JP3630018B2 - Automatic plotter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic drawing machine having a scale attached in front of the automatic drawing machine body.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is known an automatic drawing machine in which a scale is attached in front of the automatic drawing machine body. On this scale, ruled lines are drawn in order to match the drawing surface or the like to a desired drawing start position.
[0003]
[Problems to be solved by the invention]
By the way, when this scale is attached to the main body of the automatic drawing machine, there is a difference between the direction of the ruled line drawn on the scale and the X direction in which the pen arm of the automatic drawing machine actually moves due to being used for a long time. May not match. In this case, if the ruled line of the scale and the ruled line of the drawing are matched, there is a problem that the drawing is shifted from the ruled line of the drawing. Even if the deviation is known in advance, since the scale is fixed to the automatic drawing machine body, the ruled lines of the scale cannot be adjusted in the correct direction.
[0004]
The present invention has been made in view of the above problems, and when the inclination of the ruled line drawn on the scale does not match the movement direction of the pen arm of the automatic drawing machine, the inclination of the ruled line drawn on the scale is correct. An object of the present invention is to provide an automatic drawing machine that can be adjusted in a direction.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention of claim 1 is an automatic drawing machine provided with a scale attached to the front of the automatic drawing machine body and drawn with ruled lines extending in the X direction,
The inclination of the scale with respect to the X direction can be adjusted.
[0006]
The invention of claim 2 comprises the scale by a fixed scale fixed to the automatic drawing machine main body and a grid scale that is superimposed on the fixed scale and has a ruled line in the X direction,
The grid scale is attached to the fixed scale so that the inclination with respect to the X direction can be adjusted.
[0007]
The invention of claim 3 is characterized in that the grid scale is attached to the fixed scale so as to be movable in the XY directions.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an automatic operation machine according to the present invention will be described below with reference to the drawings.
(Embodiment 1)
FIGS. 1 and 2 show an automatic drawing machine 10. Reference numeral 11 denotes a main body. An upper surface 11A of the main body 11 has an operation unit 13 provided with a plurality of operation keys 12 for inputting drawing information, and an input. And a display unit 14 for displaying the created drawing information.
[0009]
A scale 15 for indicating a drawing range is attached to the lower side of the front end surface 11B of the main body 11, and an opening 16 extending in the left-right direction is formed on the upper front end surface 11B. A pen arm 17 projects forward from the opening 16, and a pen mounting portion 18 is formed at a tip end portion 17 a of the pen arm 17. The pen arm 17 is moved in the X-axis direction (left-right direction) and the Y-axis direction (front-back direction) by an X carriage and a Y carriage (not shown) provided in the main body 11. Reference numerals 18 and 18 denote leg portions provided at the four corners of the bottom surface 11 </ b> C of the main body 11.
[0010]
As shown in FIG. 3, the scale 15 includes a fixed scale 21 that is fixed to the main body 11 and a grid scale 22 that is superimposed on the lower surface 21 </ b> A of the fixed scale 21. Reference numeral 23 denotes an eccentric cam used for attaching the fixed scale 21 and the grid scale 22 on the left side, 24 denotes a locking member used for attaching the fixed scale 21 and the grid scale 22 on the right side, and 25 and 26 denote fixed scales. Reference numeral 21 denotes a screw used for attachment to the main body 11 of the automatic drawing machine 10.
[0011]
As shown in FIG. 4, the fixed scale 21 is a transparent rectangular plate body, and a rectangular opening 21 a is formed at the center thereof. A pair of screw holes 21b and 21b through which screws 25 and 25 are passed are formed on the left and right of the main body side (lower side in FIG. 4) of the fixed scale 21a. A round hole 21c is formed on the left side of the front (upper side in FIG. 4), and a long hole 21d extending in the left-right direction is formed on the right side of the front.
[0012]
As shown in FIG. 5, the grid scale 22 is a rectangular plate having the same type as the fixed scale 21, and an opening 22 a having the same shape as the fixed scale 21 is formed at the center thereof. Further, ruled lines K1, K2,... Extending in the left-right direction (X direction) and ruled lines Ka, Kb,... Extending in the front-rear direction (Y direction) are drawn on the upper surface 22b of the grid scale 22. Further, a locking pin 22c is provided on the front left side of the grid scale 22, and a locking pin 22d is provided on the right side so as to protrude upward at a position corresponding to the position of the round hole 21c and the long hole 21d of the fixed scale 21. It has been.
