JPH0222711A - Nc machine tool - Google Patents

Abstract

PURPOSE:To improve the workability and to reduce the cost of equipment by combining an NC machine tool and a cell controller to constitute a system. CONSTITUTION:When the operation state of an NC device is displayed with coordinate values of tools or the like normally or the manual operation is performed, the normal mode is set. When a function related to the cell controller, for example, NC program transfer is performed, the terminal mode is set. Then, all of these operations can be performed with a keyboard 10 and a CRT screen 12 to improve the operability. Therefore, a machine having an NC unit 14 which controls a motor 16, the keyboard 10 from which manual operation inputs are given, and the CRT screen 12 is provided with a mode changeover switch 20; and when the terminal mode is set, information from the keyboard 10 is sent to a host computer and information from this computer is displayed on the CRT screen 12 by a bidirectional communication means 18.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an NC machine tool.

In recent years, NC machine tools such as NC milling machines, NC lathes, and NC electric discharge machines are being connected to a host computer, or even connected to multiple NC machine tools, to achieve advanced FA, rather than being used alone. In addition, many of the control panels are equipped with CRT screens to improve operability. The present invention refers to such an NC machine tool.

[Conventional technology]

FIG. 5 is a diagram showing a system consisting of two NC machine tools 50 and 51 and a host computer or cell controller 52 connected to them, as a typical form of an FA system including the above-mentioned NC machine tools. be.

The cell controller 52 includes CRT terminals 54, 55 and 5.
6 is connected. The CRT terminal 54 is for controlling and monitoring the NC machine tool 50 from the cell controller 52 side, and the CRT terminal 55 is for controlling and monitoring the NC machine tool 51. Here, control means, for example, N
This includes the transfer of a C program, and the monitoring includes, for example, displaying the machining results of each NC machine tool. In addition, CRT terminal 5
6 covers two NC machine tools 50 and 51 and is used to comprehensively manage the entire system. Furthermore, C
In addition to the case where the RT terminals 54, 55 and 56 are provided as separate devices as shown in the figure, the functions of a plurality of terminals may be combined into one terminal.

Further, on the side of the NC machine tool 50, 51, a CR7 screen 12 for displaying the operating status of the device, such as tool coordinate values, etc., and a keyboard 10 for manual operation are provided.

[Problem to be solved by the invention]

In the system as described above, for example, the NC machine tool 5
Let us compare and consider the roles of the keyboard 10 and CR7 screen 12 belonging to 0 and the role of the terminal device 54 connected to the cell controller 52.

The former has a function within the scope of the NC machine tool 50, while the latter has a function created in relation to the cell controller 52. However, there is no difference in the fact that all of them are related to the functions of the NC machine tool 50. Therefore, the fact that both are distributed to separate devices is troublesome for the operator and also poses a problem in terms of equipment costs. A similar argument can be made regarding the relationship between the keyboard 10 and CR7 screen 12 belonging to the NC machine tool 51 and the terminal device 55 connected to the cell controller 52.

Therefore, an object of the present invention is to provide an NC machine tool in such a system that has excellent workability and is advantageous in terms of cost.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the NC machine tool of the present invention.

In this figure, the NC machine tool of the present invention includes an NC unit 14 that numerically controls a motor 16, a keyboard 10 that provides manual operation input to the NC unit, and an NC unit 14 that numerically controls a motor 16.
It is equipped with a CR7 screen 12 that displays the operating status of the machine.

The mode changeover switch 20 provided in the NC machine tool of the present invention is for switching between normal mode and terminal mode, and the bidirectional communication means 18 is configured to switch between the mode changeover switch 20 and the terminal mode.
This is for transmitting information entered from the keyboard 10 to the host computer, and for displaying information from the host computer on the CR7 screen 12.

