WO2022071078A1 - 工作機械 - Google Patents

工作機械 Download PDF

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Publication number
WO2022071078A1
WO2022071078A1 PCT/JP2021/034930 JP2021034930W WO2022071078A1 WO 2022071078 A1 WO2022071078 A1 WO 2022071078A1 JP 2021034930 W JP2021034930 W JP 2021034930W WO 2022071078 A1 WO2022071078 A1 WO 2022071078A1
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WO
WIPO (PCT)
Prior art keywords
unit
rotation speed
vibration
motor
machine tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/034930
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English (en)
French (fr)
Japanese (ja)
Inventor
村松稔文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Corp filed Critical Fanuc Corp
Priority to JP2022553875A priority Critical patent/JP7525629B2/ja
Priority to CN202180066845.9A priority patent/CN116323096A/zh
Priority to DE112021003969.5T priority patent/DE112021003969T5/de
Priority to US18/029,258 priority patent/US20230364729A1/en
Publication of WO2022071078A1 publication Critical patent/WO2022071078A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/12—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
    • B23Q11/0035—Arrangements for preventing or isolating vibrations in parts of the machine by adding or adjusting a mass, e.g. counterweights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/10—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting speed or number of revolutions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance

Definitions

  • the present invention relates to a machine tool that processes an object to be machined using a tool.
  • the machine tool is equipped with a rotating body such as a shaft.
  • a field balancer as a device for observing the degree of balance when a rotating body is regarded as a rigid rotor or an elastic rotor. This degree of balance is called the balanced state.
  • Japanese Patent Application Laid-Open No. 03-251066 discloses that the balance state of rotation of an observation target driven by rotation is observed. By observing the balanced state of the rotating body, the operator can know how to correct the balanced state of the rotating body when the operation is hindered.
  • the accuracy of observing the balance state of the rotating body by the field balancer depends on the mounting method of mounting the field balancer on the machine tool or the mounting position when the field balancer is mounted on the machine tool. Therefore, it is not always easy for the operator to stably and accurately observe the balance state of the rotating body with the field balancer. Also, it is not always easy for the operator to carry out the balance correction work.
  • an object of the present invention is to provide a machine tool that can observe the balance state of the rotating body of the machine tool regardless of the field balancer and facilitate the adjustment work of the balance state.
  • the first aspect of the present invention is A machine tool that processes an object to be machined using a tool.
  • a vibration sensor provided on the machine tool to detect the amount of vibration generated while the rotating shaft is rotating, and a vibration sensor.
  • An acquisition unit that acquires the vibration amount detected by the vibration sensor when the rotation speed detected by the encoder is a predetermined rotation speed.
  • a display control unit that displays the specified rotation speed and the vibration amount acquired by the acquisition unit on the display unit in association with each other. To prepare for.
  • the second aspect of the present invention is A machine tool that processes an object to be machined using a tool.
  • a speed estimation unit that estimates the rotation speed of the rotation axis based on the signal obtained from the current sensor, and a speed estimation unit.
  • An acquisition unit that acquires the vibration amount detected by the vibration sensor when the rotation speed estimated by the speed estimation unit is a predetermined rotation speed.
  • a display control unit that displays the specified rotation speed and the vibration amount acquired by the acquisition unit on the display unit in association with each other. To prepare for.
  • a sensor provided in a machine tool is used to capture the amount of vibration generated during rotation at a specified rotation speed to observe the balanced state of the rotating body of the machine tool regardless of the field balancer. Can be done.
  • displaying the amount of vibration generated during rotation at the specified rotation speed in association with the specified rotation speed it is possible to assist the operator in adjusting the balance state of the rotating body of the machine tool. can.
  • a machine tool is provided that can observe the balance state of the rotating body of the machine tool regardless of the field balancer and facilitate the adjustment work of the balance state.
  • FIG. 1 is a schematic view showing a machine tool of the present embodiment.
  • FIG. 2 is a schematic block diagram showing a control device.
  • FIG. 3 is a graph illustrating the signal output from the encoder.
  • FIG. 4 is a graph illustrating a signal output from the vibration sensor.
