JP2813079B2 - Numerical control unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control apparatus for displaying the operation of a machining program by animation, and more particularly, to an animation function suitable for performing a machining program check and machining simultaneously using a single block function. And a numerical controller having the same.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram of a conventional numerical control device for simultaneously checking a machining program and machining using a single block function, and will be described below with reference to the drawings. The machining program memory 1 stores a machining program as shown in FIG. The operation panel 2 includes a start button 21 and a single block switch 2.
The machining program execution processing unit 3 is activated when the activation button 21 is pressed. The machining program execution processing unit 3 sequentially reads the block data of the machining program stored in the machining program memory 1, analyzes the contents, and sends an operation command to the interpolation processing unit 4. The interpolation processing unit 4 obtains a moving distance for each control unit time from the current position of the tool, the end point position of the operation command , the feed speed, and the like, and calculates a command position obtained by moving the current position by the moving distance for each control unit time, The process of sending the command position to the servo driver 5 and the tool drawing unit 9 is repeated. When the current position has reached the end point position, the process ends, and waits for the next operation command . The servo driver 5 drives the servo motor 6 to smoothly move the tool 7 to the command position. As a result, the raw material 8 is processed into a desired shape. The tool drawing unit 9 displays a tool figure 101 on the display screen 10 based on the input command position.
And a tool locus 102 are drawn. That is, the display device 1
The tool graphic based on the previous command position displayed on 0 is erased to draw the tool graphic 101 based on the new command position, and the portion of the material graphic 103 overlapping the tool graphic 101 is erased. Further, the tool locus 102 is drawn from the previous position to the new command position. Short time to the current command position is issued from the previous commanded position, the moving distance looks like animation tool graphic 101 to process the material shapes 103 to move the operator for less.

When the single block switch 22 is "OFF", the machining program is continuously executed until it is completed. When the single block switch 22 is "ON", the operation is stopped as soon as one block of the machining program is completed. The next block is not executed until the start button 21 is pressed by the operator. With this function, the operator can determine in advance whether or not the next block can be executed, and perform the first article processing.

The contents of the block of the program being executed, the contents of the next block, the current position of the tool, the amount of remaining movement of the tool with respect to the end position, the number of spindle revolutions, the tool number, and the machine operation status such as coolant are displayed on the display device 10. Then, the worker determines whether or not the next block can be executed based on these.

[0005]

By the way, as described above, in the conventional numerical control device, when checking whether or not a machining program is created accurately while performing machining, the machine is stopped one block at a time in the machining program. Use the single block function to perform machining while confirming and confirming, and perform machining by displaying the operation of the machining program as an animation, but the animation displayed on the display device is synchronized with the machine operation, so there is a danger on the display In some cases, it was not possible to avoid the problem even if it discovered a strange action. In addition, in order to perform the machining safely by judging in advance whether the next block can be executed or not, the operator must read the machining program and understand the movement, and it is quite difficult to quickly judge the danger such as collision. Met. Furthermore, it is technically easy to display the tool trajectory prior to machining, but it is difficult to confirm the interference state between the material and the tool only with the tool trajectory. However, there is a problem that the operation range cannot be specified and it is not possible to determine whether or not execution is possible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a numerical control device which enables an operator to easily determine whether or not to execute the next block when a single block of a machining program is stopped. To provide.

[0007]

SUMMARY OF THE INVENTION The present invention provides a processing program.
Press the start button and the machining program memory
Each time the machining program is stored in the machining program memory.
Processing program that reads one block of the program and sends it to the interpolation processing unit
Ram execution processing unit and command of one block of machining program
Drives the servo motor based on the
The interpolation processing for processing a material by moving a combined tool
Display the tool figure and the material figure on the display device
The tool graphic is moved in accordance with the movement of the tool, and the material graphic is moved in accordance with the processing shape of the material.
Processing by the machine tool by deforming and drawing
The object of the present invention is to provide a numerical control device that displays one block activated by the activation button.
When the machine tool stops after completing the mechanical operation of
A block before activation by the activation button,
Mechanical movement of the block to be executed next the dynamic has been one block
The engineering tool figure及beauty Material figure at the time of completion of the work, the tool
Tool figures corresponding to the above and material figures corresponding to the above-mentioned materials
In addition, this is achieved by providing virtual drawing means for displaying on the display device .

[0008]

According to the present invention, each time the start button is pressed,
By using the single-block function of executing machining program block by block, to correspond to the actual movement of the tool by deforming the material shape with moving Engineering <br/> tool shape and during the handling operations to draw , One block by operating the start button
When the operation of the block is completed and the machine tool stops , the tool graphic and the material graphic at the time when the operation of the next block is completed are displayed in addition to the material graphic and the tool graphic at that time. The operator can determine whether the next block can be executed normally before execution.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of an embodiment of a numerical control device according to the present invention. The components other than the machining program execution processing unit 3A and the virtual tool drawing unit 11 are the same as those of the conventional example, and therefore the same reference numerals are given and the description is omitted. Machining program execution processing unit 3A reads the block data of a machining program sequentially analyzes the content, sends the operation command to the virtual tool drawing unit 11 then sends the operation command to the interpolation processing unit 4. The virtual tool drawing unit 11 displays the display device 10 based on the operation command.
Virtual tool 104, virtual locus 105 and machining area 106
To draw.

