JPS6230339B2 - - Google Patents
Info
- Publication number
- JPS6230339B2 JPS6230339B2 JP5503082A JP5503082A JPS6230339B2 JP S6230339 B2 JPS6230339 B2 JP S6230339B2 JP 5503082 A JP5503082 A JP 5503082A JP 5503082 A JP5503082 A JP 5503082A JP S6230339 B2 JPS6230339 B2 JP S6230339B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- cam
- cam follower
- adjustment
- rod
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
- F16H25/10—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with adjustable throw
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明はカムを利用して、ストロークを任意に
変更する駆動装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive device that uses a cam to arbitrarily change the stroke.
従来の駆動装置としては、第１図に示すように
構成されていた。第１図は、通常のカム機構より
なる駆動装置であり、カム軸１に第２図に示すカ
ム曲線をもつカム２が固定され、カム軸１は図示
されない軸受で支持されている。さらに図示され
ない軸受によりレバー軸３が支持され、このレバ
ー軸３にく字状のレバー４の中間部が固定されて
いる。このレバー４の一方には、カム２と接する
カムフオロア５を取付け、他方にはレバー軸３の
軸心方向に短軸がカムフオロア６の直径に等しい
長孔４ａが設けられている。レバー４はバネ７の
バネ力によりカムフオロア５を介してカム２に拘
束されている。上記カムフオロア６は軸受８に支
持されるスライド棒９に固定されている。スライ
ド棒９の先端には位置決めするワーク１０が装着
されている。カム軸１の回転により、レバー４は
カム２の第２図に示すリフトＡに相当する第１図
の角度θを揺動する。レバー４の揺動により、ス
ライド棒９はレバー４の比率Ｃ／Ｂにカム２のリ
フトＡを乗じた第１図の量Ｄを運動する。 A conventional drive device was constructed as shown in FIG. FIG. 1 shows a drive device consisting of an ordinary cam mechanism, in which a cam 2 having a cam curve shown in FIG. 2 is fixed to a camshaft 1, and the camshaft 1 is supported by a bearing (not shown). Further, a lever shaft 3 is supported by a bearing (not shown), and an intermediate portion of a dogleg-shaped lever 4 is fixed to this lever shaft 3. A cam follower 5 in contact with the cam 2 is attached to one end of the lever 4, and an elongated hole 4a whose short axis is equal to the diameter of the cam follower 6 is provided in the axial direction of the lever shaft 3 on the other end. The lever 4 is restrained to the cam 2 via the cam follower 5 by the spring force of the spring 7. The cam follower 6 is fixed to a slide rod 9 supported by a bearing 8. A workpiece 10 to be positioned is attached to the tip of the slide rod 9. The rotation of the camshaft 1 causes the lever 4 to swing through an angle .theta. in FIG. 1, which corresponds to the lift A of the cam 2 shown in FIG. As the lever 4 swings, the slide rod 9 moves by an amount D shown in FIG. 1, which is the ratio C/B of the lever 4 multiplied by the lift A of the cam 2.
この場合、ストロークは一定である。ところが
近年の多品種に渡る市場の要求に適応するために
は、任意のストロークを設定する必要がある。そ
のためには品種の切り換え毎に、カム自体の交換
が必要になり、ロス時間が発生して不便であつ
た。 In this case the stroke is constant. However, in order to adapt to the recent market demands for a wide variety of products, it is necessary to set an arbitrary stroke. For this purpose, it is necessary to replace the cam itself every time the product type is changed, which is inconvenient and results in lost time.
本発明は、このような従来の欠点を除去するも
ので、多品種に対応し、短時間で品種切換えがで
きる駆動装置を提供することを目的とするもので
ある。 The present invention aims to eliminate such conventional drawbacks, and to provide a drive device that is compatible with a wide variety of products and can change products in a short time.
この目的を達成するために本発明はモータ駆動
あるいはシリンダ駆動によるレバー比可変機構を
設けたことを特徴とするものである。 In order to achieve this object, the present invention is characterized in that a lever ratio variable mechanism driven by a motor or cylinder is provided.
以下本発明の実施例を第３図〜第８図の図面を
用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings of FIGS. 3 to 8.
