JPH042751Y2 - - Google Patents
Info
- Publication number
- JPH042751Y2 JPH042751Y2 JP15224985U JP15224985U JPH042751Y2 JP H042751 Y2 JPH042751 Y2 JP H042751Y2 JP 15224985 U JP15224985 U JP 15224985U JP 15224985 U JP15224985 U JP 15224985U JP H042751 Y2 JPH042751 Y2 JP H042751Y2
- Authority
- JP
- Japan
- Prior art keywords
- cam
- ball
- rotary drive
- camshaft
- drive member
- 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
- 239000013013 elastic material Substances 0.000 description 3
Landscapes
- Feeding Of Workpieces (AREA)
- Automatic Assembly (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は、自動組立ライン等において、環状を
呈するワークを保持して所定の位置に供給する環
状ワーク掴み治具に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an annular workpiece gripping jig that holds an annular workpiece and supplies it to a predetermined position in an automatic assembly line or the like.
(従来の技術)
自動組立ライン等において、環状を呈するワー
クを保持して所定の位置に供給する手段として、
一例を第6図に示すように環状ワーク掴み治具が
使用されている。(Prior art) As a means for holding an annular workpiece and feeding it to a predetermined position on an automatic assembly line, etc.
As an example, as shown in FIG. 6, an annular workpiece gripping jig is used.
同図の環状ワーク掴み治具は、略円筒形状を呈
する保持部材20に3個の保持孔21が穿たれ、
各保持孔21内に、略T字形状の保持ピン22及
び小スプリング23が挿入され、保持部材20に
内部に、先端にテーパー面26を形成されたロツ
ド25が軸方向移動自在に挿入され、ロツド25
の軸方向前進に伴つて突出する保持ピン22によ
り環状ワーク15が保持され、ロツド25の後退
に伴つて保持ピン22による環状ワークの保持が
解除される構造を備えている。 The annular workpiece gripping jig shown in the figure has three holding holes 21 bored in a holding member 20 having a substantially cylindrical shape.
A substantially T-shaped holding pin 22 and a small spring 23 are inserted into each holding hole 21, and a rod 25 having a tapered surface 26 at its tip is inserted into the holding member 20 so as to be movable in the axial direction. Rod 25
The annular workpiece 15 is held by a holding pin 22 that protrudes as the rod 25 advances in the axial direction, and the holding of the annular workpiece by the holding pin 22 is released as the rod 25 retreats.
(考案が解決しようとする問題点)
上記した従来例の環状ワーク掴み治具は、ロツ
ド25の軸方向移動に伴つて、テーパー面26に
押された保持ピン22が環状ワーク15を保持す
る構造を備えているために、ロツト25の往復ス
トロークのためのスペースを必要とし、又、環状
ワーク15の径寸法のバラツキを吸収するため
に、保持ピン22の少なくとも1個に弾性伸縮部
を設ける等の特別の対策を必要とする。(Problems to be Solved by the Invention) The conventional annular workpiece gripping jig described above has a structure in which the holding pin 22 pressed against the tapered surface 26 holds the annular workpiece 15 as the rod 25 moves in the axial direction. Because of this, a space is required for the reciprocating stroke of the rod 25, and in order to absorb variations in the diameter of the annular workpiece 15, at least one of the holding pins 22 is provided with an elastic stretchable portion. special measures are required.
本考案は、上記した問題点を解消して先端部の
長さ寸法を短く設定することが可能であり、環状
ワークの径寸法のバラツキを吸収して確実に保持
し得る環状ワーク掴み治具の構造を提示すること
を目的とするものである。 The present invention solves the above-mentioned problems, makes it possible to set the length of the tip part short, and provides a gripping jig for an annular workpiece that can absorb variations in the diameter of the annular workpiece and reliably hold it. The purpose is to present the structure.
