Article | REF: BM7180 V1

High-speed machining

Authors: Alain-L. DEFRETIN, Gérard LEVAILLANT

Publication date: January 10, 1999

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1. General

1.1 Towards high-speed machining

  • Let's carry out a first experiment: let's turn a medium-hard steel log with a CNMG 120408 type tool, the geometry is semi-finished, and the cutting material is coated carbide. The depth of cut is 2.5 mm and the feed rate 0.3 mm · tr -1 ; let's vary the cutting speed from a very low value, say 5 m · min -1 . What do we observe?

    • At very low speeds, the tool does not cut or cuts under very poor conditions; the chips are poorly formed, the surface produced is rough and irregular, and the tool is loaded with an adherent chip that causes rapid tool wear (adhesive wear).

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