Aperture size control Using a small divergence angle of the laser (0.001 ~ 0.003rad), shorten the focal length or reduce the output energy to obtain a small aperture. For high melting point. Thermal conductivity of the material can achieve a good hole diameter of 0.01 ~ 1mm micro-hole processing, the minimum pore size up to 0.001mm.
Hole depth control to improve the high power laser pointer output energy, the use of a reasonable pulse width (the better material and thermal conductivity, should take shorter pulse width), the application of basic mode mode deep. For the small diameter of the deep hole is appropriate laser irradiation, and with a short focal length (15 ~ 30mm) objective lens drilling.
Improve the roundness of the laser processing hole Laser mode using the basic mode of processing, focusing lens with aberrations of the objective lens, and the lens optical axis coincides with the laser beam axis, the workpiece is suitable for deviation from the focus point and select the appropriate laser energy can improve the processing of roundness .
Reducing the taper of a hole Usually, the taper of a hole increases as its aperture ratio increases. Appropriate burning laser pointer output energy or small energy multiple illumination, short focal length, small lens refraction index and reduction of incident light and optical axis Angle and other measures can reduce the hole taper.
Laser cutting machine with flying light path, in the cutting process, only the cutting head in the X, Y direction of movement, the table position fixed. There is also a hinged movable arm fixed optical path flight beam transmission form, known as the constant flight optical path, referred to as constant light road. From the device drive mode, there are X, Y axis selection of single-side servo motor configuration of the corresponding reducer, with high-precision rack and pinion drive structure; X axis both sides are used servo motor configuration of the corresponding reducer, with high precision A servo-motor configuration of high-precision ball screw direct drive, the use of disk-type high inertia motor direct gear, rack drive; there is a direct drive linear motor (Figure 1), the use of linear motor drive, Of the structure. The lasers are equipped with a co2-axis fast-flow 5mw laser pointer, an RF-board debug laser, a swirling laser, a solid-state laser, and a coaxial laser, respectively, depending on the user's processing performance, processing material, shape and size. Fiber lasers and the like.
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