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    Injector nozzle hole processing method
    7.
    发明专利
    Injector nozzle hole processing method 有权

    公开(公告)号：JP4207788B2

    公开(公告)日：2009-01-14

    申请号：JP2004023412

    申请日：2004-01-30

    Applicant: トヨタ自動車株式会社

    Inventor： 耕平 谷中

    IPC: B23K26/38 ,  F02M51/06 ,  B23K26/00 ,  B23K26/12 ,  B23K26/14 ,  F02M61/16 ,  F02M61/18

    Abstract: PROBLEM TO BE SOLVED: To provide a laser beam drilling technology for preventing adhesion and enhancing uniformity, which secures a smooth fusion face obtained by the ejection and removal of melt and prevents the expansion of a fusion diameter on the surface side. SOLUTION: An injector 1 is fixed to a jig 6 for fixing the injector. A passage installed within the jig 6 for fixing the injector is connected to the inside of the injector and a negative pressure gauge 5. The negative pressure gauge 5 is connected to a vacuum pump 3. The negative pressure is primarily controlled by a main regulator 32. The negative pressure is controlled further precisely by making a pump controller 4 control the vacuum pump 3 and a subregulator 33 with an output from the negative pressure gauge 5. When the injector is subjected to laser beam drilling by using such devices, the inside of a nozzle passage is sucked at a negative pressure close to 300 mmHg (38.7 kPa). COPYRIGHT: (C)2005,JPO&NCIPI

    Laser processing equipment and laser processing method
    8.
    发明专利
    Laser processing equipment and laser processing method 有权

    公开(公告)号：JP4779459B2

    公开(公告)日：2011-09-28

    申请号：JP2005181844

    申请日：2005-06-22

    Applicant: トヨタ自動車株式会社

    Inventor： 耕平 谷中

    IPC: B23K26/38 ,  B23K26/14

    Abstract: PROBLEM TO BE SOLVED: To machine a desired hole within a furthermore short machining time in laser beam machining by suppressing the generation of a molten pool during machining the hole. SOLUTION: An apparatus 10 for laser beam machining comprises a radiating portion 11 for radiating a laser beam 14 toward a workpiece, a jetting portion 13 for jetting an assist gas toward the region 36 to be irradiated by the laser beam 14, and an assist gas kind control portion 15 for changing the kind of the assist gas. The assist gas kind control portion 15 changes the kind of the assist gas to such an assist gas that easily produces a molten substance than before after a preliminary hole penetrates through the workpiece (a hole piercing portion 22 by a nozzle 12). By changing the kind of the assist gas to be supplied after forming the through hole on the workpiece, the produced amount of the molten substance is optimized according to the machining process, and the molten pool is not produced inside the hole, and the desired hole can be machined at a furthermore short machining time. COPYRIGHT: (C)2007,JPO&INPIT

    Drilling methods and drilling equipment
    9.
    发明专利
    Drilling methods and drilling equipment 有权

    公开(公告)号：JP4635839B2

    公开(公告)日：2011-02-23

    申请号：JP2005330503

    申请日：2005-11-15

    Applicant: トヨタ自動車株式会社

    Inventor： 耕平 谷中

    IPC: B23K26/38 ,  B23K26/08 ,  B23K26/14

    Abstract: PROBLEM TO BE SOLVED: To provide a drilling method and a drilling apparatus capable of easily performing the drilling with high accuracy in a short time. SOLUTION: The drilling method comprises a first step of forming a through hole by irradiating one side W1 of a work W with laser beams L, and a second step of forming a through hole of the predetermined diameter by increasing the trepanning diameter while spirally turning the laser beams L, wherein at least in the second step, assist gas irradiates the work coaxially with the irradiation direction of the laser beams L. The drilling apparatus used for the drilling method comprises a laser beam oscillator 1, a condensing optical system 3 composed of a collimate lens 31, a plurality of galvanometer mirrors and a condensing lens 33, and a means capable of selectively adjusting the pressure and the kind of assist gas. COPYRIGHT: (C)2007,JPO&INPIT

    Quenching method and the quenching system by the energy beam
    10.
    发明专利
    Quenching method and the quenching system by the energy beam 有权

    公开(公告)号：JP5012732B2

    公开(公告)日：2012-08-29

    申请号：JP2008210958

    申请日：2008-08-19

    Applicant: トヨタ自動車株式会社

    Inventor： 彰生 佐藤 ,  耕平 谷中

    IPC: C21D1/09 ,  B23K26/00 ,  B23K26/42 ,  B23K103/04

    Abstract: PROBLEM TO BE SOLVED: To provide a quenching method with the use of an energy beam, which can stabilize a quenching temperature of an object to be quenched by being irradiated with an energy beam such as a laser beam and can uniformly obtain an adequate quench-hardened layer having a stable quenched depth and hardness, even when there exists a dispersion of a shape, a surface quality and the like in objects to be quenched or even when the object to be quenched is quenched for the first time. SOLUTION: The quenching method includes: measuring a temperature of an irradiated portion while preliminarily irradiating a workpiece with a laser beam by scanning the beam in the same form as in a quenching operation and also scanning the beam of such a certain energy level that the temperature of the irradiated portion with the laser beam does not reach a predetermined transformation temperature, and thereby determining a correlation (graph G1) between the position of the workpiece and the preliminary irradiation temperature; calculating an anticipated temperature (graph G2) which varies depending on the position of the workpiece, by reflecting the correlation on the basis of the preliminary irradiation temperature, and previously determining such a quenching beam condition (graph G3) that the temperature of the irradiated portion can be a target quenching temperature T 0 ; and controlling a laser condition on the basis of the quenching beam condition. COPYRIGHT: (C)2010,JPO&INPIT

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