JP6657144B2 - Machining program debug device and machine tool having the same - Google Patents

Description

  The present invention relates to a machining program debugging device for confirming the operation of a machine tool controlled by a machining program, and a machine tool having the same.

  Conventionally, with respect to a newly created machining program, a debugging operation has been performed in which it is checked in advance whether a machine tool controlled by the machining program operates as intended, and an appropriate correction is made. In this debugging work, an operator often checks the operation of the machine tool one block at a time using a single block function of executing a machining program one block at a time.

  As a technique for debugging a machining program as described above, for example, Japanese Patent Application Laid-Open No. 2007-128231 discloses that in a machining program confirmation mode, a single block operation is executed for each block in a single block operation at a low speed rapid traverse. A numerically controlled machine tool has been proposed in which the operator confirms and if there is no problem, increases the rapid traverse speed and executes the machine (Patent Document 1).

JP 2007-128231 A

  However, a machining program for machining a complicated three-dimensional shape such as a mold has an order of hundreds of thousands of blocks. For this reason, there is a problem that it is not practical to use such a single block function as described above when debugging such a machining program because it takes an enormous amount of time.

  On the other hand, when the single block function is turned off, the machine tool executes the machining program continuously and at high speed. For this reason, there is a problem that an operator who visually monitors the operation of the machine tool is forced to be nervous over a long period of time, and the work load is large. In addition, even if the operator pays enough attention, there is a risk that the block to be corrected may be overlooked in a moment away from the eye.

  In the debugging work, the area of special attention that the operator should pay particular attention to is the part where the tool performs the approach operation and the retreat operation. However, it is extremely difficult to specify which part in the machining program corresponds to the above cautionary range just by looking at the machining program. Therefore, after all, the operator currently constantly monitors the operation of the machine tool until the machining program ends.

  The present invention has been made in order to solve such a problem, and it is possible to reduce a work load on an operator involved in debugging of a machining program, and to prevent a worker from overlooking a range requiring attention in debugging. It is an object of the present invention to provide a program debugging device and a machine tool having the same.

  A machining program debugging device according to the present invention reduces a work load on an operator involved in debugging of a machining program and solves a problem of preventing an overlooked area in debugging from being overlooked. A machining program debugging device for checking the operation of a machine, comprising: a machining program analysis unit that analyzes the machining program and detects a retreat operation start line that starts a retraction operation of a tool after the machining operation; A pre-notification line determination unit that determines a pre-notification line based on a timing in the forward direction by an arbitrary pre-notification setting time longer than the line, and if the pre-notification line is reached during debugging of the machining program, the evacuation operation is performed shortly. Advance notification processing unit that executes advance notification processing to notify that the start line has been reached It has a.

  Further, as one aspect of the present invention, in order to solve the problem of reliably notifying that the operator will soon reach the caution area, wherever the operator is, it is determined whether or not an operator is present around the machining program debug device. An operator detection unit for detecting, the advance notification processing unit, when an operator is detected around the machining program debug device, executes the advance notification process in the machining program debug device or the machine tool When the operator is not detected, the advance notification processing may be performed on the mobile terminal of the operator or a device operated by the operator.

  Furthermore, as one aspect of the present invention, in order to solve the problem of improving the accuracy and reliability of debugging, the machining program analysis unit includes an entry operation end for terminating an entry operation of a tool executed after the retreat operation. A line is detected, and if no operator is detected around the machining program debug device in the cautionary range from the evacuation operation start line to the approach operation end line by the operator detection unit, the fact is recorded. An operator absence recording unit may be provided.

  Further, as one aspect of the present invention, in order to solve the problem of accurately and automatically determining a block before a predetermined time reaching the cautionary range as a prior notification line, the prior notification line determination unit includes: The cycle time of each block existing in the forward direction from the evacuation operation start line is sequentially added, and a block when the sum of the cycle times is equal to or longer than the advance notification set time is determined as the advance notification line. Is also good.

  Further, as one aspect of the present invention, in order to solve the problem of preventing the operator from waiting for a long time from when the execution of the advance notification line is started until reaching the caution range, the advance notification is performed. The row determining unit sequentially adds the cycle times of the respective blocks existing in the forward direction from the evacuation operation start row, and determines the cycle time of the block when the total of the cycle times becomes equal to or longer than the advance notification set time. When the timing is equal to or longer than the reference time and the timing is not included in the last section of the block, a value obtained by subtracting the advance notification setting time from the sum of the cycle times is stored as the notification start time, and the block is stored in the block. Is determined as the advance notification line, and the advance notification processing unit determines the advance notification after a lapse of the notification start time after reaching the advance notification line. It may perform the physical.

  Further, as one aspect of the present invention, in order to solve the problem of preventing the operator from waiting for a long time from when the execution of the advance notification line is started until reaching the caution range, the advance notification is performed. The row determining unit sequentially adds the cycle times of the respective blocks existing in the forward direction from the evacuation operation start row, and determines the cycle time of the block when the total of the cycle times becomes equal to or longer than the advance notification set time. When the time is equal to or longer than a reference time and the timing is included in the last section of the block, a block next to the block may be determined as the advance notification line.

