JPH0442021Y2 - - Google Patents
Info
- Publication number
- JPH0442021Y2 JPH0442021Y2 JP1987102008U JP10200887U JPH0442021Y2 JP H0442021 Y2 JPH0442021 Y2 JP H0442021Y2 JP 1987102008 U JP1987102008 U JP 1987102008U JP 10200887 U JP10200887 U JP 10200887U JP H0442021 Y2 JPH0442021 Y2 JP H0442021Y2
- Authority
- JP
- Japan
- Prior art keywords
- clamp
- housing
- clamp member
- wedge
- reaction force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000009826 distribution Methods 0.000 description 6
- 230000005489 elastic deformation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はクランプ装置に関し、プレス機械や射
出成形機等における金型などを固定するのに用い
るクランプ装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a clamp device, and more particularly, to a clamp device used for fixing a mold or the like in a press machine, an injection molding machine, or the like.
上記金型等をクランプするクランプ装置とし
て、種々の型式のものが実用化されているが、本
願出願人は第５図・第６図に示すような構造のク
ランプ装置１０１を実用化している。
Various types of clamping devices have been put into practical use as clamping devices for clamping the molds, etc., and the applicant of the present application has put into practical use a clamping device 101 having a structure as shown in FIGS. 5 and 6.
このクランプ装置１０１の構造について説明す
るとハウジング１０２の前部の収容部１０２ｃに
クランプ部材１０５を配設し、その支点部１０５
ｃをピン部材１１０に枢支し、力点部１０５ａを
クランプシリンダ１０４のピストンロツド１０３
ｂ先端の楔状締付部１０３ｃで押圧することによ
り、クランプ部材１０５の作用点部１０５ｂで金
型等をクランプするように構成し、往動油室１０
８の油圧リーク時にはピストン部材１０３前方へ
付勢するバツクアツプスプリング１０７の弾性付
勢力と、楔状締付部１０３ｃの上下両面に作用す
る摩擦力とでクランプ力が低下しないように構成
してある。 To explain the structure of this clamp device 101, a clamp member 105 is disposed in a housing portion 102c at the front of the housing 102, and a fulcrum portion 105 of the clamp member 105 is provided.
c is pivoted to the pin member 110, and the force point 105a is connected to the piston rod 103 of the clamp cylinder 104.
By pressing with the wedge-shaped tightening part 103c at the tip of b, the mold etc. is clamped at the action point part 105b of the clamp member 105, and the forward oil chamber 10
8, the clamping force is not reduced by the elastic biasing force of the back-up spring 107 that biases the piston member 103 forward and the frictional force acting on both the upper and lower surfaces of the wedge-shaped clamping portion 103c.
上部締付部１０３ｃの上半部は、第６図に示す
ようにピストンロツド１０３ｂと同様の円筒面に
形成されていて、締付部１０３ｃの上面側の一部
分でハウジング１０２の円筒面状の反力支持部１
０２ｆに接触するようになつている。 The upper half of the upper tightening part 103c is formed into a cylindrical surface similar to that of the piston rod 103b, as shown in FIG. Support part 1
02f.
上記クランプ装置１０１では、締付部１０３ｃ
の上面側が円筒面状に形成され、反力支持部１０
２ｆも円筒面状になつているので、クランプ時締
付部１０３ｃと反力支持部１０２ｆ間に作用する
面圧は第６図の面圧分布Ａのように締付部１０３
ｃの全幅に亙つて均一化されず、幅方向中央部で
著しく高い面圧となる。
In the clamping device 101, the tightening portion 103c
The upper surface side of the reaction force support part 10 is formed into a cylindrical shape.
Since 2f also has a cylindrical surface shape, the surface pressure acting between the tightening portion 103c and the reaction force support portion 102f during clamping is as shown in the surface pressure distribution A in FIG.
The surface pressure is not uniform over the entire width of c, and the surface pressure is extremely high at the center in the width direction.
更に、締付部１０３ｃはピストンロツド１０３
ｂの先端部に一体的に形成されているので、締付
部１０３ｃの弾性変形により締付部１０３ｃと反
力支持部１０２ｆ間に作用する面圧は第５図の面
圧分布Ｂに示すように長さ方向にも等分布化され
ず局部的に著しく高い面圧となる。 Further, the tightening portion 103c is connected to the piston rod 103.
