JP2001331212A - Working device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working device capable of moving a working head part from a teaching position at the present point of time to pre-and-post teaching positions indicated by an NC program only by one time of operation. SOLUTION: This working device is provided with a working head 3 to be teaching processed, a teaching box 7 with a step feed button 71 and a step return button 72 for inputting a movement command for moving the working head 3 from a first teaching position to a second teaching position, an NC control part 8 for performing skip processing from a first program line to a second program line corresponding to the second teaching position at the time of receiving one time of input of the movement command from the teaching box 7, and a working machine main body 1 for moving the working head 3 based on the command contents of the second program line. At the time of judging that the command contents of the program line to be judged are command contents related with the teaching position, the NC control part 8 judges that the second program line is detected, and outputs it to the working machine main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus and, more particularly, to a technique for controlling a teaching operation.

[0002]

2. Description of the Related Art A three-dimensional laser processing machine will be described below as an example of a processing apparatus. FIG. 4 is a perspective view of a general three-dimensional laser beam machine system. 1 is a three-dimensional laser beam machine main body, 2 is a processing table that can be moved in the direction of the arrow X, 3 is a processing head, 4 is a Z-axis unit that can move the processing head 3 in the direction of the arrow Z, and 5 is a Z-axis unit. 4 is a Y-axis unit that can move the reference numeral 4 in the arrow Y direction. Reference numeral 6 denotes a laser processing work, ie, a workpiece, set on the processing table 2, reference numeral 7 denotes a teaching box, and reference numeral 8 denotes an NC control unit.

Next, the main configuration of a general three-dimensional laser beam machine will be described with reference to FIG. FIG. 5 is a block diagram showing a schematic configuration of a general three-dimensional laser beam machine. FIG.
In the figure, 103 is an operation unit, and 105 is a laser oscillator.

[0006] FIG. 6 is a flow chart from the creation of a conventional general machining program to the actual machining. FIG.
The procedure from the creation of a general machining program to the actual machining will be described with reference to FIG. The starting step ST101 of the teaching box 7 is a step (step) of performing various settings so that the teaching box can be used. The teaching work step ST102 is a step of performing teaching according to a workpiece using a processing machine. Teaching box operation end step ST1
03 is a step of performing various settings so that the operation unit 103 can be used when the teaching in step ST102 is completed. Speed automatic setting step ST104
This is a process in the operation unit 103 of calculating an optimum speed and adding a speed command to the laser processing program for three-dimensional processing (hereinafter, appropriately referred to as an NC program) created in step ST102 described above. The program search step ST105 is a step of calling the NC program to which the speed command is added from the operation unit 103. The operation confirmation step ST106 is a step of starting the cycle of the NC program from the operation unit 103 and confirming the idle feeding operation that does not emit a laser beam. The NC program correction determining step ST107 is a step of determining whether or not the NC program needs to be corrected on the machining trajectory in the step ST106. NC program modification step ST1
08 is a step of modifying the NC program when it is determined in step ST107 that the modification is necessary.

[0005] NC program starting step ST109
Is a step of starting up an oscillator, which is a laser beam source, and preparing for actual laser processing. The trial machining step ST110 is performed in step ST109.
In this step, the NC program is cycle-started from step 3 and a laser beam is emitted to perform a machining operation. The NC program correction determining step ST111 is a step of determining whether correction on the processing conditions is necessary. The NC program correction step ST112 is a step of correcting the NC program when it is determined in step ST111 that the processing conditions need to be corrected.

FIG. 7 is a flowchart of a conventional general teaching operation. A general teaching operation will be described with reference to FIG. The machining axis feed key arranged on the teaching box 7 is pressed, and each axis is moved to the first teaching point which is the teaching position (step ST1).
13), teach the first teaching point (step ST11)
4). Then, move each axis to the next teaching point (step ST
115), teach the next teaching point (step ST11)
6). The key for returning one block is pressed a required number of times to move the processing machine, specifically the processing head 3, to the previous teaching point (step ST117). The key for moving forward by one block is pressed a required number of times to move the processing head 3 to the next teaching point (step ST118). It is determined whether there is no problem in the trajectory between the teaching points by the operation of the processing head 3 in steps ST117 and ST118 (step ST119). If it is determined in step ST119 that there is a problem in the trajectory, the processing head 3 is stopped and the teaching point is corrected (step ST120). Steps ST115 to ST120 described above are repeated (step ST12).
1). When the teaching operation is completed in step ST121, all the teaching points are continuously moved to check the trajectories of all the teaching points (step ST122). In the operation of the processing head 3 in step ST122, it is determined whether there is a problem in the trajectory between the teaching points (step ST123). If it is determined that there is a problem in the trajectory, the processing machine is stopped to correct the teaching point. (Step ST124).