  Furthermore, as one aspect of the present invention, in order to solve the problem of simply and automatically detecting the start block of the caution range, the machining program analysis unit includes a plurality of machining operations included in the machining program. Detecting a delimiting block indicating a delimiter, detecting a block including either the first rapid feed in the forward direction from the delimited block or the first cutting feed set at a predetermined feed speed or more as the retreat operation start line. Is also good.

  Further, as one aspect of the present invention, in order to solve the problem of allowing the operator to recognize the caution range at a glance, the machining program analysis unit includes an entry operation end line for ending the entry operation of the tool after the retreat operation. The system may further include a display control unit that detects and displays a cautionary range from the retreat operation start line to the approach operation end line on a display unit so as to be distinguishable from other lines during debugging of the machining program.

  Further, the machine tool according to the present invention is provided with a machining program according to each of the above aspects, in order to reduce the work load on the operator involved in debugging the machining program and to solve the problem of preventing the user from overlooking the cautionary range in debugging. It is provided with a debugging device.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to reduce the work load of the operator which concerns on debugging of a machining program, it is possible to prevent an overlooked range of caution in debugging.

FIG. 1 is a block diagram illustrating an embodiment of a machining program debugging device according to the present invention and a machine tool including the same. It is a figure showing the main operation of the machine tool in this embodiment. It is a figure showing an example of a processing program in this embodiment. It is a flowchart which shows the process when the machining program debug device of this embodiment analyzes a machining program. It is a flowchart which shows the process at the time of the processing program debug apparatus of this embodiment determining a prior notification line. It is a flowchart which shows the process at the time of the machining program debugging apparatus of this embodiment debugging a machining program.

  Hereinafter, an embodiment of a machining program debugging device according to the present invention and a machine tool including the same will be described with reference to the drawings.

  The machining program debugging device 1 according to the present embodiment is for an operator to perform a debugging operation in which the operation of the machine tool 10 controlled by the machining program is confirmed in advance and is appropriately corrected. Hereinafter, each configuration will be described in detail.

  The machine tool 10 cuts, drills, grinds, grinds, rolls, and cuts workpieces such as metal, wood, stone, and resin, such as a lathe, drilling machine, boring machine, milling machine, gear cutting machine, and grinder. It is a machine for performing various processes such as forging and bending. In the present embodiment, the machine tool 10 is configured to be numerically controllable by a machining program.

  The machining program debugging device 1 of the present embodiment is constituted by a computer such as a numerical control device for controlling a machine tool 10, and as shown in FIG. 1, a display input means 2 for mainly displaying and inputting various data. And communication means 3 for transmitting and receiving various data, storage means 4 for storing various data, and arithmetic processing means 5 for executing various arithmetic processing and functioning as each component described later. Hereinafter, each component will be described in detail.

  The display input means 2 is configured by a touch panel or the like, and has both an input function of receiving an input from an operator and a display function of displaying a machining program or the like during a debugging process. In the present embodiment, the display input unit 2 displays the display content input from the display control unit 56 described later. Note that the configuration of the display input unit 2 is not limited to the above, and a display unit having only a display function and an input unit having only an input function may be separately provided.

  The communication means 3 is for mounting a communication function in the machining program debugging device 1, and is composed of a communication module and the like. In the present embodiment, the communication unit 3 supports network communication such as a wired or wireless LAN (Local Area Network), and notifies a notification by the advance notification processing unit 55, which will be described later, to the mobile terminal 11 of the operator or the operator. To the device 12.

  The storage unit 4 stores various data and functions as a working area when the arithmetic processing unit 5 performs arithmetic processing. In the present embodiment, the storage unit 4 is configured by a ROM (Read Only Memory), a RAM (Random Access Memory), a flash memory, and the like. As shown in FIG. 1, a program storage unit 41 and a processing program storage unit 42, an analysis result storage unit 43, and an operator absence recording unit 44. Hereinafter, each component will be described in more detail.

  The machining program debug program 1a of the present embodiment is installed in the program storage unit 41. Then, the arithmetic processing means 5 executes the machining program debug program 1a, thereby causing a computer as the machining program debug device 1 to function as each component described later.

  In addition, the use form of the machining program debug program 1a is not limited to the above configuration. For example, the machining program debug program 1a may be stored in a computer-readable recording medium such as a CD-ROM or a USB memory, and may be directly read from the recording medium and executed. Further, an ASP (Application Service Provider) method or a cloud computing method may be used from an external server or the like.

  The machining program storage unit 42 stores a machining program to be debugged. In the present embodiment, the machining program is created by a CAM (Computer Aided Manufacturing) device, and is configured by G codes, M codes, and the like for numerically controlling the machine tool 10. As shown in FIG. 2, the main operations of the machine tool 10 are three operations, that is, an operation for entering the tool into the work, a processing operation for processing the work with the tool, and an evacuation operation for retracting the tool from the work. . Therefore, as shown in FIG. 3, the machining program repeatedly includes a plurality of blocks for instructing the approach operation, the machining operation, and the retreat operation.

