Unlock instant, AI-driven research and patent intelligence for your innovation.

Coupling method and device for water-jet-guided laser light path

A technology of laser spot and water guide, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as disturbance and damage

Active Publication Date: 2015-05-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the nozzle surface is used as the focusing surface, if the optical path is disturbed momentarily during the processing operation, the high-energy focused spot can be shot on the edge of the nozzle and cause permanent damage.
This point is pointed out in the patents "Hybrid Laser Processing Device" and "A Water Jet and Fiber Laser Direct Coupling Device". evaded

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coupling method and device for water-jet-guided laser light path
  • Coupling method and device for water-jet-guided laser light path
  • Coupling method and device for water-jet-guided laser light path

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] 1.1 Device: such as figure 1 As shown, the position of the nozzle 16 is fixed, the water column 14 is ejected upward, and the coupled light is irradiated on the light screen 10 through the transparent medium 12. Due to the relationship of the total reflection emission angle, the image in the light screen outside a certain distance is a magnified spot, so there is no Additional microscope light path is required. The adjustable mirror 18 is used to adjust the relative angles between the nozzle and the incident light path in two orthogonal directions. The relative position in the cross direction, the imaging element (light screen) is white paper, and the transmission element is glass slide.

[0112] 1.2 Specific adjustment method:

[0113] 1.2.1 Alignment and preparation: Place a glass slide at about 30mm from the water outlet of the system nozzle, place a light screen (white paper) 180mm behind the glass slide, and then discharge water. Adjust the laser output power to...

Embodiment 2

[0118] 2.1 Device: such as figure 2 As shown, the position of the incident light is fixed, the water jet exits horizontally, the nozzle is fixed on the turntable 22, which is used to adjust the relative angle between the nozzle and the light path in one direction, and the turntable is fixed on the horizontal horizontal adjustment member 24, which is used to adjust the other orthogonal The relative angle between the nozzle and the light path in one direction, the horizontal horizontal adjustment member (swing angle stage) is fixed on the angle adjustment element (one-dimensional translation stage) 26, which is used to adjust the relative position of the nozzle and the light path in one direction, and the translation stage is fixed on the vertical The adjustment member (elevating platform) 28 is used to adjust the relative position of the nozzle and the light path in another orthogonal direction. The imaging element (light screen) is white paper and the transmission element is ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method and a device for water-jet-guided laser light path coupling. Particularly, the method includes the steps: (i) providing a water-jet-guided laser with water column coinciding with laser path; (ii) projecting the water-jet-guided laser in the step (i) through a transmitting element to an imaging element far apart from the transmitting element so as to form a laser light spot; (iii) adjusting angle between the water column and the laser so as to enable the laser light spot to be an independent annular light spot and implement coupling; and optionally (iv) performing optical power reading on the independent annular spot, and then adjusting an incident laser element or an emergent element so as to keep the laser light spot as the independent annular light spot and optical power reading as a maximum value to implement coupling. A nozzle of the device is simple in design; light path coupling can be implemented by visual observation; and operation is facilitated and stable.

Description

technical field [0001] The invention relates to a method and device for simply realizing the coupling adjustment of a laser beam and a water jet without resorting to an auxiliary observation optical path and an image sensor. Background technique [0002] Water-guided laser processing technology utilizes the principle of total reflection of light in the two-phase medium of water and air, and couples the laser beam into the water jet to process the material. Due to the transient nature of pulsed laser processing and the cooling and flushing effect of water jets on the surface of materials, water conduction laser processing technology has unique advantages in the field of micromachining of brittle and heat-sensitive materials, and has attracted the attention of researchers at home and abroad. [0003] A key issue in water-guided laser processing technology is to couple light into the water jet. The adjustable range is not very large, and a slight deviation will cause the energy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/14B23K26/06B23K26/70
Inventor 李萌张文武张希平张天润
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI