WO2016056499A1 - Dispositif de mesure d'épaisseur de plaque par ultrasons, machine-outil équipée de celui-ci, et procédé de mesure d'épaisseur de plaque par ultrasons - Google Patents

Dispositif de mesure d'épaisseur de plaque par ultrasons, machine-outil équipée de celui-ci, et procédé de mesure d'épaisseur de plaque par ultrasons Download PDF

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Publication number
WO2016056499A1
WO2016056499A1 PCT/JP2015/078165 JP2015078165W WO2016056499A1 WO 2016056499 A1 WO2016056499 A1 WO 2016056499A1 JP 2015078165 W JP2015078165 W JP 2015078165W WO 2016056499 A1 WO2016056499 A1 WO 2016056499A1
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WO
WIPO (PCT)
Prior art keywords
ultrasonic
plate thickness
thickness measuring
workpiece
ultrasonic plate
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PCT/JP2015/078165
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English (en)
Japanese (ja)
Inventor
潤 江藤
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三菱重工業株式会社
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Publication of WO2016056499A1 publication Critical patent/WO2016056499A1/fr

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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
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • 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
    • B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness

Definitions

  • the present invention relates to an ultrasonic plate thickness measuring apparatus that measures the thickness of a workpiece with ultrasonic waves, a machine tool equipped with the ultrasonic plate thickness measuring device, and an ultrasonic plate thickness measuring method.
  • an ultrasonic probe and a temperature sensor are connected by wire, and the plate thickness at a measurement point is measured based on the measurement result of the reflection time of the ultrasonic wave emitted from the ultrasonic probe.
  • a portable terminal that measures the plate temperature at the measurement point based on the measurement result of the temperature sensor, and a host computer that is wired or wirelessly connected to the portable terminal and transfers data from the portable terminal to be freely transmitted and received.
  • the portable terminal is configured to include a storage unit that stores an address (coordinates) of a measurement point in association with a plate thickness and a plate temperature at the measurement point.
  • Patent Document 2 there is known one in which a wireless touch probe is attached to the spindle of an NC machine tool instead of a tool.
  • the touch probe is brought into contact with the work set on the table, and a contact signal at that time is sent to the control unit of the NC machine tool to measure the position and dimensions of the work.
  • the touch probe of Patent Document 2 since the touch probe of Patent Document 2 is attached to the spindle of a machine tool, it can automatically measure the dimensions of a workpiece at a plurality of measurement points. In addition, since the measurement data can be sent to the control unit for automatic processing, measurement work and data processing are easy.
  • the thin plate when the workpiece is a thin plate such as an aircraft outer plate, the thin plate inevitably floats up from the table due to the characteristics of the thin plate or the influence of the molding shape, and from the predetermined starting point coordinates to the contact point to the workpiece. There is a problem that the touch probe using the distance of the distance cannot accurately measure the thickness.
  • the thin plate is measured while being fixed by applying a negative pressure vacuum on the table. However, since the suction force of the negative pressure vacuum is limited, the lift of the thin plate cannot be completely suppressed.
  • an ultrasonic probe in order to accurately measure the thickness of a thin plate.
  • a tool mounting portion such as a spindle of a machine tool and brought into contact with the workpiece
  • there is a method of supplying a contact medium applied between the ultrasonic probe and the workpiece It becomes a problem. For this reason, there has never been an example in which an ultrasonic probe is provided on a spindle of a machine tool or the like.
  • the present invention has been made in view of such circumstances, and it is possible to attach an ultrasonic probe to a tool mounting portion of a machine tool so that the thickness of a workpiece such as a thin plate can be accurately measured.
  • An object is to provide a sonic plate thickness measuring device, a machine tool equipped with the same, and an ultrasonic plate thickness measuring method.
  • the ultrasonic plate thickness measuring apparatus the machine tool including the ultrasonic plate thickness measuring device, and the ultrasonic plate thickness measuring method according to the present invention employ the following means.
  • the ultrasonic plate thickness measuring apparatus is provided in a machine tool in which a plurality of types of replaceable tools can be selectively attached to a tool attachment portion to exceed the thickness of the workpiece.
