JPH03273304A - Numerical controller - Google Patents

Abstract

PURPOSE:To reduce the burden of a machine control part to work parts at a high speed with a high precision by providing a communication controller with a transmission data generating part and a reception data converting part. CONSTITUTION:In a communication controller 4, code conversion and format generation are performed by a transmission data generating part 15 so that control information or data can be read by another device 1 having the communication function. Code conversion is performed by a reception data converting part 12 so that communication data transmitted from another device 1 having the communication function can be read by a numerical control part. Data is transmitted to and received from the numerical control part by a reception data buffer managing part 16 and a transmission data buffer managing part 17, and the numerical control is performed by the numerical control part based on reception data which is delivered from managing parts 16 and 17 and is subjected to code conversion.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a numerical control device capable of communicating with other devices having communication functions.

[Prior Art] Conventionally, a communicable numerical control device (for example, a numerically controlled machine tool) that is connected to another device having a communication function (for example, a computer) through a communication line has been known. When transmitting and receiving processed data and control information via a communication line, the CPU of the numerical control device can be This reduces the load on the system and prevents the numerical control processing capacity from decreasing.

FIG. 3 is a block diagram showing the configuration of a conventional numerical control device having a communication control section, and the numerical control device NC is connected to a device 1 having a communication function via a communication line COM.

The numerical control device NC has CPU2, and C
The PU 2 includes a memory 3 that temporarily stores control programs and processing data that control the entire numerical control device NC, a communication control device 4 that communicates with the device 1 having a communication function, and a control device 4 that controls the numerical control device NC. A machine control device 5 to which machine tools and the like to be operated are connected is connected by a bus 10.

Furthermore, the CPU 2 includes a keyboard 6, a CRT 7, a paper tape reader 8 for reading the NC program from a paper tape,
An external storage device 9 for storing a control program and processing data for controlling the entire numerical control device NC is connected,
The external storage device 9 is composed of a hard disk, bubble memory, floppy disk, etc.

Further, as shown in detail in FIG. 4, the communication control device 4 has a transmission/reception control section 11 that transmits and receives data to and from the device 1 having a communication function.

Furthermore, the machine control device 5 has a reception data conversion section 12 that converts the format of reception data manually inputted through the transmission/reception control section 11, and the reception data conversion section 12 includes a processed data management section that manages processed data. 13 and a machine control section 14 for controlling a machine tool connected to the numerical control device NC.

The machine control section 14 is connected to a processing data management section 13 and a transmission data creation section 15 that converts the transmission data into a format for the device 1 having a communication function. It is connected to the.

Next, the operation will be explained.

When performing machining by controlling a machine tool connected to the numerical control device NC, the CPU 2 reads the control program and machining data from the external storage device 9 and temporarily stores the read control program and machining data in the memory 3. .

Then, the CPU 2 inputs the machining data SA from the machining data management section 13 to the machine control section 14 according to the control program stored in the memory 3, and the machine control section 14 inputs the machining data SA managed by the machining data management section 13. Based on this, the moving parts of the machine tool are controlled to perform machine work.

At this time, if the machining data is changed by the machine control section 14, the changed machining data SB is registered in the machining data management section 13.

Further, when the numerical control device NC receives data SG from the device 1 having the communication function, the communication data SG sent from the device 1 having the communication function via the communication line COM is as follows.
received by the transmission/reception control unit 11 in a communication order predetermined by the transmission/reception control unit 11 and the device 1 having a communication function,
The data is sent from the transmission/reception control section 11 to the reception data conversion section 12 as reception data SH.

Then, the received data converter 12 checks the data type of the received data SH, and if the data is a control command used by the machine controller 14, converts it into a format that can be read by the machine controller 14, and performs format conversion. Control data Sl is input to the machine control section 14.

Then, the machine control unit 14 receives the manually input control data S.
Control the machine tool based on l.

In addition, the reception data SH received by the reception data conversion unit 12
When determining that the type of data is processed data, the received data conversion unit 12 converts the received data SH into the same format conversion as the processed data managed by the processed data management unit 13 (for example, if the received data SH is sent in an ISO code). AS the data
CII or character numerical data to binary data), and inputs the converted processed data SJ to the processed data management section 13, which manages and registers this processed data SJ.

Furthermore, the received data SH received by the received data converter 12
When determining that the data type is a processed data transfer request, the received data conversion unit 12 converts the received data SH into a format that the processed data management unit 13 can read, and processes the format-converted processed data transfer request SJ-. The information is input to the data management section 13.

