Drill bits and milling cutters are the most commonly used cutting tools in parallel. Some readers have reported that they are not very clear about the differences between different drill bits. Through previous article comments, they hope that we can summarize the basic introduction of different drill bits. Thank you for the reader's interaction. Zhangzhiyuan has compiled a basic introduction to 12 types of drill bits, hoping to be helpful to everyone.

twist drill

Fried Dough Twists drill is a kind of drill with spiral shape, which is mainly characterized by efficient chip removal and cooling, and is suitable for various drilling processing of metal, wood, plastic and other materials.

(1) Structural characteristics

① Spiral groove: extending along the length of the drill bit, used for chip removal and cooling.

② Drill tip: usually at an angle of 118 degrees or 135 degrees, convenient for positioning and cutting.

③ Main cutting edge: located at the forefront of the spiral groove, responsible for most cutting work.

④ Secondary cutting edge: located on both sides of the drill tip, it assists in cutting and improves machining quality.

⑤ Drill body diameter: The diameter of the drill body is usually uniform, ensuring that the diameter of the borehole is consistent.

⑥ Guidance section: located at the rear of the drill body, it helps to stabilize the direction of the drill bit and reduce vibration.

⑦ Chip removal groove width: determines the chip removal capacity, usually optimized based on material and aperture design.

(2) Advantages of drill bits

① Strong universality: Suitable for various materials such as metal, wood, and plastic, widely used in various drilling tasks.

② Efficient chip removal: The spiral groove design helps to effectively remove chips, improve machining efficiency and quality.

③ Easy to operate: Suitable for various processing equipment, such as desktop drilling machines, handheld drills, and CNC machines, with simple operation.

(3) Applicable scenarios

① Medium precision hole processing: when it is necessary to drill holes on various materials quickly and with medium precision requirements, the Fried Dough Twists drill is an ideal choice (for example, when manufacturing automobile parts, it is necessary to drill holes on the steel plate to install bolts, and the accuracy requirements of these holes are medium, but the processing of multiple holes needs to be completed quickly)

② Conventional drilling operations: suitable for daily maintenance, assembly, and general manufacturing tasks, especially for situations that require flexible adaptation to multiple materials (such as drilling holes on wooden boards to fix screws during furniture assembly). These drilling operations do not require very high precision, but need to adapt to different wood materials

③ Efficient processing in mass production: In mass production that requires efficient and rapid drilling, Fried Dough Twists drills are widely used because of their efficient chip removal and durability (for example, in the manufacturing of electronic product shells, a large number of small holes need to be drilled quickly to install components, and Fried Dough Twists drills can meet the efficient drilling needs of mass production because of their efficient chip removal capacity and durability)