JPS60150945A - Numerically controlled machine tool - Google Patents

Abstract

PURPOSE:To enable characters and figures drawn by hand to be machined on the surface of the material to be machined easily, by displaying the characters and figures which are input from a tablet for coordinate input on a plane type display which is overlapped and further by machining these characters and figures of the material to be machined. CONSTITUTION:When an operational switch 204 of a magnetic pen 200 is switched on, the position data which are coordinate values in X and Y direction and is stored in a processor 600 are delivered to and stored in a display memory 501 of a display control circuit 500. They are sequentially read out and delivered to the X- and Y-direction drivers 503, 504 and the positions indicated on the tablet 100 are displayed on a display 300. That is, the characters and figures drawn by a magnetic pen 200 on the display 300 is displayed by light on the display 300. Furthermore, each coordinate value of the position data stored in the processor 600 delivered to an NC drilling machine 800 and the position of the metal plate which corresponds to the first coordinate value is located right below the drill, and the metal plate is moved according to the information. Thus the surface of the metal plate is machined by the drill easily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an NC machining device that can easily cut handwritten characters and figures onto the surface of a workpiece.

(Prior art and problems) Among conventional NG (numerical control) machining devices, devices that cut arbitrary characters or figures on the surface of a workpiece have the ability to cut arbitrary characters or figures on the surface of a workpiece. It is relatively easy to select and execute the operation, but if you want to cut other characters or shapes, such as handwritten characters or handwritten figures, you can break down the handwritten characters or handwritten figures into straight lines or arcs, and then cut them. Because the coordinate values, radius, etc. of the start point and end point had to be entered into the program from the keyboard,
It can only be handled by an experienced person, and even for an expert, it is time consuming, has poor productivity, and has the disadvantages of high cost.

(Object of the Invention) In order to eliminate the above-mentioned drawbacks of the conventional art, the present invention includes a tablet for inputting coordinates and a flat display superimposed on the tablet, and characters and figures input from the tablet are displayed on the display. It is designed to both display and cut into the workpiece, and its purpose is to easily cut handwritten characters and figures onto the surface of the workpiece.
Our objective is to provide machine equipment. The drawings will be described in detail below.

(Example) FIG. 1 is a perspective view showing an outline of an embodiment of the present invention.

In the figure, 100 is a tablet for inputting coordinates, and 200 is a position designating magnetic generator (
300 is a flat display superimposed on the tablet 100J, 4 is hereinafter referred to as a magnetic pen.
00 is a position detection circuit that detects the coordinate value on the tablet 100 specified by the magnetic bevel 200, 500 is a display control circuit that drives the display 200, and 600 is a processing device! ,7
00 is an R8232C ink face unit, 800 is an NC machining device main body, such as an NC (numerically controlled') drilling machine, and 900 is a workpiece, such as a metal plate.

FIG. 2 is a plan view showing the structure of the tablet 100, and FIG. 3 is a sectional view taken along the line A--A in FIG. In the figure, reference numeral 101 indicates a magnetostrictive transmission medium in the X direction, and reference numeral 102 indicates a magnetostrictive transmission medium in the Y direction, and a plurality of them are arranged substantially parallel to each other. Any ferromagnetic material can be used as the magnetostrictive transmission media 101 and 102, but in order to generate strong magnetostrictive vibration waves, a material with a large magnetostrictive effect, such as an amorphous alloy containing a large amount of iron, is particularly desirable. Further, it is preferable to use a material with a small coercive force that is difficult to magnetize even when a magnet is brought close to the material.

Examples of amorphous alloys include Fe69CO4°B
, 4Si, (atomic %), Fe8. B+3.5 8
'3.5 C2 (atomic %) etc. can be used. The magnetostrictive transmission medium 101, 102 has an elongated shape, and its cross section is preferably a rectangular thin strip or a circular linear shape, and in the case of a thin strip, the width (several mmF-degrees) and thickness are approximately several micrometers to several tens of meters. It is easy to manufacture and has good properties.Amorphous alloys can be manufactured into thin pieces with a thickness of 20 to 50 μm, so they can be cut into thin plates or lines.In this example, A magnetostrictive transmission medium with a width of 2 mm and a thickness of 0.02 mm made of FCll, B, 35Si3°C2 (atomic %) is used.