まず、第３図に示す実施例について説明する。
なお第３図中、第１図と同一部品については同一
番号を付しており、従来の駆動装置に対し第３図
に示すようにレバー比可変機構を追加したところ
に特徴がある。レバー比可変機構は以下に示すよ
うに構成されている。この一実施例は第１図のＢ
に対するＣの長さを可変したものである。 First, the embodiment shown in FIG. 3 will be described.
In FIG. 3, parts that are the same as those in FIG. 1 are given the same numbers, and the present invention is characterized by the addition of a variable lever ratio mechanism to the conventional drive device, as shown in FIG. The lever ratio variable mechanism is configured as shown below. One example of this is B in FIG.
The length of C is made variable.
すなわち、従来のスライド棒９の代りに、一端
に上下方向の貫通孔をもつ摺動案内部１１ａを有
するスライド棒１１を用い、このスライド棒１１
の摺動案内部１１ａに摺動の動力をレバー４から
受けて伝達する直線状の調整棒１２をはめこみ、
この調整棒１２の一端には、レバー４の長孔４ａ
に拘束されるカムフオロア６が固定されており他
端にはカムフオロア１３が固定されている。カム
フオロア１３はその外径に等しい水平方向の溝案
内部１４ａを有する調整ブロツク１４の溝案内部
１４ａにはまりこみ移動可能に構成されている。
この調整ブロツク１４の垂直部１４ｂは軸受１５
で支持され、この垂直部１４ｂの上端と連続して
設けた水平部１４ｃはネジ軸１６と螺合しており
ネジ軸１６の回転により、第３図のＩ方向に調整
ブロツク４は移動可能に構成されている。ネジ軸
１６は軸受１７，１８で回転方向のみ運動可能に
支持され、一端には電磁ブレーキ１９、他端には
モータ２０の動力を伝達する歯車２１とかみ合う
歯車２２が固定されている。 That is, instead of the conventional slide rod 9, a slide rod 11 having a sliding guide portion 11a having a vertical through hole at one end is used.
A linear adjustment rod 12 that receives and transmits the sliding power from the lever 4 is fitted into the sliding guide portion 11a of the lever 4,
One end of this adjustment rod 12 is provided with a long hole 4a of the lever 4.
A cam follower 6 is fixed to the other end, and a cam follower 13 is fixed to the other end. The cam follower 13 is configured to be movable by being fitted into a groove guide portion 14a of an adjustment block 14 having a horizontal groove guide portion 14a having an outer diameter equal to the outer diameter of the cam follower 13.
The vertical portion 14b of this adjustment block 14 has a bearing 15.
A horizontal portion 14c provided continuously with the upper end of the vertical portion 14b is threadedly engaged with a screw shaft 16, and by rotation of the screw shaft 16, the adjustment block 4 can be moved in the direction I in FIG. It is configured. The screw shaft 16 is supported by bearings 17 and 18 so as to be movable only in the rotational direction, and has an electromagnetic brake 19 fixed to one end and a gear 22 that meshes with a gear 21 that transmits the power of a motor 20 to the other end.
次に動作を説明する。モータ２０の回転によ
り、ネジ軸１６を介して、調整ブロツク１４をＩ
方向に移動する。この移動量をＸとすると調整ブ
ロツク１４の移動により調整棒１２とそれに固定
されているカムフオロア６が移動し、レバー４と
カムフオロア６の位置関係が変わる。従つてレバ
ー軸３の中心とカムフオロア６の中心の長さが変
化する。変化量はＸであり、レバー比は（Ｃ−
Ｘ）／Ｂに変わる。ここでＣはレバー軸３の中心
と変化前のカムフオロア６の中心との長さであ
り、Ｂはレバー軸３の中心からカムフオロア５の
中心までの長さである。なおスライド棒１１の摺
動可能方向は調整ブロツク１４の溝案内部１４ａ
の方向と一致するように構成してある。 Next, the operation will be explained. The rotation of the motor 20 causes the adjustment block 14 to move through the screw shaft 16.
move in the direction. Assuming that this amount of movement is X, the adjustment rod 12 and the cam follower 6 fixed thereto are moved by the movement of the adjustment block 14, and the positional relationship between the lever 4 and the cam follower 6 is changed. Therefore, the lengths between the center of the lever shaft 3 and the center of the cam follower 6 change. The amount of change is X, and the lever ratio is (C-
Changes to X)/B. Here, C is the length between the center of the lever shaft 3 and the center of the cam follower 6 before change, and B is the length from the center of the lever shaft 3 to the center of the cam follower 5. Note that the sliding direction of the slide rod 11 is the groove guide portion 14a of the adjustment block 14.
