1. determine the feed speed: feed speed is generally based on experience, from the numerical point of general 0.08-0.12mm/, or 0.6-1.0mm/seconds, feed speed is a key factor in drilling, different feed can form different iron chips, different iron chips will make the chip discharge performance changes.
2. positioning: In the need to drill the position Center chisel to play a positioning point or with a gold needle on the "ten" word line, to ensure the accuracy of the drilling position.Note that when using the center chisel to play the positioning point, please make sure that the center chisel is perpendicular to the surface of the machined workpiece, so as not to affect the smooth discharge of the cutting material core.
3. the beginning of drilling: Turn down good suitable speed, before turning on to ensure that the bottom of the rig magnetic seat clean, first open the magnetic seat switch and then turn on the motor switch, the motor operation at the same time turn on the coolant switch, when the drill touch the steel plate, first slowly feed, drill into about 1-2mm, and then feed at normal speed.
4. Drilling end: Turn off the motor until the spindle stop turning, with iron hook in addition to the cloud wound on the drill body of iron chips, and then continue to work.