WO2023096128A1 - 공작기계의 능동형 진동 저감 장치 및 저감 방법 - Google Patents
공작기계의 능동형 진동 저감 장치 및 저감 방법 Download PDFInfo
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- WO2023096128A1 WO2023096128A1 PCT/KR2022/014301 KR2022014301W WO2023096128A1 WO 2023096128 A1 WO2023096128 A1 WO 2023096128A1 KR 2022014301 W KR2022014301 W KR 2022014301W WO 2023096128 A1 WO2023096128 A1 WO 2023096128A1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
- G05B19/404—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
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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
- 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
- B23Q11/0039—Arrangements for preventing or isolating vibrations in parts of the machine by changing the natural frequency of the system or by continuously changing the frequency of the force which causes the vibration
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
- B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
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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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/12—Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
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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
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
- B23Q17/0971—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring mechanical vibrations of parts of the machine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/005—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion using electro- or magnetostrictive actuation means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D19/00—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
- G05D19/02—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase characterised by the use of electric means
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37432—Detected by accelerometer, piezo electric
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37434—Measuring vibration of machine or workpiece or tool
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/39—Robotics, robotics to robotics hand
- G05B2219/39241—Force and vibration control
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41115—Compensation periodical disturbance, like chatter, non-circular workpiece
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41128—Compensate vibration beam, gantry, feedback of speed of non driven end
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/42—Servomotor, servo controller kind till VSS
- G05B2219/42077—Position, speed or current, combined with vibration feedback
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49048—Control of damping of vibration of machine base
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49054—Active damping of tool vibration
Definitions
- the present invention relates to an active vibration reduction device and method for a machine tool, and more particularly, by changing vibration data of individual devices and excitation opposite to each other in real time in an excitation unit to generate vibration generated in an individual unit in real time. It relates to an active vibration reduction device and method for automatically and actively reducing machine tool vibration.
- a machine tool refers to a machine used for the purpose of processing a metal/non-metal workpiece into a desired shape and dimension using an appropriate tool by various cutting processing methods or non-cutting processing methods.
- NC numerical control
- CNC computerized numerical control
- the machine tool has a table on which the material, which is a workpiece, is seated and transported for processing, a pallet for preparing the workpiece before processing, a spindle that rotates with a tool or workpiece combined, a tailstock for supporting the workpiece, etc. provide etc.
- a table, a tool post, a main shaft, a tailstock, a resting ball, etc. are provided with a feed unit that feeds along a feed axis to perform various machining operations.
- machine tools use a plurality of tools for various processing, and a tool magazine or a turret is used as a tool storage area for storing and storing a plurality of tools.
- a machine tool includes an automatic tool changer (ATC) for withdrawing or re-accommodating a specific tool from a tool magazine according to a command of a numerical controller to improve productivity of the machine tool.
- ATC automatic tool changer
- machine tools are provided with an automatic pallet changer (APC) to minimize non-processing time.
- An Automatic Pallet Changer (APC) automatically exchanges pallets between the workpiece processing area and the workpiece installation area. A workpiece may be mounted on the pallet.
- a servo motor is used to drive an automatic tool changer (ATC), an automatic pallet changer (APC), a tailstock, or a ball rest in a machine tool.
- ATC automatic tool changer
- API automatic pallet changer
- tailstock a tailstock
- ball rest a ball rest in a machine tool.
- machine tools can be divided into turning centers and machining centers. Machining centers can machine workpieces using rotating tools. On the other hand, a turning center can process a rotating workpiece using a tool.
- a machine tool such as a machining center includes various individual devices in a form that is fixed or movable relative to other fixed or moving devices for processing a workpiece. That is, the saddle may be installed so as to be movable in a horizontal, vertical, or height direction with respect to the bed fixed to the ground or the base and the bed.
- a column may be installed to be movable in a horizontal or vertical direction with respect to the saddle
- a spindle may be installed to be movable in a horizontal or vertical direction or a height direction with respect to the column
- a tool may be mounted on a front end of the spindle.
- the vibration reduction device and vibration reduction method of the conventional machine tool are formed in the form of vibration having only a fixed mass and frequency for each device of the machine tool, and real-time dynamic characteristics change of the individual device in which the vibration intensity and direction are changed in real time Since it cannot actively cope with vibration reduction of machine tools, it takes a lot of time and cost, and there is a problem of deteriorating the stability and reliability of machine tools.
- the conventional vibration reduction device and method for reducing vibration of a machine tool cannot actively reduce vibration due to dynamic characteristic change quickly and automatically, such as changing the location of an individual device that generates vibration during machining of a machine tool, and thus processing according to the increase in vibration.
- the precision was reduced and the generation of defective products increased due to incorrect processing, resulting in a waste of resources and an increase in processing cost.
- the size of the vibration reduction unit mounted on each device of the machine tool is large, design change is not easy, and miniaturization cannot be achieved, thereby reducing the manufacturing cost and maintenance of the vibration reduction device.
- the vibration reduction device and vibration reduction method of the conventional machine tool generate vibration opposite to the vibration that occurs immediately and actively in the dynamic characteristic change that is changed in real time according to the real-time position change or rotation speed for processing the workpiece in the individual device. Failure to do so has a problem in that the accuracy and stability of the vibration reduction are reduced, resulting in consumer and user complaints, resulting in a decrease in sales, and a decrease in productivity due to an increase in non-processing time.
