JP4494303B2 - Numerical controller - Google Patents

Description

  The present invention relates to a numerical control apparatus that performs control processing based on a program described by control command codes.

  In a processing apparatus that performs processing of a workpiece, complicated processing is required. For this reason, the control processing of the processing device performed by the numerical control device is also complicated. When the processing apparatus performs processing based on a plurality of setting conditions, the control program is also complicated. For example, when processing by one setting (processing by a predetermined tool or the like) is finished and processing processing by the next setting is started, it is desirable to set the processing device to an initial state with a simple program.

  The conventional numerical control device is configured to set a modal G code as a parameter when the power is turned on or reset, and is operated in a modal state that matches the machine tool (processing device) when the power is turned on or reset. (For example, refer to Patent Document 1). Also, there is a numerical control device that saves and restores modal G code during program execution when the modal G code is changed in a macro program (see, for example, Patent Document 2).

JP-A-4-148304 Japanese Utility Model Publication No. 3-86407

  However, in the former conventional technique, it is necessary to instruct the numerical controller to issue a G code for canceling the commanded information, such as switching between an absolute value command and an increment value command of the tool offset, at the end of machining with one tool. is there. At this time, since it may be necessary to specify a plurality of G codes in the machining program, there is a problem that the creation of the machining program becomes complicated. In addition, there is a problem that it takes a long time to debug the machining program if, for example, the G code for canceling the modal G code is forgotten when the machining program is created.

  In the latter conventional technique, the state of the numerical control device can be restored to the state of the saved modal G code, but the numerical control device is to be initialized to another state different from the saved state. There was a problem that the modal could not be changed.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a numerical control device that can set a command state of modal data to an initial state by one control command code.

To solve the above problems and achieve the object, the present invention is based on the program described in each block in the control command code, the numerical controller for controlling each block a predetermined device, G code group A storage unit for storing a plurality of command information for initializing separately defined modal data, and initialization identification information for identifying a set of information composed of the plurality of command information; and the program for each block The analysis unit for determining whether or not initialization identification information corresponding to the initialization identification information stored in the storage unit is included in the extracted block, and the analysis unit from the extracted block When the initialization identification information corresponding to the initialization identification information is determined, based on the plurality of command information corresponding to the initialization identification information, for each G code group And an initialization processing unit that initializes the defined modal data.

According to this invention, the modal data defined for each G code group can be collectively changed to the state at the time of starting the program based on the command information corresponding to the initialization identification information set in advance. There is an effect that the creation becomes easy.

  Embodiments of a numerical controller according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment First, the concept of a numerical controller according to the present embodiment will be described. FIG. 1 is an explanatory diagram for explaining the concept of the numerical controller according to the embodiment. In the present embodiment, as an example of an apparatus controlled by the numerical control apparatus 100, a processing apparatus (machine tool) in which the numerical control apparatus 100 performs processing of a workpiece with a plurality of tools, a plurality of processing conditions, and the like. ) Will be described. The numerical control device 100 controls the relative position (rotation and movement of the tool) of the tool and the workpiece, for example, by giving coordinate data as control of the processing device.

  The numerical control device 100 is canceled (initialized) by a cancel G code 31 and a cancel G code 31 for canceling a modal G code (a modal G code 50 described later) such as a machining condition set in the numerical control device 100. The setting state of the modal G code 50 (hereinafter referred to as modal G code setting information 32) is input in advance and stored in the nonvolatile memory 140 (corresponding to the setting information storage unit 14 described later) (1, 2).

  When a processing apparatus (not shown) processes a workpiece, a processing program (control command code) 33 is input to the numerical controller 100 (3). Then, the processing content for each block of the input machining program 33 is interpreted to extract the data for each block, and when the processing for each block is completed, the data for each block (hereinafter referred to as 1 block data 34). Is stored in the volatile memory 170 (corresponding to an initialization information storage unit 17 described later). Next, it is determined whether the one block data 34 stored in the volatile memory 170 is the same G code as the cancel G code 31 set in the nonvolatile memory 140 (4).

  When one block data 34 is information corresponding to the cancel G code 31 (the same G code as the cancel G code 31), the setting of the modal G code 50 is set based on the modal G code setting information (command information) 32. It is changed (initialized) and stored in the volatile memory 170 (5). Thereafter, the processing device connected to the numerical control device 100 performs processing of the workpiece based on the modal G code 50, coordinate data instructed by the NC program, and the like.

