WO2021193344A1 - Machine-outil et son procédé de commande - Google Patents

Machine-outil et son procédé de commande Download PDF

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Publication number
WO2021193344A1
WO2021193344A1 PCT/JP2021/011049 JP2021011049W WO2021193344A1 WO 2021193344 A1 WO2021193344 A1 WO 2021193344A1 JP 2021011049 W JP2021011049 W JP 2021011049W WO 2021193344 A1 WO2021193344 A1 WO 2021193344A1
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WO
WIPO (PCT)
Prior art keywords
work
spindle
tool
machine tool
residual material
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PCT/JP2021/011049
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English (en)
Japanese (ja)
Inventor
慎太郎 鈴木
野口　賢次
Original Assignee
シチズン時計株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by シチズン時計株式会社 filed Critical シチズン時計株式会社
Priority to JP2022510036A priority Critical patent/JPWO2021193344A1/ja
Publication of WO2021193344A1 publication Critical patent/WO2021193344A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • 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

Definitions

  • the present invention relates to a machine tool for cutting burrs generated at a joint portion between a first work and a second work with a tool, and a control method for the machine tool.
  • Patent Document 1 discloses a technique of detecting data from before the start of joining to the end of joining to determine whether or not there is a misalignment.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a machine tool and a method for controlling a machine tool so that the work after deburring can be quickly selected.
  • the first spindle for rotatably holding the first work, a tool base on which a tool for cutting the first work is mounted, and the first work having the same diameter as the first work.
  • a machine tool including a control unit for removing burrs generated in a joint portion between a second work integrally joined to the first work and the first work by the tool. And, based on the cutting resistance generated when cutting continuously from one of the second workpieces to the other, the misalignment amount of the second workpiece with respect to the integrally joined first workpiece is calculated. And.
  • the amount of misalignment of the second work with respect to the integrally joined first work is the cutting resistance generated when the second work is cut and the cutting generated when the first work is cut. It is characterized in that it is calculated based on resistance.
  • control unit detects the cutting resistance based on the load applied to the tool that continuously cuts from one of the first work and the second work to the other. ..
  • control unit obtains the cutting resistance based on the load applied to the motor that drives the first spindle.
  • the second spindle which is arranged to face the first spindle and holds the second work rotatably, and the second spindle which is arranged between the first spindle and the second spindle and is concentric with the first spindle. It is characterized by further providing a guide bush of.
  • control unit rotates the first work held by the first spindle and the second work held by the second spindle, while the first spindle and the second spindle move together. At least one of the first spindle or the second spindle so as to move relative to each other so that the rear end portion of the second work is pressed against the tip portion of the first work to be frictionally joined. It is characterized by controlling the movement of one side.
  • a first spindle that rotatably holds the first work, a tool stand on which a tool for cutting the first work is mounted, and a tool base that is arranged to face the first spindle and are delivered from the first spindle.
  • a machine tool including a second spindle for rotatably holding a second work having the same diameter as the first work, and a control unit for controlling the operation of the first spindle, the second spindle, and the tool post.
  • a method of controlling a machine in which the first spindle and the second spindle are rotated and relatively moved so that the first spindle and the second spindle approach each other, and the second work.
  • the step of pressing the rear end portion against the tip end portion of the newly supplied first work and frictionally joining the rear end portion, and the burr generated at the joint portion between the second work and the newly supplied first work are described.
  • the first work integrally joined based on the step of removing with a tool and the cutting resistance generated when the tool continuously cuts one of the first work and the second work to the other. It is characterized by including a step of calculating the misalignment amount of the second work and a step of causing the machine tool to perform a work content corresponding to the calculated misalignment amount by the control unit.
  • the present invention can obtain the following effects. Since the control unit calculates the amount of misalignment of the second work with respect to the first work when deburring the joint portion, the degree of misalignment between the first work and the second work can be known during deburring. .. Therefore, it is possible to quickly select an appropriate work after performing this deburring, and it is possible to reduce the manufacturing cost of the product and stabilize the quality.
