Screw type expansion shaft

• Main Authors: ZHENG YAOSHUN, YANG DAIHUA
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: HAND TOOLS; MANIPULATORS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING; TRANSPORTING

The utility model relates to the field of expansion shafts, in particular to a screw type expansion shaft which comprises a shaft body and a lead screw, the lead screw is inserted into the shaft body in the length direction of the shaft body in a penetrating mode, the lead screw is arranged in a sliding mode in the length direction of the shaft body, and the peripheral side of the lead screw is sleeved with an expansion block. The side, away from the lead screw, of the expansion block abuts against the expansion key on the shaft body, and the lead screw is used for driving the expansion block to expand the expansion key. According to the expansion shaft, when the cylindrical workpiece is expanded, the expansion force which is large enough can be generated, and it is effectively guaranteed that the expansion shaft expands the cylindrical workpiece. 本申请涉及胀紧轴领域，尤其是涉及一种螺杆式胀紧轴，其包括轴体和丝杆，所述丝杆沿所述轴体长度方向穿插在所述轴体内，且所述丝杆沿所述轴体长度方向滑移设置，所述丝杆周侧套设有胀紧块，所述胀紧块远离所述丝杆的一侧所述轴体上的胀键相抵接，所述丝杆用于带动所述胀紧块对胀键进行胀紧。本申请的目的是在胀紧圆筒工件时，能够产生足够大的胀紧力，以