JPH03278997A - X-cursor support apparatus in automatic line drawing machine - Google Patents

Abstract

PURPOSE:To prevent the generation of the moving error of an X-cursor by supporting the almost intermediate position in respective moving directions of the X-cursor on a Y-axis guide in a freely rotatable manner. CONSTITUTION:A rotary solenoid 48 controlled in its driving by a controller to raise and lower a support arm 40 and a line drawing device 42 rises from or comes into contact with the paper on a placing surface to perform predetermined drawing on the paper. Even when there is an error in the degree of parallelization of X-axis rails 4, 6 or bending is generated in X-axis rails 4, 6 when a Y-axis guide 8 moves along the X-axis rails 4, 6 in parallel, X-cursors 12, 14 follow the X-axis rails 4, 6 independently of the Y-axis guide 8 and moves along the X-axis rails 4, 6 while they are displaced in a rotary direction. Therefore, the eccentric load applied to the X-cursors 12, 14 are absorbed by the rotary displacement with respect to the Y-axis guide 8 by the parallel error or bending of the X-axis rails 4, 6 with the movement of the Y-axis guide 8 and the X-cursors 12, 14 are controlled so as to be smoothly and accurately moved along the X-axis rails 4, 6.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a method for placing a casing on a mounting surface at a desired position, and controlling a support arm protruding from the casing in the XY direction of force using a controller. The present invention relates to a small automatic drawing machine for drawing characters, symbols, etc. on a sheet of paper using a drawing tool held in the drawing tool, and more specifically to a support device for an X cursor relative to a Y-axis guide.

[Conventional technology]

In this type of automatic line machine, as shown in Figure 5, 2
The X cursor 74, which is integrally fixed to both ends of the Y-axis guide 72, is placed on the mutually parallel X-axis guides 70 (the other one is not shown) of the book via guide rollers 76, 78. It is movably connected to the X-axis handle 7o. Said Y-axis guide 7
Reference numeral 2 guides a support arm that supports the drawing tool in the X direction along the X axis rule 70.

[Problem that the invention seeks to solve]

As described above, when the X cursor 74 is integrally fixed to the Y-axis guide 72, the parallelism of the two X-axis rails 70 and the perpendicularity of the X-axis rail 70 and the Y-axis guide 72 are is required during assembly. In addition, if an external force is applied to the casing body and, for example, an error occurs in the parallelism of the two X-axis bars 70 that exceeds the allowable range, an error will occur in the movement control of the X cursor 74, resulting in poor drawing line quality. There was a flaw.

The present invention aims to eliminate the above-mentioned defects.

[Means to solve problems]

In order to achieve the above object, the present invention provides a casing 2 placed on a mounting surface, a pair of mutually substantially parallel X-axis rails 4°6 fixed to the casing 2, and a pair of X-axis rails 4.
, 6, an X cursor 12.14 linked to an
a Y-axis guide 8 whose both ends are attached to the Y-axis guide 8; a Y-cursor 38 which is movably attached to the Y-axis guide 8 and linked to the Y motor; In the automatic drawing machine, the X cursor 12.
is rotatably supported on the Y-axis guide 8 at a substantially intermediate position in the direction of movement thereof.

[Effect]

When the X cursor 12.14 moves along the X-axis rails 4, 6, the X-cursor 12.14 moves independently of the Y-axis guide 8 and follows the X-axis rails 4, 6; The X
The X cursor 12.14 absorbs deflection of the shaft rails 4, 6 and errors in parallelism by rotational displacement with respect to the Y-axis guide 8, and moves smoothly along the X-axis rails 4, 6.

〔Example〕

The configuration of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

2 is a casing of an automatic video line machine having a bottom surface of a shape suitable for being placed on a drawing board or other table, on which both ends of round bar-shaped X-axis rails 4 and 6 are parallel to each other. It is supported as such.

