JPH0476795B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rail-type universal parallel ruler device for drawing parallel lines of inclined lines at a desired vertical pitch on a sheet of paper on a drawing board.

When drawing parallel lines at a desired vertical pitch using a universal parallel ruler device, if a display such as lighting of a lamp is performed each time the scale moves by a predetermined vertical pitch, the parallel lines can be drawn efficiently. As this type of device, the one shown in Japanese Patent Publication No. 58-55916 is known. However, when the scale is parallel to the reference coordinate axis, this device can draw parallel lines with the desired vertical pitch by specifying a set value using a matching display such as a lamp, but when the scale is parallel to the reference coordinate axis, If it is tilted to a desired angle (see Figure 4), the vertical pitch P1 of the slope line and the pitch P2 in the coordinate axis direction will be different, so even if you specify a set value, this setting value will not change the pitch P2 in the coordinate axis direction. Vertical pitch
This did not lead to the designation of P1. For example, if the setting value is specified as 20 mm, a match display will be made every time the scale moves 20 mm in the Y coordinate axis direction, but the vertical pitch of the parallel line drawn based on this match display, that is, perpendicular to the parallel line. Direction spacing is 20mm
isn't it. Therefore, when drawing inclined lines at equal intervals, it is necessary to calculate in advance a setting value corresponding to the vertical pitch of the parallel line to be drawn, and to specify this calculated value, which is extremely inconvenient.

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

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

Reference numeral 2 denotes a drawing board, to which an X rail 4 is fixed, and an X cursor 6 is movably attached to the X rail 4. The movement of the X cursor 6 along the X rail 4 is controlled by a known X encoder 8 (second
(see figure) is configured to be converted into a pair of pulse signals having a phase difference of 90 degrees. 1
0 is a Y rail connected to the X cursor 6, the Y rail 10 is set perpendicular to the X rail 4, and the Y rail 10 is movable along the X rail 4 on the drawing board 2. is supported by
12 is a Y cursor movably attached to the Y rail 10, and a head 14 is attached to this. Y rail 10 of the Y cursor 12
The movement along the axis is converted by a known Y encoder 16 into a pair of pulse signals having a phase difference of 90 degrees. The head 14
A scale mounting plate 18 is rotatably mounted to the base plate of the head 14, and scales 20 and 22 are fixed to the scale mounting plate 18. The head 14 of the scale mounting plate 18
The rotational movement relative to the substrate is controlled by a known encoder 24.
It is configured to be converted into a pair of pulse signals having a phase difference of 90 degrees and having directionality. As shown in FIG.
8. Connected to the X counter 32 via the polarity inversion circuit 30. Reference numeral 34 denotes a zero detection section for detecting the count value zero of the X counter 32 and inverting the flip-flop circuit of the polarity inversion circuit 30. Move the X cursor 6 to the first position along the X rail 4.
As you move to the right on the diagram, X encoder 8 will change to 90.
Outputs a pair of pulses with a degree phase shift. This pulse is waveform-shaped by the Schmitt circuit 26 and input to the direction determining circuit 28. The direction discrimination circuit 28 discriminates the direction of the pulses based on the phase difference of the output pulses of the encoder 8, and the polarity discrimination circuit 3
0 to output a pulse to the up count line of the X counter 32. The X counter 32 adds up the pulses, and this added value is digitally displayed on the X display section 38 by the driver 36. When the X cursor 6 is moved to the left along the X rail 4 in FIG. This causes the X counter 32 to subtract the pulse, and this subtracted value is digitally displayed on the X display section 38 by the driver 36. X cursor 6 is on Figure 1,
If you move to the left, the X counter 32 becomes zero, and the X cursor 6 moves to the left,
The polarity inversion circuit 30 is inverted by the zero detection unit 34, and the input path of the output pulse of the direction determination circuit 28 to the X counter 32 is switched. That is, when the X cursor 6 is positioned to the left in FIG. 1 with the zero count value of the X counter 32 as a reference, when the X cursor 6 moves to the left
The X counter 32 adds input pulses, and when the X cursor 6 moves to the right, the X counter 32 subtracts the pulses. As a result, the absolute movement amount of the X cursor 6 with respect to the zero position on the X rail 4 is digitally displayed on the X display section 38. The zero position of the X cursor 6 can be set to any position on the X rail 4 by resetting the X counter 32 by pressing the X reset switch 40 and turning it on. Based on the same principle as above, the Y display section 42 displays Y
The absolute amount of movement of the cursor 12 from the zero position on the Y rail 10 is digitally displayed. Further, based on the same principle, the absolute rotation amount of the scale mounting plate 18 relative to the head 14 substrate is digitally displayed on the display unit 44. The XY display sections 38, 42, and 44 are placed on the head 14, the Y cursor 12, or other appropriate locations. Said X encoder 8
is disposed at the end of the X rail 4, the Y encoder 16 is disposed at the end of the Y rail 10, and the encoder 24 is disposed inside the head 14. Various electronic circuits connected to the output sides of the encoders 8, 16, and 24 are integrated and mounted on a circuit mounting plate within a cover attached to the head 14. 46
is a latch circuit, and the circuit 46 is connected to the latch key 4.
When 8 is pressed, X connects to the latch circuit 46.
The counter 32, the Y counter 50, the output count values X1, Y1 of the counter 52, and the pitch value α set by the α pitch designation key 54 are stored and held. 56, 68, 70 are arithmetic circuits, 72
is an arithmetic circuit which performs division D/B of the data D and B input to its two input terminals, and calculates the quotient and remainder of an integer. A detection circuit 74 detects zero in the remainder output of the arithmetic circuit 72, and is configured to output a signal of "1" when the remainder of the D/B is zero. Reference numeral 60 denotes a display means consisting of a lamp attached to the head 14, and is configured to be turned on by the output signal of the detection circuit 74. The display means 60 operated by the output of the detection circuit 74 may be not only a lamp but also a buzzer, or any other device whose output signal can be recognized visually and audibly.

