UG:Modeling ME 250:Design Manufacturing I School of Mechanical Engineering Shanghai Jiao Tong University 1
Shanghai Jiao Tong University 1 UG: Modeling ME 250: Design & Manufacturing I School of Mechanical Engineering
Outline Design Feature Datum Features ■Feature Operation ■ Summary Shanghai Jiao Tong University 2
Shanghai Jiao Tong University 2 Outline n Design Feature n Datum Features n Feature Operation n Summary
Design Feature Design Feature is the detail feature that automatically unite or subtract from a solid body.Because they use relative positioning,they provide greater flexibility than primitives. Shanghai Jiao Tong University 3
Shanghai Jiao Tong University 3 Design Feature n Design Feature is the detail feature that automatically unite or subtract from a solid body. Because they use relative positioning, they provide greater flexibility than primitives
Planer Placement Face All design features,with exception of groove,require a planar placement face. -The planar placement face is a flat surface on which to place the design feature. Shanghai Jiao Tong University 4
Shanghai Jiao Tong University 4 Planer Placement Face n All design features, with exception of groove, require a planar placement face. n The planar placement face is a flat surface on which to place the design feature
Horizontal Reference The horizontal reference defines the XC or length direction for a non-cylindrical feature Unigraphics requires horizontal and vertical directions which are independent of the WCS, on the planar placement face. A horizontal reference can be any solid edge, endpoint,datum axis or datum plane that defines a vector parallel to the planar placement face. Shanghai Jiao Tong University 5
Shanghai Jiao Tong University 5 Horizontal Reference n The horizontal reference defines the XC or length direction for a non-cylindrical feature . n Unigraphics requires horizontal and vertical directions which are independent of the WCS, on the planar placement face. n A horizontal reference can be any solid edge, endpoint, datum axis or datum plane that defines a vector parallel to the planar placement face