JPH04348842A - Numerical control device - Google Patents

Abstract

PURPOSE:To perform automatic measurement and writing of the length and the diameter of a tool under execution of a program in relation to a tool the length and the diameter of which are unmeasured. CONSTITUTION:An information set part 1b is arranged to a data carrier 1a of a tool 1. When it is decided from information of the information set part 1b that a selected tool is an unmeasured tool, an unmeasured tool measuring command is outputted from a tool data reading control part 7. The length and the diameter of an unmeasured tool 1 are automatically measured by using a tool length/diameter measuring unit 2 and a tool length/tool diameter measurement control part 3. Further, measurement tool data is automatically written to the data carrier 1a of the unmeasured tool 1 and simultaneously information indicating completion of measurement is automatically written in the information set part 1b of the data carrier 1a. This constitution eliminates a work to check the tool 1 and write tool data by an operator.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is a numerically controlled machine tool that uses multiple tools with different lengths and diameters, and in particular, the tool length and diameter are read from a data carrier attached to the tool. This invention relates to a numerical control device for a numerically controlled machine tool that performs correction.

0002

2. Description of the Related Art In a numerically controlled machine tool that uses a plurality of tools having different lengths and diameters, tool length/tool diameter correction is performed in accordance with the length and diameter of the tool selected when a part program is executed. Here, the part program is a program for planning and realizing work for machining parts in a numerically controlled machine tool. For this tool length/tool radius correction, there is a numerically controlled machine tool that reads the length and diameter of the tool from a data carrier attached to the tool.

A conventional numerical control device for such a numerically controlled machine tool will be explained using the block diagram shown in FIG. As shown in the figure, this numerical control device controls the tool 1 used for machining.
A tool length/diameter measuring device 2 and a tool length/tool radius measurement control section 3 are provided as means for automatically measuring the length and diameter of the tool. The length and diameter of tool 1 measured using
A tool data read/write device 4 is provided as a means for writing/reading data to/from a data carrier 1a attached to the tool. Furthermore, when executing the stored part program, the part program is used as a means for correcting the tool length/tool diameter by reading the length and diameter of the selected tool 1 from the data carrier 1a using the tool data read/write device 4. It includes a storage section 5, a part program execution section 6, a tool data reading control section 7A, and a tool data storage device 8.

[0004] In the numerical control device having the above configuration, the operator OP, before operating the machining part program,
The tools 1 used in the part program stored in the part program storage unit 5 are checked, and if there is a tool whose length and diameter have not been measured, the unmeasured tool is stored in the tool length/tool diameter measurement control unit 3. Issue a measurement command. Having received the measurement command, the tool length/tool diameter measurement control section 3 controls the tool length/diameter measuring device 2.
The length and diameter of the unmeasured tool 1 are automatically measured. After the measurement, the operator OP writes the measured data into the data carrier 1a of the tool 1 using the tool data read/write device 4. The operator OP performs the above checking and writing operations on all tools 1 used in the part program, eliminates unmeasured tools, and then starts the part program. Then, the part program execution unit 6 reads the part programs from the part program storage unit 5 and executes them sequentially. After executing the tool exchange command on the part program, the part program execution section 6 instructs the tool data reading control section 7A to read the tool data, that is, the length and diameter of the tool 1. Having received the reading instruction, the tool data reading control section 7A uses the tool data read/write device 4 to read the tool data from the data carrier 1a of the tool 1 selected by the exchange instruction, and converts the tool data into the tool data. The tool data is stored in the storage device 8, and then a correction data set completion signal is sent to the part program execution unit 6, indicating that the tool data can be used. Upon receiving the correction data set completion signal, the part program execution unit 6 reads out the tool data of the selected tool 1 as correction data from the tool data storage device 8, and performs tool length/tool diameter correction. This tool length/tool diameter correction allows the numerically controlled machine tool to use multiple tools to perform machining as instructed.