Since it is integrally formed at the tip of the clamping part 103c, the surface pressure acting between the clamping part 103c and the reaction force support part 102f due to the elastic deformation of the clamping part 103c is as shown in the surface pressure distribution B in FIG. The pressure is not evenly distributed in the length direction, resulting in significantly high surface pressure locally.
上記のように、面圧分布が幅方向にも長さ方向
にも等分布化されず局的に高い面圧となるので、
その高面圧部の弾性変形（但し、圧縮変形も起
る）が大きくなること及び締付部１０３ｃと反力
支持部１０２ｆ間に作用する摩擦力も大きくなる
ことなどの理由により、クランプ解除の際に復動
油室１０９に油圧を供給してもピストン部材１０
３が後方へ解除作動しなくなるという問題があ
る。 As mentioned above, the surface pressure distribution is not uniformly distributed in both the width and length directions, resulting in locally high surface pressure.
When the clamp is released, the elastic deformation (however, compressive deformation also occurs) of the high surface pressure part increases, and the frictional force acting between the clamping part 103c and the reaction force support part 102f also increases. Even if hydraulic pressure is supplied to the reciprocating oil chamber 109, the piston member 10
There is a problem that 3 does not release backward.
更に、上記のようなクランプ解除不能が起らな
いようにする為には、反力支持部１０２ｆの付近
のハウジング１０２の壁厚を大きくして剛性を高
くしなければならないので、クランプ装置が大型
化し重くなる。 Furthermore, in order to prevent the above-described inability to release the clamp from occurring, the wall thickness of the housing 102 in the vicinity of the reaction force support portion 102f must be increased to increase the rigidity, which requires a large clamp device. It becomes heavier and heavier.
しかも、復動油室１０９の油圧力を増大させる
ことも必要となり、油圧を高めるか或いはピスト
ンロツドを小径化するなどの対策も必要となる。 Moreover, it is also necessary to increase the hydraulic pressure in the reciprocating oil chamber 109, and measures such as increasing the hydraulic pressure or reducing the diameter of the piston rod are also required.
更に、前記クランプ装置では、クランプ状態に
おいて油圧のリークが発生すると、クランプ力が
低下して金型やクランプ装置が破損するという欠
点もあり、また、クランプ解除時にクランプ部材
がクランプ前の原位置に復帰しないため、人手に
よりクランプ部材を退入させる必要があるという
欠点もある。 Furthermore, the clamping device has the disadvantage that if hydraulic leakage occurs in the clamped state, the clamping force decreases and the mold or clamping device is damaged.Furthermore, when the clamp is released, the clamp member returns to its original position before clamping. There is also a drawback that the clamp member must be manually retracted because it does not return.
本考案に係るクランプ装置は、ハウジングと、
ハウジングの前側部分に枢支ピンを介して揺動自
在に枢着されたクランプ部材と、クランプ部材を
クランプ駆動するクランプシリンダとを備えたク
ランプ装置において、上記クランプ部材の後端部
の下部を枢支ピンを介してハウジングに枢着する
とともに、クランプ部材の上端部に緩傾斜湾曲面
状の力点部をまたクランプ部材の前端下部に作用
点部を夫々形成し、上記クランプシリンダのピス
トンロツドの先端部に、クランプ状態において上
記力点部とこれに対向するハウジングの反力支持
部間に嵌入される楔状の締付部材を一体又は別体
に設け、上記クランプシリンダの往動油室内にク
ランプ状態においてピストンロツドをバツクアツ
プするバツクアツプスプリングを設け、上記ハウ
ジングの下部内に、クランプ部材を退入方向へ付
勢するリトラクタ機構を設け、上記締付部材と反
力支持部の接触面を平面状に形成したものであ
る。
The clamp device according to the present invention includes a housing;
In a clamp device including a clamp member pivotally attached to the front side of the housing via a pivot pin, and a clamp cylinder that clamps and drives the clamp member, the lower part of the rear end of the clamp member is pivoted. The clamp member is pivotally connected to the housing via a support pin, and has a force point portion shaped like a gently sloped curved surface at the upper end of the clamp member, and an action point portion at the lower front end of the clamp member, and the tip of the piston rod of the clamp cylinder. A wedge-shaped tightening member is provided integrally or separately that is fitted between the force point part and the reaction force support part of the housing facing the force point part in the clamped state, and the piston rod is inserted into the forward oil chamber of the clamp cylinder in the clamped state. A back-up spring is provided to back up the clamp member, a retractor mechanism is provided in the lower part of the housing to bias the clamp member in the retracting direction, and the contact surface between the tightening member and the reaction force support portion is formed into a flat shape. It is.
