JPS6318775B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rectangular coordinate dotting device (X-Y plotter) for plotting dots at desired coordinate positions on drawing paper or drawings on a table surface using a dotting device, and in particular, to The present invention relates to a rectangular coordinate dotting device that allows the origin of movement of an instrument to easily match an arbitrary origin set on a drawing paper.

Dotting work using this type of rectangular coordinate dotting device is done by first setting the origin on the drawing paper, then moving the dotting device several millimeters in the X-coordinate direction and several millimeters in the Y-coordinate direction with respect to this origin, and then placing the dot at that position. Press the dot switch and make a dot using the dot device.

Conventionally, as a method for aligning the origin of the dotting instrument with the origin on the drawing paper or drawing, a projector is provided on a carrier that supports the dotting instrument, and a table of a predetermined range below the carrier is displayed on the screen of this projector together with a crosshair indicator. Project the paper surface on the screen, align the center of the crosshair index with the origin on the paper surface, and reset the counter to zero at this position. Then, based on a predetermined offset value, that is, the distance value of the dotting instrument to the index in the XY coordinate axis direction, the operator moves the carrier in the negative direction of the offset value while watching the displayed value on the counter. When the absolute value of the displayed value and the absolute value of the offset value match, the counter is reset to zero.

In this way, the origin of movement of the dotting instrument (0, 0)
is matched to an arbitrary origin on the drawing paper. This method is extremely cumbersome and easy to operate incorrectly, and unless the position of the dotting instrument is set accurately relative to the index based on the offset value displayed in advance, the origin of movement of the dotting instrument must be set on the table. It is not possible to precisely match a desired point on the drawing paper. Therefore, it is not easy to make fine adjustments to the mounting position of the dotting tool so that it is at a predetermined position with respect to the index, and this work must be performed every time the dotting tool is replaced with respect to the carrier. However, it has become extremely troublesome. Therefore, the present invention enables the origin of movement of the dotting instrument to match an arbitrarily set origin on the drawing paper with accuracy and simple operation, regardless of the accuracy of attachment of the dotting instrument to the index device on the carrier. As a zero standard, use paper
It is an object of the present invention to provide a rectangular coordinate dotting device that is capable of dotting points at desired coordinate positions on the XY coordinate axes.

The configuration of the present invention will now be described in detail based on the embodiments shown in the accompanying drawings.

In FIG. 1, 2 is a Y-coordinate rail, one end of which is perpendicular to an X-coordinate rail (not shown) fixed to the rear edge of the table 4, and a first
In the figure, they are connected so as to be movable in the left and right direction (X coordinate axis direction). The other end of the Y-coordinate axis rail 2 is movably mounted on the table 4 via a tail roller (not shown). A Y cursor 6 is movably connected to the Y coordinate rail, and a carrier 8 and a handle 10 are fixedly attached to the Y cursor 6. The carrier 8 is provided with a dotting device 12 and an indicator device 14.
is installed. The index device 14 includes a lens or reading surface 16 supported by a frame, and a reading surface 1.
The main configuration is a crosshair indicator 18 drawn at 6.

A reading switch 20 is attached to the handle 10. 22 is a command keyboard attached to the Y coordinate rail 2, and is equipped with a program switch 24, a reset switch for the counter 84, and other various switches.
2 is provided with an XY coordinate value display section 26.
The movement of the Y-coordinate rail 2 in the X-coordinate axis direction along the X-coordinate rail and the movement of the Y-cursor 6 in the Y-coordinate axis direction along the Y-coordinate rail 2 are performed by pulse generators 28 provided on each of the XY-coordinate rails. is configured to be converted into an XY count pulse by The mechanism for supporting the carrier 8 so as to be movable relative to the surface of the table 4 in any direction within a plane parallel to the table 4 may have various configurations other than the structure shown in the drawings. 14 is
There are various configurations such as one using an ITV camera and a cathode ray tube, and one using a projector, and the present invention is not limited to the illustrated embodiment.