  • This ultrasonic plate thickness measuring device is for measuring the ultrasonic wave, and is provided with an attachment / detachment engagement portion engaged with and fixed to the tool attachment portion, and an ultrasonic wave provided at the tip of the attachment / detachment engagement portion.
  • An ultrasonic plate thickness measuring unit that transmits an ultrasonic wave while contacting a probe with the surface of the workpiece, detects an echo wave, and measures the thickness of the workpiece, and the machine tool includes the The coolant supplied when machining the workpiece with an exchangeable tool is used as a contact medium for improving the contact state between the ultrasonic probe and the surface of the workpiece during thickness measurement.
  • the ultrasonic plate thickness measuring apparatus having the above-described configuration can be attached to the tool attachment portion in the same manner as other replaceable tools by engaging and fixing the attachment / detachment engagement portion to the tool attachment portion of the machine tool.
  • the ultrasonic plate thickness measuring device attached to the tool mounting portion in this way transmits the ultrasonic wave by bringing the ultrasonic probe into contact with the surface of the work piece, and detects the echo wave, thereby detecting the thickness of the work piece. Measure the thickness.
  • coolant supplied when the machine tool cuts the surface of the workpiece with the exchangeable tool is supplied, and this coolant is directly contacted between the ultrasonic probe and the surface of the workpiece. Used as a contact medium to improve the state.
  • the coolant supplied when the machine tool performs the cutting process is used as the contact medium, so that the problem of supplying the contact medium, which has been a problem in the past, is solved, and the ultrasonic probe is used for the machine tool. It can be attached to the tool attachment portion, and the thickness of a workpiece such as a thin plate can be accurately measured.
  • the ultrasonic plate thickness measuring unit may wirelessly transmit measurement data of the thickness of the workpiece to the control unit.
  • the measured plate thickness data is wirelessly transmitted to the control unit and can be automatically processed, thereby facilitating measurement work and data processing.
  • the attachment / detachment engagement portion has the same shape as that provided in the replaceable tool. As a result, compatibility with other replaceable tools can be obtained, and replacement work can be facilitated.
  • a fluid ejecting unit that ejects the auxiliary fluid in the vicinity of the probe may be further provided.
  • the auxiliary fluid such as coolant and blow air supplied from the auxiliary fluid supply passage formed inside the tool mounting portion of the machine tool is fluidized through the communication passage formed in the ultrasonic plate thickness measuring device. It is injected from the injection unit to the vicinity of the ultrasonic probe. For this reason, auxiliary fluid such as coolant and blow air can be reliably injected in the vicinity of the ultrasonic probe, and the ultrasonic probe and the workpiece are reliably cleaned, and the contact state between the ultrasonic probe and the workpiece is improved. Thus, accurate plate thickness measurement can be performed.
  • the ultrasonic probe is biased in a direction protruding from the ultrasonic plate thickness measuring unit toward the workpiece via an impact absorbing mechanism.
  • the impact force or pressing force is absorbed by the impact absorbing mechanism.
  • the impact force and the pressing force are absorbed by the ultrasonic probe urged in the direction protruding from the ultrasonic plate thickness measuring unit toward the workpiece by the shock absorbing mechanism being retracted to the ultrasonic plate thickness measuring unit. For this reason, damage to the ultrasonic probe and the workpiece surface can be prevented, and the ultrasonic probe can always be pressed against the workpiece surface with a uniform surface pressure for accurate plate thickness measurement.
  • the machine tool according to the second aspect of the present invention includes any one of the above-described ultrasonic plate thickness measuring devices.
  • the ultrasonic plate thickness measuring device can be attached to the tool mounting portion in the same manner as other replaceable tools, and the thickness of the workpiece can be accurately measured while diverting the coolant as a contact medium. .
  • the ultrasonic plate thickness measuring method is an ultrasonic plate thickness measuring device in the tool mounting portion in a machine tool in which a plurality of types of replaceable tools can be selectively mounted on the tool mounting portion.
  • the thickness of the workpiece is measured ultrasonically, the coolant supplied when the machine tool is machining the surface of the workpiece with the replaceable tool, the ultrasonic plate thickness It is used as a contact medium for improving the contact state between the ultrasonic probe of the ultrasonic plate thickness measuring device and the surface of the workpiece when the thickness is measured by the measuring device.