  • FIG. 5 is a graph showing the correspondence between the specified rotation speed and the vibration amount at the specified rotation speed.
  • FIG. 6 is a schematic view showing the machine tool of the modified example 1.
  • FIG. 7 is a schematic view showing the machine tool of the modified example 2.
  • FIG. 1 is a schematic view showing a machine tool 10 of the present embodiment.
  • the machine tool 10 processes an object to be machined using a tool.
  • the machine tool 10 may be a precision machine tool capable of controlling a motor with nano-order command resolution.
  • the machine tool 10 may be an ultra-precision machine tool capable of controlling a motor with a command resolution of 1/10 nano-order.
  • Examples of the machine tool 10 include a lathe machine that processes a fixed tool by bringing a rotating object into contact with the machine tool 10. Further, as the machine tool 10, a machining center or the like in which a rotating tool is brought into contact with a fixed object to be machined to be machined can be mentioned.
  • the machine tool 10 is provided with a processing machine main body 12 and a control device 14 for controlling the processing machine main body 12.
  • the processing machine main body 12 includes a machine unit.
  • the processing machine main body 12 further includes devices such as motors and sensors mounted on the machine unit.
  • the processing machine main body 12 is provided with a motor 16, an encoder 18, and a vibration sensor 20.
  • the motor 16 has a rotating shaft 16S.
  • the motor 16 further includes a rotor (not shown) and a stator (not shown).
  • the rotor rotates when the drive current output from the control device 14 flows through the coil of the stator.
  • the rotating shaft 16S of the motor 16 rotates integrally with the rotating rotor.
  • a rotating body that rotates based on the power of the motor 16 is attached to one end of the rotating shaft 16S of the motor 16.
  • the rotating body is not particularly limited as long as it is a machine part included in the processing machine main body 12. Examples of the rotating body include a spindle 22, a tool, and the like. In the present embodiment, the rotating body is the main shaft 22.
  • the spindle 22 is inserted through the through hole 24H of the housing 24.
  • the rotating shaft 16S of the motor 16 is attached to the first end portion, which is one of both ends of the main shaft 22, via the joint 26.
  • the rotating body may include a component attached to the second end portion which is the other end of both ends of the main shaft 22.
  • the rotating body includes a face plate attached to the second end.
  • the face plate is a part for fixing an object to be machined.
  • the rotating body includes a tool attached to the second end.
  • a tool is a part that processes an object to be machined.
  • the encoder 18 detects the rotation speed of the rotation shaft 16S of the motor 16.
  • the encoder 18 is provided on the motor 16.
  • the signal output from the encoder 18 is input to the control device 14.
  • the vibration sensor 20 detects the amount of vibration (vibration amount) generated when the rotating shaft 16S of the motor 16 is rotating.
  • the amount of vibration includes acceleration, velocity, displacement, angular acceleration, angular velocity, or angle.
  • the vibration sensor 20 is provided on the processing machine main body 12.
  • the installation location of the vibration sensor 20 is not particularly limited as long as the amount of vibration (vibration amount) generated when the rotating shaft 16S of the motor 16 is rotating can be detected.
  • the vibration sensor 20 is provided in the housing 24 of the spindle 22 in the processing machine main body 12.
  • the vibration sensor 20 may be provided on the spindle 22.
  • FIG. 2 is a schematic block diagram showing the control device 14.
  • the control device 14 includes an input unit 30, a display unit 32, a storage unit 34, a motor drive unit 36, and a processor 38.
  • the input unit 30 inputs information. Specific examples of the input unit 30 include a mouse, a keyboard, and the like. The input unit 30 may be configured by a touch panel or the like arranged on the display screen of the display unit 32.
  • the display unit 32 displays information. A liquid crystal display can be mentioned as a specific example of the display unit 32.
  • the display unit 32 displays a screen or the like based on the information given from the processor 38.
  • the storage unit 34 stores information.
  • the storage unit 34 may include a volatile memory (not shown) and a non-volatile memory (not shown). Examples of the volatile memory include RAM and the like. Examples of the non-volatile memory include ROM, flash memory and the like. At least a part of the storage unit 34 may be provided in the processor 38 or the like. Further, the storage unit 34 may be further provided with a hard disk or the like.
