If your press machine design having two upright cams then your translation is correct otherwise "upright here refers to “Straight-Side Press” - An upright press open front and back with the columns (uprights) at the ends of the bed.


For cam definitions:

Cam - A device to move or do work at an angle to the press stroke.
Cam Action - A motion at an angle to the direction of an applied force achieved by a wedge or cam.
Cam Driver - A block with one or more angular surfaces which applies force by the vertical movement of the press to mating angular surfaces on a cam slide.

See also glossary of press components

http://www.oakinternational.biz/signature/ed_center/terms/OA...

http://www.theheimgroup.com/info/glossary.asp