[0005]

As described above, in the conventional numerical control device, the operator OP checks all the tools 1 used in the part program before operating the part program for machining. If there is a tool whose length and diameter have not yet been measured, they must be measured and the measured data must be written into the data carrier 1a. That is, in the conventional numerical control device, there was a problem that the above-mentioned checking and writing work placed a heavy burden on the operator OP, and there was also a problem that there was a risk of machining errors due to mistakes in writing tool data.

The present invention was made to solve these problems, and it is possible to automatically measure and write the length and diameter of an unmeasured tool during execution of a part program. The purpose is to provide a numerical control device.

[0007]

[Means for Solving the Problems] In order to achieve the above object, in the numerical control device according to the present invention, the data carrier of the tool is provided with an information setting section indicating whether or not the length and diameter of the tool have been measured. and a means for issuing an unmeasured tool measurement command to the measuring means when information indicating unmeasured is read from the information set section of the data carrier by writing/reading, and a means for causing the measuring means to perform measurement according to the unmeasured tool measuring command. means for automatically writing the length and diameter of the unmeasured tool and information indicating that the measurement has been completed into the data carrier of the unmeasured tool and the information set section of the data carrier, respectively, by means of a writing/reading means. Ta.

[0008]

[Operation] According to the above configuration, if the newly set tool selected according to the tool change command of the part program is determined to be an unmeasured tool from the information in the information setting section of the data carrier, A tool measurement command is issued and the length and diameter of the unmeasured tool are automatically measured. Further, the measurement tool data is automatically written into the data carrier of the unmeasured tool, and at the same time, information indicating that the measurement has been completed is automatically written into the information set section of the data carrier.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a numerical control device according to the present invention. In FIG. 1, the same reference numerals are given to the same components as in the conventional example shown in FIG. 3, and the explanation thereof will be omitted. As shown in the figure, in this numerical control device, a data carrier 1a of a tool 1 is provided with an information setting section 1b indicating whether the length and diameter of the tool 1 have been measured or not. Furthermore, when the tool data read/write device 4 reads information indicating unmeasured from the information setting section 1b of the data carrier 1a, an unmeasured tool measurement command is sent to the measuring means, in this case tool length/tool. A tool data reading control section 7 is provided for issuing data to the diameter measurement control section 3 . This tool data reading control section 7 is the same as the conventional tool data reading control section to which a function of issuing the unmeasured tool measurement command is added. Furthermore, the length and diameter of the unmeasured tool 1 measured by the tool length/diameter measuring device 2 in accordance with the unmeasured tool measurement command and information indicating that the measurement has been completed are stored in the data carrier 1a of the unmeasured tool 1, respectively. In order to automatically write data into the information set section 1b of the data carrier 1a by the tool data read/write device 4,
A tool data write control section 9 is provided. The other configurations are the same as the conventional example.

Next, the operation of the numerical control device having the above configuration is as follows.
This will be explained using the flowcharts of FIGS. 1 and 2. When the operator starts the part program, the part program execution unit 6 reads the part program from the part program storage unit 5 and executes it (step S1), and first determines whether the execution is a tool change command (step S2). . If it is not a tool exchange command, then it is determined whether the part program has ended (step S3), and if the program has ended, the operation is ended, and if the program has not ended, the process returns to step S1 to continue the part program.

If it is a tool change command in step S2, the part program execution section 6 executes the tool change command, and then sends a tool change completion signal to the tool data reading control section 7, and selects according to the tool change command. Instructs to read tool data regarding the length and diameter of the newly set tool 1. Then, the tool data reading control section 7 uses the tool data read/write device 4 to read tool data from the data carrier 1a of the tool 1 (step S4). When reading this tool data, the tool data reading control section 7 determines whether or not this tool 1 is a tool whose length and diameter have already been measured, based on the information set in the information setting section 1b of the data carrier 1a. Step S5)
.