  • the motor drive unit 36 drives the motor 16.
  • a servo amplifier can be mentioned as a specific example of the motor drive unit 36.
  • the motor drive unit 36 outputs a drive current to the motor 16 so as to rotate at a rotation speed corresponding to a command value supplied from the processor 38.
  • the processor 38 processes the information. Specific examples of the processor 38 include a CPU and a GPU.
  • the processor 38 has a machining mode for machining an object to be machined and a support mode for supporting the adjustment work of the balance state.
  • the balanced state means the next first state or second state.
  • the first state is the degree of static imbalance and even disproportion.
  • the second state is the degree of imbalance due to the deformation mode.
  • the balanced state means the first state
  • the rotor that rotates integrally with the rotating shaft 16S of the motor 16 is regarded as a rigid rotor.
  • the balanced state means the first state
  • the rotary shaft 16S of the motor 16 and the rotor that rotates integrally with the rotary shaft 16S of the motor 16 may be regarded as a rigid rotor.
  • the balanced state means the second state
  • the rotor that rotates integrally with the rotating shaft 16S of the motor 16 is regarded as an elastic rotor.
  • the rotary shaft 16S of the motor 16 and the rotor that rotates integrally with the rotary shaft 16S of the motor 16 may be regarded as an elastic rotor.
  • the adjustment work means the work of adjusting so that the degree of the first state or the second state is reduced.
  • the support mode is implemented before and after the balance state adjustment work.
  • the number of operations for adjusting the balance state is not limited to one. When the number of operations for adjusting the balance state is a plurality of times, the support mode is implemented before the adjustment work and after each adjustment work.
  • the processor 38 Upon receiving the support mode execution command from the input unit 30, the processor 38 receives the command unit 40, the acquisition unit 42, the storage control unit 44, the display control unit 46, and the arithmetic unit 48 based on the program for executing the support mode. Functions as. The program for executing the support mode is stored in the storage unit 34.
  • the command unit 40 outputs the specified rotation speed as a command value to the motor drive unit 36.
  • the motor drive unit 36 drives the motor 16 so as to rotate at a predetermined rotation speed. That is, the command unit 40 outputs the specified rotation speed as a command value to the motor drive unit 36 to generate vibration necessary for observing the balanced state of the rotating body (spindle 22 in this embodiment) of the machine tool 10. , Can be generated on the rotating shaft 16S of the motor 16.
  • the specified number specified as the specified rotation speed may be one or a plurality.
  • the command unit 40 sequentially outputs each of the plurality of specified rotation speeds to the motor drive unit 36 as a command value at time intervals.
  • the command unit 40 may output each of the plurality of specified rotation speeds as a command value to the motor drive unit 36 so that the rotation speed of the rotation shaft 16S increases sequentially.
  • the command unit 40 may output each of the plurality of specified rotation speeds as a command value to the motor drive unit 36 so that the rotation speed of the rotation shaft 16S is sequentially reduced.
  • the acquisition unit 42 determines whether or not the rotation speed detected by the encoder 18 is the specified rotation speed output as a command value by the command unit 40 to the motor drive unit 36 based on the signal output from the encoder 18. Is determined.
  • FIG. 3 is a graph illustrating the signal output from the encoder 18.
  • FIG. 3 shows an example in which a pulse signal of one pulse is output from the encoder 18 when the rotation shaft 16S of the motor 16 makes one rotation. Further, an example in which the specified rotation speeds are specified as 600 rpm and 1200 rpm is shown in FIG. In this case, in the section SC1 in which one pulse is output every 0.1 seconds, the acquisition unit 42 determines that the rotation speed detected by the encoder 18 is the specified rotation speed (600 rpm). Further, in the section SC2 in which one pulse is output every 0.05 seconds, the acquisition unit 42 determines that the rotation speed detected by the encoder 18 is the specified rotation speed (1200 rpm). Although FIG. 3 illustrates a case where the rotation speed of the rotation shaft 16S is sequentially increased, the rotation speed may be sequentially decreased.