(問題点を解決するための手段)
本考案は、上記した問題点に鑑み、略棒状を呈
して球移動カムを備えるカム軸を、略円筒形状を
呈して球保持孔を穿たれ、軸方向に対向して円周
方向に分割され、円周方向に対し互いに反対側に
傾斜し、かつ円周方向位置を異にする第1の傾斜
面及び第2の傾斜面を有する回転駆動カム溝を付
されたカム筒に、相対回転可能かつ軸方向相対移
動不能に挿入し、前記球移動カムに当接して前記
支持軸の回転により径方向に出入する球を前記球
保持孔内に配置し、ゴム様弾性材料をもつて製せ
られた弾性リングにより前記球を覆い、略円筒形
状を呈し、前記回転駆動カム溝に挿入されるカム
ピンを付された回転駆動部材に、前記カム軸を相
対回転不能かつ軸方向相対移動可能に挿入すると
ともに、前記カム筒を相対回転可能かつ軸方向相
対移動可能に挿入し、更に、前記支軸軸と前記回
転駆動部材の間に、両部材を互いに離間させるス
プリングを配置して、環状ワーク掴み治具を構成
するものでる。(Means for Solving the Problems) In view of the above-mentioned problems, the present invention provides a camshaft having a substantially rod-like shape and provided with a ball-moving cam, which has a substantially cylindrical shape and has a ball-retaining hole bored in the axial direction. a rotary drive cam groove having a first inclined surface and a second inclined surface which are divided in the circumferential direction facing each other, are inclined in opposite directions with respect to the circumferential direction, and have different positions in the circumferential direction; A ball is inserted into the attached cam cylinder so as to be relatively rotatable but relatively immovable in the axial direction, and is in contact with the ball moving cam and moves in and out in the radial direction by rotation of the support shaft, and is arranged in the ball holding hole, The ball is covered with an elastic ring made of a rubber-like elastic material, and the camshaft is rotated relative to a rotational drive member having a substantially cylindrical shape and having a cam pin inserted into the rotation drive cam groove. The cam cylinder is inserted so as to be relatively rotatable and relatively movable in the axial direction, and further, the two members are spaced apart from each other between the support shaft and the rotary drive member. An annular work gripping jig is constructed by arranging a spring.
(作用)
上記した構成になる環状ワーク掴み治具におい
て、カム軸及びカム筒と回転駆動部材とを、スプ
リングを圧して軸方向に相対移動させると、カム
筒に付されたカムピンが、回転駆動カム溝の側面
に接してカム筒に回転を付与し、カム軸に球移動
カムが、カム軸とカム筒の相対回転に伴い、球を
半径方向外方に移動させ、弾性リングを膨らませ
て環状ワークを保持させる。(Function) In the annular workpiece gripping jig configured as described above, when the cam shaft, the cam barrel, and the rotational drive member are moved relative to each other in the axial direction by pressing the spring, the cam pin attached to the cam barrel is rotated and driven. Rotation is applied to the cam barrel in contact with the side surface of the cam groove, and a ball-moving cam on the cam shaft moves the ball radially outward as the cam shaft and cam barrel rotate relative to each other, inflating the elastic ring to form an annular shape. Hold the workpiece.
(実施例)
第1図の実施例において、略棒状を呈し、詳細
に第2図に示すように、略楕円形の断面形状を呈
する球移動カム2を付されたカム溝1が、略円筒
形状を呈し、互いに背合せの位置に球保持孔4及
び詳細を第3図に示す回転駆動カム溝5を付され
たカム筒3に相対回転自在に挿入され、カム軸1
とカム筒3の軸方向の相対移動を抑止する止め輪
6が、カム筒3を挟んでカム軸1に取付けられ、
略円筒形状を呈し、カム筒3の回転駆動カム溝5
に挿入されるカムピン8を付された回転駆動部材
7に、カム筒3が相対回転可能かつ軸方向相対移
動可能に挿入され、カム軸1と回転駆動部材7の
相対回転を抑止する滑りキー9がカム軸1に植え
られ、カム軸1と回転駆動部材7を互いに離間さ
せるスプリング10が両部材1,7の間に介挿さ
れ、カム筒3の球保持孔4に球11が挿入されて
カム軸1の球移動カム2の面に当接し、ゴム様弾
性材料をもつて製せられた弾性バンド12がカム
筒3に対する締め代を保つて球11に被されてい
る。(Embodiment) In the embodiment shown in FIG. 1, the cam groove 1 having a substantially rod shape and having a spherical moving cam 2 having a substantially elliptical cross-sectional shape as shown in detail in FIG. The cam shaft 1 is inserted into a cam cylinder 3 which has a ball holding hole 4 and a rotary drive cam groove 5 whose details are shown in FIG.
