Influence of the Support Structure on the Bandsawing Process when Separating LPBF Components from the Building Platform
More details
Hide details
Metal Cutting, Institute for Machine Tools (IfW) ) University of Stuttgart, Germany
Dina Becker   

Metal Cutting, Institute for Machine Tools (IfW) ) University of Stuttgart, Holzgartenstr. 17, 70174, Stuttgart, Germany
Submission date: 2022-04-30
Final revision date: 2022-06-20
Acceptance date: 2022-06-21
Online publication date: 2022-06-23
The method of laser powder bed fusion (LPBF) is an additive manufacturing process and allows great freedom of component geometry due to the layer-by-layer structure. The LPBF components are printed on a substrate plate and must be separated from the plate afterwards. Support structures are used to attach LPBF components to the substrate plate and to sustain overhanging parts. The cutting of the components is mainly carried out by means of a sawing process using the support structure. The forces occurring during this process are very challenging because the component has to be cut off without damage or deformation. The present study investigates and discusses the resultant forces and vibrations during the sawing of LPBF components made of titanium alloy TiAl6V4 using two different support structures. The components were arranged on the substrate plate at angles of 0°, 5°, 10°, 15°, 45° and 90° to the direction of primary motion.
DILBEROGLU U.M., GHAREHPAPAGH B., YAMAN U., DOLEN M., 2018, The Role of Additive Manufacturing in the Era of Industry 4.0, Procedia Manufacturing, 11, 545–554.
THOMPSON M.K., MORONI G., VANEKER T., FADEL G., CAMPBELL R.I., GIBSON I., BERNARD A., SCHULZ J., GRAF P., AHUJA B., MARTINA F., 2016, Design for Additive Manufacturing: Trends, Opportunities, Considerations, and Constraints, CIRP Annals, 65/2, 737–760.
KARAKURT I., LIN L., 2020, 3D Printing Technologies: Techniques, Materials, and Post-Processing, Current Opinion in Chemical Engineering, 28, 134–143.
DEBROY T., WEI H.L., ZUBACK J.S., MUKHERJEE T., ELMER J.W., MILEWSKI J.O., BEESE A.M., WILSON-HEID A., DE A., ZHANG W., 2018, Additive Manufacturing of Metallic Components – Process, Structure and Properties, Progress in Materials Science, 92, 112–224.
AVRAMPOS P., VOSNIAKOS G.C., 2022, A Review of Powder Deposition in Additive Manufacturing by Powder Bed Fusion, Journal of Manufacturing Processes, 74, 332–352.
WISCHEROPP T.M., 2021, Advancement of Selective Laser Melting by Laser Beam Shaping, Springer Vieweg, Berlin.
KRANZ J., HERZOG D., EMMELMANN C., 2015, Design Guidelines for Laser Additive Manufacturing of Lightweight Struktures in Tial6v4, Journal of Laser Application, 27, S14001.
BHUVANESH KUMAR M., SATHIYA P., 2021, Methods and Materials for Additive Manufacturing: a Critical Review on Advancements and Challenges, Thin-Walled Structures, 159, 107228.
ISAEV A., GRECHISHNIKOV V., PIVKIN P., KOZOCHKIN M., ILYUHIN Y., VOROTNIKOV A., 2016, Machining of Thin-Walled Parts Produced by Additive Manufacturing Technologies, Procedia CIRP, 41, 1023–1026.
MÖHRING H., BECKER D., MAUCHER C., 2022, Spanntechnik beim Absägen von AM-Bauteilen, wt Werkstatttechnik online, 112, 61–66.
DENKENA B., DITTRICH M.A., HENNING S., LINDECKE P., 2018, Investigations on a Standardized Process Chain and Support Structure Related Rework Procedures of SLM Manufactured Components, Procedia Manufacturing, 18, 50–57.
HINTZE W., WENSERSKI R., JUNGHANS S., MÖLLER C., 2020, Finish Machining of Ti6Al4V SLM Components Under Consideration of Thin Walls and Support Structure Removal, Procedia Manufacturing, 48, 485–491.
MAUCHER C., MÖHRING H.-C., 2020, Optimized Support Structures for Postprocessing of Additively Manufactured Parts, MIC Procedia, 20, 141–146.
MAUCHER C., TEICH H., MÖHRING H.-C., 2021, Improving Machinability of Additively Manufactured Components with Selectively Weakened Material, Prod. Eng. Res. Devel, 15, 535.