Title:
LASER BEAM MACHINE AND LASER PROCESSING METHOD
Document Type and Number:
Japanese Patent JP2020199507
Kind Code:
A
Abstract:
To provide a laser beam machine capable of focusing a laser beam on sheet metal of a workpiece by changing a beam profile of the laser beam in accordance with processing conditions.SOLUTION: A laser beam machine includes: a coupler 20 which is an optical device capable of changing a beam profile of a laser beam emitted from a fiber laser oscillator; a convergence lens 32 in which a first lens region with a first focal distance is provided on an inner peripheral side, and a second lens region with a second focal distance different from the first focal distance is provided on an outer peripheral side, in order to focus the laser beam emitted from the coupler 20; and a moving mechanism 43 for moving the convergence lens 32 in an optical axis direction.SELECTED DRAWING: Figure 1
Inventors:
ORIBE YOSHIYUKI
SAITO JUNICHI
SAITO JUNICHI
Application Number:
JP2019106118A
Publication Date:
December 17, 2020
Filing Date:
June 06, 2019
Export Citation:
Assignee:
AMADA CO LTD
International Classes:
B23K26/064; B23K26/062
Domestic Patent References:
| JPH02263590A | 1990-10-26 | |||
| JPH11138896A | 1999-05-25 | |||
| JP2003340582A | 2003-12-02 | |||
| JP2019018233A | 2019-02-07 |
Foreign References:
| WO1992011971A1 | 1992-07-23 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu