JPH0519827A - Numerical controller - Google Patents

Abstract

PURPOSE:To obtain the small-sized numerical controller which enables various programs to securely and easily be altered (edited) without any error and securely inhibits the programs from being altered in normal operation. CONSTITUTION:The numerical controller consists of an NC unit 20 and an NC control board 1 which perform numerical control by using a memory card where the programs are stored; and the stored data of the memory card is provided with a permission information address and only when the memory card stored with specific data in the permission information address is loaded, the program specified with the specific data can be edited.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus operated by numerical control, for example, a numerical control apparatus used for a machine tool or a carrier.

[0002]

2. Description of the Related Art In a conventional numerical control device driven by numerical control, for example, an NC machine tool, arithmetic processing is performed on various commands to control the positioning of a tool with respect to a workpiece and the movement process of the tool. Performs contour control, etc. Programs for performing these various controls in a conventional numerical controller are stored in a perforated tape, which is a numerical control tape, a floppy disk, etc., and various numerical controls are performed using these storage media. A program having numerical values for designating a moving position, speed, etc. of a tool stored in a storage medium and numerical information composed of symbols indicating types of motions is processed by a numerical control device and is controlled by a plurality of control targets. It is transmitted to the servo motor etc. N that incorporates these servomotors
The machining unit of the C machine tool forms a workpiece into a preset complicated shape according to a predetermined program stored in advance.

[0003]

As described above, the conventional numerical control apparatus can change various numerical information stored in the numerical control tape, the magnetic disk or the like to obtain various kinds of objects to be machined. The products are formed in high precision with a high degree of precision to produce a wide variety of products. Therefore, in the numerical control device, it is possible to easily edit the program for machining the workpiece, and the numerical control device is surely prohibited from being changed in the normal operation. It was necessary to get. In order to achieve this object, the conventional numerical control device is provided with a protect key switch and a protect key for executing editing accompanied by a change in program. As described above, since the conventional numerical control device is provided with the protect mechanism such as the protect key switch and the protect key, there is a problem that the device becomes large and the program editing operation becomes complicated. The present invention has been made to solve the above problems, and it is an object of the invention to obtain a numerical control device that is small and has excellent operability, and that facilitates program editing processing and program management. To aim.

[0004]

A numerical controller according to the present invention is a memory card as a removable storage medium in which data is stored, and a card reader for reading data from or writing data to the memory card. When the writer means, the program memory means for transmitting and storing the data read by the card reader / writer means, and the predetermined identification data included in the data of the memory card stored in the program memory means Only, card data discriminating means for discriminating that the program stored in the program memory means can be edited, program editing means for editing the program stored in the program memory means, and the program memory means Numerical control target according to the stored program And program executing means for controlling the location, in which comprises an operation unit for operating the program executing means and a program editing means, and display means for displaying the data for controlling the numerical control target device.

[0005]

In the NC operation panel of the numerical controller according to the present invention, when a memory card as a storage medium in which various data are stored is attached to the card reader / writer means, the data in the memory card is read and the memory is read. If the predetermined data is stored in the permission information address in the data of the card, the program editing means can edit the program of the numerical control apparatus. When a memory card in which predetermined data is not stored in the permission information address is attached to the card reader / writer means, editing of the program of the numerical control device is prohibited, and the numerical control device is a numerical control target NC. Only numerical control machining of a machine tool or the like can be executed according to a program or the like stored in the memory card.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the numerical controller according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a combination of an NC operation panel 1 and an NC unit 20 of a numerical control device of this embodiment, and a servomotor as a numerical control target device 50, FIG.
FIG. 3 is a front view showing the appearance of the NC operation panel 1 in the numerical controller of this embodiment, and FIG. 3 is a block diagram of the numerical controller of FIG.

[0007] NC operation panel 1 formed compact and portable
Are electrically connected to the NC unit 20 which is the main body of the numerical control device via the transmission cable 15. The numerical control device of the present embodiment is configured so that various data input from the NC operation panel 1 are transmitted to the NC unit 20 to numerically control a plurality of servomotors such as NC machine tools which are numerical control targets. ing.