[0013]
As shown in FIGS. 6A to 6C, the eccentric cam 23 is provided with a circular fitting portion 23a to be fitted into the round hole 21c of the fixed scale 21, and a fitting portion provided above the fitting portion 23a. It has a circular dial part 23b larger than the joint part 23a. The fitting part 23a and the dial part 23b have a cylindrical part having the same size as the locking pin 22c of the grid scale 22 at a position shifted from the center axis of the fitting part 23a and the dial part 23b. A hole 23c penetrating up and down 23b is formed. Further, a step portion 23d is formed on the upper side of the hole portion 23c, and an O-ring 23f is planted on the lower surface 23e of the dial portion 23b.
[0014]
As shown in FIGS. 7A to 7C, the locking member 24 is provided with a circular fitting portion 24a to be fitted into the elongated hole 21d of the fixed scale, and a fitting portion provided above the fitting portion 24a. And a circular protrusion 24b larger than the portion 24a. A circular hole 24d having the same size as the locking pin 22d of the grid scale 22 is formed in the fitting portion 24a and the protruding portion 24b. The fitting portion 24a and the protruding portion 24b are concentric with the fitting portion 24a and the protruding portion 24b. And a stepped portion 24e is formed on the upper side. An O-ring 24g is planted on the lower surface 24f of the dial portion 24b.
[0015]
As shown in FIG. 8, the fixed scale 21 and the grid scale 22 are attached by the eccentric cam 23, and the locking pin 22 c of the grid scale 22 is passed through the round hole 21 c of the fixed scale 21 from below to fix the fixed scale 21. The locking pin 22c of the grid scale 22 is passed through the hole 23c of the eccentric cam 23 from above, and the fitting portion 23a of the eccentric cam 23 is fitted into the round hole 21c of the fixed scale 21. Attachment of the fixed scale 21 and the grid scale 22 by the locking member 24 is performed in the same manner as in the case of the eccentric cam 23. Here, the locking pins 22c and 22d of the grid scale 22 are locked and fixed to the step portions 23d and 24e formed on the eccentric cam 23 and the holes 23c and 24d of the locking member 24, respectively. Further, since the O-rings 23f and 24g provided below the dial portions 23b and 24b of the eccentric cam 23 and the locking member 24 are in contact with the upper surface of the fixed scale 21, the O-rings 23f and 24g and the fixed scale are provided. The eccentric cam 23 is prevented from rotating freely during the operation of the self-operating machine body 11 by the frictional force generated between the upper surface 21e and the upper surface 21e.
[0016]
Next, the operation of the automatic chart machine 10 of the above embodiment will be described.
[0017]
First, it is checked whether the pen moving direction of the pen arm 17 of the main body 11 matches the ruled line direction of the grid scale 22, and as a result, the ruled line direction does not match the pen moving direction. For this purpose, the grid scale 22 is moved by rotating the dial portion 23b of the eccentric cam 23, and the inclination of the ruled line is adjusted.
[0018]
That is, as schematically shown in FIG. 9, by rotating the dial portion 23b of the eccentric cam 23 having the initial position of the locking pin 22c of the grid scale 22 as the position A, the locking pin 22c of the grid scale 22 is When moved from the position A to the position B, the locking pin 22d having the position E as the initial position is moved to the position F. Further, when the locking pin 22c is moved to the position C, the locking pin 22d is moved to the position G, and when the locking pin 22c is moved to the position D, the locking pin 22d is moved to the position F. When the locking pin is moved to the position A, the locking pin is moved to the position E.
[0019]
In this case, as apparent from FIG. 9, when the locking pin 22 c is moved to the position of B and D, the grid scale 22 can obtain the maximum inclination angle θ with respect to the fixed scale 21 ( θ: sin θ = r / L (r: radius of the circumference around which the locking pin moves, L: distance between the locking pin and the locking pin). For this reason, it is possible to adjust the inclination of the ruled line of the grid scale 22 in the range of −θ to θ.
[0020]
Next, the drawing paper is placed in front of the main body 11, the grid scale 22 and the front part of the bottom surface 11 </ b> C of the main body 11 are overlaid on the paper, and the pen arm 17 is moved based on the drawing information input to the main body 11. By moving in the XY direction, drawing is performed in the correct direction on the paper.
[0021]
As described above, the grid scale 22 can be freely moved with respect to the fixed scale 21, so that when the fixed scale 21 is attached to the automatic operation apparatus main body 11, it is generated in the fixed scale, and the movement direction of the pen arm 17 and the ruled line are changed. Even when a deviation occurs in the direction, the inclination of the ruled line drawn on the grid scale 22 can be adjusted.
[0022]
FIG. 10 shows another example of a grid scale and an eccentric cam used in the automatic drawing machine of this embodiment.