103 and 104 are elongated cylindrical reinforcing members made of synthetic resin or the like, and accommodate the m strain transmission media 101 and 102 therein, respectively.

105 is a reinforcing material 103 at one end of the li & strain transmission medium 101
X-direction first electromagnetic transducers, for example, X-direction first coils, arranged in the X direction. This X-direction first coil 105 (which is twisted between the adjacent vertical reinforcing members 103 and wound in the opposite direction around the adjacent magnetostrictive transmission medium 101fj'i,
Each magnetostrictive conduction occurs when a current is applied to 5)! When a magnetic flux generated from a portion corresponding to the medium 101 or a magnetic flux in one direction is applied to the coil 105, the voltage generated in each portion is in the opposite direction. Therefore, pulse noise generated when a pulse current is passed through the coil 105 and induction from the outside cancel each other out between adjacent portions of the coil 105 and are weakened. Note that although the number of turns is one in the illustrated example, it may be wound two or more times.

This X-direction first coil 105 is for generating instantaneous magnetic field fluctuations to generate magnetostrictive imaging waves at each winding portion of the magnetostrictive transmission medium 101, and one end of the coil 105 is used for position detection, which will be described later. It is connected to a pulse current generator in circuit 400, and the other end is grounded.

Further, 106 is a reinforcing member 1 at one end of the magnetostrictive transmission medium 10.2.
The Y-direction first electromagnetic transducer, for example, the Y-direction first coil, is arranged on the Y-direction first coil, which is twisted between adjacent reinforcing members 104 and wound in the opposite direction for each adjacent magnetostrictive transmission medium 102. . Like the coil 105, one end of this Y-direction first coil 106 is connected to a pulse current generator, and the other end is grounded. Note that the action is similar to that of the coil 105.

Reference numerals 107 and 108 are magnetic generators for specifying reference positions, such as square magnets, and
05 and the first Y direction of the magnetostrictive transmission medium 102.
This is for applying a bias magnetic field parallel to the longitudinal direction to each winding portion of the coil 106. The reason why a bias magnetic field is applied in this way is to enable generation of a large magnetostrictive vibration wave with a small current and to specify the generation position of this magnetostrictive vibration wave. That is, the magnetostrictive transmission medium 101°10
The electromechanical coupling coefficient of 2 (a coefficient indicating the conversion efficiency from mechanical energy to electrical energy, or from electrical energy to mechanical energy) reaches its maximum when a bias magnetic field is applied, for example, as shown in Fig. 4. Such a magnetic bias is applied to the first coil 105 in the X direction. By applying the force to the wound portion of the first coil 106 in the Y direction, the magnetostrictive vibration wave can be generated more efficiently.

109 is a second electromagnetic transducer, for example a coil, which is disposed on the reinforcing member 103 over a wide range of the magnetostrictive transmission medium 101 and is oriented in the 7CX lj direction. The coils 109 are wound on each magnetostrictive transmission medium 101 in the same direction (outward winding in this embodiment), and are connected in series so that adjacent coils have opposite polarities. Therefore, the direction of the voltage and current generated in each coil 109 when magnetic flux in one direction is applied to all the coils 109, or the direction of the magnetic flux generated in each coil 109 when current is passed through the entire coil 109 are adjacent to each other. The coils are in opposite directions, and the external induction and N sound cancel each other out between adjacent coils and are weakened.

The winding pitch of the coil 109 is the same as that of the first coil 10 in the X direction.
It is wound gradually more densely from one end on the side close to 5 toward the other end on the opposite side to compensate for the decrease in induced voltage due to attenuation of magnetostrictive vibration waves. Generally, in order to increase the induced electromotive force, it is preferable that the winding pitch be large. This X-direction second coil 109 is for detecting the induced voltage due to magnetostrictive vibration waves propagating through the magnetostrictive transmission medium 101, and one end is connected to the pulse detector of the position detection circuit 400, and the other end is grounded. , the wound area becomes the position detection area.

