A method and system for machining threads on the surface of hard and brittle materials

A technology of hard and brittle materials and surface processing, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of low processing precision and low processing efficiency, and achieve high processing precision, high processing efficiency and fast scanning speed. Effect

Active Publication Date: 2021-06-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to overcome the problems of low processing precision and low processing efficiency when using the traditional single-point scanning processing method to process threads on the surface of hard and brittle materials, the present invention provides a method and system for processing threads on the surface of hard and brittle materials

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  • A method and system for machining threads on the surface of hard and brittle materials
  • A method and system for machining threads on the surface of hard and brittle materials
  • A method and system for machining threads on the surface of hard and brittle materials

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0062] The invention uses a two-dimensional vibrating mirror laser scanning system combined with a four-axis motion platform to realize thread processing on the surface of hard and brittle materials. systems such as figure 1 As shown, it includes a laser processing system and a four-axis motion platform 12 . The laser processing system includes a femtosecond laser 1, a beam expander 2, a first reflector 3, a second reflector 4, a spatial light modulator 5, a dichroic mirror 6, A dichroic mirror 7 , a two-dimensional scanning galvanometer 8 and a field mirror 9 . The laser processing system also includes a distance measuring sensor 10 and a coaxial vision system 11 . Wherein the coaxial vision system 11 may be a coaxial camera. The ranging sensor 10 is used to detect the focus position and level the workpiece to be processed, and the coaxial...

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Abstract

The invention relates to a method for processing hard and brittle materials, in particular to a method and system for processing threads on the surface of hard and brittle materials. To overcome the problems of low processing accuracy and low processing efficiency in traditional single-point scanning processing, the methods include: installing the workpiece, leveling the hard and brittle material workpiece to be processed, determining the laser focus position, determining the processing program and processing. The system includes a four-axis motion platform and a laser processing system; the laser processing system includes a femtosecond laser, a beam expander, a first reflector, a second reflector, a spatial light modulator, and a second Chromatic mirrors, dichroic mirrors, 2D scanning galvanometers and field mirrors. The present invention realizes the line scanning processing based on the scanning galvanometer, every time the C-axis rotates at a certain angle, the processing of one layer of all single grooves at this angle can be realized, and the processing of one layer of thread can be realized when the C-axis rotates 360 degrees; The processing efficiency and processing accuracy of the point scanning method of the present invention are greatly improved.

Description

technical field [0001] The invention relates to a method for processing hard and brittle materials, in particular to a method and system for processing threads on the surface of hard and brittle materials. Background technique [0002] Hard and brittle materials are currently processed by chemical corrosion, ion beam etching or ultrafast laser processing due to their difficulty in processing and fragility. However, chemical etching has the problems of low processing accuracy, complicated process and pollution of chemical cleaning solution; ion beam etching is processed through a mask, and the processing accuracy depends entirely on the mask accuracy. Ultrafast laser processing is a kind of non-contact processing, which has no selectivity for materials, and basically all solid materials can be processed. Due to its unique physical effect and the special mechanism of material action, the thermal effect and thermal diffusion of ultrafast laser manufacturing are small, and ther...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/082B23K26/064B23K26/70
CPCB23K26/0643B23K26/082B23K26/702
Inventor 李明安永刚田新锋
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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