Mastercam already reads SWorks file, You dont need to download any translator. It's already in there.
File - Open - File Type - SLDPRT (Solidworks)
Look at the "Options" button before opening the file.
It will automatically create wireframe for you during import.
It may depend on the year the software was released though. An older copy of MasterCAM would likely not read a new version of solidworks.
If you are having trouble, try parasolid, step or iges files exported from solidworks.
We use parasolid at work because step files always import with circular edges made up from two arcs instead of a single circle. But we also use SurfCAM.