Process Combination for the Manufacturing of Deep Holes with Small Diameters

Abstract:

The industrial relevance of bore holes with small diameters and high length-to-diameter ratios rises with the growing requirements on parts and the tendency of components toward downsizing. Examples are components for medical and biomedical products or fuel injection in the automotive industry. An adapted process design is necessary for the production of deep holes with very small diameters, especially when the conditions at the beginning of the deep hole drilling process are unfavorable. In these applications, a hybrid process consisting of a laser pre-drilling and a single-lip deep hole drilling can shorten the process chain in machining components with non-planar surfaces, or can reduce tool wear in machining case-hardened materials. In this research, the combination of laser and single-lip drilling processes was realized and investigated for the very first time. In addition, results for the machining of workpieces with non-planar surfaces are presented.

• Periodical: Advanced Materials Research (Volume 907)
• Pages: 265-275
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.907.265
• Online since: April 2014
• Authors: Marko Kirschner*, Markus Heilmann, Dirk Biermann
• Keywords: Combination of Drilling Processes, Hybrid Manufacturing, Laser Drilling, Single-Lip Deep Hole Drilling

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