  • the acquisition unit 42 acquires the vibration amount when it is determined that the rotation speed is the specified rotation speed based on the signal output from the vibration sensor 20.
  • FIG. 4 is a graph illustrating the signal output from the vibration sensor 20.
  • the acquisition unit 42 calculates the root mean square of the vibration amount (acceleration) detected in the section SC1 by the vibration sensor 20, and acquires the calculated root mean square as the vibration amount of the section SC1. Further, the acquisition unit 42 calculates the root mean square of the vibration amount (acceleration) detected in the section SC2 by the vibration sensor 20, and acquires the calculated root mean square as the vibration amount of the section SC2.
  • the acquisition unit 42 may acquire statistical values other than the root mean square as the vibration amount of the section SC1 or the section SC2.
  • the statistical value include the standard deviation of the vibration amount (acceleration) detected in the section SC1 or the section SC2 by the vibration sensor 20.
  • the statistical value the average of the absolute values of the vibration amounts (acceleration) detected in the section SC1 or the section SC2 by the vibration sensor 20 can be mentioned. Even if the acquisition unit 42 acquires a predetermined value such as the maximum value among the absolute values of the vibration amount (acceleration) detected in the section SC1 or the section SC2 by the vibration sensor 20 as the vibration amount of the section SC1 or the section SC2. good.
  • the acquisition unit 42 extracts a component synchronized with the rotation speed from the vibration amount (acceleration) detected in the section SC1 or the section SC2 by the vibration sensor 20, and sets the amplitude or its phase to the vibration of the section SC1 or the section SC2. It may be obtained as a quantity.
  • the acquisition unit 42 acquires the vibration amount when the rotation speed detected by the encoder 18 is the specified rotation speed output as a command value by the command unit 40 to the motor drive unit 36.
  • the storage control unit 44 stores the specified rotation speed and the vibration amount acquired by the acquisition unit 42 in the storage unit 34 in association with the acquisition date as a history.
  • the vibration amount acquired by the acquisition unit 42 is the vibration amount acquired by the acquisition unit 42 while the rotating shaft 16S is rotating at the specified rotation speed.
  • FIG. 5 is a graph showing the correspondence between the specified rotation speed and the vibration amount at the specified rotation speed.
  • An example of a case where an acceleration sensor is adopted as the vibration sensor 20 is shown in FIG.
  • an example in which the specified rotation speeds are specified as 600 rpm and 1200 rpm is shown in FIG.
  • an example in which the vibration amount when the specified rotation speed is 600 rpm is 0.58 m / s 2 and the vibration amount when the specified rotation speed is 1200 rpm is 1.18 m / s 2 is shown in FIG. It is shown in.
  • the storage control unit 44 stores, for example, in the relational table of the storage unit 34, the specified rotation speed of 600 rpm and the vibration amount of 0.58 m / s 2 in association with the date. Further, the storage control unit 44 stores the specified rotation speed of 1200 rpm and the vibration amount of 1.18 m / s 2 in the relational table of the storage unit 34 in association with the date.
  • the display control unit 46 refers to the storage unit 34, and causes the display unit 32 to display the specified rotation speed associated with the date and the vibration amount.
  • the vibration amount is the vibration amount acquired by the acquisition unit 42 while the rotation shaft 16S is rotating at the specified rotation speed.
  • the display format in which the display control unit 46 displays the specified rotation speed and vibration amount on the display unit 32 is not particularly limited.
  • the display control unit 46 may display the numerical value of the specified rotation speed and the numerical value of the vibration amount on the display unit 32.
  • the display control unit 46 may display a graph having one of the specified rotational speed and the vibration amount as the vertical axis and the other as the horizontal axis on the display unit 32.
  • the display control unit 46 displays the plot on the graph based on the vibration amount acquired by the acquisition unit 42 while the rotation shaft 16S is rotating at the specified rotation speed.
  • the display time at which the display control unit 46 displays the specified rotation speed and vibration amount on the display unit 32 is not particularly limited.
  • the display control unit 46 may display the specified rotation speed and the vibration amount on the display unit 32 at the time when the display request is received from the input unit 30.
