JPS5973227A - Machining state display unit of electric discharge machining device - Google Patents

Abstract

PURPOSE:To increase the freedom and information quantity of display and reduce the hardware cost by displaying the electric discharge machining state on a CRT display unit attached to an NC device by use of graph or numerical value. CONSTITUTION:The electrode position display, machining parameter display, and machining state display can be selected on a CRT unit 18 attached to an NC device by operating a transfer switch 26 in accordance with a selection display 30. The machining state such as the electric discharge efficiency, servo voltage, machining mode, etc. is displayed by an item 20a on the CRT and the bar graph display and numerical value display are made by items 20b, 20c respectively. This display format can be freely set and easily changed by means of the software 24.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a machining status display device for an electric discharge machine, particularly an NC control device with a CII and T display device for control, to control the discharge and The present invention relates to a machining state display device for an electrical discharge machine that displays the machining state of an electrical discharge machine that controls electrode positions relative to the workpiece and performs electrical discharge machining on the workpiece.

The processing conditions described here are, for example, 100(%).

■ Contamination: The amount of machining powder present in the gap between the electrode and the workpiece during electrical discharge machining.

■ Servo voltage: Voltage between the electrode and the workpiece at which a discharge phenomenon occurs for machining.

■ Machining mode: Electrode servo method commanded by the NC control device.

This term refers to the condition that appears between the electrode and the workpiece during machining, which can be determined by

Conventionally, as this type of machining status display device, a display device using a seven segment display as shown in Fig. 1 or a display device using a third
Light emitting diode (hereinafter referred to as LED) as shown in the figure
A display device is known in which data is displayed as the number of light emitting points of LEDs by arranging LEDs.

The operation of this type of conventional device will be explained below. 1st
In the display device using the seven-segment display 10 shown in the figure, necessary data is obtained in the form of numerical values by displaying desired data using the display changeover switch 12 shown in FIG. The display device shown in Fig. 1 not only shows the machining status, but also displays the position (distance from the machine origin, movement position from the NC command, command value remaining distance @:), and parameter display (how to issue the NC command). It is a very economical and multi-functional display device because it can display instructions such as control instructions, instructions on whether to operate additional functions, etc. using a single display device, but it is also capable of displaying a large amount of data at once. I can't. In addition, machining conditions change rapidly and a large amount of data must be viewed and judged at once in many cases, resulting in the disadvantage that it is difficult to make accurate decisions.

On the other hand, in the display device shown in FIG. 3, it is possible to display up to several kinds of printed processing status items 14 using the LED 16 in accordance with rapidly changing data. However, the display device shown in FIG. 3 requires the use of large hardware in order to view a large amount of data at once, which is disadvantageous in terms of cost. Furthermore, since it is an LED display, it is difficult to know the exact numerical value with the desired accuracy. Also, the first
A common drawback of the display devices of FIG. 3 and FIG. 3 is that the hardware must be rebuilt each time the system changes, resulting in a lack of adaptability to system changes.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to display the machining status all at once at high speed using a CRT display device attached to an NC control device. An object of the present invention is to provide a machining status display device for an electric discharge machine with almost zero hardware cost.

In order to achieve the above object, the present invention is an electric discharge machine equipped with an NC device with a CRT display device for control, and is characterized in that the machining state during electric discharge machining is displayed on the CRT display device using numerical values or graphs. shall be.

Hereinafter, preferred embodiments of the present invention will be described based on the drawings. FIG. 3 is a very schematic diagram of the structure of the machining status display device of the present invention. In FIG. 3, the CR1 display device 18 is configured to display machining state items 20a1, bar graph display 20b1 of machining state, and numerical display 20c of machining state in display section 20.

These displays show numerical values indicating the machining status on a CRT.
The central processing unit (CPU) 22 that drives the display device and the software 24 (control program in memory) are configured to convert and display various types of machining status data into numerical characters and bar graphs. You can display as much as the screen allows. Since this display device can change the display as required by changing the software, the configuration of what is displayed can be quickly changed in accordance with advances in electrical discharge machining technology. Furthermore, a dedicated display screen switching switch 26 can be added to the NC control device to configure it as a comprehensive display device. That is, by providing the switch reading interface circuit 28 that reads the data of the display screen switching switch 26, the screen switching request information is input to the central processing unit 22, and the corresponding screen is stored in the software 24 (memory). The display is performed by executing a control program (internal control program), and the user can arbitrarily select the position display, parameter display, etc. along with the machining status display. A screen selection display 3° is displayed on the display section 20 of the CRT display device 18. The NC control device is provided with an interface circuit 32 for reading machining conditions.

As described above, according to the present invention, the state of electrical discharge machining is displayed as easily as possible for the operator to see as much information as possible by using the CRT display device attached to the NC device for controlling the electrical discharge machine. This allows workers to quickly and clearly recognize the machining status at a glance. Further, since the CRT display device attached to the NC device is used, the hardware cost can be reduced to zero, and effects such as being able to quickly and inexpensively respond to changes in the development of processing machines can be obtained.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional machining status display device using seven segments, Figure 2 is a front view of a p-indicator switch, and Figure 3 is a front view of a conventional machining status display device using LEDs. FIG. 4 is a very schematic front view of a machining status display device of the present invention using a CRT display device. Identical parts in each figure are designated by the same reference numerals. 18 is a CRT display device, 20 is a display unit, 22 is a central processing unit, 24 is software, 26 is a switch for switching display screens, and 28 is an interface circuit for reading switches. , 30 is a screen selection display, and 32 is an ink face circuit for reading processing status. Agent Patent attorney Shin Kuzuno - (1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Figure 1 (

Claims (1)

[Claims] (1) A machining state of an electrical discharge machine equipped with an NC device with a CRT display device for control, characterized in that the machining state during electrical discharge machining is displayed on the CRT display device using numerical values or graphs. Display device.