JP4151402B2 - Numerical controller with parameter rewriting history function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a numerical control device with a parameter rewriting history function that numerically controls various control target devices, such as machine tools and loaders thereof, using various set parameters.
[0002]
[Prior art]
The numerical control device has a mechanism for enabling / disabling each function and selecting an operation method according to parameters. That is, recently, numerical control software has become complicated due to diversification of user requests, and it is generally performed to correspond to the requests of each user by parameters. For example, if the selection of the material carry-in direction in an automatic machine tool equipped with a loader, the selection of whether or not to perform in-machine measurement during machining, the spindle rotation speed, etc. are set by parameters, the creation and control of the NC program is simplified. Many of such parameters are often used, for example, tens or hundreds.
This parameter is of a nature that should not be changed without some specialized knowledge. If incorrect parameters are set, the machine will behave unexpectedly.
Previously, anyone could change it, so if it wasn't a parameter with the right value, you don't remember making such a change after shipment, who changed it at what time, It was not known who changed when and so on, and there was a problem after checking many parameters. Many causes are when an unintended change is made, or when a setting is made to avoid a problem that is imminent in front of the user, and the user forgets to restore it.
The present inventor previously proposed a numerical control device having a function of notifying the fact of rewriting such parameters (Patent Document 1).
[0003]
[Patent Document 1]
JP 2002-312007 A [0004]
[Problems to be solved by the invention]
However, a dedicated storage means is necessary, and since the contents of such parameter change history are not normally viewed, the usability is not sufficient for operation.
[0005]
An object of the present invention is to provide a numerical controller with a parameter rewriting history function that can leave parameter rewriting history information without using a special storage means.
Another object of the present invention is to make it possible to view the rewrite history information without providing a dedicated reading means.
Still another object of the present invention is to make it easy for a person to read the rewrite history information from a program storing the rewrite history information.
[0006]
[Means for Solving the Problems]
The configuration of the present invention will be described with reference to FIG. 1 corresponding to the embodiment. This numerical control device with a parameter rewriting history function is a numerical control device (1) for controlling the operation of the control target device (2) using various parameters, and controls the operation of the control target device (2). NC program storage means (7) for storing an NC program (4) for rewriting, parameter storage means (6) for storing each of the above parameters in a rewritable manner, and rewriting the parameters stored in the parameter storage means (6) Parameter rewriting means (9), and rewriting history information management means for storing rewriting history information (A) in the NC program storage means (7) when parameters stored in the parameter storage means (6) are rewritten. 10).
According to this configuration, when the parameter is rewritten by the parameter rewriting means (10), the rewriting history information management means (10) stores the rewriting history information (A). In this case, the rewrite history information (A) is stored in the NC program storage means (6). Since the history of parameter rewriting is left in this way, it is possible to easily cope with inadvertent settings and forgetting to return settings. Further, since the NC program storage means (7) is used, the parameter rewriting history information (A) can be left without using any special storage means. Therefore, operations such as management and reading of the rewrite history information (A) are convenient.
[0007]
The rewrite history information management means (10) creates the description contents in a dedicated program (11) that is created in the same program format as the NC program (4) and does not include a command to actually operate the control target device (2). It shall sequentially recording the rewriting history information (a) as added. Further, there is provided means (18) for displaying the NC program (4) stored in the NC program storage means (7) and the dedicated program (11) on the screen of the display means (9). This means (8) can display, for example, the NC program (4) stored in the NC program storage means (7) on the screen of the display means (9) and can be rewritten by the input from the input means (8). Program maintenance means (18).
When the rewrite history information (A) is recorded as the description content of the dedicated program (11) created in the same program format as the NC program (4) in this way, the NC program (4) is operated for the maintenance and operation of the NC program (4). The rewriting history information (A) can be viewed using the screen of the operation panel (3) that displays 4) on the screen. Therefore, the rewrite history information (A) can be viewed without providing a dedicated reading means. Further, the dedicated program (11) containing the rewrite history information (A) can be edited in the same manner as other NC programs (4), and the handling is excellent. The dedicated program (11) takes the form of the NC program (4), but does not include a command to actually operate the control target device (2), and therefore the control target device (2) may be erroneously operated by its execution. There is no.
