JP2559273B2 - Numerical control device and screen display method of numerical control device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a numerical control device (hereinafter, referred to as NC device) for controlling a numerically controlled machine tool (hereinafter, NC machine tool), and in particular, an operator The NC device that has the optimum display screen for confirming the displayed contents and performing the work.

[Prior Art] NC machine tools are normally machined in an automatic mode according to a machining program stored in a memory. At this time, the operator monitors the state of the tool and the processing state of the workpiece. However, the operator operates in the program check mode or the single block mode when checking the machining program for machining the first product. At that time, the operator reads various information displayed on the display screen, judges the state, and performs the next operation to operate the NC machine tool.

[Problems to be Solved by the Invention] However, when the program is checked, the machining information of the NC machine tool required by the operator includes the machining program being executed, various position information of the tool being executed, and Commands such as tool offset information, machining time, load status of each axis of the tool being machined, G function, S function being executed, etc.
There are many block information. Conventionally, since these pieces of information are displayed on separate display screens, the operator operates while switching some display screens, reading the screen information, and making judgments. That is, since the tool offset information is not on the same screen as the machining program information and the coordinate position information, there is a problem in operability such that the contents of both screens need to be stored and calculated in order to determine the tool blade tip position. Therefore, problems such as long program check time, erroneous operation and malfunction due to reading mistakes, judgment flaws, and the like occur.

Also, when a sub program, macro program, etc. is called in the main program of the machining program, which block of the machining program is being executed without displaying the calling process and the number of remaining repetitions of the sub program Although it takes time to judge, and there is a display of the accumulated time of all machining of the work piece, the accumulated time from tool change to tool change necessary to judge which machining took time There is also a problem that the operator has to measure by other means because there is no function to display the time.

The present invention has been proposed in order to solve the above problems, and displays information necessary for the operator to work on the display screen of the NC device by dividing it on the same screen so that it is easy to see, and the operator makes a mistake in judgment. It is to provide an NC device having a machining information screen that can eliminate erroneous operations.

[Means for Solving the Problems] In order to solve the above problems, the following means were adopted.

A first means stores a screen display unit for displaying various display data relating to the numerical control device, a ROM memory storing a system program of the numerical control device, a machining program, a sub program, a macro program and the like. Machining program information file, a subprogram information file that stores subprogram call information consisting of the subprogram call progress status of the subprogram, the number of times the subprogram is called, or the remaining number of calls, and the tool offset of each tool Tool offset information file that stores information, position control means that positions and controls each moving part by driving the servo motor of each control axis, and position information file that stores position information from this position control means And the load condition of the spindle and each control axis is detected. A load detection device I / O device to which a load detection device is connected, and a screen of the screen display section, which displays machining program information including machining program information including the machining program being executed and the subprogram calling information. Area, work coordinate system, coordinate position information display area for displaying coordinate position information including position information in the machine coordinate system, load monitor information display area for displaying load monitor information indicating load states of the spindle and the control axes, A tool offset information display area that displays the tool offset information of the tool currently in use and the tool that will be used next time, and a command block that displays command block information that indicates the status of the current command block such as G function and S function. During processing including the information display area and the time from one tool change to the next tool change A screen display control unit for controlling at least divided display in a processing time information display area for displaying information, and a central processing unit for controlling and controlling the screen display control unit, the position control means, the memories, and the files. By displaying each of the information pieces in each of the divided areas on the same screen, the operation of the numerically controlled machine tool is transmitted without performing a screen selection operation by the input means of the numerical control device. The numerical control device is characterized in that

A second means is the numerical control device according to the first means, wherein the screen display control part includes a tool locus information display area for displaying tool locus information on a part of the screen display part. When the operation mode of the numerically controlled machine tool is the single mode, the machining program being executed is pre-read, and if the pre-read block is a movement command, the tool is displayed before the movement command is executed. The numerical control device is characterized in that a tool locus is drawn as tool locus information corresponding to a movement amount, a movement direction, and a feed type in a vector form.

