JPS6243704A - Numerical controller - Google Patents

Abstract

PURPOSE:To make it impossible to decode actions caused by other devices and contents by enciphering a control program and processing data into an internal code inherent to the numerical control by a cipher converting means and storing decoded stuff. CONSTITUTION:In order to load the control program or register the processing data, first an activating signal for loading or registering is given to a control means from an operation display means 2, the control program prepared by an input medium 8 such as paper tapes, etc., or the processing data is inputted through an input means 1 and supplied to the cipher converting means 5 based on the command of the control means 3. The cipher converting means 5 enciphered the given information into the internal code inherent to its numerical controller, and stores it in a memory means 6. The control program and processing data stored in the memory means 6 are returned to a normal internal code by the cipher converting means 6, and supplied to the control means 3 and an arithmetic means 4 so as to process. Thus even if the memory means is transferred and appropriated for other numerical controllers, a machine to be controlled does not execute the designated work.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a numerical control device that processes numerically controlled machining data according to a control program and controls a machine to be controlled based on the processing results.

[Conventional technology]

Figure 2 is a block connection diagram of a conventional numerical control device.
In the figure, 1 is an input means for inputting processed data recorded on an input medium 8 such as a paper tape, and 2 is an operation for giving a start signal for rounding the registration of processed data and a start signal for controlling the controlled machine to the control means 3. Display means; numeral 4 denotes an arithmetic means for arithmetic processing of the processed data stored in the storage means 6 according to a control program; numeral 1 denotes an output means for outputting the results of the arithmetic processing to the controlled machine 9;

The following operation will be explained. First, to load a control program or register processing data, a start signal for loading or registration is given from the operation display means 2 to the control means 3. Data is inputted from the input means 1 and stored in the storage means 6 in a standardized internal code such as KA8CII code or JIS code based on commands from the control means 3.

When controlling the controlled machine 9, first the operation display means 2
gives a start signal for machine control to the control means 3, thereby inputting the processed data prepared on the input medium 8 such as a paper tape from the input means 1 or inputting the processed data already stored in the storage means 6. are controlled by the control means 3. based on the control program also stored in the storage means 6. The calculation means 4 processes it. The control means 3 outputs the processing results of the arithmetic means to the output means T, and the output means 7 supplies machining information to the machine 9 to be controlled, which in turn controls the machine 9 to be controlled.

[Problems that the invention attempts to resolve]

Since the conventional numerical control device is configured as described above, the control program and the processing data stored in the storage means 6 are stored in standardized internal codes such as ASCII codes and JIS codes. However, there was a problem in that control programs, processing data, or other important data that required confidentiality, which had been developed at great expense, could be easily stolen by copying the contents of the storage means 6. .

This invention was made to solve the above-mentioned problems, and even if the stored control program or processing data is completely copied, it can be used without changing the operation or content of other devices. The objective is to obtain a numerical control device that can

[Failure to solve the problem]

The numerical control device according to the present invention encrypts a control program and processed data into an internal code unique to the numerical control using a cryptographic conversion means, and stores the encrypted control program and processed data in a storage means. It is composed of

[Effect]

The encryption conversion means in this invention encrypts the control program and processed data stored in the storage means with a secret code, and when executing the encrypted control program and processed data, this code is used. Even if the above-mentioned storage means is simply used for copying, the machine to be controlled by the above-mentioned processing program cannot be operated unless the above-mentioned encryption conversion means is used. do.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 5 denotes an encryption conversion means, which is connected between the control means 3 and the storage means 6, and which encodes the control program or processed data to be stored in the storage means 6 into an internal code specific to this numerical control. . Further, other constituent parts that are the same as those shown in FIG. 2 are given the same reference numerals, and redundant explanation thereof will be omitted.

Note that even when the control program or processed data stored in the storage means 6 as an encrypted internal code is supplied to the control means 3, it is decoded by the encryption conversion means 5 and converted into a regular internal code. .

Next, the operation of this embodiment will be explained.

In loading a control program or registering processed data, first, a start signal for loading or registration is given from the operation display means 2 to the control means 3;
In this way, a control program or processing data prepared on an input medium 8 such as a paper tape is inputted from the input means 1,
Based on the command from the control means 3, it is supplied to the cryptographic conversion means 5. The code conversion means 5 encrypts the given information into an internal code unique to the numerical control device and stores it in the storage means 6.

When controlling the machine 9 to be controlled, a start signal for controlling the machine is given from the operation display means 2 to the control means 3, and the processing data prepared on the input medium 8 such as a paper tape is transmitted to the input means. 1 or already stored in the storage means 6 is processed by the control means 3.1 on the basis of the control program stored in the storage means 6. Processing is performed by the calculation means 4, and the processing result is outputted to the output means T. The output means T supplies the processing information to the machine 9 to be controlled, thereby making it possible to control the machine 9 to be controlled. In this case, the control program and processed data stored in the storage means 6 are converted back to regular internal codes by the cryptographic conversion means 5, and the control program and processed data stored in the storage means 6 are converted back to regular internal codes by the control means 3. It is supplied to the calculation means 4 and processed.

Further, in the above embodiment, the control program and the machining program are encrypted and stored in the hole internal code in the storage means 6, but the parameter information for selecting the functions of the numerical control device is encrypted. It may also be stored as an internal code.

Furthermore, the storage means 6 can be a main storage device such as a memory, or an auxiliary storage device such as a magnetic disk or magnetic tape, and the same effect can be achieved.

〔Effect of the invention〕

As described above, according to the present invention, the control program and processed data are encrypted by the cryptographic conversion means into an internal code specific to this numerical control, and this is stored in the storage means. Even if it is copied and diverted to another numerical control device, the machine to be controlled will not be able to perform the intended work, and this has the effect of providing excellent confidentiality and copyright protection.

[Brief explanation of the drawing]

FIG. 1 is a block connection diagram showing a numerical control device according to an embodiment of the present invention, and FIG. 2 is a block connection diagram showing a conventional numerical control device. 3 is a control means, 4 is a calculation means, 5 is a code conversion means, 6 is a storage means, and 9 is a machine to be controlled. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Claims] (1) A control program and machining data for numerical control are stored in a storage means based on commands from a control means, and the machining data stored in this storage means is stored in a control program also stored in the storage means. Therefore, in a numerical control device that performs arithmetic processing in a calculation means and controls a controlled machine based on the processing result, an encryption conversion means is provided for encrypting the control program and processed data into an internal code unique to this numerical control, A numerical control device characterized in that the encrypted control program and processing program are stored in the storage means. (2) The encrypted control program or processing program stored in the storage means can be decoded into a regular internal code by the encryption conversion means. Numerical control device.