  • an ultrasonic plate thickness measuring device is installed at the tool mounting portion of a machine tool, and a coolant is provided between the ultrasonic probe of the ultrasonic plate thickness measuring device and the surface of the workpiece.
  • a coolant is provided between the ultrasonic probe of the ultrasonic plate thickness measuring device and the surface of the workpiece.
  • the ultrasonic probe can be attached to the tool mounting portion of the machine tool and the thin plate It is possible to accurately measure the thickness of workpieces such as.
  • FIG. 1 is a side view of a main shaft and an ultrasonic plate thickness measuring device showing a first embodiment of the present invention. It is a longitudinal cross-sectional view of an ultrasonic plate thickness measuring apparatus (ultrasonic plate thickness measuring unit). It is a flowchart which shows the flow of control of an ultrasonic plate thickness measuring apparatus. It is a side view of the main axis
  • FIG. 1 is a side view of a machining center showing an example of a machine tool equipped with an ultrasonic plate thickness measuring apparatus according to the present invention.
  • the machining center 1 includes a spindle 2 (tool mounting portion) and an automatic tool changer 3.
  • the main shaft 2 extends in the vertical direction, for example, is driven to rotate by a motor (not shown), and can be moved up and down in the axial direction.
  • the automatic tool changer 3 includes a tool magazine 6 that is pivotally supported by a frame 5 and has a disk shape in plan view.
  • the tool magazine 6 has a plurality of tool holding holes 7 along the circumferential direction thereof. Is formed.
  • a plurality of types of replaceable tools 8 and an ultrasonic plate thickness measuring device 9 for measuring the thickness of the workpiece are held in these tool holding holes 7.
  • the tool magazine 6 can be index-rotated by an interval of the tool holding hole 7 by an index motor 11 installed on the frame 5.
  • the replaceable tool 8 and the ultrasonic plate thickness measuring device 9 each include a taper shank 13 (detachable engagement portion). These tapered shanks 13 desirably have the same shape. As shown in FIG. 2, the replaceable tool 8 has a tool portion 15 such as a drill or an end mill connected to the lower portion of the taper shank 13, and the ultrasonic plate thickness measuring device 9 has an ultrasonic plate below the tapered shank 13. A thickness measuring unit 16 is connected. As for the shape of the taper shank 13, a plurality of variations of common standard products such as BT-40, BT-50, and HSK-A100 shown in FIG. 2 are prepared (BT-50 type is illustrated in FIG. 1). ).
  • the male screw 19 formed on the taper shank 13 is screwed to the female screws 17 and 18 formed on the tool unit 15 and the ultrasonic plate thickness measuring unit 16, and both are connected.
  • the tool part 15 and the ultrasonic plate thickness measuring part 16 may be integrally formed.
  • the main shaft 2 is formed with a taper fitting hole 20 along the central axis for closely engaging the replaceable tool 8 and the taper shank 13 of the ultrasonic plate thickness measuring device 9.
  • a pull stud 22 provided at the tip of the taper shank 13 of the replaceable tool 8 and the ultrasonic plate thickness measuring device 9 is held by a clamp 21 provided in the back of the taper fitting hole 20.
  • the spindle 2 has one of a plurality of replaceable tools 8 and an ultrasonic plate thickness measuring device 9 selected and attached. That is, the tool magazine 6 is index-rotated by the index motor 11 so that any one of the selected replaceable tool 8 and the ultrasonic plate thickness measuring device 9 is directly below the main shaft 2, and then the main shaft 2 is lowered. The taper shank 13 is fitted into the taper fitting hole 20. At the same time, the pull stud 22 is held by the clamp 21, and then the main shaft 2 rises. As a result, the selected replaceable tool 8 or ultrasonic plate thickness measuring device 9 is removed from the tool magazine 6 and attached to the spindle 2.
  • FIG. 3 is a side view of the main shaft 2 and the ultrasonic plate thickness measuring device 9 showing the first embodiment of the present invention
  • FIG. 4 is a longitudinal section of the ultrasonic plate thickness measuring device 9 (ultrasonic plate thickness measuring unit 16).
