Tool Management System for Machine Tools

Abstract

A tool management system for a machine tool is provided, which can determine the appropriate replacement period of the tool used in the machine tool. The tool management system includes at least one of a vibration detection unit, a sound detection unit, and a servo motor current value detection unit, wherein the vibration detection unit is installed on a spindle of the machine tool for supporting the tool and is used to detect vibration, the sound detection unit is arranged near the spindle and is used to detect sound waves generated during the operation of the machine tool, and the servo motor current value detection unit is used to detect the current value of the servo motor of the driving device of the machine tool, and further includes: a tool replacement determination unit, which determines whether the tool needs to be replaced based on information related to the detection value of at least one of the vibration, sound wave, and current value detected during the operation of the machine tool; and a detection start and end instruction setting unit, which is used to add instructions for the detection start point and detection end point of at least one of the vibration, sound wave, and current value of the servo motor in the machining program.

Description

Technical Field

[0001] The invention relates to a tool management system for a machine tool. Background Art

[0002] In the past, CNC (Computerized Numerical Control) technology was applied to machine tools such as NC lathes and machining centers, and the amount of tool movement and speed were numerically controlled by computers, thereby highly automating the repetition of the same machining process and the machining of complex shapes. In addition, the data produced by CAD and CAM are taken into CNC, and various data such as options, parameters, NC programs, macro programs, macro variables, workpiece origin offsets, tool offsets, tool shape data, and tool management data are input for control, thereby automating the machine tool from design to manufacturing.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-103284 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] On the other hand, generally speaking, tools, which are consumables, have a specific service life time set for each tool type, and are replaced when the total processing time reaches the set time.

[0008] However, the appropriate service life is determined by a combination of factors such as "type of tool", "shape of processing object", "quality of processing object", "processing conditions", etc., and it is difficult to determine it uniformly.

[0009] In this regard, a method of determining the replacement period of a tool by confirming and estimating the wear state of the tool, the processing accuracy, etc. for each processing machine has also been proposed and put into practical use (for example, see Patent Document 1). However, the determined life time still varies depending on the type of processing and the distribution of the types of processing, so it needs to be re-evaluated. Therefore, a method for determining an appropriate replacement period of a tool is strongly desired.

[0010] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tool management system for machine tools that can determine an appropriate replacement timing for a tool used in the machine tool.

[0011] Solutions for solving problems

[0012] The inventors of the present invention have found a method capable of determining an appropriate replacement timing of a tool used in a machine tool, and have completed the present invention.

[0013] (1) The present invention is characterized in that it comprises at least one of a vibration detector (e.g., a vibration detector 10 described later), a sound detector (e.g., a sound detector 12 described later), and a servo motor current value detector (e.g., a servo motor current value detector 13 described later), wherein the vibration detector is mounted on a spindle (e.g., a spindle 2 described later) of a machine tool (e.g., a machine tool 1 described later) for supporting a tool (e.g., a tool 3 described later) and is used to detect vibration, the sound detector is disposed near the spindle and is used to detect sound waves generated during operation of the machine tool, and the servo motor current value detector is used to detect the servo current of a drive device (e.g., a drive device 6 described later) of the machine tool. The present invention also comprises: a tool replacement determination unit (such as a tool replacement determination unit 11 described later), which determines whether the tool needs to be replaced based on information related to the detection value of at least one of the vibration detected by the vibration detection unit, the sound wave detected by the sound detection unit and the current value detected by the servo motor current value detection unit during the operation of the machine tool; and a detection start and end instruction setting unit (such as a detection start and end instruction setting unit 16 described later), which is used to add instructions for the detection start point and detection end point of at least one of the vibration, the sound wave and the current value of the servo motor in the machining program.

[0014] (2) The present invention may also be that in the above (1), an M code is provided in the processing program, and the M code is used to indicate or set the detection start point and the detection end point of at least one of the vibration, the sound wave and the current value of the servo motor, and the detection start and end instruction setting unit sets the detection start point and the detection end point according to the indication or setting of the M code for the auxiliary function used for processing.