Further, 110 is a Y-direction second @ corner transducer disposed on the reinforcing member 104 over a wide area of the magnetostrictive transmission medium 102;
For example, the coils 110 are wound on each magnetostrictive transmission medium 102 in the same direction (outward winding in this example), and the polarity of connection is opposite between adjacent coils (in series). Also, this coil 110
The winding pitch is such that the winding pitch is gradually denser from one end on the side close to the first coil 104 in the Y direction to the other end on the opposite side, and one end is connected to the pulse detector of the position detection circuit 400. and the other end is grounded. Note that the action is similar to that of the coil 109.

The X-direction position detection unit, which is composed of the X-direction magnetostrictive transmission medium 101, the reinforcing material 103, the X-direction first coil 105, and the X-direction second coil 109, is constructed of a non-magnetic metal case 11.
The magnetostrictive transmission medium 102, the reinforcing material 104, the first coil 106 in the Y direction, and the Y
The Y-direction position detection section consisting of the second coil 110 is superimposed orthogonally on the X-direction position detection section, and is fixed with an adhesive or the like as necessary. Further, the reference position specifying angle magnets 105 and 106 are connected to the magnetostrictive transmission medium 101.
It is fixed to the inner bottom surface of the metal case 111 so as to face the ends of the magnetostrictive transmission media 101 and 102.
They may be arranged in parallel in the L direction, below, and on the sides. The upper part of the metal case 111 is covered with M112 made of non-magnetic metal.

FIG. 5 is a sectional view showing the structure of magnetic pen 20.0.

In the figure, 201 is a cylindrical bar magnet, which is attached to the tip of a pen-shaped container 202 with its north pole facing down. Further, 203 is a signal generator that generates a predetermined signal indicating the start of measurement, which is generated by turning on the operation switch 204, and the signal indicating the start of measurement is transmitted from an ultrasonic transmitter 205 to position detection, which will be described later. It is converted into an ultrasonic signal and sent to a receiver in the circuit 400.

The display 300 may be, for example, a well-known 71 display in which a liquid crystal medium is interposed between a plurality of crossed horizontal and vertical electrodes.
~RiX-type liquid crystal display panels are used. The display area of the display 300 is approximately equal to the inputtable range of the tablet 100, and the coordinates of the chair 300 are stacked under L so that the head of the chair matches the coordinate position of the tablet 100.

The NG drilling machine 800 has a metal plate 900 fixed on a table that can be moved to any position by a pulse motor or the like.
A drill that rotates at high speed is applied to the surface and the table is moved to make holes and cut.
Here, a known TNV-50 (manufactured by Seiro Machinery, Japan) NO drilling machine is used.

FIG. 6 is a circuit block diagram showing the main parts of the device. Below is a description of the circuit block and J (1J=6 of the present invention).
``7 V) I will explain the work in detail.

Now, a metal plate 900 is fixed on the table of the NO drilling machine 800, and a magnetic pen 200 is attached to the display 3.
(') Distance in the X-axis direction from the coil surface center of the first coil 105 in the X direction of the tablet 100 through O, and further on the Y-axis from the coil surface center of the first coil 106 in the Y direction. Magnetostrictive transmission medium 10 with a distance p2 in the direction
2, and applies magnetism to the magnetostrictive transmission medium 101 and 102 to the extent that the electromechanical coupling coefficient increases.J'
Ru.

In this state, when the operation switch 204 of the magnetic pen 200 is turned on, the transmitter 205 transmits an ultrasonic signal indicating the start of measurement. The ultrasonic signal is transmitted to the receiver 4
The signal is received at 01, converted into an electrical signal, amplified and waveform-shaped by receiver 402, and sent to input buffer 403. The control circuit 404 reads the measurement start signal from the input buffer 403, recognizes the start of measurement, and outputs the measurement start signal to the output buffer 74.
05, the counter 406 is reset, and the X-direction pulse current generator 407 is turned off. The counter 406 starts counting the clock pulses of the clock generator 408 (pulse repetition frequency is, for example, 100 Ml-1z).