  In the present embodiment, the machining program stored in the machining program storage unit 42 is analyzed in advance by the machining program analysis unit 51 before executing the debugging process, as described later, and during the debugging process, This is executed by a debug processing unit 53 described later.

  The analysis result storage unit 43 stores a result of analyzing a machining program in advance before executing a debugging process. Specifically, as shown in FIG. 1, the analysis result storage unit 43 stores the evacuation operation start line and the approach operation end line detected by the machining program analysis unit 51 described later, and the advance notification line determination unit 52 described later. For each of the determined prior notification lines, the corresponding line number is stored. In addition, the analysis result storage unit 43 stores a notification start time described later in association with a prior notification line.

  In the debugging work, the area of special attention that the operator should pay particular attention to is a part that performs an approach operation and a retreat operation in which the tool may interfere or collide with the workpiece. For this reason, in the present embodiment, as shown in FIG. 3, the range from the retreat operation start line that starts the retreat operation of the tool after the machining operation to the entry operation end line that ends the retraction operation of the tool after the retreat operation is the caution range. Specified as

  The operator absence recording unit 44 records the block where the operator was absent during debugging. In the present embodiment, the operator absence recording unit 44 does not detect an operator around the machining program debug device 1 in the caution range from the evacuation operation start line to the approach operation end line by the operator detection unit 54 described later. In the case, the fact is recorded. Specifically, the absent line number may be recorded, or the absent line number may be checked in a line number table having all the line numbers.

  The arithmetic processing unit 5 is configured by a CPU (Central Processing Unit) and the like, and executes the machining program debug program 1a installed in the storage unit 4 to execute the machining program analysis unit 51 as shown in FIG. , A pre-notification line determination unit 52, a debug processing unit 53, an operator detection unit 54, a pre-notification processing unit 55, and a display control unit 56. Hereinafter, each component will be described in more detail.

  The machining program analyzer 51 analyzes a machining program in advance. In a machining program, generally, the approach operation and the retreat operation are performed by rapid traverse. However, there is a case where the rapid traverse is actually used in the machining operation. Therefore, in the present embodiment, a search is made in the front-rear direction with reference to a separation block normally inserted between a plurality of machining operations, and a retreat operation start line and an approach operation end line are detected.

  Specifically, the machining program analysis unit 51 acquires a machining program in the machining program storage unit 42, and detects a break block while sequentially selecting an analysis target line to be analyzed from the machining program. Then, a block including either the first rapid feed in the forward direction or the first cutting feed set at a predetermined feed speed or more from the delimiter block is detected as a retreat operation start line, and the line number is detected as an analysis result storage unit. 43.

  In this embodiment, M01 (optional stop) shown in FIG. 3 is used as a delimiter block. However, the present invention is not limited to this. If it indicates a break between a plurality of machining operations, M00 (program stop), an arbitrary character string intentionally inserted by the creator of the machining program, or the like may be used. It may be a delimiter block. Further, when performing the rapid traverse, the feed rate (F) of G01 (the linear movement of the tool by the cutting feed) may be increased instead of the general G00 (movement of the tool by the rapid traverse). For this reason, in the present embodiment, both G00 and G01 at a speed equal to or higher than a predetermined feed speed are detected as blocks for starting fast-forward.

  Further, in the present embodiment, the machining program analysis unit 51 detects the line immediately before the block where the first machining operation is performed after the detected delimiter block as the entry operation end line, and stores the line number thereof as an analysis result storage. The information is stored in the unit 43. In addition, as a block which performs a machining operation, various cutting feeds (G01, G02, G03) and the like can be mentioned.

  The advance notification line determination unit 52 determines an advance notification line that determines the timing at which the operator is notified that the debugging process reaches the caution range. In the present embodiment, as shown in FIG. 3, the advance notice line determination unit 52 performs the advance notice line based on the timing in the forward direction by an arbitrary advance notice set time from the evacuation operation start line corresponding to the first line in the cautionary range. To determine. Specifically, the advance notification line determination unit 52 sequentially adds the cycle times of the blocks existing in the forward direction from the evacuation operation start line. Then, a block when the sum of the cycle times becomes equal to or longer than the advance notification set time is determined as an advance notification line, and the line number is stored in the analysis result storage unit 43.

  In the present embodiment, the advance notification setting time may be set to an arbitrary time (10 seconds or the like) by the user, and the optimum time is automatically set in accordance with various situations detected by a sensor or the like. It may be set. The cycle time is the processing time required to execute one block. When calculating the cycle time, the movement distance, feed speed and its override (magnification), acceleration / deceleration of the motor, The operation time (in the case of the M function) and the like are taken into account. As a result, an accurate cycle time is calculated, and the advance notification line is automatically and accurately determined.

  In the present embodiment described above, when the advance notification line determined by the advance notification line determination unit 52 is a block that requires a long time, the user must wait for a long time after the advance notification process described later is executed. It is possible. Therefore, in the present embodiment, the advance notification row determination unit 52 determines whether the cycle time of the block including the timing is equal to or longer than the reference time, and adjusts the timing of executing the advance notification process according to the result. It has become.

