Method for processing special-shaped hole through laser light

A technology of laser processing and special-shaped holes, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as microcracks, low processing efficiency, and recrystallization, so as to improve service life and trouble-free running time, and improve The effect of thrust-to-weight ratio

Active Publication Date: 2013-04-03
CHINA KEHAN LASER FUJIAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the process bottlenecks of low precision, low processing efficiency, recasting layer, microcracks, recrystallization and other process bottlenecks in the processing of special-shaped air film holes...

Method used

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  • Method for processing special-shaped hole through laser light
  • Method for processing special-shaped hole through laser light
  • Method for processing special-shaped hole through laser light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Two-dimensional oscillating optical micro-motion platform variable amplitude composite machining method

[0031] figure 2 As shown, the route trajectory of the laser scanning is the compound motion track of the A axis of the two-dimensional oscillating optical micro-motion platform 1 and the X-axis of the five-axis platform. It is the origin of the workpiece coordinate system.

[0032] The A-axis of the two-dimensional oscillating optical micro-motion platform 1 performs linear sweeping motion, and the X-axis of the five-axis platform pushes the workpiece forward. In order to process irregular chamfers on the surface of the workpiece, the scanning distance of the two-dimensional oscillating optical micro-motion platform 1 along the A axis, that is, its amplitude, changes with time. E.g, figure 2 Shown are: A1A11, A2A21, ..., AnAn1, as the X-axis of the five-axis platform advances the workpiece, a layer of trapezoidal bevel is formed on the surface of the workpiece....

Embodiment 2

[0036] Beam Shutter Variable Amplitude Composite Machining Method

[0037] Such as Figure 5 As shown, the line segments AnA1 and An1A11 are two contour lines of the special-shaped surface, and the line segments AnAn1 and A1A11 form the special-shaped surface. The two oblique lines are determined by the control timing of the beam shutter, that is, when the X-axis corresponds to the position of point X1, the beam shutter is opened at point A1 and closed at point A11, and corresponding to the position of point X2, the beam shutter is at point A2 Open at point A21, close at point A21, and so on. During this process, the micro-motion two-dimensional platform-A axis swings at a constant speed and equal amplitude.

[0038] Such as Image 6 Shown is a control flow chart of a single-layer special-shaped surface passing through a beam shutter timing control method; Figure 7 It is the overall control flow chart of laser processing of special-shaped holes. The focus feed and X-axis...

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PUM

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Abstract

The invention provides a method for processing a special-shaped hole on a metal by using femtosecond laser light. Processing of a circular hole and a special-shaped hole is performed on the same workstation; and the method is matched with a high-precision control system, so that the position accuracy of the circular hole in the special-shaped hole is ensured. Motion compounding is performed on a swinging shaft of an inching two-dimensional platform and a linear shaft of a five-axle platform, real-time control is performed on a laser shutter, and the basic rules that points construct lines, lines construct planes and planes construct a body are adopted, so that various special shapes can be processed by accurately controlling a laser beam tool.

Description

technical field [0001] The invention belongs to the field of laser processing, and in particular relates to a method for laser processing special-shaped holes. Background technique [0002] At present, the air film hole processing of blades is mainly processed by mechanical processing, electric spark method, traditional nanosecond laser and electro-hydraulic beam. The electro-hydraulic beam processing has the lowest efficiency, and the contour shape of the hole is the most uncontrollable It is very poor and cannot process special-shaped holes, and has not become the mainstream processing method of aviation precision machining. [0003] 1. Mechanical processing: with strong impact and thermal effects, it is very difficult to process micro-holes or micro-grooves smaller than 200 microns, and the product qualification rate is also very low. [0004] 2. EDM: This processing method has disadvantages that are difficult to overcome: the processing dimensional accuracy is uncontrol...

Claims

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Application Information

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IPC IPC(8): B23K26/38B23K26/384
Inventor 杨勇贾海妮姜宝宁杨小君
Owner CHINA KEHAN LASER FUJIAN
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