[0008]
In the present invention, the rewrite history information management means (10) uses the rewrite history information (A) as a comment for not operating the control target device (2) in the program created by the dedicated program (11). It shall be recorded as the description contents of the area. For example, the rewrite history information (A) may be recorded as a comment of description in the NC program language.
The comment area is not an actual control command, but is an area that can be written by being separated by a predetermined symbol or the like in order to make the program contents easy to see. Therefore, by writing the rewrite history information (A) in this comment area, it becomes easy for a person to read the rewrite history information (A).
Further, when the change history information management means (10) has a predetermined input from the input means, a check mark giving means (10a) for giving a check mark (B) as the description content of the dedicated program (11). It may be provided. If provided with the check mark providing means (10a), can see the incorrect parameter changes milestone and pre-shipment steps, Ru is prevented to be shipped in the state of the parameter setting failure.
The parameter rewriting means (9) has a rewrite permission means (9a) that enables rewriting of parameters only when a predetermined determination is made and a rewrite permission state is established. It is determined whether an item has been input from the input means (8) and whether the input content matches a predetermined requirement, and the predetermined input item includes the identification number of the parameter rewriting operator. .
The rewrite history information management means (10) stores, as the rewrite history information (A), the identification number of the parameter rewrite operator, the date of rewriting, the parameter address and the changed value .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. The numerical control device 1 with a parameter rewriting history function is a device that controls the operation of the control target device 2 using the NC program 4 and various parameters. The control target device 2 is a machine tool or other various devices. Machine tools include machine tools in a broad sense such as a punch press and a laser processing machine in addition to machine tools in a narrow sense such as for cutting and grinding, which are represented by a lathe. As shown in FIG. 7, the control target device 2 includes a machine tool main body 2a that processes an object and a loader 2b that loads and unloads workpieces from the machine tool main body 2a. . Even if the control target device 2 of the numerical control device 1 controls the whole machine tool having such a loader 2b with the same program, either the machine tool main body 2a or the loader 2b is controlled by an individual NC program. Numerical control may be performed by For example, you may apply when the control object apparatus 2 is the loader 2b single.
[0010]
In FIG. 1, a numerical control device 1 is of a computer type and has an arithmetic control unit 5 that decodes and executes an NC program 4 that is a numerical control program. The arithmetic control unit 5 uses various parameters stored in the parameter storage unit 6 when the NC program 4 is executed. One or a plurality of NC programs 4 are stored in NC program storage means 7 provided in the numerical controller 1. A plurality of stored NC programs 4 are prepared separately depending on the types of material workpieces and product workpieces to be processed by the control target apparatus 2, and are input by a host control computer (not shown) for schedule management or operator input. To select and execute.
[0011]
The numerical control device 1 performs a numerical control function and a sequence control function, and includes a numerical control unit that performs the numerical control function and a programmable controller unit that mainly performs sequence control (not shown). ) Or may be provided without being divided. In FIG. 1, the numerical control unit and the programmable controller unit are shown together. The arithmetic control unit 5 is means for performing decoding of the NC program 4 and axis feed control and sequence control of each axis of the control target device 2 based on the decoding result. When the programmable controller unit is provided, the programmable control unit 5 is programmable. This includes the control means in the controller section. The sequence control is performed according to a predetermined sequence program (not shown), for example.
[0012]
In the numerical control device 1, the numerical control unit and the programmable controller unit may be configured as separate computers or may be configured as a common computer, regardless of the distinction between them. It may be composed of a plurality of computers connected by a network.
The operation panel unit 3 is a unit for operating each unit of the numerical control device 1 and the control target device 2, and includes an input unit 8 such as a keyboard and a touch panel, and a display unit such as a liquid crystal display device and a CRT that perform screen display. 9.