  • the ultrasonic plate thickness measuring unit 16 of the ultrasonic plate thickness measuring device 9 includes a columnar base casing 23 that is a portion coupled to the taper shank 13, and a bottom surface of the base casing 23.
  • a shock absorber housing 24 having a small one-stage diameter connected thereto by screw connection or the like
  • an ultrasonic probe 25 (transducer) provided so as to protrude from the lower surface of the shock absorber housing 24.
  • the ultrasonic probe 25 transmits an ultrasonic wave while contacting the surface of the workpiece W, detects the reflected sound wave, and measures the thickness of the workpiece W.
  • a waterproof O-ring 27 is formed between the periphery of the female screw 18 formed on the base housing 23 and screwed into the male screw 19 of the taper shank 13, and between the base housing 23 and the shock absorber housing 24. , 28 are interposed.
  • An impact absorbing mechanism 31 is provided inside the impact absorbing unit housing 24.
  • the shock absorbing mechanism 31 is configured as follows. First, the ultrasonic probe 25 has a stepped columnar shape, and is inserted into a sliding cylinder 32 formed at the center of the shock absorber housing 24 so as to be slidable in the axial direction, and is formed on itself. 33 can be lowered until it abuts on the inner peripheral flange 34 at the lower end of the sliding cylinder 32, and the position of the tip at this time becomes the protruding position 25a shown in FIG.
  • a substantially disk-shaped fixed guide 36 is provided on the upper portion of the sliding cylinder 32, and the outer periphery of the cylindrical portion 37 formed on the lower surface thereof is screwed into the upper inner periphery of the sliding cylinder 32, for example.
  • the ultrasonic probe 25 can be raised until its upper surface comes into contact with the lower end of the cylindrical portion 37. At this time, the distal end portion of the ultrasonic probe 25 is in a position where it is retracted above the lower end surface of the shock absorber housing 24. Actually, the tip of the ultrasonic probe 25 pressed from the outside rises to the same height as the lower end surface of the shock absorber housing 24, and the position of the tip at this time becomes the retracted position 25b shown in FIG. .
  • a coil spring 38 is mounted between the ultrasonic probe 25 and the fixed guide 36, and the ultrasonic probe 25 is always on the protruding position 25 a side, that is, from the ultrasonic plate thickness measuring unit 16 by the biasing force. It is urged in the direction that protrudes to the side. For this reason, when the thickness of the workpiece W is measured by the ultrasonic plate thickness measuring device 9, when the ultrasonic probe 25 is strongly abutted against the surface of the workpiece W, the ultrasonic probe 25 is in the protruding position. The shock is absorbed by sliding from 25a to the retracted position 25b or higher than the retracted position 25b, and damage or failure of the ultrasonic probe 25 or damage to the surface of the workpiece W is avoided.
  • a flexible waterproof cover 40 is mounted between the distal end portion of the shock absorbing portion housing 24 and the distal end base portion of the ultrasonic probe 25, and the outer peripheral portion and the inner peripheral portion of the waterproof cover 40 are They are fixed to the shock absorber casing 24 and the ultrasonic probe 25 by O-rings 41 and 42 (or snap rings, respectively).
  • This waterproof cover 40 prevents coolant, which will be described later, from entering the inside of the ultrasonic plate thickness measuring device 9 from between the shock absorbing unit casing 24 and the ultrasonic probe 25.
  • the shock absorbing mechanism 31 is configured as described above.
  • a wireless communication unit 45 is built in the base housing 23, and a communication cable 46 extending from the wireless communication unit 45 passes through the center of the fixed guide 36 and is connected to the ultrasonic probe 25.
  • the communication cable 46 has a sufficient length and does not hinder the ultrasonic probe 25 from sliding between the protruding position 25a and the retracted position 25b.
  • Measurement data measured by the ultrasonic probe 25 is transmitted to the wireless communication unit 45 via the communication cable 46, and the wireless communication unit 45 wirelessly transmits the measurement data to the control unit 48 (see FIG. 3).
  • the control unit 48 may be incorporated in or programmed in the control device of the machining center 1 itself, or may be a separate and dedicated one.
  • the main shaft 2 is formed with an auxiliary fluid supply passage 51 for supplying auxiliary fluid such as coolant and blow air.
  • the auxiliary fluid supply passage 51 is branched from two passages 51a and 51b that connect between a coolant supply portion 52 and a blow air supply portion 53 provided in the machining center 1, for example, and an intermediate portion of the passage 51a.
  • a passage 51c connected to one or more main shaft injection nozzles 55 provided at the tip, and a passage 51d branched from an intermediate portion of the passage 51b and communicated with a passage 13a formed inside the taper shank 13 are provided.
  • the main shaft injection nozzle 55 is angled so as to inject coolant, blow air or the like in the vicinity of the cutting edge of the replaceable tool 8 or in the vicinity of the ultrasonic probe 25 of the ultrasonic plate thickness measuring device 9.
  • a communication passage 57 formed in the ultrasonic plate thickness measuring device 9 is waterproof as shown in FIG. Communication is made through an O-ring 58.
  • the communication passage 57 is connected to one or more measurement injection nozzles 60 (fluid injection units) provided on the lower surface of the base housing 23.
  • the measurement spray nozzle 60 is angled so as to spray the auxiliary fluid in the immediate vicinity of the ultrasonic probe 25.
  • the coolant supplied when the replaceable tool 8 is attached to the main spindle 2 and the workpiece W is cut the ultrasonic plate thickness measuring device 9 is attached to the main spindle 2 instead of the replaceable tool 8. Also supplied when measuring the thickness of the workpiece W.
  • the coolant is used as it is as a contact medium (measuring auxiliary liquid) for improving the contact state between the ultrasonic probe 25 of the ultrasonic plate thickness measuring device 9 and the surface of the workpiece W.
  • the ultrasonic wave is difficult to propagate in the air and reflects at the boundary with the surface of the workpiece W, a small amount of air is prevented so that no air is interposed between the ultrasonic probe 25 and the surface of the workpiece W. It is necessary to supply (apply) the contact medium in advance, and the coolant serves as the contact medium. As described above, the liquid coolant is interposed between the ultrasonic probe 25 and the surface of the workpiece W, so that the air is prevented from interfering, the transmission rate of the ultrasonic wave is remarkably improved, and the measurement accuracy is improved.
  • a plate thickness measurement instruction is issued (step S1), and then the ultrasonic plate thickness measuring device 9 is selected and attached to the spindle 2 (step S2).
  • the ultrasonic plate thickness measuring apparatus 9 is turned on (step S3).
  • the power may be turned on at the same time as the ultrasonic plate thickness measuring device 9 is mounted on the main shaft 2.
  • the position of the spindle 2 (or the position of the workpiece W) is changed so that the ultrasonic plate thickness measuring device 9 comes directly above the measurement point for measuring the thickness of the workpiece W (step S4).
  • the spindle 2 When the ultrasonic plate thickness measuring device 9 comes right above the measurement point of the workpiece W, the spindle 2 is lowered to such an extent that the ultrasonic probe 25 does not contact the workpiece W, and the spindle injection nozzle 55 or the measurement injection nozzle 60
  • the coolant is sprayed first from at least one, and then blow air is sprayed to clean the surface of the workpiece W and the ultrasonic probe 25 (step S5).
  • the number of nozzles to be ejected is appropriately set according to the degree of foreign matter removal. For example, you may inject from both the main axis
  • the cleaning may be performed by properly using the jet for mixing the coolant and the blow air and the jet not for mixing, or combining them in a cycle.
  • step S6 Even after the cleaning is completed, the supply of the coolant is continued (step S6). In this state, the spindle 2 is lowered (or until the ultrasonic probe 25 of the ultrasonic plate thickness measuring device 9 comes into contact with the measurement point of the workpiece W (or The workpiece W is raised) (step S7), and the thickness of the workpiece W is measured (step S8). Then, the measured data is wirelessly transmitted to the control unit 48 (step S9).
