JP2700496B2 - Driving method in automatic drafting machine - Google Patents
Driving method in automatic drafting machineInfo
- Publication number
- JP2700496B2 JP2700496B2 JP25358789A JP25358789A JP2700496B2 JP 2700496 B2 JP2700496 B2 JP 2700496B2 JP 25358789 A JP25358789 A JP 25358789A JP 25358789 A JP25358789 A JP 25358789A JP 2700496 B2 JP2700496 B2 JP 2700496B2
- Authority
- JP
- Japan
- Prior art keywords
- power transmission
- moving rail
- endless power
- transmission member
- drive motor
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は自動製図機における移動レール駆動方法に関
する。The present invention relates to a method for driving a moving rail in an automatic drafting machine.
従来の自動製図機は、第３図に示すように、一対のプ
ーリ2,4に、ワイヤロープ、チェーン、スチールベルト
及びタイミングベルトなどの屈曲自在な無端状動力伝達
部材６を適宜のテンションを有して掛け渡し、一対のプ
ーリ8,10に、前記動力伝達部材６に対して平行となるよ
うに、屈曲自在な無端状の動力伝達部材12を適宜のテン
ションを有して掛け渡している。移動レール14の両端
は、動力伝達部材6,12の上位水平部に連結されている。
前記プーリ4,10を連結する伝達駆動軸16はＸ駆動用モー
タ18に歯車等の動力伝達機構を介して連結している。前
記移動レール14には、ペンヘッド20が移動自在に取り付
けられ、別途に設けたＹ駆動系（図示省略）により、移
動レール14に沿って移動制御させるように構成されてい
る。前記Ｘ駆動用モータ18の駆動により、動力伝達部材
6,12が回動され、この回動に伴って移動レール14がＸ方
向に平行移動するように構成されている。前記動力伝達
部材6,12間には作画テーブル（図示省略）が配置され、
上記移動レール14のＸ方向の平行移動と、ペンヘッド20
の移動レール14に沿ったＹ方向の移動と、ペンヘッド20
に内蔵されたペン昇降駆動機構の昇降動作によって、作
画テーブル上の用紙に所定の作画が行なわれるように構
成されている。As shown in FIG. 3, the conventional automatic drafting machine has a pair of pulleys 2 and 4 and a bendable endless power transmission member 6 such as a wire rope, a chain, a steel belt, and a timing belt having an appropriate tension. An endless power transmission member 12 that is bendable and has an appropriate tension is passed between the pair of pulleys 8 and 10 so as to be parallel to the power transmission member 6. Both ends of the moving rail 14 are connected to upper horizontal portions of the power transmission members 6, 12.
A transmission drive shaft 16 connecting the pulleys 4 and 10 is connected to an X drive motor 18 via a power transmission mechanism such as a gear. A pen head 20 is movably attached to the moving rail 14, and is configured to be controlled to move along the moving rail 14 by a separately provided Y drive system (not shown). By driving the X drive motor 18, a power transmission member
The movable rails 6 and 12 are rotated, and the moving rail 14 is configured to move in the X direction in parallel with the rotation. A drawing table (not shown) is arranged between the power transmission members 6 and 12,
Parallel movement of the moving rail 14 in the X direction and the pen head 20
Movement in the Y direction along the moving rail 14 and the pen head 20
A predetermined drawing is performed on the paper on the drawing table by the raising and lowering operation of the pen raising and lowering driving mechanism incorporated in the printer.
上記した従来技術の構成において、作画範囲が大き
く、動力伝達部材6,12が長くなった場合、移動レール14
が伝達駆動軸16から離れた位置では、動力伝達部材6,12
のばね定数が下がり移動レール14の応答が悪くなって、
作画の線質が低下するという欠陥が存した。In the configuration of the prior art described above, when the drawing range is large and the power transmission members 6 and 12 are long, the moving rail 14
At a position away from the transmission drive shaft 16, the power transmission members 6, 12
And the response of the moving rail 14 deteriorates,
There was a defect that the line quality of drawing deteriorated.
本発明は上記欠陥を除去することを目的とするもので
ある。An object of the present invention is to eliminate the above defects.
上記目的を達成するため、本発明は、一対のプーリ間
に掛け渡された屈曲自在な第１の無端状動力伝達部材
と、該第１の無端状動力伝達部材に対して所定間隔を存
して略平行となるように、一対のプーリ間に掛け渡され
た、屈曲自在な第２の無端状動力伝達部材と、両端部が
前記第１と第２の無端状動力伝達部材にぞぞれ連結され
た移動レールとを備え、前記第１と第２の無端状動力伝
達部材の回動によって前記移動レールを平行移動させる
ようにした自動製図機において、前記第１と第２の無端
状動力伝達部材の各々の一端側のプーリを第１の駆動モ
ータに連結し、他端側のプーリを第２の駆動モータに連
結し、前記両駆動モータを同期させて駆動するようにし
たものである。In order to achieve the above object, the present invention provides a first endless power transmission member that is bendable between a pair of pulleys, and a predetermined distance from the first endless power transmission member. And a bendable second endless power transmission member bridged between a pair of pulleys so as to be substantially parallel to each other, and both ends connected to the first and second endless power transmission members, respectively. And an endless power transmission, wherein the first and second endless power transmission members are moved in parallel by the rotation of the first and second endless power transmission members. A pulley at one end of each member is connected to a first drive motor, and a pulley at the other end is connected to a second drive motor, so that the two drive motors are driven synchronously.