  Next, the configuration of the numerical controller according to the present embodiment will be described. FIG. 2 is a block diagram illustrating a configuration of the numerical control device according to the embodiment. The numerical control device 100 is a device (computer or the like) that controls the processing device based on control command codes such as G code, M code, and T code, and includes a setting information input unit 11, a program input unit 12, and storage control. Section 13, setting information storage section 14, analysis section 15, initialization processing section 16, and initialization information storage section 17. The setting information storage unit 14 here corresponds to the storage unit described in the claims.

  The setting information input unit 11 includes information input means such as a mouse and a keyboard, and a cancel G code (initialization identification information) for canceling a modal G code 50 such as a machining condition set in the numerical control device 100. 31) The setting state (modal G code setting information 32) of the modal G code 50 canceled (initialized) by the cancel G code 31 is input. The program input unit 12 inputs a machining program 33 used when the machining apparatus processes a workpiece.

  The storage control unit 13 causes the setting information storage unit 14 to store the cancel G code 31 and the modal G code setting information 32 input to the setting information input unit 11. The setting information storage unit 14 is configured by a nonvolatile memory or the like, and stores the cancel G code 31 and the modal G code setting information 32 input to the setting information input unit 11 based on the control of the storage control unit 13.

  The analysis unit 15 interprets the processing contents for each block of the machining program 33 input from the program input unit 12 and extracts data for each block. When the processing for each block is completed, the analysis unit 15 extracts the data for each block. Data (one block data 34) is stored in the initialization information storage unit 17. The analysis unit 15 determines whether the 1-block data 34 of the machining program 33 stored in the initialization information storage unit 17 is the same G code as the cancel G code 31 set in the setting information storage unit 14 in advance. to decide.

  When the analysis unit 15 reads the same G code as the cancel G code 31 set in the setting information storage unit 14 from the one block data 34, the initialization processing unit 16 reads the modal G code set in the setting information storage unit 14 Based on the setting information 32, the setting of the modal G code 50 (modal data) is changed (initialized). The initialization processing unit 16 stores the changed modal G code 50 in the initialization information storage unit 17.

  The initialization information storage unit 17 is configured by a volatile memory or the like, and stores the 1-block data 34 extracted by the analysis unit 15 and the modal G code 50 set and changed by the initialization processing unit 16.

  Next, an operation processing procedure of the numerical controller 100 will be described. FIG. 3 is a flowchart showing the processing procedure of the numerical controller. A cancel G code 31 and modal G code setting information 32 are set in advance in the numerical controller 100. Specifically, the cancel G code 31 and the modal G code setting information 32 are input from the setting information input unit 11, and the storage control unit 13 inputs the cancel G code 31 and the modal G code setting information 32 that are input to the setting information storage unit. 14 is stored.

  Here, the configuration and relationship between the cancel G code 31 and the modal G code setting information 32 will be described. FIG. 4 is a diagram illustrating an example of modal G code setting information. A predetermined G code is assigned to the cancel G code 31 in advance as a G code for canceling the modal G code 50. Here, a case where “G123” and “G456” are assigned as an example of the cancel G code 31 is shown.

  Further, modal G code setting information 32 is associated with each cancel G code 31. Each item of the modal G code setting information 32 is set to the modal G code 50 when the analysis unit 15 detects “G123” or “G456” from the one block data 34.

  For example, as the modal G code setting information 32 for initializing the modal G code 50 such as machining conditions for the cancel G code 31 of “G123”, “initial absolute value”, “initial G00”, “tool diameter” "Correction", "tool offset", "work coordinate system selection", etc. are associated with each other.

  Further, for the cancel G code 31 of “G456”, as the modal G code setting information 32, “initial absolute value”, “initial G00”, “tool radius correction”, “tool offset work coordinate system selection”, “high speed” “High precision” and the like are associated with each other.

  “Initial absolute value” indicates a position command method, and a coordinate command after the block is executed as an absolute value or incremental value command. Here, when “initial absolute value” is “0” (in the incremental mode), the current position is moved as a relative value by a value (incremental value) specified by the program. When the “initial absolute value” is “1” (in the absolute mode), the position is moved to the programmed position (absolute value) based on the preset coordinate system regardless of the current position.