A retaining ring 6 for suppressing relative movement of the cam cylinder 3 in the axial direction is attached to the cam shaft 1 with the cam cylinder 3 in between,
The rotationally driven cam groove 5 of the cam cylinder 3 has a substantially cylindrical shape.
The cam cylinder 3 is inserted into the rotary drive member 7 attached with the cam pin 8 which is inserted into the rotary drive member 7 so as to be relatively rotatable and relatively movable in the axial direction, and the sliding key 9 prevents relative rotation between the cam shaft 1 and the rotary drive member 7. is placed on the camshaft 1, a spring 10 for separating the camshaft 1 and the rotational drive member 7 from each other is inserted between the two members 1 and 7, and a ball 11 is inserted into the ball holding hole 4 of the cam cylinder 3. An elastic band 12 made of a rubber-like elastic material is placed in contact with the surface of the ball-moving cam 2 of the camshaft 1, and is wrapped around the ball 11 while maintaining the tightness against the cam cylinder 3.
カム筒3の周面に付された回転駆動カム溝5
は、半径方向外方から見た1周(360度)の展開
図を第3図に示すように、軸方向に対向して円周
方向に4分割され、円周方向に対し互いに反対側
に傾斜し、かつ円周方向位置を異にする第1の傾
斜面13及び第2の傾斜面14を形成されてい
る。 Rotation drive cam groove 5 attached to the circumferential surface of the cam cylinder 3
As shown in Figure 3, which is a developed view of one circumference (360 degrees) viewed from the outside in the radial direction, the A first inclined surface 13 and a second inclined surface 14 are formed which are inclined and have different positions in the circumferential direction.
上記した実施例において、第4図に示すよう
に、スプリング10を圧縮して回転駆動部材7を
カム筒3に接近させると、カムピン8が第2の傾
斜面14と接触摺動して(第3図参照)、カム筒
3と回転駆動部材7及びカム軸1との間に相対回
転を生起させ、カム軸1の球移動カム2が球11
を介して弾性バンド12を半ば膨らませ、次い
で、スプリング10の圧縮を解除すると、カムピ
ン8が第1の傾斜面13に接触摺動して(第3図
参照)、第5図に示すように、カム軸1の球移動
カム2が球11を介して弾性バンド12を膨らま
せて環状ワーク15を保持させる。 In the above-mentioned embodiment, as shown in FIG. 3), relative rotation is caused between the cam cylinder 3, the rotational drive member 7, and the camshaft 1, and the ball moving cam 2 of the camshaft 1 moves the ball 11.
When the elastic band 12 is inflated halfway through the spring 10 and the spring 10 is then released, the cam pin 8 slides into contact with the first inclined surface 13 (see FIG. 3), and as shown in FIG. A ball moving cam 2 of a camshaft 1 inflates an elastic band 12 via a ball 11 to hold an annular workpiece 15.
環状ワーク15を所定に位置に移動させた後
に、カム軸1及びカム筒3に対する回転駆動部材
7の軸方向相対往復移動により、弾性バンド12
による環状ワーク15の保持が解除されて、掴み
治具が第1図の状態に復帰する。 After moving the annular workpiece 15 to a predetermined position, the elastic band 12 is
The holding of the annular workpiece 15 is released, and the gripping jig returns to the state shown in FIG.