  • the automatic lathe (machine tool) 1 includes a first spindle 10 and a tool base 31.
  • the first spindle 10 can grip (hold) the work W1 via the first chuck 11 shown in FIG. 3A or the like.
  • the first chuck 11 is configured concentrically with the first spindle 10, and is integrally rotatable together with the first spindle 10.
  • the work W1 is a long bar in the shape of a round bar, and is supplied from the rear end of the first spindle 10 by using a push arrow of a bar feeder.
  • a finger chuck 16 shown in FIG. 3A is provided at the tip of the push arrow, and the finger chuck 16 grips the rear end of the work W1.
  • the first spindle 10 is rotatably supported by the spindle 12 with the Z1 axis direction shown in FIG. 1 as the axis, and is rotationally driven by the power of the spindle motor 13 provided on the spindle 12.
  • the headstock 12 is mounted on the Z1 axial feed mechanism 14 and is movable in the Z1 axial direction.
  • the Z1 axis direction feed mechanism 14 has a Z1 axis rail 14a fixed to the bed 1a and extending in the Z1 axis direction.
  • the Z1 axis rail 14a is equipped with a Z1 axis slider 14b that slides along the Z1 axis direction by the Z1 axis motor 14c.
  • the headstock 12 is installed on the Z1 axis slider 14b.
  • a guide bush 18 for holding a cutting position is provided in front of the headstock 12.
  • the guide bush 18 is supported by a support base 17, and the support base 17 is fixed to the bed 1a.
  • the work W1 is rotatably supported around the Z1 axis by the guide bush 18, and is fed to the front side of the support base 17.
  • the guide bush 18 is provided in front of the first spindle 10 in this way, the material having a length from the first chuck 11 to the guide bush 18 becomes the work residual material W2 that cannot be cut.
  • the material can be effectively used, so that the material cost can be reduced.
  • a moving table 32 is provided on the front side of the support table 17.
  • the moving table 32 moves the tool table 31 in the X1 axis direction orthogonal to the Z1 axis direction, and in the Y1 axis direction orthogonal to the Z1 axis direction and the X1 axis direction.
  • a tool 30 whose tip is oriented in the X1 axis direction is mounted on the tool base 31.
  • the work W1 can be machined by the tool 30 by moving the first spindle 10 in the Z1 axis direction and moving the tool base 31 in the X1 axis direction or the Y1 axis direction.
  • the automatic lathe 1 includes a second spindle 20 at a position facing the first spindle 10.
  • the second spindle 20 can grip (hold) the work residual material W2 via the second chuck 21 shown in FIG. 3A or the like.
  • the second chuck 21 is configured concentrically with the second spindle 20 and is integrally rotatable together with the second spindle 20.
  • the work residual material W2 is, for example, a round bar having the same diameter as the work W1 and is a material left over that cannot be processed by the first spindle 10.
  • the work residual material W2 is, for example, transferred from the first main shaft 10 to the second main shaft 20 and held by the second main shaft 20 via the second chuck 21.
  • the second spindle 20 is rotatably supported by the spindle 22 with the Z2 axis direction parallel to the Z1 axis as the axis, and is rotationally driven by the power of the spindle motor 23 provided on the spindle 22.
  • the headstock 22 is mounted on the Z2 axial feed mechanism 24 and the X2 axial feed mechanism 25, and is movable in the Z2 axial direction and the X2 axial direction.
  • the Z2 axial feed mechanism 24 has, for example, a Z2 axial rail 24a arranged on the X2 axial feed mechanism 25 and extending in the Z2 axial direction.
  • the Z2-axis rail 24a is equipped with a Z2-axis slider 24b that slides along the Z2-axis direction by the Z2-axis motor 24c.
  • the headstock 22 is installed on the Z2-axis slider 24b.
  • the X2 axis direction feed mechanism 25 has, for example, an X2 axis rail 25a fixed to the bed 1a and parallel to the X1 axis direction.
  • the X2-axis rail 25a is equipped with an X2-axis slider 25b that slides along the X2-axis direction by the X2-axis motor 25c.
