JP2007021656A - Tool life management device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool life management device, easily and accurately managing the information on the use of a tool in simple constitution. <P>SOLUTION: In an information management device 1, a predetermined device is controlled based upon a machining program 33 described by control command codes such as G codes, and the frequency of use of each tool used in the predetermined device is managed as a tool life based on the machining program 33. The device includes an analysis/setting part 13 and a block processing part 14 for counting the number of times for using the tool from the machining program 33 based upon the additional condition information designating a predetermined machining condition and the control command code. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tool life management apparatus that manages information related to a tool for machining a workpiece based on a machining program.

  A processing device or the like that performs processing (drilling) or the like of a workpiece is controlled by a numerical control device. In such a processing apparatus, a plurality of tools operate according to a plurality of conditions, and perform various processing on the workpiece. A tool for processing a workpiece deteriorates in accordance with the number of drilling processes or the like of the workpiece. For this reason, each tool has a tool life, and it is desired to manage each tool life appropriately. There is a technique for managing the tool life of such a tool based on a machining program for controlling the operation of a machining apparatus or the like.

  The tool life management method for drilling in a conventional numerical control device is configured to extract only the G code for drilling operation from the machining program and manage the tool life based on the number of times the G code is commanded. Yes. And before implementation of actual machining, it is operating so as to judge whether the life of the machining tool is good or not and display a warning (see, for example, Patent Documents 1 and 2).

JP-A-5-88729 JP 2000-246586 A

  However, in the above conventional technique, since only the G code that is a drilling operation is extracted to determine the tool life, in order to monitor a plurality of types of drilling operations such as a synchronous tap cycle and a deep hole drill cycle, etc. However, there was a problem that the processing of the ladder program and system software for monitoring the drilling operation had to be corrected each time.

  In the case of machining programs written in a fixed cycle, macro program, etc., there are those that perform multiple drilling operations with one command, and if only the number of G code command commands is counted, the actual number of drilling operations There was a problem that it was counted low.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a tool life management apparatus that can manage information on tool use easily and accurately with a simple configuration.

  In order to solve the above-described problems and achieve the object, the present invention controls a predetermined device based on a program described in a control command code, and each tool used in the predetermined device based on the program. In the tool life management apparatus that manages the number of times the tool is used as a tool life, a count processing unit that counts the number of times the tool is used from the program based on the additional condition information that specifies a predetermined machining condition and the control command code is provided. It is characterized by that.

  According to the present invention, since the number of times the tool is used is counted from the program based on the additional condition information specifying a predetermined machining condition and the control command code, it is possible to accurately manage information on tool usage with a simple configuration. Has the effect of becoming.

  Embodiments of a tool life management apparatus 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 an information management apparatus (tool life management apparatus) according to the present embodiment will be described. The information management device 1 is a device that manages information related to tool life, such as a processing device (machine tool) that performs processing of a workpiece. In the present embodiment, a G code for measuring the number of times the tool is used is set in advance in the information management apparatus 1 using parameters or the like. Further, additional conditions for processing such as cutting feed and main spindle forward rotation (main spindle reverse rotation) are set in advance, and the number of times the tool is used is counted when these additional conditions are satisfied.

  FIG. 1 is an explanatory diagram for explaining the concept of the information management apparatus according to the embodiment. The information management device 1 determines the tool life based on conditions set in advance for each tool type and each tool processing step. Here, the analysis / setting unit 13 and the block processing unit 14 correspond to the count processing unit described in the claims.

  Information (setting condition information 31) for determining the tool life is input in advance to the information management apparatus 1 and stored in the storage unit 12 (1). The setting condition information 31 includes information for identifying a tool, information for identifying a tool life determination method corresponding to the G code, information on a condition for counting the number of times the tool is used, information on the life of each tool, and the like. ing.

  When the information management apparatus 1 controls a driving means (a driving means such as a tool) of a processing apparatus (not shown), a processing program 33 (a program described by a control command code such as a G code) for processing a workpiece. ).

  The analysis / setting unit 13 analyzes the setting condition information 31 and the machining program 33 input from the outside (2), and makes various settings for determining the tool life based on the setting condition information 31 and the machining program 33. Do. Specifically, the analysis / setting unit 13 sets conditions for counting the number of times the tool is used in order to determine the tool life (3).

  The block processing unit 14 counts the number of times the tool is used for each block of the machining program 33 based on the conditions set by the analysis / setting unit 13 (4). Then, the tool life determination unit 15 determines whether the tool being used is a lifetime based on the number of times the tool is used counted by the block processing unit 14 and the tool life in the setting condition information 31 stored in advance. It is determined whether or not (5).