If the tool has been measured, the tool data reading control section 7 stores the read tool data in the tool data storage device 8, as in the conventional case (step S6).
, outputs a correction data set completion signal to the part program execution unit 6. Upon receiving the correction data set completion signal, the part program execution unit 6 returns to step S1 to continue the part program, reads out the tool data of the selected tool 1 as correction data from the tool data storage device 8, and calculates the tool length. /Tool diameter correction will be performed. On the other hand, if the determination in step S5 is that the tool is an unmeasured tool, that is, if the tool data read/write device 4 reads information indicating that it is not measured from the information setting section 1b, the tool data reading control section 7 , issues an unmeasured tool measurement command to the tool length/tool diameter measurement control section 3. Then, the tool length/tool diameter measurement control section 3 that receives this unmeasured tool measurement command instructs the tool length/diameter measuring device 2 to perform measurement.
Measure the length and diameter of the unmeasured tool 1 (step S7)
, the measured tool data is sent to the tool data writing control section 9.
, and sent to the tool data storage device 8. Then, the tool data writing control section 9 writes the measured tool data and the information indicating that the measurement has been completed to the data carrier 1a of the unmeasured tool 1 and the information setting section 1b of the data carrier 1a, respectively. /Written by the write device 4. At the same time, the tool data storage device 8 stores the measurement tool data directly sent from the tool length/tool diameter measurement control section 3 as measurement tool correction data (step S8).

After the writing is completed, the tool data writing control section 9 transmits the writing completion signal to the tool length/tool diameter measurement control section 3.
The tool length/tool diameter measurement control section 3, which has received the write completion signal, sends a measurement correction data set completion signal to the part program execution section 6. After that, as in the case of the measured tool, the process returns to step S1, and the part program execution unit 6 that receives the measurement correction data set completion signal continues the part program, and saves the tool data of the selected tool 1 as tool data. The data is read out from the device 8 as correction data and tool length/tool diameter correction is performed.

By repeating the above steps S1 to S8 until the end of the part program, the numerical control device can:
Machining is controlled by selectively using a plurality of tools 1 having different lengths and diameters. As described above, in this numerical control device, the length and diameter of unmeasured tools are automatically measured and written during execution of the part program.

[0015]

[Effects of the Invention] As explained above, according to the numerical control device of the present invention, the length and diameter of unmeasured tools are automatically measured and written while the part program is being executed. Checking work and tool data writing work can be omitted. Also, as a result,
It is also possible to eliminate the risk of machining errors due to errors in writing tool data, and as a result, the reliability of numerically controlled machine tools can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart illustrating operations in the embodiment.

FIG. 3 is a block diagram showing a conventional example.

[Explanation of symbols]

1 Tools 1a Data carrier 1b Information set section 2 Tool length/diameter measuring device 3 Tool length/tool diameter measurement control section 4 Tool data read/write device 5 Part program storage section 6 Part program execution section 7 Tool data reading control section 8 Tool data storage device 9 Tool data writing control section

Claims (1)

[Claims] Claim 1: means for automatically measuring the length and diameter of a tool; means for writing/reading the length and diameter of the tool measured by the measuring means into/from a data carrier attached to the tool; A numerical control machine comprising means for reading the length and diameter of the selected tool from the data carrier of the selected tool using the writing/reading means and correcting the tool length/diameter when executing the selected part program. In a numerical control device for a machine, an information setting part indicating whether the length and diameter of the tool have been measured is provided in the data carrier of the tool, and the above information indicating that the length and diameter of the tool have not been measured is written from the information setting part of the data carrier. / Means for issuing an unmeasured tool measurement command to the measuring means when read by the reading means, the length and diameter of the unmeasured tool measured by the measuring means in accordance with the unmeasured tool measurement command, and information indicating that the measurement has been completed. means for automatically writing the information into the data carrier of the unmeasured tool and the information set section of the data carrier, respectively, by the writing/reading means;
A numerical control device characterized by being provided with.