  • the X2-axis slider 25b is provided with a Z2-axis rail 24a of the Z2-axis direction feed mechanism 24.
  • the rotation of the first spindle 10 and the second spindle 20, the movement of the first spindle 10, the second spindle 20, and the moving table 32 are controlled by the control device 40.
  • the control device 40 has a control unit 40a and an input unit 40b, which are connected via a bus.
  • the control unit 40a is composed of a CPU, a memory, and the like. For example, various programs and data stored in the ROM are loaded into the RAM, and the programs are executed. Thereby, the operation of the automatic lathe 1 can be controlled based on the program.
  • the rotation of the first spindle 10 and the second spindle 20, the movement of the first spindle 10, the second spindle 20, the moving table 32, and the like can be set by a program or by input to the input unit 40b.
  • the control unit 40a has a calculation unit 40c, a comparison unit 40d, and a determination unit 40e.
  • the calculation unit 40c is, for example, based on the cutting resistance generated when the burr B generated at the joint portion between the work residual material W2 and the work W1 is cut by the tool 30, the work residual material W2 with respect to the integrally joined work W1. The amount of misalignment s of is calculated.
  • the comparison unit 40d compares the misalignment amount s calculated by the calculation unit 40c with the first threshold value ⁇ and the second threshold value ⁇ set in advance for selecting the later work.
  • the determination unit 40e receives the comparison result of the comparison unit 40d, and the calculated misalignment amount s exceeds the first threshold value ⁇ , or the calculated misalignment amount s is equal to or less than the first threshold value ⁇ but is the second threshold value. It is determined whether the amount exceeds ⁇ or the calculated misalignment amount s is equal to or less than the second threshold value ⁇ .
  • a plurality of work contents corresponding to the misalignment amount s are stored in advance.
  • FIG. 2 is an operation flowchart including a joining determination
  • FIGS. 3A to 3F are diagrams showing operations related to the joining determination.
  • the length of the work W1 is shortened each time the parting process is performed.
  • the machining to the work W1 progresses and the total length of the work W1 held by the first spindle 10 is shortened to about from the first chuck 11 to the guide bush 18, this shortened portion becomes a work residue that cannot be cut.
  • the automatic lathe 1 passes the short work held by the first spindle 10 to the second spindle 20.
  • the axis of the first spindle 10 and the axis of the second spindle 20 are arranged concentrically, and for example, the second spindle 20 is brought closer to the first spindle 10.
  • the first chuck 11 is opened, and a new work W1 is supplied from the rear of the first spindle 10.
  • the first chuck 11 is closed, and the newly supplied work W1 is held by the first spindle 10 (step S10 in FIG. 2, FIG. 3A).
  • a short work (which will eventually become the work residual material W2) held by the first main shaft 10 is moved from the guide bush 18 to the front side of the support base 17. Extruded. Therefore, the second chuck 21 is closed and the work residual material W2 is held by the second spindle 20 (step S10 in FIG. 2).
  • the second spindle 20 is brought closer to the first spindle 10, and the work residue is used.
  • the rear end portion of W2 is pressed against the tip end portion of the new work W1 to be frictionally joined (step S11 in FIG. 2).
  • frictional heat is generated at the rear end portion of the work residual material W2 and the tip portion of the work W1 due to the speed difference between the rotation speed of the first spindle 10 and the rotation speed of the second spindle 20, and the work is further softened.
  • the rear end portion of the residual material W2 is joined by pressing the front end portion of the work W1, and the work residual material W2 and the work W1 are integrated.
  • FIG. 3B the rotation directions of the first spindle 10 and the second spindle 20 are both shown in the same direction, but since the first spindle 10 and the second spindle 20 need to rotate with a speed difference, the first spindle The 1 spindle 10 may be rotated in the direction opposite to the rotation direction of the second spindle 20. Alternatively, only one of the first spindle 10 and the second spindle 20 may be rotated.