A third means is a screen display unit that displays various display data related to the numerical control device, a screen display control unit that controls the screen of the screen display unit so that the screen can be divided and displayed in a predetermined area,
Stores the system program of the numerical control device
A ROM memory, a machining program information file that stores machining programs, subprograms, macro programs, etc., a tool offset information file that stores tool offset information for each tool, and a servo for each control axis for each moving part Position control means for positioning / controlling by driving a motor, a position information file storing position information from the position control means, the screen display control section, the position control means, the memories and the files. Even in a screen display method of a numerical controller having a central processing unit for controlling and controlling, a subprogram call information including a subprogram call progress status of the subprogram, a number of times the subprogram is called, or a remaining number of calls is stored. A sub-program information file is provided to The load detection device load detecting device for I / O device connected for detecting a load state of the control shaft is provided,
The screen display control unit controls the screen display control unit to display a machining program information display area for displaying machining program information including the machining program being executed and the subprogram call information, a work coordinate system, and position information in the machine coordinate system. The coordinate position information display area that displays the coordinate position information, including the load monitor information display area that displays the load monitor information that indicates the load status of all model axes and the control axes, the tool currently in use and the tool that will be used next time Tool offset information display area that displays tool offset information, command block information display area that displays command block information that shows the current command block status such as G function and S function, and the next tool change from the time of tool change Machining time information display that displays machining information including time until With at least divided into A,
By displaying each information in each of the divided areas and displaying the information in a divided manner on the same screen, the operation of the numerically controlled machine tool can be performed without performing the screen selection operation by the input means of the numerical control device. It is a screen display method of a numerical controller characterized in that it can be performed.

[Operation] According to the NC device according to the present invention, the operator has the following information: machining program information, tool offset information, coordinate position information,
Since load monitor information, command / block information, and machining time information can be obtained on the same screen display screen of the main screen, each information can be properly read and judged at the time of various operations. Can operate NC machine tools.

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

FIG. 1 is a block diagram showing an NC device having a display screen according to the present invention, and FIG. 2 is a diagram showing a display example in which processing information is displayed on the same screen display unit.

As shown in FIG. 1, the NC unit 1 is a central processing unit (CP
U) 2 has a bus line 20 connected to the CPU 2. The CPU 2 has a ROM (read only memory) memory 3 storing a system program for an NC system, a RAM (random access memory) memory 4 storing and holding data, parameters, etc., via a bus line 20. Machining program information file 5 that stores machining programs, execution program information file 6 that stores selected machining program information to be executed, subprogram call information file 7, clock signal generating clock 8, tool path information A file 9 and a tool offset information file 10 storing the offset information far of each tool are connected. Similarly, the screen display unit (CRT) 12 is connected to the bus line 20 of the CPU 2 via the display screen control circuit 11 having a display switching control unit, a color selection control unit, etc., and the I / O device (13a, 14)
a, 15a), keyboard 13, manual pulse generator 14, load detection device 15 for detecting the load status of the main axis and each control axis
Is connected. The servo motor 18 for driving each axis of the NC machine tool includes a position control circuit 16 and a servo amplifier 17.
The position control circuit 16 is connected via
Also connected to 19. Also, the execution program information file 6,
Each information of the sub-program information file 7, clock 8, tool path information file 9, tool offset information file 10, position information file 19 is transmitted to the display screen control circuit 11 via the bus line 20, and is transmitted to the CRT 12 respectively. Information is displayed.

The NC device has the above-mentioned configuration, and when processing the workpiece, the operator displays various processing information on the CRT 12 and operates the keyboard 13, the manual pulse generator 14, etc. to control the servo of each axis. Drives the motor 18 etc. to operate the NC machine tool.

FIG. 2 shows an example of the display screen of the CRT 12 of the present invention. For example, the machining program information is displayed in the display area 21a and the machining program for the workpiece stored and selected in the execution program file 6 is displayed. A machining program of 17 blocks is displayed in the machining program display area 21a, and the currently executed block is displayed in a reversed display. The machining program is executed from the upper part, and when it is executed up to the middle of the display block, the machining program display is scrolled, and the machining program being executed is controlled to be the highest level.

When a subprogram call or macro program call is made in the main program of the machining program, the progress status of the subprogram call and the remaining number of subprogram calls are displayed in the display screen subprogram call display area 21b. Program call information is displayed so that which block of which machining program is currently being executed can be determined at a glance. And
The display disappears when the subprogram call and macro program call are completed.