When the X-direction pulse current generator 407 operates and a pulse current is applied to the X-direction first coil 105, an instantaneous magnetic field fluctuation occurs in the X-direction first coil 105, which causes the A magnetostrictive vibration wave is generated in the winding portion of the first coil 105. This magnetostrictive vibration wave propagates along the longitudinal direction of the magnetostrictive transmission medium 101 at a propagation speed (approximately 5000 m/sec). and,
During this propagation, conversion from mechanical energy to magnetic energy is carried out at the part of the magnetostrictive transmission medium 101 where the magnetostrictive 1 linear wave exists, depending on the magnitude of the electromechanical coupling coefficient at that part, and therefore An induced electromotive force is generated in the direction second coil 109 .

FIG. 7 shows an example of the temporal change in the induced electromotive force generated in the second coil 109 in the X direction, assuming that the time when the pulse current is applied to the first coil 105 in the X direction is 1=0. As shown in the figure, the amplitude of the induced electromotive force becomes large immediately after time t-Q and around 11 to 12 seconds after time to, and becomes small at other times. The amplitude of the induced electromotive force becomes large immediately after time ○, when the first coil 1 in the X direction
05 and the second coil 109 in the X direction, and the time 1-1. The reason why the amplitude of the induced electromotive force (induced voltage due to the m-strain vibration wave) of 1 nicle becomes large at ~t2 is that the magnetostriction vibration wave generated in the first coil 1050 winding portion in the X direction propagates through the magnetostriction transmission medium 101. This is because the magnetic pen 200 reaches the vicinity directly below the magnetic pen 200, and the electromechanical coupling coefficient becomes large at that portion. When the magnetic pen 200 is moved along the longitudinal direction X of the magnetostrictive transmission medium, the voltage induced by the magnetostrictive vibration waves also moves on the time axis accordingly.

Therefore, by measuring the time from time to to t1 to t, the position in the X direction specified by the magnetic pen 200,
In other words, a distance sentence can be calculated. The propagation time for calculating the position is, for example, as shown in FIG. 7, at the time 13. when the amplitude of the induced voltage due to magnetostrictive vibration becomes smaller than the threshold value -El. The time point t4, which is greater than the threshold value F1, may be used, or the zero-crossing point t5 may be used.

The induced electromotive force generated in the X-direction second coil 109 described above is input to the X-direction pulse detector 7109. The X-direction pulse detector 409 is an amplifier.

It consists of a comparator, etc., and when the induced electromotive force is detected, for example, at the above-mentioned threshold [, Iff, i.e., the positive polarity portion of the induced S voltage caused by the magnetostrictive oscillation wave, the output is set to a high level. do. When the control circuit 404 reads this high-level signal through the input balanoor 403, it outputs a stop signal to the counter 406 through the output buffer 405 to stop counting. At this time, the counter 406 obtains a digital value corresponding to the time from the time when the pulse current is applied to the first coil 105 in the X direction until the induced voltage due to the magnetostrictive vibration wave appears in the second coil 109 in the X direction. Also, this value means that the magnetostrictive vibration wave is approximately 5000I per second.
The first coil in the X direction moves at a speed of 10.
1 in the X direction from 5 to Magnetic Ben 200? l'i m
It corresponds to i. The X-direction coordinate value thus obtained as a digital value by the counter 406 is read into the control circuit 404 via the input buffer 403, and further sent to the processing device 600 where it is temporarily stored.

Next, the control circuit 404 resets the old counter 406, operates the Y-direction pulse current generator 410, monitors the output of the Y-direction pulse detector 411, and determines the Y-direction coordinate of the magnetic pen 200 in the same manner as described above. A value is obtained and sent to the processing device 600.

Thereafter, by repeating this process, it is possible to obtain position data that is instructed one after another.