[0015] (3) The present invention may also be that in the above (1) or (2), it further comprises: a tool determination result display unit (for example, the tool determination result display unit 18 described later), which makes the result obtained by comparing the vibration, the sound wave and at least one of the current values ​​of the servo motor detected during the operation of the machine tool with the predetermined threshold value be reflected in the tool list for display; and a warning unit (for example, the warning unit 19 described later), which issues a warning when it is determined that the tool needs to be replaced.

[0016] (4) The present invention may also be that in any one of the above (1) to (3), a plurality of machine tools are set up in a factory, and the present invention further comprises: a factory centralized management screen display unit (for example, the factory centralized management screen display unit 21 described later), when the tool replacement determination unit determines that the tool needs to be replaced, the factory centralized management screen display unit displays the machine tool having the tool that needs to be replaced on the factory centralized management screen; and a machine tool screen display unit (for example, the machine tool screen display unit 22 described later), which is set for the machine tool having the tool that needs to be replaced and is used to indicate that the tool needs to be replaced.

[0017] (5) The present invention may also be that in any one of the above (1) to (4), it further comprises: a detection information file forming unit (for example, the detection information file forming unit 23 described later), which creates a file that associates the detection results of at least one of the vibration, the sound wave and the current value of the servo motor with tool data and processing information; and a file output unit (for example, the file output unit 24 described later), which outputs the file created by the detection information file forming unit to the outside.

[0018] Effects of the Invention

[0019] According to the present invention, it is possible to determine an appropriate replacement timing for a tool used in a machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram showing a machine tool and a tool management system for the machine tool according to one embodiment of the present invention.

[0021] Figure 2 This is a block diagram showing a tool management system for a machine tool according to one embodiment of the present invention.

[0022] Description of Reference Numerals

[0023] 1: machine tool; 2: spindle; 3: tool; 4: servo motor; 5: feed axis; 6: drive device; 10: vibration detection unit (detection unit); 11: tool change judgment unit; 12: sound detection unit (detection unit); 13: servo motor current value detection unit (detection unit); 15: storage unit; 16: detection start and end instruction setting unit; 18: tool judgment result display unit; 19: warning unit; 20: centralized management unit; 21: factory centralized management screen display unit; 22: machine tool screen display unit; 23: detection information file forming unit; 24: file output unit; 25: first control unit; 26: second control unit; 27: third control unit; 30: control device (control system); A: tool management system of machine tool; W: workpiece. DETAILED DESCRIPTION

[0024] Below, refer to Figure 1 and Figure 2 A tool management system for a machine tool according to an embodiment of the present invention will be described.

[0025] Here, the present embodiment relates to a tool management system for machine tools that can determine an appropriate replacement timing for a tool used in the machine tool.

[0026] Specifically, first, the machine tool 1 of this embodiment is a machine tool such as an NC lathe, a machining center, etc. Figure 1 As shown, for example, it is constructed to include: a spindle 2, which is arranged in a manner so that the axis O1 is oriented in the up-down direction; a rotation drive unit (spindle motor: not shown) for rotating the spindle 2 around the axis O1; a tool 3, which is mounted on the spindle 2; a drive device 6, which uses a servo motor 4 to rotate the feed axis 5 forward and reverse around the axis O2 extending in the up-down direction and to move the spindle 2 forward and backward in the up-down direction, so as to position the spindle 2 and then the tool 3; a mounting table 7, which is arranged below the spindle 2 and the tool 3 in a manner so that a workpiece W as a processing object can be fixed and supported on the upper surface and can be moved relative to the spindle 2 and the tool 3 in the up-down direction (Z) and the front-back direction (lateral direction: XY); and a tool management system A for the machine tool.