The coordinate position information is stored and held in the position information file 19 and is displayed in the display screen coordinate position information display area 22b. The position display in the work coordinate system set in the work coordinate system and the machine coordinate system based on the machine origin position are used. , A position display in a relative coordinate system in which the position reset by the operator is 0, and a remaining movement amount display indicating the remaining movement amount (within one block) of the movement command are shown. Further, the display screen drawing area 22a is an area for drawing the trajectory of the tool in a vector form, and simultaneously with the movement command, drawing is performed during execution of the machining program. Whether the movement command is fast-forward or cutting-feed can be determined by changing the drawing color or line type. Even if the drawing is a three-dimensional display, XY plane, YZ
It can also be switched by two-dimensional display of the plane and Z-X plane. When the single block mode is selected, the machining program is read ahead, and when the next block is a movement command, the tool path of that block is drawn before the trajectory is set, and the movement distance, movement direction, and fast feed are drawn. The cutting feed can be visually identified, and the machining program can be checked easily in a short time.

Tool offset information is the tool offset information file 10
The tool offset information is read out and displayed in the tool offset information display area 23 on the display screen, and the tool currently mounted on the spindle and the tool length correction amount and tool diameter correction of the tool at the standby position of the automatic tool changer Quantity and tool life time are displayed. The display of the tool offset information is updated when the T code command and the tool replacement command (M06 are executed.
The tool life time is displayed for each tool as the life time setting area and the accumulated time during cutting feed. When the accumulated time during cutting feed reaches the set value, it is determined that the tool has reached the end of its life.

The command block information is displayed in the display screen command block information display area 24, and the G code, S code, F code, and dwell time currently being executed or previously commanded are displayed. For the S code and F code, the command value (S, F) in the machining program and the execution value (S%, F%) after being changed by the override function are displayed.

The load monitor information is displayed in the load monitor information display area 25 on the display screen and indicates the load state (load current value in the display example) of the drive motor (including the spindle motor) of each axis during execution of the machining program. The load monitor is 0-50%
The load is white, 50 to 100% load is yellow, and 100 to 120% load is red, and the load status of each axis can be visually judged instantly, which is used for suitability of machining conditions. .
The maximum value of the tool currently being machined is displayed numerically on the right side of the bar code.

The processing time information is displayed on the display screen Processing time information display area 26
Is displayed in. The displayed contents are the end schedule that displays the scheduled processing end time of the workpiece, the machining time that is the total machining time of the workpiece, the cutting time that is the time during which the workpiece is being fed, and the tool. It is a lap T that displays the accumulated time from the replacement to the next tool replacement, and a current time that displays the current time. This lap T always integrates the time until the tool change and the tool change.
C When the device is in the standby state, stop the integration. or,
The accumulated time is reset to 0 at the same time as the tool is changed and is newly started, but the accumulated time result of the previous tool is displayed for a certain period of time after the tool is changed, so check the time taken for the machining process of the tool. be able to. Finally,
It is also possible to display the time for each tool (the display screen is changed).

Since the display screen is configured in this way, the operator can obtain the necessary processing information without selecting the screen by displaying this screen. Also, if you combine these various reports,
Various effects can be obtained. That is, since the machining program, the coordinate position information, and the tool offset information are displayed on one screen, the tool edge position can be easily obtained by adding or subtracting the numerical values on the same screen. Further, since the machining program, the tool offset information, and the load monitor information are displayed on one screen, it is possible to easily judge the suitability of the machining conditions based on the load state of the tool. By using the tool life time and load monitor information, it is possible to properly judge the tool edge wear state.

[Effect] According to the present invention, all the information necessary for the operation of the operator is displayed on one screen in an easily discriminable manner, so that the following effects are produced.

(1) Since the operation of selecting the display screen is not necessary, it is possible to significantly reduce the check time of the machining program. Since the tool edge position etc. can be calculated with the numerical values on the same screen, calculation mistakes can be eliminated and safety is improved.

(2) When checking the machining program, if the single block mode is set and the prefetched next block is a movement command, the tool locus is drawn in vector form in the drawing area, and the movement amount, movement direction, and feed type Can be visually confirmed, and after the confirmation, a movement command may be executed, which prevents the collision between the workpiece and the tool, and is excellent in safety.

(3) Even when the subprogram is called from the main program for machining, the calling process and the remaining number of times the subprogram is repeated are displayed. Can be determined, and the progress of processing can be grasped immediately.

(4) Since the accumulated time from tool change to tool change can be displayed, the time for each machining process of each tool can be grasped and the time study can be facilitated.