本考案に係るクランプ装置においては、クラン
プシリンダを駆動させてそのピストンロツドを伸
長させ、楔状の締付部材をクランプ部材の力点部
とハウジングの反力支持部間に押入させると、ク
ランプ部材が前方へ揺動してクランプ状態とな
る。上記楔状の締付部材と反力支持部との接触面
が平面状に形成されているので、上記両者間の面
圧が等分布化されて、反力支持部の局部的弾性変
化も大幅に緩和され、且つ締付部材と反力支持部
間に作用する摩擦力も小さくなるので、クランプ
解除に要する解除力が小さくなる。
In the clamp device according to the present invention, when the clamp cylinder is driven to extend its piston rod and the wedge-shaped tightening member is pushed between the force point part of the clamp member and the reaction force support part of the housing, the clamp member moves forward. It swings into a clamped state. Since the contact surface between the wedge-shaped tightening member and the reaction force support section is formed into a flat surface, the surface pressure between the two is evenly distributed, and local elastic changes in the reaction force support section are also significantly reduced. Since the frictional force acting between the clamping member and the reaction force supporting portion is reduced, the release force required to release the clamp is reduced.
特に、締付部材をピストンロツドと別体に構成
する場合には、前記面圧の等分布化が一層促進さ
れるため、一層好ましい。 In particular, it is more preferable to configure the tightening member separately from the piston rod, since the uniform distribution of the surface pressure is further promoted.
一方、クランプ状態において、油圧のリークが
発生しても、ピストンロツドがバツクアツプスプ
リングでバツクアツプされているため、締付部材
が弛み出すことがなく、クランプ状態が維持され
る。 On the other hand, even if oil pressure leaks in the clamped state, the piston rod is backed up by the back-up spring, so the tightening member does not loosen, and the clamped state is maintained.
しかも、クランプ解除時に、クランプシリンダ
のピストンロツドを退入させると、タトラクタ機
構によりクランプ部材が退入方向へ自動的に引き
込まれるため、人手によりクランプ部材を退入さ
せる必要がない。 Furthermore, when the piston rod of the clamp cylinder is retracted when the clamp is released, the clamp member is automatically retracted in the retracting direction by the tatractor mechanism, so there is no need to manually retract the clamp member.
本考案に係るクランプ装置によれば、以上説明
したように、締付部材と反力支持部との接触面を
平面状に形成するという簡単な構成により、両者
間の面圧を等分布化し、クランプ解除に要する解
除力を小さくし、ハウジングを軽量化することが
出来る。
According to the clamping device according to the present invention, as explained above, the contact surface between the clamping member and the reaction force support portion is formed into a flat shape, which is a simple structure, so that the surface pressure between the two is evenly distributed. The release force required to release the clamp can be reduced, and the weight of the housing can be reduced.
また、クランプ油圧のリーク時にもバツクアツ
プスプリングによりクランプ状態を維持でき、ま
た、クランプ解除時にはクランプ部材を自動的に
退入させることも出来る。 Furthermore, even when the clamp hydraulic pressure leaks, the clamped state can be maintained by the back-up spring, and the clamp member can also be automatically retracted when the clamp is released.
以下、本発明の実施例を図面に基いて説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.
第１図は、クランプ装置１全体の機械的構造を
示したもので、このクランプ装置１は、直方体状
のハウジングと、ハウジング２の前部の収容部２
ｃに配設されたクランプ部材５を油圧力でクラン
プ駆動するクランプシリンダ４と、ハウジング２
の下部内に設けられクランプ開放時にクランプ部
材５を収容部２ｃ内へ引き込むリトラクタ機構６
とを備えている。 FIG. 1 shows the mechanical structure of the entire clamping device 1. This clamping device 1 consists of a rectangular parallelepiped housing and a housing section 2 at the front of the housing 2.
a clamp cylinder 4 that clamps and drives a clamp member 5 disposed at c with hydraulic pressure; and a housing 2.