[0013]
The parameter storage means 6 is a means for storing various parameters used for control, and the parameter contents, that is, values are stored in a storage area specified by an address. The number of parameters in the parameter storage means 6 is, for example, several tens to several hundreds. As the content of the parameter, data indicating the type of control, data indicating the control amount, an identification code assigned to distinguish the position, and the like are set. As data for selecting the type of control, there are, for example, a binary code indicating whether the workpiece is loaded from the right or the left, a code identifying whether or not a predetermined process such as in-machine measurement is performed, and the like. Determined. As the data indicating the control amount, an override value for the spindle rotation speed, the workpiece conveyance speed, or the like is set. As the information for distinguishing the position, a code or the like for distinguishing each stop position in the work transport path by the loader 2b (FIG. 7) is set. If parameters are classified from a different viewpoint, there are functional parameters that define basic functions, optional parameters that are set at the factory, operational parameters that are set by the user according to the operation, and the like. The parameter storage means 6 may be provided separately for the numerical control section and the programmable controller section, and both are shown together in FIG.
[0014]
The numerical control apparatus 1 is provided with a program maintenance means 18 , a parameter rewriting means 9, and a rewriting history information management means 10 in the above configuration.
The program maintenance means 18 is a means for displaying the NC program 4 stored in the NC program storage means 7 on the screen of the display means 9 and enabling editing, that is, rewriting by input from the input means 8. In addition to this, the program maintenance means 18 may have an external output function of the NC program 4 and an external input function.
The parameter rewriting means 9 is means for rewriting the parameters stored in the parameter storage means. The parameter rewriting means 9 has a rewriting permission means 9a, and enables parameter rewriting only when a predetermined determination is made and a rewriting permission state is established. As the predetermined determination, for example, it is determined whether a predetermined input item has been input from the input unit 8 and whether the input content matches a predetermined requirement. This predetermined input item includes the identification number of the parameter rewriting operator. The parameter rewriting means 9 includes, for example, an input processing means (not shown) for inputting the identification number of the parameter rewriting operator, and a rewriting permission means 9a for permitting parameter rewriting on condition that the identification number is input. It is good as a thing.
[0015]
The rewrite history information management means 10 is means for storing in the NC program storage means 7 the rewrite history information when the parameters stored in the parameter storage means 6 are rewritten by the parameter rewrite means 9. In this case, the rewrite history information management means 10 adds the program rewrite history information as an addition to the dedicated program 11 that is created in the same program format as the NC program 4 and does not include a command to actually operate the control target device 2. Are recorded sequentially. The rewrite history information is recorded as the contents of the comment area of the dedicated program 11. The dedicated program 11 may store the basic contents described in advance in the NC program storage means 7, and generates the basic contents of the dedicated program 11 at the first storage by the rewrite history information management means 10. The program may be stored in the NC program storage unit 7.
[0016]
The rewrite history information management means 10 may be provided with a check mark giving means 10a. This check mark giving means 10a is a means for giving a check mark as the description content of the dedicated program 11 when there is a predetermined input from the input means 8 at a predetermined opportunity. This check mark is also recorded in the comment area. The check mark is a mark that is given to indicate confirmation when the content of each parameter in the parameter storage unit 6 is confirmed to be correct, for example, at the predetermined opportunity.
[0017]
The NC program 4 is described in NC code, for example, and basically one instruction is described in one line. There are various types of program formats of the NC program 4 such as NC codes, which can be finely classified. The dedicated program 11 can be displayed and rewritten at least by the program maintenance means 18 in the same manner as the NC program 4. It is supposed to be.
For example, the NC program storage means 7 may be one in which a plurality of areas each storing one NC program 4 are determined in advance. In that case, any one or a plurality of NC program storage areas in the NC program storage means 7 may be defined as a fixed area for storing the dedicated program 11.
