What kind of drill is used to punch holes in steel plates?

Ordinary 20mm high-speed steel bits can be used to drill steel plates. Now there is also a special steel plate drill (also called hollow drill), which has fast drilling speed and the interface can be directly installed on the magnetic drill. 20mm thick steel plate can be drilled in 10 second, which has obvious advantages, but the drilling cost is relatively high.

A high-strength drill bit can generally drill to 3 mm. More than 3 mm will damage the drill bit, and the general high-speed steel drill bit can completely meet it.

Extended data:

Structural degree of steel plate drilling rig

The main structure of magnetic drilling rig consists of rotor, stator, transmission shaft, guide rail, transmission gear set, circuit board and electromagnetic induction coil.

Seat, its aluminum, high-strength plastic, iron top casting

The working principle of the steel plate drill In the case of power supply, the steel plate drill generates thousands of kilograms of magnetic force through electromagnetic action, so that it can be adsorbed on it.

Steel plates and structural members play the role of fixing the machine. The stronger the magnetic force, the better the health of the magnetic drill when it works.

The higher the stability, the higher the drilling accuracy.

When the machine switch is turned on, the rotor part of the machine rotates at high speed, and then the transmission shaft is driven to rotate through the transmission gear set.

Drive the drill bit to move, and cut the hole through the drill bit at the position where drilling is needed, compared with flame drilling.

The hole return accuracy is high, which belongs to physical cutting, and it will not produce chemical reaction and will not deform the material.

Bit front end removal

In addition to traditional twist drills, there are also hollow centering drills specially used for magnetic drills, which use milling cutters.

Principle, high efficiency and good precision.

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