  • the display control unit 46 may display the specified rotation speed and the vibration amount on the display unit 32 at the time when the acquisition unit 42 acquires the vibration amount.
  • the storage unit 34 has the vibration amount acquired by the acquisition unit 42 when the support mode is implemented for each date of the support mode implemented in the past. It is stored in association with the specified rotation speed.
  • the display control unit 46 may display the vibration amount acquired by the acquisition unit 42 this time on the display unit 32 in a state where the vibration amount acquired by the acquisition unit 42 in the past can be compared.
  • the calculation unit 48 corrects the angle and the correction amount based on the difference between the vibration amount stored in the storage unit 34 before the balance state adjustment work and the vibration amount stored in the storage unit 34 after the balance state adjustment work. Compute at least one of them.
  • the correction angle means a rotation angle at which adjustment work should be performed on a rotating body such as a rotor.
  • the correction amount means the cutting amount.
  • the correction amount means the weight amount of the balance weight.
  • the specific calculation method of the correction angle and the correction amount is not particularly limited.
  • the calculation unit 48 can calculate the correction angle and the correction amount by using the calculation method disclosed in Japanese Patent No. 5808585, JP-A-6-273254, or JP-A-2002-7375.
  • the machine tool 10 of the present embodiment uses the sensors (encoder 18 and vibration sensor 20) provided in the processing machine main body 12 to generate vibration when the rotating shaft 16S is rotating at a specified rotation speed. Get the quantity. Thereby, the balance state of the rotating body (spindle 22) attached to the rotating shaft 16S in the processing machine main body 12 can be observed without depending on the field balancer.
  • the machine tool 10 of the present embodiment displays the specified rotation speed and the vibration amount generated when the rotation shaft 16S is rotating at the specified rotation speed in association with each other on the display unit 32. This makes it possible to assist the operator in the work of adjusting the balance state of the rotating body (spindle 22) attached to the rotating shaft 16S.
  • the machine tool 10 of the present embodiment calculates at least one of the correction angle and the correction amount of the balance state with respect to the rotating shaft 16S, and displays the calculation result on the display unit 32. Thereby, the operator can carry out the next adjustment work while observing at least one of the difference, the correction angle and the correction amount before and after the adjustment work of the balance state. Therefore, the work of adjusting the balance state can be further facilitated.
  • FIG. 6 is a schematic view showing the machine tool 10 of the modified example 1.
  • the same reference numerals are given to the configurations equivalent to the configurations described in the embodiments.
  • the description overlapping with the embodiment is omitted.
  • the current sensor 50 is provided in place of the encoder 18, and the speed estimation unit 52 is newly provided in the control device 14.
  • the current sensor 50 detects the drive current output to the motor 16.
  • the current sensor 50 may be provided in the motor 16 (see FIG. 6) or in the motor drive unit 36 (see FIG. 2) that drives the motor 16.
  • the speed estimation unit 52 estimates the rotation speed of the rotation shaft 16S based on the signal obtained from the current sensor 50.
  • the specific calculation method for estimating the rotation speed is not particularly limited.
  • the speed estimation unit 52 can estimate the rotation speed by using the calculation method disclosed in Japanese Patent Application Laid-Open No. 2020-005406. Therefore, even if the motor 16 is not provided with the encoder 18, the rotation speed of the rotation shaft 16S can be captured.
  • the rotation speed estimated by the speed estimation unit 52 based on the signal output from the vibration sensor 20 is commanded to the motor drive unit 36. It is determined whether or not 40 is the specified rotation speed output as a command value.
  • the rotary shaft 16S rotates at a predetermined rotation speed by using the sensors (current sensor 50 and vibration sensor 20) provided in the processing machine main body 12 as in the embodiment. Get the amount of vibration generated when you are. Thereby, as in the embodiment, the balance state of the rotating body (spindle 22) attached to the rotating shaft 16S in the processing machine main body 12 can be observed without using the field balancer.
  • FIG. 7 is a schematic view showing the machine tool 10 of the modification 2.