  Based on the determination result of the tool life determination unit 15 (whether or not the tool is at the end of life), the warning processing unit 16 sends information (warning message or the like) indicating that the tool is at the end of life to an external device, a liquid crystal monitor, or the like. It transmits to a display means (not shown).

  Here, in order to clarify the difference between the tool life determination method in the embodiment and the conventionally used tool life determination method, problems of the conventionally used tool life determination method will be described.

  As a conventional method of the conditions used for determining the tool life, for example, there are a method for determining the tool life based on the tool usage time and a method for determining the tool life based on the number of times the tool is used. When determining the tool life based on the tool usage time, for example, only the cutting feed time commanded by a G code such as G01 in the machining program 33 is counted, and the counted cutting feed time is set in advance. Judge that the tool has reached the end of its life when the maximum life is exceeded.

  Further, when the tool life is determined by the number of times the tool is used, for example, the tool life is determined by the number of times the tool is mounted on the spindle. That is, after the tool to be mounted on the spindle is determined based on the T command (designation of the tool) in the machining program 33, the tool is mounted on the spindle when the M06 command (tool change command) is extracted from the machining program 33. Judgment is made and the number of times of use is counted once. At this time, the number of uses is not counted up until the next tool change is performed. Then, it is determined that the tool has reached the end of life when the number of times that the tool has been counted up exceeds the preset maximum tool life.

  By the way, in the program such as the machining program 33, when drilling is performed, for example, when two cutting feeds (G01) are commanded by one operation by a synchronous tap command or the like, or by one command by a fixed cycle, a macro program, or the like. Multiple drilling operations may be commanded.

  FIG. 2 is a diagram for explaining a synchronous tap command. In the synchronous tap command (G84) shown in the figure, positioning (rapid feed) is performed on the X axis = x1, Y axis = y1 by the G00 command (11), and positioning is performed on the Z axis = r1 by the G00 command ( 12). Then, cutting feed (drilling processing) is performed at a feed speed of f1 to the position of Z axis = z1 by the G01 command (13), and stopped at the hole bottom position by a dwell time of p1 by the G04 command (14).

  Thereafter, the spindle is rotated in reverse by the M04 command (15), and the cutting feed is performed at the feed speed of f1 to the position of the Z axis = −z1 by the G01 command (16). (17).

  Then, the spindle is rotated forward in accordance with the M03 command (18), and processing in the G98 mode or G99 mode is performed (19). The G98 mode here is a process of moving to the Z-axis = −r1 by the G00 command, and the G99 mode is no movement.

  In such a synchronous tap command, there are two cutting feeds (G01 command) of processing (13) and processing (16) in one drilling operation. For this reason, in the conventional method of counting the drilling process based on the number of times of the G01 command, the number of drilling is determined to be “2 times”.

  In order to avoid this, there is a method of counting only the number of G84 commands (tapping cycles). However, even when only the number of G84 commands is counted, when a plurality of drilling operations (for example, grid-shaped drilling processing) are commanded with one command by a fixed cycle or the like, the number of drilling is appropriately set. Cannot be counted.

  Here, the grid-shaped drilling process will be described. FIG. 3 is an explanatory diagram for explaining the grid-shaped drilling process. As shown in the figure, for example, a plurality of grid holes (for example, 10 in the X direction and 5 in the Y direction) are arranged at equal intervals (for example, 50 mm intervals) in the X and Y directions in the figure. It is a process to process a slot. For such a grid-shaped drilling process, a plurality of drilling processes are performed by one G37.1 command or the like by a fixed cycle or the like.

  FIG. 4 is a diagram showing an example of a grid-shaped drilling program according to the G37.1 command. In the grid-like drilling process according to the G37.1 command, the tool is moved to the second origin of the Z axis (G91 G30 Z0), and then the X axis and the Y axis are moved to the second origin (G30 X0 Y0).

  Next, the tool number “1” is called (T1), the tool is changed, and the tool is attached to the spindle (M6). Next, positioning is performed at a position of X = 150 mm and Y = 50 mm by an absolute value command (G90 G0 X150 Y50). Next, considering the length of the tool, the Z-axis is moved so that the tip of the tool is at a position of 50 mm (G43 Z50 H1), and forward rotation is performed at 3000 revolutions of the spindle (S3000 M3).