On the other hand, position data consisting of coordinate values in the X and Y directions stored in the processing device 600 is sent to the display memory 501 of the display control circuit 500, arranged and stored in a certain order, and is stored in the control circuit 502. The signals are sequentially read out by timing pulses from the X direction driver 503 and the Y direction driver 504. Moreover, these X direction drivers 503. A scanning pulse generated by the scanning circuit 505 at the same time as the timing pulse of the control circuit 502 is input to the Y direction driver 504, and each driver 503, 504 controls the display 300.
The electrodes corresponding to the X-direction and Y-direction coordinate values are driven, and the indicated position on the tablet 100 is displayed at the same position on the display 300. Therefore tablet 10
The handwriting of letters and figures drawn with the magnetic ben 200 from a part of the f display 300 superimposed on the display 30
The same handwriting is displayed on 0 by optical display.

On the other hand, (i'?
The purchase data, each coordinate value of the plurality of drills 1 to 9) forming the figure (14), is transferred to the NG drilling machine 800 via the well-known R8232C interface 700.
I can't send it to. When the NG drilling machine 800 receives the position data, it moves the table and moves the metal plate 900,
The part corresponding to the first coordinate 1 axis of the position data is positioned directly under the drill, and then the drill is lowered by a predetermined amount fi1 to drill a hole at the position on the surface of the metal plate 900 14-1. After this, remove the table or 1) Sequentially drill the metal plate 900 into the parts corresponding to the coordinate values in the position data.
7, and cut the surface of the metal plate 900 with a drill. When a series of coordinates is completed, -
F-1, turn the drill upside down and pull it out from the surface of the metal plate 900, and repeat the same operations as above. Therefore, the characters and figures written with the magnetic pen 200 are displayed on the metal plate 90.
The surface of 0 is machined.

Furthermore, since the position data is temporarily stored in the processing device 600, it is possible to apply the same handwritten characters and figures to a large number of metal plates, and it is also possible to create unique products by inputting handwritten notes to the stones. You can also make Alternatively, the position data may be stored in an external storage device (not shown), retrieved when necessary, displayed on the display 300 for confirmation, and then cut into the metal plate 900.

Further, the magnetic ben 200 only needs to apply a slight bias magnetic field to the magnetostrictive transmission media 101 and 102 of the tablet 100, and does not need to be particularly close to the tablet 10C (including the display 300). Therefore, a raw metal plate on which handwritten letters and figures have already been made (but only those other than ferromagnetic materials) is placed on the display 300, and the cutting marks of the letters and figures are marked with a magnetic pen. 200, the coordinate values can be input and overwritten, and a metal plate with the same characters and figures as the original can be obtained.

In addition, the processing device 600 is equipped with character editing and graphic processing functions.
In addition, the characters and figures entered on the tablet 100 can be modified, added, and deleted, and the position data of the modified characters and figures can be sent to the NG drilling machine 800 for cutting. It's okay.

In the embodiments described so far, tablets l to 100 have #
TX direction first coil 105. Y direction first coil 106
is used for generating magnetostrictive vibration waves,
9. Although the Y-direction second coil 110 is used for detecting the 11 strain vibration waves, it may be reversed. In that case, magnetostriction vibration waves are generated directly under the magnetic bend 200, and the second coil 109
An induced voltage will be generated at 110 degrees.

In addition, in the present invention, t(magnetic flux) fluctuation is defined as voltage.

The cord 9 device that converts changes in current, etc., or converts changes in voltage, current, etc. into magnetic field fluctuations is called an electromagnetic transducer. In the example, a coil was used as an electromagnetic transducer, but
It is not limited to this, and in particular, the first coil in the X direction, the first coil in the Y direction,
If a magnetic head is used instead of the first coil in the direction, the magnetic flux leaking to the outside will be extremely reduced, making it possible to detect the coordinate position with higher precision.

