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Center bitconcentric drill bitsIt was mostly used in lathes early to drill the center hole of shaft parts.With the increasing popularity of automation, it should be more widely used in multi-function CNC equipment.Its big function is to point the center hole to ensure the position of the part hole processing.

Center bitBrisk cutting and good chip removal.There are two types of center drills: Type A: Center drill without cone guard, Type B: Center drill with cone guard, when processing the center hole with diameter d=2~10mm, the center drill without cone guard ( Type A); For workpieces with longer processes and higher precision requirements, in order to avoid damage to the 60-degree centering cone, a center drill with a guard cone (Type B) is generally used.

The user must reasonably select the center drill model according to the hole type and straight hole size of the processed part.

Before the tool is used, the anti-rust grease must be cleaned to prevent the chips from sticking to the cutting edge and affecting the cutting performance.

The surface of the workpiece to be processed should be straight, without blisters or hard spots, so as to avoid damage to the tool.

The center drill before drilling should reach the required position accuracy. ¡¡

Cutting amount

Cutting fluid: Choose different cutting fluids according to the processing object, and the cooling should be sufficient.

Matters needing attention: If there is an abnormal situation during processing, stop immediately and find out the reason before processing; pay attention to the wear of the cutting edge and repair it in time; the tool should be cleaned and oiled after use.

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