JP2008200797A - Machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problems: a machine tool which is inhibited from illegal export sometimes cannot start up in cases other than transportation; and the machine tool cannot be controlled if it is in an area where radio communications cannot be carried out. <P>SOLUTION: There is provided a new machine tool to overcome the problems. A machine main body 1 of the machine tool is provided with a mechanically activating switch 4. When the machine main body 1 is lifted up and the switch 4 is conducted, an on-signal generating device 5 outputs an on-signal to a discrimination value output device 6 to hold the output. The discrimination value output device 6 holds a discrimination code for discriminating whether the machine main body has been moved or not, and when a random number generator 7 inputs an on-signal at the time of input of a power source, the discrimination value output device irregularly demands the discrimination code, and replaces the held discrimination code by a new discrimination code to hold the same, followed by outputting the discrimination code held therein to a control device 2. The control device 2 encrypts the discrimination code, and compares the encrypted code with a code set beforehand. If the former does not coincide with the latter, the control device does not activate the main body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a machine tool having a function of preventing unauthorized transfer to an export restricted area.

  Machine tools are listed as products that may be diverted to military technology, and export is prohibited by law to certain foreign organizations. Manufacturers are promoting internal controls and strict operation of export regulations to prevent resale of machine tools subject to export restrictions to certain foreign organizations. However, since the current situation is that prevention of illegal exports is not completely guaranteed only by establishing a management system, it is considered to physically prevent illegal exports.

  In the vibration detection device and the device activation control method disclosed in Patent Document 1, the device is provided with vibration detection means so that the device cannot be activated when vibration is detected. And it is comprised so that it can start again by canceling | releases a starting prohibition means on the conditions set beforehand.

  In addition, the machine tool operating status management system disclosed in Patent Document 2 is illegally resold to countries where export is restricted by providing position detection means on the machine tool and sending the position information to the management device wirelessly or the like. So that you can figure out if it ’s not. For example, GPS (Global Positioning System) is used to transmit the position information to the management apparatus. Thus, the system which sent position information to the management apparatus and grasped | ascertained the installation place of a machine tool is disclosed by patent document 3 and patent document 4, for example.

JP 2003-35595 A JP-A-2005-107646 Japanese Patent Laid-Open No. 2005-190068 JP-A-2005-44162

  In a system provided with vibration detection means as in Patent Document 1, the vibration detection means is operated by vibrations such as an earthquake other than when equipment is moved, and the machine tool cannot be started often even when the equipment is moved. The problem arises that a troublesome procedure must be taken to allow the machine tool to be restarted each time it occurs.

  In addition, in a system in which location information is transmitted wirelessly as in Patent Document 2 and the installation location is grasped, if the wireless communication cannot be transmitted / received and is moved to a location where radio waves do not reach, It has the problem that it becomes impossible to do. In addition, a large-scale system for monitoring the positions of a large number of machine tools is required.

  In view of the above problems, an object of the present invention is to provide a machine tool that more easily and reliably restricts the transfer of machine tools in order to prevent unauthorized export.

  In order to solve the above problems, the machine tool of the present invention has a switch (4) that is turned on when the machine main machine (1) is lifted, and an on signal that outputs an on signal when the switch (4) is turned on. An identification code for identifying whether or not the signal generator (5) and the machine main unit (1) are moved is held, and a new identification code is obtained and stored when an ON signal is input from the ON signal generator (5). The identification value output device (6) that outputs the identification code held by replacing the identification code that has been replaced with a new identification code, and the identification code that is output from the identification value output device (6) are preset. And a control device (2) that is not activated when the identification code does not match the setting code by comparing the setting code.

  The switch (4) may be a switch that conducts when the terminal of the external cable connecting the machine (1) and the control device (2) is removed, instead of the switch that conducts when the machine is lifted. it can. Further, the ON signal generator (5) is configured to output the ON signal until a reset signal is input from the identification value output device (6) or the control device (2).

  Preferably, the identification value output device (6) obtains a new identification code by converting the identification code held before the change according to a predetermined rule, and the control device (2) outputs from the identification value output device (6). It is configured to activate when the identification code to be changed matches the newly inputted release code obtained by converting the identification code before the change according to a predetermined rule. Further, the control device (2) is configured to store the release code as a new setting code.

  Preferably, the control device (2) encrypts the identification code output from the identification value output device (6) according to a predetermined rule, compares the encryption code with the setting code, and the encryption code does not match the setting code. When configured to not start. Further, the control device (2) displays the identification code output from the identification value output device (6) on the display device, and compares the encryption code with a newly input release code obtained in accordance with a predetermined law. When the encryption code and the release code match, it is configured to start. More preferably, the control device (2) is configured to store the release code as a new setting code.

