| 摘要 |
PURPOSE:To reduce a noise due to vibration of a scale by fastening a scale body formed with a toothed part in a linear pulse motor on an equipment body through an elastic material having small spring constant, and moving the primary side. CONSTITUTION:Wheels 12-15 are rotatably provided at shafts 10, 11 at cores 2, 3 on the back surfaces of which permanent magnets 6, 7 are respectively arranged, coils 9a-9d are respectively wound on poles 2a, 2b, 3a, 3b formed with toothed parts which are displaced by 1/4 from each other to form the primary side. The secondary side is formed of a scale 16 having a toothed part 16a of a constant pitch, a spring constant is sufficiently reduced, the secondary side is fastened to an equipment body 17 through springs 19a, 19b having reduced vibration transmission rate, and the primary side is moved. Accordingly, the vibration of the scale 16 occurred during the operation is not transmitted to the body 17, and the vibration and noise produced from the body 17 can be reduced. |