  Specifically, the advance notification line determination unit 52 sequentially adds the cycle times of the blocks existing in the forward direction from the evacuation operation start line. When the cycle time of the block when the sum of the cycle times becomes equal to or longer than the advance notification set time is shorter than the reference time, the block is determined as the advance notification line as described above. The reference time is preferably set to about 60 seconds or less, but can be changed as appropriate.

  On the other hand, the advance notification row determination unit 52 determines that the cycle time of the block when the sum of the cycle times is equal to or longer than the advance notification set time is equal to or longer than the reference time, and that the timing is included in the last section of the block. If not, a value obtained by subtracting the advance notification set time from the total of the cycle times is stored in the analysis result storage unit 43 as the notification start time.

  Note that the last section is a section within a predetermined time from the end of the block, and the predetermined time is preferably set to about several seconds, but can be changed as appropriate. Whether or not the timing is included in the last section is determined by whether or not a value obtained by subtracting the previous total cycle time from the advance notification setting time is equal to or less than a predetermined time that defines the last section. . That is, if the value is equal to or less than the predetermined time, it is determined that the current time is within the last section, and if the value is longer than the predetermined time, it is determined that the current time is not within the last section.

  The advance notification line determination unit 52 determines a block when the total of the cycle times is equal to or longer than the advance notification set time as the advance notification line, and stores the line number in the analysis result storage unit 43 together with the notification start time. It is supposed to. In this case, as described later, the advance notification processing unit 55 executes the advance notification process after a lapse of the notification start time from the arrival at the advance notification row.

  In addition, the advance notification line determination unit 52 determines that the cycle time of the block when the sum of the cycle times is equal to or greater than the advance notification set time is equal to or greater than the reference time, and that the timing is included in the last section of the block. In this case, the next block of the block is determined as the advance notification line, and the line number is stored in the analysis result storage unit 43.

  The debug processing unit 53 performs a debugging process of the machining program. In the present embodiment, the debug processing unit 53 reads out a machining program from the machining program storage unit 42 and sequentially executes operations specified by blocks constituting the machining program.

  In this embodiment, when the debug processing unit 53 reaches the evacuation operation start line stored in the analysis result storage unit 43, the debug processing unit 53 refers to the detection result of the operator detection unit 54. When no operator is detected, the debug processing unit 53 stops executing the machining program at the retreat operation start line. In addition, when receiving a restart of the execution from the display input unit 2 or the like, the debug processing unit 53 restarts the execution of the machining program.

  Furthermore, in the present embodiment, the debug processing unit 53 always executes the operator detection unit 54 while executing the cautionary range from the evacuation operation start line to the approach operation end line stored in the analysis result storage unit 43. Refer to the detection result of. When no operator is detected, the debug processing unit 53 stores the absence of the operator in the operator absence recording unit 44.

  The operator detecting section 54 detects whether or not an operator is present around the machining program debug device 1. In the present embodiment, the operator detection unit 54 determines the presence or absence of an operator based on whether or not a predetermined button (not shown) provided on the machining program debugging device 1 or the machine tool 10 has been pressed. ing. Therefore, the operator can be detected using existing equipment such as a touch panel and mechanical buttons.

  The operator detecting means is not limited to the above buttons, but may be any as long as it can detect the operator. For example, an image of a monitoring camera (not shown) installed around the machining program debug device 1 may be image-processed, and the operator may be detected based on whether the operator is looking at the machine tool 10. Further, an operator may be detected based on an output signal from a barrier sensor (not shown) provided around the machining program debug device 1, or another human sensor may be used.

  The advance notification processing section 55 executes an advance notification process for notifying the operator that the evacuation operation start line will be reached soon. In the present embodiment, the advance notification processing unit 55 refers to the detection result of the operator detection unit 54 when reaching the advance notification line during debugging of the machining program. Then, when an operator is detected around the machining program debug device 1, the advance notice processing unit 55 executes the advance notice process in the machining program debug device 1 or the machine tool 10. On the other hand, when the operator is not detected around the machining program debug device 1, the advance notification processing unit 55 notifies the operator's portable terminal 11 or the device 12 (other machine tool or the like) operated by the operator in advance. The processing is executed.

  Further, in the present embodiment, when an operator is detected around the machining program debug device 1, the cycle time of the block including the timing is equal to or longer than the reference time, and the timing is the last section of the block. If not included, the advance notification processing unit 55 reads the notification start time from the analysis result storage unit 43, and executes the advance notification process after the elapse of the notification start time since the execution of the advance notification row. Has become.

  The advance notification process is not particularly limited as long as the process can notify the operator. Specifically, a message may be displayed on the display input means 2, a warning sound may be output from a speaker (not shown), or a light may be blinked or lit. In the present embodiment, the mail address of the mobile terminal 11 of the operator and information on the device 12 operated by the operator are set in the storage unit 4 in advance.

