Management device, control method for management device, program used therefor, and cutting system

Abstract

The management device relates to a management device that manages the state of a milling tool. The management device includes a communication device, a processing device, and a display device. The communication device receives sensor information from a sensor mounted on the milling tool. The processing device calculates the cutting resistance of the milling tool during milling from the sensor information received by the communication device. The display device displays the calculated cutting resistance. During milling, the processing device displays time series data of a first component of the cutting resistance during milling on the display device. The first component is a component of the cutting resistance in the direction of the rotation axis of the milling tool.

Description

[Technical Field]

[0001] The present disclosure relates to a management device, a control method for the management device, a program used therefor, and a cutting system. [Background technology]

[0002] Japanese Patent Application Laid-Open No. 2018-54611 (Patent Document 1) discloses a vibration measuring device for a rotary tool held by a tool holder. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-54611 Summary of the Invention

[0004] The management device according to the present disclosure relates to a management device that manages the state of a milling tool. The management device includes a communication device, a processing device, and a display device. The communication device receives sensor information from a sensor mounted on the milling tool. The processing device calculates the cutting resistance of the milling tool during milling from the sensor information received by the communication device. The display device displays the calculated cutting resistance. During milling, the processing device displays time-series data of a first component of the cutting resistance during milling on the display device. The first component is a component of the cutting resistance in the direction of the rotation axis of the milling tool.

[0005] The present disclosure relates to a control method for a management device for managing the state of a milling tool. The control method includes the steps of (a) receiving sensor information from a sensor mounted on the milling tool, (b) calculating the cutting resistance of the milling tool during milling from the sensor information, and (c) displaying time-series data of a first component of the cutting resistance during milling. The first component is a component of the cutting resistance in the direction of the rotation axis of the milling tool.

[0006] A program according to the present disclosure is a program for causing a processing device included in a management device that manages the state of a milling tool to execute the following method. The method includes the steps of (a) receiving sensor information from a sensor mounted on the milling tool, (b) calculating the cutting resistance of the milling tool during milling from the sensor information, and (c) displaying time-series data of a first component of the cutting resistance during milling. The first component is the component of the cutting resistance in the direction of the rotation axis of the milling tool. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing an outline of a cutting system in which a management device according to the present embodiment is used. [Figure 2] FIG. 2 is a diagram showing a milling tool having a shaft portion attached to a tool holder. [Figure 3] FIG. 3 is a diagram showing the arrangement of sensors when the milling tool is viewed from the positive direction of the Z axis. [Figure 4] FIG. 4 is a first example of a screen displayed on the display device of the management device. [Figure 5] FIG. 5 is a second example of a screen displayed on the display device of the management device. [Figure 6] FIG. 6 is a flowchart for explaining a cutting tool state display process executed by the management device. [Figure 7] FIG. 7 shows a modified milling tool. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Problem to be solved by this disclosure] An object of the present disclosure is to provide a management device and a cutting system that are capable of observing the state of a cutting tool in real time based on information from a sensor attached to the cutting tool.

[0009] [Effects of this disclosure] According to the present disclosure, it is possible to provide a management device and a cutting system that are capable of observing the state of a cutting tool in real time based on information from a sensor attached to the cutting tool.

[0010] [Outline of the embodiment] First, embodiments of the present disclosure will be listed and described.

[0011] (1) The management device 200 according to the present disclosure relates to a management device that manages the state of the milling tool 100. The management device 200 includes a communication device 210, a processing device 220, and a display device 260. The communication device 210 receives sensor information from a sensor 120 mounted on the milling tool 100. The processing device 220 calculates the cutting resistance of the milling tool 100 during milling from the sensor information received by the communication device 210. The display device 260 displays the calculated cutting resistance. During milling, the processing device 220 displays time-series data of a first component of the cutting resistance during milling on the display device 260. The first component is a component of the cutting resistance in the direction of the rotation axis of the milling tool 100.

