Drilling is a drilling machine tools, both for processing parts on a simple hole, can also be used for processing complex shape, there is no symmetry axis rotary single workpiece or a series of cylindrical holes, such as cover, box, rack and other parts on the various uses of holes.
CNC drilling machine and CNC milling machine is a circuit board of a major processing equipment, which is expensive, not only for the selection of NC machine tool operations, including setup and maintenance process for the production of quality products is very important.
As a pure technology personnel for technical and operational considerations, the choice of indicators of CNC machine tools in general from the following aspects: 1. Machine tool rigidity and stability of the table: In order to have sufficient stability of machine tools, rigid to avoid vibration in many manufacturers have used the marble as a bed of material, some of Japan's steel manufacturers to use the bed so, as the steel at different deformation temperature than marble, and instability in the software vendors will use the compensation to eliminate distortion caused by the accuracy of loss. Most manufacturers are using natural or man-made marble and marble as a bed, it is recommended the use of marble bed equipment, the maintenance of marble in peacetime use detergent and water scrubbing can not be used to alcohol.
2. Spindle speed and stability:
At present, there are two axes used for the rolling bearing a maximum speed to 80,000, another for the air bearing speed transfer up to 120,000. If it is milling roller bearing should be used because the vertical load bearing than air, and its drilling chuck is also the focus of procurement is the scope of the study, some of drilling chuck is not easy to replace the maintenance of the difficulties, some wear and tear of drilling chuck and supplies quickly became replacement cost is very expensive, and some require daily maintenance of a waste of time. The pressure foot shaft is another, and its design life and unreasonable would also cause a lot of trouble, such as foot-and pressure caused by vacuum cleaners are not sealed to a lot of purchasing power caused by the vacuum cleaner or central vacuum cleaner waste of money power waste, and is likely to produce circuit boards Chip hole poor.