図示の実施例においては、カム軸1の球移動カ
ム2が略楕円形状に形成されるとともに、回転駆
動部材7の回転駆動カム溝5の両傾斜面13,1
4が円周上4分割に形成されて、カム軸1及びカ
ム筒3に対する回転駆動部材7の軸方向移動の1
往復に伴うカム軸1及びカム筒3間の90度の相対
回転により環状ワーク15が保持され、次ぎの1
往復に伴う90度の相対回転により開放される態様
となつているが、カム軸1の球移動カム2を略3
角形状に形成するとともに、カム筒3の回転駆動
カム溝5を円周上6分割に形成してカム軸1とカ
ム筒3の60度の相対回転に伴つて、環状ワーク1
5が保持され、続く60度の相対回転に伴つて開放
される態様にすることもできる。 In the illustrated embodiment, the spherical moving cam 2 of the camshaft 1 is formed in a substantially elliptical shape, and both inclined surfaces 13, 1 of the rotary drive cam groove 5 of the rotary drive member 7 are formed.
4 is formed into four parts on the circumference, and one part of the axial movement of the rotational drive member 7 with respect to the cam shaft 1 and the cam cylinder 3 is formed.
The annular workpiece 15 is held by the relative rotation of 90 degrees between the camshaft 1 and the cam cylinder 3 during reciprocation, and the next one
Although it is designed to be opened by relative rotation of 90 degrees during reciprocation, the ball moving cam 2 of the cam shaft 1 is rotated approximately 3
The annular workpiece 1 is formed into a rectangular shape, and the rotational drive cam groove 5 of the cam cylinder 3 is divided into six parts on the circumference so that the annular workpiece 1 is formed into a rectangular shape.
It is also possible to adopt a mode in which 5 is held and then opened with the subsequent relative rotation of 60 degrees.
(考案の効果)
本考案に掴み治具が、上記したように、略棒状
を呈して球移動カムを備えるカム軸が、略円筒形
状を呈して球保持孔と、円周方向に対し反対側に
傾斜するとともに、円周方向の位置を異にして互
いに対向する第1及び第2図の傾斜面を備える回
転駆動カム溝を付されたカム筒に、相対回転可能
かつ軸方向相対移動不能に挿入され、前記球移動
カムに支えられる球を前記球保持孔内に配置さ
れ、ゴム様弾性材料製の弾性バンドが前記球を覆
い、略円筒形状を呈し、前記回転駆動カム溝に挿
入されるカムピンを付された回転駆動部材に、前
記カム軸が相対回転不能かつ軸方向相対移動可能
に挿入されるとともに、前記カム筒が、相対回転
可能かつ軸方向相対移動可能に挿入され、更に、
前記カム軸と前記回転駆動部材の間に、両部材を
互いに離間させるスプリングが配置された構成を
備えていることにより、カム軸及びカム筒に対す
る回転駆動部材の軸方向移動によりカム軸とカム
筒の間に相対回転が生起され、カム軸の球移動カ
ムに押された球により、弾性バンドが膨らまされ
て環状ワークを保持するので、環状ワークが安定
して保持され、かつ環状ワーク保持機構を掴み治
具の先端に配置することが可能となる。(Effect of the invention) As described above, in the present invention, the gripping jig has a camshaft having a substantially rod shape and equipped with a ball moving cam, and a camshaft having a substantially cylindrical shape and facing the ball holding hole on the opposite side in the circumferential direction. The cam cylinder is provided with a rotary driving cam groove having inclined surfaces shown in FIGS. 1 and 2 that are inclined at different positions in the circumferential direction and opposite to each other in the circumferential direction. A ball inserted and supported by the ball moving cam is placed in the ball holding hole, and an elastic band made of a rubber-like elastic material covers the ball and has a substantially cylindrical shape, and is inserted into the rotary drive cam groove. The cam shaft is inserted into a rotational drive member provided with a cam pin so that the cam shaft is relatively non-rotatable and relatively movable in the axial direction, and the cam cylinder is inserted so that it is relatively rotatable and relatively movable in the axial direction, and further,
By having a configuration in which a spring is arranged between the camshaft and the rotary drive member to separate both members from each other, the camshaft and the cam barrel are moved by the axial movement of the rotary drive member relative to the camshaft and the cam barrel. During this time, relative rotation is generated, and the elastic band is inflated by the ball pushed by the ball moving cam of the camshaft and holds the annular workpiece, so that the annular workpiece is held stably and the annular workpiece holding mechanism is It can be placed at the tip of the gripping jig.