A retractor mechanism 6 that is provided in the lower part of the retractor mechanism 6 that pulls the clamp member 5 into the housing part 2c when the clamp is opened.
It is equipped with
上記ハウジング２の前部下部内にはクランプ部
材５を収容するための収容部２ｃが形成され、ハ
ウジング２の上半部の中央部には、クランプシリ
ンダ４のシリンダ部２ａが前後方向に向けて形成
され、その後端はハウジング後壁部２ｂで封止さ
れている。さらに、上記クランプ部材５後方にお
いて、シリンダ部２ａの下方のハウジング２内に
は、リトラクタ機構６を配設するリンク収容部２
ｄとスプリング収容部２ｅが形成されている。 An accommodating portion 2c for accommodating the clamp member 5 is formed in the lower front portion of the housing 2, and a cylinder portion 2a of the clamp cylinder 4 is formed in the center of the upper half of the housing 2 so as to face in the front-rear direction. The rear end is sealed with the housing rear wall portion 2b. Furthermore, behind the clamp member 5, in the housing 2 below the cylinder portion 2a, there is a link housing portion 2 in which the retractor mechanism 6 is disposed.
d and a spring accommodating portion 2e are formed.
上記クランプ部材５は、その後端側下部の支点
部５ｃにおいて、収容部２ｃの側壁部に枢支ピン
１０を介して揺動自在に枢支され、またクランプ
部材５の前端底面部には、平面状の作用点部５ｄ
が形成され、クランプ部材５の上端部には、クラ
ンプ時前方上りに緩やかに傾斜する緩湾曲面状の
力点部５ａが形成され、作用点部５ｂの力点部５
ａを結ぶ上面側前方端部は、揺動時にハウジング
２各部等と接触しないような円弧状の曲面に形成
されている。 The clamp member 5 is swingably supported on the side wall of the accommodating portion 2c via a pivot pin 10 at a fulcrum portion 5c at the lower rear end side, and a flat surface is provided on the bottom surface of the front end of the clamp member 5. Point of action portion 5d shaped like
is formed, and the upper end of the clamp member 5 is formed with a force point portion 5a in the form of a gently curved surface that is gently inclined forwardly upward during clamping, and a force point portion 5a of the force point portion 5b is formed at the upper end of the clamp member 5.
The front end on the upper surface side connecting points a is formed into an arcuate curved surface so as not to come into contact with other parts of the housing 2 during rocking.
前記ハウジング２のシリンダ部２ａには、油圧
によつて前後方向に往復駆動されるピストン部材
３が装着されていて、そのピストン３ａの後側に
は往動油室８がまた前側には復動油室９が形成さ
れ、ピストン３ａから一体的に前方へ延びたピス
トンロツド３ｂの先端部には、楔状締付部３ｃが
前方に突出するように一体形成されている。上記
楔状締付部３ｃは、ハウジング２の反力支持部２
ｆに等分布面圧が加わるようにするために、その
上面部を水平な平面に形成され、またその下面部
は前方上りの傾斜平面をなしている。さらに、締
付部３ｃの上面部は、これと平面接触で摺接する
ようにした水平平面状の反力支持部２ｆに、また
その下面部はクランプ部材５の緩湾曲面状の力点
部５ａに夫々当接するようになつている。 A piston member 3 that is reciprocated in the front-rear direction by hydraulic pressure is attached to the cylinder portion 2a of the housing 2, and a forward oil chamber 8 is provided on the rear side of the piston 3a, and a return oil chamber 8 is provided on the front side of the piston 3a. An oil chamber 9 is formed, and a wedge-shaped tightening portion 3c is integrally formed at the tip of a piston rod 3b that extends forward integrally from the piston 3a so as to project forward. The wedge-shaped tightening portion 3c is the reaction force support portion 2 of the housing 2.