(Effects of the Invention) As explained above, according to the present invention, in the NG machining device that applies liquid and cuts predetermined characters and figures on the surface of L objects,
A tablet formed by overlapping a plurality of magnetostrictive transmission media arranged substantially parallel to each other so as to be substantially orthogonal to the X direction and the Y direction, and disposing electromagnetic transducers over a wide range thereof, and position detection of the tablet a position that generates magnetism to an extent that increases the local electromechanical coupling coefficient between the planar display superimposed on the tablet and the magnetostrictive transmission medium of the tablet 1-; A pulse current is applied to the designated magnetic generator and the electromagnetic transducer of the tablet to generate 92 magnetostrictive vibration waves between the M levels of each magnetostrictive transmission medium or at the position designated by the ilrl position designated magnetic generator. by detecting the time from when the magnetostrictive vibration wave is generated until an induced 8J voltage due to the magnetostrictive vibration wave appears at the position specified by the position specifying magnetic generator of the electromagnetic transducer or at the reference position U. Since it is equipped with a position detection circuit that detects the specified coordinate values of the magnetic generator for position specification, and a display control circuit that drives the display to display the position corresponding to the coordinate values, it is not as complicated as the conventional one. Magnetic valve for positioning on display without programming required! 1: You can input any handwritten characters or hand-drawn figures just by operating the device, and you can cut the surface of the workpiece while checking the input results on the display, making it easy even for non-experts. It is possible to cut handwritten characters and handwritten figures, improving productivity and reducing costs, and it is also possible to input coordinates for each workpiece to create unique products. . In addition, since the display is stacked on top of the tablet, there is no inconvenience such as characters being displayed twice due to parallax, and the magnetic generator for digit 4 designation is different from the tablets 1 to 1 which use conventional magnetostrictive vibration waves. Since there is no need to take out the timing at which magnetic field fluctuations are applied or magnetic field fluctuations are detected, and the system can be cordless, the operability of coordinate input can be greatly improved. Furthermore, since the magnetic generator for position specification only applies a slight bias magnetic field to the tablet and does not need to be particularly close to the tablet, it is possible to use the original workpiece with handwritten characters or figures already cut on the display (however, , limited to materials other than ferromagnetic materials), and trace the cut marks of characters and figures with a magnetic generator for position specification, you can input the coordinate values, and the same characters as the original can be entered. It has the advantage that it is possible to obtain products with shapes and shapes applied to them.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view showing an overview of the NO machining device, Fig. 2 is a plan view showing the structure of a tablet, and Fig. 3 is a diagram 2-A. A cross-sectional view along the line, Figure 4 is a characteristic diagram of magnetic bias versus electromechanical coupling coefficient,
Figure 5 is a sectional view of the structure of the magnetic pen, and Figure 6 is '! A circuit block diagram of the equipment part, FIG. 7 shows the second coil 10 in the X direction.
9 is a diagram showing an example of a temporal change in induced electromotive force generated in FIG. 100...Tablet 200...Magnetic pen 300...Display 400...Position detection circuit 500...Display control circuit 600... ...Processing device 700...R8232C Intuff T Isconit 800...NG drilling machine. Figure 4 0 2 4 6 B 10 Figure 5

Claims (1)

[Claims] In an NC machining device that cuts predetermined characters and figures on the surface of a workpiece, a plurality of magnetostrictive transmission media arranged approximately parallel to each other are superimposed so as to be approximately orthogonal to the X and Y directions. A tablet with electromagnetic transducers disposed over a wide range] has a display area that is almost the same as the position detection area of the tablet, and a flat display superimposed on the tablet; a position specifying magnetic generator that generates magnetism to an extent that increases the local electromechanical coupling coefficient of the magnetostrictive transmission medium of the tablet; and a position specifying magnetic generator that applies a pulse current to the electromagnetic transducer of the tablet to create a reference for each of the magnetostrictive transmission media. A magnetostrictive vibration wave is generated at the position specified by the magnetic generator for position designation of the electromagnetic transducer after the magnetostriction vibration wave is generated. A position detection circuit that detects the designated coordinate values of a magnetic generator for position designation by detecting the time until an induced voltage by a magnetostrictive vibration wave appears at the mold position, and displays a position corresponding to the coordinate value. and a display control circuit for driving the display.