[0012] (2) In the management device 200 according to (1) above, the processing device 220 further displays time-series data of the second and third components of the cutting resistance during milling on the display device 260. The second and third components are components of the cutting resistance corresponding to two directions that intersect with each other on a plane perpendicular to the rotation axis of the milling tool 100. (3) The management device 200 according to (1) or (2) above further includes a storage device 230 that stores comparison data on cutting resistance. The processing device 220 displays data on the first data corresponding to the first component in the comparison data on the display device 260, superimposed on the first component.

[0013] (4) In the management device 200 according to (3) above, the processing device 220 displays the time-series data of the first data on the display device 260.

[0014] (5) In the management device 200 according to (4) above, the processing device 220 displays the first data on the display device 260 so that the processing start point in the first component coincides with the processing start point in the first data.

[0015] (6) In the management device 200 according to (5) above, the processing device 220 determines the time when the corresponding data exceeds the reference value as the processing start point.

[0016] (7) In the management device 200 according to (5) above, the processing device 220 determines the time when the amount of fluctuation in the corresponding data exceeds a threshold value as the processing start point.

[0017] (8) In the management device 200 described in any one of (4) to (7) above, the processing device 220 acquires information on the feed rate of the milling tool during milling. If the feed rate in the comparison data differs from the feed rate during milling, the processing device 220 corrects the time axis of the first data so that the feed rate in the comparison data corresponds to the feed rate during milling.

[0018] (9) In the management device 200 according to (3) above, the processing device 220 displays statistics of the first data on the display device 260. The statistics include at least one of a maximum value, a minimum value, an average value, and a standard deviation.

[0019] (10) A cutting system 50 according to the present disclosure includes the management device 200 described in any one of (1) to (9) above, and a milling tool 100 equipped with a sensor 120.

[0020] (11) A control method for a management device 200 according to the present disclosure relates to a control method for a management device 200 that manages the state of a milling tool 100. The control method includes the steps of (a) receiving sensor information from a sensor 120 mounted on the milling tool 100, (b) calculating the cutting resistance of the milling tool 100 during milling from the sensor information, and (c) displaying time-series data of a first component of the cutting resistance during milling. The first component is a component of the cutting resistance in the direction of the rotation axis of the milling tool 100.

[0021] (12) A program according to the present disclosure is a program for causing a processing device 220 included in a management device 200 that manages the state of a milling tool 100 to execute the following method. The method includes the steps of (a) receiving sensor information from a sensor 120 mounted on the milling tool 100, (b) calculating the cutting resistance of the milling tool 100 during milling from the sensor information, and (c) displaying time-series data of a first component of the cutting resistance during milling. The first component is a component of the cutting resistance in the direction of the rotation axis of the milling tool 100.

[0022] [Details of the embodiment] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, identical or corresponding parts are designated by the same reference numerals, and their description will not be repeated. Furthermore, at least some of the embodiments described below may be combined in any manner.

[0023] (Cutting system overview) Fig. 1 is a diagram showing an overview of a cutting system 50 according to the present embodiment. Referring to Fig. 1, cutting system 50 includes a milling tool 100 and a management device 200. Milling tool 100 is attached to a machine tool 10 such as a machining center or a milling machine, and is used for cutting a workpiece 18 to be cut.

[0024] The machine tool 10 in the example of FIG. 1 is a vertical machining center, and a milling tool 100 is attached to a main shaft (spindle) 14 provided on a head 12 that moves in the vertical direction (Z-axis direction). In FIG. 1, the milling tool 100 includes a shaft portion 106 on which a cutting portion is formed and a tool holder 105 that holds the shaft portion 106, and the tool holder 105 is attached to the machine tool 10. Note that, instead of using the tool holder 105, a configuration may be possible in which the shaft portion 106 equipped with a cutting insert 160 (see FIG. 7) is directly attached to the machine tool 10, as in a modified example described below with reference to FIG. 7. A motor (not shown) arranged on the main shaft 14 rotates the milling tool 100 with the Z-axis direction as the rotation axis.