  The display control unit 56 controls display contents to be displayed on the display input unit 2. In the present embodiment, the display control unit 56 causes the display input unit 2 to display the line being executed and a plurality of lines after the line during debugging of the machining program. Further, the display control unit 56 refers to the line numbers of the evacuation operation start line and the approach operation end line from the analysis result storage unit 43, and distinguishes the cautionary range from the evacuation operation start line to the approach operation end line from other lines. It is displayed on the display input means 2 as possible. For example, as shown in FIG. 3, by coloring only the background of the cautionary area, the operator can recognize the cautionary area at a glance.

  Next, the operation of the machining program debug device 1 of the present embodiment and the machine tool 10 having the same will be described with reference to FIGS.

  First, when debugging a machining program using the machining program debug device 1 of the present embodiment, a machining program for analyzing the machining program in advance and specifying a retreat operation start line, an approach operation start line, and a prior notification line Perform analysis processing.

  Specifically, as shown in FIG. 4, first, the machining program analysis unit 51 acquires a machining program (step S1), and initializes a parameter i indicating a row number of a row to be analyzed to 0 (step S2). ). Then, by incrementing (i + 1) the parameter i, the next line is selected as an analysis target line (step S3), and it is determined whether or not the analysis target line is the last line of the machining program (step S4). . As a result of the determination, if the analysis target row is the last row (step S4: YES), the machining program analysis processing ends.

  On the other hand, if the result of determination in step S4 is that the analysis target row is not the last row (step S4: NO), the machining program analysis unit 51 determines whether the analysis target row is a delimiter block (step S5). As a result of the determination, if the analysis target row is not a delimiter block (step S5: NO), the process returns to step S3, and the next row is selected as a new analysis target row.

  On the other hand, as a result of the determination in step S5, when the analysis target line is the delimiter block (step S5: YES), the machining program analysis unit 51 sets the parameter j indicating the search target line for searching for the evacuation operation start line. Initialize to the line number (i) of the current analysis target line (step S6). As a result, the criterion for searching for the evacuation operation start line is set in the partition block.

  Next, the machining program analysis unit 51 selects the previous row as a new search target row by decrementing the parameter j (j-1) (step S7), and the search target row starts fast-forwarding. It is determined whether or not the block is to be executed (step S8). As a result of the determination, if the block is not the fast forward start block (step S8: NO), the process returns to step S7, and the previous row is selected as a new search target row. As a result, blocks in the forward direction are sequentially searched from the delimiter block.

  On the other hand, as a result of the determination in step S8, if the search target line is the fast-forward start block (step S8: YES), the machining program analysis unit 51 sets the current search target line (j) as the evacuation operation start line, and It is stored in the storage unit 43 (Step S9). As a result, the evacuation operation start line, which is the start block of the caution range, is accurately and automatically detected.

  When the evacuation operation start line is detected (step S9), the advance notification line determination unit 52 determines the advance notification line based on the timing ahead of the evacuation operation start line by an arbitrary advance notification set time (step S9). S10). Specifically, as shown in FIG. 5, first, the prior notification line determination unit 52 initializes a parameter k indicating a calculation target line for calculating a cycle time to a line number (j) of the evacuation operation start line. At the same time, a parameter T indicating the sum of the cycle times is initialized to 0 (step S21).

Next, the prior notification row determination unit 52 selects the previous row (k-1) as a new calculation target row (k) by decrementing the parameter k (step S22). The advance notification line determination unit 52 calculates the cycle time _{(t k)} of the calculation target row (k), and adds the cycle time _{(t k)} to the total cycle time (T) (step S23). Thus, the cycle times of the blocks existing in the forward direction from the evacuation operation start line detected in step S9 are sequentially added.

Each time the total cycle time (T) is updated (step S23), the advance notice row determination unit 52 compares the total cycle time (T) with the advance notice set time (step S24). As a result of the comparison, if the total cycle time (T) is less than the advance notification set time (step S24: NO), the process returns to step S22, and the previous row (k-1) is replaced with a new calculation target row (k). ). On the other hand, as a result of the comparison in step S24, if the total cycle time (T) is equal to or longer than the advance notification set time (step S24: YES), the advance notification row determination unit 52 determines the cycle of the current calculation target row (k). time _{(t k)} is equal to or larger than the reference time (step S25).

As a result of the determination, if the cycle time of the current calculation target row (k) (t _k) is shorter than the reference time (step S25: NO), advance notice line determination unit 52, the current calculation target row (k) Is stored in the analysis result storage unit 43 as a prior notification line (step S28). As a result, if the block has a cycle time not so long, the block executed before the evacuation operation start line and before the elapse of the pre-notification set time is accurately and automatically determined as the pre-notification line.

On the other hand, the result of determination in step S25, if the cycle time of the current calculation target row (k) _{(t k)} is equal to or larger than the reference time (step S25: YES), advance notice line determining unit 52 in advance notification setting time minus the previous total cycle time (T-t _k) from is equal to or less than a predetermined time to determine the final interval (step S26). Thereby, it is determined whether or not the timing determined by the advance notification setting time is included in the last section of the block having the long cycle time.