[0018]
The rewriting of parameters and the recording of the history of the above configuration will be described with reference to the flowchart of FIG. 4 and examples of each screen. As shown in step S1 in FIG. 4, when changing a parameter, a predetermined input indicating that the parameter is desired is input to the input means 8. By this input, the parameter rewriting means 9 outputs a condition setting screen as shown in FIG. 5, for example, to the display means 9 (S2). This condition setting screen is an input screen for authority confirmation information, and the parameter rewriting operator identification number is input to a predetermined location on the screen (a location where a plurality of “*” characters are arranged in the figure). For example, as shown in FIG. 6, this identification number is an employee number if it is an employee, or a number in which the highest digit is fixed to a predetermined letter or number (“6” in the figure) if it is a subcontractor. . The table in FIG. 6 appears on the screen by touching a mark “see HELP” in FIG. 5 with a finger.
The parameter rewriting means 9 confirms that the identification number has been input and enters a rewritable state. As a result, the parameter rewriting means 9 outputs a parameter change screen (not shown) to the screen of the display means 13, or the parameter display section (not shown) in the condition setting screen of FIG. S3). Note that the input confirmation of the identification number only authenticates whether it is a code of a predetermined digit, for example. The fact that rewriting is possible is notified to the operator by changing the display of “PWE” to 1, for example, on the condition setting screen.
[0019]
On the parameter change screen (not shown), a parameter to be rewritten is called by selecting an address or a parameter name attached to the parameter, and the contents of the parameter are displayed together with the address or the parameter name (S4). ). A new parameter value is input on this screen (S5). The input parameter value is displayed in the parameter content display area on the screen.
Thereafter, a rewrite command is input (S6). The rewrite command is issued by touching a predetermined location indicated on the parameter change screen with a finger.
[0020]
When this rewriting command is input, the parameter rewriting means 9 rewrites the value of the corresponding parameter in the parameter storage means 6 to a new value (S7). The rewrite history information management means 10 records the rewrite history information A in the comment area of the dedicated program 11.
[0021]
The dedicated program 11 has, for example, the format shown in FIG. 3, and one line of content is added every time the parameter is rewritten.
The number “09999” in the first row in the figure indicates an address in the NC program storage means 7.
In this embodiment, as the rewriting history information A, the rewriting operator identification number (for example, employee code), the date of rewriting, the parameter address, and the changed value are recorded.
In the second example of the text, “87055 2002/10/25 K123 29” in the second line, “87055” is the rewrite operator's identification number, and “2002/10/25” is the rewrite. “K123” indicates the parameter address, and “2” indicates the value after the parameter change.
The parentheses at both ends of the character string are symbols indicating the comment area. As the grammar in the program format of the NC program 4 in this embodiment, the characters “(” at the front end and the characters “)” at the rear end The range surrounded by is defined as the comment area.
In this way, each time the parameter is rewritten, the rewrite history information A is sequentially added to the dedicated program 11 as a one-line character string surrounded by parentheses at both ends.
[0022]
Further, in this embodiment, the rewrite history information management means 10 causes the dedicated program 11 to enter a check mark at every predetermined node by the check mark giving means 10a.
For example, in the stage until the numerical control device 1 is manufactured and shipped, the operator is asked to confirm the parameter change history so far before a predetermined process. Here, when it is confirmed that the parameters are correct, the operator presses a process completion button (not shown). As a result, a check mark B is given to the dedicated program 11. The check mark B is expressed by, for example, an auxiliary function code (M code), a checker identification number in the comment area, a date, and a character indicating the meaning of the check. The first check mark B is indicated by a character string “M00 (88099 2002/10/25 CHECK)” in FIG.
In addition, a check mark is given by performing a check after completion of the predetermined process and before shipment.
[0023]
According to the numerical control device 1 having this configuration, since the rewrite history information A is recorded in this way, it is possible to easily cope with inadvertent settings, forgetting to return settings, and the like. The rewrite history information A is recorded as an NC program in the form of a comment and stored in the NC program storage means 7 without providing a special recording area, so that no special storage means is required. The following advantages can be obtained.
(1) . Editing of the recorded rewrite history information A can be performed in the same manner as editing of the NC program 4.