- the present invention is to solve the above problems, and an object of the present invention is to obtain vibration data of an individual device sensed through a sensing unit installed adjacent to a vibration generating part of an individual device in which an excitation unit is disposed and excitation opposite to each other.
- the vibration generated by the individual unit is automatically and actively reduced in real time by changing the intensity and direction of the excitation in real time according to the processing state of the individual device or the state according to the position change, thereby improving the machining precision of the machine tool.
- It relates to an active vibration reduction device and method for reducing machine tools that can maximize and improve the safety and reliability of machine tools.
- another object of the present invention is to actively and in real time generate vibrations generated in individual devices in a unit having an excitation having a magnitude and direction opposite to vibration data of an individual device sensed through a sensing unit and generating them accurately and quickly.
- the fixed part and the vibrating part of the excitation unit are implemented in a sliding manner through an electromagnet to reduce production and maintenance costs through miniaturization of the excitation unit, space utilization is maximized, operator's convenience is promoted, and Active vibration reduction device for machine tools that can reduce manufacturing costs, installation costs, and maintenance costs through modularization and compactification of units, and improve machining productivity by minimizing non-processing time such as analysis for real-time active vibration reduction and reduction methods.
- an active vibration reduction device for a machine tool includes an excitation unit disposed in each individual device constituting the machine tool generating vibration during operation of the machine tool to generate excitation; a sensing unit installed adjacent to a vibration generating portion of the individual device where the excitation unit is disposed and sensing vibration of the individual device; and a control unit controlling the operation of the excitation unit, wherein the control unit generates excitation opposite to the vibration data of the individual device in real time according to the vibration data of the individual device sensed by the sensing unit. Vibration generated in the individual unit can be automatically reduced in real time by actively changing the excitation generated in the excitation unit so as to be.
- the control unit of the active vibration reduction device for a machine tool controls the vibration of the individual device according to the vibration data of the individual device sensed by the sensing unit.
- a data storage unit for storing data for actively and automatically reducing vibration of the individual device by generating an excitation unit that is opposite to the vibration data;
- an analyzer configured to analyze vibration information of the individual device by analyzing vibration data sensed by the sensing unit and data stored in the data storage unit;
- a calculation unit that calculates the strength and direction of excitation generated by the excitation unit through the analysis result of the analysis unit and the data stored in the data storage unit; and a reduction unit for automatically reducing the vibration of the individual device by actively generating the excitation opposite to the individual device in the excitation unit according to the calculation result of the calculation unit in real time.
- the data storage unit of the control unit of the active vibration reduction device for a machine tool includes data, processing programs, and driving for individual devices of the machine tool.
- Basic data storage unit for storing data about the program; a reference data storage unit for storing data on a reference value for confirming occurrence of vibration for each of the individual devices and a gain value for each of the individual devices; a sensing data storage unit for storing the data sensed by the sensing unit; and a real-time data storage unit for storing the analysis result of the analysis unit, the calculation result of the calculation unit, and the reduction result of the reduction unit in real time.
- the analysis unit of the control unit of the active vibration reduction device for a machine tool stores the data sensed from the sensing unit and the data stored in the data storage unit.
- a confirmation unit for confirming whether or not vibration is generated in each of the individual devices when the machine tool is operated through; and a comparison unit that compares the real-time vibration sensing value of the individual device stored in the sensing data storage unit with a reference value stored in the reference data storage unit when it is confirmed that vibration occurs as a result of the verification unit.
- the calculation unit of the control unit of the active vibration reduction device for a machine tool when the sensing value exceeds the reference value as a comparison result of the comparison unit a speed calculation unit for calculating a speed of the individual device according to the analysis result of the analysis unit and the data stored in the data storage unit; an excitation calculator calculating an excitation value to be generated by the excitation unit according to the analysis result of the analysis unit, the calculation result of the speed calculation unit, and the data stored in the data storage unit; a current calculator calculating a current value to be transmitted to the excitation unit according to the analysis result of the analyzer, the calculation result of the excitation calculator, and the data stored in the data storage unit; and a determination unit configured to determine a direction of excitation to be generated by the excitation unit according to a sensing result of the sensing unit, an analysis result of the analyzing unit, a calculation result of the current calculating unit, and data stored in the data storage unit.
- the reduction unit of the control unit of the active vibration reduction device for a machine tool calculates the sensing result of the sensing unit, the analysis result of the analyzing unit, and the calculation unit.
- a processing unit that transmits a current signal to the excitation unit so that the excitation unit generates excitation having vibration intensity and vibration direction opposite to those of the vibration data of the individual device according to the result and the data stored in the data storage unit; and a feedback unit receiving feedback of the sensing information received from the sensing unit and the excitation information generated by the excitation unit after the excitation unit generates excitation.
- the excitation unit of the active vibration reduction device for a machine tool includes a housing part; a fixing part fixedly installed to the housing part to selectively form an electromagnetic field; an actuator unit that transmits current applied to the fixing unit under the control of the control unit; a guide part installed on a part of the housing part; and a vibrating unit slidably coupled to the guide unit to generate excitation when a specific electromagnetic field is formed by a current value applied through the actuator unit.
- the vibration unit of the active vibration reduction device for a machine tool may further include a damper unit disposed between the housing unit and the vibration unit.