As a result of the judgment in the step S26, when the value obtained by subtracting the previous total cycle time (T-t _k) from the pre-notification setting time is greater than the predetermined time (Step S26: NO), advance notice line determination unit 52 Then, a value obtained by subtracting the advance notification set time from the total cycle time (T) is stored as the notification start time (step S27), and the current calculation target row (k) is stored as the advance notification row (step S28). Thereby, in a block having a long cycle time, if the notification timing is not included in the last few seconds, a notification start time which determines a time from when the advance notification row is reached to when the advance notification processing is performed is separately calculated. You.

On the other hand, if the advance notice set by subtracting the previous total cycle time (T-t _k) from the time value is less than a predetermined time (step S26: YES), advance notice line determination unit 52, the current calculation target row The block (k + 1) next to (k) is determined as the advance notification line (step S29). Thus, in a block having a long cycle time, when the notification timing is included in the last few seconds, the next block is determined as the advance notification line without calculating the notification start time.

  When the prior notification line is determined by the above-described prior notification line determination process (step S9), the process returns to the machining program analysis process of FIG. 4, and the machining program analysis unit 51 again sets the parameter j indicating the search target line to the current analysis target. Initialization is performed with the row number (i) of the row (step S11). As a result, the criterion for searching for the entry operation end row is set in the partition block.

  Next, the processing program analysis unit 51 selects the next row as a new search target row by incrementing the parameter j (j + 1) (step S12), and the search target row starts a processing operation in a block. It is determined whether or not there is (step S13). As a result of the determination, if the block is not the processing start block (step S13: NO), the process returns to step S12, and the next row is selected as a new search target row. As a result, blocks in the backward direction are sequentially searched from the partition block.

  On the other hand, as a result of the determination in step S13, when the search target row is the processing start block (step S13: YES), the processing program analysis unit 51 determines the row (j−1) immediately before the current search target row. Is stored in the analysis result storage unit 43 as the entry operation end row (step S14). Thus, the entry operation end row, which is the end block of the caution range, is accurately and automatically detected.

  When the entry operation end row is detected (step S14), the machining program analysis unit 51 compares whether or not the row number of the current analysis target row exceeds the total number of machining program rows (step S15). As a result of the comparison, if the current row number of the analysis target row is equal to or smaller than the total number of rows (step S15: NO), since there is an unanalyzed block, the process returns to step S3, and the above-described processing is repeated. On the other hand, if the line number of the current line to be analyzed exceeds the total number of lines (step S15: YES), all blocks have been analyzed, and the machining program analysis processing ends.

  As described above, by executing the machining program analysis processing in advance, all the retreat operation start lines, the approach operation end lines, and the advance notice lines included in the machining program to be debugged are specified. Then, the debugging process of the present embodiment can be executed for the machining program on which the machining program analysis process has been executed.

  Specifically, as shown in FIG. 6, first, the display control unit 56 displays the machining program to be debugged on the display input unit 2 (step S31). As a result, the machining program for executing the debugging process is presented to the operator, and the block being executed and the block to be executed are visually confirmed.

  Subsequently, after the debug processing unit 53 initializes the parameter e indicating the line number of the execution target line of the machining program to 0 (step S32), the parameter e is incremented (e + 1), so that the next line is set to a new line. It is selected and executed as an execution target line (step S33). Then, the debug processing unit 53 determines whether or not the execution target line is the advance notification line (Step S34).

  As a result of the determination, if the execution target row is not the advance notification row (step S34: NO), the process returns to step S33, and the next row is selected as a new execution target row. On the other hand, as a result of the determination in step S34, when the execution target line is the advance notification line (step S34: YES), the operator detection unit 54 determines whether there is an operator around the machining program debug device 1 (step S34). S35). As a result, it is possible to perform a prior notification process suitable for the presence or absence of an operator.

  If the result of determination in step S35 is that an operator has been detected (step S35: YES), the advance notice processing unit 55 executes advance notice processing in the machining program debugging device 1 or the machine tool 10 (step S36). On the other hand, when the operator is not detected (step S35: NO), the advance notification processing unit 55 executes the advance notification processing on the mobile terminal 11 of the operator or the device 12 operated by the operator (step S37).

  This alerts the operator to reach the caution range soon, regardless of where he is. For this reason, oversight of the caution range in debugging is prevented, and the operator does not need to constantly monitor the machine tool 10 being debugged, thereby reducing the work load involved in debugging. In addition, since it is possible to operate a plurality of machine tools 10 simultaneously and in parallel, work efficiency is improved.

  Further, in the present embodiment, if the above-described notification start time is set in association with the advance notification line, the advance notification processing unit 55 performs the advance notification processing after the notification start time has elapsed since the arrival at the advance notification line. Is executed (step S36). Accordingly, if the cycle time of the advance notification line determined by the advance notification line determination unit 52 is long, the advance notification process is executed not after the execution of the advance notification line but after the elapse of the notification start time. The operator is not kept waiting for a long time.

