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What is the purpose of high-speed steel three sided milling cutter with staggered teeth
High speed steel three sided milling cutters with staggered teeth are mainly used for efficient milling of deep grooves, wide grooves, step surfaces, and side surfaces. They are suitable for medium hardness metals (carbon steel, cast iron, etc.) and are known for smooth cutting, good chip removal, and low vibration.Sources：www.cssjlgj.com | PublishDate：2026.05.25
1、 Core purpose
Milling deep grooves/fixed value grooves: Processing deep straight grooves, keyways, T-shaped grooves, etc., forming them in one go with accurate dimensions and high efficiency.
Milling step surface: The end face edge participates in cutting, taking into account both horizontal and vertical processing, reducing tool changes.
Side and Root Cleaning: The secondary blades on both sides are used to polish the side walls and clean the roots, reducing surface roughness.
Medium hardness materials: carbon steel, alloy steel, cast iron, non-ferrous metals, and some non-metallic materials.
Ordinary machine tool processing: suitable for horizontal milling machines, gantry milling machines, etc., with good economic efficiency for medium and low-speed cutting.
2、 Advantages of misaligned teeth structure (compared to straight teeth)
Smooth cutting: The cutting teeth are staggered and inclined left and right to counteract radial forces, resulting in low vibration and noise.
Smooth chip removal: spiral chip groove, deep groove processing is not easy to block chips.
High blade strength: staggered teeth disperse the load, resulting in longer tool life.
Good surface quality: The side blade has a positive rake angle, and the side wall has a higher smoothness.
3、 Material and applicable working conditions
High speed steel (HSS): Low cost, easy to grind, suitable for conventional materials such as carbon steel and cast iron, cutting at medium and low speeds (≤ 30m/min).
Common specifications: diameter 63-125mm, width 6-20mm, suitable for ordinary machine tools and small to medium batch production.