It is configured to match the direction of
上記のように構成することにより、ワーク１０
は次の過程を経て運動する。 By configuring as above, the workpiece 10
moves through the following process.
カム軸１の回転によりカム２、カムフオロア５
を介してレバー４が揺動する。この揺動はカムフ
オロア６を介して調整棒１２に伝わる。調整棒１
２は調整ブロツク１４とスライド棒１１に支持さ
れていて、調整棒１２の運動はスライド棒１１に
伝えられワーク１０は運動する。このワーク１０
は、レバー４の比（Ｃ−Ｘ）／Ｂとカム２のリフ
トＡの乗数Ｅ（第３図）だけ運動する。 Cam 2 and cam follower 5 are rotated by the rotation of camshaft 1.
The lever 4 swings via. This rocking motion is transmitted to the adjustment rod 12 via the cam follower 6. Adjustment rod 1
2 is supported by an adjustment block 14 and a slide rod 11, and the movement of the adjustment rod 12 is transmitted to the slide rod 11, causing the workpiece 10 to move. This work 10
moves by a multiplier E (FIG. 3) of the ratio (C-X)/B of the lever 4 and the lift A of the cam 2.
また、第４図に示すようにモータ２０のかわり
にシリンダ２３を用いたシリンダ駆動によつて
も、このレバー可変機構は成り立つ。このとき、
２位置選択でしかないという欠点があるが、寸時
に対応できる点が長所である。 Further, as shown in FIG. 4, this lever variable mechanism can also be achieved by cylinder driving using a cylinder 23 instead of the motor 20. At this time,
Although it has the disadvantage that only two positions can be selected, its advantage is that it can be used at short notice.
さらに、第５図に示すようにレバー比可変機構
を、レバー４とカム２の接点がカム２の最小外径
にあるとき、レバー４の長軸方向に設置すれば、
第６図に示すようにストロークの始点を固定する
ことができる。また、第７図に示すような運動を
させるためには、レバー比可変機構をレバー４と
カム２の接点がカム２の最大外径にあるときレバ
ー４の長軸方向に設置すればいいし、第８図に示
すような運動をさせるためには、レバー比可変機
構をレバー４とカム２の接点がカム２の最大外径
と最小外径の中間位置にあるときのレバー４の長
軸方向に設置すればいい。これらはいずれも、ス
ペースの関係、ストローク固定の点で便利であ
る。 Furthermore, as shown in FIG. 5, if the variable lever ratio mechanism is installed in the longitudinal direction of the lever 4 when the contact point between the lever 4 and the cam 2 is at the minimum outer diameter of the cam 2,
The starting point of the stroke can be fixed as shown in FIG. Also, in order to make the movement shown in Fig. 7, the variable lever ratio mechanism should be installed in the longitudinal direction of the lever 4 when the contact point between the lever 4 and the cam 2 is at the maximum outer diameter of the cam 2. , in order to make the movement shown in FIG. It should be installed in the direction. All of these are convenient in terms of space and fixed stroke.
このように本発明の駆動装置はモータ駆動やシ
リンダ駆動によつてレバー比が任意に変えられる
ことになり、従来はカム自体の交換を余儀なくさ
れていたのが、その煩雑さから、解放され、簡単
に多品種に対応でき、しかも切り換え時間が短い
という利点があり、設備の実稼動時間を伸ばし、
生産性を大きく向上させることができ、従来、手
作業でしかできなかつた所にも、機械化を進める
ことができるなどの利点をもち、工業的価値の大
なるものである。 In this way, the drive device of the present invention allows the lever ratio to be changed arbitrarily by motor drive or cylinder drive, and the cam itself has traditionally been forced to be replaced, but this is freed from the complexity. It has the advantage of being able to easily handle a wide variety of products and shortening the changeover time, extending the actual operating time of the equipment.