  • the second chuck 21 is opened to release the holding of the work residual material W2 (step S12 in FIG. 2), and the second spindle 20 is separated from the first spindle 10 as shown by the arrow pointing to the left in FIG. 3C.
  • the work W1 is held by the first main shaft 10, and the tip of the work residual material W2 becomes a free end.
  • the burr B generated at the joint portion between the work residual material W2 and the work W1 is cut (removed) by the tool 30 (step S13 in FIG. 2).
  • the tool 30 is arranged, for example, at a position closer to the second chuck 21 than the joint portion between the work residual material W2 and the work W1 in the work residual material W2. Then, the tool 30 is moved to a position closer to the first chuck 11 than the joint portion between the work residual material W2 and the work W1 in the work W1 while setting the predetermined depth of cut and rotating the first spindle 10. As a result, the tool 30 processes the work residual material W2, the joint portion between the work residual material W2 and the work W1, and the work W1 in this order.
  • the control unit 40a detects the cutting resistance generated when the burr B is cut by the tool 30, for example, from the load of the tool 30. Then, the calculation unit 40c determines the amount of misalignment of the work residual material W2 (distance between the axial center of the work W1 and the axial center of the work residual material W2) s with respect to the integrally joined work W1 based on the detected cutting resistance. It is calculated (step S14 in FIG. 2).
  • time T1 is the machining time of the work residual material W2
  • time T1 to time T2 is the machining time of the joint portion between the work residual material W2 and the work W1, and after time T2.
  • time T1 is the machining time of the work residual material W2
  • time T1 to time T2 is the machining time of the joint portion between the work residual material W2 and the work W1, and after time T2.
  • the machining time of the work residual material W2 (up to the time T1 in FIG. 4A) is larger than the machining time of the work W1 (after the time T2). More specifically, as shown in FIG. 5 showing the processing of the work residual material W2, the misalignment amount s of the work residual material W2 with respect to the integrally joined work W1 and the depth of cut into the work W1 for deburring are used. .. In the range where the side surface of the work residual material W2 protrudes from the side surface of the work W1 (upper side of the work residual material W2 in FIG.
  • the cut is made larger by the amount of misalignment s than the cut amount ap. become.
  • the amount of misalignment s is reduced from the depth of cut ap. It will be a shallow cut.
  • the cutting resistance is a small value (minimum) in the range where the side surface of the work residual material W2 is recessed from the side surface of the work W1.
  • the value) becomes a large value (maximum value) in the range where the side surface of the work residual material W2 protrudes from the side surface of the work W1, and these minimum and maximum values are repeated by the rotation of the work residual material W2.
  • the difference between the minimum value and the maximum value of the cutting resistance becomes very large.
  • the work W1 is evenly cut with a depth of cut up over the entire circumference.
  • the difference between the minimum value and the maximum value of the cutting resistance is smaller than that in FIG. 4B.
  • the misalignment amount of the work residual material W2 is s [mm] and the depth of cut is up [mm]
  • the specific cutting resistance of the work W1 and the work residual material W2 is Ks [N / mm 2 ]
  • the feed amount of the tool 30 is f [mm. / Rev], for example, on the work residual material W2 side (FIG.
  • the cutting resistance on the work W1 side becomes a constant value at Ks ⁇ f ⁇ ap, for example. It can be shown as an average value Fave (because it is a constant value, it may be, for example, a maximum value F'max). The average value Fave of the cutting resistance is smaller than the maximum value Fmax of the cutting resistance on the work residual material W2 side.
  • the depth of cut ap of the tool 30 is a known value set by the input unit 40b or the like, the magnitude of the maximum value Fmax of the cutting resistance on the work residual material W2 side and the average value Fave of the cutting resistance on the work W1 side. From the difference from the size, the misalignment amount s of the work residual material W2 with respect to the work W1 can be easily known. Further, the maximum value Fmax of the cutting resistance on the work residual material W2 side is generated at substantially the same position during one rotation of the work residual material W2. Therefore, by comparing with the rotation phase of the first spindle 10, the misalignment direction of the work residual material W2 with respect to the work W1 can also be known.
