Low friction piston actuating mechanism

The utility model relates to a low friction piston actuating mechanism. Go up the cylinder body with cylinder body down about face-to-face symmetrical arrangement, the intermediate hsg press from both sides the dress last cylinder body with down between the cylinder body, last cylinder body and lower cylinder body fastening connection an organic whole cheng, the piston sets up in the hole of intermediate hsg, is provided with piston packaging direction subassembly between piston excircle surface and the intermediate hsg hole surface, the push rod is connected at the piston center, and a compression spring sets up between piston upper surface and the internal surface of upper cylinder half, and the setting of the 2nd compression spring is at the piston lower surface under and between the cylinder body internal surface, down cylinder body fixed mounting is on the support, and the support top is equipped with the push rod jack, the push rod from last insert the support from this push rod jack downwards in, the external output that the push rod lower extreme be actuating mechanism holds. The utility model discloses the speed that produces in the time of can eliminating actuating mechanism quick adjustment is overshoot to the direction is accurate, and frictional resistance is little, makes actuating mechanism to carry out quick response to control signal, thereby reaches the accurate purpose of adjusting.