以下に本発明の構成を添付図面に示す実施例を参照し
て詳細に説明する。Hereinafter, the configuration of the present invention will be described in detail with reference to embodiments shown in the accompanying drawings.
22,24は伝達駆動軸であり、自動製図機の機体に回転
自在に支承されている。前記伝達駆動軸22,24の各々の
両端にはローププーリ26,28,30,32が固設されている。
前記ローププーリ28,32間、及び26,30間には無端状の可
撓性ワイヤロープから成る動力伝達部材34,36が適宜の
テンションを有して掛け渡されている。38は前記機体に
形成されたレールガイド（図示省略）に沿って第１図
中、左右方向に平行移動自在に配置された移動レールで
あり、これの両端は前記動力伝達部材36,34の上位水平
部に固定されている。前記移動レール38の平行移動範囲
の下側には作画テーブル（図示省略）が配置されてい
る。前記移動レール38には、公知のＹ駆動系に連係し
て、該レール38に沿って移動可能にペンヘッド（図示省
略）が取り付けられている。40,42は互いに同期して駆
動されるようにコントローラに接続されたＸ駆動モータ
であり、各々の出力軸に固着された歯車44,46が、前記
Ｘ伝達駆動軸22,24のそれぞれに固着された歯車48,50に
図示の如く噛み合っている。52,54はエンコーダであ
り、Ｘ駆動モータ40,42の出力軸の回転運動をパルス信
号に変換してコントローラにフィードバックするための
ものである。Reference numerals 22 and 24 denote transmission drive shafts, which are rotatably supported by the body of the automatic drafting machine. Rope pulleys 26, 28, 30, 32 are fixed to both ends of the transmission drive shafts 22, 24, respectively.
Between the rope pulleys 28 and 32 and between the rope pulleys 28 and 30, power transmission members 34 and 36 made of endless flexible wire ropes are wound with appropriate tension. Numeral 38 denotes a moving rail which is arranged to be movable in the horizontal direction in FIG. 1 along a rail guide (not shown) formed on the body, and both ends of which are located above the power transmitting members 36 and 34. It is fixed to the horizontal part. A drawing table (not shown) is arranged below the parallel movement range of the moving rail 38. A pen head (not shown) is attached to the moving rail 38 so as to be movable along the rail 38 in association with a known Y drive system. Reference numerals 40 and 42 denote X drive motors connected to a controller so as to be driven in synchronization with each other. Gears 44 and 46 fixed to the respective output shafts are fixed to the X transmission drive shafts 22 and 24, respectively. The gears 48 and 50 are engaged with each other as shown in the figure. Reference numerals 52 and 54 denote encoders for converting the rotational movement of the output shafts of the X drive motors 40 and 42 into pulse signals and feeding them back to the controller.
次に本実施例の動作について説明する。 Next, the operation of this embodiment will be described.
コントローラの制御によるＸ駆動モータ40,42の出力
軸の同期回転により、伝達駆動軸22,24が同期回転し、
移動レール38は第１図中、左右方向（Ｘ方向）に平行移
動する。もし、従来のように、一方のＸ駆動モータ42の
みによって移動レール38を駆動するものと仮定すると、
Ｘ駆動モータ42に近い部分で移動レール38をＸ方向に移
動し、ペンヘッドを移動レール38に沿って移動し、作画
テーブル上の用紙に作画を行う場合は、移動レール38を
コントロールする動力伝達部材34,36の長さは、一方
の、伝達駆動軸24と移動レール38間ｌが短く、他方が長
くなる。この場合、動力伝達部材34,36のばね定数が上
がり、移動レール38の応答性は良好である。しかるに、
Ｘ駆動モータ42に遠い部分で作画した場合、伝達駆動軸
24と移動レール38間ｌの距離が長くなり、動力伝達部材
34,36のばね定数が下がり、移動レール38の応答が悪く
なって作画の線質が低下する。しかるに本実施例は、両
方の伝達軸22,24にＸ駆動モータ40,42が連結しているた
め、Ｙレール38は常に伝達駆動軸22,24の近くで制御さ
れることになる。そのため動力伝達部材34,36のばね定
数が上がり移動レール38の応答が良くなって良好な線質
の作画を行うことができる。尚、本実施例では、動力伝
達部材としてワイヤロープを用いたが、他の同効資材例
えば、スチールベルト、タイミングベルト、その他の屈
曲自在な部材を用いることができる。By the synchronous rotation of the output shafts of the X drive motors 40 and 42 under the control of the controller, the transmission drive shafts 22 and 24 are synchronously rotated,
The moving rail 38 moves in parallel in the left-right direction (X direction) in FIG. If it is assumed that the moving rail 38 is driven by only one X drive motor 42 as in the related art,
When the moving rail 38 is moved in the X direction at a portion close to the X drive motor 42, the pen head is moved along the moving rail 38, and when drawing on paper on the drawing table, a power transmission member that controls the moving rail 38. The length of one of the transmissions 34, 36 is shorter between the transmission drive shaft 24 and the moving rail 38, and the other is longer. In this case, the spring constant of the power transmission members 34 and 36 increases, and the responsiveness of the moving rail 38 is good. However,
When the image is drawn in a part far from the X drive motor 42, the transmission drive shaft
The distance between 24 and the moving rail 38 is longer, and the power transmission member
The spring constants of 34 and 36 are reduced, the response of the moving rail 38 is deteriorated, and the quality of drawing is reduced. However, in this embodiment, since the X drive motors 40 and 42 are connected to both the transmission shafts 22 and 24, the Y rail 38 is always controlled near the transmission drive shafts 22 and 24. Therefore, the spring constant of the power transmission members 34 and 36 is increased, and the response of the moving rail 38 is improved, so that it is possible to perform drawing with good quality. In this embodiment, the wire rope is used as the power transmission member. However, other equivalent materials, for example, a steel belt, a timing belt, and other flexible members can be used.
