Improvement of dimensional accuracy of 3-D printed parts using an additive/subtractive based hybrid prototyping approach
At present, two important processes, namely CNC machining and rapid prototyping (RP) are being used to create prototypes and functional products. Combining both additive and subtractive processes into a single platform would be advantageous. However, there are two important aspects need to be tak...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English English |
| Published: |
IOP Publishing
2017
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/59416/ http://irep.iium.edu.my/59416/ http://irep.iium.edu.my/59416/ http://irep.iium.edu.my/59416/7/59416-Improvement%20of%20Dimensional%20Accuracy.pdf http://irep.iium.edu.my/59416/13/59416-Improvement%20of%20Dimensional%20Accuracy%20of%203-D%20Printed%20Parts%20using%20an%20Additive-SCOPUS.pdf |
| Summary: | At present, two important processes, namely CNC machining and rapid prototyping
(RP) are being used to create prototypes and functional products. Combining both additive and
subtractive processes into a single platform would be advantageous. However, there are two
important aspects need to be taken into consideration for this process hybridization. First is the
integration of two different control systems for two processes and secondly maximizing
workpiece alignment accuracy during the changeover step. Recently we have developed a new
hybrid system which incorporates Fused Deposition Modelling (FDM) as RP Process and CNC
grinding operation as subtractive manufacturing process into a single setup. Several objects were
produced with different layer thickness for example 0.1 mm, 0.15 mm and 0.2 mm. It was
observed that pure FDM method is unable to attain desired dimensional accuracy and can be
improved by a considerable margin about 66% to 80%, if finishing operation by grinding is
carried out. It was also observed layer thickness plays a role on the dimensional accuracy and
best accuracy is achieved with the minimum layer thickness (0.1 mm). |
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