| 摘要 |
A gripper(5) has a free end for attaching to a puller and a gripping end with tongues(6) forming part of a hollow cylinder and able to bend radially inwards or outwards. The cylinder inner diameter equals the screw tip diameter and the cylinder outer diameter is smaller than the cylinder bore. Radially inward facing thick areas(7) at the free end of the tongues are thinner than the difference between the barrel(1) and screw tip(2) radii and are shorter than the tip undercut(3). |