[For production]

Conventionally, when displaying the operating status of the NC device such as tool coordinate values, or when performing manual operation, use the normal mode, and when performing functions related to the cell controller, such as transferring an NC program, etc. Switch to terminal mode. By doing so, all these operations can be performed using the keyboard 10 and the CR7 screen 12, improving operability, and since a part of the terminal device on the cell controller side is not required, equipment costs are reduced.

〔Example〕

FIG. 2 is a block diagram of an embodiment of the NC machine tool according to the present invention. A microprocessor (MPU) 141 connects to a ROM that stores programs via a common bus 140.
142, RAM 143 for storing data, digital input interface 145 for taking in information of key switches 201, digital output interface 146 for output to lamps 202, axis control interface 144 for controlling servo motor 161, Video interface 147 for display on CRT screen 121
and a communication interface 181 for communication with the cell controller 521. Switches 20
1 includes a switch for realizing the mode changeover switch 20 described above, and the other part corresponds to the keyboard 10 (FIG. 1) described above. The communication ink-face 181 is hardware for realizing the bidirectional communication means 18, and the cell controller 521 is connected to the end thereof. Viewed from the cell controller 521 side, the communication line from the communication interface is connected to a terminal to which an operating terminal is to be connected. As will be described later, the communication interface 181 can be shared with a conventional communication interface for connection to the cell controller 521.

FIG. 3 is a processing flowchart of software running on the hardware shown in FIG. 2 as an embodiment of the present invention.

First, check the state of the mode changeover switch 20 (step a) and if it is not the terminal mode, perform normal processing (
Step f). That is, depending on the type of screen that has been set, coordinate values are displayed continuously, for example as shown in FIG. 4A, and when the keyboard is pressed, the display screen is switched or manual operation is performed. (Figure 4A shows program numbers below O, program steps below N, and coordinate values of the three axes X, Y, and Z. This is a typical display screen on an NC machine tool. In terminal mode , then checks to see if there is any input from the keyboard, and if so, sends the corresponding code to the cell controller 5 via the communication interface 181 (FIG. 2).
21 side (step d). If data is input from the cell controller 521 via the communication interface (step C), characters or numbers corresponding to the input code are displayed on the CRT screen 121 (FIG. 2) (step e). Through such processing, the CRT screen 12
1, characters such as those shown in FIG. 4B are displayed, and the same functions as the operating terminal of the cell controller 521 are displayed. In the example of FIG. 4B, the cell controller 52
This is the screen that appears when downloading the Canadian program from the first side to the NC machine tool. The number on the first line is “1234”
” and the character “Y” on the second line are input from the keyboard and are displayed as echo backs.

The communication interface 181 and the communication line connected to it can conventionally be used in common as the communication interface and communication line for connecting the cell controller and the NC machine tool, and in that case, the In order to distinguish that the data is information for functioning as a terminal, an identification code may be added, or the cell controller may be configured to be able to know the state of the mode changeover switch.

〔Effect of the invention〕

As described above, according to the present invention, the N
By constructing a system that combines a C machine tool and a cell controller, an FA with excellent workability and an advantage in terms of equipment cost can be realized.

[Brief explanation of the drawing]

Fig. 1 is a principle diagram of the present invention, Fig. 2 is a hardware block diagram in an embodiment of the invention, Fig. 3 is a software processing flowchart in an embodiment of the invention, and Fig. 4A is in normal mode. FIG. 4B is a diagram showing an example of a display screen in terminal mode; FIG. 5 is a diagram showing a typical conventional FA system. In the figure, 10...Keyboard, 12...CRT screen, 2
0...Mode changeover switch.

Claims (1)

[Claims] 1. An NC unit (14) that numerically controls the motor (16).
), a keyboard (10) that provides manual operation input to the NC unit (14), and a CRT screen (12) that displays the operating status of the NC unit (14). A mode changeover switch (20) for switching between terminal mode and the mode changeover switch (20) transmits information input from the keyboard (10) to the host computer while the mode changeover switch (20) is switched to terminal mode. and a two-way communication means (18) for displaying information from the host computer on the CRT screen (12).