Here, in the description of the conventional example, moving the machining head 3 to the previous teaching point is referred to as a return operation as an explanation of the processing in step ST117. The process of pressing the key for returning the block by the required number of times is referred to as step return, and as a description of the process of step ST118, moving the machining head 3 to the next teaching point is referred to as a feed operation. The process of pressing the key that advances one line at a time the required number of times is referred to as stepping.

In this teaching work, actually, an NC program by the teaching work as shown in FIG. 8 is automatically created every time the work is advanced. In addition,
In the NC program shown in FIG. 8, the explanation of the instruction code is given on the right side of each line, but the explanation of this instruction code is not actually included in the NC program.

On the teaching box 7, a laser beam external shutter open key, a shutter close key, a processing start key, a processing end key, a speed setting key, a height control valid key, a height control invalid key, a program end key and a straight line There are keys such as interpolation movement key, circular interpolation movement key, and curve interpolation movement key. During teaching work for moving the machining head 3, the laser beam can be turned on or off at any position, and height control can be enabled. Teaching work such as turning on or off can also be performed. For example, when teaching while creating an NC program as shown in FIG. 8, a code M121 for turning off the laser beam at that position after teaching up to the portion of the curve interpolation movement command of sequence number N0011.
Is pressed to specify the machining end on the teaching box 7 to specify the processing end, and advance to the line of N0012 by further pressing the invalidity control key to specify M199. Furthermore, in order to teach by a linear movement to the next teaching position as indicated by N0014, the operation is to press the linear interpolation movement key after moving the machining head 3 to that position.

Further, the teaching box 7 may have a display panel for partially displaying the teaching position of the currently taught NC program, and the NC program can be confirmed by operating only the keys in the teaching box 7. The teaching operation shown in FIG. 7 can be performed while doing so.

[0011]

An NC as shown in FIG.
In the teaching work while creating and confirming a program, for example, from the teaching position shown in the row of N0014, 1
As an operation for returning the machining head 3 to the previous teaching position, that is, an operation for performing the step return operation of step ST117 shown in FIG. 7, a row of the sequence number N0014 is displayed on the display panel on the teaching box 7. In this state, it is necessary to press the step return key on the teaching box 7. However, here, if this step return key is pressed only once, only the state of the process is changed to the line of the number N0013.
Movement of the processing head 3 in the row of N0013, specifically,
Since there is no instruction regarding what position and on what locus to move, the processing head 3 does not move. Even if you press it again, the number N
Only the state changes to row 0012, and the processing head 3
In order to return from the position designated by N0014 to the previous position, the step return key must be depressed three times to return to the state indicated by the row of N0011 in which the instruction on the movement of the processing head 3 is given.

The same applies to the case where the processing head 3 is returned from the position indicated by N005 to the position indicated by N0002, and the case where the processing head 3 is returned from the position indicated by N0017 to the position indicated by N0014. Conversely, in the state where the teaching has already been performed up to the line indicated by N0014,
From the position indicated by 0011, N0014
The same is true when confirming the operation of sending to the position indicated by. That is, there are a case where the processing head 3 (processing machine) moves by pressing the step feed key and the step return key once, and a case where the processing head 3 (processing machine) does not move unless it is pressed a plurality of times, that is, twice or more. For example, in the example of FIG. 8, there are only two lines N0003 and N0004 between the position indicated by N0002 and the line indicating the next position N0005.
In some cases, characters or comments indicating various parameters may be included in the NC program. In such a case, many lines such as four or five lines are included before the line indicating the next position. However, there is a problem that the step return key and the step forward key must be pressed a large number of times.

In the teaching work, the machining head 3 may be moved while confirming the NC program displayed on the teaching box 7 at hand. However, the machining head 3 and the workpiece do not interfere with each other. In some cases, step-forwarding and step-back operations may be performed without paying attention to the machining head 3 and paying attention to the teaching box 7, so that the user only needs to press the step-forward or step-back button once. There is a problem that it is difficult to handle the case where the operation is performed and the case where the operation is not performed unless the button is pressed several times is mixed. For operations such as skipping a specific part of the NC program and processing it, see, for example, JP-A-57-69312 and
Japanese Patent Laid-Open No. -219303 and the like disclose an optional block skip function. However, in the case of the optional block skip function disclosed in these publications, the user originally has to use a unique symbol for determining which part is to be skipped in the NC program used for processing in advance. NC required for processing
It had to be added separately to the program, and the work for that was complicated and took a lot of time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has been achieved without performing a complicated operation such as separately adding a special symbol in an individual NC program.
A processing apparatus capable of skipping the C program and moving the processing head portion from the current teaching position to the front and rear teaching positions indicated by the NC program with only one operation.

