Commonly used drill bits for woodworking drilling machines

Commonly used drill bits for woodworking drilling machines are S-type drills, square drills, and twist drills. S-shaped drill bits are used to drill round eyes and long eyes. The ends of the long eyes are semicircular.

The square drill bit is made up of a drill sleeve and a drill core.

The drill sleeve is equipped with a spiral drill core (spiral drill bit) to drill square holes. The square drill is a comprehensive drilling tool. The function of the drill core is to drill, and the function of the drill sleeve is to cut the circumference of the hole into square corners.

When the square drill is assembled, the clamp is first installed on the head plate, the drill is set on the clamp, and the drill core is installed in the drill chuck.

Twist drills are also divided into ordinary grade twist drills, cobalt-containing twist drills, of course, the people who use cobalt-containing twist drills are wrong, because the price is relatively expensive.

Twist drills are used to drill circular holes. The angle between the two cutting edges of the drill bit is the angle between the cutting edges of the drill. The sharp angle is small and the drill is sharp. Generally, the sharp angle of the drill is 90°, and the hard wood is drilled. The front angle should be small, and the front angle of drilling soft wood should be large.

Woodworking row drill bits, as the name suggests, are dedicated to row drilling rigs. There are left and right points in the row of drills. Some friends also say pros and cons. Normally, turning right is used more often. That is, forward rotation, or forward rotation. The most widely used specifications for row drilling are 8mm, 10mm, and 15mm.