- the housing portion of the excitation unit of the active vibration reduction device for a machine tool includes a base portion coupled to the individual device; and support parts extending from both sides of the base part to support the fixing part and the guide part.
- the fixing unit of the excitation unit of the active vibration reduction device for a machine tool includes a stator core fixedly coupled to both sides of the support unit; and a stator in which a coil is wound while surrounding an outer circumferential surface of the stator core.
- the vibration unit of the excitation unit of the active vibration reduction device for a machine tool is formed to have a predetermined weight while accommodating the fixing unit therein. wealth; and a permanent magnet fixedly installed on the inner surface of the slide part to be spaced apart from the stator by a predetermined distance.
- the guide portion of the excitation unit of the active vibration reduction device for a machine tool is a rail portion coupled to both sides of the support portion so as to be parallel to the stator core. ; and a block portion formed on an outer surface of the slide portion to guide the movement of the slide portion and slide along the rail portion.
- the vibration excitation unit of the active vibration reduction device for a machine tool is arranged in a plurality in one individual device, allowing freedom under the control of the control unit. can also generate excitation.
- a method for reducing active vibration of a machine tool measures vibration data of each individual device constituting a machine tool that generates vibration during operation of the machine tool and excitation opposite to each other. storing data for automatically reducing vibration generated in the individual unit in real time by actively changing and generating the vibration in real time in the excitation unit; sensing the vibration of the individual device by being installed adjacent to the vibration generating part of the individual device in which the excitation unit is installed; checking whether the individual device vibrates or not; Comparing a sensed value with a pre-stored reference value when vibration occurs in the individual device as a result of the check; calculating the speed of the individual device according to the sensing result, the confirmation result, the reference result, and pre-stored data when the sensing value as a comparison result exceeds the reference value; calculating an excitation value to be generated by the excitation unit according to a sensing result, a confirmation result, a comparison result, a speed calculation result, and pre-stored data;
- An active vibration reduction device and method for a machine tool is a unit having an excitation opposite to vibration data of an individual device sensed through a sensing unit installed adjacent to a vibration generating part of an individual device in which an excitation unit is disposed. Maximizes the machining precision of machine tools by automatically and actively reducing vibrations generated by individual units in real time by changing the strength and direction of excitation in real time to conform to changes in dynamic characteristics due to the change in the processing state or location of individual devices. It has the effect of improving the safety and reliability of machine tools.
- the active vibration reduction device and method of a machine tool accurately and quickly generate vibration data of an individual device sensed through a sensing unit and a unit having an excitation having a size and direction opposite to each other in an individual device.
- the miniaturization of the excitation unit reduces production and maintenance costs, maximizes space utilization, and There is an effect that can promote compactness of the machine.
- the active vibration reduction device and method for a machine tool can quickly and easily adjust the current and direction transmitted to the excitation unit through a control unit to rapidly change the vibration intensity and direction of vibration generated by the excitation unit.
- a control unit to rapidly change the vibration intensity and direction of vibration generated by the excitation unit.
- the active vibration reduction device and method of the machine tool according to the present invention improves operator convenience by automatically and actively reducing vibration through a control unit and an excitation unit according to the changing state of the magnitude and intensity of vibration generated by an individual device. It has the effect of promoting export, reducing production cost, maintenance cost and time, and promoting export increase.
- FIG. 1 shows a graph of vibration generation according to Y-axis and Z-axis movement of a conventional machine tool.
- Figure 2 shows a conceptual diagram for the increase in vibration generation according to the Z-axis position change of the spindle of the machine tool.
- FIG. 3 shows a conceptual diagram of a machine tool in a state in which an active vibration reduction device for a machine tool according to the present invention is installed.
- Figure 4 shows a front perspective view of the excitation unit of the active vibration reduction device for a machine tool according to the present invention.
- FIG. 5 shows a rear perspective view of the excitation unit of the active vibration reduction device for a machine tool according to the present invention.
- FIG. 6 is a side view of the excitation unit of the active vibration reduction device of the machine tool in a state in which the base part is removed in FIG. 4 .
- FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6 .
- FIG. 8 shows a conceptual diagram capable of reducing vibration with two degrees of freedom in the active vibration reduction device for a machine tool according to the present invention.
- FIG. 9 shows a block diagram of a control unit of an active vibration reduction device for a machine tool according to the present invention.
- FIG. 10 shows a procedure diagram of an active vibration reduction method for a machine tool according to the present invention.
- 11 to 15 show graphs in a state in which vibration is reduced by the active vibration reduction device and method of a machine tool according to the present invention.
- FIG. 3 shows a conceptual diagram of a machine tool in a state where an active vibration reduction device for a machine tool according to the present invention is installed
- FIG. 4 shows a front perspective view of an excitation unit of an active vibration reduction device for a machine tool according to the present invention.
- FIG. is a rear perspective view of the excitation unit of the active vibration reduction device for a machine tool according to the present invention.
- FIG. 6 is a side view of an excitation unit of an active vibration reduction device for a machine tool in a state in which the base part is removed in FIG. 4
- FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6 .
- FIG. 8 shows a conceptual diagram capable of reducing vibration with two degrees of freedom in the active vibration reduction device for a machine tool according to the present invention.
- 9 shows a block diagram of a control unit of an active vibration reduction device for a machine tool according to the present invention.
- 10 shows a procedure diagram of an active vibration reduction method for a machine tool according to the present invention.