In FIG. 2, on the front surface of the NC operation panel 1,
A push button group, which will be described later, for numerically controlling a servo motor of an NC machine tool, a display panel 4 for displaying various data, and an operating part of an NC machine tool, etc.
Ready lamp 16 and alarm lamp 1 indicating abnormal status
7 and multiple indicator lamps 19 that indicate the current status of various functions 19
Etc. are provided. In addition, an emergency stop button 3 is provided on the front side of the front face, and is provided to perform an emergency stop of the servomotor which is a numerical control target.
As shown in FIG. 2, a power switch 6 is provided on the left side surface of the NC operation panel 1. By switching the power switch 6, the power supplied to the NC operation panel 1 is switched on and off. ing. A memory card reader / writer 17 is provided on the right side surface of the NC operation panel 1, and the memory card 2 serving as a storage medium is mounted on the memory card reader / writer 17. The memory card 2 has a main purpose of backing up the storage capacity of the numerical control device, and is an N controlled object.
C Programs and the like for operating machine tools and the like are stored. A rotary switch 5a of the manual pulse generator 5 is provided on the right side surface of the NC operation panel 1 in a protruding manner.
When the servo motor for driving the NC machine tool or the like is manually operated, the rotary switch 5a is rotated to drive the servo motor at a speed according to the angle of the rotation.

The push button group arranged on the NC operation panel 1 in the numerical controller of the present embodiment constructed as described above will be explained. In FIG. 2, the push button groups arranged in front of the NC operation panel 1 are the function key group 7, the cursor key group 8, the reset key 9, and the display mode selection key group 1.
0, an operation mode selection key group 11, a function key group 12, a machine operation key group 13, a machine key 14, and the like are configured by a plurality of push button groups. The push buttons of the function key group 7 are used when designating respective functions in the mode selected by the push buttons of the display mode selection key group 10 or the operation mode selection key group 11. The cursor key group 8 moves the mode displayed on the display panel 4. When the reset signal is input by pressing the reset key 9, the program under automatic operation is stopped, and the axis operating by the servo motor is decelerated and stopped. Also, alarm lamp 17
When the reset signal is input in the alarm state in which is lit, the alarm state is released if the cause of the alarm state is eliminated.

The display mode selection keys 10 are provided on the display panel 4
The content displayed on the pushbutton is selected. By pressing the desired pushbutton, the display lamp 19 at the upper left of the pushbutton is pressed.
Is illuminated to indicate that the mode is selected. The operation mode selection key group 11 is for selecting an operation mode of the servomotor of the numerical control target device 50, a program edit mode, and the like. For example, by pressing the operation key 111, memory operation, memory card operation or MDI (manual data input) operation can be selected. Memory unit is NC unit 20
Is a mode in which a servomotor such as an NC machine tool, which is a numerical control target, is operated according to a program stored in advance, and memory card operation is a mode in which the servomotor is operated according to a program stored in the memory card 2. is there. The MDI operation is a mode in which program data is manually input to set a program and the servo motor is operated each time machining is performed.

The edit key 112 in the operation mode selection key group 11 is a push button used when editing the programs for the memory operation and the memory card operation described above.
The memory card key 113 in the display mode selection key group 10 is used to select whether to edit the memory operation program or the memory card operation program. When the memory card key 113 is pressed, the display panel is displayed. The mode displayed on the screen of No. 4 is selected.

The start, hold, single block, etc., and the function key group 12 printed on the surface of the function keys 12 are for each function such as start, pause, or automatic operation of one block in the program. Is used when selecting. Each push button of the machine operation key group 13 has three functions.
When only the push button of 13 is pressed, it functions as displaying the number or alphabet printed on the lower right of the pushed push button. It has the function of displaying the alphabet printed on the circled part on the upper right, and also has the function of executing the manual operation mode printed on the left side of the push button when pressed simultaneously with the mechanical key 14. is doing.