[0025] The workpiece 18 is placed on a table 16 provided on a bed 20. The table 16 is configured to be movable on the XY plane. The table 16 and the head 12 are moved to change the relative positions of the milling tool 100 and the workpiece 18, and the workpiece 18 is cut by bringing the milling tool 100 into contact with the rotating workpiece 18.

[0026] In Figure 1, a three-axis vertical machining center has been described as an example of machine tool 10, but machine tool 10 may also be a horizontal machining center with the main spindle arranged horizontally, or may have four or more operating axes.

[0027] 2, a plurality of sensors are attached to the milling tool 100. The sensors can detect the force applied to the milling tool 100.

[0028] Management device 200 determines and manages the state of milling tool 100 using detection values ​​of sensors attached to milling tool 100. Management device 200 includes a communication device 210, a CPU (Central Processing Unit) 220 which is a control device, a storage device 230, an input / output interface (I / F) 240, a display device 260, and an input device 270. Note that CPU 220 corresponds to the "processing device" in this disclosure.

[0029] The communication device 210, CPU 220, storage device 230, and input / output I / F 240 are connected to a common bus 250 and configured to be able to send and receive signals among them. The display device 260 and input device 270 are connected to the input / output I / F 240 by wire or wirelessly.

[0030] The communication device 210 is a wireless communication device that wirelessly acquires the detection values ​​of the sensors attached to the tool holder 105. The CPU 220 executes a program stored in the storage device 230, processes the detection values ​​of the sensors acquired by the communication device 210, displays the state of the cutting tool 100 on the display device 260, and determines the state of the cutting tool 100.

[0031] CPU 220 is also configured to be able to communicate with control device 22 included in machine tool 10 via communication device 210. CPU 220 can acquire information from control device 22, such as the machining conditions of workpiece 18 (spindle rotation speed, feed rate, etc.) and the operating status of each device.

[0032] The storage device 230 includes memories such as a read-only memory (ROM) and a random access memory (RAM), as well as a large-capacity storage device such as a hard disk drive (HDD) or a solid state disk (SSD). The storage device 230 is used as a buffer during processing by the CPU 220, and is also used to store programs executed by the CPU 220, detected values ​​of sensors, and / or calculation results by the CPU 220.

[0033] The input device 270 is, for example, a pointing device such as a keyboard, a mouse, a trackball, or a touch panel, and receives operation signals from a user. The display device 260 is typically a liquid crystal panel or an organic EL (Electro Luminescence) panel, and displays the results of calculations by the CPU 220, information stored in the storage device 230, and the like to the user.

[0034] The input / output I / F 240 is an interface for connecting the display device 260 and the input device 270. Through the input / output I / F 240, a user operation signal is received from the input device 270, and information for notifying the user is output to the display device 260.

[0035] (Purpose of this embodiment) The cutting tools used in the above-described machine tools may develop abnormalities such as wear or chipping of the cutting edge during use. When an abnormality occurs in the cutting tool, it may not be possible to properly cut the workpiece to be cut, which may result in a decrease in machining accuracy or damage to the workpiece or the tool itself. To address this issue, a configuration is known, such as that disclosed in Japanese Patent Application Laid-Open No. 2018-54611 (Patent Document 1), that detects abnormal vibrations of the cutting tool during cutting based on acceleration information detected by an acceleration sensor placed on a horizontal plane relative to the rotation axis of the cutting tool, and detects signs of tool damage.

[0036] In the vibration measuring device of Patent Document 1, an acceleration sensor is placed on a horizontal plane (i.e., the XY plane) relative to the rotation axis of the milling tool, and changes in the load applied in the X direction, Y direction, and rotation direction can be detected and displayed. On the other hand, when performing drilling, for example, it is important to observe changes in the load applied in the rotation axis direction, i.e., the thrust direction. In particular, to prevent tool damage, it is necessary to observe the thrust load in real time during milling.