Next, the operation of this embodiment will be explained.

First, scale 20 is
The counter 52 is set parallel to the coordinate reference line 62, and in the parallel state, the counter 52 is reset to zero. To set the scale 20 parallel to the Mark a dot on the paper on the drawing board 2 using the mark as a mark, then move the Y rail 10 by an arbitrary amount along the X rail 4, and then mark a dot on the paper using the above point on the scale 20 as a mark. attach After that, connect the two points on the paper with a straight line. Next, scale mounting plate 1
8 is released and the scale 20 is aligned with the above-mentioned straight line, the scale 20 becomes parallel to the X coordinate reference line 62. In this state, the reset switch 62 is pressed to reset the counter 52 to zero. After completing the scale angle zero setting work described above, if you want to draw a number of parallel lines on paper at a desired vertical pitch α with inclined straight lines forming a desired angle of inclination with respect to the X coordinate reference line 62, first, α
Specify the pitch value α with the pitch specification key 54, set the angle of the scale 20 to a desired value, and fix the scale mounting plate 18 to the substrate side of the head 14, so that the scale mounting plate 18 will not rotate accidentally. Try not to do that. In this state, the head 14
, move the scale 20 to the desired line drawing start position on the paper, press the latch key 48 to insert it, and use a writing instrument to insert the scale 20.
Draw a first straight line 64 along 0. Latch key 4
When 8 is thrown, the counters 32, 50,
52 count values X1, Y1, and designated key 5
The output pitch value α of 4 is latched in the latch circuit 46. The position of the scale 20 at this time becomes the reference position. The above X1 stored in the latch circuit 46,
Y1, is input to the arithmetic circuit 56. Next, for example, the head 14 is moved upward in FIG. Due to the movement of the head 14, the arithmetic circuit 56
The count value X of the X counter 32 is input.
The arithmetic circuit 56 calculates the following based on the input signals X1, Y1, and X: C=(X−X1)tan+Y1 (1). C in the above equation (1) is the Y coordinate value of an arbitrary point on the straight line 64. That is, in FIG. 3, C=A+Y1 and A/X-X1=tan Therefore, A=(X-X1)tan Substituting the above A into the above C=A+Y1, equation (1) is obtained.

The value of C is input to the arithmetic circuit 70, and the value Y of the Y counter 50 is also input to the arithmetic circuit 70, and the arithmetic circuit 70 calculates D=Y-C. D indicates the amount of movement of the scale 20 in the direction of the Y coordinate axis 68 with respect to its reference position. on the other hand,
The calculation circuit 68 calculates B=α/cos. This B is a pitch value in the Y coordinate direction corresponding to the vertical pitch α value. The data B and D are input to an arithmetic circuit 72, where a division of D/B is performed, and the arithmetic circuit 72 calculates an integer quotient and a remainder. If the remainder is zero, that is, when the scale 20 moves in the perpendicular direction by an integral multiple of α (in the Y coordinate axis direction by an integral multiple of B),
The remainder "O" detection circuit 74 outputs a signal of "1", and the display means 60 lights up. The operator stops moving the head 14 when the display means 60 first lights up, and while the display means 60 is lit,
By drawing a line along the scale 20, a straight line 66 having a vertical pitch of α can be drawn perpendicular to the straight line 64. Next, move the head 14 as shown in Figure 3.
Moving upward, the user looks at the next display on the display means 60 and draws a straight line having a vertical pitch of α with respect to the straight line 66. In this way, parallel lines of vertical pitch α are sequentially drawn based on the display on display means 60.