  Then, the process indicated by the program 51 is performed. That is, tapping (G91, G84) is commanded by the feed F20, and the tapping shown in FIG. 3 is repeated (G37.1 X200 Y100 I50 J50 P10 K5). For example, with a G37.1 command, a position (X200, Y100) that is 200 mm away from the start point and 100 mm away in the Y direction from the starting point (X200, Y100) is a reference hole at an interval (I50, J50) of 50 mm in the X direction and 50 mm in the Y direction. The grid-shaped holes that are lined up, 10 holes in the X direction and 5 holes in the Y direction (P10, K5) are processed. Thereafter, the tap processing mode is canceled (G80).

  Next, the Z-axis is pulled back to the position of 50 mm (G1 Z50 F100), and the rotation of the main shaft is stopped (M5). Next, the Z axis is moved to the reference point (G91 G28 Z0), the X axis and the Y axis are moved to the reference point (G28 X0 Y0), and the program is terminated (M30).

  Even when only the number of G84 commands in the machining program 33 is counted, in the case of a grid drilling command, a plurality of drilling processes are executed by one G37.1 command. It becomes impossible to count properly.

  Therefore, the information management apparatus 1 according to the present embodiment determines the tool life with respect to processing when a plurality of drilling operations are performed by one G code command such as G37.1. Specifically, when drilling processing is performed using a G code such as a G37.1 command, only the number of times the G37.1 G code is commanded is counted. Then, as a condition for counting the number of times G37.1 is commanded, the cutting feed of only one of forward rotation and reverse rotation in the grid machining commanded by “G37.1” is counted as the number of times the tool is used. Up.

FIG. 5 is an example of a program in which G37.1 is expanded. In G37.1, first, the X axis is moved to x1, and the Y axis is moved to y1 (G00 Xx1 Yy1). Next, ny is copied to the common variable # 100 (# 100 = # 6), and Δx is copied to the common variable # 200 (# 200 = # 4 ^* ).

  Then, as the process of # 200, 1 is subtracted from the value of # 100 and stored in # 100 (# 100 = # 100-1). If the value of # 100 is smaller than 0, the process jumps to N500 (IF [# 100 LT 0] GOTO500). Then, nx is copied to the common variable # 101 (# 101 = # 16).

Next, as the processing of # 300, 1 is subtracted from the value of # 101 and stored in # 101 (# 101 = # 101-1). If the value of # 101 is smaller than 0, the process jumps to N400 (IF [# 101 LT 0] GOTO400). Next, the Z axis is moved to z1 in the tap machining mode, and the processes (13) to (18) described in FIG. 2 are performed. That is, the processes (G84 Zz1 Rr1 Ff1 L0) of (G1 Zz1 Ff1), (G4 Pp1), (M4), (G1 Z-z1 Ff1), (G4 Pp1), and (M3) are performed. Next, it moves by Δx (G0X [# 200]) and jumps to N300 (GOTO300). Next, as a process of # 400, it moves by Δy (G0Y [# 5]), reverses the X-axis direction (# 200 = # 200 ^* -1), and jumps to N200 (GOTO200).

  Thereby, G84 during the drilling operation of the G37.1 command is executed by the two cutting feeds (13) and (16) described in FIG. 2, but as shown in FIG. Is set to the condition to count up once as the number of times the tool is used, and G37.1 is added with the condition to count up as the number of times the tool is used when the spindle is rotating forward (or reverse) By doing so, it is possible to count the correct number of times the tool is used even when a plurality of drilling operations are performed with one command.

  Next, the configuration of the information management apparatus 1 according to the present embodiment will be described. FIG. 6 is a block diagram showing a configuration of the information management apparatus according to the exemplary embodiment of the present invention. The information management device 1 is a device (computer or the like) that manages tool life and the like based on the machining program 33 and machining results (drilling history) using tools, and includes an input unit 11, a storage unit 12, and analysis / setting. Part 13, block processing part 14, tool life determination part 15, and warning processing part 16.

  The input unit 11 includes information input means such as a mouse and a keyboard, a processing program 33 for processing a workpiece, setting condition information 31 for determining whether or not a tool has a lifetime, and the like. Enter. The machining program 33 includes information (G code) for determining a functional mode of a machining machine and / or CNC (Computerized Numerical Control), information for identifying a tool for machining a workpiece (tool number), and the like. The information 31 includes information (parameter data) for determining the tool life by counting the number of times the tool is used and the usage time. The storage unit 12 stores setting condition information 31 and the like input to the input unit 11.

