| 摘要 |
PURPOSE:To shorten the time for mounting and removing at the time of replacement of guide shoe and enhance the working effectiveness by omitting use of any bolt fastening for a guide shoe. CONSTITUTION:A ball plunger 9 is installed in a hollow guide 7 at its foremost part, and a circumferential groove 10 to be engaged by balls of the ball plunger is provided at the periphery of a guide shoe 6 to be mounted at this foremost of the hollow guide, and thereby the mounting is generated through engagement. |
