の動作について説明する。図２に示すクランパ１２がアンクランプ位置Ｂの状態において、他方の給排ポート２２ｂから流体通路２５を介してロッド側シリンダ室９に圧流体が供給されると、ピストン７が軸線下方に移動すると共に、ピン部材１９に係合した旋回用案内溝１４に沿ってピストンロッド１１が軸線下方に移動しつつ９０度旋回し、その後、その旋回位置を保ってワークＷに向けて降下してクランプ位置ＡでワークＷをクランプするようになっている。また、図１に示すクランパ１２がクランプ位置Ａの状態において、一方の給排ポート２２ａから流体通路２３、連通路２４を介してヘッド側シリンダ室８に圧流体が供給されると、ピストン７が軸線上方に移動すると共に、ピストンロッド１１が前記と逆に動作することで、クランパ１２がアンクランプ位置Ｂの状態となる。   The operation of the swing type clamp cylinder 1 will be described. In the state where the clamper 12 shown in FIG. 2 is in the unclamping position B, when pressurized fluid is supplied from the other supply / discharge port 22b to the rod side cylinder chamber 9 via the fluid passage 25, the piston 7 moves downward along the axis. At the same time, the piston rod 11 turns 90 degrees while moving downward along the axis along the turning guide groove 14 engaged with the pin member 19, and then descends toward the workpiece W while maintaining the turning position. The workpiece W is clamped by A. When the pressure fluid is supplied from the one supply / discharge port 22a to the head side cylinder chamber 8 via the fluid passage 23 and the communication passage 24 in the state where the clamper 12 shown in FIG. The clamper 12 is in the unclamping position B by moving upward along the axis and moving the piston rod 11 in the opposite direction.

旋回式クランプシリンダ１では、ワークＷのクランプ、アンクランプ動作速度を上げるためにピストン７の移動速度を速めたり、ピストンロッド１１に長いクランパ１２を取り付けることでピストンロッド１１にかかる慣性モーメントが増大した場合には、ピン部材１９と旋回用案内溝１４に過大な負荷や衝撃がかかる。しかし、本発明のように、ロッドカバー５に、ピストンロッド１１の軸線ＣＬと交差しないように設けた複数の取付孔１８にピン部材１９を夫々回動自在に嵌装しているので、ピン部材１９と旋回用案内溝１４との係合量Ｌは、ピン部材１９におけるピストンロッド１１の軸線ＣＬ側がピストンロッド１１の軸線ＣＬ側と反対側より大きくなると共に、ピストンロッド１１の軸線ＣＬ側と反対側の外周面２１が略全長に亘って取付孔１８の内面で支承されるから、過大な負荷や衝撃をピン部材１９で受止めることができ、クランプ、アンクランプ動作速度を上げたり、ピストンロッド１１に長いクランパ１２を取り付けたりすることが容易にできる。また、旋回用案内溝１４に係合したピン部材１９が回動しない場合でも、従来のように、旋回用案内溝１４に線当たりのピン部材１９と旋回用案内溝１４との間には大きな摩擦力が生じることはない。   In the revolving clamp cylinder 1, the moment of inertia applied to the piston rod 11 is increased by increasing the moving speed of the piston 7 in order to increase the clamping / unclamping operation speed of the workpiece W or by attaching a long clamper 12 to the piston rod 11. In this case, an excessive load or impact is applied to the pin member 19 and the turning guide groove 14. However, as in the present invention, the pin member 19 is rotatably fitted in the plurality of mounting holes 18 provided in the rod cover 5 so as not to intersect the axis CL of the piston rod 11. 19 and the pivot guide groove 14 have an engagement amount L that is larger on the axis CL side of the piston rod 11 in the pin member 19 than on the side opposite to the axis CL side of the piston rod 11 and opposite to the axis CL side of the piston rod 11. Since the outer peripheral surface 21 on the side is supported by the inner surface of the mounting hole 18 over substantially the entire length, an excessive load or impact can be received by the pin member 19, and the clamping and unclamping operation speed can be increased, or the piston rod It is possible to easily attach a long clamper 12 to 11. Further, even when the pin member 19 engaged with the turning guide groove 14 does not rotate, the turning guide groove 14 has a large gap between the pin member 19 and the turning guide groove 14 per line as in the prior art. There is no frictional force.

