Tool Wear in Milling Hardened Die Steel

Author:

Nelson S.1,Schueller J. K.1,Tlusty J.1

Affiliation:

1. Department of Mechanical Engineering, University of Florida, Gainesville, Florida 32611

Abstract

Tool wear is an important limiting factor in machining hardened steel. Plane milling of H13 hot work tool steel (42–46 HRC) was conducted on a three-axis machine to obtain flank wear data with the objective of finding operating parameters providing extended tool life. Microgram carbide and PCBN tipped carbide round inserts in an off-center ball nose end mill with a single cutting edge were considered. Tool life was longer for the micrograin carbide inserts when cutting speeds were near 150 m/min. The PCBN grades performed best at the highest speed tested. A limited radial and axial depth of cut with a larger maximum chip thickness provided the best tool life over the parameters tested.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Reference16 articles.

1. Bieker, R., 1995, “High-Speed Die Milling with PCBN,” Industrial Diamond Review, 55.564, pp. 1–3.

2. Fallbohmer, P., Altan T., To¨nshoff, H., and Nakagawa, T., 1995, “Survey of the Die and Mold Manufacturing Industry,” The International Advanced Technology for Die and Mold Manufacturing Conference, ERC/NSM, Oct 11–12.

3. GE Superabrasives, 1991, “Polycrystalline Products for Machining Applications,” Product literature.

4. Ko¨nig W. , KomanduriR., To¨nshoffH. K., and AckershottG., 1984, “Machining of Hard Materials,” Annals of the CIRP, 33.2, pp. 417–427.

5. Ko¨nig W. , and Link KlingerR., 1990, “Machining Hard Materials with Geometrically Defined Cutting Edges—Field of Applications and Limitations,” Annals of the CIRP, 39.1, pp. 61–64.

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