JPS5840520B2 - Automatic drawing machine using wires in a cross-shaped configuration - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic drafting machine using wires in a cross-shaped configuration.

Conventionally, an automatic drawing machine using cross-shaped wires uses 12 drive wires and auxiliary wires to move a drawing device 1, as shown in FIG.

For example, if the Y-direction drive pulley 2 rotates clockwise,
When a command is given to the directional drive motor MY, this driving force moves the Y drive pulley 4 to the left in the figure via the Y drive wire 3.

At this time, the tension of the Y direction wire 5, the Y auxiliary wire 6, and the Y auxiliary wire γ increases, while the Y1 drive pulley 8 moves to the right in the figure, thereby causing the Y direction wire 9 and the Y auxiliary wire 1
0, Y auxiliary wire 11 has its tension reduced.

As a result, the drawing device 1 moves downward in the figure.

Also, when a command is given to the drive motor MX in the X direction, the drawing device 1 is moved in the same way, so by giving the necessary commands to the drive motors MX and MY in the X and Y directions, any line can be drawn. This is made possible by the drawing device 1.

By the way, the slide blocks 13 and 14 in each of the X and Y directions
, 15, and 16, the number of wires running in five directions is 3.
A book wire is hanging.

For example, looking at the Y-direction slide block 15,
Regarding the left and right directions in the figure, the X direction wire 17 and the Y track 18
supports the Y-direction slide block 15, but in the vertical direction in the figure, the two wires, the X-direction wire 17 and the Y-direction wire 11 facing upward, are in the same direction, and the Y-direction wire 7 and the X-direction wire 17 are Since the two wires are stretched in opposite directions, the responsiveness to the movement of the drawing device 1 is good, but there are drawbacks in the following points.

In other words, in the above configuration, since the number of wires is large, it is very difficult to balance the tension of the wires and it is impossible to maintain a constant tension balance.

This causes vibrations in the wire, which significantly impairs the quality of drawing.

The vibration of the wire includes a first vibration along the wire and a second vibration in a direction perpendicular to the wire.

When drawing a straight line, the first vibration causes the drawing device to shake along the straight line, so that the disturbance of the drawn line is slight.

The second type of vibration causes the straight line to be drawn to waver, causing wobbling and causing large disturbances in the drawing line.

Furthermore, in the case where the X-direction wire and the Y-direction wire are moved simultaneously to draw a diagonal drawing line in the X and Y planes, the first vibration also causes disturbance of the drawing line.

The angle at which the line is most disturbed is 45° to the X and Y axes.
This is the case.

In particular, when increasing the drawing speed and performing high-speed and highly efficient drawing, the drawing quality may be affected by the vibration of the X-direction wire and Y-direction wire due to sudden starts, stops, and reversals. It was difficult to do so.

Furthermore, in the conventional system shown in FIG. 1, there are two rows of pulleys for suspending the wire for moving the drawing device 1, consisting of two rows of pulleys 8, 4, and 28 in the Y direction, and two rows of pulleys IJ 25, 26 in the X direction.
and 29, the device has the disadvantage of becoming large.

In addition, 19 shown in FIG. 1 is an X direction wire, 20° 21.
22.23 is the X auxiliary wire, 24 is the X orbit, 25.26
is an X drive pulley, 21 is an X direction drive pulley, 28 is a pulley attached to the X orbit 24, 29 is a pulley attached to the Y orbit 18, 13a.

14a, 15a, and 16a are pulleys built into the slide blocks 13, 14, 15, and 16 in the Y direction and the X direction.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic drawing machine using wires having a cross-shaped configuration, which eliminates the drawbacks of the above-mentioned prior art, and which reduces the size of the device and simplifies the structure.

2 and 3 showing one embodiment of the present invention will be explained below.

Note that parts that are the same as those of the conventional model are designated by the same reference numerals.

FIG. 2 shows the principle of the present invention. In the present invention, a T
A new letter-shaped moving cursor 31 is provided, and a guide roller 31a for this moving cursor 31.

The X direction wire 19, the Y auxiliary wires 10, 11, and the Y direction wire 5°9 are wound around the wires 31'a, 31b, and 31b as shown in FIG.
1. Fix the end of 19 on the fixed side.

