Precautions For Use

The following points should be noted when use various drills：First of all,Choose the right bit type and size according to different materials and drilling needs.Secondly, the proper speed and feed rate should be maintained during use to avoid damage or accidents caused by improper operation.Finally, the drill should be cleaned and maintained in time after use to extend its service life.

Sharpening the drill is a prerequisite

Before drilling, the corresponding drill bit should be selected for sharpening.In order to facilitate centering and reduce the roughness of the small hole wall, the transverse edge and the main cutting edge should also be properly trimmed (it is best to rough grind on the grinder first, and then fine repair on the oil stone).

Proper clamping is key

Under normal circumstances, for holes with a diameter of less than 6mm, if the precision requirement is not high, the workpiece can be clamped with a pair of pliers for drilling.If the workpiece is regular and flat, it can be held with flat pliers, but the surface of the workpiece should be perpendicular to the spindle of the drilling machine.When drilling a hole with a large diameter, you must secure the flat pliers with a bolted clamping plate.For large workpieces and drilling diameter of more than 10mm, the pressing plate clamping method is used for drilling

Accurate alignment is the key point.

After the workpiece is installed, do not rush to drop the drill, and should first find the right.There are static alignment and dynamic alignment.Static alignment means that alignment is carried out before the drill machine starts, so that the center line of the drill machine spindle is aligned with the intersection of the work piece reticle.This method is safe and convenient for beginners and easier to master.However, because uncertain factors such as the swing of the spindle of the drilling machine are not considered, the drilling accuracy is low.The dynamic search is to find after the drilling machine starts, and at the same time, some uncertain factors are taken into account, the accuracy is relatively high.

In summary, different types of drill bits have their own characteristics and application scenarios. The correct selection and use of drill bits can improve work efficiency and machining quality, while also extending the service life of the tool.