[0027] The tool 3 is coaxial with the axis O1 of the spindle 2 and is connected to the spindle 2 via the holder 8 in a manner that allows for loading and unloading. In addition, in the present embodiment, the spindle 2 is configured to rotate around the axis O1, but the present invention is not limited thereto. For example, the tool 3 may be configured to include a substantially cylindrical spindle configured so that the axis O1 is oriented in the up-down direction, a rotating shaft supported by a bearing so as to be rotatable around the axis O1 inside the spindle, and a rotating drive unit for rotationally driving the rotating shaft, and the tool 3 is connected to the rotating shaft via the holder 8 in a manner that allows for loading and unloading, thereby mounting the tool 3 on the spindle.

[0028] On the other hand, Figure 1 and Figure 2 As shown, the tool management system A of the machine tool of this embodiment comprises: a vibration detection unit (vibration sensor: detection unit) 10, which is installed on the main shaft 2 for supporting the tool 3 and is used to detect vibration; and a tool replacement determination unit 11, which compares the vibration detected by the vibration detection unit 10 during the operation of the machine tool 1 with a preset vibration threshold (reference value) to determine whether the tool 3 needs to be replaced (life, wear state, degradation state).

[0029] In addition, there is also a sound detection unit (sound sensor: detection unit) 12, which is arranged near the main spindle 2 and is used to detect the sound waves (sound) generated when the workpiece W as the processing object is processed by the tool 3. The tool replacement determination unit 11 compares the sound waves detected by the sound detection unit 12 during the operation of the machine tool 1 with a preset sound wave threshold (reference value) to determine whether the tool 3 needs to be replaced.

[0030] In addition, there is also a servo motor current value detection unit (detection unit) 13 for detecting the current value of the servo motor 4. The tool replacement determination unit 11 compares the current value detected by the servo motor current value detection unit 13 during the operation of the machine tool 1 with a preset current value threshold (reference value) to determine whether the tool 3 needs to be replaced.

[0031] The tool management system A for machine tools further includes a storage unit 15 for storing the detected vibrations, sound waves, and current values, and for storing threshold values ​​of the vibrations, sound waves, and current values.

[0032] That is, in the tool management system A of the machine tool of the present embodiment, the tool replacement determination unit 11 is configured to determine whether the tool 3 needs to be replaced based on information data such as vibration, sound waves, current values ​​detected by the vibration detection unit 10, the sound detection unit 12 and the servo motor current value detection unit 13 during the operation of the machine tool 1 and the threshold values ​​stored in the storage unit 15.

[0033] In addition, in the present invention, it is sufficient to be configured to include at least one of the vibration detection unit 10, the sound detection unit 12, and the servo motor current value detection unit 13, and to have the tool replacement determination unit 11 determine whether the tool 3 needs to be replaced. In addition, the "nearby of the spindle 2" in the present invention means an area centered on the spindle 2 where the sound wave can be detected by the sound detection unit 12 and whether the tool 3 needs to be replaced can be determined based on the detected sound wave.

[0034] The tool management system A of the machine tool of the present embodiment also comprises: a detection start and end instruction setting unit 16, which is used to add instructions for the detection start point and detection end point of at least one of the vibration, sound waves and the current value of the servo motor in the processing program (for indication / setting); a tool judgment result display unit 18, which makes the result obtained by comparing at least one of the vibration, sound waves and the current value of the servo motor detected during the operation of the machine tool 1 with a preset threshold value be reflected in the tool list stored in the storage unit 15 for display; and a warning unit 19, which issues a warning when it is determined that the tool 3 needs to be replaced.

[0035] In the present embodiment, for example, an M code for performing auxiliary functions for machining includes an M code for indicating / setting a detection start point and a detection end point for at least one of vibration, sound waves, and a servomotor current value.