In order to apply evenly distributed surface pressure to f, its upper surface is formed into a horizontal plane, and its lower surface is formed into a forwardly upwardly inclined plane. Furthermore, the upper surface of the tightening portion 3c is in sliding contact with the horizontal plane reaction force support portion 2f, and the lower surface thereof is in contact with the force point portion 5a of the clamping member 5 in the form of a gently curved surface. They are now in contact with each other.
上記ピストン３ａと、シリンダ部２ａによつて
形成された往動油室８と復動油室９は夫々ハウジ
ング２に形成された油孔８ａ・９ａを介して外部
の油圧供給装置に接続される。 The forward oil chamber 8 and backward oil chamber 9 formed by the piston 3a and the cylinder portion 2a are connected to an external hydraulic pressure supply device through oil holes 8a and 9a formed in the housing 2, respectively. .
上記ピストン部材３には、ピストン３ａの後端
からピストンロツド３ｂの前端近くに亙つてバネ
収容穴７ａが同心状に凹設され、またハウジング
後壁部２ｂの内面側にもバネ収容穴７ａに対応す
るバネ受け穴７ｂが形成され、バネ収容穴７ａに
装着された強力な圧縮コイルバネからなるバツク
アツプスプリング７の後端部はバネ受け穴７ｂで
受けとめられている。 A spring housing hole 7a is concentrically formed in the piston member 3 from the rear end of the piston 3a to near the front end of the piston rod 3b, and also corresponds to the spring housing hole 7a on the inner surface of the housing rear wall 2b. A spring receiving hole 7b is formed in the spring receiving hole 7b, and the rear end portion of a back-up spring 7 made of a strong compression coil spring mounted in the spring receiving hole 7a is received in the spring receiving hole 7b.
一方、上記リンク収容部２ｄとスプリング収容
部２ｅには、リンク６ａとロツド６ｂとリトラク
タスプリング６ｃとバネ係止具６ｄとから構成さ
れたリトラクタ機構６が設けられている。 On the other hand, the link accommodating portion 2d and the spring accommodating portion 2e are provided with a retractor mechanism 6 composed of a link 6a, a rod 6b, a retractor spring 6c, and a spring locking device 6d.
リンク６ａの前端部は、クランプ部材５の支点
部５ｃの上方の部分に回動自在に連結され、その
後端ロツド６ｂの前端部にリンク収容部２ｄ内で
同様に連結されている。このロツド６ｂはリンク
収容部２ｄからバネ受部６ｅを挿通し後方のスプ
リング収容部２ｅへ水平に延びていて、その後端
側部分にはスプリング収容部２ｅ内に、前後方向
に摺動可能に配設されたバネ係止具６ｄが螺着さ
れ、バネ受部６ｅとバネ係止具６ｄとの間にはロ
ツド６ｂに圧縮コイルバネからなるリトラクタス
プリング６ｃが外装されている。 The front end of the link 6a is rotatably connected to a portion above the fulcrum 5c of the clamp member 5, and is similarly connected to the front end of the rear end rod 6b within the link housing 2d. The rod 6b extends horizontally from the link accommodating part 2d through the spring accommodating part 6e to the rear spring accommodating part 2e, and is disposed on the rear end side in the spring accommodating part 2e so as to be slidable in the front and rear direction. A spring locking device 6d provided therein is screwed onto the rod 6b, and a retractor spring 6c made of a compression coil spring is mounted on the rod 6b between the spring receiving portion 6e and the spring locking device 6d.
次に、以上説明したクランプ装置１の作動につ
いて説明する。 Next, the operation of the clamp device 1 explained above will be explained.
クランプ装置１でクランプ対象物である金型等
をクランプしていない状態では、往動油室８の油
圧が排出されるとともに復動油室９内へ油圧が供
給されるので、ピストン部材３は第１図に仮想線
で図示のように後方限界まで退入する。この退入
動作と平行してクランプ部材５はリトラクター機
構６で後方へ引き付けられるのでクランプ部材５
は仮想線で図示のように後方へ揺動して収容部２
ｃ内へ収容され、その作用点部５ｂがハウジング
２の前端外へ突出しなくなる。 When the clamping device 1 is not clamping the object to be clamped, such as a mold, the hydraulic pressure in the forward oil chamber 8 is discharged and the hydraulic pressure is supplied to the backward oil chamber 9, so that the piston member 3 is Retract to the rear limit as shown by the imaginary line in FIG. In parallel with this retraction movement, the clamp member 5 is pulled rearward by the retractor mechanism 6, so the clamp member 5
is swung backwards as shown by the imaginary line, and the accommodating part 2
c, and its action point portion 5b does not protrude outside the front end of the housing 2.
