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Drill bits for woodworking drilling machines
Commonly used drill bits for woodworking drilling machines include S-type drills, square drills, and twist drills. S-shaped drill bit, used to drill round eyes and long eyes. The ends of the long eyes are semicircular.
The square drill 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 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 drill
Twist drills are also divided into ordinary grade twist drills and 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 should be large when drilling soft wood.
Woodworking row drill bits, as the name suggests, are dedicated to row drilling rigs. There are left and right points for drilling rows. Some friends also say pros and cons. Usually, the right turn is used more. That is, forward rotation, or forward rotation. The most widely used specifications for row drilling are 8mm, 10mm, and 15mm.
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