  • the same reference numerals are given to the configurations equivalent to the configurations described in the embodiments. In this modification, the description overlapping with the embodiment is omitted.
  • a computer device 54 capable of exchanging various information is connected to the control device 14. If the device is physically separated from the control device 14, a device other than the computer device 54 may be adopted. Further, in FIG. 7, the case where the computer device 54 is connected to the control device 14 of the embodiment is exemplified, but the computer device 54 may be connected to the control device 14 of the modification 1. ..
  • the command unit 40 (FIG. 2), the acquisition unit 42 (FIG. 2), the storage control unit 44 (FIG. 2), and the display control unit 46 provided in the processor 38 (FIG. 2) of the control device 14 (FIG. 2) and the arithmetic unit 48 (FIG. 2) are omitted.
  • the processor 56 of the computer device 54 is provided with a command unit 40, an acquisition unit 42, a storage control unit 44, a display control unit 46, and a calculation unit 48.
  • the processor 56 can function as a command unit 40, an acquisition unit 42, a storage control unit 44, a display control unit 46, and a calculation unit 48.
  • the balance state of the rotating body of the machine tool 10 can be observed without changing the existing control device 14 without changing the field balancer, and the balance state adjustment work can be performed. Can be facilitated.
  • the first invention is a machine tool (10) for machining an object to be machined by using a tool, which comprises a motor (16) having a rotating shaft (16S), a motor driving unit (36) for driving the motor, and a motor driving unit (36).
  • An encoder (18) provided in the motor to detect the rotation speed of the rotating shaft
  • a vibration sensor (20) provided in the machine tool to detect the amount of vibration generated while the rotating shaft is rotating
  • an encoder detect the rotation speed.
  • the acquisition unit (42) that acquires the vibration amount detected by the vibration sensor when the rotation speed is a predetermined specified rotation speed, and the specified rotation speed and the vibration amount acquired by the acquisition unit are displayed in association with each other.
  • a display control unit (46) to be displayed on the unit (32) is provided.
  • the second invention is a machine tool for machining an object to be machined by using a tool, which is provided in a motor having a rotating shaft, a motor drive unit for driving the motor, and the motor or the motor drive unit, and outputs to the motor.
  • a current sensor (50) that detects the drive current to be driven, a vibration sensor that is provided in the machine tool and detects the amount of vibration generated during rotation of the rotating shaft, and a signal of the rotating shaft based on a signal obtained from the current sensor.
  • a speed estimation unit (52) that estimates the rotation speed, and an acquisition unit that acquires the vibration amount detected by the vibration sensor when the rotation speed estimated by the speed estimation unit is a predetermined specified rotation speed. It is provided with a display control unit that displays the rotation speed and the vibration amount acquired by the acquisition unit in association with each other on the display unit.
  • the amount of vibration generated during rotation at a specified rotation speed is captured by using a sensor provided in the machine tool, so that the rotating body of the machine tool is used regardless of the field balancer.
  • the balance state can be observed.
  • by displaying the vibration amount generated during rotation at the specified rotation speed and the specified rotation speed in association with each other it is possible to assist the operator in the work of adjusting the balance state of the rotating body of the machine tool.
  • the balance state of the rotating body of the machine tool can be observed regardless of the field balancer, and the balance state adjustment work can be facilitated.
  • the storage control unit (44) that stores the specified rotation speed and the vibration amount acquired by the acquisition unit in the storage unit (34) in association with each other, and the rotation axis. Based on the difference between the vibration amount stored in the storage unit before the balance state adjustment work and the vibration amount stored in the storage unit after the balance state adjustment work, the correction angle and correction amount of the balance state with respect to the rotation axis.
  • a calculation unit (48) for calculating at least one of them may be further provided, and the display control unit may display at least one of the difference, the correction angle, and the correction amount on the display unit.
  • the motor drive unit is provided in the control device (14) that controls the processing machine main body (12), and the acquisition unit and the display control unit are separated from the control device. It may be provided in the device to be used. As a result, the balance state of the rotating body of the machine tool can be observed without changing the existing control device without changing the field balancer, and the balance state adjustment work can be facilitated. ..

