Device and technology for laser auxiliary cutting and grinding machining of transparent hard and bristle material

A laser-assisted, hard and brittle material technology, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems that the laser is easily blocked by the tool, the energy loss of the laser beam of the coolant, etc., and achieves convenient heating and enhanced precise control , to ensure the effect of precise control

Active Publication Date: 2019-03-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies in the laser-assisted grinding process of the prior art, the laser is easily blocked by the tool, the influence of the coolant on the beam quality, and the energy loss caused by the laser beam along the incident angle, etc., the purpose of the present invention is to provide a laser-assisted grinding machine. The device and process for cutting and grinding transparent hard and brittle materials can improve the surface quality of transparent hard and brittle materials and improve the efficiency of the entire processing process, which is of great significance in the precise and efficient processing of transparent materials

Method used

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  • Device and technology for laser auxiliary cutting and grinding machining of transparent hard and bristle material
  • Device and technology for laser auxiliary cutting and grinding machining of transparent hard and bristle material
  • Device and technology for laser auxiliary cutting and grinding machining of transparent hard and bristle material

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Embodiment 1

[0029] refer to figure 1 As shown, a laser-assisted cutting and grinding processing device for transparent materials includes a motion system, three linear axes x, y, and z control the feed movement, and a rotating shaft 8 controls the feeding or rotation of the cutting and grinding tool; the laser system includes Lasers, optical fibers, laser head devices; temperature measurement systems, including computers, infrared thermal imagers or infrared thermometers.

[0030] The laser head 23 and the rotating shaft 8 are fixed on the z-direction linear shaft 7 through the fixing plate 6;

[0031] The position between the laser head and the transparent workpiece 9 is adjusted by the fine-tuning device, so that the laser is injected from the transparent workpiece to the other side of the workpiece, and the other side of the transparent material must be within the defocus range of the laser beam to ensure that the heating temperature is obtained. its softening;

[0032] The transpare...

Embodiment 2

[0038] The cutting tool installed in embodiment 1 is replaced with superabrasive grinding wheel 10 in this embodiment, with reference to image 3 , because the transparent workpiece 9 is light-transmitting, the laser beam 12 can pass through the transparent workpiece 9 to heat the other side, the laser beam always heats the workpiece 9 at the front end of the area to be processed, and the laser heat-affected zone is consistent with the grinding arc zone of the grinding wheel. Under the action of the heat-affected zone 17, the workpiece material is softened to the maximum, and under the action of the grinding wheel abrasive grains 19, the softening depth is a p The softened layer is removed, forming wear debris 20.

[0039]On the one hand, this method can realize the ductile removal of hard and brittle materials and improve the surface quality of transparent materials. On the other hand, it can enhance the precise control of laser energy and defocus, and reasonably control the ...

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Abstract

The invention discloses a device and technology for laser auxiliary cutting and grinding machining of a transparent hard and bristle material. A laser head and a cutting and grinding tool are locatedon the two sides of a transparent workpiece correspondingly, and the cutting and grinding tool is fixed to a rotating shaft. The laser head and the rotating shaft are fixed to the z-direction linear axis through a fixing plate. The transparent workpiece is fixed to the linear shaft x through a clamp and moves in the x direction of the linear axis x. The transparent workpiece, the laser head and the cutting and grinding tool are controlled through the z-direction linear axis along the displacement in the z direction. Lasers are emitted to the other side of the workpiece from the transparent workpiece, and it is ensured that the other side of the transparent material obtains the heating temperature in the laser beam defocusing amount range so that the material can be softened. The device andtechnology for laser auxiliary cutting and grinding machining of the transparent hard and bristle material has the beneficial effects that tool abrasion is reduced, and the surface quality of the workpiece is improved.

Description

technical field [0001] The invention relates to a novel laser-assisted cutting and grinding processing device, in particular to a laser-assisted cutting and grinding processing device for transparent materials. Background technique [0002] Transparent materials such as optical glass have been widely used in optical components and other fields due to their excellent mechanical and optical properties such as high hardness, high strength, high temperature resistance, oxidation resistance and optical transmittance. The processing problems are mainly reflected in poor processing quality, low efficiency, and high processing costs. Because such materials are both hard and brittle, the chipping damage and thermal cracks produced in traditional processing seriously affect the mechanical properties of parts, so it is difficult to obtain satisfactory processing results by traditional mechanical processing methods. Grinding with superabrasive grinding wheels, the surface deformation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/00B23K26/36B23K26/70
CPCB23K26/0093B23K26/36B23K26/702
Inventor 张全利张振徐九华傅玉灿苏宏华丁文锋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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