What Is The Difference And Use Of Twist Drills And Construction Drills

March 04,2021

Novices are exploring the difference between drilling tools, such as different types and different materials, and are constantly exploring. I believe you will have a clear understanding of some tools after reading this article. Learn about the difference between the material of the drill bit, twist drill and construction drill.

Drills Material

Regarding the material, in fact, the names of many drill bits are very vague and unprofessional. Twist drills for metal hole processing are high-carbon steel, high-speed steel, cobalt-containing high-speed steel, and cemented carbide according to the price and performance of the material, and there will be no other materials.

What Is The Difference And Use Of Twist Drills And Construction Drills

Cemented carbide twist drills have been developed rapidly to meet the needs of high-efficiency processing in the automotive industry and the processing of plastic-reinforced fiberglass circuit boards (PCB) in the IT industry.

Application

When drilling holes on the PCB, it is required that there is no glass fiber fuzz at the exit of the hole. With the miniaturization of computers and mobile phones, the diameter of drill bits will develop in a smaller direction, and there are carbide twist drill bits with a diameter of 0.08mm.

1. Twist drills are generally used to drill metal. Construction drills are actually percussion drills, which are mostly used for drilling concrete masonry.

2. Twist drill is a tool for drilling round holes of workpieces by rotating cutting relative to a fixed axis. It is named because of the spiral shape of the chip flute, which resembles a twist.

3. The impact drill relies on rotation and impact to work. A single impact is very slight, but the impact frequency of more than 40,000 per minute can produce a continuous force and can be used for natural stone or concrete. When the impact drill is working, there is an adjustment knob at the drill chuck, which can be adjusted in two ways: ordinary electric drill and impact drill. But the impact drill uses the gears on the inner shaft to jump to each other to achieve the impact effect, but the impact force is far less than that of the electric hammer. It is not suitable for drilling reinforced concrete.