[0023]
The grid scale 31 has screw holes 32 and 32 at positions where the locking pins 22c and 22d of the grid scale 22 protrude. The eccentric cam 34 is provided with a pipe 34 a that penetrates the countersunk screw 33 at a position where the hole 23 c of the eccentric cam 23 is provided, and the countersunk screw 33 is inserted from below the screw hole 32. The fixed scale 21 and the grid scale 31 are fixed to the eccentric cam 34 by passing through the pipe 34 a and fastening the nut 35 to the countersunk screw 33 from above the dial portion 34 b of the eccentric cam 33. Since the locking member for attaching the right side of the grid scale 31 to the fixed scale 21 has the same configuration as that of the eccentric cam, description thereof will be omitted.
[0024]
(Embodiment 2)
FIG. 11 shows the fixed scale 41, the grid scale 42, and the eccentric cams 43, 43 used in the automatic chart machine 40 of the second embodiment.
[0025]
Since the fixed scale 41 has the same configuration as the above-described fixed scale 21 except that the long holes 41a and 41a are provided on both the front left and right, detailed description thereof is omitted. Further, since the grid scale 42 and the eccentric cam 43 are the same as the grid scale 22 and the eccentric cam 23 described above, detailed description thereof will be omitted.
[0026]
When the grid scale 42 is moved relative to the fixed scale 41 in the self-operating machine 40 of the second embodiment, the left and right eccentric cams 43 and 43 are movable left and right on the long holes 41a and 41a. Therefore, it is easier to adjust the position and inclination of the ruled line drawn on the grid scale 42. Further, the position of the ruled line on the grid scale can be adjusted to desired positions in the X and Y directions, and the position of the ruled line is drawn. Can be adjusted to the origin position.
[0027]
【The invention's effect】
As described above, according to the first aspect of the present invention, there is provided an automatic drawing machine including a scale attached to the front of the automatic drawing machine body and having a ruled line extending in the X direction. Since the inclination of the scale can be adjusted, the X direction of the ruled line of the scale can be adjusted to the correct direction when the direction of the ruled line of the scale does not coincide with the moving direction of the pen of the automatic drawing machine.
[0028]
According to the invention of claim 2, the scale is constituted by a fixed scale fixed to the main body of the automatic drawing machine, and a grid scale which is superimposed on the fixed scale and has a ruled line in the X direction, Is attached to the fixed scale so that the inclination with respect to the X direction can be adjusted, so that the position and inclination of the ruled line drawn on the scale can be further easily adjusted.
[0029]
According to the invention of claim 3, since the grid scale is attached to the fixed scale so as to be movable in the X and Y directions, the ruled lines of the scale in the Y direction in addition to the X direction can be adjusted.
[Brief description of the drawings]
FIG. 1 is a plan view showing an automatic chart machine 10 according to the present invention.
FIG. 2 is a front view of the automatic operation machine 10 shown in FIG.
FIG. 3 is a configuration diagram showing a scale of the self-operating diagram machine 10;
4 is a top view showing a fixed scale 21. FIG.
5 is a top view showing a grid scale 22. FIG.
6A and 6B show an eccentric cam 23, where FIG. 6A is a side view, FIG. 6B is a top view, and FIG. 6C is a cross-sectional view taken along line AA in FIG.
7A and 7B show a locking member 24, where FIG. 7A is a side view, FIG. 7B is a top view, and FIG. 7C is a cross-sectional view taken along line AA in FIG.
8 is a cross-sectional view showing a state in which the grid scale 22 is attached to the fixed scale 21 by the eccentric cam 23. FIG.
9 is a schematic diagram showing a change in the inclination of the grid scale due to the movement of the eccentric cam 23. FIG.
10 is a cross-sectional view showing a state where the grid scale 31 is attached to the fixed scale 21 by the eccentric cam 34. FIG.
FIG. 11 is a configuration diagram showing a scale of the self-operating diagram machine 40;
[Explanation of symbols]
15 Scale 21 Fixed scale 22 Grid scale 23 Eccentric cam 24 Locking member

Claims (3)

An automatic drawing machine equipped with a scale attached in front of the main body of the automatic plotter and having a ruled line extending in the X direction,
A self-motion diagram machine characterized in that the inclination of the scale with respect to the X direction can be adjusted. The scale is composed of a fixed scale fixed to the automatic drawing machine main body and a grid scale that is superimposed on the fixed scale and has a ruled line drawn in the X direction.
2. The automatic operation apparatus according to claim 1, wherein the grid scale is attached to the fixed scale so that the inclination with respect to the X direction can be adjusted. 3. The automatic operation apparatus according to claim 2, wherein the grid scale is attached to the fixed scale so as to be movable in the XY directions.

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