Next, the above-mentioned dotting device 12 will be explained with reference to FIG. 2.

30 is a board, to which a pulse motor 32 and a solenoid 34 are attached. A holding tube 36 is rotatably supported via a ball bearing in a vertical hole bored through the substrate 30, and a pulley 38 is formed at the lower end of the holding tube. An endless rope is strung between the pulley and the fixed pulley. 4
Reference numeral 0 designates an elevator tube that is slidably fitted onto the inner circumferential surface of the holding tube 36, and a dotting tool 42 is fixed to the lower end of this tube, located at the center of the tube. A pin 44 protruding from the holding tube 36 is fitted into a vertical groove 46 formed in the elevator tube 40, so that the elevator tube 40 is configured to interlock with the holding tube 36 in the rotational direction. 48 is a pencil holder, and cap 5
0 and member 52, it is held in the elevator tube 40 in an eccentric state with respect to its central axis. The pencil holder 48 is pressed against the tapered surface of the member 52 by the elasticity of the coil spring 54. Reference numeral 56 denotes a lift plate, one end of which is fixed to the lift pipe 40 by nuts 58 and 60 screwed into the upper part of the lift pipe 40, and the other end of the lift plate 56 is fixed to the drive shaft 62 of the solenoid 34. There is. The drive shaft 62 is biased in the upward direction by a coil spring 64, and the elevating plate 56 is in elastic contact with the stopper surface of the stopper member 66 in the upward position.

Next, the block circuit of this device will be explained with reference to FIG.

68 is a mode switching circuit, and when you press the program switch 24 to turn it on, it changes to "1".
Outputs a high level signal and switches the program switch 2
When 4 is OFF, a low level signal of "0" is output. 70 is an offset control circuit, which outputs one pulse from the output line 70C at the first pulse when a pulse is input to the input terminal 70b while the input terminal 70a is at a high level, and the input terminal 70a is at a high level. It is set so that when the second pulse is input to the end 70b, one pulse is output to the output line 70d. Output line 70c connects to control input 72a of register 72, and output line 70d connects to control input 74a of register 74. 76 is a subtraction logic circuit that subtracts the data at one input terminal A from the data at the other input terminal;
is connected to the output end of register 72, and the other input end B is connected to the output end of register 74. 7
8 is an offset counter, the input side of which is connected to the output side of the subtraction logic circuit 76, and the output side of the counter 78 is connected to the input terminal D of the subtraction logic circuit 82 via a group of AND gate circuits 80. are doing. The subtraction logic circuit 82 is configured to subtract (CD) the data at the other input terminal D from the data at one input terminal C and output the resulting value. 28 is a pulse generator, 84 is a counter, 26 is an XY coordinate value display unit, 88 is an interface, 90 and 92 are inhibit gate circuits, and 94 is an output device, which inputs the output data of the subtraction logic circuit 82 on a paper tape, etc. The information is input by punching or the like into the medium. 96 is a plot control circuit, which is connected to the solenoid 34 of the dotting instrument 12 and the pulse motor 32. The electronic circuit and the counter are connected as shown in the figure to form a processing device, and the processing device is arranged as an IC in the storage portion of the command keyboard 22.

Next, the operation of this embodiment will be explained.

First, offset values, that is, distance values Δx, Δy (the first
(see figure) will be explained below.

