Details
| Original language | English |
|---|---|
| Pages (from-to) | 53-56 |
| Number of pages | 4 |
| Journal | CIRP Annals - Manufacturing Technology |
| Volume | 57 |
| Issue number | 1 |
| Publication status | Published - 9 May 2008 |
Abstract
At present the machining of highly ductile electrolytic copper ECu 57 with gun drills is carried out at very low feed values, as the material tends to form very long and unfavourable chips. In addition, high frictional forces on the guide rails cause high torsional strain on the gun drill. This paper first reports on the results of ultrasonically assisted deep hole drilling in ECu 57 with tools of 5 mm diameter. The actuator system for exciting axial vibrations in the ultrasonic range is described and experimental results which were obtained from cutting tests are reported. Particular emphasis is put on the improvements compared with the conventional drilling technology without superimposed vibrations. The effect of different input amplitudes is investigated in detail. The performance criteria are drilling moment, surface quality, chip form as well as the surface zone. By optimising the vibration amplitude, cutting speed and feed, the machining result was improved compared with conventional machining, and at the same time the stability of the machining process was simultaneously increased.
Keywords
- Deep hole, Drilling, Ultrasonic
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: CIRP Annals - Manufacturing Technology, Vol. 57, No. 1, 09.05.2008, p. 53-56.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Ultrasonic deep hole drilling in electrolytic copper ECu 57
AU - Heisel, U.
AU - Wallaschek, J.
AU - Eisseler, R.
AU - Potthast, C.
N1 - Funding Information: The research was supported by the German Research Foundation (DFG), HE 1656/75-1, WA 564/10-1. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/5/9
Y1 - 2008/5/9
N2 - At present the machining of highly ductile electrolytic copper ECu 57 with gun drills is carried out at very low feed values, as the material tends to form very long and unfavourable chips. In addition, high frictional forces on the guide rails cause high torsional strain on the gun drill. This paper first reports on the results of ultrasonically assisted deep hole drilling in ECu 57 with tools of 5 mm diameter. The actuator system for exciting axial vibrations in the ultrasonic range is described and experimental results which were obtained from cutting tests are reported. Particular emphasis is put on the improvements compared with the conventional drilling technology without superimposed vibrations. The effect of different input amplitudes is investigated in detail. The performance criteria are drilling moment, surface quality, chip form as well as the surface zone. By optimising the vibration amplitude, cutting speed and feed, the machining result was improved compared with conventional machining, and at the same time the stability of the machining process was simultaneously increased.
AB - At present the machining of highly ductile electrolytic copper ECu 57 with gun drills is carried out at very low feed values, as the material tends to form very long and unfavourable chips. In addition, high frictional forces on the guide rails cause high torsional strain on the gun drill. This paper first reports on the results of ultrasonically assisted deep hole drilling in ECu 57 with tools of 5 mm diameter. The actuator system for exciting axial vibrations in the ultrasonic range is described and experimental results which were obtained from cutting tests are reported. Particular emphasis is put on the improvements compared with the conventional drilling technology without superimposed vibrations. The effect of different input amplitudes is investigated in detail. The performance criteria are drilling moment, surface quality, chip form as well as the surface zone. By optimising the vibration amplitude, cutting speed and feed, the machining result was improved compared with conventional machining, and at the same time the stability of the machining process was simultaneously increased.
KW - Deep hole
KW - Drilling
KW - Ultrasonic
UR - http://www.scopus.com/inward/record.url?scp=43649089758&partnerID=8YFLogxK
U2 - 10.1016/j.cirp.2008.03.078
DO - 10.1016/j.cirp.2008.03.078
M3 - Article
AN - SCOPUS:43649089758
VL - 57
SP - 53
EP - 56
JO - CIRP Annals - Manufacturing Technology
JF - CIRP Annals - Manufacturing Technology
SN - 0007-8506
IS - 1
ER -