  Further, in the present embodiment, when the cycle time of a block including the timing in the forward direction is longer than the evacuation operation start row by the advance notification set time and the timing is included in the last section of the block, The block is set as the advance notice line. As a result, it is prevented that it takes a long time from the start of the execution of the advance notification line to the arrival at the caution range. On the other hand, even if the advance notification line is set in the next block, the execution timing of the advance notification process hardly changes, so that the operational effect of the advance notification process is maintained.

  Next, the display control unit 56 displays a cautionary range from the retreat operation start line to the approach operation end line in the machining program displayed on the display input unit 2 (step S38). This allows the operator to recognize the cautionary range in debugging at a glance and to concentrate on checking, thereby improving debugging accuracy.

  Subsequently, the debug processing unit 53 selects and executes the next line as a new execution target line by incrementing the parameter e (e + 1) (step S39). Then, the debug processing unit 53 determines whether or not the execution target line is the save operation start line (Step S40). As a result of the determination, if the execution target row is not the save operation start row (step S40: NO), the process returns to step S39, and the next row is selected as a new execution target row.

  On the other hand, as a result of the determination in step S40, when the execution target line is the evacuation operation start line (step S40: YES), the operator detection unit 54 determines whether there is an operator around the machining program debug device 1 (step S40). Step S41). As a result of the determination, if the operator is absent (step S43: NO), the debug processing unit 53 stops executing the machining program (step S42).

  Accordingly, the execution of the range requiring attention is not started in a state where the operator is absent, and the reliability of the debugging work is improved. Further, by setting the advance notification setting time to be longer, the operator can return before the machining program stops, and the loss of time in the debugging work can be reduced.

  Next, the debug processing unit 53 records the absence of the operator in the operator absence recording unit 44 (Step S43). As a result, while the blocks in the range requiring attention are being executed, the blocks where the operator is absent are recorded. For this reason, the block that has not been confirmed by the operator is easily specified, so that the reconfirmation work is facilitated and the accuracy of debugging is improved. If there is no absence record, it is indirectly secured that the operator needs to confirm the range requiring attention.

  On the other hand, if the result of determination in step S41 is that an operator has been detected (step S41: YES), or if an instruction to resume execution has been received from the operator after the machining program has been temporarily stopped (step S44: YES), debugging is performed. The processing unit 53 increments the parameter e (e + 1), thereby selecting and executing the next line as a new execution target line (step S45). Then, the debug processing unit 53 determines whether or not the execution target line has exceeded the total number of lines of the machining program (step S46). If it has exceeded (step S46: YES), the debug processing ends.

  On the other hand, if the result of determination in step S46 is that the total number has not been exceeded (step S46: NO), the debug processing unit 53 determines whether or not the execution target line is the entry operation end line (step S47). If the result of the determination is that the line is not the entry operation end line (step S47: NO), the flow returns to step S43, and the next line is selected and executed while confirming the presence or absence of the operator. On the other hand, as a result of the determination in step S47, if the execution target line is the entry operation end line (step S47: YES), the process returns to step S33, and the next line is selected and executed. As a result, the above-described debugging process is executed for all the caution ranges included in the machining program.

According to the above-described embodiment, the following effects can be obtained.
1. It is possible to reduce the workload of the operator involved in debugging the machining program, and to prevent the user from overlooking the cautionary range in debugging.
2. Regardless of where the operator is, it can be reliably notified that the operator will soon reach the caution area.
3. By recording the absence of the operator, the accuracy and reliability of debugging can be improved.
4. The advance notification line can be accurately and automatically determined based on the timing before the advance notification setting time to reach the caution range.
5. It is possible to prevent the operator from having to wait for a long time from when the execution of the advance notification line is started to when the attention required range is reached.
6. The evacuation operation start line which is the start block of the caution range and the approach operation end line which is the end block of the caution range can be easily and automatically detected.
7. Since the operator can recognize the range requiring attention at a glance, the accuracy of debugging can be improved.
8. It is possible to prevent the execution of the range requiring attention from being started in a state where the operator is absent, thereby improving the reliability of the debugging work.
9. Even if an operator is absent, a time margin for returning to the machining program debugging apparatus 1 is given, and the stop of the debugging process can be suppressed as much as possible, and the time loss in the debugging work can be reduced.
10. There is no need to manually specify or insert the retreat operation start line, the approach operation start line, and the advance notification line, and a general machining program can be analyzed and debugged as it is.
11. The block in which the operator is absent can be confirmed after the fact within the caution range.

  The machining program debugging device 1 according to the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, in the present embodiment described above, the machining program debug device 1 is caused to function as one function of the numerical control device, but the present invention is not limited to this configuration.

  For example, the machining program debug program 1a according to the present invention is mounted on a CAD / CAM device having both a CAD (Computer-Aided Design) function and a CAM (Computer Aided Manufacturing) function, and the machining program debug is performed. The device 1 may be configured. In this case, the operation of the machine tool 10 can be confirmed and debugged by simulation without actually operating the machine tool 10.