上記状態から金型等を作用点部５ｂでクランプ
する場合、復動油室９の圧油を排出しつつ往動油
室８に圧油を供給していくと、ピストン部材３が
前方へ移動して楔状締付部３ｃによりクランプ部
材５の力点部５ａが前方へ押動されるので、クラ
ンプ部材５が前方へ揺動し作用点部５ｂが金型に
接触し始め、引き続いて楔状締付部３ｃが力点部
５ａと反力支持部２ｆとの間に押入されていくの
で、その楔効果により力点部５ａは強力に下方に
締め付けられ、作用点部５ｂには下向きの強力な
クランプ力が発生する。 When clamping a mold or the like at the application point 5b from the above state, if pressure oil is supplied to the forward oil chamber 8 while draining the pressure oil from the backward oil chamber 9, the piston member 3 moves forward. Then, the force point part 5a of the clamp member 5 is pushed forward by the wedge-shaped tightening part 3c, so the clamp member 5 swings forward and the force point part 5b starts to come into contact with the mold, and then the wedge-shaped tightening part 5a starts to come into contact with the mold. As the portion 3c is pushed between the force point portion 5a and the reaction force support portion 2f, the force point portion 5a is strongly clamped downward due to the wedge effect, and a strong downward clamping force is applied to the force point portion 5b. Occur.
上記クランプ状態において、油圧のリークによ
り往動油室８の油圧が低下しても、力点部５ａと
楔状締付部３ｃの下面及び楔状締付部３ｃの上面
と反力支持部２ｆ間には大きな摩擦力が作用し、
またピストン部材３はバツクアツプススリング７
により前方へ強力に付勢されているので、ピスト
ン部材３が後退することはなくクランプ力が保持
されることになる。 In the above-mentioned clamped state, even if the oil pressure in the forward oil chamber 8 decreases due to oil pressure leakage, there will be a gap between the force point portion 5a and the lower surface of the wedge-shaped tightening portion 3c, and between the upper surface of the wedge-shaped tightening portion 3c and the reaction force support portion 2f. A large frictional force acts,
Also, the piston member 3 is a back-up sling 7.
Since the piston member 3 is strongly urged forward, the piston member 3 does not move backward and the clamping force is maintained.
次に、クランプを解除する場合、往動油室８の
圧油を排出しつつ復動油室９に圧油を供給する
と、復動油室９の油圧力が上記摩擦力とバツクア
ツプスプリング７のバネ力に打ち勝つてピストン
部材３が後方へ動かされ、クランプ解除がなされ
ることになる。 Next, when releasing the clamp, if pressure oil is supplied to the backward movement oil chamber 9 while discharging the pressure oil in the forward movement oil chamber 8, the hydraulic pressure in the backward movement oil chamber 9 is combined with the above frictional force and the back up spring 7. The piston member 3 is moved rearward by overcoming the spring force, and the clamp is released.
ところで、上記楔状締付部３ｃの下面側が傾斜
平面状に形成され、且つ楔状締付部３ｃの上面及
び是に接触する反力支持部２ｆが平面状に形成さ
れているので、楔状締付部３ｃと反力支持部２ｆ
間に作用する面圧は第２図の面圧分布A1に示し
たように幅方向（紙面直交方向）に等分布化さ
れ、ハウジング２の弾性変形が緩和され、そこに
作用する摩擦力が緩和され、復動油室９の油圧力
により確実にクランプ解除することが可能とな
る。 By the way, since the lower surface side of the wedge-shaped tightening section 3c is formed in an inclined planar shape, and the reaction force support section 2f that contacts the upper surface of the wedge-shaped tightening section 3c is formed in a planar shape, the wedge-shaped tightening section 3c and reaction force support part 2f
The surface pressure acting between the housings 2 and 2 is equally distributed in the width direction (direction perpendicular to the page) as shown in surface pressure distribution A1 in Figure 2, the elastic deformation of the housing 2 is alleviated, and the frictional force acting thereon is reduced. It becomes possible to reliably release the clamp by the hydraulic pressure of the double acting oil chamber 9.
