| 摘要 |
<p>Disclosed is a ball bearing high-speed electric main shaft for milling, comprising an upper bearing seat assembly (5), an upper bearing assembly (6) being fixed via an upper bearing lock nut (17) in a through-hole within the upper bearing seat assembly (5), wherein the front end of a step of the upper bearing seat assembly (5) is fixed to the rear end of a machine body assembly (9), and the front end of a lower bearing assembly (10) is fixed to a lower bearing pressure ring (16) by a lower bearing lock nut (15), and the rear end of a spindle main body of a spindle assembly (7) is fixed to an encoder (18) detecting the rotational speed. The rotational speed of the electric main shaft is adjustable and when operating at a high rotational speed, the main shaft has high accuracy, adequate axial and radial rigidity, and a long service life.</p> |