[0015]

According to the present invention, there is provided a processing apparatus comprising: a processing head portion to be taught; and a second teaching device which moves the processing head portion from a first teaching position to a position different from the first teaching position. A movement command input unit for inputting a movement command for moving to a position,
In response to one movement command input from the movement command input unit, a second program line corresponding to the second teaching position is obtained from a first program line corresponding to the first teaching position in the NC program. A skip processing control unit that performs a skip process up to a program line, and a processing head unit driving unit that moves the processing head unit based on the instruction content of the second program line, wherein the skip processing control unit includes: The determination operation of determining whether the instruction content of each program line is the instruction content relating to the teaching position is sequentially repeated from the line next to the first program line, and the instruction content of the determination target program line is determined by the instruction content relating to the teaching position. When it is determined that there is, it is determined that the second program line has been detected, and is output to the processing head unit driving means.

Further, there is provided a skip function selecting means for switching the function of the skip processing between valid and invalid.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 A three-dimensional laser processing machine as an example of a processing apparatus according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a flowchart showing processing by the processing apparatus according to the first embodiment of the present invention. For example, the processing head 3 is set to N
When it is attempted to move to the next teaching position in the C program, the processing step ST in FIG.
In step 1, the instruction content of the line following the line currently being processed in the NC program is read, and in a processing step ST2, the instruction content of the read line is a command to end line feed processing in the NC program. For example, it is determined whether or not the line is the last line of the entire NC program or the case where the instruction content of the line is an instruction to end machining. 1 if the command content is a command to end line feed processing
The batch feed process is completed, and if it is not a command to be finished, it is determined in step ST3 whether or not the command content of the line relates to the movement of the machining head 3. If the command is not a command related to movement, the process returns to processing step ST1. If the command is a command related to movement, the process proceeds to processing step ST4, where one skip operation, that is, a process of moving the machining head 3 to the next teaching position is executed. FIG. 1B also shows the case where the return operation to the immediately preceding teaching position is performed.
As shown in FIG.

In this embodiment, skip means
If it is determined that the command content of the read program line is not a command related to movement, the command content of that line is not executed, and the process proceeds to the reading / determination processing of the next line or the previous line. A process of omitting the execution of the instruction content of the program line during the process until the program line having the program line is reached, that is, a process of so-called “skip” of the program line is shown. However, as a result, if the command content of the line immediately adjacent to the program line currently being processed is a command relating to movement, there is no program line to be omitted and 2
The processing is performed in a row-continuous manner. Needless to say, the processing in this case is also included in the concept of skip.

FIG. 2 is a block diagram showing a schematic configuration of the three-dimensional laser beam machine according to the first embodiment of the present invention. In this embodiment, the teaching box 7 has a step forward button 71 and a step return button 72. This step forward button 7
By pressing 1 once, a signal for instructing skip feed to the line having the instruction content for the next movement is output. Similarly, pressing the step return button 72 once outputs a signal instructing a skip return to the line having the instruction content relating to the immediately preceding movement. That is,
In this embodiment, the step forward and the step backward indicate skipping to the line having the instruction content regarding the movement.

The NC control unit 8 determines the contents of the command of the next line or the previous line to determine whether or not to terminate the line feed or line return process. There is a movement command judging section 81 for judging whether or not the content is a command relating to movement. If it is determined that the line feed or line return should not be terminated and the command content of the line is not a command relating to movement, the next step is performed. It also has a block skip processing unit 82 for sending to the next row or returning to the previous row.

Embodiment 2 FIG. A three-dimensional laser beam machine according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the second embodiment of the present invention. In the second embodiment,
Unlike the first embodiment described above, when the operation of the step forward button 71 and the step return button 72 is performed in the teaching box 7, the lines between the lines having the instruction contents regarding the movement are skipped. There is a skip function cancel button 73 for the user to select whether to enable or disable the function to be processed.
When the skip function is set to be invalid by the skip function cancel button 73 and the above-described step forward button 71 or step return button 72 is pressed,
When the button is pressed once, the program line next to the current program line is read, similarly to the conventional one. Thereafter, each time the button is pressed, the program line is read one by one sequentially.