- 11 to 15 show graphs in a state in which vibration is reduced by the active vibration reduction device and method of a machine tool according to the present invention.
- the active vibration reduction device 1 for a machine tool according to the present invention includes a vibration unit 100 , a sensing unit 200 , and a control unit 300 .
- the excitation unit 100 is disposed in each individual device constituting the machine tool in which vibration occurs during operation of the machine tool to generate excitation. That is, in general, machine tools include various individual devices that are fixed or movable relative to other devices that are fixed or move to process a workpiece.
- the saddle 20 may be installed so as to be movable in a horizontal, vertical, or height direction with respect to the bed 10 fixed to the ground or base and such a bed.
- the column 30 is installed to be movable in the horizontal, vertical or height direction with respect to the saddle
- the spindle 40 is installed to be movable in the horizontal or vertical direction or height direction with respect to the column, and at the tip of the spindle
- a tool 50 is rotatably mounted to machine a workpiece with a rotating tool.
- the transfer unit performs a function of transferring the saddle, column, and spindle.
- the transfer unit may be composed of a ball screw, a linear guide, and a linear guide block.
- the linear guide may be formed of an LM guide rail.
- the sensing unit 200 is installed adjacent to the vibration generating part of the individual device where the excitation unit is disposed to sense the vibration of the individual device.
- the sensing unit may be installed in a part where the vibration occurs the most or a plurality of sensing units may be installed in the vibration generating part as needed.
- such an excitation unit is installed adjacent to a vibration generating part of each individual device, such as a sensing unit, but unlike the sensing unit, it is formed in a predetermined size to generate excitation due to space limitations It is installed in an appropriate place of the corresponding individual device and generates excitation through the control of the control unit to actively reduce the vibration of the corresponding individual device in real time. That is, as shown in FIG. 3, as an example, when the individual device is a spindle, the most vibration occurs at the part where the tool is mounted and rotates, so the excitation unit is preferably installed adjacent to the part where the tool is mounted.
- the excitation unit is installed in a part of the spindle where space is secured, and the sensing unit is installed adjacent to the vibration part of the spindle where the tool is mounted to sense and control the vibration generated from the spindle, which is an individual device. delivered to the unit.
- the sensing unit may be formed of a sensor that senses an acceleration of an individual device.
- the control unit 300 controls the operation of the excitation unit. That is, the control unit actively changes the excitation generated in the excitation unit to generate the vibration data of the individual device and the excitation opposite to each other in real time according to the vibration data of the individual device sensed by the sensing unit to generate the vibration generated in the individual unit. performs a function to automatically reduce in real time.
- the active vibration reduction device for a machine tool is actually in a unit having an excitation opposite to the vibration data of the individual device sensed through the sensing unit installed adjacent to the vibration generating part of the individual device where the excitation unit is disposed.
- control unit of the active vibration reduction device for a machine tool includes a PLC.
- a PLC Programmable Logic Controller
- a PLC performs a function of performing communication with a spindle, column, saddle, a transfer unit thereof, a control unit, etc. according to a predetermined protocol, and executing control commands through such communication. That is, the PLC drives the spindle, column, saddle transfer unit, spindle rotation, magazine, etc. according to the numerical control program of the control unit.
- control unit includes a numerical control (NC) or a computerized numerical control (CNC), and various numerical control programs are embedded therein. That is, the control unit has a built-in drive program for a transfer part that transfers a spindle, column, and saddle of a machine tool, and the corresponding program is automatically loaded and operated according to the drive of the control unit.
- control unit performs communication with the PLC, the analysis unit, the data storage unit, the calculation unit, and the reduction unit by a predetermined protocol.
- this control unit includes a main operation unit, and this main operation unit includes a screen display program and a data input program according to screen display selection, It displays the software switch on the display screen according to the output of the display program, recognizes the on/off of the software switch, and gives input/output commands for machine operation.
- the main operation unit is installed on a housing, a case, or one side of the machine tool and includes various function switches or buttons and a monitor capable of displaying various types of information.
- control unit 300 of the active vibration reduction device 1 for a machine tool includes a data storage unit 310, an analysis unit 320, a calculation unit 330, and a reducing unit 340.
- the data storage unit 310 generates a unit having an excitation opposite to the vibration data of the individual device according to the vibration data of the individual device sensed by the sensing unit to actively and automatically reduce the vibration of the individual device. stored on or in real time.
- the analysis unit 320 analyzes vibration data sensed by the sensing unit and data stored in the data storage unit to analyze vibration information of individual devices.
- the calculation unit 330 calculates the strength and direction of excitation generated by the excitation unit through the analysis result of the analysis unit and the data stored in the data storage unit.
- the reduction unit 340 performs a function of automatically reducing the vibration of the individual device by actively generating it while changing in real time the excitation that is opposite to the individual device in the excitation unit according to the calculation result of the calculation unit.
- the active vibration reduction device for a machine tool simply and quickly adjusts the current and direction transmitted to the excitation unit through the control unit to automatically and quickly and accurately adjust the vibration intensity and direction of vibration generated from the excitation unit. According to control, it is possible to improve processing productivity by minimizing non-processing time due to analysis and maintenance for vibration reduction according to the dynamic characteristics state that is changed in real time in individual devices.