  Further, the machining program debugging device 1 of the present embodiment has the operator absence recording unit 44 and the operator detection unit 54, but is not limited to this configuration. If the processing when the operator is absent is unnecessary, the operator absence recording unit 44 and the operator detection unit 54 need not be provided. In this case, the processes of steps S35, S37, and steps S41 to S44 in the debugging process are not required.

  Furthermore, in the above-described embodiment, the entry operation end row is detected in order to display the cautionary range so as to be distinguishable from other rows. However, if the identification display is unnecessary, the machining program analysis unit 51 does not need to detect the entry operation end line. In this case, the processing of steps S11 to S14 in the processing program analysis processing becomes unnecessary.

  Further, in the above-described embodiment, in order to prevent the operator from waiting for a long time after the execution of the advance notification process, the advance notification line determination unit 52 executes steps S25 to S27 and S29 in the advance notification line determination process. ing. However, when the cycle time of each block is not so long, the processing of steps S25 to S27 and S29 may be omitted. Furthermore, the prior notification line determination unit 52 may omit only the step S27 of setting the notification start time in the prior notification line determination process.

  Further, in the present embodiment, the advance notification row determination unit 52 determines that the cycle time of the block when the sum of the cycle times is equal to or longer than the advance notification set time is equal to or longer than the reference time, and is within the last section of the block. Only when the notification timing is included, the next block of the block is determined as the advance notification line. However, when the notification timing is included in the last section of the block regardless of the cycle time of the block, the advance notification line determination unit 52 may determine the next block after the block as the advance notification line.

DESCRIPTION OF SYMBOLS 1 Machining program debug apparatus 1a Machining program debug program 2 Display input means 3 Communication means 4 Storage means 5 Arithmetic processing means 10 Machine tool 11 Portable terminal 12 Equipment 41 Program storage unit 42 Processing program storage unit 43 Analysis result storage unit 44 Operator absence record Unit 51 Machining program analysis unit 52 Prior notification line determination unit 53 Debug processing unit 54 Operator detection unit 55 Prior notification processing unit 56 Display control unit

Claims (9)

A machining program debugging device for confirming an operation of a machine tool controlled by the machining program,
A machining program analysis unit that analyzes the machining program and detects a retreat operation start line that starts a retreat operation of the tool after the machining operation;
A prior notification line determination unit that determines a prior notification line based on a timing in a forward direction by any prior notification setting time from the evacuation operation start line,
When reaching the advance notification line during debugging of the machining program, a prior notification processing unit that executes a prior notification process to notify that the evacuation operation start line will be reached shortly,
A machining program debugging device. Having an operator detection unit to detect whether there is an operator around the machining program debug device,
When the operator is detected around the machining program debug device, the advance notification processing unit executes the advance notification process in the machining program debug device or the machine tool, and when the operator is not detected. 2. The machining program debug device according to claim 1, wherein the advance notification process is performed on a portable terminal of the operator or a device operated by the operator. The machining program analysis unit detects an entry operation end line that ends the entry operation of the tool executed after the retreat operation,
The operator detecting section, if no operator is detected around the machining program debug device in the cautionary range from the evacuation operation start line to the approach operation end line, an operator absence recording section that records the fact. The machining program debug device according to claim 2 having.   The advance notification line determination unit sequentially adds the cycle time of each block existing in the forward direction from the evacuation operation start line, and the block when the total of the cycle times becomes equal to or longer than the advance notification set time. The machining program debug device according to any one of claims 1 to 3, wherein the processing program debug device is determined as the advance notification line. The advance notification line determination unit sequentially adds the cycle time of each block existing in the forward direction from the evacuation operation start line, and the block when the total of the cycle times becomes equal to or longer than the advance notification set time. If the cycle time is equal to or longer than the reference time and the timing is not included in the last section of the block, a value obtained by subtracting the advance notification set time from the sum of the cycle times is stored as the notification start time. Along with, the block is determined as the advance notification line,
The machining program debug according to any one of claims 1 to 4, wherein the advance notification processing unit executes the advance notification process after a lapse of the notification start time after reaching the advance notification row. apparatus.   The advance notification line determination unit sequentially adds the cycle time of each block existing in the forward direction from the evacuation operation start line, and the block when the total of the cycle times becomes equal to or longer than the advance notification set time. 6. If the cycle time is equal to or longer than the reference time and the timing is included in the last section of the block, the next block of the block is determined as the advance notification line. The machining program debug device according to any one of the above.   The machining program analysis unit detects a partition block indicating a break between a plurality of machining operations included in the machining program, and the first fast-forward in the forward direction from the break block, or the first set at a predetermined feed speed or higher. The machining program debug device according to any one of claims 1 to 6, wherein a block including any one of the following cutting feeds is detected as the retreat operation start line. The machining program analysis unit detects an entry operation end line that ends the entry operation of the tool after the retreat operation,
8. A display control unit for displaying, on a display means, a cautionary range from the retreat operation start line to the approach operation end line during debugging of the machining program so as to be distinguishable from other lines. The debugging program for a machining program according to any one of the above.   A machine tool comprising the machining program debugging device according to any one of claims 1 to 8.

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