上記実施例の変形例について第３図により説明
する。 A modification of the above embodiment will be explained with reference to FIG.
このクランプ装置１Ａにおいては、前記楔状締
付部３ｃに代えてピストンロツド３ｂの先端から
分離された楔状締付部３Ｃが設けられ、その上面
面は平面状の反力支持部２Ｆに面接触する平面状
に形成され、またその後端面はピストンロツド３
ｂの前端面に当接する平面状に形成されている。 In this clamping device 1A, a wedge-shaped clamping part 3C is provided in place of the wedge-shaped clamping part 3c, and the wedge-shaped clamping part 3C is separated from the tip of the piston rod 3b. The piston rod 3 is formed on the rear end surface.
It is formed into a flat shape that comes into contact with the front end surface of b.
そして、締付部部材３Ｃの下側においてピスト
ンロツド３ｂの前端部には前方へ係合部３Ｄが突
設され、係合部３Ｄの係合フツク３Ｅが締付部材
３Ｃの下面側の係合凹部３Ｆに係合されている。 An engaging portion 3D is provided at the front end of the piston rod 3b on the lower side of the tightening member 3C and protrudes forward, and the engaging hook 3E of the engaging portion 3D is connected to the engaging recess on the lower surface side of the tightening member 3C. It is engaged with 3F.
第３図に示す変形例において、楔状締付部材３
Ｃの上面とこれに接触する反力支持部２Ｆとが平
面状に形成されているだけでなく、楔状締付部材
３Ｃがピストンロツド３ｂの先端から分断されて
いるので、クランプ時反力支持部２Ｆで楔状締付
部材３Ｃを受け止める反力は、楔状締付部材３Ｃ
の上面の全域に一様に分布し、その面圧は第３図
の面圧分布A2と第４図の面圧分布B2に示すよう
に幅方向にも前後方向にも等分布化し、それだけ
面圧が小さくなるので、ハウジング２の弾性変形
も緩和され、楔状締付部材３Ｃと反力支持部２Ｆ
間に作用する摩擦力も小さくなるから、復動油圧
９の油圧力で確実にクランプ解除することが出来
る。 In the modification shown in FIG.
Not only is the upper surface of C and the reaction force support part 2F in contact therewith formed in a flat shape, but also the wedge-shaped tightening member 3C is separated from the tip of the piston rod 3b, so that the reaction force support part 2F during clamping is not only flat. The reaction force that receives the wedge-shaped tightening member 3C is the wedge-shaped tightening member 3C.
The surface pressure is uniformly distributed over the entire upper surface, and the surface pressure is equally distributed in the width direction and the front and back directions, as shown in the surface pressure distribution A 2 in Figure 3 and the surface pressure distribution B 2 in Figure 4. Since the surface pressure is reduced accordingly, the elastic deformation of the housing 2 is also alleviated, and the wedge-shaped tightening member 3C and the reaction force support portion 2F are
Since the frictional force acting between them is also reduced, the clamp can be reliably released with the hydraulic pressure of the double-acting hydraulic pressure 9.
上記のように、楔状締付部材３Ｃの反力支持部
２Ｆ間に作用する面圧を下げることにより、クラ
ンプ作動時及びクランプ解除時の作動確実性を確
保できること、反力支持部２Ｆの付近のハウジン
グ２の壁厚小さくして軽量化することが出来る。 As mentioned above, by lowering the surface pressure acting between the reaction force support parts 2F of the wedge-shaped tightening member 3C, operational reliability can be ensured during clamp operation and clamp release, and the The housing 2 can be made lighter by reducing its wall thickness.
図面の第１図〜第４図は本考案の実施例を示す
もので、第１図はクランプ装置の縦断がほ面図、
第２図は第１図−線断面図、第３図は変形例
に係る第１相当部分図、第４図は第３図−線
断面図、第５図は従来のクランプ装置の縦断側面
図、第６図は第５図−線断面図である。
２……ハウジング、２ｆ・２Ｆ……反力支持
部、３……クランプシリンダ、３ｃ……楔状締付
部、３Ｃ……楔状締付部材、５……クランプ部
材、５ａ……力点部。
1 to 4 of the drawings show an embodiment of the present invention.