  In the machine tool of the present invention, when the machine main unit is lifted or when the terminal of the external cable connecting the machine main unit and the control device is removed, the switch is turned on, and when the switch is turned on, the on signal generator is turned on. Since the identification value output device outputs a signal and the identification code for identifying whether or not the machine has been moved is changed and output, the identification code and the setting code do not match when the control device is turned on. Will not start. Most of the time when the machine is lifted or the terminal of the external cable connecting the machine and the control device is removed is when the machine is moved, and only when the machine is moved more securely. Activation of the control device can be prohibited. And since it is rare to move a heavy machine that is not easy to install, there is no possibility that the machine tool cannot be operated frequently at times other than moving the machine. In addition, the relocation of the machine can be monitored even when radio waves do not reach. In addition, a large system is not required. As a result, it is possible to prevent unauthorized export more easily and reliably.

  The control device is configured to be activated when the identification code output from the identification value output device and the identification value output device are compared with a newly input release code obtained in accordance with a predetermined rule for obtaining the identification code and match. By doing so, the state where the control device cannot be activated can be easily canceled when the machine is properly relocated outside the export restricted area. Further, by configuring the control device so as to store the release code as a new setting code, it is possible to easily return to a state where the operation of the machine tool can be resumed without taking any special measures.

  When the control device encrypts the identification code output from the identification value output device in accordance with a predetermined rule so that the control device cannot be activated when the encrypted code does not match the setting code, the identification code is read. As a result, there is no possibility that the prohibition of the activation of the control device is unjustly cancelled. In addition, it is easier to manage the machine tool because it is not necessary to record the original identification code before the change. In addition, when the control device can be activated when the encryption code matches the newly entered release code obtained in accordance with a prescribed rule, it is released even if the identification code is irregularly changed and output. Since the code can be obtained, it is possible to easily cancel the state where the control device cannot be activated when the machine is properly moved. Further, by configuring the control device so as to store the release code as a new setting code, it is possible to easily return to a state where the operation of the machine tool can be resumed without taking any special measures.

  FIG. 1 shows a schematic configuration of the present invention, and shows a state when the machine body is lifted. The machine tool includes a machine main machine 1 and a control device 2. The control device 2 may be provided integrally with the machine main machine 1 or may be provided separately from the machine main machine 1 by being housed in a casing installed separately from the machine main machine 1. When the control device 2 is provided apart from the machine main unit 1, the machine main unit 1 and the control device 2 are connected by an external cable (snake tube).

  The control device 2 controls the operation of the machine main unit 1. For example, the control device 2 controls the movement of each axis feeding device of the machine main machine 1. In general, the control device 2 includes a computer numerical control device (CNC) in which an operator operates the control device 2 to operate the machine main unit 1 and manages work, and a motor of a shaft feeding device. And a control device of each device provided in the machine main machine 1 such as a motor control device for controlling the machining fluid and a machining fluid control device for controlling the machining fluid supply device.

  The numerical control device includes a CPU (Central Processing Unit), a memory such as a DDR-SDRAM (Double Data Rate-Synchronous Dynamic Random Access Memory), a storage device such as a hard disk drive or a flash memory, a display, a keyboard, a graphic adapter, It includes a LAN adapter (Local Area Network) and the like. When the numerical control device is activated, the control device 2 can control the machine main unit 1.

  The program for operating the numerical control device is broadly divided into a basic input / output system (BIOS), an operating system (OS), and application software dedicated to machine tool control. Then, the BIOS is executed to recognize and confirm the operation of each hardware. After that, the OS startup program is executed, and then application software dedicated to machine tool control is started. If the application software dedicated to machine tool control is not normally executed, the machine main unit 1 cannot be controlled. Therefore, in order for the control device 2 to start up normally, it is necessary to start up to application software dedicated to machine tool control.

  A switch 4 that mechanically opens and closes is provided at a location where the machine 3 is grounded on the ground of the bed 3. The switch 4 is non-conductive when the machine main unit 1 is installed, and is conductive when the machine main unit 1 is lifted. When the machine main unit 1 is installed on the ground, the switch 4 is in an off state in which the pin is pushed against the ground and positioned on the upper side against the spring force and the contact is open and is not conducting. On the other hand, when the machine main unit 1 is lifted as shown in FIG. 1, the switch 4 is in an ON state in which the pin is positioned on the lower side by the spring force and the contact is closed to be conductive.

