How to use the cutting machine cut out a good sample, ZuoLong mechanical tell you?

In the cutting machine for cutting parts with high precision or large thickness, must grasp and solve several key technology. The focus position control is one of them. Cutting is one of the advantages of high energy density beam, so the focal spot diameter as small as possible, in order to produce a narrow kerf. Because of the focusing lens focal depth is smaller, the smaller focal spot diameter, for high quality cutting, the effective depth of focus also is cut and lens diameter and related materials. So control focal point relative to the cut material on the surface of the position is very important.





because of power density had a great influence on cutting speed, lens focal length selection is an important problem. After focusing beam spot size is directly proportional to the lens JiaoChangCheng, after short focal length lens to focus the light beam spot size is small, the focus in high power density, the material cutting is strong; But its drawback is that the depth is very short, adjust the margin is small, is generally applicable to the high speed cutting thin materials. Due to the long telephoto lens has a wide depth of focus, as long as have the enough power density, suitable for cutting thick artifacts.

in determining which after a long lens focal focal point and the relative position of the workpiece surface to guarantee the cutting quality is especially important. Because of the focus in high power density, in most cases, the focus position just in cutting the workpiece surface, or slightly below the surface. In the whole cutting process, to ensure focus and workpiece position relatively constant is important condition to obtain the stable cutting quality. Sometimes, lens work because of poor cooling and heat causing focal length change, it's need to adjust the focus position.

when the focal point in the right position, small slot, high efficiency, cutting speed can obtain good cutting result. Applied in most cases, the light beam focus to just under the nozzle. About 5 mm.

in the application process, often encounter is focused on the problems such as, there are three kinds of common and a simple method to determine the focus position:

( 1) Printing method: make the cutting head movement, down on beam on the plastic printing, print a small diameter as the focus.

( 2) Inclined plate method: use and a vertical axis Angle of inclined put plastic board makes its pull, level for relatively small in beam focus.

( 3) Blue spark method: remove the nozzle, blowing air, will play on stainless steel plate, the pulse makes the cutting head from the top down movement, until to focus with strong blue sparks.

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