Note that the above is a case in which parallel lines are drawn based on the amount of movement of the head 14 in the Y-coordinate reference line direction.
The amount of movement of the head 14 in the direction of the X coordinate reference line can also be used as a reference. That is, in the above embodiment, the drive signal to the display device 60 is generated based on the pitch B in the Y coordinate axis direction and the movement amount D of the scale 20 in the Y coordinate axis direction from the reference position. As shown in FIG. 6, a drive signal to the display device 60' can be generated based on the pitch B' in the direction of the X coordinate axis and the amount of movement D' in the direction of the X coordinate axis from the reference position of the head 14. . in this case,
The arithmetic circuit 56' is the latch output of the latch circuit 46.
Based on X1, Y1, and the value of the Y counter, calculate C=(Y-Y1) tan + '=X-C is calculated. On the other hand, the calculation circuit 68' calculates B'=α/sin.

The above values of B' and D' are calculated in the arithmetic circuit 72'.
A division of D'/B' is performed. In Figure 6, Y-Y1/A=tan, so A=Y-Y1/tan=(Y-Y1
) tan From this, the above equation (2) can be obtained. Also, since α/B′=sin, B′=α/sin is obtained. Also, X=A+X1-B' = (Y-Y1) tan-α/sin+X1 By subtracting the value of C above from this value of . This movement amount D' has a negative value.

As is clear from the above description, the X encoder 8, the Schmitt circuit 26, the direction determination circuit 28,
The polarity inversion circuit 30, the zero detection unit 34, the X reset switch 40, and the
4. The zero detection section 86, the Y reset switch 88, and the Y counter 50 constitute the Y movement data generating means, and the encoder 24, the Schmitt circuit 90, the direction discrimination circuit 92, the polarity inversion circuit 94, the zero detection section 96, and the reset switch. 62 and counter 5
2 constitutes an angle data generating means. still,
The XY encoder constituting these means is not limited to the incremental type shown in the figure, but a commercially available absolute type can be used. The latch circuit 46 and latch key 48 constitute a scale reference position data setting means. Further, the α pitch designation key 54 constitutes vertical pitch setting means. In addition, the arithmetic circuit 5
6, 68, 70, 72, and a detection circuit 74, based on the data of each of the above-mentioned means, detect position data that is an integral multiple of the vertical pitch value in the vertical direction with respect to the scale of the reference position, and detect the XY movement. When the output position data of at least one of the data generating means match, the pitch display signal generating means outputs a matching signal.

Since the present invention is configured as described above, once a desired pitch position is specified, even if the scale is tilted with respect to the reference coordinate axis, the amount of movement of the scale in the perpendicular direction to the reference position matches the set pitch value. Since the display is performed by the display device, parallel lines of a desired vertical pitch can be drawn efficiently, and the object described at the beginning can be achieved.

[Brief explanation of the drawing]

The figures show preferred embodiments of the present invention; FIG. 1 is a plan view, FIG. 2 is a block circuit diagram, FIG. 3 is an explanatory diagram, FIG. 4 is an explanatory diagram, and FIG. 5 is a diagram showing another embodiment. The block circuit diagram shown in FIG. 6 is an explanatory diagram. 2...Drawing board, 4...X rail, 6...X cursor, 8...X encoder, 10...Y rail, 1
2...Y cursor, 14...Head, 16...Y encoder, 18...Scale mounting plate, 20, 22
... Scale, 24 ... O encoder, 26 ...
Schmitt circuit, 28... Direction discrimination circuit, 30...
...Polarity inversion circuit, 32...X counter, 34...
Zero detection section, 36...driver, 38...X display section, 40...X reset switch, 42...Y
Display section, 44...Display section, 46...Latch circuit, 48...Latch key, 50...Y counter,
52...Counter, 54...α pitch specification key, 56, 68, 70, 72,... Arithmetic circuit, 6
0...display means, 62...reset switch,
64...straight line, 66...straight line, 74...remainder zero detection circuit.

Claims (1)

[Claims] 1 X movement data generating means for outputting the movement amount of the Y rail 10 along the X rail 4; Y movement data generating means for outputting the movement amount of the head 14 along the Y rail 10; Head 14
a reference position for setting desired position data of the scale as reference position data based on the data of each of the means; a data setting means; a vertical pitch setting means for setting a vertical pitch of parallel lines; and a vertical pitch setting means for setting a vertical pitch of parallel lines; a pitch display signal generating means that outputs a coincidence signal when the position data and the output position data of at least one of the XY movement data generating means match; and an output of the pitch display signal generating means. A rail type flexible parallel ruler device comprising a driven display means.