上記複数の取付孔１８の少なくとも２つは、それらの孔軸線ＨＬの一方がピストンロッド１１側に向かってピストンロッド１１の軸線ＣＬの右側を通り、他方が左側を通るように設け、夫々の取付孔１８に嵌装したピン部材１９と旋回用案内溝１４との係合量Ｌが、ピストンロッド１１の軸線ＣＬを中心とする回動方向において互いにピン部材１９の逆側で大きくなるようにしたので、ピストンロッド１１の両旋回方向への過大な負荷や衝撃を、少なくとも１つのピン部材１９によって確実に受止めることができる。また、ロッドカバー５に、一対一組とする二組の取付孔１８をシリンダ中心線（ピストンロッド１１の軸線ＣＬ）に対して対称に設け、これら一対の取付孔１８の孔軸線ＨＬの一方がピストンロッド１１側に向かってピストンロッド１１の軸線ＣＬの右側を通り、他方が左側を通るように設けたので、ピストンロッド１１の両旋回方向への過大な負荷や衝撃を一対一組とする二組のピン部材１９によって安定的に受止めることができる。更に、取付孔１８に嵌装したピン部材１９のピストンロッド１１側の端部２０は、ピストンロッド１１の軸線ＣＬ側２０ａと反対側２０ｂが取付孔１８の内側開口部付近に位置し、ピストンロッド１１の軸線ＣＬ側２０ａが取付孔１８の内側開口部からピストンロッド１１側へ突出するように設けたので、ピン部材１９におけるピストンロッド１１の軸線ＣＬ側と反対側の外周面２１が略全長に亘って取付孔１８の内面で支承されるから、ピン部材１９に過大な負荷や衝撃が作用してもピン部材１９が破損することを防止できる。   At least two of the plurality of mounting holes 18 are provided such that one of the hole axis lines HL passes the right side of the axis line CL of the piston rod 11 toward the piston rod 11 side, and the other passes the left side. The engagement amount L between the pin member 19 fitted in the hole 18 and the turning guide groove 14 is made larger on the opposite side of the pin member 19 in the rotation direction around the axis line CL of the piston rod 11. Therefore, an excessive load or impact in both turning directions of the piston rod 11 can be reliably received by the at least one pin member 19. The rod cover 5 is provided with two pairs of mounting holes 18 that are paired with each other symmetrically with respect to the cylinder center line (the axis CL of the piston rod 11), and one of the hole axes HL of the pair of mounting holes 18 is Since the piston rod 11 is provided so that it passes through the right side of the axis CL of the piston rod 11 and the other passes through the left side, excessive loads and impacts in both turning directions of the piston rod 11 are made into one pair. The pair of pin members 19 can be stably received. Further, the end 20 on the piston rod 11 side of the pin member 19 fitted in the mounting hole 18 is located near the inner opening of the mounting hole 18 on the opposite side 20b of the piston rod 11 on the axis line CL side 20a. 11 is provided so that the axis CL side 20a protrudes from the inner opening of the mounting hole 18 to the piston rod 11 side, so that the outer peripheral surface 21 of the pin member 19 opposite to the axis CL side of the piston rod 11 has a substantially full length. Since it is supported by the inner surface of the mounting hole 18, the pin member 19 can be prevented from being damaged even if an excessive load or impact is applied to the pin member 19.

本発明のクランプ状態である旋回式クランプシリンダの縦断面図である。It is a longitudinal cross-sectional view of the turning type clamp cylinder which is the clamp state of this invention. アンクランプ状態である旋回式クランプシリンダの縦断面図である。It is a longitudinal cross-sectional view of the revolving clamp cylinder which is in an unclamped state. 図１の平面図である。It is a top view of FIG. 図１のＩＶ−ＩＶ線断面図である。It is the IV-IV sectional view taken on the line of FIG. ピストンロッドの外周面展開図である。It is an outer peripheral surface development view of a piston rod. ピン部材の別の配置形態を示す図である。It is a figure which shows another arrangement | positioning form of a pin member. ピン部材の他の配置形態を示す図である。It is a figure which shows the other arrangement | positioning form of a pin member.