(2) . The rewrite history information A can be output to the outside.
(3) . Anyone can edit it.
This editing and output is performed by the program maintenance means 18 . Since it is handled in the same way as the NC program 4, it will be deleted if it is formatted or all cleared.
[0024]
Further, by providing the check mark providing means 10a, it is possible to confirm an illegal parameter change before a process milestone or before shipping, and it is possible to prevent shipping in a parameter setting failure state.
[0025]
【The invention's effect】
A numerical controller with a parameter rewriting history function according to the present invention includes a parameter rewriting unit for rewriting a parameter stored in a parameter storage unit, and NC program storage for rewriting history information when the parameter stored in the parameter storage unit is rewritten. Since the rewriting history information management means stored in the means is provided, the parameter rewriting history information can be left without using any special storage means.
The rewriting history information management means dedicated program created in the same program format as the NC program, because as additional content described in which sequentially recording the rewriting history information, without providing a dedicated read device, The rewriting history information can be viewed by using a means for displaying the NC program.
Furthermore, the rewritten to historical information, because we shall be recorded as a description content of the comment area that does not actual operating the control target device in a program created in the same program format as the NC program from the program storing the rewriting history information The rewrite history information can be easily read by a person.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a conceptual configuration of a numerical controller with a parameter rewriting history function according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing the relationship between the NC program, dedicated program, and NC program storage means;
FIG. 3 is an explanatory diagram of a content example of a dedicated program.
FIG. 4 is a flowchart showing a process of parameter rewriting and rewriting history information recording.
FIG. 5 is an explanatory diagram of an example of an input screen for confirming the authority to rewrite parameters.
FIG. 6 is an explanatory diagram of an example of a format for assigning an identification number of a writing worker.
FIG. 7 is a front view of a specific example of an apparatus to be controlled.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Numerical control apparatus 2 ... Control object apparatus 3 ... Control panel part 4 ... NC program 6 ... Parameter storage means 7 ... NC program storage means 8 ... Input means 9 ... Parameter rewriting means 9a ... Rewriting permission means 10 ... Rewriting history information management Means 10a ... Check mark giving means 11 ... Dedicated program 13 ... Display means A ... Rewrite history information B ... Check mark

Claims (3)

A numerical control device for controlling the operation of the control target device using various parameters, and an NC program storage means for storing an NC program for controlling the operation of the control target device, and the parameters can be rewritten. Parameter storage means for storing, parameter rewriting means for rewriting parameters stored in the parameter storage means, and rewriting history information when the parameters stored in the parameter storage means are rewritten are stored in the NC program storage means Rewriting history information management means, wherein the rewriting history information management means is added as a description content to a dedicated program that is created in the same program format as the NC program and does not include an instruction to actually operate the device to be controlled. Rewrite history information shall be recorded sequentially, and the above rewrite history information The means records the rewrite history information as a description content of a comment area that does not actually operate the device to be controlled in the dedicated program, and displays the NC program and the dedicated program stored in the NC program storage means. only setting means to be displayed on the screen, the parameter rewriting means, only when a rewrite permission state by performing a predetermined determination has rewriting permission means for enabling the rewriting of the parameters, as the predetermined decision It is determined whether a predetermined input item has been input from the input means, and whether the input content matches a predetermined requirement, and the predetermined input item includes the identification number of the parameter rewriting operator The rewrite history information management means uses the parameter rewrite operator identification number and the rewrite history information as the rewrite history information. And date have made, parameter rewriting history function numerical controller for storing a value after the address and parameter changes.   A program for causing the NC program and the dedicated program to be displayed on the screen of the display means so that the NC program stored in the NC program storage means is displayed on the screen of the display means and can be rewritten by input from the input means. 2. The numerical controller with a parameter rewriting history function according to claim 1, which is a maintenance means.   3. The parameter rewriting history according to claim 1 or 2, further comprising a check mark giving means for giving a check mark as a description content of the dedicated program when the rewriting history information management means has a predetermined input from the input means. A numerical controller with functions.

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