Ultra-High-Speed Machining: Notes on Metal Cutting at Speeds up to 7300 Ft/s

  • G. Arndt


An earlier study of UHSM (V > 500 ft/s) by the author showed that metal cutting at such speeds should theoretically be beneficial for certain workpiece materials, and described experimental cuts in the range 1770 < V < 5200 ft/s. In the present study this range is extended to 7300 ft/s by cutting aluminium with HSS tools at depths of cut from 0.003 to 0.070 in, and 0.250 in width. To do this the suitably modified ballistic test system at Monash University was used to its operational limits. It was found that the extreme dynamic effects at the tool tip cause severe chipping and/or fracture. However, good cuts are still achieved, as was the case in the previous tests, whereas chip analysis becomes increasingly difficult. These effects are discussed and some comments on the practical application of UHSM are given.


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  1. 1.
    R. L. Vaughn. Ultra-high-speed machining. AMC technical Report 60–7-635(1), 1960.Google Scholar
  2. 2.
    G. Arndt. Ballistically induced ultra-high-speed machining. Ph.D. Thesis, Monash University, Melbourne, Australia, 1971.Google Scholar
  3. 3.
    G. Arndt. Ultra-high-speed machining: a review and an analysis of cutting forces. Proc. Inst. Mech. Eng. (1973) 187, 625–634.CrossRefGoogle Scholar
  4. 4.
    G. Arndt and R. H. Brown. Design and preliminary results from an experimental machine tool cutting metals at up to 8000 feet per second. Proc. 13th Int. MTDR Conf, Macmillan, 1972, pp. 217–223.Google Scholar
  5. 5.
    G. Arndt and J. T. McHenry (1970). A computerised internal ballistic analysis of conventional gun systems with muzzle velocities of up to 8000 ft/s. Explosivstoffe (1970) 18, 253–267.Google Scholar
  6. 6.
    G. Arndt. The construction of, and experimental ballistic results from, a high-velocity gun system used for metal cutting. Accepted for publication in Explosivstoffe (1973).Google Scholar
  7. 7.
    R. H. Wentorf, Jr. Private communication.Google Scholar

Copyright information

© Macmillan Publishers Limited 1975

Authors and Affiliations

  • G. Arndt
    • 1
  1. 1.Department of Mechanical EngineeringMonash UniversityAustralia

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