- the data storage unit 310 of the control unit 100 of the active vibration reduction device for a machine tool includes a basic data storage unit 311, a reference data storage unit 312, and sensing data A storage unit 313 and a real-time data storage unit 314 are included.
- the basic data storage unit 311 stores data for individual devices of the machine tool, processing programs, and data for driving programs.
- the reference data storage unit 312 stores data on a reference value for checking vibration occurrence for each individual device and a gain value for each individual device.
- the sensing data storage unit 313 stores data sensed by the sensing unit.
- the real-time data storage unit 314 stores the analysis result of the analysis unit, the calculation result of the calculation unit, and the reduction result of the reduction unit in real time.
- the analysis unit 320 of the control unit 100 of the active vibration reduction device for a machine tool includes a confirmation unit 321 and a comparison unit 322 .
- the checking unit 321 checks whether or not vibration is generated by an acceleration signal in each individual device during operation of the machine tool through data sensed by the sensing unit and data stored in the data storage unit.
- the comparator 322 compares the real-time vibration sensing value of the individual device stored in the sensing data storage unit with the reference value stored in the reference data storage unit when it is confirmed that vibration has occurred as a result of the verification unit.
- the calculating unit 330 of the control unit 100 of the active vibration reduction device for a machine tool includes a speed calculating unit 331, a vibration calculating unit 332, and a current calculating unit 333. ), and a determination unit 334.
- the current calculator 333 calculates a current value to be transmitted to the excitation unit according to the analysis result of the analyzer, the calculation result of the excitation calculator, and the data stored in the data storage unit. That is, the current calculator calculates the current value through Equation 1.
- the determination unit 334 determines the direction of excitation to be generated in the excitation unit according to the sensing result of the sensing unit, the analysis result of the analysis unit, the calculation result of the current calculation unit, and the data stored in the data storage unit. That is, the determination unit transmits the current value calculated through the current calculator to the unit having the current value, and determines the sliding direction of the vibrating unit to determine the sliding direction of the vibrating unit by controlling the direction of current drawing and drawing when vibration is generated by sliding and moving the vibrating unit. perform the function of
- the reduction unit 340 of the control unit 100 of the active vibration reduction device for a machine tool includes a processing unit 341 and a feedback unit 342.
- the processing unit 341 generates a unit having vibration intensity and vibration direction opposite to the vibration data of the individual device according to the sensing result of the sensing unit, the analysis result of the analyzing unit, the calculation result of the calculating unit, and the data stored in the data storage unit. It transmits the current signal to the excitation unit to generate and controls the excitation unit to generate compensation excitation of the opposite phase to the vibration data of the individual device.
- the feedback unit 342 receives the sensing information received from the sensing unit and the excitation information generated from the excitation unit after the excitation unit generates excitation, and performs a function of receiving feedback of the current vibration state of the individual device.
- the active vibration reduction device for a machine tool promotes operator's convenience by automatically and actively reducing through a control unit and an excitation unit according to the changing state of the magnitude and intensity of vibration generated in an individual device, It can reduce production cost, maintenance cost and time, and promote export increase.
- the excitation unit 100 of the active vibration reduction device for a machine tool includes a housing part 110, a fixing part 120, a vibrating part 130, and a guide part 140. ), an actuator unit 150, and a damping unit 160.
- the housing part 110 forms the outer shape of the excitation unit and provides a space in which a fixing part, an actuator part, a vibrating part, and a guide part are installed.
- the housing part 110 is formed to protrude vertically from both sides of the plate-shaped base part 111 coupled to the individual device and the base part to support the fixing part and the guide part 112 ). That is, the base part is formed in a substantially rectangular plate shape, and the support part is formed to protrude from both sides of the base part to face each other in a vertical direction, and provides a space in which the fixing part and the guide part are coupled to be fixedly installed in the housing part.
- the fixing part 120 is fixedly installed on the housing part and selectively forms an electromagnetic field. Further, preferably, the fixing part 120 includes a stator core 121 to which both sides are fixedly coupled to the support part and a stator 122 around which a coil is wound while surrounding an outer circumferential surface of the stator core. That is, the stator core is formed in the form of a square bar or circular bar having a predetermined length in the horizontal direction, and a coil is wound on the stator core a predetermined number of times, and current is generated in the stator coil according to the current value signal transmitted through the processing unit of the reduction unit. flows to form an electromagnetic field.
- the vibrating unit 130 is slidably coupled to the guide unit to generate vibration when a specific electromagnetic field is formed by a current value applied through the actuator unit.
- the vibrating part 130 is located on the inner surface of the slide part so as to be spaced apart from the stator and the slide part 131 formed to have a predetermined weight while accommodating a fixed part formed of the stator core and the stator therein. It includes a permanent magnet 132 that is fixedly installed.
- a sliding part may be formed in a substantially rectangular parallelepiped or regular hexahedron shape having a hollow cavity.
- the actuator unit 150 transfers the current applied to the fixing unit under the control of the control unit. That is, the actuator part 150 is disposed on a part of the base part or the support part and transmits the current applied to the fixing part according to the signal transmitted through the processing part to make the current flow in the coil wound around the stator to form an electromagnetic field.
- the actuator unit may include and include a vibration sensor. Such a vibration sensor may be formed as an acceleration sensor or the like.
- the guide part 140 is installed on a part of the housing part.
- the guide part 140 is formed on the outer surface of the slide part to guide the movement of the slide part and the rail part 141, both sides of which are coupled to the support part in parallel with the stator core, to slide along the rail part.