It has the advantage of greatly improving productivity and allowing mechanization to be carried out in areas that could only be done by hand in the past, and is therefore of great industrial value.
第１図は従来の駆動装置を示す一部切欠正面
図、第２図は同装置に使用するカムのカム曲線
図、第３図は本発明の駆動装置の一実施例を示す
一部切欠正面図、第４図、第５図は他の実施例の
一部切欠正面図、第６図〜第８図は同装置のワー
クの動作ストロークを示す説明図である。
１……カム軸、２……カム、３……レバー軸、
４……レバー、４ａ……長孔、５……カムフオロ
ア、６……カムフオロア、７……バネ、８……軸
受、１０……ワーク、１１……スライド棒、１１
ａ……摺動案内部、１２……調整棒、１３……カ
ムフオロア、１４……調整ブロツク、１４ａ……
溝案内部、１４ｂ……垂直部、１４ｃ……水平
部、１５……軸受、１６……ネジ軸、１７……軸
受、１８……軸受、１９……電磁ブレーキ、２０
……モータ、２１……歯車、２２……歯車。
Fig. 1 is a partially cutaway front view showing a conventional drive device, Fig. 2 is a cam curve diagram of a cam used in the same device, and Fig. 3 is a partially cutaway front view showing an embodiment of the drive device of the present invention. 4 and 5 are partially cutaway front views of other embodiments, and FIGS. 6 to 8 are explanatory diagrams showing the operation stroke of the workpiece of the same apparatus. 1...Cam shaft, 2...Cam, 3...Lever shaft,
4... Lever, 4a... Long hole, 5... Cam follower, 6... Cam follower, 7... Spring, 8... Bearing, 10... Work, 11... Slide rod, 11
a...Sliding guide part, 12...Adjustment rod, 13...Cam follower, 14...Adjustment block, 14a...
Groove guide part, 14b... Vertical part, 14c... Horizontal part, 15... Bearing, 16... Screw shaft, 17... Bearing, 18... Bearing, 19... Electromagnetic brake, 20
...Motor, 21...Gear, 22...Gear.
Claims (1)
当接するカムフオロアをもち他端に長孔を設けた
く字状のレバーと、 一端にレバーの長孔にはまりこむカムフオロア
をもち、他端にもカムフオロアを備えた調整棒
と、 この調整棒を一端に摺動可能にはめこみ他端に
ワークを備えたスライド棒と、 上記調整棒の他端のカムフオロアをはめこむ溝
案内部をスライド棒の摺動方向と同一方向に設け
た調整ブロツクと、 この調整ブロツクをレバーの長孔方向に摺動さ
せるモータまたはシリンダと、 より構成してなる駆動装置。[Scope of Claims] 1. A cam coupled to a camshaft, a dog-shaped lever whose intermediate portion is coupled to a lever shaft, has a cam follower at one end that abuts the cam, and has a long hole at the other end; An adjustment rod that has a cam follower that fits into the long hole of the lever and also has a cam follower on the other end, a slide rod that has this adjustment rod slidably fitted into one end and a work piece on the other end, and the other adjustment rods mentioned above. A drive consisting of an adjustment block with a groove guide in which the cam follower at the end is fitted in the same direction as the sliding direction of the slide rod, and a motor or cylinder that slides this adjustment block in the direction of the long hole of the lever. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5503082A JPS58174751A (en) | 1982-04-01 | 1982-04-01 | Driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5503082A JPS58174751A (en) | 1982-04-01 | 1982-04-01 | Driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58174751A JPS58174751A (en) | 1983-10-13 |
| JPS6230339B2 true JPS6230339B2 (en) | 1987-07-01 |
Family
ID=12987262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5503082A Granted JPS58174751A (en) | 1982-04-01 | 1982-04-01 | Driver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58174751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6358686U (en) * | 1986-10-01 | 1988-04-19 | ||
| JPS6457642U (en) * | 1987-10-02 | 1989-04-10 |
-
1982
- 1982-04-01 JP JP5503082A patent/JPS58174751A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6358686U (en) * | 1986-10-01 | 1988-04-19 | ||
| JPS6457642U (en) * | 1987-10-02 | 1989-04-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58174751A (en) | 1983-10-13 |
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