[0036] Moreover, the detection start and end instruction setting unit 16 is configured to add the detection start point and the detection end point to the machining program according to the instruction / setting of the M code when an M code for indicating / setting the detection start point and the detection end point of at least one of vibration, sound wave and the current value of the servo motor is selected.

[0037] By using M codes as a unit for indicating / setting the detection start point and detection end point in this way, and by appropriately using macros (variables, operation instructions, conditional branches, etc.) in combination, the operator can freely start and end measurement in the machining program, and can automatically measure at least one of vibration, sound waves, and the current value of the servo motor whenever machining is performed using the machining program to be measured.

[0038] In other words, for example, in the field of numerical control of machine tools, by using the conventionally used M code as a means for instructing / setting the detection start point and the detection end point, application to a machining program can be easily performed.

[0039] Furthermore, the tool management system for a machine tool according to the present invention is not necessarily limited to using M codes as means for instructing / setting the detection start point and the detection end point.

[0040] For example, the detection start point and the detection end point may be instructed / set by using a macro function (macro variable, etc.), etc. In addition, an M code and a macro function may be used together.

[0041] That is, in addition to the M code, macro variables for measurement may be prepared, and the detection start may be set to 1 and the detection end may be set to 0. In addition, such a program may be subroutine-like and called.

[0042] However, when using a method other than M code, it is necessary to prepare logic separately, which may require a lot of effort when creating a program. In addition, readability may also be reduced.

[0043] In the present embodiment, a plurality of machine tools 1 are arranged in a factory, and these plurality of machine tools 1 are centrally managed by a centralized management unit 20 in a centralized management room. The tool management system A for the machine tools also comprises: a factory centralized management screen display unit 21. When the tool replacement determination unit 11 determines that the tool 3 needs to be replaced, the factory centralized management screen display unit 21 displays the machine tool 1 having the tool 3 that needs to be replaced on the factory centralized management screen; and a machine tool screen display unit 22, which is arranged on the side of the machine tool 1 having the tool 3 that needs to be replaced, and is used to display the need to replace the tool 3.

[0044] The tool management system A of the machine tool also includes: a detection information file forming unit 23, which creates a file that associates the detection results of at least one of vibration, sound waves and current values ​​of the servo motor with the tool data and processing information stored in the storage unit 15; and a file output unit 24, which outputs the file created by the detection information file forming unit 23 to the outside.

[0045] In addition, the outside as the file output destination refers to, for example, a factory centralized management room, a machine tool side, etc.

[0046] Here, in the machine tool 1 of the present embodiment, there is a control device (control system) 30, which has: a first control unit (for example, a numerical control device (CNC)) 25, which is used to control the machine tool body (machine tool); a second control unit (for example, PMC) 26, which outputs a signal to an auxiliary device of the machine tool body (for example, an automatic tool changing device, etc.) via an I / O unit through a sequence program built into the numerical control device to control the auxiliary device of the machine tool body; and a third control unit (external controller) 27, which determines whether the tool 3 needs to be replaced, etc. based on the vibration, sound wave, and current value detected by the vibration detection unit 10, the sound detection unit 12, and the servo motor current value detection unit 13 during the operation of the machine tool 1.

[0047] In the tool management system A of the machine tool of the present embodiment, for example, a detection start and end command setting unit 16 is provided in the first control unit 25. A tool determination result display unit 18, a warning unit 19, a machine tool screen display unit 22, a detection information file forming unit 23, a file output unit 24, and a storage unit 15 for storing vibration, sound wave, and current values ​​and storing threshold values ​​of vibration, sound wave, and current values ​​are provided in the second control unit 26. A tool replacement determination unit 11 is provided in the third control unit 27.

[0048] In addition, the control device 30 does not necessarily need to independently include the first control unit 25, the second control unit 26, and the third control unit 27. In addition, the means (units) provided in each of the control units 25, 26, and 27 do not need to be limited as described above.

