| 摘要 |
PURPOSE:To prevent scattering of dust to the circumference by absorbing and collecting the dust in a scattering preventive cover at a specified point by setting the scattering preventive cover surrounding a wire brush on the outside of the wire brush. CONSTITUTION:The head end of a guide bar 3 is installed in a center hole of a bolt, and when a regulation knob 14 is rotated, a wire brush 7 moves outward or inward by work of cams 4, 5. Following this movement of the wire brush 7 outward or inward, the wire brush 7 abuts the threaded part of the bolt. Thereafter, when the wire brush 7 is rotated by compressed air, rust of the threaded part, etc., is removed, and the brush 7 moves while polishing the screw part along a pitch of the threaded part. At this time, powder/grains, etc., in a scattering preventive cover 16 surrounding this wire brush 7 are absorbed through a nozzle hole 18 and are collected at a specified point through a vent whole 17. |