  “Initial G00” indicates positioning, and positioning (cutting or rapid feed) is performed from the current point to the end point commanded by the coordinate word (X, Y, Z). Here, cutting is performed when “initial G00” is “0”, and fast-forwarding is performed when “initial G00” is “1”.

  “Tool radius compensation” indicates the compensation of the tool radius. When “Tool radius compensation” is “0”, the tool radius compensation is not changed, and when “Tool radius compensation” is “1”, the tool radius compensation is not changed. Cancel correction. “Tool offset” indicates whether or not to change the tool length. When “Tool offset” is “0”, the tool length is not changed, and when “Tool offset” is “1”. Cancel tool length.

  “Work coordinate system selection” indicates the selection of the work coordinate system. When “Work coordinate system selection” is “0”, the coordinates set in “G54” are selected, and “Work coordinate system selection” is “1”. In this case, the coordinates set by “G55” are selected, and when “work coordinate system selection” is “2”, the coordinates set by “G56” are selected.

  “High-speed and high-precision” indicates whether to set high-speed and high-precision processing. When “High-speed and high-precision” is “0”, high-speed and high-precision processing is canceled. When “0”, high-speed and high-precision processing is turned ON.

  Here, for the cancel G code 31 of “G123”, the “initial absolute value” mode is “1” (absolute value mode), “initial G00” is “1” (fast feed), and “tool radius correction” is set. “1” (cancel) and “tool offset workpiece coordinate system selection” are associated with “0” (G54).

  For the cancel G code 31 of “G456”, “initial absolute value” is “0” (increment value), “initial G00” is “0” (cutting), and “tool diameter correction” is “0” ( No change), “Tool offset workpiece coordinate system selection” is associated with “2” (G56), and “High speed and high accuracy” is associated with “0” (cancel).

  After the cancel G code 31 and the modal G code setting information 32 are stored in the setting information storage unit 14, the machining process by the machining program 33 is started. The analysis unit 15 determines whether or not the processing of one block in the machining program 33 is completed during the machining process by the machining program 33 by interpreting the processing content of each block (step S100). The analysis unit 15 determines whether or not the processing of one block has ended based on, for example, an EOB (End Of Block) code.

  When the analysis unit 15 determines that the processing of one block in the machining program 33 is not completed (processing of one block) (No in step S100), the analysis unit 15 performs processing of one block in the machining program 33. It will be in a standby state until it ends.

  On the other hand, when the analysis unit 15 determines that the processing of one block in the machining program 33 has been completed (step S100, Yes), the analysis unit 15 reads data for one block for which processing has been completed as one block data 34 (step S100). S110). The read one block data 34 is stored in the initialization information storage unit 17.

  Here, the configuration of the machining program 33 will be described. FIG. 5 is a diagram illustrating an example of the configuration of a machining program. The processing program 33 is identical to the cancel G code 31 registered in the setting information storage unit 14 (corresponding to the cancel G code 31 registered in the setting information storage unit 14) (“G123”, "G456"), G code for setting the axis movement and coordinate system, M code for rotating and stopping the tool, T code for changing the tool, EOB not shown, etc. correspond to the sequence number It is configured by attaching.

  The one block data 34 read by the analysis unit 15 is stored in the initialization information storage unit 17. The analysis unit 15 reads the same G code (“G123” or “G456”) as the cancel G code 31 stored in the setting information storage unit 14 from the one block data 34. In other words, the analysis unit 15 determines whether or not the G code command read from the one block data 34 matches the cancel G code 31 (step S120).

  If the analysis unit 15 determines that the G code command read from the 1-block data 34 and the cancel G code 31 do not match (No at Step S120), the analysis unit 15 returns to the process at Step S100, It is determined whether or not the processing for one block has been completed.

  On the other hand, when the analysis unit 15 determines that the G code command read from the one block data 34 matches the cancel G code 31 (Yes in step S120), the initialization processing unit 16 reads the G code command read from the one block data 34. Is coincident with the cancel G code 31.

  For example, in the case of the machining program 33 shown in FIG. 5, when the analysis unit 15 reads “G123”, which is a block having a sequence number N500, the analysis unit 15 determines that the G code command read from one block data 34 is the cancel G code 31. It is determined that they match.

  The initialization processing unit 16 sets the modal G code setting information 32 (“initial absolute value”, “initial G00”, etc.) corresponding to the cancel G code 31 that matches the G code command read from the one block data 34 as the setting information. Extracted from the storage unit 14.

