Machine for the nucleation of fatigue pre cracks in specimens

摘要

"Machine for the nucleation of fatigue pre cracks in the bodies of evidence".Understood basically by the rectangular support plate (2) sustained by screws (1), on which are supported on the supporting walls (5) which is fixed to the plate (2) by screws (3).With that said walls (5) have a hole for passage of the shaft (19), anchored by bearings (18), whose end is provided with the flange (20) fixed by a bolt (24).The coupling (21) and a flange (22) of the engine, fixed by the screw (23), said axle (19) is provided at its middle portion between the walls (5) of the rings (4) and (16) secured by bolts (17).But on said ring (17) is provided with the bearing (15), said machine when mounted to the nucleation of bodies of evidence of type (b) is a support pin (13).It glides through the bushing (14), fixed to the upper plate (6), which is attached to the walls (5) by bolts support (7), which anchor the upper bonnet (9), locked by nuts (8),And in said upper bonnet (9) are attached, by means of the screws (12), the belt (10) of the 't' (11) which, in turn, set the body of evidence type (b).For the bodies of evidence of type C (T), the machine is composed of rectangular plate support (2) sustained by screws (1),On which are supported on the supporting walls (5) which is fixed to the plate (2) by screws (3), and said walls (5) have a hole for passage of the shaft (19),Anchored by the bearings (18), whose end is provided with the flange (20) fixed by the screw (24), the coupling (21) and a flange (22) of the engine.Fixed by the screw (23), said axle (19) is provided at its middle portion between the walls (5) of the rings (4) and (16) secured by bolts (17).But on said ring (17) is provided with the bearing (15), so that the machine when mounted to the nucleation of bodies of evidence of type C (T),Serves to support the upper ring (30) which has a threaded hole for fixing the screw (29) of the fixing claw (26) that holds one end of the body of evidence; on the walls of sustentau00e7Will (5) are threaded bolts (25) to support the upper plate (27), which supports the upper screw (28).That in turn supports the upper gripper (26) that holds the other end of the body of evidence of the type C (T).