  • step S10 it is determined whether or not the measured data is within an appropriate range assigned in advance (step S10), and if it is within the appropriate range (step S10 ⁇ Yes), the measurement data is stored in the storage unit. (Step S11). Thereafter, the supply of the coolant is stopped (step S12), and it is then determined whether or not the measurement is finished (step S13). If the measurement is completed (step S13 ⁇ Yes), the ultrasonic plate thickness measuring apparatus 9 is turned off (step S14), and the control is completed. If the measurement has not been completed (step S13 ⁇ No), an instruction for the next measurement point is issued (step S15), the process returns to step S4, and the ultrasonic plate thickness measuring device 9 (main shaft 2) moves to the next measurement point. To do. Then, the routine from step S4 to S13 is repeated.
  • step S10 if the measured data deviates from the pre-assigned appropriate range (step S10 ⁇ No), a remeasurement instruction is issued (step S16), and the number of remeasurements so far is a predetermined number. It is determined whether or not (for example, four times) or more (step S17). If the number of remeasurements is within the predetermined number (step S17 ⁇ No), the process proceeds to step S5, and thereafter, the routines from steps S5 to S10, S16, and S17 are repeated. In step S17, if the number of re-measurements is equal to or greater than the predetermined number (step S17 ⁇ Yes), the measurement is stopped and an error is displayed (step S18).
  • the ultrasonic plate thickness measuring device 9 can be attached to the main shaft 2 in the same manner as the other replaceable tools 8 by the taper shank 13 being engaged and fixed to the main shaft 2 of the machining center 1. .
  • the ultrasonic plate thickness measuring device 9 attached to the spindle 2 in this way transmits the ultrasonic wave by bringing the ultrasonic probe 25 into contact with the surface of the workpiece W, and detects the reflected sound wave.
  • the measurement data is wirelessly transmitted to the control unit 48.
  • coolant supplied when the machining center 1 cuts the surface of the workpiece W with the replaceable tool 8 is supplied, and this coolant is used as it is for the surface of the ultrasonic probe 25 and the workpiece W. It is used as a contact medium that improves the contact state between the two.
  • the coolant supplied when cutting is performed by the machining center 1 is used as a contact medium used when the ultrasonic plate thickness measuring device 9 measures the ultrasonic plate thickness.
  • the problem of supplying the contact medium which has been a problem in the past, is solved, and the ultrasonic probe 25 can be attached to the spindle 2 of a machine tool such as the machining center 1 to reduce the thickness of the workpiece W such as a thin plate. It can measure with high accuracy. Since the measured plate thickness data is wirelessly transmitted to the control unit 48 and can be automatically processed, measurement work and data processing are easy.
  • the ultrasonic plate thickness measuring device 9 is a measurement that injects coolant and blow air from the communication passage 57 to the vicinity of the ultrasonic probe 25 through the communication passage 57 that communicates with the auxiliary fluid supply passage 51 formed inside the main shaft 2. And an injection nozzle 60. Then, auxiliary fluid such as coolant and blow air supplied from the auxiliary fluid supply passage 51 is jetted from the measurement jet nozzle 60 to the vicinity of the ultrasonic probe 25 through the communication passage 57.
  • auxiliary fluid such as coolant and blow air can be reliably jetted in the vicinity of the ultrasonic probe 25, the ultrasonic probe 25 and the workpiece W can be reliably cleaned, and the ultrasonic probe 25 and the workpiece W It is possible to improve the contact state of the plate and perform accurate plate thickness measurement.
  • the ultrasonic probe 25 is constantly urged in the direction protruding from the ultrasonic plate thickness measuring unit 16 toward the workpiece W (the protruding position 25a side) by the urging force of the coil spring 38 provided in the shock absorbing mechanism 31. Yes. For this reason, when the ultrasonic probe 25 abuts against the surface of the workpiece W with an excessive strength, the ultrasonic probe 25 is retracted toward the ultrasonic plate thickness measuring unit 16 side (retraction position 25b side) to cause an impact. Force and pressure are absorbed. Therefore, the ultrasonic probe 25 and the surface of the workpiece W can be prevented from being damaged, and the ultrasonic probe 25 can always be pressed against the surface of the workpiece W with a uniform surface pressure to perform accurate plate thickness measurement.
