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Femtosecond laser machining system for nano-twin diamond tool, and machining method based on system

A technology of femtosecond laser processing and diamond tools, which is applied in metal processing equipment, laser welding equipment, manufacturing tools, etc., can solve the problem of inability to prepare nano-twinned diamond tools, achieve the goal of improving strong ablation damage and improving processing accuracy Effect

Inactive Publication Date: 2019-07-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention is to solve the problem that traditional mechanical processing methods cannot prepare nano-twinned diamond tools, and now provides a femtosecond laser processing system for nano-twinned diamond tools and a processing method based on the system

Method used

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  • Femtosecond laser machining system for nano-twin diamond tool, and machining method based on system
  • Femtosecond laser machining system for nano-twin diamond tool, and machining method based on system
  • Femtosecond laser machining system for nano-twin diamond tool, and machining method based on system

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specific Embodiment approach 1

[0026] Specific implementation mode one: refer to figure 1 This embodiment is specifically described. The femtosecond laser processing system for nano-twinned diamond tools described in this embodiment includes: a light source 2, a vibrating mirror system, a focusing lens 5, and a displacement table 1. The vibrating mirror system includes a first vibration reflection Mirror 3, the first vibrating motor, the second vibrating mirror 4 and the second driving motor;

[0027] The outgoing light of the light source 2 is incident on the first vibrating mirror 3 through the reflection system, the reflected light of the first vibrating mirror 3 is incident on the second vibrating mirror 4, and the reflected light of the second vibrating mirror 4 is focused to the On the workpiece on the surface of stage 1,

[0028] The first vibrating motor is used to drive the first vibrating mirror 3 to move, so that the beam focused by the focusing lens 5 can move along the Y direction,

[0029] T...

specific Embodiment approach 2

[0035] Specific embodiment two: this embodiment is based on the processing method of the femtosecond laser processing system for the nano-twinned diamond tool described in the specific embodiment one, in this embodiment,

[0036] The light source 2 is turned on, so that the laser beam focused by the focusing lens 5 is incident on the surface to be processed of the workpiece.

[0037] Start the first vibration motor and the second drive motor, respectively drive the first vibration mirror 3 to move along the Y direction, and the second vibration mirror 4 to move along the X direction, so that the laser light after the focusing lens 5 is focused moves along a circular trajectory; In a complete circular trajectory, the number of similar blades n, laser pulse frequency f l and vibration frequency f of the galvanometer system g satisfy the following formula:

[0038] n=f l / f g .

[0039] The displacement stage 1 is driven to move along the Y direction to complete the machinin...

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Abstract

The invention relates to the technical field of laser machining, in particular to a femtosecond laser machining system for a nano-twin diamond tool, and a machining method based on the system. The problem that the nano-twin diamond tool cannot be prepared through traditional machining means is solved. Machining is conducted through energy beams, and is not limited by material performance in the material removing process, and the novel extremely hard tool can be machined; meanwhile, the single-time scanning width is determined by the circular vibration amplitude, stable material removal withinthe maximum vibration amplitude can be achieved, and thus the machining efficiency of the nano-twin diamond tool is usually improved by 10 times or above; and in the single-time scanning area, incident laser energy is more evenly distributed on the machined surface, strong ablation damage caused by a thermal effect of femtosecond lasers to the material surface is improved, and the machining accuracy is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of laser processing. Background technique [0002] With the rapid development of new difficult-to-machine materials, ceramic materials and superhard materials in the world and at home, the performance of new materials is gradually improved, and the demand for material removal and corresponding high-efficiency and high-precision parts forming is also increasing. Nano-twinned diamond (ntD) is a new type of diamond material with a hardness up to twice that of natural diamond (Hv ~ 200 GPa), which has broad and disruptive prospects as a machining tool. However, in traditional mechanical subtractive manufacturing methods (such as turning, milling, planing, grinding, etc.), the performance of the tool (such as turning tool, milling cutter, grinding wheel, etc.) material itself is lower than that of ntD materials, so the existing mechanical It is difficult to achieve efficient and high-precision processing of ntD ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/352B23K26/06B23K26/082
CPCB23K26/0643B23K26/0648B23K26/0821
Inventor 靳田野陈俊云赵清亮郭兵石卓奇计天宇
Owner HARBIN INST OF TECH
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