本発明は上述の如く構成したので、動力伝達部材のば
ね定数が上がって移動レールの応答性を良くすることが
でき、良好な線質で作画を行うことができ、しかも、異
なる作画位置での線質の差を少なくすることができ、ま
た、駆動モータとして小型モータを利用できるので加速
性を高めることができる等の効果が存する。Since the present invention is configured as described above, the spring constant of the power transmission member is increased, the responsiveness of the moving rail can be improved, and drawing can be performed with good quality. There is an effect that the difference in beam quality can be reduced, and a small motor can be used as the drive motor, so that the acceleration performance can be improved.
第１図は説明平面図、第２図は同、側面図、第３図は従
来技術の外観説明図である。 2,4……プーリ、６……動力伝達部材、8,10……プー
リ、12……動力伝達部材、14……移動レール、16……伝
達駆動軸、18……駆動用モータ、20……ペンヘッド、2
2,24……伝達駆動軸、26,28,30,32……プーリ、34,36…
…動力伝達部材、38……移動レール、40,42……Ｘ駆動
モータ、44,46,48,50……歯車、52,54……エンコーダ。FIG. 1 is an explanatory plan view, FIG. 2 is a side view thereof, and FIG. 3 is an external view explanatory view of the prior art. 2,4 pulley, 6 power transmission member, 8,10 pulley, 12 power transmission member, 14 moving rail, 16 transmission drive shaft, 18 drive motor, 20 … Pen head, 2
2,24 ... Transmission drive shaft, 26,28,30,32 ... Pulley, 34,36 ...
... power transmission member, 38 ... moving rail, 40, 42 ... X drive motor, 44, 46, 48, 50 ... gear, 52, 54 ... encoder.
Claims (1)
第１の無端状動力伝達部材と、該第１の無端状動力伝達
部材に対して所定間隔を存して略平行となるように、一
対のプーリ間に掛け渡された、屈曲自在な第２の無端状
動力伝達部材と、両端部が前記第１と第２の無端状動力
伝達部材にぞぞれ連結された移動レールとを備え、前記
第１と第２の無端状動力伝達部材の回動によって前記移
動レールを平行移動させるようにした自動製図機におい
て、前記第１と第２の無端状動力伝達部材の各々の一端
側のプーリを第１の駆動モータに連結し、他端側のプー
リを第２の駆動モータに連結し、前記両駆動モータを同
期させて駆動するようにしたことを特徴とする駆動方
法。A first endless power transmission member which is bridged between a pair of pulleys and is substantially parallel to the first endless power transmission member at a predetermined interval; A second endless power transmission member, which is bent between a pair of pulleys, and a movable rail whose both ends are respectively connected to the first and second endless power transmission members. An automatic drafting machine, wherein the moving rail is moved in parallel by the rotation of the first and second endless power transmission members, wherein one end of each of the first and second endless power transmission members is provided. A pulley connected to the first drive motor, and a pulley on the other end side connected to the second drive motor, so that the two drive motors are driven synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25358789A JP2700496B2 (en) | 1989-09-28 | 1989-09-28 | Driving method in automatic drafting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25358789A JP2700496B2 (en) | 1989-09-28 | 1989-09-28 | Driving method in automatic drafting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03114794A JPH03114794A (en) | 1991-05-15 |
| JP2700496B2 true JP2700496B2 (en) | 1998-01-21 |
Family
ID=17253450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25358789A Expired - Lifetime JP2700496B2 (en) | 1989-09-28 | 1989-09-28 | Driving method in automatic drafting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2700496B2 (en) |
-
1989
- 1989-09-28 JP JP25358789A patent/JP2700496B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03114794A (en) | 1991-05-15 |
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