  • the ultrasonic plate thickness measuring device 9 is attached to the main shaft 2 in the same manner as other replaceable tools 8, and the coolant is used as a contact medium.
  • the thickness of the workpiece W can be measured with high accuracy, and the convenience is high.
  • FIG. 6 is a side view of an ultrasonic plate thickness measuring apparatus showing the second embodiment of the present invention.
  • the ultrasonic plate thickness measuring device 9 ′ is attached to the main shaft 2 ′ of the machining center 1 ′.
  • the main shaft 2 ′ is not provided with the main shaft injection nozzle 55 (see FIG. 3) provided on the main shaft 2 of the first embodiment.
  • the ultrasonic plate thickness measuring device 9 ′ is not provided with the measurement spray nozzle 60 of the first embodiment. Instead, a flexible hose 65 that supplies coolant from the outside is provided. Since the other configuration is the same as that of the first embodiment, the same reference numerals are given to the respective parts and the description thereof is omitted.
  • the thickness of the workpiece W is increased.
  • the coolant is supplied from the flexible hose 65.
  • the action and effect of the coolant is the same as in the first embodiment, and the coolant is used as a contact medium (measuring auxiliary liquid) when measuring the thickness of the workpiece W. In this way, the coolant need not necessarily be supplied by providing the injection nozzle on the main shaft 2 ′ or the ultrasonic plate thickness measuring device 9 ′.
  • the ultrasonic plate thickness measuring devices 9 and 9 ′ As described above, according to the ultrasonic plate thickness measuring devices 9 and 9 ′, the machining centers 1 and 1 ′ including the ultrasonic plate thickness measuring devices 9 and 9 ′, and the ultrasonic plate thickness measuring method according to the present embodiment, contact that has been difficult in the related art.
  • the problem of supplying the medium can be solved by using a coolant supplied at the time of cutting. For this reason, the ultrasonic probe 25 can be attached to the main shaft 2 of the machining center 1, and the thickness of the workpiece W such as a thin plate can be accurately measured.
  • the present invention is not limited only to the configuration of the above-described embodiment, and changes and improvements can be added as appropriate. Embodiments with such changes and improvements are also included in the scope of the present invention. .
  • the ultrasonic plate thickness measuring devices 9 and 9 ′ are attached to the main shafts 2 and 2 ′ of the machining centers 1 and 1 ′.
  • the present invention can be widely applied to many other types of machine tools such as lathes, grinders, drilling machines, lathes, turning centers, multi-task machines, and multi-axis robots.
  • the tool attachment portion to which the ultrasonic plate thickness measuring devices 9 and 9 ′ are attached is not limited to the rotary spindle, but may be a tool post for fixing a tool, a drill chuck, or the like.

Abstract

L'invention concerne un dispositif de mesure d'épaisseur de plaque par ultrasons (9) qui est pourvu d'une tige conique (13) ayant la même forme que la tige conique d'un outil interchangeable qui est sélectivement fixé à l'arbre principal (2) d'une machine-outil et d'une unité de mesure d'épaisseur de plaque à ultrasons (16) qui est disposée sur cette tige conique (13), émet des ultrasons pendant qu'une sonde à ultrasons (25) au niveau de l'extrémité avant de celle-ci est amenée à être en contact avec la surface d'une pièce (W), détecte les ondes d'écho ainsi obtenues, mesure l'épaisseur de la pièce (W), et transmet de manière sans fil les données de mesure obtenues à une unité de commande (48). Un fluide de refroidissement fourni lorsque la machine-outil coupe la pièce (W) à l'aide de l'outil interchangeable est utilisé en tant que milieu de contact pour améliorer l'état de contact entre la sonde à ultrasons (25) et la surface de la pièce (W) pendant la mesure de l'épaisseur. Le fluide de refroidissement est éjecté d'une buse d'éjection (55) d'arbre principal prévue sur l'arbre principal (2) et d'une buse d'éjection de mesure (60) prévue sur le dispositif de mesure d'épaisseur de plaque par ultrasons (9).