Here, as a specific example of the processing for determining whether or not to move in step ST3, for example, "G8.1", "G8.2", or "G8" used in FIG. .3 "is determined to be a line having the content of a command for movement, and all lines not including these codes are skipped. That is, in this case, N0012, N0013, N0015, N001 in FIG.
Rows such as 6 will be skipped.

As described above, in the embodiment according to the present invention, the criterion for determining whether or not to skip is once set in the movement command determining unit 81 using the code used in the general-purpose NC program as the criterion. It is not necessary to perform the editing work relating to the skip for each individual machining NC program.

The criterion for determining whether or not the command is for moving the processing head 3 in the movement command determination unit 81 in FIG. 2 is fixed and registered in advance by the manufacturer of the laser processing machine. Or a function that allows the user to freely change the settings. Further, in the above description, the NC program is stored in the NC control unit 8, and the NC control unit 8 makes all determinations regarding the signal of the step feed process or the step return process from the teaching box 7 side. However, this processing may be performed in the teaching box 7. FIG. 3 shows an example in which the skip enable / disable setting button is provided in the teaching box 7.
It may be provided in both the control unit 8 and the teaching box 7. Further, in FIG. 2 and FIG.
Although the block skip processing unit 82 is provided in the NC control unit 8, these units may be provided in the teaching box 7.

In the above description, as an embodiment of the present invention, a three-dimensional laser beam machine has been described as an example. However, other devices such as a two-dimensional laser beam machine or a robot can be applied, and the same effects can be obtained. . Further, although an example in which the teaching box 7 has an NC program display function has been described, the present invention can also be applied to an apparatus having no corresponding function. Furthermore, if you instruct step forward or step backward,
There is also a possibility that the command content of the skipped program line is exactly the same as the command at the current position, and there is substantially no movement or rotation of the machining head 3 at all. Whether to judge whether to judge or not to skip is also possible to extend the function such that a separate agreement can be made in advance.

[0026]

As described above, according to the present invention, when the skip operation of the program line is performed at the time of teaching, the skip processing control unit determines the original instruction content itself of each line in the NC program. In addition, since it is determined whether or not the line has a command content related to the movement of the processing head unit, even if a skip operation is required, a special symbol for executing the skip operation is included in an individual NC program. It is possible to skip the NC program without performing a complicated operation such as adding the NC program separately. This has an effect that the NC program can be created and the efficiency of the confirmation operation at the time of teaching can be improved.

Further, by providing a function of selecting whether to enable or disable a function of skipping processing to a line having a command content related to movement, a check other than a check relating to a teaching position and movement thereof is performed. Therefore, it is also possible to sequentially feed and return lines from the current program line, and it is possible to respond to checking of the NC program from various viewpoints.

[Brief description of the drawings]

FIG. 1 is a flowchart showing processing by a three-dimensional laser beam machine according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a three-dimensional laser beam machine according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of a three-dimensional laser beam machine according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a conventional general three-dimensional laser beam machine system.

FIG. 5 is a block diagram showing a schematic configuration of a conventional general three-dimensional laser beam machine.

FIG. 6 is a flowchart from the creation of a conventional general machining program to the actual machining.

FIG. 7 is a flowchart of a conventional general teaching operation.

FIG. 8 is an example of an NC program generated by a teaching operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing machine main body 3 Processing head 7 Teaching box 8 NC control part 71 Step feed button 72 Step return button 73 Skip function cancel button 81 Move command judgment part 82 Block skip processing part

Claims (2)

[Claims] 1. A processing head portion to be taught,
A movement command input unit for inputting a movement command for moving the machining head from the first teaching position to a second teaching position different from the first teaching position; Skip processing for receiving an input of a single movement command and skipping from a first program line corresponding to the first teaching position to a second program line corresponding to the second teaching position in the NC program A control unit, comprising a processing head unit driving unit that moves the processing head unit based on the instruction content of the second program line, wherein the skip processing control unit is located next to the first program line. The determination operation of determining whether or not the instruction content of each program line is the instruction content relating to the teaching position is sequentially repeated from the line. When it is determined that the command content of the program line is a command content related to the teaching position, it is determined that the second program line has been detected, and the command is output to the processing head unit driving means. apparatus. 2. The processing apparatus according to claim 1, further comprising a skip function selecting unit that switches between a validity and a invalidity of a skip processing function.