Then, the processed data management unit 13 issues a processed data transfer request S.
The requested processed data SD of the processed data managed by J- is output to the transmission data creation section 15, and the transmission data creation section 15 converts it into a format that can be read by the device 1 having a communication function.

Then, the transmission data creation section 15 inputs the format-converted data SE to the transmission/reception control section 11, and the data is sent as communication data SF from the transmission/reception control section 11 to the device 1 having communication capability via the communication line COM.

On the other hand, when a change in event occurs in the machine tool controlled by the machine control unit 14, such as an abnormality, a stop at -, or completion of machining, the machine control unit 14 outputs event information to the transmission data creation unit 15,
The transmission data creation unit 15 converts the data into a former format that can be read by the device 1 having a communication function.

Then, the transmission data creation section 15 inputs the format-converted transmission data SE to the transmission/reception control section 11, and is sent as communication data SF from the transmission/reception control section 11 to the device 1 having a communication function via the communication line COM.

[Problem to be Solved by the Invention] Since the conventional numerical control device is configured as described above, when controlling the mechanical moving parts of a numerically controlled machine tool based on the machine program SA, it is necessary to In order to process parts at high speed and with high precision by shortening the movement distance of the blocks and processing the block group at high speed, a large processing load is placed on the machine control section 14, and the reception data conversion section 12 and transmission The processing of the data creation unit 15 is delayed and the communication control device 4 is forced to wait, resulting in communication abnormalities, lowering the communication speed and lowering the communication capacity, etc.
Conversely, the processing of the machine control section 14 is forced to wait for the processing of the received data conversion section 12 and the transmission data creation section 15, and the moving parts of the machine are stopped between blocks of the machine program, making it impossible to perform high-speed and high-precision parts machining. The problem was that there was no.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a numerical control device that can reduce the processing of a machine control section and perform high-speed, high-precision parts machining.

[Means for Solving the Problems] A numerical control device according to the present invention includes a numerical control unit that performs numerical control of a connected machine, and a code conversion unit that converts control information or data so that it can be read by another device having a communication function.・Transmission data creation unit that creates a format 1 A reception data conversion unit that converts communication data sent from other devices with communication functions so that it can be read by the numerical control unit; and a data management unit that transfers data to and from the numerical control unit. A communication control device comprising:

[Function] The numerical control device according to the present invention is a communication control device in which code conversion and format creation are performed by a transmission data creation section so that control information or data can be read by another device having a communication function, and the numerical control device also has a communication function. The received data conversion unit converts the communication data sent from another device so that it can be read by the numerical control unit, the data management unit transfers the data to the numerical control unit, and the code has been converted from the data management unit. The numerical control unit performs numerical control based on the received data.

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

As shown in FIG. 1, the communication control device 4 includes a transmission/reception control unit 1 that transmits and receives data to and from a device 1 having a communication function.
1, and the transmission/reception control unit 11 is connected to a reception data conversion unit 12 that converts input reception data into a format, and a transmission data creation unit 15 that converts transmission data into the format of the device 1 having a communication function. ing.

A reception data buffer management section 16 is connected to the reception data conversion section 12 for temporarily storing data when data is received and transferred between the communication control device 4 and the machine control device 5, and The data creation unit 15 includes a transmission data buffer management unit 1 that temporarily stores data when receiving and passing data between the communication control device 4 and the machine control device 5.
7 is connected.

In addition, the reception data buffer management section 16 and the transmission data buffer management section 17 are provided with a machining data management section 13 that manages machining data contained in the machine control section N5, and a machine tool that is connected to the numerical control device NC. Machine control units 14 are connected to each.

The machine control section 14 is connected to the machining data management section 13.

Furthermore, the reception data buffer management section 16 has a reception data buffer 101, and a plurality of reception data buffers 101 are prepared to avoid being unable to receive other data until the machine control device 5 reads the data. (See Figure 2(b)).

Further, the transmission data buffer management unit 17 has a transmission data buffer 102, and a plurality of reception data buffers 102 are prepared so that the communication control device 4 can set the next transmission data while transmitting data. There is (second
(See figure (c)).

Next, the operation of this embodiment will be explained.

A case will be described in which the device 1 having a communication function requests the tool life value and correction value of the tool from the machine control device 5, and the machine control device 5 returns the data in response to the request.