[0037] Therefore, in this embodiment, a method will be described in which the load in the thrust direction is detected from the data of a sensor arranged on a milling tool and displayed in real time.

[0038] (Details of turning tools) Next, details of the milling tool 100 will be described with reference to Figures 2 and 3. Figure 2 is a diagram showing milling tool 100 in which a shaft portion 106 is attached to a tool holder 105. Figure 3 is a diagram showing the arrangement of each sensor when milling tool 100 is viewed from the positive direction of the Z axis.

[0039] The tool holder 105 includes a body 110 that is attached to the spindle 14 of the machine tool 10. One end of the body 110 is attached to the spindle 14. The other end of the body 110 has a shaft portion 106 attached thereto.

[0040] The milling tool 100 is, for example, an end mill, a milling cutter, a drill, a reamer, or a tap, and cuts the workpiece 18 by rotating the tool itself. In FIG. 2 , the milling tool 100 is an end mill, and a cutting portion is provided at a first end 107 of a substantially cylindrical shaft portion 106, and a second end 108 of the shaft portion 106 is attached to a tool holder 105. The cutting portion may be formed on the shaft portion 106, or a removable cutting edge portion may be attached to the shaft portion 106. When a motor (not shown) provided on the spindle 14 is driven, the milling tool 100 rotates clockwise (CW) around the rotation axis CL as viewed from the positive direction of the Z axis, and the cutting portion comes into contact with the workpiece 18, cutting the workpiece 18.

[0041] 3, in the tool holder 105, a plurality of sensors 120 are attached around the shaft portion 106. In this embodiment, the plurality of sensors 120 includes four strain sensors. Note that the plurality of sensors 120 may also be acceleration sensors.

[0042] Additionally, a communication device 140 and a battery 150 are arranged on a board (not shown) in the tool holder 105. The communication device 140 is a wireless communication device powered by the battery 150. The communication device 140 is capable of wireless communication with the communication device 210 of the management device 200, and wirelessly transmits the detection value detected by the sensor 120 to the management device 200.

[0043] The sensor 120 may be attached directly to the shaft portion 106, or may be disposed on a tool holder 105 that is capable of measuring the deformation state of the milling tool 100. For ease of explanation, Fig. 3 will be described with reference to a state in which the sensor 120 is attached directly to the shaft portion 106.

[0044] The four sensors 120 include strain sensors 120A to 120D. Strain sensors 120A to 120D are arranged on concentric circles centered on the rotation axis CL of shaft portion 106 in the same plane normal to the rotation axis CL. Strain sensors 120A to 120D are also arranged on the surface of shaft portion 106 at positions where the centers of the strain sensors are spaced apart by 90° in the circumferential direction. Strain sensors 120A and 120B are arranged point-symmetrically with respect to the rotation axis CL of milling tool 100. Strain sensors 120C and 120D are also arranged point-symmetrically with respect to the rotation axis CL of milling tool 100.

[0045] Some of the strain sensors 120A-120D are arranged to have measurement sensitivity in a direction perpendicular to the main shaft 14, and can detect loads acting in the X, Y, and circumferential directions. Others of the strain sensors 120A-120D are arranged to have measurement sensitivity in a direction along the main shaft 14 (the Z-axis direction), and can detect loads acting in the Z-axis direction.

[0046] As described above, data detected by each sensor is transmitted to management device 200 via communication device 140, processed by CPU 220, and displayed on display device 260. In this embodiment, data related to the loads applied in the X, Y, and Z directions is displayed in real time on management device 200. This makes it possible to determine abnormal conditions during milling and prevent defects such as tool breakage.

[0047] (Screen display example) Next, an example of a monitoring screen displayed on the display device 260 in the management device 200 of this embodiment will be described with reference to FIGS.