First, a sheet of paper is positioned on the table 4, and a point (X ₁ , Y ₁ ) (see FIG. 5) is marked at an arbitrary point on the sheet using an appropriate means. Next, holding the handle 10 in your hand, move the carrier 6 in a plane parallel to the surface of the table 4 so that the center of the index 18 coincides with the point (X ₁ , Y ₁ ). Next, the counter 84 is reset to zero, and the program switch 24 is turned on. As a result, the offset control circuit 7
0 input terminal 70a becomes High level, and input terminal 70b becomes conductive. Next, read switch 2
When 0 is pressed, one pulse is input to the input 70b of the offset control circuit 70, and one pulse is input to the input gate control input 72a of the register 72 from the output line 70c. As a result, the output data of the counter 84 (X ₁ =0, Y ₁ =0) is set in the register 72 . On the other hand, when the read switch 20 outputs "1", the output terminal of the gate circuit 92 outputs a signal of "1", and this signal is input to the plot control circuit 96.
As a result, both of the two input terminals of the plot control circuit 96 become "1", and the plot control circuit 96 supplies a pulse signal of "1" to the solenoid 34 of the dotting tool 12. When the solenoid 34 is energized, the drive shaft 62 descends, and in conjunction with this, the elevator tube 40 descends, and the tip of the dotting tool 42 plunges into the paper on the table 4 to form a dot (X ₂ , Y ₂ ). to score a point. At the same time, the lead held in the pencil holder 48 comes into elastic contact with the drawing paper. Next, with a slight delay, a pulse is supplied from the plot control circuit 96 to the pulse motor 32, the holding tube 36 rotates, and the core is moved to the dotting tool 4.
The plotted point (X ₂ ,
A round mark is drawn on Y ₂ ). Next, release the reading switch 20 to turn it off. Next, the carrier 8 is moved so that the center of the index 18 coincides with the point (X ₂ , Y ₂ ). At this time, the counter 84 selects a point (X ₁ , Y ₁ ) based on the XY coordinate axes.
The amount of movement Δx and Δy of the carrier 8 from the base is counted.
Next, press the reading switch 20 to turn it on. As a result, a pulse of "1" is output from the output line 70d of the offset control circuit 70, and the contents (X ₂ , Y ₂ ) of the counter 84, that is, Δx, Δy, are stored in the register 74.
The dotting tool 42 makes dots (X ₃ , Y ₃ ) on the paper. The subtraction logic circuit uses the contents of register 72 A
Subtract the contents B of register 74 from (A-B),
The result is set in offset counter 78. Points X ₁ and Y ₁ are 0, 0, points X ₂ and Y ₂ are (-30,
40), the offset counter 78 is set to X ₁ −X ₂ =0−(−30)=30=−Δx Y ₁ −Y ₂ =0−(+40)=−40=−Δy.
Note that Δx and Δy are calculated from the point (x ₁ , y ₁ ) to the dot point (x ₂ ,
y ₂ ) is the XY coordinate distance value. At this time, the output terminal of the mode switching circuit 68 is at a high level and each gate of the AND gate 80 group is in a conductive state, so the contents of the offset counter 78 are -Δx, -Δy.
is supplied to one input terminal D of the subtraction logic circuit 82. The subtraction logic circuit 82 calculates the content (-) of its input terminal D from the contents Δx, Δy of its input terminal C.
Δx, −Δy). That is, the output (CD) of the subtraction logic circuit 82 is as follows: X side output = (-30) - (30) = -60 Y side output = 40 - (-40) = 80.