  Then, the initialization processing unit 16 reads the number of changes of setting items such as “initial absolute value” and “initial G00” in the modal G code setting information 32 as the modal change number (step S130).

  Next, the initialization processing unit 16 changes the state of the modal G code (modal G code 50). Specifically, the initialization processing unit 16 determines whether or not the number of modal changes that have not been processed (the state of the modal G code has not been changed) is 0 (whether or not all changes to the modal G code 50 have been completed). (Step S140).

  If the number of modal changes is not 0, the initialization processing unit 16 reads the unprocessed change contents from the modal G code setting information 32 (step S150), and changes the modal state (modal G code 50) (step S160). ).

  Based on the modal G code setting information 32, for example, the initialization processing unit 16 indicates the modal G code state, the position command method is the absolute value mode, the positioning is fast-forwarded, the tool radius correction is canceled, the tool offset is canceled, the “G54” Change to work coordinate system.

  Note that the modal G code here is a G code that is executed effectively once it is commanded until another G code is commanded next. That is, when the modal G code is set, the processing apparatus or the like processes the workpiece based on the modal G code set until the next G code is commanded, coordinate data commanded by the NC program, or the like. Perform processing.

  A plurality of cancel G codes 31 can be registered. As shown in FIG. 5, for example, when the sequence number N2700 is read by the analysis unit 15, the modal G code state is changed to a state of "G456". Is done. Thus, by calling the cancel G code 31 before and after each processing step composed of one to a plurality of blocks (between processing steps), a state in which the modal state is easily initialized can be created. Is possible.

  When the initialization processing unit 16 changes one item in the modal state, 1 is subtracted from the number of modal changes (step S170), and the initialization processing unit 16 changes the state of the next item in the modal G code.

  The initialization processing unit 16 repeats the processes of steps S140 to S170 until the number of unprocessed modal changes becomes zero. When the initialization processing unit 16 determines that the number of unprocessed modal changes is 0 (step S140, Yes), the modal change processing by the initialization processing unit 16 is terminated.

  In the present embodiment, the modal G code 50 is initialized based on the cancel G code. However, the modal G code 50 is initialized based on a preset M code or the like. Also good. In this embodiment, the modal G code 50 is initialized (changed), but modal data (information) such as an F code (speed command) may be initialized collectively.

  Thus, according to the embodiment, based on one preset G code command, the G code command state can be set and changed to the initial state of the machining step or the state at the time of starting the machining program. Making it easier. That is, the numerical control device 100 can be operated by a simple machining program 33.

  Further, since the modal G code setting information 32 can be arbitrarily set, if it is desired to make the workpiece coordinate system selection command valid until the machining program 33 is completed, the modal G code setting information 32 can be canceled by one G code command. This item can be selectively set.

  Further, even if the user forgets to set a G code for canceling the modal G code when the machining program 33 is created, the machining program 33 can be debugged in a short time.

  As described above, the numerical control device according to the present invention is suitable for control processing of a machine tool that processes a workpiece with a plurality of tools.

It is explanatory drawing for demonstrating the concept of the numerical control apparatus concerning embodiment. It is a block diagram which shows the structure of the numerical control apparatus concerning embodiment. It is a flowchart which shows the process sequence of a numerical controller. It is a figure which shows an example of the modal G code setting information. It is a figure which shows an example of a structure of a process program.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Setting information input part 12 Program input part 13 Storage control part 14 Setting information storage part 15 Analysis part 16 Initialization process part 17 Initialization information storage part 31 Cancel G code 32 Code setting information 33 Processing program 34 1 Block data 50 Modal G Code 100 Numerical controller 140 Non-volatile memory 170 Volatile memory G

Claims (2)

In a numerical control device that controls a predetermined device for each block based on a program described for each block by a control command code,
A storage unit for storing a plurality of command information for initializing modal data defined for each G code group , and initialization identification information for identifying a set of information including the plurality of command information;
An analysis unit that extracts the program for each block and determines whether or not initialization identification information corresponding to the initialization identification information stored in the storage unit is included in the extracted block;
When the analysis unit determines the initialization identification information corresponding to the initialization identification information from the extracted block, the analysis unit defines each G code group based on the plurality of command information corresponding to the initialization identification information. An initialization processor for initializing the modal data,
A numerical control device comprising:   The numerical control apparatus according to claim 1, wherein the initialization identification information includes a G code, an M code, or a T code.

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