  The analysis / setting unit 13 analyzes the setting condition information 31 and the machining program 33 input from the outside, and performs various settings (tool usage) for determining the tool life based on the setting condition information 31 and the machining program 33. Setting conditions for counting the number of times). The analysis / setting unit 13 is activated from a block processing unit 14 that executes processing at predetermined intervals. The analysis / setting unit 13 includes a life management target flag 21 and an additional condition setting flag 22.

  The life management target flag 21 indicates the number of times the tool is used when the machining program 33 being executed satisfies additional conditions set by the setting condition information 31 (at the time of cutting feed, forward rotation of the main spindle, and reverse rotation of the main spindle). Is a flag indicating whether or not the G code counts. The additional condition setting flag 22 is a flag for setting an additional condition in the setting condition information 31.

  The block processing unit 14 counts the number of times the tool is used for each block of the machining program 33 based on the tool life determination conditions (life management target flag 21 and additional condition setting flag 22) set by the analysis / setting unit 13. To do. The block processing unit 14 counts the number of times the tool is used at a predetermined cycle (for example, every 5 msec) during the processing of the workpiece by the processing program 33.

  The tool life determination unit 15 determines whether or not the tool being used has a lifetime based on the number of times the tool is used counted by the block processing unit 14 and the setting condition information 31 stored in the storage unit 12 in advance. Determine. The tool life determination unit 15 determines the tool life at a predetermined cycle (for example, every 5 msec) during the processing of the workpiece by the processing program 33.

  The warning processing unit 16 transmits a warning message related to the tool life to a display unit such as a liquid crystal monitor based on the determination result of the tool life determination unit 15. The warning processing unit 16 performs a warning process regarding the tool life when the tool life determination unit 15 determines that the tool life is reached.

  Next, an operation processing procedure of the information management apparatus 1 will be described. Here, as an operation processing procedure of the information management apparatus 1, a procedure for setting a tool usage count by the analysis / setting unit 13 and a procedure for counting a tool usage count by the block processing unit 14 will be described. The setting condition information 31 is input to the information management apparatus 1 from the input unit 11 and stored in the storage unit 12 in advance. Here, the configuration and relationship of the setting condition information 31 will be described.

  FIG. 7 is a diagram illustrating an example of setting condition information. The setting condition information 31 is associated with information on “tool number”, “ST”, “method”, “G code”, “cutting”, “M03 / M04”, “life”, and “use time”, respectively. It is an information table. The “method” and “G code” here correspond to the first identification information described in the claims, and “cutting” and “M03 / M04” correspond to the additional condition information.

  The “tool number” is information for identifying a tool used when the processing apparatus processes a workpiece. The “tool number” is assigned a predetermined number that can be identified for each tool. “ST” is a status code related to the usage state and usage history of the tool. When “ST” is “0”, it indicates an unused tool, when “ST” is “1”, it indicates that the tool is in use, and when “ST” is “2”, the life is over. Indicates that the tool is

  “Method” is information indicating a method for determining the tool life. When “Method” is “0”, the tool life is determined based on the usage time of the tool (time for cutting feed). When “Method” is “1”, the number of times the tool is mounted on the spindle. The tool life is determined based on (the number of times the tool becomes a spindle tool), and when the “method” is “2”, the tool life is determined based on the number of times that a predetermined G code is designated by “G code”. Indicates. That is, when the “method” is “2”, it indicates that the tool life is determined by the G code comparison method (G code designation type) by parameter registration.

  The G code comparison method by parameter registration here determines the tool life based on a predetermined condition (additional condition) for counting the number of times the tool is used when a predetermined G code is designated. Indicates. For example, when the G37.1 command is issued, the tool life is determined by counting the number of times the tool is used for each cutting feed during normal rotation of the spindle.

  “G code” is a G code corresponding to the tool life determination method set in “2” of “method”. For example, when the “G code” is “37.1”, “84”, “34”, the tool life is determined based on the number of times the G37.1 command, the G84 command, and the G34 command are designated. Note that the G34 command here is a bolt hole circle, and is used in combination with a fixed cycle such as the G84 command. Specifically, G34 is divided into n pieces (n is a natural number) by dividing the circumference into n (n is a natural number) starting from a point that forms an angle θ with the X axis on the circumference of the radius r from the center position of the bolt hole circle. This is a command to process holes. When determining the tool life based on the number of times the G37.1 command, the G84 command, and the G34 command are specified, the tool life is determined in consideration of “cutting” and “M03 / M04” in the setting condition information 31. . Further, when “0” is designated by “G code”, the tool life judging method designated by “method” is used.

