Hydraulic press used for performing deep-drawing press and fine cutting works, includes cylinder piston unit that sets setting stroke, and another cylinder piston unit that sets working stroke

摘要

The hydraulic press includes a cylinder piston unit (1.7) that sets a setting stroke (31), and another cylinder piston unit (102) that sets a working stroke (30). The cylinder piston units are respectively arranged in a follower (3) and a table (2). The sum of the upper effective area (A20) and a lower effective area (A22) is larger than an intermediate effective area (A21). The contact force applied by the piston (115) to a plate (22) via a set bolt (17) can be controlled at the time of the working stroke.