Activities per year
Abstract
Selective Laser Melting (SLM), as a fast-growing metal-based Additive Manufacturing technology, allows to produce high strength parts with complex geometries. However, limited part properties in the as-built condition require effortful post-processing tasks (e.g. milling, drilling, polishing) to meet technical specifications and tolerances. This significantly increases the manufacturing costs of SLM parts. To address this problem, the concept of Direct Machining is presented. Direct Machining is defined as the post-processing of SLM parts via machining without prior removal of the parts from the build platform to achieve economic benefits. For this, the support structures have to withstand the occurring cutting forces during machining — a task for which they were not initially designed.
The aim of this study is to investigate the load capacity of 316L SLM support structures. For this, machining experiments on a five-axis milling machine were conducted. Cutting parameters, support geometries and support volume were varied and the cutting forces were measured to investigate their influence on the stability of the support structures. Results show, that deliberate SLM support structures allow precise machining directly on the build platform. Furthermore, a theoretical load model of Direct Machining is developed. Based on this, further optimization of the support structures regarding cutting force absorption and material volume are presented.
The aim of this study is to investigate the load capacity of 316L SLM support structures. For this, machining experiments on a five-axis milling machine were conducted. Cutting parameters, support geometries and support volume were varied and the cutting forces were measured to investigate their influence on the stability of the support structures. Results show, that deliberate SLM support structures allow precise machining directly on the build platform. Furthermore, a theoretical load model of Direct Machining is developed. Based on this, further optimization of the support structures regarding cutting force absorption and material volume are presented.
Original language | English |
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Title of host publication | Advanced Manufacturing |
Subtitle of host publication | Volume 2A: Advanced Manufacturing |
Publisher | American Society of Mechanical Engineers (ASME) |
Number of pages | 8 |
ISBN (Electronic) | 978-0-7918-5937-7 |
DOIs | |
Publication status | Published - 21 Jan 2020 |
Event | ASME 2019 International Mechanical Engineering Congress and Exposition: IMECE 2019 - Calvin L. Rampton Salt Palace Convention Center, Salt Lake City, United States Duration: 11 Nov 2019 → 14 Nov 2019 https://event.asme.org/IMECE/ |
Publication series
Name | ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) |
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Volume | 2A-2019 |
Conference
Conference | ASME 2019 International Mechanical Engineering Congress and Exposition |
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Abbreviated title | ASME IMECE 2019 |
Country/Territory | United States |
City | Salt Lake City |
Period | 11/11/19 → 14/11/19 |
Internet address |
Keywords
- Additive manufacturing
- Cutting forces
- Direct machining
- Post-processing
- Selective laser melting
- Support structures
ASJC Scopus subject areas
- Mechanical Engineering
Fields of Expertise
- Mobility & Production
Treatment code (Nähere Zuordnung)
- Experimental
Activities
- 1 Talk at conference or symposium
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Load Capacity of Support Structures for Direct Machining of Selective Laser Melted Parts
Christian Höller (Speaker), Philipp Zopf (Contributor), Philipp Schwemberger (Contributor), Rudolf Pichler (Contributor) & Franz Haas (Contributor)
13 Nov 2019Activity: Talk or presentation › Talk at conference or symposium › Science to science