| 摘要 |
PURPOSE:To prevent any loading on an abrasive disk from occurring as well as to prolong the service life of this disk until replacement by attaching this reticulate abrasive disk to a face plate being driven at proper intervals via each spacer installed at some plural spots. CONSTITUTION:A truck body is shifted, while an abrasive disk 122 is reciprocated in a state of pressing this disk to a ground surface. In brief, this abrasive disk 122 advances zigzag in movement as doing its double motion on the ground surface as well as doing its reciprocating motion. During rotation of this abrasive disk 122, a duct collector is operated, and powder shaved off is inhaled in this duct collector via a hood 126. Likewise, as this abrasive disk 122 is of reticulate in form, the powder shaved off is not loaded on this disk 122 at all, so that it is inhaled in the duct collector from a clearance to be formed by a spacer 124 via the hood 126. |
