Yhu-Tin Lin

Machinability of Compacted Graphite Iron in Honing

Compacted graphite iron (CGI) has been viewed as the next generation casting material for diesel engines to further the automotive energy efficiency because of its better mechanical strength for lighter engine designs as compared to gray cast iron. The machinability of CGI is analyzed and tested in honing, a standard engine manufacturing process for cylinder bores. Its comparable stock removal rate and tool life to cast iron honing lessen the concern of the machinability problems normally seen in other machining operations on CGI parts.Copyright

Production Validation of Agile Machining Fixture: A Machine-Automated Reconfigurable Tooling

Agile machining fixture is a machine-automated reconfigurable tooling first introduced in 2003. The fixture is reconfigurable and programmable on a CNC machine. To evaluate its viability in production, the agile machining fixture is reconfigured from one machining operation to another for showing its flexibility to processing needs. The fixture is further tested and validated in a low volume production environment to address various challenges in product designs, machine conditions and process details. The good dimensional quality of the production parts machined in this study confirms that the agile machining fixture can perform as well as conventional ones on a regular CNC machine and thus deserves the consideration for future production implementation.Copyright