[0049] Moreover, in the tool management system A of the machine tool of this embodiment constituted by the above-mentioned structure, the operator etc. use the detection start and end instruction setting unit 16 of the first control unit 25 to set the M code of the detection start point and the M code of the detection end point of the vibration or sound wave and the current value of the servo motor in the processing program.

[0050] The indication / setting of the M code of the detection start point and the M code of the detection end point are notified to the second control unit 26, and the second control unit 26 determines and extracts information such as the machine tool number, program number, sequence number, tool number (tool list), spindle 2, etc., information related to the vibration, sound waves, and current values ​​corresponding to the information, and reference data such as files created in the past that associate tool data and processing information with vibration, sound waves, and current values ​​in the storage unit 15. The tool replacement determination unit 11 of the third control unit 27 can obtain this information (download it, etc.) and establish a measurement start mark, and the vibration detection unit 10, sound detection unit 12, and servo motor current value detection unit 13 begin to detect and measure vibration, sound, and current values.

[0051] At this time, if the tool replacement determination unit 11 of the third control unit 27 can obtain this information and start measurement, the third control unit 27 will notify the second control unit 26 that the measurement can be started, and establish an OK mark. In the case where the downloading, etc. are not successfully completed and the measurement cannot be started, the third control unit 27 will notify the second control unit 26 that the measurement cannot be started, and establish an NG mark. Thus, at the stage where the OK mark is confirmed by the second control unit 26, the first control unit 25 controls to start processing. In addition, when the NG mark is established in the second control unit 26, the warning unit 19 displays a PMC alarm, or issues a warning (alarm) such as lighting a warning light, so that the operator and the like can recognize that the NG mark has been established.

[0052] On the other hand, the tool replacement determination unit 11 of the third control unit 27 compares the measurement data (input data) of vibration, sound waves and servo motor current values ​​measured by the vibration detection unit 10, the sound detection unit 12 and the servo motor current value detection unit 13 during the operation of the machine tool 1 with the reference data (threshold value, reference value), etc. If the threshold value is exceeded, it is determined that the tool 3 is abnormal, and this is notified to the second control unit 26 and the first control unit 25.

[0053] At the same time, the operation of the machine tool 1 is stopped, and the warning unit 19 displays a PMC alarm or issues a warning such as lighting a warning lamp, so that the operator or the like can recognize that the tool 3 is abnormal.

[0054] If the detection end point is reached without exceeding the threshold, the first control unit 25 notifies the second control unit 26 of the end of measurement, and the OK flag and the NG flag are cleared.

[0055] When an abnormality occurs in the tool 3, or when the detection end point is reached without exceeding the threshold value, the detection information file forming unit 23 creates a file and a tool file (including overwriting) that associate the detection results of vibration, sound waves, and the current value of the servo motor with the tool data and processing information at the stage of measurement end, and stores the file and the tool file in the storage unit 15. In addition, in the present embodiment, the file created by the detection information file forming unit 23 is output to the outside.

[0056] In addition, when the tool replacement determination unit 11 determines that the tool 3 needs to be replaced, the factory centralized management screen display unit 21 displays the machine tool 1 having the tool 3 that needs to be replaced on the factory centralized management screen. In addition, the machine tool screen display unit 22 of the second control unit 26 displays that the tool 3 needs to be replaced for the machine tool 1 having the tool 3 that needs to be replaced.

[0057] Therefore, in the tool management system A for machine tools of the present embodiment, it is possible to determine an appropriate replacement timing for a tool used in the machine tool 1 based on the detection result of at least one of vibration, sound wave, and current value of the servo motor.

[0058] Furthermore, by appropriately combining the three detection elements of vibration, sound wave, and servo motor current value, abnormality of the tool 3 can be detected with high accuracy, and the replacement timing of the tool 3 used in the machine tool 1 can be determined more accurately.