Note that the device l having the communication function is a device that can only handle character data, and the machine control device 5 manages the tool code (for example, a value obtained by removing T from TOOI) as integer type binary data, and It is assumed that the values and correction values are managed as real number type binary data.

Further, as shown in FIG. 2, in order to distinguish between character data and binary data, character data is a part surrounded by ", and binary data is a part directly containing numerical values.

In the communication data format, the first five characters represent the type of data, and the delimiter is ''.
%' is set, followed by the actual data, and '%' is set at the end of the data.

FIG. 2(a) shows communication data sent by the device 1 having a communication function to the numerical control device NC requesting the tool life value and correction value of Tool.'C,T.

L' is the type of data that means requesting the tool life value and correction value, and 'TOOI' is the actual data, requesting the tool life value and correction value of Tool.

The transmission/reception control unit 11 that receives the data 100 shown in FIG. 2(a) outputs the received data 100 to the received data conversion unit 12.

Then, the reception data conversion unit 12 that manually processes the reception data 100 checks the type of data using the first five characters of the reception data 100, and converts it into data that can be read by the machine side@device 5 (for example, if the integer value 10 is (refer to FIG. 2(b)).

Then, since the machine control bag flf5 manages the tool code as integer type binary data, the received data 100
'TOOI', which is the actual data of , is converted to 1, which is integer type binary data.

The data converted in this way is set in the reception data buffer 101 which is constituted by the type of data managed by the reception data buffer management section 16 and the actual data (see FIG. 2(b)).

Then, the reception data buffer 101 temporarily stores the data until the machine control device 5 reads the data, and then transfers the data to the machine side grJ device 5.
checks the received data buffer 101 at predetermined time intervals, and reads out data if it contains data.

Note that the machine control device 5 may read the reception data buffer 101 in response to an interrupt caused by the communication control device 4 setting received data in the reception data buffer 101.

Then, the communication control device 4 that has read the data from the reception data buffer 101 takes out the life value and correction value of tool number 1 in the machining data management unit 13, and transmits the data to the communication control device r114 without converting the data. The data is set in the transmission data buffer 102 of the data buffer management section 17 (see FIG. 2(C)).

In addition, the type of data is 100 (tool life value and correction value data), and the life value of tool number 1 is 1 as the actual data.
000. Long sleeve positive value or 11.0.19 diameter correction value 30.3
It is set at 21.

Then, the transmission data buffer management section 17 of the communication control device 4 outputs the data set in the transmission data buffer]02 to the transmission data creation section 15.

Furthermore, upon receiving and receiving data from the transmission data buffer 102, the data creation unit 15 converts the data type 100 into communication data types for transmitting tool life values and correction values 'D, TO.
L', convert all the actual data parts to character strings, set ' as a delimiter between each character string, and transmit data 103.
(see FIG. 2(d)) and outputs it to the communication #J control device 4, and transmits the data 10B to the device 1 having a communication function.

[Effects of the Invention] As explained above, according to the present invention, a communication control device performs code conversion and format creation by a transmission data conversion unit so that control information or data can be read by another device having a communication function, In addition, communication data sent from another device having a communication function is configured so that the code is converted by the reception data conversion unit so that the numerical control unit can read it, and the data is transferred to and from the numerical control unit. It is possible to reduce processing, prevent communication abnormalities from occurring, and eliminate the need to reduce communication speed and communication capacity. In addition, the processing of the machine control unit is not made to wait, and the movable part of the machine is prevented from stopping between blocks of the cannibal program, allowing high-speed, high-precision parts machining.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a communication control device according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of format conversion of communication data, and FIG. 3 is a block diagram showing the configuration of a numerical control device. FIG. 4 is a block diagram showing the configuration of a conventional communication control device. 1...Other devices with communication functions 4...Communication control device 5...Machine control device 12...Reception data conversion section 15...Transmission data creation section 16.17...Data management section NC... Numerical control device

Claims (1)

[Scope of Claims] A numerical control device that is equipped with a numerical control unit that performs numerical control of a connected machine and that can communicate with another device that has a communication function, wherein control information or data is transmitted to the other device that has a communication function. A transmission data creation unit that converts codes and creates a format so that the data can be read, a reception data conversion unit that converts communication data sent from other devices with a communication function into codes so that it can be read by the numerical control unit, and a numerical control unit. A numerical control device comprising a communication control device comprising a data management section that transfers data.