Next, the configuration of the numerical controller according to this embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing the main components of this numerical controller.
As shown in FIG. 3, this numerical controller is an NC unit.
CPU 21, ROM 22, RAM 23, program memory 24, operation panel interface 25 and I / O interface 26 provided in 20, and transmission section 27, operation section 28, display section 29 and card provided in the NC operation panel 1 Reader / writer unit 30
It is equipped with. Each component of the NC unit 20 is connected by a bus so that various data can be transmitted. When the memory card 2 is attached to the memory card reader / writer 17 of the card reader / writer unit 30, the data stored in the memory card 2 is stored in the NC operation panel 1
Program memory of NC unit 20 via transmission unit 27 of
It is configured to be stored in 24. Therefore, the program memory 24 of the NC unit 20 stores the previously stored program and the program of the mounted memory card 2.

The transmission section 27 of the NC operation panel 1 is for transmitting various data by the above-mentioned various push button groups in the operation section 25 to the CPU 21 of the NC unit 20, and the display panel 4 which is the display section 26 is various data. Is being displayed.
The I / O interface 26 of the NC unit 20 transmits various data to and from the NC machine tool, which is the numerically controlled device 50.

The block diagram shown in FIG. 4 shows the main means for processing and managing various data in the numerical controller of this embodiment together with the data flow. The program data stored in the memory card 2 is transferred to the NC via the card reader / writer unit 30 and the transmission unit 27.
It is transmitted to and stored in the program memory means 31 of the unit 20. The program data of the memory card 2 stored in the program memory means 31 is provided with a permission information address, and the identification data stored in this permission information address is the identification data predetermined by the card data discrimination means 32. Is determined. In the card data discriminating means 32, when the identification data of the permission information address match, the memory card 2 is N
When mounted on the C operation panel 1, the program can be edited. That is, the memory card 2 is protected so that the program can be edited (program protection).
Is a special memory card 2 having a function of canceling
It is stored at a specific place in the factory and by a specific operator.

[0016]

[Table 1]

As shown in Table 1 above, the permission information address (indicated as address in Table 1) which is the identification data of the memory card 2 contains the group number of the numerical control device (a plurality of numerical control devices in the factory). Are stored, for example, an address of a number grouped according to the process), an address of a device number, and an address indicating whether the memory card can edit a program. Therefore, the special memory card 2 having the function of canceling the protection is the memory card reader / writer 17 of the NC operation panel 1.
You can edit the program only when it is attached to
It can be differentiated from the normally used memory card 2, and program editing by the normally used memory card 2 is surely prohibited.

Further, as shown in Table 1, in this permission information address in this embodiment, the program can be edited, and only the parameters in the program are changed, the offset is changed, and the cycle start is executed. An address is provided to enable The change of the parameter means that the NC machine tool or the like of the numerically controlled device 50 has a different operation capacity, for example, a parameter such as stroke, and therefore the parameter is changed according to each machine. Is different in shape, mounting position and wear state depending on each tool,
Adjusting the setting position according to each tool. The above cycle start is to start the automatic operation of the program, but in some cases, if you want to prohibit the automatic operation and make it only manual operation, by not storing the number corresponding to this address, the memory card It can be configured so that the automatic operation is surely prohibited when the is installed.

As described above, the numerical controller of this embodiment is provided with various addresses as described above, and when the memory card 2 having a predetermined number is attached to these addresses, the memory card The function corresponding to the address is ready for execution. As described above, by providing the permission information address with a plurality of addresses having functions that subdivide various programs and the like for changing actions, it is possible to perform fine management and processing of the programs.

Although the servo motor has been described as the numerical control target in the above embodiments, the present invention is not limited to the servo motor, and any device may be used as long as it is a numerically controlled driving source. It goes without saying that it is also applicable.

FIG. 5 shows a flow chart of program editing in the numerical controller according to the above-mentioned embodiment of the present invention. The program editing of this embodiment will be described below with reference to this flow chart.

