Precautions for deep hole machining.

Precautions for deep hole drilling processing

　　1、The main points of deep hole drilling operation

　　The coaxiality of the spindle and tool guide sleeve, toolholder support sleeve, workpiece support sleeve, etc. should meet the requirements; the cutting fluid system should be smooth and normal; there should be no center-center hole on the processing end face of the workpiece, and avoid drilling on the oblique surface; the chip shape should be kept normal to avoid generating straight ribbon chips; use a higher speed to process through holes, and when the drill is about to drill through, the speed should be reduced or stopped to prevent damage to the drill.

　　2、Note for using deep hole drill

　　1) The workpiece end face is perpendicular to the axis of the workpiece to ensure reliable end face sealing.

　　2) Pre-drill a shallow hole in the workpiece before formal processing to guide the centering role when drilling.

　　3)To ensure the tool life, it is better to use automatic tool walking.

　　4)The guiding elements in the feeder and the movable center-center support should be replaced in time if they are worn out, so as not to affect the accuracy of deep hole drilling.