[0059] Here, not only when an abnormality occurs in the tool 3, for example, when an abnormality occurs in the workpiece W or when an abnormality occurs in the mechanism of the machine tool 1, the vibration, sound wave, and current value detected by the vibration detection unit 10, the sound detection unit 12, and the servo motor current value detection unit 13 during the operation of the machine tool 1 may also exceed the threshold.

[0060] In this regard, in the tool management system A of the machine tool of the present embodiment, instead of simply detecting vibration, sound waves, and the current value of the servo motor and estimating and predicting abnormality based on these detected values, when a threshold value is exceeded, based on the information on abnormality of the workpiece W and the information on abnormality of the mechanism stored in the storage unit 15, the measured data of the detected vibration, sound waves, and current value are compared with the data on abnormality of the workpiece W and abnormality of the mechanism of the machine tool 1, to determine whether the vibration waveform, sound waveform, and current value waveform are the waveforms when the tool 3 is abnormal, and the tool replacement determination unit 11 determines whether the tool 3 needs to be replaced based on this. In this way, the appropriate replacement time of the tool 3 can be determined with high accuracy.

[0061] In the tool management system A for machine tools of the present embodiment, the detection start and end command setting unit 16 can add detection start and end point commands to the machining program, so that the tool 3 can be determined at an appropriate timing during the operation of the machine tool 1 .

[0062] Specifically, for example, the detection start and end command setting unit 16 can add detection start and end point commands to the machining program, thereby enabling measurement to be started at the machining start position on any machining path that is susceptible to tool wear due to the rigidity of the workpiece W, the structure of the jig, etc., and to be ended at the machining end position. This can also reduce machining defects caused by tool wear. In addition, it is possible to obtain data only at necessary locations, so that accurate judgments can be made. That is, highly reliable judgments can be made.

[0063] In addition, in the tool management system A of the machine tool of the present embodiment, M codes (or macro variables, etc.) are used to indicate / set the detection start point and detection end point of vibration, sound wave, and current value. As a result, the operator can freely set the start and end of the measurement in the processing program. In addition, whenever the processing is performed using the processing program to be measured, the measurement can be automatically performed. Moreover, it can be simply applied to the program, there is no need to prepare logic separately, the creation of the program will not become difficult, and the readability can be properly maintained and ensured.

[0064] Furthermore, in the tool management system A for machine tools of the present embodiment, the tool determination result display unit 18 can reflect the result obtained by comparing the vibration, sound wave, and current value of the servo motor detected during the operation of the machine tool 1 with a preset threshold value in the tool list for display. The warning unit 19 can reliably allow the operator or the like to recognize that the tool 3 needs to be replaced.

[0065] Furthermore, by checking the tool list, the operator or the like can determine in advance to what extent the tool 3 has deteriorated, whether it is likely to exceed a threshold value when used in the next machining, and the like.

[0066] Furthermore, when the tool replacement determination unit 11 determines that the tool 3 needs to be replaced, the factory centralized management screen display unit 21 can display the machine tool 1 having the tool 3 that needs to be replaced on the factory centralized management screen. The machine tool screen display unit 22 can display that the tool 3 needs to be replaced on the machine tool 1 side having the tool 3 that needs to be replaced.

[0067] This enables efficient and effective tool management.

[0068] The detection information file generator 23 can generate a file that associates the detection results of vibration, sound wave, and servo motor current value with tool data and processing information. The file output unit 24 can output the file generated by the detection information file generator 23 to the outside.

[0069] Thus, by checking the file, the operator or the like can determine in advance the extent of deterioration of the tool 3 and whether it is likely to exceed a threshold value when used in the next machining, thereby enabling more efficient and effective tool management.

[0070] Thus, according to the tool management system A for machine tools of the present embodiment, it is possible to automatically determine an appropriate replacement time for the tool 3 used in the machine tool 1, and it is possible to efficiently and effectively suppress the generation of defective products, thereby improving the manufacturing yield.

