A combination grinding machine 8, wherein {HEAD ~ the workpiece support mechanism} comprises {TAIL ~ a supporting drive unit} configured to rotate a crankshaft about a journal axis to thereby revolve a plurality of crank pins around the journal axis, and 
comprises
A combination grinding machine 8 , wherein { HEAD ~ the workpiece support mechanism } comprises { TAIL ~ a supporting drive unit } configured to rotate a crankshaft about a journal axis to thereby revolve a plurality of crank pins around the journal axis , and
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH