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Development of Precision
Cutting by Pulsed YAG Laser
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| Yoshinori FUNADA and Katsuyuki FUNAKI |
With the miniaturization and high-functionalization of the industrial
products, cutting with YAG laser is expected as a new precise machining.
However, the YAG oscillator with the rod shaped crystal has the influence
of the thermal distortion in it, and the condensing nature of the beam
is found to be low, making it unsuitable for cutting. Recently, the oscillator
with the slab shaped crystal is developed, which has no influence of the
thermal distortion. In this paper, the cutting behavior on this laser
is investigated, and the cutting quality is evaluated for the purpose
of the application to a precision cutting. The following results are obtained.
| (1) |
The dross free laser cutting can be made with
a kurf less than 60mm for the carbon tool steel. |
| (2) |
The oxidation of stainless steel during the laser
cutting can be prevented using nitrogen gas. |
| (3) |
Forming of the burr can be prevented by applying
ceramic powder. |
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Keywords ■■■ |
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slab type YAG laser, high precision
laser cutting, oxidation free cutting, burr free cutting |
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