Fig. 2 is a sectional view taken along the line taken from Fig. 1, Fig. 3 is a first equivalent partial view according to a modified example, Fig. 4 is a sectional view taken taken taken from Fig. 3, and Fig. 5 is a vertical sectional side view of a conventional clamp device. , FIG. 6 is a sectional view taken along the line of FIG. 5. 2... Housing, 2f/2F... Reaction force support part, 3... Clamp cylinder, 3c... Wedge-shaped tightening part, 3C... Wedge-shaped tightening member, 5... Clamp member, 5a... Force point part.
Claims (1)
ンを介して揺動自在に枢着されたクランプ部材
と、クランプ部材をクランプ駆動するクランプシ
リンダとを備えたクランプ装置において、 上記クランプ部材の後端部の下部を枢支ピンを
介してハウジングに枢着するとともに、クランプ
部材の上端部に緩傾斜湾曲面状の力点部をまたク
ランプ部材の前端下部に作用点部を夫々形成し、 上記クランプシリンダのピストンロツドの先端
部に、クランプ状態において上記力点部とこれに
対向するハウジングの反力支持部間に嵌入される
楔状の締付部材を一体又は別体に設け、 上記クランプシリンダの往動油室内にクランプ
状態においてピストンロツドをバツクアツプする
バツクアツプスプリングを設け、 上記ハウジングの下部内に、クランプ部材を退
入方向へ付勢するリトラクタ機構を設け、 上記締付部材と反力支持部の接触面を平面状に
形成したことを特徴とするクランプ装置。[Scope of Claim for Utility Model Registration] A clamp device comprising a housing, a clamp member pivotally attached to the front side of the housing via a pivot pin, and a clamp cylinder that clamps and drives the clamp member, The lower part of the rear end of the clamp member is pivotally connected to the housing via a pivot pin, and the upper end of the clamp member has a force point part shaped like a gently sloped curved surface, and the lower part of the front end of the clamp member has a force point part, respectively. and a wedge-shaped tightening member is integrally or separately provided at the tip of the piston rod of the clamp cylinder, and is fitted between the force point part and the reaction force support part of the housing opposing it in the clamped state, and the clamp A back-up spring for backing up the piston rod in a clamped state is provided in the reciprocating oil chamber of the cylinder, and a retractor mechanism for urging the clamp member in the retracting direction is provided in the lower part of the housing to support the tightening member and reaction force. A clamping device characterized in that a contact surface of the portion is formed into a flat shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987102008U JPH0442021Y2 (en) | 1987-07-01 | 1987-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987102008U JPH0442021Y2 (en) | 1987-07-01 | 1987-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6410330U JPS6410330U (en) | 1989-01-19 |
| JPH0442021Y2 true JPH0442021Y2 (en) | 1992-10-02 |
Family
ID=31331523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987102008U Expired JPH0442021Y2 (en) | 1987-07-01 | 1987-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442021Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102493902B1 (en) * | 2021-10-08 | 2023-01-31 | 김도석 | A jig for altek base processing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010063541A1 (en) * | 2010-12-20 | 2012-06-21 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Workpiece holding device for fixing a plate-like workpiece, in particular a sheet, to a workpiece-moving unit of a machine tool |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5741834A (en) * | 1980-08-26 | 1982-03-09 | Jiyonzu Konsorideetetsudo Ltd | Clamping device |
| JPS6158930B2 (en) * | 1978-06-19 | 1986-12-13 | Yoshida Kogyo Kk |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6158930U (en) * | 1984-09-21 | 1986-04-21 |
-
1987
- 1987-07-01 JP JP1987102008U patent/JPH0442021Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6158930B2 (en) * | 1978-06-19 | 1986-12-13 | Yoshida Kogyo Kk | |
| JPS5741834A (en) * | 1980-08-26 | 1982-03-09 | Jiyonzu Konsorideetetsudo Ltd | Clamping device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102493902B1 (en) * | 2021-10-08 | 2023-01-31 | 김도석 | A jig for altek base processing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6410330U (en) | 1989-01-19 |
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