| 摘要 |
<p>PURPOSE:To simplify the structure of a shaft system, by attaching a scraper to a turning end of an arm which is arranged on the side part of a magnet chuck, being directed toward the seat surface of a workpiece, and by jetting high pressure air from a gap between the positioning plate and the seat surface. CONSTITUTION:A attaching shaft 114 is formed in its center part with a fluid passage 114a which is communicated with an air communication hole 3b in the center part of a draw bar 3a, and a high pressure fed into radial grooves 116a which are formed in the center part of a positioning plate 116, is jetted to a work seat reference surface 115a from a slight gap between backing plate 115 and the positioning plate 116. In a cleaning device 7 a turning arm 71 has a turning end attached with a sheet-like rubber scraper 715 through which an air passage 716 pierces, and after a workpiece W is removed a spindle 3 is rotated while the scraper 715 is pressed against the reference surface 115a. Simultaneously, air is jetted to the reference surface 115a which is therefore cleaned.</p> |