8 is a Y arranged perpendicularly to the X-axis rails 4 and 6.
The X cursor 12.14 is provided with a shaft 1 at both ends of which the X cursor 12.14 is rotatably centered about an axis perpendicular to the bottom surface of the casing.
o Supported. The structure of this shaft support is such that, as shown in FIG. 3, a shaft 10 with a board 10a slides in the axial direction through overlapping holes made through the end of the Y-axis guide 8 and approximately in the center of the X cursor 12. A flat spring 16 and a washer 18 are slidably fitted onto the shaft 10, and further,
A double nut 20 is screwed into the threaded portion of the shaft 10. The configuration of the shaft support between the other end of the Y-axis guide 8 and the X cursor 14 is also the same as the above configuration shown in FIG. A pair of guide rollers 22.24 (the guide roller on the X cursor 14 side is not shown) is rotatably attached to the shaft 2 near both ends of the X cursor 12.14 in the moving direction.
6.28 is supported, and wire pulleys 30, 32, 34, and 36 are rotatably supported coaxially with the guide rollers 22.24. A V-groove is formed along the circumferential surface of the guide rollers 22, 24, and the V-groove is rotatably fitted to the outer surface of the X-axis rails 4, 6. The Y-axis guide 8 has a Y-cursor 3 that can be slid freely along the Y-axis guide 8.
8 are connected via rollers. One end of a support arm 40 is rotatably supported on the Y cursor 38 about an axis parallel to the X-axis rails 4 and 6. The other lower surface of the support arm 40 is slidably mounted on a lift bar (not shown) arranged parallel to the X-axis rail 6. The tip of the support arm 40 projects forward of the casing 2 from an opening formed in the front wall of the casing 2 along the X-axis rail 6, and a known drawing is provided at the tip of the support arm 40. A wire fitting 42 is attached. An X motor 44, a Y motor 46, and a rotary solenoid 48 are fixed to the casing 2. The output shaft of the X motor 44 is connected to the X cursor 12.14 via a belt power transmission mechanism, and the X cursor 1 is driven by the X motor 44.
2 and 14 are configured to move along the X-axis rails 4 and 6. The output shaft of the Y motor 46 is connected to the Y cursor 38 via a wire rope power transmission mechanism.
The Y cursor 38 is configured to move along the Y-axis guide 8 by driving the Y motor 46 . The output shaft of the rotary solenoid 48 is
It is connected to the lift bar via a power transmission mechanism, and the lift bar is rotationally controlled by driving the rotary solenoid 48, so that the side of the support arm 40 protruding from the casing 2 can be placed on a mounting surface such as a table. It is constructed so that it can be raised and lowered. The casing 2 includes the XY motors 44, 46 and the solenoid 48.
It has a built-in controller to control the drive.

A keyboard and a liquid crystal display section for inputting printing and drawing data to the controller are disposed on the upper cover of the casing 2.

Next, the operation of this embodiment will be explained.

When drawing information is entered into the controller by operating the keyboard, the output shafts of the XY motors 44 and 46 rotate, and the X cursors 12 and 14 move synchronously in the X direction along the X axis rail 4°6. , the Y cursor 38 moves in the Y direction along the Y-axis guide 8. Further, the rotary solenoid 48 is driven and controlled by the controller, the support arm 40 is raised and lowered, the drawing tool 42 is raised or brought into contact with the paper on the placement surface, and a predetermined drawing is performed on the paper. . When the Y-axis guide 8 moves in parallel along the X-axis rails 4 and 6, even if there is an error in the parallelism of the X-axis rails 4 and 6, or even if there is deflection in the X-axis rails 4 and 6, The X cursor 12.14 follows the X-axis rails 4, 6 independently of the Y-axis guide 8, and moves along the X-axis rail 4.6 while being displaced in the rotational direction. Therefore, as the Y-axis guide 8 moves, the unbalanced load applied to the X cursor 12.14 due to the parallel error and deflection of the X-axis rails 4 and 6 causes the rotational displacement of the X cursor 12.14 with respect to the Y-axis guide 8. The X cursor 12.14 is controlled to move smoothly and accurately along the X-axis rails 4, 6.

In addition, in the above embodiment, as shown in FIG.
Belt pulleys 50, 5 for linking with the X motor 44
2, 54, 56 are rotatably supported on the belt pulley mounting plates 58, 60, the belt pulley mounting plates 58, 60 are fitted into the roller support shafts 26, 28, and the nuts 62, 64 are attached to the roller support shafts 26. , 28, and pulley mounting plate 58.
, 60 are fixed to the roller support shafts 26, 28, but the fourth
As shown in the figure, belt pulleys 66 and 68 corresponding to the belt pulleys described above may be rotatably supported on rising portions 8a and 8b integrally formed on the Y-axis guide 8.

〔effect〕

As described above, in the present invention, since the X cursor can follow and move with respect to the X-axis rail, the assembly accuracy may be somewhat rough when attaching the Y-axis guide to the X-axis rail.
In addition, even if there is an error in the parallelism of the two X-axis rails or deflection occurs, the X cursor moves independently of the Y-axis guide, so movement errors are less likely to occur in the X cursor. There is an effect of

[Brief explanation of the drawing]

Figure 1 is an external view, Figure 2 is a plan view, Figure 3 is a rear view, and Figure 4 is a rear view.
The figure is an external view showing another embodiment, and FIG. 5 is an external view of a conventional technique. 2...Casing, 4,6...X-axis rail, 8...Y
Axis guide, 12.14...X cursor, 16...Set spring, 18...Washer, 20...Nut, 22,2
4... Guide roller, 30, 32, 34, 36... Wire pre, 38... Y cursor, 4o... Support arm, 42... Drawing tool, 44... X motor, 46...・
・Y motor, 48... Solenoid, 50, 52, 54
, 56... Belt pulley, 58.60... Mounting plate,
62.64... Nut, 66.68... Belt pulley.

Claims (1)

[Claims] (1) A casing 2 placed on a mounting surface and a pair of mutually substantially parallel X-axis rails 4 fixed to the casing 2
.
an axis guide 8; a Y cursor 38 movably attached to the Y-axis guide 8 and linked to a Y motor;
In an automatic drawing machine equipped with a support arm 40 that is supported by a cursor 38 and has a drawing tool attached that projects from the opening of the casing 2 to the front of the casing 2, movement of the X cursors 12 and 14 is provided. An X cursor support device characterized in that a substantially intermediate position in the direction is rotatably supported by the Y-axis guide 8.