- Block portion 142 is included.
- the damper unit 160 is disposed between the housing unit and the vibration unit to suppress vibration generated during the sliding movement of the slide unit and prevent damage to the slide unit and the like.
- the active vibration reduction device for a machine tool accurately and quickly generates vibration data of an individual device sensed through a sensing unit and a unit having an excitation having a size and direction opposite to each other, thereby generating vibration generated in an individual device.
- the active vibration reduction device for a machine tool accurately and quickly generates vibration data of an individual device sensed through a sensing unit and a unit having an excitation having a size and direction opposite to each other, thereby generating vibration generated in an individual device.
- a plurality of excitation units of the active vibration reduction device of the machine tool are arranged in one individual device, and multi-degree-of-freedom excitation can be generated according to the control of the control unit. That is, as shown in FIG. 8, in the active vibration reduction device for a machine tool according to another embodiment of the present invention, in the excitation unit 100', the first excitation unit 101 and the second excitation unit 102 are mutually Arranged orthogonally, the first excitation unit generates the opposite excitation in the Y-axis direction to the vibration of the individual device in the Y-axis direction, and the second excitation unit generates the opposite excitation in the Z-axis direction to the vibration of the individual device in the Z-axis direction.
- the active vibration reduction method of a machine tool according to the present invention includes data storage step (S1), sensing step (S2), confirmation step (S3), comparison step (S4), speed calculation step (S5), excitation calculation step (S6). , a current calculation step (S7), a judgment step (S8), a processing step (S9), and a feedback step (S10).
- the overall operating principle, control method and equipment configuration of the active vibration reduction method for a machine tool according to the present invention are the same as those of the above-described active vibration reduction device for a machine tool according to the present invention, and the differences will be described below.
- the vibration data of each individual device constituting the machine tool that generates vibration during machine tool operation and the unit with the opposite excitation are actively changed in real time and generated automatically in real time. to save data for reduction.
- the excitation unit is installed adjacent to the vibration generating part of the installed individual device to sense the vibration of the individual device through the sensing unit.
- the comparison unit compares the sensed value with the previously stored reference value.
- the speed calculation unit calculates the speed of the individual device according to the sensing result, confirmation result, reference result, and pre-stored data.
- the calculation unit having the excitation value to be generated by the excitation unit according to the sensing result, the confirmation result, the comparison result, the speed calculation result, and the pre-stored data is calculated.
- the current calculation unit calculates a current value to be transmitted to the excitation unit according to the sensing result, the confirmation result, the comparison result, the excitation calculation result, and the previously stored data.
- the direction of excitation to be generated in the excitation unit is determined according to the sensing result, the confirmation result, the comparison result, the current calculation result, and the previously stored data.
- the excitation information generated by the excitation unit is fed back.
- the active vibration reduction method of a machine tool simply and quickly adjusts the current and direction transmitted to the excitation unit to quickly and accurately automatically control the vibration intensity and direction of vibration generated from the excitation unit.
- Processing productivity can be improved by minimizing non-processing time due to analysis and maintenance for vibration reduction according to the dynamic characteristics status that is changed in real time in individual devices.
- a sensing value is transmitted to a control unit according to an acceleration signal.
- the comparison unit compares the sensed value with the reference value.
- the speed calculator calculates the speed by integrating the vibration signal according to the acceleration signal, and the speed calculator calculates the excitation value by multiplying the speed by the gain.
- the current calculation unit calculates the current value through Equation 1.
- the determination unit determines the generation direction of vibration by determining the vibration direction of the corresponding individual device.
- the processing unit transmits a signal to the actuator unit according to the current value calculated through the current calculation unit and the excitation generation direction determined through the determination unit
- the current value calculated by the actuator unit according to the signal transmitted to the actuator unit determines the current input and output directions.
- a current is passed through the stator to form an electromagnetic field.
- the slide part slides back and forth along the rail part through the block part in the direction determined by the judgment part, and the vibration generated in the individual device and the intensity opposite to each other Vibration of individual devices is reduced by generating directional excitation to offset the vibration of individual devices.
- the feedback information on the excitation generated in the sliding unit is transmitted to the feedback unit of the reduction unit, and the confirmation unit continuously checks the information of the feedback unit and the information sensed in real time by the sensing unit to confirm the presence or absence of vibration and the vibration generated in the individual device. Vibration of individual devices is suppressed by actively changing the intensity and direction of excitation to continuously respond to the intensity and direction of vibration.
- FIG. 13 shows the case where the active vibration reduction device of the machine tool according to the present invention operates (black solid line) and does not operate (blue solid line) when the Z-axis position is 100, and the active type of the machine tool according to the present invention
- the vibration reduction device worked it was confirmed that the vibration was reduced by 63.1% (see the arrow) in the spindle, which is an individual device.
- FIG 14 shows the machine tool according to the present invention when the active vibration reduction device of the machine tool according to the present invention operates (black solid line) and does not operate (blue solid line) when the Z-axis position is 200.
- the active vibration reduction device When the active vibration reduction device is operated, it can be confirmed that the vibration is reduced by 61.0% (see arrow) in the spindle, which is an individual device.
- FIG. 15 shows the machine tool according to the present invention when the active vibration reduction device of the machine tool according to the present invention operates (black solid line) and does not operate (blue solid line) in a state where the Z-axis position is 300.