第1図は、本考案の一実施例の断面図、第2図
は、第1図上に矢印−を付して示した位置に
おける断面図、第3図は、同実施例の要部の展開
図、第4図及び第5図は、同実施例の作動状況を
示す断面図、第6図は、従来技術による掴み治具
の一例の断面図である。
1……カム軸、2……球移動カム、3……カム
筒、4……球保持孔、5……回転駆動カム溝、6
……止め輪、7……回転駆動部材、8……カムピ
ン、9……滑りキー、10……スプリング、11
……球、12……弾性バンド、13……第1の傾
斜面、14……第2の傾斜面、15……環状ワー
ク、20……保持部材、21……保持孔、22…
…保持ピン、25……ロツド、26……テーパー
面。
Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a sectional view at the position indicated by the arrow - in Fig. 1, and Fig. 3 is a sectional view of the main parts of the embodiment. The developed view, FIGS. 4 and 5 are cross-sectional views showing the operating conditions of the same embodiment, and FIG. 6 is a cross-sectional view of an example of a gripping jig according to the prior art. 1...Cam shaft, 2...Ball moving cam, 3...Cam cylinder, 4...Ball holding hole, 5...Rotation drive cam groove, 6
... Retaining ring, 7 ... Rotation drive member, 8 ... Cam pin, 9 ... Sliding key, 10 ... Spring, 11
... Ball, 12 ... Elastic band, 13 ... First slope, 14 ... Second slope, 15 ... Annular workpiece, 20 ... Holding member, 21 ... Holding hole, 22 ...
...Retaining pin, 25...rod, 26...tapered surface.
Claims (1)
1、略円筒形状を呈し、球保持孔4と、軸方向に
対向して円周方向に分割され、円周方向に対し互
いに反対側に傾斜し、かつ円周方向位置を異にす
る第1の傾斜面13及び第2の傾斜面14を有す
る回転駆動カム溝5を付されて前記カム軸1を、
相対回転可能かつ軸方向相対移動不能に挿入され
たカム筒3、略円筒形状を呈し、前記回転駆動カ
ム溝5に挿入されるカムピン8を付されて前記カ
ム軸1を、相対回転不能かつ軸方向相対移動可能
に挿入されるとともに、前記カム筒3を、相対回
転可能かつ軸方向相対移動可能に挿入された回転
駆動部材7、前記カム軸1と前記回転駆動部材7
の間に介挿されたスプリング10、前記球保持孔
4内に挿入されて前記球移動カム2に当接する球
11及び前記球11を覆う弾性バンド12を有す
る環状ワーク掴み治具。 A cam shaft 1 having a substantially rod-like shape and having a ball moving cam 2 attached thereto; The camshaft 1 is provided with a rotary drive cam groove 5 having a first inclined surface 13 and a second inclined surface 14 which are inclined at different positions in the circumferential direction.
The cam cylinder 3 is inserted so as to be relatively rotatable and relatively immovable in the axial direction. A rotary drive member 7 inserted so as to be relatively movable in the direction and to allow the cam cylinder 3 to be relatively rotatable and relatively movable in the axial direction; the cam shaft 1 and the rotary drive member 7;
This annular work gripping jig has a spring 10 inserted between the balls, a ball 11 that is inserted into the ball holding hole 4 and comes into contact with the ball moving cam 2, and an elastic band 12 that covers the ball 11.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15224985U JPH042751Y2 (en) | 1985-10-04 | 1985-10-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15224985U JPH042751Y2 (en) | 1985-10-04 | 1985-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6261421U JPS6261421U (en) | 1987-04-16 |
JPH042751Y2 true JPH042751Y2 (en) | 1992-01-30 |
Family
ID=31070055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15224985U Expired JPH042751Y2 (en) | 1985-10-04 | 1985-10-04 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH042751Y2 (en) |
-
1985
- 1985-10-04 JP JP15224985U patent/JPH042751Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6261421U (en) | 1987-04-16 |
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