中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.029 seconds)

    Laser welding method for the surface-treated steel plate
    11.
    发明专利
    Laser welding method for the surface-treated steel plate 有权

    公开(公告)号：JP4099642B2

    公开(公告)日：2008-06-11

    申请号：JP2002101451

    申请日：2002-04-03

    Applicant: トヨタ自動車株式会社

    Inventor： 博成 三方 ,  彰生 佐藤 ,  善統 石川

    IPC: B23K26/00 ,  B23K26/20 ,  B23K26/32 ,  B23K103/04 ,  B23K103/16

    Abstract: PROBLEM TO BE SOLVED: To provide a laser welding method for surface treated steel sheets, a method that enables dry fine solid particles to be used directly as spacers and that thereby eliminates special post treatment such as a drying process to help improving productivity as well as reducing manufacturing cost. SOLUTION: On one 1 of the two plated steel sheets to be welded, there are deposited fine solid particles 3 such as steel beads for shot peening by means of a cladding laser torch having a fine particle passage. Then, on this surface treated steel sheet 1, the other one 2 is superposed through the fine solid particles 3, and subsequently the superposed parts are laser-welded. Between the two plated steel sheets 1, 2, a minute gap is maintained by the fine solid particles 3; therefore, in the laser welding, gasses generated by the evaporation of the metallic components in the plated layers 1a, 2a are discharged outside through the gap, enabling a quality weld metal 5 free from blowholes to be obtained. COPYRIGHT: (C)2004,JPO

    Laser processing equipment and laser processing method
    15.
    发明专利
    Laser processing equipment and laser processing method 有权

    公开(公告)号：JP4386137B2

    公开(公告)日：2009-12-16

    申请号：JP2008051359

    申请日：2008-02-29

    Applicant: トヨタ自動車株式会社

    Inventor： 裕彦 久野 ,  彰生 佐藤 ,  知弥 奥野 ,  友紀 小宮

    IPC: B23K26/04 ,  B23K26/06 ,  B23K26/08 ,  G02B26/10

    CPC classification number: G02B26/101 ,  B23K26/064 ,  B23K26/082 ,  B23K26/389

    Abstract: A laser processing apparatus 11 comprises a first shift mechanism 31 including a first transparent member 41 having a first incident face 43 and a first output face 44 that are parallel to each other; and a first motor 42 that rotates the first transparent member 41 around a first rotational axis; wherein the first shift mechanism 31 shifts the laser beam L exiting from the first output face 44 in a state parallel with the incident light on the first incident face 43 in a first direction. The laser processing apparatus 11 also comprises a second shift mechanism 32 including a second transparent member 46 including a second incident face 48 and a second output face 49 that are parallel to each other; and a second motor 47 that rotates the second transparent member 46 around the second rotational axis; wherein the second rotating mechanism 32 rotates the laser beam L exiting from the second output face 49 in a state parallel with the laser beam L incident on the second incident face 48 in a second direction perpendicular to the first direction. A light collecting lens 22 collects the laser beam L shifted with the second shift section 32 to process a work W1. This configuration allows control of a taper angle of a hole formed by laser processing.

    Quenching method and the quenching system by the energy beam
    20.
    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

Patent Agency Ranking