  When the control device 2 is housed in a case installed separately from the machine main unit 1 and the machine main unit 1 and the control device 2 are connected by an external cable, the switch 4 that mechanically opens and closes is not shown. It can be provided at a terminal (connector) to which an external cable is connected. In this case, the switch 4 is in a non-conductive off state when the connector is connected, and is in an on state in which the contact is closed and conductive when the connector is removed.

  An on signal generator that outputs an on signal when the switch 4 is turned on, and an identification code (identification value) that identifies whether or not the machine main unit 1 has been moved are retained in the machine main unit 1. An identification value output device for outputting a retained identification code by replacing a retained identification code with a new identification code in accordance with a predetermined law or irregularly when a ON signal is input from Provided. In the embodiment, the on-signal generator is a self-holding circuit 5. The identification value output device 6 includes a random number generator 7 installed on a substrate.

  The machine main unit 1 has a built-in battery such as a battery that is charged when power is supplied from the power source to the machine main unit 1, and the machine main unit 1 is turned off. Power is supplied to the self-holding circuit 5 and the identification value output device 6. The machine main machine 1 is lifted when the power is cut off. Accordingly, the self-holding circuit 5 operates even when the machine main unit 1 is lifted by cutting off the power supply in order to move the machine main unit 1. Further, the identification value output device 6 can hold a predetermined identification code.

  The self-holding circuit 5 outputs an ON signal to the identification value output device 6 when the switch 4 becomes conductive. Further, the self-holding circuit 5 holds the ON state in which the ON signal is output until the identification value output device 6 or the control device 2 resets the self-holding circuit 5. When the machine main unit 1 is lifted and the switch 4 is turned on, a relay (not shown) in the self-holding circuit 5 is closed, and the self-holding circuit 5 is turned on so that an on signal is output. When the self-holding circuit 5 is in the ON state, the ON signal is continuously output to the random number generator 7 of the identification value output device 6. The relay is opened by a reset signal output from the identification value output device 6, and the self-holding circuit 5 holds an off state in which an on signal is not output.

  When the ON signal generator is configured to hold the ON state like the self-holding circuit 5, the machine main unit 1 is lifted while the power source of the machine main unit 1 is cut off, and then left stationary. When the switch 4 becomes non-conductive, or the machine main unit 1 is moved and the cable is removed many times, the ON state is maintained. Even if the random number generator 7 is not operated, the random number generator 7 can be operated by inputting an ON signal when the power is turned on. Therefore, the power consumption can be reduced by not operating the random number generator 7 while the power of the machine main unit 1 is cut off. When the holding device 8 that holds the identification code of the identification value output device 6 or a storage device (not shown) is a device that can store data without being supplied with power, the power is cut off. Meanwhile, the identification value output device 6 may not be supplied with power.

  When the identification value output device 6 is configured to obtain the new identification code by converting the original identification code before the change according to a predetermined rule not disclosed by the manufacturer, a release code for canceling the unbootable state is provided. To find out, the original identification code needs to be recorded. If the identification value output device 6 changes and outputs the identification code many times while the control device 2 is not normally activated, the original identification code is not known, so that the self-holding is performed after the control device 2 is activated normally. The circuit 5 is configured to output a reset signal. With this configuration, when the identification value output device 6 outputs a new identification code in accordance with a predetermined rule, the cancellation code cannot be obtained by changing the number of times to change to a new identification code to one. can do. However, when the identification value output device 6 includes the random number generator 7 as in the embodiment, since the identification code generated by the random number generator 7 is obtained irregularly, before the power is turned on. No matter how many times a new identification code is generated, there is no problem.

  The identification value output device 6 holds a predetermined identification code in the holding device 8 or the storage device. The identification code held when the power is turned on is set in the output circuit 9 and output to the control device 2. To do. The identification code is a code for identifying whether or not the machine main unit 1 has been moved, and is serial data including numbers, alphabets, and symbols. When the machine main unit 1 is moved, the identification value output device 6 changes the identification code held by inputting the ON signal from the self-holding circuit 5 by switching the switch 4 to a new identification code. Output to the control device 2.

  When an ON signal is input from the self-holding circuit 5, the identification value output device 6 obtains a new code by converting the original identification code held before the change in accordance with a predetermined rule not disclosed by the manufacturer, or A new identification code is obtained irregularly and replaced with the old original identification code that is retained, and the new identification code is retained. In the identification value output device 6 of the embodiment, when the power is turned on, the random number generator 7 receives an ON signal from the self-holding circuit 5 and irregularly obtains a new identification code (random number value) to hold the holding device 8. The identification code held in is replaced with a new identification code and held, and the held identification code is set in the output circuit 9 and the new identification code is output to the control device 2.