PCT/JP2015/078165 2014-10-07 2015-10-05 Dispositif de mesure d'épaisseur de plaque par ultrasons, machine-outil équipée de celui-ci, et procédé de mesure d'épaisseur de plaque par ultrasons WO2016056499A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014206304A JP2016075584A (ja) 2014-10-07 2014-10-07 超音波板厚計測装置、これを備えた工作機械、および超音波板厚計測方法
JP2014-206304 2014-10-07

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WO2016056499A1 true WO2016056499A1 (fr) 2016-04-14

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Cited By (5)

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CN108375357A (zh) * 2018-04-13 2018-08-07 广东省特种设备检测研究院惠州检测院 一种具有超声波检测探头的测厚装置
CN108645358A (zh) * 2018-04-26 2018-10-12 大连理工大学 一种超声在机测厚接触状态控制方法
DE112016007342T5 (de) 2016-11-16 2019-06-27 Makino Milling Machine Co., Ltd. Werkstückdickenmessvorrichtung und Bearbeitungsmaschine
TWI740724B (zh) * 2020-11-20 2021-09-21 財團法人工業技術研究院 超音波刀把及超音波刀把冷卻與切屑導流系統
US11287400B2 (en) * 2019-03-27 2022-03-29 Dalian University Of Technology Large-panel ultrasonic on-machine non-contact scanning thickness measurement equipment and thickness measurement method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102029681B1 (ko) * 2017-12-12 2019-10-10 한국생산기술연구원 유로를 구비한 초음파 진동 절삭 장치
CN112212676B (zh) * 2020-09-29 2022-06-07 安德里茨（中国）有限公司 料厚测量机构、闭环控制布料装置及烘干机
KR20230061092A (ko) * 2021-10-28 2023-05-08 (주)피아이이 초음파 워터폴 방식 검사장치
KR20230061093A (ko) * 2021-10-28 2023-05-08 (주)피아이이 유로 길이 가변형 초음파 워터폴 방식 검사장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63209U (fr) * 1986-06-18 1988-01-05
JPH02110309A (ja) * 1988-10-19 1990-04-23 Toshiba Mach Co Ltd 超音波厚さ計を用いた測定方法およびその測定装置
WO2010020940A1 (fr) * 2008-08-19 2010-02-25 Breton Spa Procédé et dispositif de mesure et de vérification de l'épaisseur de structures
JP2010052103A (ja) * 2008-08-29 2010-03-11 Mitsubishi Heavy Ind Ltd 表面粗さの測定方法、表面粗さ測定装置及び加工装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63209U (fr) * 1986-06-18 1988-01-05
JPH02110309A (ja) * 1988-10-19 1990-04-23 Toshiba Mach Co Ltd 超音波厚さ計を用いた測定方法およびその測定装置
WO2010020940A1 (fr) * 2008-08-19 2010-02-25 Breton Spa Procédé et dispositif de mesure et de vérification de l'épaisseur de structures
JP2010052103A (ja) * 2008-08-29 2010-03-11 Mitsubishi Heavy Ind Ltd 表面粗さの測定方法、表面粗さ測定装置及び加工装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112016007342T5 (de) 2016-11-16 2019-06-27 Makino Milling Machine Co., Ltd. Werkstückdickenmessvorrichtung und Bearbeitungsmaschine
DE112016007342B4 (de) 2016-11-16 2024-05-08 Makino Milling Machine Co., Ltd. Werkstückdickenmessvorrichtung und Bearbeitungsmaschine
CN108375357A (zh) * 2018-04-13 2018-08-07 广东省特种设备检测研究院惠州检测院 一种具有超声波检测探头的测厚装置
CN108375357B (zh) * 2018-04-13 2024-03-12 广东省特种设备检测研究院惠州检测院 一种具有超声波检测探头的测厚装置
CN108645358A (zh) * 2018-04-26 2018-10-12 大连理工大学 一种超声在机测厚接触状态控制方法
US11287400B2 (en) * 2019-03-27 2022-03-29 Dalian University Of Technology Large-panel ultrasonic on-machine non-contact scanning thickness measurement equipment and thickness measurement method
TWI740724B (zh) * 2020-11-20 2021-09-21 財團法人工業技術研究院 超音波刀把及超音波刀把冷卻與切屑導流系統

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