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Testing Of Balance (AREA)
  • Control Of Electric Motors In General (AREA)
  • Automatic Control Of Machine Tools (AREA)
PCT/JP2021/034930 2020-09-30 2021-09-24 工作機械 Ceased WO2022071078A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2022553875A JP7525629B2 (ja) 2020-09-30 2021-09-24 工作機械
CN202180066845.9A CN116323096A (zh) 2020-09-30 2021-09-24 机床
DE112021003969.5T DE112021003969T5 (de) 2020-09-30 2021-09-24 Werkzeugmaschine
US18/029,258 US20230364729A1 (en) 2020-09-30 2021-09-24 Machine tool

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Application Number Priority Date Filing Date Title
JP2020-165407 2020-09-30
JP2020165407 2020-09-30

Publications (1)

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WO2022071078A1 true WO2022071078A1 (ja) 2022-04-07

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JP (1) JP7525629B2 (https=)
CN (1) CN116323096A (https=)
DE (1) DE112021003969T5 (https=)
WO (1) WO2022071078A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628032A (ja) * 1985-07-04 1987-01-16 Nagase Tekkosho:Kk 回転体のバランス表示装置
JPH02256461A (ja) * 1988-12-28 1990-10-17 Nagase Iron Works Co Ltd 砥石の管理装置
JP2001170863A (ja) * 1999-12-20 2001-06-26 Okamoto Machine Tool Works Ltd 研削装置
JP2004074292A (ja) * 2002-08-09 2004-03-11 Matsushita Electric Ind Co Ltd 回転バランス調整方法及び加工装置
JP2012088967A (ja) * 2010-10-20 2012-05-10 Okuma Corp 工作機械のモニタ方法及びモニタ装置、工作機械

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2716237B2 (ja) 1990-02-27 1998-02-18 ファナック株式会社 モータのバランス構造
JPH06273254A (ja) 1993-03-18 1994-09-30 Hitachi Ltd 弾性ロータの等価修正ウェイト算出法
JP2002007375A (ja) 2000-06-23 2002-01-11 Mitsubishi Heavy Ind Ltd 回転機械の妥協的つりあわせ解法、及び、その調整方法
DE102008028892A1 (de) * 2008-06-18 2009-12-31 Dittel Messtechnik Gmbh Wuchteinrichtung, Auswuchtsystem und Auswuchtverfahren
JP5190792B2 (ja) * 2008-09-26 2013-04-24 日本電産株式会社 不釣り合い修正方法、および、モータ
JP5631779B2 (ja) * 2011-03-03 2014-11-26 オークマ株式会社 工作機械の振動抑制方法及び装置
JP5808585B2 (ja) 2011-06-17 2015-11-10 株式会社長浜製作所 不釣合い測定および修正装置
CN102501141B (zh) * 2011-10-28 2013-07-31 西安交通大学 一种基于内置传感器的数控机床主轴现场动平衡方法
CN110023858B (zh) * 2017-06-20 2020-01-07 山崎马扎克公司 机床管理系统以及机床的管理方法
JP6692777B2 (ja) * 2017-07-25 2020-05-13 株式会社東芝 移載装置および判定方法
JP6730377B2 (ja) 2018-06-28 2020-07-29 ファナック株式会社 モータ制御装置
CN111347284B (zh) * 2020-04-08 2024-09-10 新代科技(苏州)有限公司 一种车床轮毂加工中在线动平衡检调装置及检调方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628032A (ja) * 1985-07-04 1987-01-16 Nagase Tekkosho:Kk 回転体のバランス表示装置
JPH02256461A (ja) * 1988-12-28 1990-10-17 Nagase Iron Works Co Ltd 砥石の管理装置
JP2001170863A (ja) * 1999-12-20 2001-06-26 Okamoto Machine Tool Works Ltd 研削装置
JP2004074292A (ja) * 2002-08-09 2004-03-11 Matsushita Electric Ind Co Ltd 回転バランス調整方法及び加工装置
JP2012088967A (ja) * 2010-10-20 2012-05-10 Okuma Corp 工作機械のモニタ方法及びモニタ装置、工作機械

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