The outputs of this subtraction logic circuit 82 are X-60 and Y80.
are digitally displayed on the XY coordinate value display section 86. The display value of this display section 86 (X=-60, Y=
80) is not the X and Y coordinate values for the center point X ₁ , Y ₁ (0, 0) of the index 18, but from the point X ₁ , Y ₁ (0, 0) at the tip of the dotting tool 42, that is, the dot direction point. X, Y
It displays coordinate values. That is, one input terminal D of the subtraction logic circuit 82 has -Δx and -Δy.
Since the value of is always supplied when the plot switch 24 is in the ON state, when the carrier 8 is moved in the desired direction, the display section 26 shows the point X ₁ at the tip of the dotting tool 42,
Displays the amount of movement in the XY coordinate axis direction relative to Y ₁ (0, 0). Therefore, the operator places the dotting instrument 1 at a predetermined point a on the drawing on the table or on the plotting paper.
If you want to set the origin of point 2, you can align the center of the index 18 with point a with the program switch 24 turned on, and then press the reset switch to reset the counter 84 to zero. At this time, the display section 26 displays X=-30 and Y=40. That is, after inputting the offset values Δx and Δy into the offset counter 78, simply align the center of the index 18 with the origin on the drawing and press the counter reset switch button to bring the zero position of the dotting instrument 12 to the origin on the drawing. Can be matched. In this embodiment, the offset values Δx and Δy are -Δx,
The polarity is converted to -Δy and set in the offset counter 78. The counter 84 is
The amount of movement of the center of the index 18 with respect to the origin 0, 0 is counted, and this count value is added to the offset values Δx, Δy in the subtraction logic circuit 82, and this added value is It will show the coordinate values. When the PRO switch 24 is turned OFF, the AND gates 80 are shut off, the count value C of the counter 84 is displayed as is on the display section 26, and the input terminal 70b of the offset control circuit 70 is reset. When the reading switch 20 is pressed to turn it ON in this state, the “1” pulse output from the reading switch 20 is input to the control unit of the output device 94 through the gate circuit 90 and the interface 88, and the contents of the counter 84 are input. That is, the XY coordinate values for the central origin 0, 0 of the index 18 are input to the tape. At this time, since the gate circuit 92 is cut off by the plot switch 24 OFF, the "1" pulse is not inputted to the plot control circuit 96 from the reading switch 20. That is,
When the plot switch 24 is turned OFF, this device becomes only for reading coordinates, and the dotting device 12 does not operate. Incidentally, when performing the dotting operation again, the offset values Δx and Δy are set in the offset counter 78 in the manner described above.

As is clear from the above explanation, the reading switch 2
0, offset control circuit 70, register 72, register 74, and subtraction logic circuit 76
constitutes an offset value input means for setting, in an offset counter 78, XY coordinate distance values Δx, Δy of the dotting point pointing point on the table 4 of the dotting instrument 12 with respect to a point on the table 4 surface to which the index 18 is directed. . The above Δx and Δy are the subtraction logic circuit 76
Then, the polarities are converted and outputted as -Δx and -Δy, and these outputs are set as they are in the offset counter 78 as -Δx and -Δy. Therefore, the subtraction logic circuit 82 adds the offset values Δx and Δy to the output of the counter 84.

Next, another embodiment will be described with reference to FIG.

In FIG. 4, 100 is an input device provided on the keyboard 22 and an offset counter 7.
8 to set desired XY coordinate values by manual switch operation. 28 is a pulse generation section, 84 is a counter, 102 is an addition logic circuit, 80 is an AND gate circuit group, 104 is a gate circuit, 106 is an AND gate circuit, 88 is an interface, 26 is an XY coordinate value display section, 94 is an output The apparatus includes a reading switch 20, a plotting switch 24, a mode switching circuit 68, a plotting control circuit 96, and a dotting instrument 12, which are connected as shown in the figure.

In the above configuration, the case where offset values Δx and Δy are input to the offset counter 78 will be explained.

