| 摘要 |
PURPOSE:To generate a wide range of thrust and simplify construction by a method wherein in case of a rotary advance of tool, a pneumatic quick traverse through a cylinder piston is adopted when requiring no thrust, while a ball screw system is adopted when cutting thrust is required. CONSTITUTION:The revolution of a motor 111, which is driven releasing a clutch, is transmitted to a tool through a belt 114, spline sleeve 105. When the compressed air is furnished to the rear chamber air charging port C of a double-acting pneumatic cylinder consisting of the body 101 and the quill, the main shaft 103 and the tool 104 advance to a cutting starting position with a rapid traverse. When the compressed air is cut and the clutch 108 is set ON, the quill 102 advances with a slow traverse by the function of a ball screw 106 and a nut 107 revolving the tool 104 for performing a prescribed process. When the clutch 108 is again released and the air is furnished to the front chamber air charging port D, the tool 104 goes back with a quick traverse. |