  • the load of the tool 30 can be detected by installing, for example, a power meter on the tool base 31.
  • the cutting resistance can be easily and accurately obtained.
  • the cutting resistance may be obtained from the current value of the spindle motor 13 that drives the first spindle 10 that holds the work W1. Since the load applied to the spindle motor 13 can be known by using the current value of the spindle motor 13, the cutting resistance can be obtained with the existing equipment, and the dedicated equipment for detecting the cutting resistance becomes unnecessary.
  • the calculation unit 40c calculates the misalignment amount s of the work residual material W2 with respect to the work W1 when deburring the joint portion, so that the degree of misalignment can be known during deburring. Therefore, it is possible to promptly select an appropriate work after performing this deburring, and it is possible to reduce the manufacturing cost of the product and stabilize the quality of the product.
  • the comparison unit 40d compares the calculated misalignment amount s with the first threshold value ⁇ (step S15 in FIG. 2).
  • the determination unit 40e determines that the calculated misalignment amount s exceeds the first threshold value ⁇ (YES in step S15)
  • the misalignment amount s is larger than expected.
  • Contents Call the program "Redo friction joining between work and work residue" from the memory.
  • the control unit 40a brings the second spindle 20 closer to the first spindle 10, for example.
  • the work residual material W2 is held by the second main shaft 20, the work W1 is held by the first main shaft 10, and the joint portion between the work W1 and the work residual material W2 is cut off (step S20).
  • step S11 the process returns to step S11, and the rear end portion of the work residual material W2 is pressed against the tip end portion of the work W1 to be frictionally joined.
  • the misalignment amount s exceeds the first threshold value ⁇
  • the driving of the first main shaft 10 or the like is stopped, the operator is notified by lighting the lamp or sounding the buzzer, and the series of routines is completed. May be good.
  • step S15 when the determination unit 40e determines that the calculated misalignment amount s is equal to or less than the first threshold value ⁇ (NO in step S15), the process proceeds to step S16, and the comparison unit 40d calculates the misalignment. The quantity s and the second threshold ⁇ are compared.
  • the determination unit 40e determines that the calculated misalignment amount s exceeds the second threshold value ⁇ (YES in step S16)
  • the misalignment amount s is slightly larger than expected. Therefore, the control unit 40a calls a program of another work content "re-deburring" from the memory. As a result, the control unit 40a sets the depth of cut of the tool 30 to a larger value than the previous time (step S21), returns to step S13, and deburrs again with the tool 30.
  • step S16 when the determination unit 40e determines in step S16 that the calculated misalignment amount s is equal to or less than the second threshold value ⁇ (NO in step S16), the misalignment amount s is small as expected. Therefore, the control unit 40a calls a program of yet another work content "start cutting of a predetermined shape" from the memory. As a result, first, the control unit 40a opens the first chuck 11 (step S17).
  • control unit 40a retracts the push arrow, and as shown by the arrow pointing to the right in FIG. 3E, the integrally joined work W1 and the work residual material W2 are once pulled toward the guide bush 18.
  • the push arrow is advanced, and as shown by the arrow pointing to the left in FIG. 3E, the work residual material W2 is projected from the guide bush 18 by a predetermined length to position the work residual material W2 (FIG. 2). Step S18).
  • the control unit 40a After positioning the work residual material W2, the control unit 40a performs a cutting process of a predetermined shape on the portion of the work residual material W2, for example, with the tool 30 (step S19, FIG. 3F). In this way, the front end portion of the work W1 and the rear end portion of the work residual material W2 are frictionally joined using the first spindle 10 and the second spindle 20 arranged to face each other, and cutting and joining are fused (cutting process). And the joining process are integrated), and the manufacturing cost of the product can be reduced by the automatic lathe 1.
  • the guide bush 18 is provided between the first spindle 10 and the second spindle 20 .
  • the second spindle 20 and the guide bush 18 can be omitted.
  • the present invention can also be applied to a structure in which only a second chuck 21 that can be opened and closed is arranged in front of the first spindle 10.
