Atomic Diffusion AdditiveManufacturing (ADAM) is a recent metal sintering process based on known composite printing technology. ADAM can be classified as indirect additive production using fibre of metal powder bound in a plastic matrix. The plastic binder allows the metal powder to remain in place when is printing. Thus, a "green part" is printed and then the plastic binder is removed by the postwashing and sintering process. The aim of this work is providing a brief description of the ADAM process patented by Markforged. Furthermore, the main task was to compare the technology with other sintering technology, namely SLM technology. It works on the basis of selective bonding of metal powder using the thermal energy of the laser beam. Parameters, such as dimensional and shape accuracy, roughness of printed surfaces or tensile strength of printed samples were examined and compared. Dimensional accuracy of the ADAM process was evaluated using ISO IT grades -determined on the basis of the reference standard. The observed accuracy of the sintering process was comparable to traditional production processes.
The product price consists from several items. Time needed for adequate control of product is one of the most significant items, which can get expensive. So it is important, how the measurement strategy (measurement plan) is prepared. Time, which is not used for control of products by 3D measurement machine, is financial loss for company. This article deals with simulation of contact measurement, as a progressive tool, for preparation and creation of measurement plans for 3D coordinate measurement machines. Furthermore, the article deals with factors, that are not taken into account by offline programming during creation of measurement plan. Those can ultimately lead to significant difference between measurement simulation and measurement performed in workspace of measurement machines or CNC machines. This difference can cause serious shortcomings in measurement plans created in offline programming modules.
The present article analyzes the specific measurement strategies (techniques) of contact measurement that are used to determine the position deviation of the threaded holes using 3D coordinate measuring system. Furthermore, there are analyzed direct and indirect (location gages) measurement techniques to determine position of the threaded holes and results of the measurements.
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