  “Cutting” is a condition related to cutting when counting the number of times the tool is used. When “0” is designated in “cutting”, the number of times the tool is used is counted up once when the designated G code is commanded. When “1” is designated in “cutting”, the number of times the tool is used is counted up every time a G code for cutting feed is designated from the designated G codes.

  “M03 / M04” is a condition related to the rotation direction of the spindle when counting the number of times the tool is used. When “1” is designated in “M03 / M04”, “1” is designated in “cutting”, and the G code of the cutting forward rotation of the main spindle (M03) is selected from the designated G codes. Every time it is specified, the number of times the tool is used is counted up once.

  When “2” is designated in “M03 / M04”, “1” is designated in “cutting”, and the G code for the cutting feed of the spindle reverse rotation (M04) is designated from the designated G code. Every time the tool is used, the number of times the tool is used is counted up once.

  When “0” is designated in “M03 / M04”, the number of times the tool is used is counted up once based on the condition designated in “cutting”. That is, when “1” is designated for “cutting”, the number of times the tool is used is counted up once every time the main axis normal rotation (main axis reverse rotation) cutting feed is designated from the designated G code. When “0” is specified for “cutting”, the number of times the tool is used is counted up once when a predetermined G code is specified for “G code”.

  For example, when the “tool number” is “2” to “4”, the tool life is determined by the method “2”. When the “tool number” is “2”, the number of times the tool whose “tool number” is “2” is used each time G37.1 is instructed and the cutting feed G code is instructed during normal rotation of the spindle. Is counted up once.

  When the “tool number” is “3”, the number of times the tool is used is counted up once when G84 is commanded. When the “tool number” is “4”, G34 is instructed, and the number of times the tool is used is one each time the G code for spindle forward rotation or spindle reverse rotation feed is specified from the specified G code. Count up.

  “Life” is setting information related to the tool life. “Life” is the number of times of use of the maximum life of the tool (for example, 200 times when the tool number is “5”) or use time of the maximum life of the tool (for example, 660 minutes when the tool number is “1”) Is shown. In the following description, for convenience of explanation, items of “method”, “G code”, “cutting”, and “M03 / M04” may be collectively referred to as life management data 60. “Usage time” is information relating to the total usage time of the tool. “Use time” is rewritten in the information management apparatus 1 in accordance with the use time of the tool after the setting condition information 31 is input to the input unit 11.

  FIG. 8 is a flowchart showing a procedure for setting a count of the number of times the tool is used by the analysis / setting unit. After the setting condition information 31 is stored in the storage unit 12 of the information management apparatus 1, the machining program 33 is input from the input unit 11. A machining apparatus (not shown) causes the servo / spindle motor or the like to start machining the workpiece based on the machining program 33.

  When the processing of the workpiece by the processing program 33 is started, the block processing unit 14 activates the analysis / setting unit 13. The analysis / setting unit 13 reads one block data for performing the next machining process from the machining program 33 currently being executed by a machining apparatus (not shown) or the like (step S100).

  The analysis / setting unit 13 extracts the “tool number” of the tool currently mounted on the spindle from the read one block data, and the information (life management data) in the setting condition information 31 corresponding to this “tool number” 60) is acquired from the storage unit 12 (step S101).

  Based on the setting condition information 31 acquired from the storage unit 12, the analysis / setting unit 13 determines whether the “method” corresponding to the tool currently mounted on the spindle is “2” (G code comparison method by parameter registration). (G code designation type)) is determined (step S102).

  When the “method” is “0” or “1” and the G code comparison method is not based on parameter registration (No in step S102), the analysis / setting unit 13 determines the tool life by the G code comparison method based on parameter registration. The tool life is determined by the usage time of the tool or the number of times the tool is used based on the information designated by the “method”.

  If the “method” is “2” and the G code comparison method is based on parameter registration (Yes in step S102), the analysis / setting unit 13 has already turned off the life management target flag 21 in the tool life determination process of the previous block. It is determined whether or not (step S103).

  When the analysis / setting unit 13 determines that the life management target flag 21 is off (step S103, Yes), the analysis / setting unit 13 reads the read 1 block data and the G code of the setting condition information 31 ( G codes designated by “method” are compared (step S104).

