There’s a blank screen shortcut key on the cell phone jammer body

Compound earlier in the laser punching machine is the first out of a hole punch, and then use the laser from the hole to start cutting.
For high-quality cutting, effective depth of focus has been cut and the lens diameter and material related. For example, with 5 lens 〃 cutting carbon steel, depth of focus as the focal length of the 2% range, that is about 5mm. Hence, the control point relative to the surface of the material being cut is very important. Concern to the cutting quality, cutting speed and other factors, in principle, 6mm metal materials, the focus on the surface; 6mm carbon steel, the focus above the surface; 6mm stainless steel, the focus below the surface.Press the shortcut key for full screen displaying on the body of  cell phone jammer  and you can get the PPT file displaying in full screen. The specific size determined by experiment. In industrial production easy way to determine the focus position in three ways: (1) Printing method: the cutting head from the top down movement, the laser beam in the plastic sheet printing, print the minimum diameter at the focus. (2) the ramp method: using and the vertical axis at an angle into a plastic plate to pull the level to find the smallest laser beam at the focus. (3) blue spark method: remove the nozzle, blowing air, the pulse laser in a stainless steel plate, the cutting head from the top down movement, until the blue spark at maximum focus. Press again the shortcut key on the  cell phone jammer  body and you may cancel the full screen display mode.For the light path of the cutting machine, the beam divergence angle, cutting the length of the proximal and distal processes of different time, pre-focused beam size there are some differences. Larger the diameter of the incident light beam, the smaller the focal spot diameter. In order to reduce the beam size before the change in focus brought about changes in the focus spot size, domestic and foreign manufacturers of laser cutting system provides a number of special devices for users to choose: (1) collimator. This is a commonly used method, namely CO2 laser output plus an expanded beam collimator for processing, after the beam expander larger beam diameter, divergence angle becomes smaller, so that within the scope of work in cutting the proximal and distal focused beam size close to the front line.There’s a blank screen shortcut key on the  cell phone jammer  body. (2) an increase in the cutting head of an independent movement under the lens axis, it nozzles to the surface and control the distance (stand off) the Z-axis are two independent parts. When moving the machine table or moving the optical axis, the beam axis from proximal to distal F also move, so after focusing the beam spot diameter is consistent throughout the processing area. Shown in Fig. (3) control the focusing mirror (usually metal reflector focusing system) pressure. If the focused beam size before leaving the smaller focus spot diameter becomes larger, the automatic control of pressure to change the focus of curvature smaller focal spot diameter. (4) flying optics cutting machine by x, y direction of the optical system of compensation. It would be a good choice to press the blank screen shortcut key on the  cell phone jammer  body if you want to discuss something with the audience.That is, when cutting a remote optical path increases to compensate for optical path shortened; the other hand when cutting near the optical path is reduced, the optical path to increase compensation in order to maintain the same optical path length. Cutting any kind of piercing technology thermal cutting technology, except for a few cases can be started from the edge of the board, in general, must wear a hole in the board.