| 摘要 |
PURPOSE:To obtain a small-sized captioned device of light weight by moving a grindstone along an abrased face as forming a magnetic circuit between the grindstone and the abrased material for eliminating the inertia and the reaction as well as the generation of frictional vibrations and keeping the abrasion pressure constant. CONSTITUTION:A sleeve 9 made of a material of a small friction coefficient is fitted between a connected body and a lower connected body, and on the periphery of the sleeve 9, a coil 5 is wound for inserting an iron core 4 axially to be movable, while a grindstone 2 is connected at the lower end of the iron core 4 to be turned around the axis. A holder is constructed of the connected body 6, the lower connected body 7, and the connection member 16, and this holder is connected with an arm 12. A screw shaft 14 is screwed through in a slide 13 at the rear part of the arm 12, and connected to a reversible motor 15. When the screw shaft 14 is regularly or reversely rotated by the motor 15, the slide 13 is given a reciprocating movement to move the grindstone 2 along an abrased face 11 via the arm 12 and a holder 8, and current is sent to the coil to give an abrasive pressure. |