In the above description of FIG. 2, only the drive system on the drive motor MY side was described, but the drive system on the one drive motor MX side is as shown in FIG. 3.

That is, a T-shaped movable sole 33 connected to a conveyor 32 connected to one drive motor MX is provided, and guide rollers 33a, 33'a of this cursor 33 are provided.

33b, 33'b each wire 5, 9, 17, 19°20
The wire is wound as shown in the figure, and the wire 5,9°17.1
Fix the ends of 9 and 20 to the fixed side.

Since the present invention has the above-mentioned configuration, 1. When the conveyor 32 moves in the direction of the arrow X by driving the drive motor MX, each guide roller 33a, 33'a .

33b and 33'b move simultaneously.

For this reason, each guide roller 33a, 33'a, 33b
, 33'b, the wires 5,9.17,19.
20 and auxiliary wires 20, 22 stretched in the opposite direction to these wires 5, 9.
The direction slide blocks 13 and 14 move in the X direction to similarly move the drawing device 1 in the X direction.

At this time, the slide blocks 15 and 16 in the Y direction are connected to the wires 17 and 19 and the auxiliary wires 10. It remains stationary without being moved by If.

Further, when the conveyor 30 moves in the Y arrow direction by driving the drive motor MY, each guide roller 31a, 31
Wires 5, 9, 1 suspended from 'a, 31b, 31'b
0. if, 17, 19, and an auxiliary wire 10.11 stretched in the opposite direction to this wire 17.19, the slide block 15 in the Y direction is
．． 16 moves in the Y direction, and similarly moves the drawing device 1 in the Y direction.

Therefore, by driving the above-mentioned drive motor MX and drive motor MY simultaneously or individually, it becomes possible to draw an arbitrary line using the drawing device 1.

As described above, in the present invention, the wire supporting the drawing device is moved by the moving cursor connected to the Since it does not stretch even during movement (movement of the drawing machine), vibration of the drawing device is prevented, so the drawings of the drawing machine can be of high quality (no wobbling of drawn lines, no waviness, no rounded corners of lines).

Furthermore, since the conveyor is not integrated with the X-direction wire and the Y-direction wire, the drawing quality of the drawing machine can be improved by using a drive mechanism with less elasticity, such as a chino.

Furthermore, since multiple guide rollers for the X and Y axes are integrated into a single moving cursor, the area around the drawing machine is organized (simplified), making it easier for drafters to approach the drawing area. In addition, since the number of wires is reduced, tension adjustment work when assembling the drawing machine can be reduced.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of a conventional automatic drawing machine using wires with a cross-shaped configuration, Figure 2 is a principle diagram showing one drive system of the present invention, and Figure 3 is a book that applies the principle of Figure 2. FIG. 1 is an explanatory diagram of an automatic drawing machine using a cross-shaped wire according to the invention. 1... Drawing device, 5, 9... Y direction wire, 10° 11... Y auxiliary wire, 13, 1
4...X direction slide block, 15, 16.
...Y direction slide block, 13a, 14a,
15a, 16a...Pulley, 17.19...
...Y direction wire, 18...Y orbit, 20.
22...X auxiliary wire, 24...X orbit, 28,29...Boo IJ, 30,32...
...Conveyor, 31, 33...T-shaped cursor, 31a. 31'a, 31b, 31'b, 33a, 33'a, 33
b. 33'b...Guide roller, MY...
¥1 Drive motor, MX...X, Drive motor.

Claims (1)

[Claims] 1 A block containing a booth was provided so as to be movable along the X and Y orbits, and X-direction wires, Y-direction wires, and auxiliary wires for supporting the drawing device were suspended from the pulleys of these blocks, and connected to these wires. In an automatic drawing machine using a cross-shaped wire configured to move the drawing device in the XY direction via the blocks on the XY orbit by the X and Y drive mechanisms, the X A moving cursor with a built-in guide roller is provided between the direction wire, the Y direction wire, the auxiliary wire, and the XY drive mechanism in parallel with the blocks on the X and Y orbits, and the X and Y drive mechanism is provided at one end of these cursors. An automatic drafting machine using wires having a cross-shaped configuration, characterized in that the wires are connected to each other and the wires are suspended from an idler roller at the other end.