NEWS

1, determine the feed speed: feed speed is generally based on experience, from the numerical point of view generally 0.08-0.12mm/ RPM, or 0.6-1.0mm/ SEC, feed speed is a more critical element in drilling, different feed rates can form different iron filings, different iron filings will make chip removal performance changes

2. Positioning: Chisel a certain point in the center of the position that needs to be drilled or use a alloy needle to mark the "cross" line to ensure the accuracy of the drilling position. Note that when using the center chisel to set the anchor point, please ensure that the center chisel is perpendicular to the surface of the workpiece, so as not to affect the smooth discharge of the cutting core.

3, Start drilling: please adjust the appropriate speed, please make sure that the bottom of the magnetic base of the drill is clean before starting, open the magnetic base switch and then open the motor switch, the motor runs at the same time to open the coolant switch, when the drill touches the steel plate, the first slow feed, drill into about 1-2mm, and then use the normal speed feed.

4, the end of drilling: turn off the motor until the main shaft stops rotating, use the iron hook to remove the iron filings wrapped around the drill body, and then continue the operation.