In step 101, it is judged whether or not the memory card 2 is loaded in the memory card reader / writer 17 of the NC operation panel 1. If the memory card 2 is loaded, the program data of the memory card 2 is loaded in step 102. Are stored in the program memory 24 of the NC unit 20. At step 103, it is judged whether the permission information address in the program data of the memory card 2 has a predetermined number. If a predetermined number is not stored in this permission information address, the program cannot be edited by the memory card 2, and this flow ends. If the memory card 2 having a predetermined number in the permission information address is installed, step
In 104, the edit key 112 of the operation mode selection key group 11
Waiting for input by. If the edit key 112 is input, processing such as editing for changing the program is executed (step 105). Note that the program edited here is not limited to the program in the memory card 2
The programs stored in the C unit 20 can also be edited. In the editing routine for changing the program, when the reset key 9 is pressed, the program editing flow ends.

In the numerical controller of the present embodiment, the NC operation panel 1 is shown connected to the NC unit 20 via the transmission cable 15. However, the NC operation panel 1 and the NC unit 20 are the devices. Even when incorporated in the main body and integrated, the same effect as that of the above-described embodiment can be obtained.

[0024]

As described above, according to the numerical controller of the present invention, the permission information address, which is identification data, is provided in the data of the memory card, and the memory card mounted on the NC operation panel has a preset number. The following effects can be obtained because the program and the like can be edited only when is stored in the permission information address.

Since a protect mechanism such as a protect key switch and a protect key for protecting the program, which is provided in the conventional numerical control apparatus, is unnecessary, N
The C operation panel can be formed in a small size and can have a shape suitable for carrying; the memory card in the present invention used in place of the protect key in the conventional numerical control device can be easily duplicated. Therefore, it becomes a numerical control device that surely prohibits unauthorized use by a third party; when a program is edited, the protect key operation, which was necessary in the conventional numerical control device, is not required, and it can be executed only by the push button operation. Therefore, it becomes a numerical control device with improved operability; since each memory card is provided with a permission information address, various program edits can be performed only when a predetermined memory card is mounted, so that the operator's Program change due to erroneous operation is prohibited, and program management can be performed reliably and finely It is possible to obtain a value controller.

[Brief description of drawings]

FIG. 1 is a diagram showing a combination of a numerical control device and a servomotor according to an embodiment of the present invention.

FIG. 2 is an NC diagram of a numerical controller according to an embodiment of the present invention.
Front view showing the operation panel

FIG. 3 is a block diagram showing main constituent elements of an embodiment of a numerical controller according to the present invention.

FIG. 4 is a block diagram showing the configuration of the numerical controller shown in FIG. 1 of the present invention.

5 is a flow chart of program editing in the numerical controller shown in FIG. 1 of the present invention.

[Explanation of symbols]

1 NC operation panel 2 memory card 20 NC unit 27 Transmission unit 28 Control 29 Display 30 Card reader / writer 31 Program memory means 32 Card data identification means 33 Program Editing Means 34 Program execution means

Claims (3)

[Claims] 1. A memory card as a removable storage medium storing data, a card reader / writer unit for reading data from or writing data to the memory card, and data read by the card reader / writer unit. Program memory means transmitted and stored, edit for changing the program stored in the program memory means only when the memory card data stored in the program memory means includes predetermined identification data Card data discriminating means for judging that it is possible, program editing means for editing the program stored in the program memory means, program executing means for controlling the numerical control target device according to the program stored in the program memory means, Execution of the program A numerical control device comprising: an operating unit that operates the device and the program editing unit; and a display unit that displays data for controlling the numerical control target device. 2. A permission information address is provided in the data stored in the memory card, and the memory card having a predetermined number in the permission information address designating a specific function of program editing is a card reader / writer. The numerical controller according to claim 1, wherein the numerical controller can execute a designated function when mounted on the means. 3. The card reader / writer means, display means, transmission means, and operation means are configured as a portable NC operation panel, and the NC operation panel is electrically connected to an NC unit via a transmission cable. The numerical controller according to claim 2.