  • the work W1 may be made of a material different from the work residual material W2. This is because the specific cutting resistance Ks is a fixed value determined according to the feed amount f, although it differs depending on the material.
  • the present invention also describes the case where the work residual material W2 and the work W1 are joined by welding with a laser or heat. Applicable. Further, the present invention is not limited to the example of joining the work residual material W2, and can be applied to the case where new materials or parts (for example, parts processed into a solid or hollow shape) are joined to each other. When joining parts to each other, it is checked whether the parts are within the tolerance (for example, coaxiality) of the products to which the parts are joined, based on the amount of misalignment between the parts calculated by the machine tool of the above embodiment. It is also possible to judge.
  • the tolerance for example, coaxiality
  • the tool 30 is machined in the order of the work residual material W2, the joint portion between the work residual material W2 and the work W1, and the work W1, that is, the tool 30 is used to cut the work residual material W2 toward the work W1.
  • the tool 30 is machined in the order of the work W1, the joint portion between the work W1 and the work residual material W2, and the work residual material W2, that is, from the work W1 to the work residual material W2 by the tool 30. It can also be applied when cutting.
  • the calculation of the misalignment amount and the specific processing according to the degree of the misalignment are performed from the work residual material W2 to the work W1 by the tool 30. Since it overlaps with the case of cutting toward the above, the description thereof will be omitted.

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  • Mechanical Engineering (AREA)
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Abstract

La présente invention concerne une machine-outil et son procédé de commande pour sélectionner rapidement une opération après l'élimination de bavures. L'invention concerne une machine-outil (illustrée en tant que tour automatique 1) pourvue : d'un premier arbre principal (10) pour maintenir en rotation une première pièce (illustrée en tant que pièce W1) ; une table à outils (31) sur laquelle est monté un outil (30) qui découpe la première pièce ; une unité de commande (40a) pour découper, à l'aide de l'outil, une bavure B générée sur une partie jointe de la première pièce et une seconde pièce (illustrée en tant que matériau résiduel de la pièce W2) qui présente le même diamètre que la première pièce et qui est jointe d'un seul tenant avec la première pièce. Sur la base d'une résistance à la découpe générée à un moment où la découpe est effectuée de façon continue à partir de la première pièce ou de la seconde pièce vers l'autre par l'outil (30), l'unité de commande calcule une quantité de déviation de cœur s de la seconde pièce par rapport à la première pièce jointe d'un seul tenant.
PCT/JP2021/011049 2020-03-27 2021-03-18 Machine-outil et son procédé de commande WO2021193344A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07195183A (ja) * 1994-01-05 1995-08-01 Hitachi Ltd 摩擦圧接品の良否判定方法および装置
JPH07195256A (ja) * 1993-11-26 1995-08-01 Omron Corp 制御装置及びそれが用いられる工作機械並びにトルク測定器及び工具折損検出装置
JP2012125901A (ja) * 2010-12-17 2012-07-05 Ojima Shisaku Kenkyusho:Kk 工具セッター及び工具の刃先位置合わせ方法
JP2018027585A (ja) * 2016-08-17 2018-02-22 オークマ株式会社 工作機械
WO2019102808A1 (fr) * 2017-11-27 2019-05-31 シチズン時計株式会社 Procédé de soudage par friction et machine-outil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07195256A (ja) * 1993-11-26 1995-08-01 Omron Corp 制御装置及びそれが用いられる工作機械並びにトルク測定器及び工具折損検出装置
JPH07195183A (ja) * 1994-01-05 1995-08-01 Hitachi Ltd 摩擦圧接品の良否判定方法および装置
JP2012125901A (ja) * 2010-12-17 2012-07-05 Ojima Shisaku Kenkyusho:Kk 工具セッター及び工具の刃先位置合わせ方法
JP2018027585A (ja) * 2016-08-17 2018-02-22 オークマ株式会社 工作機械
WO2019102808A1 (fr) * 2017-11-27 2019-05-31 シチズン時計株式会社 Procédé de soudage par friction et machine-outil

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