First, a sheet of paper is positioned on the table 4, and a dot (X ₁ , Y ₁ ) is placed at an arbitrary position (see FIG. 5). Next, the program switch 24 is turned on, and the output terminal of the mode switching circuit 68 is brought into a high state.
Further, the carrier 8 is moved along the table 4 to align the center of the index 18 with the point (X ₁ , Y ₁ ), and in this state the counter 84 and the input device 100 are reset to zero. Next, turn on the reading switch 20 and output a pulse signal of "1" to the plot control circuit 96.
Enter. When a pulse is input to the plotting control circuit 96, the dotting tool 42 of the dotting device 12 descends and dots a dot (X ₂ , Y ₂ ) on the paper on the table 4. Next, the carrier 8 is moved to align the center of the marker 18 with the dot position (X ₂ , Y ₂ ). At this time, the counter ₈₄ calculates the dots _{(X 2 ,}
The XY coordinate values Δx and Δy of Y ₂ ) are counted, and the output is displayed on the XY coordinate value display section 26. The operator can know the values of Δx and Δy by looking at this display. The operator
Based on the display of 6, input the values of Δx and Δy using device 1.
The offset counter 78 is set by manually operating the 00 key button. The set value of the offset counter 78 is the ungate group 8.
0 to one input terminal of the addition logic circuit 102. Addition logic circuit 102 adds the contents of counter 84 and the contents of offset counter 78 Δx, Δy. This added value is displayed on the XY coordinate value display section 26. If offset values Δx and Δy are set in the offset counter 78,
The origin of the dotting device 12 can be easily set at a point on the table 4, such as a drawing, as shown in the first embodiment. Pro switch 24
When set to OFF, the AND gate circuit group 80 and the AND circuit 106 are cut off, and the gate circuit 1 is turned off.
04 becomes conductive. In this state, when the reading switch 20 is pressed to turn it ON, the interface 88 becomes conductive and the count contents of the counter 84 are supplied to the output device 94 through the interface 88, allowing the device to be used as a coordinate reader. can do. The main difference between this embodiment and the first embodiment is that in this embodiment, Δx and Δy are set to the offset counter 8 by manual switch operation.
0, whereas in the first embodiment, the values of Δx and Δy are offset values consisting of the read switch 20, the offset control circuit 70, the register 72, the register 74, and the subtraction logic circuit 76. It is produced as a value whose polarity is converted by the input means.

Since the present invention is configured as described above, by setting the distance values Δx and Δy of the dotting instrument in the X-Y direction with respect to the index in the offset counter, the X-axis of the dotting instrument can be adjusted.
- The origin, which is the reference point for measuring the amount of movement in the Y direction, can be extremely easily set at any point on the table, making it possible to perform dotting work more efficiently and with high precision by setting the dotting instrument against the index. Since there is no need for positioning, there is an effect that the assembly work of this device becomes easier.

[Brief explanation of the drawing]

The figures show a preferred embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a sectional view, FIG. 3 is a block circuit diagram, and FIG. 4 is a block circuit diagram showing another embodiment.
FIG. 5 is an explanatory diagram. 2...Y coordinate rail, 4...table, 6...
Y cursor, 8...Carrier, 10...Handle, 1
2...Dotting instrument, 14...Indicator device, 16...Reading surface, 18...Indicator, 20...Reading switch, 2
2...Command keyboard, 24...Prot switch, 26...XY coordinate display section, 28...Pulse generation section, 68...Mode switching circuit, 70...Offset control circuit, 72...Register,
74...Register, 76...Subtraction logic circuit,
80...AND gate circuit, 82...Subtraction logic circuit, 84...Counter, 86...XY coordinate value display section, 88...Interface, 90,9
2...Gate circuit, 94...Output device, 96...
Prot control circuit.

Claims (1)

[Claims] 1. The carrier 8, which is movable relative to the table 4 surface in any direction along the XY coordinate axis plane set on the table 4, and the amount of movement of the carrier 8 in the XY coordinate axis direction with respect to the table 4 are also counted. A counter 84, an XY coordinate value display section 26 that displays the count value of the counter 84, a dotting device 12 attached to the carrier 6 for dotting a dot on the drawing surface on the table 4, and the carrier 6.
Project the image of the four lower table surfaces onto the reading surface 16,
Index device 1 with index 18 formed on the reading surface 16
4, an offset counter 78, and a distance value in the XY coordinate axis direction of the dot pointing point on the table 4 of the dot tool 12 with respect to a point on the table 4 surface to which the index 18 is directed. an offset value input means for setting ΔxΔy in the offset counter 78; and an offset value input means for adding the value ΔxΔy set in the offset counter 78 to the count output value of the counter 84 and outputting the result, and the output side displays the XY coordinate values. A rectangular coordinate system characterized by comprising a logic circuit 82 connected to the offset counter 26, and a gate circuit 80 whose conduction and interruption can be freely controlled by operating a switch at the input end of the logic circuit 82 connected to the offset counter. Dotting device.