Desain dan Implementasi Computer Integrated Manufacturing (CIM) untuk Pabrikasi Puli dari Bahan Besi COR

Abstract

The general purpose of research reported in this thesis is to design computer integrated manufacturing and to implement it on small and medium enterprise (SME) that produce pulley made of cast iron. The research is focused to increase the productivity through the study of machinability factors (tool wear/tool life, surface finish) with various cutting speed (v), feeding (), depth of cut (a), and to compose the optimum process planning (tool path and NC program) in order to obtain the shortest machining time of tool path. The background of research is based on the fact that SME is one of important sector in Indonesian economic which amount about 42.400.000 industries and it is promising business that exist in pour economic and politic situation. However, there is no action taken to increase the productivity of SME from the momefacturing side. The effort to increase the productivity of SME due to the competency to the imported product is the implementation of CIM The CIM consist of soft and hard technology Eventhough CIM has been implemented widely in manufacturing, there is not any standard method to adopt CIM. In this research, CIM is implemented on pulley's industry. On the soft technology aspect, research which is done to the industry that produce pulley including the product design tool path design and machining process simulation. On the hard technology aspect, it was done the experiment that include the study of tool performance by wing incremental method and 2 factorial. The result of experiment show the tool performance which is used as an input to design the soft technology is the minimum cuting condition (v-300 m/min, f-0.15 mm/rad, a- 0.5 mm) and the maximum cutting condition fv-500 m/min, f-0.25 mm/rad, a- 1 mm). By variation of the cutting condition at can be obtain that machining time can be reduced between 5.82 % to 89.40 % # meant, the productivity raises up to 243 % until 943 64 6. The total cutting tool per day can be reduced 55.22 % wouil 87,37 % which is meant production coat for cuting tool can be reduced. The surface roughness (Ra) of product produced by the old technology is 4 um, while after the implementation of CIM (new technology) surface roghness as low as 1 86 pm to 273 um By this fact the quality of prohet proce by new technology is much bener than old technology, more over the accuracy and the precision of product by the new technology is also much better than the old technology In the previous technology the maximum error is about 3.17 mm and the new technology is about 0.28 mm