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State-of-the-art post processing technology ensures significant quality improvement of the de-powdering and cleaning operation for 3D printed components at lower costs and shorter cycle times. A leading manufacturer of recreational vehicles is fulfilling this goal with the purchase of the automated post processing system S1 from AM Solutions — 3D post processing technology.
With their innovative designs and powerful drive systems the motor homes, caravans and panel trucks of Knaus Tabbert allow safe, comfortable and sustainable travelling. At its German headquarters in Jandelsbrunn, Bavaria, the company is utilizing its comprehensive experience and know-how to continuously improve the materials and designs of its vehicles. Naturally, this also includes the employment of new manufacturing technologies such as additive manufacturing (AM). Mario Meszaros, development engineer at Knaus Tabbert explains: “On the one hand we are using the 3D printing technology for creating prototypes. On the other hand we are also utilizing additive manufacturing for producing standard components in volume such as the bracket for an alarm system or the hinge mechanism for the swing-out shower stall”.
To date the de-powdering and cleaning of PA 12 components, produced by a powder-bed printing system, was done manually in a blast cabinet. Since this post processing operation required not only a lot of labor and time but also produced highly erratic and inconsistent results, the company was looking for an automated alternative.
Therefore, comprehensive processing trials were run with different components in the Customer Experience Center of AM Solutions — 3D post processing technology. This division of the Rösler group specializes in post processing solutions for 3D printed components. After conclusion of the highly successful processing trials the customer chose the S1 shot blasting system.
Vapour smoothing produces 3D printed parts with enhanced surface finish
This shot blast machine was specifically developed for the post processing of plastic components produced with the powder bed printing method. The plug and play S1 is the only machine on the market that allows the time-saving and cost-efficient de-powdering as well as surface smoothing and homogenization of 3D printed components in one single machine. All that is required, is a simple change of the blast media, for example, from glass beads to plastic spheres.
The S1, equipped with a basket that rotates during the finishing operation and allows easy, ergonomic loading and unloading of the work pieces, allows fully automatic batch processing. Throughout the entire process the basket remains in the machine housing. This, combined with a special door sealing system, prevents any powder spillage into the immediate surroundings. The control panel allows an easy and quick switch to manual operation without any retooling. „More and more companies from different industries are choosing the S1 for post processing of their 3D printed components. This is a confirmation for our product strategy. It shows that our 3D post processing products are in full compliance with the requirements of the market”, adds Manuel Laux, Head of AM Solutions — 3D post processing technology.
The plug and play S1 is the only machine on the market that allows the time-saving and cost-efficient de-powdering as well as surface smoothing and homogenization of 3D printed components in one single machine. (Source: Rösler Oberflächentechnik)
Mario Meszaros comments: “The fact that after surprisingly short cycle times the components came out of the machine perfectly clean and without any powder residues was very impressive”. He continues: “With the underlying operating data I prepared a ROI calculation. The results quickly convinced our management: Even with only three print jobs per week in the S1, we already achieve a return on investment after roughly two years. However, it is safe to assume that the quantity of 3D printed components will increase significantly. This will drastically reduce the amortization period.”
The benefits of the S1 are not only limited to the excellent processing results and the quick amortization. In its standard version it also features a system that automatically monitors and records all relevant process parameters. The integrated blast media cleaning and recycling system represents another reason for the high process stability. It ensures that irrespective of the media type the media is always available in perfect condition. Another plus is the explosion protected design of the shot blast machine with ATEX compliant motors and valves. Mario Meszaros concludes: “I am absolutely convinced that the simple, effective and efficient post processing possibilities of the S1 will further promote the use of additive manufacturing in our company”.
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