[Brief description of drawings]

FIG. 1 shows an NC to which the screen display method according to the present invention is applied.
FIG. 2 is a block diagram of the apparatus, and is a display screen diagram according to the screen display system of the present invention. 2 ... Central processing unit (CPU) 5 ... Machining program information file 6 ... Execution program information file 7 ... Subprogram call information file 8 ... Clock 9 ... Tool path information file 10 ... Tool offset information file 11 …… Display screen control circuit 12 …… Screen display unit (CRT) 15 …… Load detection device, 16 …… Position control circuit 17 …… Servo amplifier, 18 …… Servo motor 19 …… Position information file

Claims (3)

(57) [Claims] 1. A screen display unit (12) for displaying various display data relating to a numerical control device, and a system program for the numerical control device.
ROM memory (3), machining program information file (5) storing machining programs, sub-programs, macle programs, etc., sub-program call progress status of the sub-program, sub-program call count or remaining number of call counts A subprogram information file (7) that stores subprogram call information consisting of, a tool offset information file (10) that stores tool offset information for each tool, and servos for each control axis for each moving part. The position control means (16) for positioning and controlling by driving the motor (18), the position information file (19) storing the position information from this position control means, and the load state of the spindle and each control axis are displayed. Load detection device I / O device (15a) to which the load detection device (15) to be detected is connected
And a machining program information display area (21a, 21b) for displaying machining program information consisting of the machining program being executed and the subprogram calling information on the screen of the screen display unit in the work coordinate system and machine coordinate system. Coordinate position display area (22b) for displaying coordinate position information including position information, load monitor information display area (2b) for displaying load monitor information indicating load states of the spindle and each control axis.
5), Tool offset information display area (23) that displays the tool offset information of the tool currently used and the tool to be used next time, command block information that indicates the status of the current command block such as G function and S function The command / block information display area (24) for displaying and the machining time information display area (26) for displaying machining time information including the time from one tool change to the next tool change are at least dividedly controlled. And a central processing unit (2) for centrally controlling the screen display control unit, the position control means, the memories and the files, and the same screen division unit. By separately displaying the respective information in the respective areas, the numerical control work can be performed without performing a screen selection operation by the input means of the numerical control device. Numerical control device being characterized in that as it allows the manipulation of 械. 2. The numerical controller according to claim 1, wherein the screen display control unit (11) is configured to display a tool locus information display area (22) for displaying tool locus information on a part of the screen display unit.
When the operation mode of the numerically controlled machine tool is single mode, the machining program in execution is prefetched and the prefetched block is a movement command when the operation mode of the numerically controlled machine tool is single mode. A numerical controller characterized in that a tool locus is drawn as tool locus information corresponding to a movement amount, a movement direction, and a feed type in a vector form before a movement command is executed. 3. A screen display unit (12) for displaying various display data related to a numerical control device, and a screen display control unit (11) for controlling the screen of the screen display unit so that the screen can be divided into predetermined areas. Stores the system program of the numerical controller
ROM memory (3), machining program information file (5) that stores machining programs, subprograms, macro programs, etc., tool offset information file (10) that stores tool offset information for each tool, A position control means (16) for positioning and controlling each moving part by driving a servo motor (18) of each control axis; a position information file (19) storing position information from this position control means; A screen display method of a numerical controller having a screen display controller, the position control means, a central processing unit (2) for controlling and controlling each of the memories and the files, the subprogram calling progress status of the subprogram. , A subprogram that stores subprogram call information consisting of the number of times the subprogram is called or the remaining number of calls. Provided the ram information file (7), the main shaft and the load detecting device (15) is a load detecting device for I / O device connected for detecting a load state of each control shaft (15a)
By providing the screen display unit by the screen display control unit (11), a machining program information display area (21a, 21b) for displaying machining program information consisting of the machining program being executed and the subprogram calling information, A coordinate position information display area (22b) for displaying coordinate position information including position information in the work coordinate system and machine coordinate system, and a load monitor information display area for displaying load monitor information indicating the load state of the spindle and the control axes. (25), a tool offset information display area (23) for displaying the tool offset information of the tool currently in use and the tool to be used next time,
Command block information display area (24) that displays the command block information that shows the current command block status such as G function and S function, and machining time including the time from the tool change to the next tool change The numerical control is performed by at least dividing the processing time information display area (26) for displaying information, displaying each of the information in each of the divided areas, and displaying each of the information in a divided manner on the same screen. A screen display method for a numerical control device, characterized in that the numerically controlled machine tool can be operated without performing a screen selection operation by an input means of the device.