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A laser focusing device

A focusing device and laser technology, applied in laser welding equipment, optics, optical components, etc., can solve unconsidered problems and achieve the effect of adjustable spot size

Active Publication Date: 2015-10-07
苏州柯莱得激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method realizes the complete coaxiality of the focused beam and the feeding material, but does not consider the need for different diameters of the spot when processing parts with uneven wall thickness

Method used

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  • A laser focusing device
  • A laser focusing device
  • A laser focusing device

Examples

Experimental program
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Embodiment 1

[0033] See attached image 3 to attach Figure 5 As shown, a laser focusing device, the first-stage parabolic reflective focusing mirror 2 and the second-stage conical straight-face reflective mirror 3 are arranged coaxially with the laser beam 1, and the first-stage parabolic reflective focusing mirror 2 and the The top of the plane of the second-stage conical straight-face reflector 3 is placed in the same direction, and the second-stage conical straight-face reflector 3 is perpendicular to the workbench as Figure 5 shown. The laser beam 1 passes through the hollow part of the second-stage straight-face reflector 3 and irradiates to the first-stage parabolic reflective focusing mirror 2, is reflected and focused, and then reflected by the second-stage conical straight-face reflector 3 to form a focused annular beam. By adjusting the position of the first-stage parabolic reflective focusing mirror 2 in the vertical direction, the size of the annular light spot can be adjus...

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PUM

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Abstract

The invention discloses a laser focusing device. The laser focusing device is characterized by comprising a first-level paraboloid reflection focus lamp and a second-level cone straight-surface reflector, wherein the first-level paraboloid reflection focus lamp and the second-level cone straight-surface reflector are parallelly and oppositely arranged and are coaxially arranged with a laser beam, the bottom surfaces of the first-level paraboloid reflection focus lamp and the second-level cone straight-surface reflector are parallel, and the second-level cone straight-surface reflector is hollow inside so as to form an entrance port of the laser beam. The laser focusing device solves the problems existing in laser focusing in the prior art. When parts with all kinds of materials are processed, sizes of spots are adjustable, and duty ratios are changeless, and therefore energy density distribution forms are changeless, and requirements for different processing methods and different materials can be satisfied.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a laser focusing device, in particular to a laser focusing device with variable focus spot size and constant duty cycle. Background technique [0002] The use of focused high-energy laser beams for special processing of high-performance metal parts, preparation of high-performance materials and direct forming of high-performance parts is an important part of advanced manufacturing technology. [0003] In laser processing, the focused spot moves in two or three dimensions according to a predetermined trajectory. For example, in laser cladding accumulation, while the focused spot is moving, cladding materials are continuously added to the moving laser focused spot in real time to achieve cladding , and form a series of melting channels on the movement track of the spot, and the quality of the connection between the melting channels themselves, the metallurgical bonding quality betwe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09B23K26/046B23K26/064
Inventor 石世宏郁佳莉傅戈雁朱刚贤张甲
Owner 苏州柯莱得激光科技有限公司