[0048] FIG. 4 shows a first example of a display screen 300 displayed on the display device 260 of the management device 200. The display screen 300 includes three display areas: area 310, area 320, and area 330. Area 310 is located in the upper left corner of the screen and displays the cutting resistance Fx (line LN10) in the X direction and the cutting resistance Fy (line LN11) in the Y direction in time series. Area 320 is located in the lower left corner of the screen and displays the cutting resistance Fz (line LN12) in the Z direction in time series. Area 330 is located on the right side of the screen and displays the distribution of cutting resistance in the XY plane. More specifically, area 330 displays the load distribution at each time during milling, with the horizontal axis representing the cutting resistance Fx in the X direction and the vertical axis representing the cutting resistance Fy in the Y direction. Note that each display area can display other data, such as torque data, instead of cutting resistance.

[0049] It is possible to process the detected data and display it in each area after the milling process is completed, but by displaying each data in real time during milling, it is possible to quickly determine any abnormalities in the milling tool, and it is also possible to immediately check whether the milling conditions are appropriate and adjust various parameters, which leads to improved milling quality and a reduction in the defect rate.

[0050] 5 shows a second example of a display screen 300 displayed on the display device 260 of the management device 200. In this display example, area 310 displays cutting resistance Fx (line LN20) and cutting resistance Xy (line LN21). Area 320 displays current cutting resistance Fz (line LN22) and comparison data (line LN23) obtained in the past during other cutting operations for Z-direction cutting resistance Fz. Area 330 also displays the distribution of cutting resistance in the comparison data (white circles) and the distribution of cutting resistance in the cutting resistance data (black circles).

[0051] Here, the comparison data is, for example, data obtained when machining is performed using a tool in a normal state under the same machining conditions, and is stored in advance in the storage device 230 of the management device 200. By displaying such comparison data superimposed on the data during machining, it is possible to visually evaluate the performance of the tool currently in use and / or the damage state of the tool. Therefore, it can be used when evaluating a newly developed tool, when evaluating the durability of a tool, and when diagnosing the deterioration state of a tool.

[0052] Furthermore, data obtained by machining under different machining conditions can also be used as the comparison data. For example, data obtained by changing the feed rate of the tool, data obtained by changing the rotational speed of the tool, data obtained by changing the cutting depth of the tool, or data obtained by changing the presence or absence of cutting oil and the type of cutting oil can be used. Comparing the data during machining with such comparison data makes it easier to set appropriate machining conditions for the workpiece to be machined.

[0053] When using comparison data under different machining conditions, simply overlaying the comparison data on the real-time data currently being processed may not provide accurate evaluation, depending on the parameters of the target machining conditions. For example, if the tool feed rates are different, the total machining times will be different, and simply overlaying the data may result in an inaccurate assessment due to the different machining end points. In such cases, the CPU 220 of the management device 200 corrects the time axis of the comparison data so that the feed rate in the comparison data corresponds to the feed rate during machining, and the comparison data is displayed overlaid on the currently being processed data. By performing this correction process, accurate comparison with the currently being processed data can be achieved even when the machining conditions are different.

[0054] Here, the timing of the machining start points in the comparison data stored in the storage device 230 may not always be the same. Therefore, when displaying the comparison data, the CPU 220 performs processing to match the timing of the machining start point in the comparison data with the timing of the machining start point in the real-time data currently being machined.

[0055] Specifically, the CPU 220 determines the time when the data value exceeds a predetermined reference value at the rise of the data at the start of processing as the processing start point, and displays the comparison data on the display device 260 so that the processing start point determined from the comparison data matches the processing start point determined from the real-time data. By performing such processing, the start positions of the two data matches, making it easy to compare the data.

[0056] The determination of the processing start point is not limited to comparing the absolute value of the data with a reference value; for example, the processing start point may be determined to be the point at which the amount of data fluctuation (or fluctuation range) per unit time exceeds a predetermined threshold value.

[0057] The comparison data may be displayed as time-series data similar to the real-time data being processed, or alternatively or in addition, statistical quantities of the comparison data may be displayed, such as the maximum value, minimum value, average value, standard deviation, and variance of the comparison data.

[0058] As described above, by displaying the cutting resistance Fz in the Z direction during milling in real time, it is possible to quickly determine the condition of the milling tool, and by displaying comparison data in an overlapping manner, it is possible to easily set machining conditions suitable for the workpiece. In this embodiment, only one sensor may be used as long as it can measure at least the cutting resistance Fz in the Z direction.

[0059] It is also possible to display the comparison data for the cutting resistance Fx in the X direction and the cutting resistance Fy in the Y direction. However, since these horizontal loads generally tend to have larger deviations from the average value than the thrust load in the Z direction, the effect of overlaying the comparison data is somewhat smaller.

[0060] (Flowchart of display process) Fig. 6 is a flowchart for explaining the processing for displaying the status of the milling tool 100, which is executed by the management device 200 in the cutting system 50 of this embodiment. The processing shown in Fig. 6 is realized by the CPU 220 in the management device 200 executing a program read from the storage device 230.

[0061] 6, in step (hereinafter, step will be abbreviated as "S") 100, the management device 200 acquires sensor data transmitted from the tool holder 105. Then, the management device 200 calculates cutting resistances Fx, Fy, and Fz based on the measurement data of the sensor 120 (S110), and displays the cutting resistances Fx, Fy, and Fz during machining on the display device 260 in real time (S120).

[0062] Next, in S130, management device 200 determines whether or not the user has requested that the comparison data be displayed. If the user has not requested that the comparison data be displayed (NO in S130), the process proceeds to S140.

[0063] If the user has requested the display of comparison data (YES in S130), the process proceeds to S150, where management device 200 selects comparison data corresponding to the user request from the data stored in storage device 230. When displaying the comparison data in chronological order, management device 200 performs processing for matching the machining start points (start point matching processing) for the selected comparison data (S160), and also performs processing for correcting the feed rate (feed rate correction processing) as necessary (S170). Although not shown in FIG. 6, when displaying statistical values ​​of the comparison data, management device 200 calculates the statistical values ​​to be displayed instead of or in addition to the processing of S160 and S170.

[0064] Thereafter, in S180, management device 200 displays the comparison data (time-series data / statistics) on display device 260, and proceeds to S140.

[0065] In S140, the management device 200 determines whether or not the machining of the workpiece 18 to be machined has been completed. If the machining has not been completed (NO in S140), the process returns to S100, and the management device 200 continues to acquire sensor data during machining and displays the cutting resistances Fx, Fy, Fz and comparison data on the display device 260. On the other hand, if the machining has been completed (YES in S140), the management device 200 maintains the final display state and ends the process.

[0066] By performing control according to this processing, the cutting resistance during machining is displayed in real time together with the comparison data on the display device 260 of the management device 200. This makes it possible to determine the state of the milling tool during machining, and by displaying the comparison data in an overlapping manner, it is possible to easily set machining conditions suitable for the workpiece.

[0067] (Modified example of a milling tool) 7 is a diagram showing a modified milling tool 100A. The milling tool 100A does not include a tool holder like the milling tool 100 of the embodiment, but has a shaft portion attached to a spindle of a machine tool that includes a tool holder.

[0068] Referring to Fig. 7, milling tool 100A includes a shaft portion 106A and a sensor 120 attached to the periphery of shaft portion 106A. Sensor 120 is housed inside a housing 170 provided on shaft portion 106A. Similar to milling tool 100 of the embodiment, sensors 120 are arranged at equal intervals around the circumference of shaft portion 106A. Although not shown in Fig. 7, communication device 140 and battery 150 shown in Fig. 2 are also arranged inside housing 170.

