A vise provided with a movable jaw device having separated approaching and clamping steps in a bending machine die configured for bending an elongated workpiece (T), said vise (4) comprising:
- a body (6) fixed on a die, the body (6) comprising i) two abreast supporting walls (8, 9), ii) a fixed jaw portion (7) projecting downward and located adjacent a groove of a die, the fixed jaw portion (7) being integral with the die, and iii) a movable jaw device (10) having a movable jaw (11), wherein the movable jaw (11) has a gripping end (22) and an opposite rear end (23),
- wherein the movable jaw (11) is approachable and removable with respect to the fixed jaw portion (7),
- wherein the movable jaw (11) moves between a closed position and an opened position with respect to the elongated workpiece (T);
- a shaft (26) transversally mounted in the rear end (23) of the movable jaw (11);
- an operation mechanism (20) mounted on an external side of one of said supporting walls (8) and connected to rotate the movable jaw device (10),
- wherein operation mechanism (20) comprises
- i) first hydraulic cylinder (19) having a first cylinder rod (18), a rack member (15) connected to the first cylinder rod (18),
- ii) a pinion (14) connected to the movable jaw (11) and engaging the rack member (15), and
- iii) a movable jaw clamping mechanism comprising a second hydraulic cylinder (28) having a second cylinder rod (27) connected with the shaft (26), the second hydraulic cylinder (28) being a) swing mounted by the second cylinder rod (27) being connected with the shaft (26), and b) transversally pivoted in the rear end (23) of the movable jaw (11);
- opposite trunnion spindles (29, 30) laterally projecting from said second hydraulic cylinder (28) and arranged as cam followers on upper edges of the supporting walls (8, 9);
- and
- first and second notches (33, 34) located respectively in the upper edge (31, 32) of each of the supporting walls (8, 9), each of the first and second notches (33, 34) positioned to receive a corresponding one of the projecting trunnion spindles (29, 30) so that an extension of the second cylinder rod (27) is locked in position, by the projecting trunnion spindles (29, 30) being in the respective first and second notches (33, 34), to keep the movable jaw (11) in the closed position.