  The control device 2 inputs an identification code output from the identification value output device 6 after the power is turned on, and compares it with a setting code (setting value) preset in the control device 2. The control device 2 starts normally when the identification code matches the setting code. On the other hand, the control device 2 does not start when the identification code and the setting code do not match. When the control device 2 does not start up because the identification code does not match the setting code, the operator provides a release code (release) provided by the manufacturer according to the input screen displayed on the display device (display) of the control device 2 (not shown). The control device 2 can be activated by inputting a value. The cancellation code can be obtained according to a predetermined law used when a new identification code is obtained by the identification value output device 6.

  The control device 2 according to the embodiment displays the identification code output from the identification value output device 6 after the power is turned on on the display device, and encrypts the identification code in accordance with a predetermined rule, thereby encrypting the encrypted code Compare (encryption value, registration value) and setting code. When the encryption code and the set code do not match, the activation is not performed, and when the encryption code matches the newly entered release code, the activation is performed when the encryption code matches the release code.

  The encryption code is obtained by encrypting the identification code output from the identification value output device 6 according to a predetermined rule not disclosed by the manufacturer. By configuring in this way, even if the original identification code before the change is unknown, the release code can be obtained according to a predetermined law for encryption from the displayed identification code. There is no need to record codes, making it easier to manage machine tools. Further, even if the identification value output device 6 generates an identification code irregularly like the random number generator 7, the release code can be obtained by a predetermined law when encrypting, and the control device 2 is activated. Can be lifted. Further, there is no problem even if a method for obtaining a new identification code is known, and even when the encryption method is known, the encryption in the control device 2 can be performed without replacing the identification value output device 6. There is an advantage that the activation of the control device 2 can be prohibited only by changing a predetermined law.

  The manufacturer can obtain the release code by encrypting serial data, which is an identification code irregularly output from the random number generator 7 displayed on the display device, in accordance with a predetermined undisclosed law. Because the law is secret to the user, the operator cannot cancel the prohibition of activation of the control device 2 only by looking at the displayed identification code, and receives the release code notification from the manufacturer. The prohibition of the activation of the control device 2 can be canceled by inputting a code.

  FIG. 2 shows operations of the ON signal generator and the identification value output device of the embodiment of the machine tool of the present invention. Moreover, FIG. 3 shows the operation | movement at the time of starting of the control apparatus of embodiment. Hereinafter, the operation at the time of turning on the power in the machine tool of the present invention will be described.

  When the machine body 1 is installed on the ground and the switch 4 is not conducting, the self-holding circuit 5 is in an off state in which an on signal is not output. The switch 4 is turned on when the machine body 1 is lifted and moved. When the switch 4 is turned on, the self-holding circuit 5 closes a relay (not shown) to output an on signal and keeps the on state until reset by the identification value output device 6. Therefore, even if the machine main unit 1 is deferred and the switch 4 becomes non-conductive again, the self-holding circuit 5 continues to output an ON signal unless reset.

  When the machine main machine 1 is deferred and the machine main machine 1 and the control device 2 are powered on, the identification value output device 6 sets the identification code in the output circuit 9 and outputs it to the control device 2. When the self-holding circuit 5 is in an off state where no on signal is output (S11), since the on signal is not input to the random number generator 7, the random number generator 7 does not operate, and the identification value output device 6 An identification code, which is serial data consisting of a number of digits or a combination of numbers and letters or symbols held in the holding device 8, is set in the output circuit 9 and output to the control device 2 (S15).

  When the machine body 1 is lifted and the switch 4 is turned on once, the self-holding circuit 5 is in an ON state outputting an ON signal, and the ON signal is input to the random number generator 7 of the identification value output device 6. (S11), the random number generator 7 operates to obtain a new identification code irregularly (S12). Next, the identification code held so far in the holding device 8 is overwritten with the new identification code, the old identification code is replaced with the new identification code, and held in the holding device 8 (S13). At the same time, a reset signal is output to the self-holding circuit 5 and the relay is turned off to place the self-holding circuit 5 in an off state where no on signal is output (S14). Then, the identification value output device 6 sets the new identification code held in the holding device 8 in the output circuit 9 and outputs it to the control device 2 (S15).

  When the power of the machine main unit 1 and the control device 2 is turned on, the control device 2 starts the BIOS according to the start program, and then starts the OS. After the OS is activated, an identification code is input from the identification value output device 6 of the machine 1 (S21). The input identification code is registered (S22). The resist is to encrypt serial data as an identification code in accordance with a predetermined rule that is not disclosed by the manufacturer.

  Next, the encryption code obtained by encrypting the identification code is compared with the setting code preset and stored in the control device 2 (S23). When the encryption code matches the setting code, application software dedicated to machine tool control is activated to activate the control device 2 (S24).

  If the encryption code and the setting code do not match, the identification code input from the identification value output device 6 and the machine body 1 has been moved, so the manufacturer is notified of the movement location and the identification code displayed on the display device. A message indicating that it is necessary to obtain the release code and input the release code and a screen for inputting the release code are displayed on the display device of the control device 2. The release code is the same data as the encryption code obtained by encrypting the identification code input from the identification value output device 6 in accordance with a predetermined secret rule that is kept secret by the manufacturer. Therefore, the manufacturer can obtain the release code by converting the identification code displayed on the display device in accordance with the above-mentioned prescribed rule not disclosed.

  When the operator inputs the release code notified by the manufacturer (S25), the setting code is replaced with the release code and stored as a new setting code in a storage device (not shown) (S26). Then, the encryption code and the cancellation code are compared, in other words, the encryption code matches the setting code by comparing the encryption code and the new setting code replaced with the cancellation code (S23). When the encryption code matches the setting code, the application software dedicated to machine tool control is activated to activate the control device 2 (S24).

  The machine tool of the embodiment described above is not limited to the embodiment, and various modifications and replacements are possible as described in some examples. For example, in the embodiment, the configuration is such that the identification code is encrypted after the OS is started and compared with the setting code. However, if all of the BIOS, OS, and application software dedicated to machine tool control are not started, the control device Since it does not start normally, it can be configured to input the identification code before starting the BIOS or before starting the OS.

  According to the machine tool of the present invention described above, when the machine main body is lifted, in other words, when the machine main body is to be moved, the switch is turned on and the on signal generator outputs the on signal. The identification code held by the identification value output device is rewritten and a new identification code is output, which does not match the preset code set in the control device and the control device does not start. In this case, since the control device does not start up, the machine cannot be operated, and unauthorized export can be surely prevented.

  In addition, the control device activation prohibition can be canceled by rewriting the setting code with a new setting code in accordance with a predetermined rule that is not disclosed by the manufacturer, so the control device activation prohibition cancellation process is also safe and simple. is there.

  The present invention can be used for machines whose export is restricted. In particular, it is suitable for high-precision machine tools that can be diverted to military technology, and prevents illegally exporting machine tools to export restricted areas.

It is a block diagram which shows the outline | summary of the machine tool of this invention. It is a flowchart which shows operation | movement of the identification value output device of embodiment in the machine tool of this invention. It is a flowchart which shows the operation | movement at the time of starting of the control apparatus of embodiment in the machine tool of this invention.

Explanation of symbols

1 Machine Main Machine 2 Control Device 3 Bed 4 Switch 5 Self-holding Circuit (ON Signal Generator)
6 Identification Value Output Device 7 Random Number Generator 8 Holding Device 9 Output Circuit

Claims (8)

A switch that is turned on when the machine is lifted, an on signal generator that outputs an on signal when the switch is turned on, and an identification code that identifies whether the machine is moved or not An identification value output device for obtaining a new identification code when an on signal is input from an on signal generation device, replacing the held identification code with the new identification code, and outputting the held identification code; A control device that compares the identification code output from the identification value output device with a preset setting code so as not to start when the identification code and the setting code do not match. machine. The machine tool according to claim 1, wherein the switch is a switch that conducts when a terminal of an external cable that connects the machine main unit and the control device is removed. 2. The machine tool according to claim 1, wherein the on signal generator is configured to output an on signal until a reset signal is input from the identification value output device or the control device. The identification value output device obtains a new identification code by converting the held identification code before the change according to a predetermined rule, and the control device outputs the identification code output from the identification value output device and the pre-change. 2. The machine tool according to claim 1, wherein the machine tool is configured to be activated when a newly entered release code obtained by converting the identification code according to the predetermined rule is compared and matched. 5. The machine tool according to claim 4, wherein the control device is configured to store the release code as a new setting code. The control device encrypts the identification code output from the identification value output device according to a predetermined rule, compares the encryption code with the setting code, and does not start when the encryption code and the setting code do not match The machine tool according to claim 1, wherein the machine tool is configured as follows. The control device displays an identification code output from the identification value output device on a display device, and compares the encryption code with a newly input release code obtained according to the predetermined rule, and the encryption code and the The machine tool according to claim 6, wherein the machine tool is configured to be activated when the release codes match. 8. The machine tool according to claim 7, wherein the control device is configured to store the release code as a new setting code.

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