  Then, the analysis / setting unit 13 determines whether or not the read one block data matches the G code designated by “2” of “method” of the setting condition information 31 (step S105). Specifically, the G37.1 command is given to the read one block data. It is determined whether or not a G84 command, a G34 command, or the like is included.

  When the analysis / setting unit 13 determines that the read one block data matches the G code specified by the “method” of the setting condition information 31 (Yes in step S105), the analysis / setting unit 13 determines the life management target flag 21. Is set to ON (step S106).

  On the other hand, when the analysis / setting unit 13 determines in the process of step S103 that the life management target flag 21 is not turned off (step S103, No), the machining process (read block) is in a fixed cycle or It is determined whether the macro program is being executed (step S111).

  When the machining process is not in the fixed cycle or the macro program (No in step S111), the analysis / setting unit 13 performs the processes in steps S104 and S105. That is, the analysis / setting unit 13 compares the read one block data with the G code of the setting condition information 31 and determines whether or not they match.

  When the analysis / setting unit 13 determines that the read one block data matches the G code specified by “2” of “method” of the setting condition information 31 (Yes in step S105), the analysis / setting unit 13 Sets the life management target flag 21 to ON (step S106).

  As a result, the block processing unit 14 uses the tool when the machining program 33 being executed satisfies additional conditions (during cutting feed, main spindle forward rotation, main spindle reverse rotation) and the like based on the life management target flag 21. It is possible to determine whether or not the G code counts the number of times.

  Note that if the command in one block is the G37.1 command, the G37,1 command is a command in which the commands of a plurality of blocks are combined into one, so the life management target flag 21 is turned on until the fixed cycle command ends. Keep doing it. The life management target flag 21 is turned off when the tool count setting process by the analysis / setting unit 13 is out of the target G code command range.

  In the process of step S111, when the analysis / setting unit 13 determines that the machining process is in a fixed cycle or a macro program (step S111, Yes), the analysis / setting unit 13 turns on the life management target flag 21. It sets (step S106).

  After the process of step S106, the analysis / setting unit 13 determines whether or not the additional conditions (“cutting”, “M03 / M04”) in the setting condition information 31 are set (step S107). Specifically, it is determined whether or not “1” is set for “cutting” in the setting condition information 31 and whether “1” or “2” is set for “M03 / M04”. .

  If the analysis / setting unit 13 determines that an additional condition is set in the setting condition information 31 (step S107, Yes), the additional condition in the setting condition information 31 is set in the additional condition setting flag 22 for analysis / The setting process of the life management target flag 21 and the additional condition setting flag 22 by the setting unit 13 is ended (step S108).

  For the additional condition setting flag 22, as an additional condition in the setting condition information 31, for example, every time a cutting feed G code is specified from a specified G code, the number of times the tool is used is counted up (“Cutting” ) And the number of times the tool is used is counted up once every time the G code for cutting forward rotation (M03) is designated from the designated G code ("M03 / M04"). ") Corresponding to" 1 ")) and the like are set.

  As a result, the block processing unit 14 determines, based on the additional condition setting flag 22, whether or not the machining program 33 being executed satisfies the additional conditions (at the time of cutting feed, main spindle forward rotation, main spindle reverse rotation) and the like. It becomes possible.

  On the other hand, when the analysis / setting unit 13 determines that the additional condition is not set in the setting condition information 31 (No at Step S107), the life management target flag 21 and the additional condition setting flag 22 by the analysis / setting unit 13 are used as they are. The setting process is terminated (step S108).

  When the analysis / setting unit 13 determines in the process of step S105 that the read 1 block data does not match the G code specified by the “method” of the setting condition information 31 (No in step S105), the analysis / setting unit. 13 sets (clears) the life management target flag 21 to OFF (step S109). Then, the analysis / setting unit 13 clears the additional condition data set in the additional condition setting flag 22 (step S110), and the analysis / setting unit 13 sets the life management target flag 21 and the additional condition setting flag 22. The process ends (step S108).

  Information in the life management target flag 21 and the additional condition setting flag 22 set by the analysis / setting unit 13 is the block processing unit 14 as one block analysis data of the machining program 33 created as one data for each block. Sent to.

  FIG. 9 is a flowchart illustrating a procedure of a process for counting the number of times the tool is used by the block processing unit. The block processing unit 14 determines whether one block (step S100 in FIG. 8) of the machining program 33 read by the analysis / setting unit 13 is a block on which the count process is executed for the first time (step S200).