- the active vibration reduction device worked it was confirmed that the vibration was reduced by 53.0% (see the arrow) in the spindle, which is an individual device.
- the active vibration reduction device and method for a machine tool have vibration data of an individual device sensed through a sensing unit installed adjacent to a vibration generating part of an individual device in which an excitation unit is disposed and an excitation opposite to each other.
- the vibration generated by the individual unit is automatically and actively reduced in real time to improve the machining precision of the machine tool.
- vibration unit 140 guide unit
- actuator unit 200 sensing unit
- control unit 310 data storage unit
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Abstract
Description
Claims (14)
- 공작기계의 작동시에 진동이 발생하는 공작기계를 구성하는 각각의 개별장치에 배치되어 가진을 발생시키는 가진유닛;상기 가진유닛이 배치된 상기 개별장치의 진동발생 부분에 인접하게 설치되어 상기 개별장치의 진동을 센싱하는 센싱부; 및상기 가진유닛의 작동을 제어하는 제어유닛;을 포함하고,상기 제어유닛은 상기 센싱부에서 센싱된 상기 개별장치의 진동 데이터에 따라 상기 개별장치의 진동 데이터와 서로 반대되는 가진을 실시간으로 발생시키도록 상기 가진유닛에서 발생되는 가진을 능동적으로 변경시켜 상기 개별유닛에서 발생되는 진동을 실시간으로 자동으로 저감시키는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제1항에 있어서,상기 제어유닛은,상기 센싱부에서 센싱된 상기 개별장치의 진동 데이터에 따라 상기 개별장치의 진동 데이터와 서로 반대되는 가진을 상기 가진유닛이 발생시켜 능동적으로 상기 개별장치의 진동을 자동으로 저감하기 위한 데이터를 저장하는 데이터 저장부;상기 센싱부에서 센싱된 진동 데이터와 상기 데이터 저장부에 저장된 데이터를 분석하여 상기 개별장치의 진동 정보를 분석하는 분석부;상기 분석부의 분석결과와 상기 데이터 저장부에 저장된 데이터를 통해 상기 가진유닛에 의해 발생되는 가진의 세기와 방향을 산출하는 산출부; 및상기 산출부의 산출결과에 따라 상기 가진유닛에서 상기 개별장치와 서로 반대되는 가진을 실시간으로 변경하면서 능동적으로 발생시켜 상기 개별장치의 진동을 자동으로 저감하는 저감부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제2항에 있어서,상기 데이터 저장부는,상기 공작기계의 개별장치에 대한 데이터, 가공프로그램, 및 구동프로그램에 대한 데이터를 저장하는 기본데이터 저장부;각각의 상기 개별장치에 대한 진동 발생을 확인하기 위한 기준값, 각각의 상기 개별장치에 대한 게인값에 대한 데이터를 저장하는 기준데이터 저장부;상기 센싱부에서 센싱된 데이터를 저장하는 센싱데이터 저장부; 및상기 분석부의 분석결과, 상기 산출부의 산출결과, 및 상기 저감부의 저감결과를 실시간으로 저장하는 실시간데이터 저장부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제3항에 있어서,상기 분석부는,상기 센싱부로부터 센싱된 데이터 및 상기 데이터 저장부에 저장된 데이터를 통해 상기 공작기계의 작동시에 각각의 상기 개별장치에서 진동발생 여부를 확인하는 확인부; 및상기 확인부의 확인결과 진동발생으로 확인된 경우에 상기 센싱데이터 저장부에 저장된 상기 개별장치의 실시간 진동 센싱값과 상기 기준데이터 저장부에 저장된 기준값을 비교하는 비교부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제4항에 있어서,상기 산출부는,상기 비교부의 비교결과 상기 센싱값이 상기 기준값을 초과하는 경우에 상기 분석부의 분석결과 및 상기 데이터 저장부에 저장된 데이터에 따라 상기 개별장치의 속도를 계산하는 속도 계산부;상기 분석부의 분석결과, 상기 속도 계산부의 계산결과, 및 상기 데이터 저장부에 저장된 데이터에 따라 상기 가진유닛에서 발생시켜야 하는 가진값을 계산하는 가진 계산부;상기 분석부의 분석결과, 상기 가진 계산부의 계산결과, 및 상기 데이터 저장부에 저장된 데이터에 따라 상기 가진유닛에 전달해야하는 전류값을 계산하는 전류 계산부; 및상기 센싱부의 센싱결과, 상기 분석부의 분석결과, 상기 전류 계산부의 계산결과, 및 상기 데이터 저장부에 저장된 데이터에 따라 상기 가진유닛에서 발생해야하는 가진의 방향을 판단하는 판단부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제5항에 있어서,상기 저감부는,상기 센싱부의 센싱결과, 상기 분석부의 분석결과, 상기 산출부의 산출결과, 및 상기 데이터 저장부에 저장된 데이터에 따라 상기 개별장치의 진동 데이터와 서로 반대되는 진동세기와 진동방향을 갖는 가진을 상기 가진유닛이 발생시키도록 전류 신호를 상기 가진유닛에 전송하는 처리부; 및상기 가진유닛이 가진을 발생시킨 후에 상기 센싱부에서 수신된 센싱 정보와 상기 가진유닛에서 발생된 가진 정보를 피드백 받는 피드백부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제1항에 있어서,상기 가진유닛은,하우징부;상기 하우징부에 고정 설치되어 선택적으로 