The virtual tool 104 represents the tool at the end point position, and can be distinguished from the tool figure 101 by changing the color, luminance, pixel pattern, line type, line thickness, and the like. The processing locus 105 represents a locus during which the tool graphic 101 moves from the current position to the end point position, is drawn between the current position and the end point position, and has a color, a luminance, a pixel pattern, a line type, and a line thickness. By changing the tool path and the like, the tool path 102 can be identified. The processing area 106 is an area that interferes with the material graphic 103 while the tool graphic 101 moves from the current position to the end point of the operation command. There is a method of geometrically obtaining and drawing the shape of the processing area from the shape, the current position, the end point position, and the like.
Changes the color, luminance, pixel pattern, line type, line thickness, and the like so that the material figure 103 can be identified.

FIG. 2 is a flowchart showing a detailed process of the machining program execution processing unit 3A. When the execution of the machining program execution processing unit 3A is started, first, 0 is assigned to a block pointer which is a variable indicating a read block number of the machining program memory 1 shown in FIG. 6 (step S1). Next, one block data designated by the block pointer is read from the machining program memory 1, and the contents are analyzed to calculate an end point position, a feed speed, and the like, and generate an operation command (step S2). The virtual tool drawing unit 11 operates from the machining program execution processing unit 3A.
Upon receiving the command , the virtual tool 104, the virtual trajectory 105, and the processing area 106 are drawn (step S3).

First, it is determined whether or not the execution is for the first time (step S4). If the execution is for the first time, that is, if the machining program is in a state of waiting for activation, the process proceeds to step S5 and waits until the activation button 21 is pressed. On the other hand, if the execution of the machining program has already been started and the operation moves to the execution of the next block, the state of the single block switch 22 is checked.
Wait for is pressed. This processing implements the single block function described above. Instead of the first run,
If the state of the single block switch 22 is not "ON", the process proceeds to step S6.

In step S6, it is determined whether the machining program has been completed. If the block analyzed in step S2 is an end code, or if there is no block to be read, it is determined to be ended. If it is determined that the processing is to be ended, the machining program execution processing unit 3A ends the processing. If it is determined that the processing is not to be ended, the processing proceeds to step S7. In step S7, the interpolation processing unit 4 is called to move the tool 7, and at the same time, the display device 10
The tool figure 101 is drawn. When the above processing is completed, 1 is added to the block pointer (step S8), and the process returns to step S2. Hereinafter, this operation is repeated until it is determined in step S6 that the machining program has been completed.

FIGS. 3 and 4 are diagrams showing a specific example of a drawing method in the numerical controller according to the present invention. FIG. 3 (A)
Is the sequence number N0 in the program shown in FIG.
6 is a diagram showing a state in which a single block is stopped before execution of Step 6 in the flowchart shown in FIG. The machining area and the tool position at the completion of machining with the sequence number N06 have already been drawn in the process of step S3 in the flowchart shown in FIG. 2, and the worker has the next block from the machining area 106, the virtual trajectory 105, and the virtual tool 104 Is activated or not, and then the start button 21 is pressed to execute the block with the sequence number N06. FIG. 3B is a diagram showing that the block with the sequence number N06 is being executed. In the flowchart shown in FIG. 2, this is the stage of step S7. The display device 10 shows that the tool figure 101 moves in synchronization with the actual movement of the tool and the machining area 106 is erased.
Is animated.

When the tool graphic reaches the end point and step S7 in FIG. 2 is completed, the process returns to step S2 via step S8, and the sequence number N07 is analyzed. In step S3, the machining area and the tool position at the time of completion of machining with the sequence number N07 are drawn, and after step S4, the single block is stopped again as shown in FIG. 4A. As in the previous case, when the start button 21 is pressed, the execution of the block of the sequence number N07 is started, and FIG.
Is a diagram showing a state during the execution.

When the single block switch 22 is in the "OFF" state, the state does not go to the step S5 in FIG. 2, so that the next block is executed irrespective of the start button 21.

[0017]

As described above, according to the numerical controller of the present invention, when the single block is stopped, the processing schedule of the next block to be executed is displayed, so that the operator can easily determine whether the next block can be executed. Since the judgment can be made, the checking of the machining program and the machining can be simultaneously performed safely.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of a numerical controller according to the present invention.

FIG. 2 is a flowchart showing details of a machining program execution processing unit 3A.

FIG. 3 is a diagram showing a specific example of a drawing method in the numerical control device of the present invention.

FIG. 4 is a diagram showing a specific example of a drawing method in the numerical control device of the present invention.

FIG. 5 is a block diagram of a conventional numerical controller that simultaneously checks a machining program and performs machining using a single block function.

FIG. 6 is a diagram showing a machining program stored in a machining program memory 1.

[Explanation of symbols]

 3A Machining program execution processing unit 11 Virtual tool drawing unit

Claims (1)

(57) [Claims] 1. A machining program for storing a machining program.
Memory and the machining program each time the start button is pressed.
Read one block of machining program from RAM memory
A processing program execution processing unit to be sent to the interpolation processing unit;
Servo motor based on the command of one block of the program
Drive and move the tool connected to the moving part of the machine tool
The interpolation processing section for processing a material, and
The tool graphic and the material graphic are displayed, and the tool graphic is moved in accordance with the movement of the tool, and the processing shape of the material is changed.
By deforming and drawing the material figure in accordance with
In a numerical control device for displaying a state of machining on a machine tool, one block of machine operation activated by the activation button is provided.
When the machine tool is stopped and the start button is
Block before activation by the
Then the factory fixture graphic及beauty Material shapes upon completion of the mechanical operations of the blocks are executed in the lock, corresponding to the tool Engineering
In addition to the fixture figure and the material figure corresponding to the material, the table
Numerical control device being characterized in that example Bei virtual drawing means for displaying the shown device.