  When one block of the machining program 33 read by the analysis / setting unit 13 is not a block for which the counting process is executed for the first time (when the counting process for the number of times of tool use has already been completed) (No in step S200), the block The processing unit 14 ends the counting process of the number of times the tool is used in one block.

  On the other hand, when one block of the machining program 33 read by the analysis / setting unit 13 is a block for which count processing is executed for the first time (Yes in step S200), the block processing unit 14 performs interpolation processing for each block. It is determined whether or not the life management target flag 21 in the analysis / setting unit 13 is turned on (step S201).

  As the interpolation processing for each block here, for example, a movement command is generated by dividing a movement point when moving the X axis or the like at a predetermined cycle. For example, when the X-axis is moved 100 mm from the current position 0, it is divided by an interpolation period of 5 msec to generate a movement command of about 8.3 μm per interpolation process.

  When the life management target flag 21 is not turned on (No at Step S201), the block processing unit 14 ends the counting process of the number of times the tool is used for one block. On the other hand, when the life management target flag 21 is on (step S201, Yes), the block processing unit 14 determines whether or not a predetermined additional condition is set in the additional condition setting flag 22 (step S202).

  When the block processing unit 14 determines that a predetermined additional condition is set in the additional condition setting flag 22 (Yes in step S202), the block processing unit 14 determines that the data in one block of the machining program 33 is an additional condition. It is determined whether or not the additional condition set in the setting flag 22 matches (step S203).

  For example, in the data in one block of the machining program 33, a cutting feed G code is designated from a designated G code (G37.1, etc.), and the spindle normal rotation cutting feed G code is designated from the designated G code. It is determined whether it is specified.

  When the block processing unit 14 determines that the data in one block of the machining program 33 matches the additional condition set in the additional condition setting flag 22 (Yes in step S203), the block processing unit 14 adds the block data. When the condition is satisfied, the number of times the tool is used is counted up (step S204).

  For example, in the data in one block of the machining program 33, a cutting feed G code is designated from a designated G code (G37.1, etc.), and the spindle normal rotation cutting feed G code is designated from the designated G code. If specified, the tool usage count is incremented once each time the main axis normal rotation cutting feed G code is specified from the specified G code. The counted number of times of use is stored in the storage unit 12 or the like, and the next time, the block processing unit 14 counts up the number of times of use of the tool from the number of times of use stored in the storage unit 12.

  Thereby, the information management apparatus 1 counts up the number of times the tool is used when a predetermined additional condition set in advance is satisfied based on the G code comparison method (G code set in advance) by parameter registration. It is possible to count up the number of times the tool is used during drilling only when the spindle is rotating forward during feed. That is, it is possible to count the number of times the tool is used in proportion to the number of holes drilled, such as a synchronous tap cycle and a deep hole drill cycle, and it is possible to accurately manage the tool life.

  On the other hand, when the block processing unit 14 determines that the data in one block of the machining program 33 does not match the additional condition set in the additional condition setting flag 22 (No in step S203), the block processing unit 14 The process of counting the number of times the tool is used in one block is finished.

  Also, in the process of step S202, when the block processing unit 14 determines that a predetermined additional condition is not set in the additional condition setting flag 22 (No in step S202), the block processing unit 14 confirms the additional condition. The number of uses is counted up without performing it (step S204). That is, the block processing unit 14 here counts up the number of times the tool is used when a G code command set in the “G code” of the setting condition information 31 is commanded in the block. When the number of times the tool has been used is counted up, the block processing unit 14 sends the counted number of times the tool has been used to the tool life determination unit 15.

  The tool life determination unit 15 stores information (“life”) in the setting condition information 31 corresponding to the “tool number” of the tool for which the analysis / setting unit 13 has set the count of the number of times the tool is used from the storage unit 12. get. Then, the tool life determination unit 15 determines whether or not the number of times of use of the tool sent from the block processing unit 14 exceeds the maximum value of life management set within “life” (step S205).

  Setting is performed when the tool life determination unit 15 determines that the number of times the tool is sent from the block processing unit 14 exceeds the maximum value of life management set in the “life” (step S205, Yes). The item of “ST” in the condition information 31 (“ST” corresponding to the tool whose use count is counted by the block processing unit 14) is changed to “2” (life tool) and stored in the storage unit 12 (step S206).

  When “ST” in the setting condition information 31 of the storage unit 12 is set to “2”, the warning processing unit 16 executes warning processing by transmitting a warning message to an external device, outputting a warning sound, or the like ( Step S207). In addition, when a plurality of tools of the same type are prepared as spares, the tools may be changed to the same type of tools instead of a warning message or the like.