符号の説明Explanation of symbols

１ 旋回式クランプシリンダ
２ シリンダ本体
７ ピストン
１１ ピストンロッド
１２ クランパ
１４ 旋回用案内溝
１８ 取付孔
１９ ピン部材
２０ 端部
２０ａ 軸線側
２０ｂ 反対側
２１ 外周面
Ｌ 係合量
ＣＬ 軸線
ＨＬ 孔軸線
Ｗ ワーク DESCRIPTION OF SYMBOLS 1 Revolving clamp cylinder 2 Cylinder main body 7 Piston 11 Piston rod 12 Clamper 14 Turning guide groove 18 Mounting hole 19 Pin member 20 End 20a Axis side 20b Opposite side 21 Outer peripheral surface L Engagement amount CL Axis HL Hole Axis W Workpiece

Claims (4)

ピストンを内蔵するシリンダ本体の一端部からピストンに連結したピストンロッドが突出し、シリンダ本体に設けた複数のガイド部材とピストンロッドに設けた複数の旋回用案内溝とを係合させて、ピストンの移動によりピストンロッドが旋回し、かつ、軸線方向に移動して、ピストンロッドに設けたクランパがワークをクランプするようにした旋回式クランプシリンダにおいて、前記ガイド部材をピン部材で構成し、シリンダ本体に、孔軸線がピストンロッドの軸線と交差しないように設けた複数の取付孔にピン部材を夫々回動自在に嵌装して成ることを特徴とする旋回式クランプシリンダ。 The piston rod connected to the piston protrudes from one end of the cylinder body containing the piston, and the piston moves by engaging a plurality of guide members provided on the cylinder body and a plurality of turning guide grooves provided on the piston rod. In the revolving clamp cylinder in which the piston rod revolves and moves in the axial direction so that the clamper provided on the piston rod clamps the workpiece, the guide member is constituted by a pin member, A swiveling clamp cylinder characterized in that a pin member is rotatably fitted in a plurality of mounting holes provided so that the hole axis does not intersect the axis of the piston rod. 複数の取付孔の少なくとも２つは、それらの孔軸線の一方がピストンロッド側に向かってピストンロッドの軸線の右側を通り、他方が左側を通るように設け、夫々の取付孔に嵌装したピン部材と旋回用案内溝との係合量が、ピストンロッドの軸線を中心とする回動方向において互いにピン部材の逆側で大きくなるようにしたことを特徴とする請求項１記載の旋回式クランプシリンダ。 At least two of the plurality of mounting holes are provided so that one of the hole axis lines passes through the right side of the axis of the piston rod toward the piston rod side and the other passes through the left side, and the pins are fitted in the mounting holes. The swivel clamp according to claim 1, wherein the amount of engagement between the member and the swivel guide groove is increased on the opposite sides of the pin member in the rotation direction about the axis of the piston rod. Cylinder. シリンダ本体に一対一組とする二組の取付孔をシリンダ中心線に対して対称に設け、これら一対の取付孔の孔軸線の一方がピストンロッド側に向かってピストンロッドの軸線の右側を通り、他方が左側を通るように設けたことを特徴とする請求項１または２に記載の旋回式クランプシリンダ。 Two pairs of mounting holes, which are one-to-one in the cylinder body, are provided symmetrically with respect to the cylinder center line, and one of the hole axes of the pair of mounting holes passes the right side of the piston rod axis toward the piston rod side, The pivot clamp cylinder according to claim 1 or 2, wherein the other is provided so as to pass through the left side. 取付孔に嵌装したピン部材のピストンロッド側の端部は、ピストンロッドの軸線側と反対側が取付孔の内側開口部付近に位置し、ピストンロッドの軸線側が取付孔の内側開口部からピストンロッド側へ突出するように設け、ピン部材におけるピストンロッドの軸線側と反対側の外周面が略全長に亘って取付孔の内面で支承されるようにしたことを特徴とする請求項１乃至３の何れか１項に記載の旋回式クランプシリンダ。 The piston rod side end of the pin member fitted in the mounting hole is located near the inner opening of the mounting hole on the side opposite to the piston rod axis side, and the piston rod axis side extends from the inner opening of the mounting hole to the piston rod. The outer peripheral surface of the pin member opposite to the axis side of the piston rod is supported by the inner surface of the mounting hole over substantially the entire length. The swivel clamp cylinder according to any one of the above.
JP2005281111A 2005-09-28 2005-09-28 Rotating clamp cylinder Active JP4671032B2 (en)

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KR20060093980A KR100809552B1 (en) 2005-09-28 2006-09-27 Rotary Clamp Cylinder
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CN1940311A (en) 2007-04-04
CN100528474C (en) 2009-08-19
TWI313322B (en) 2009-08-11
KR100809552B1 (en) 2008-03-04
JP4671032B2 (en) 2011-04-13
TW200718871A (en) 2007-05-16

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