[0071] An embodiment of the tool management system for a machine tool according to the present invention has been described above, but the present invention is not limited to the above-described embodiment and can be modified as appropriate within the scope of the present invention.

Claims

1. A tool management system for a machine tool, comprising at least one of a vibration detection unit, a sound detection unit, and a servo motor current value detection unit, in, The vibration detection unit is installed on a main shaft of a machine tool for supporting a tool, and is used to detect vibration. The sound detection unit is arranged near the spindle and is used to detect sound waves generated during the operation of the machine tool. The servo motor current value detection unit is used to detect the current value of the servo motor of the driving device of the machine tool. In addition, the tool management system of the machine tool further comprises: a tool replacement determination unit that determines whether the tool needs to be replaced based on information about at least one of the vibration detected by the vibration detection unit, the sound wave detected by the sound detection unit, and the current value detected by the servo motor current value detection unit during operation of the machine tool; and a detection start and end instruction setting unit for adding, in a machining program, instructions for detecting a start point and an end point of at least one of the vibration, the sound wave, and the current value of the servo motor, The tool replacement determination unit: comparing at least one of the vibration, the sound wave, and the current value detected during the operation of the machine tool with a preset threshold value; When at least one of the vibration, the sound wave, and the current value exceeds the preset threshold value, at least one of the vibration, the sound wave, and the current value detected during the operation of the machine tool is compared with at least one of the vibration, the sound wave, and the current value detected when an abnormality occurs in the workpiece, and at least one of the vibration, the sound wave, and the current value detected during the operation of the machine tool is compared with at least one of the vibration, the sound wave, and the current value detected when an abnormality occurs in the mechanism of the machine tool, so as to determine whether the waveform corresponding to at least one of the vibration, the sound wave, and the current value detected during the operation of the machine tool is at least one of the vibration waveform, the sound waveform, and the current value waveform when an abnormality occurs in the tool; According to the determination result, it is determined whether the tool needs to be replaced.

2. The tool management system for a machine tool according to claim 1, wherein: The machining program includes an M code for indicating or setting a detection start point and a detection end point of at least one of the vibration, the sound wave, and the current value of the servo motor. The detection start and end command setting unit sets the detection start point and the detection end point according to an instruction or setting of the M code for performing an auxiliary function of machining.

3. The tool management system for a machine tool according to claim 1, further comprising: a tool determination result display unit that displays a result of comparing at least one of the vibration, the sound wave, and the current value of the servo motor detected during the operation of the machine tool with the preset threshold value by reflecting it in a tool list; and The warning unit issues a warning when it is determined that the tool needs to be replaced.

4. The tool management system for a machine tool according to claim 2, further comprising: a tool determination result display unit that displays a result of comparing at least one of the vibration, the sound wave, and the current value of the servo motor detected during the operation of the machine tool with the preset threshold value by reflecting it in a tool list; and The warning unit issues a warning when it is determined that the tool needs to be replaced.

5. The tool management system for a machine tool according to any one of claims 1 to 4, wherein: Setting up multiple machine tools in a factory, The tool management system of the machine tool also has: a factory centralized management screen display unit, which displays the machine tool having the tool to be replaced on a factory centralized management screen when the tool replacement determination unit determines that the tool needs to be replaced; as well as The machine tool screen display unit is provided for the machine tool having the tool that needs to be replaced, and is used to indicate that the tool needs to be replaced.

6. The tool management system for a machine tool according to any one of claims 1 to 4, further comprising: a detection information file forming unit that creates a file that associates a detection result of at least one of the vibration, the sound wave, and the current value of the servo motor with tool data and processing information; and A file output unit outputs the file created by the detection information file forming unit to the outside.

7. The tool management system for a machine tool according to claim 5, further comprising: a detection information file forming unit that creates a file that associates a detection result of at least one of the vibration, the sound wave, and the current value of the servo motor with tool data and processing information; and A file output unit outputs the file created by the detection information file forming unit to the outside.

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