[0069] A replaceable cutting insert (throw-away tip) 160 is attached to a first end 107 of the shaft portion 106A, and a second end 108 of the shaft portion 106A is attached to a spindle 14 of a machine tool 10 having a tool holder.

[0070] In this way, even in the case of a milling tool that is attached to a spindle including a tool holder, by placing a sensor on the shaft portion of the milling tool, the condition of the milling tool can be displayed in real time based on the data from the sensor.

[0071] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0072] 10 machine tool, 12 head, 14 spindle, 16 table, 18 workpiece, 20 bed, 22 control device, 50 cutting system, 100, 100A milling tool, 105 tool holder, 106, 106A shaft portion, 107 first end, 108 second end, 110 main body, 120 sensor, 120A to 120D strain sensor, 140 communication device, 150 battery, 160 cutting insert, 170 housing, 200 management device, 210 communication device, 220 CPU, 230 storage device, 240 input / output interface, 250 bus, 260 display device, 270 input device, 300 display screen, 310 to 330 area, CL rotation axis, Fx, Fy, Fz cutting force.

Claims

1. A management device for managing the state of a cutting tool, a communication device that receives sensor information from a sensor mounted on the milling tool; a processing device that calculates the cutting resistance of the milling tool during milling processing from the sensor information received by the communication device; a display device that displays the calculated cutting resistance; a storage device that stores comparison data regarding the cutting resistance; The processing device includes: During the milling process, time series data of the first component of the cutting resistance during the process is displayed on the display device; displaying, on the display device, data relating to the first data corresponding to the first component in the comparison data and the first component in an overlapping manner; The first component is a component of the cutting resistance in the direction of the rotation axis of the milling tool.

2. The processing device further displays time series data of the second component and the third component of the cutting resistance on the display device during the milling process; The management device according to claim 1 , wherein the second component and the third component are components of the cutting resistance corresponding to two directions intersecting each other in a plane perpendicular to the rotation axis of the milling tool.

3. The management device according to claim 1 , wherein the processing device displays time-series data of the first data on the display device.

4. The management device according to claim 3 , wherein the processing device displays the first data on the display device so that a processing start point in the first component coincides with a processing start point in the first data.

5. The management device according to claim 4 , wherein the processing device determines a time point at which the corresponding data exceeds a reference value as a processing start point.

6. The management device according to claim 4 , wherein the processing device determines a time point at which a variation amount of the corresponding data exceeds a threshold value as a processing start point.

7. The processing device acquires information on the feed rate of the milling tool, The management device according to claim 3, wherein, when the feed rate in the comparison data is different from the feed rate during the turning process, the processing device corrects the time axis of the first data so that the feed rate in the comparison data corresponds to the feed rate during the turning process.

8. the processing device displays a statistical quantity of the first data on the display device; The management device according to claim 1 , wherein the statistical quantity includes at least one of a maximum value, a minimum value, an average value, and a standard deviation.

9. The management device according to any one of claims 1 to 8; and the milling tool on which the sensor is mounted.

10. A control method for a management device that manages the state of a cutting tool, comprising: receiving sensor information from a sensor mounted on the milling tool; calculating a cutting resistance of the milling tool during milling processing from the sensor information; displaying time series data of the first component of the cutting resistance during milling; a step of superimposing and displaying data relating to first data corresponding to the first component in the comparison data on the cutting resistance, and the first component; A control method for a management device, wherein the first component is a component of cutting resistance in the direction of the rotation axis of the milling tool.

11. A program for causing a processing device included in a management device for managing the state of a cutting tool to execute the following method, The method comprises: receiving sensor information from a sensor mounted on the milling tool; calculating a cutting resistance of the milling tool during milling processing from the sensor information; displaying time series data of the first component of the cutting resistance during milling; a step of superimposing and displaying data relating to first data corresponding to the first component in the comparison data on the cutting resistance, and the first component; The first component is a component of cutting resistance in the direction of the rotation axis of the milling tool.

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