전자기장을 형성하는 고정부;상기 제어유닛의 제어에 따라 상기 고정부에 인가되는 전류를 전달하는 액츄에이터부;상기 하우징부의 일부에 설치되는 가이드부; 및상기 액츄에이터부를 통해 인가되는 전류값에 의해 특정한 전자기장이 형성된 경우에 가진을 발생시키기 위해 상기 가이드부에 슬라이딩 이동 가능하게 결합 설치되는 진동부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제7항에 있어서,상기 가진유닛은,상기 하우징부와 상기 진동부 사이에 배치되는 댐퍼부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제8항에 있어서,상기 하우징부는,상기 개별장치에 결합 설치되는 베이스부; 및상기 베이스부의 양측에서 연장 형성되어 상기 고정부와 상기 가이드부를 서포트하는 서포트부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제9항에 있어서,상기 고정부는,상기 서포트부에 양측이 고정 결합되는 스테이터 코어; 및상기 스테이터 코어의 외주면을 둘러싸면서 코일이 감겨지는 스테이터;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제10항에 있어서,상기 진동부는,내부에 상기 고정부를 수용하면서 소정의 무게를 갖도록 형성되는 슬라이드부; 및상기 스테이터와 소정 간격 이격되도록 상기 슬라이드부의 내측면에 고정 설치되는 영구자석;을 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제11항에 있어서,상기 가이드부는,상기 스테이터 코어와 평행하도록 상기 서포트부에 양측이 결합되는 레일부; 및상기 슬라이드부의 이동을 가이드하기 위해 상기 슬라이드부의 외측면에 형성되어 상기 레일부를 따라 슬라이딩 이동하는 블럭부;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 제1항에 있어서,상기 가진유닛은 1개의 개별장치에 복수개로 배치되어 상기 제어유닛의 제어에 따라 다자유도 가진을 발생시키는 것을 특징으로 하는 공작기계의 능동형 진동 저감 장치.
- 공작기계의 작동시에 진동이 발생하는 공작기계를 구성하는 각각의 개별장치의 진동 데이터와 서로 반대되는 가진을 가진유닛에서 능동적으로 실시간으로 변경하면서 발생시켜 상기 개별유닛에서 발생되는 진동을 실시간으로 자동으로 저감하기 위한 데이터를 저장하는 단계;상기 가진유닛이 설치된 상기 개별장치의 진동발생 부분에 인접하게 설치되어 상기 개별장치의 진동을 센싱하는 단계;상기 개별장치의 진동 발생 여부를 확인하는 단계;확인 결과 상기 개별장치에서 진동이 발생한 경우 센싱값과 기저장된 기준값을 비교하는 단계;비교결과 센싱값이 기준값을 초과하는 경우에 센싱 결과와 확인 결과와 기준결과 및 기저장된 데이터에 따라 상기 개별장치의 속도를 계산하는 단계;센싱 결과, 확인 결과, 비교 결과, 속도 계산 결과, 및 기저장된 데이터에 따라 상기 가진유닛에서 발생시켜야 하는 가진값을 계산하는 단계;센싱 결과, 확인 결과, 비교 결과, 가진 계산 결과, 및 기저장된 데이터에 따라 상기 가진유닛에 전달해야하는 전류값을 계산하는 단계;센싱 결과, 확인 결과, 비교 결과, 전류 계산 결과, 및 기저장된 데이터에 따라 상기 가진유닛에서 발생해야하는 가진의 방향을 판단하는 단계; 및센싱 결과, 확인 결과, 비교 결과, 전류 계산 결과, 판단 결과, 및 기저장된 데이터에 따라 상기 개별장치의 진동 데이터와 서로 반대되는 진동세기와 진동방향을 갖는 가진을 상기 가진유닛이 발생시키도록 상기 가진유닛에 전류 신호를 전송하여 가진을 발생시키는 단계;를 포함하는 것을 특징으로 하는 공작기계의 능동형 진동 저감 방법.
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| US18/711,888 US20250028297A1 (en) | 2021-11-24 | 2022-09-23 | Active vibration reduction device and method of machine tool |
| EP22898811.9A EP4420828A4 (en) | 2021-11-24 | 2022-09-23 | DEVICE AND METHOD FOR ACTIVE VIBRATION REDUCTION FOR MACHINE TOOLS |
| CN202280078111.7A CN118302269A (zh) | 2021-11-24 | 2022-09-23 | 机床的主动减振装置及减振方法 |
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| KR1020210162847A KR20230076178A (ko) | 2021-11-24 | 2021-11-24 | 공작기계의 능동형 진동 저감 장치 및 저감 방법 |
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| CN117620755A (zh) * | 2024-01-26 | 2024-03-01 | 山东豪迈机械制造有限公司 | 一种容器管箱水纹线加工装置 |
| EP4653722A1 (en) * | 2024-05-23 | 2025-11-26 | RTX Corporation | Harmonics disruptor |
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Also Published As
| Publication number | Publication date |
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| EP4420828A4 (en) | 2025-08-27 |
| EP4420828A1 (en) | 2024-08-28 |
| CN118302269A (zh) | 2024-07-05 |
| US20250028297A1 (en) | 2025-01-23 |
| KR20230076178A (ko) | 2023-05-31 |
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