  As described above, according to the embodiment, it is possible to register a G code command for counting the number of times the tool is used for each tool by parameter setting, so that a tool life management target command can be easily registered with a simple configuration. Is possible. Therefore, it is possible to accurately manage information on tool usage with a simple configuration based on the command for tool life management.

  In addition, since a plurality of G codes that specify a drilling operation or the like are registered for each tool using parameters, tool life management can be performed without changing a ladder program or system software for managing tool life. Therefore, it is possible to flexibly cope with the change of the machining program 33 and to easily manage the tool life.

  In addition, when G codes such as drilling operations are implemented in a fixed cycle, etc., parameters can be used to properly count the number of times the tool is used even when multiple drilling operations are performed with one fixed cycle program. Since (additional conditions) can be set, tool life management can be performed even in a drilling command described in a fixed cycle program or a macro program. Therefore, detailed tool life management is possible even for fixed cycle programs and macro programs.

Further, the present invention may be applied to a combination of a fixed cycle such as G74 and G84 and a bottle circle called a special fixed cycle such as G34, G35, G36, and G37.1. The G74 command here is a reverse tap cycle, and only the forward rotation (18) and reverse rotation (15) of the spindle are different from the G84 command (synchronous tap cycle) described in FIG. The specific operation of the G74 command is to position the X axis = x1 and the Y axis = y1 by the G00 command and to position the Z axis = r1 by the G00 command. Then, cutting feed (drilling processing) is performed at a feed speed of f1 to the position of Z axis = z1 by the G01 command, and stopped at the hole bottom position by the dwell time of p1 by the G04 command. After that, the spindle is rotated forward by the M03 command, and the cutting feed is performed at the feed speed of f1 to the position of the Z axis = −z1 by the G01 command, and is stopped at the hole bottom position by the dwell time of p1 by the G04 command. Then, the spindle is rotated in reverse by the M04 command, and processing in the G98 mode or G99 mode is performed.
.

  The G35 command here is a right angle and is used in combination with a fixed cycle such as the G84 command. Specifically, the G35 command is a command to process n holes at intervals d in the direction that forms an angle θ with the X axis, with X and Y as starting point coordinates.

  Further, the G36 command here is an arc, and is used in combination with a fixed cycle such as the G84 command. Specifically, the G36 command specifies n points arranged at an angular interval Δθ starting from a point that forms an angle θ with the X axis on the circumference of a radius r centered on coordinates specified by X and Y. It is a command to process the drilling.

  As described above, the tool life management apparatus according to the present invention is suitable for managing the tool life when a fixed cycle such as G84 and a special fixed cycle such as G37.1 are combined.

It is explanatory drawing for demonstrating the concept of the information management apparatus concerning Embodiment. It is a figure for demonstrating a synchronous tap command. It is explanatory drawing for demonstrating a grid-shaped drilling process. It is a figure which shows an example of the program of the grid-shaped drilling process by G37.1 instruction | command. It is a figure which shows an example of the program which expand | deployed G37.1. It is a block diagram which shows the structure of the information management apparatus concerning embodiment. It is a figure which shows an example of setting condition information. It is a flowchart which shows the procedure of the count setting of the tool usage frequency. It is a flowchart which shows the procedure of the count process of the tool usage frequency.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information management apparatus 11 Input part 12 Storage part 13 Analysis / setting part 14 Block processing part 15 Tool life determination part 16 Warning processing part 17 Drive control part 21 Life management object flag 22 Additional condition setting flag 31 Setting condition information 33 Machining program 51 Program 60 Life management data

Claims (3)

In a tool life management device that controls a predetermined device based on a program described in a control command code and manages the number of uses for each tool used in the predetermined device based on the program as a tool life,
A tool life management apparatus, comprising: a count processing unit that counts the number of times the tool is used from the program based on additional condition information specifying a predetermined machining condition and the control command code. A storage unit for storing the first identification information associated with the predetermined control command code and the additional condition information;
The count processing unit, based on the first identification information and additional condition information stored in the storage unit, the control command code and the processing condition corresponding to the first identification information and additional condition information from within the program The tool life management apparatus according to claim 1, wherein when the control command code and machining conditions are extracted, the number of times the tool is used is counted. 3. The tool life management apparatus according to claim 1, wherein the additional condition information includes command information relating to cutting movement of the tool and / or command information relating to a rotation direction of the spindle of the tool as the machining condition. .

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