| 摘要 |
An aerostatic device for ultra precision machine tools, the aerostatic device having a damping device for use at any angle, including vertical, and comprising a male part (14) having a projecting portion (16), a female part (10) having a channel (12) in which the projecting portion (16) of the male part (14) is slidably receivable, means (22) for providing a magnetic field, the magnetic field means being at or adjacent to the projecting portion (16) of the male part (14) and/or the channel (12) of the female part (10), and magnetic oil (26) interposed between the projecting portion (16) of the male part (14) and the channel (12) of the female part (10) and only within the magnetic field of the magnetic field means. The in use magnetic oil (26) being retained in or substantially in position by the magnetic field, so that undesirable movement of the male part (14) and/or female part (10) is damped by the oil (26) without the oil (26) being displaced from the projecting portion (16) and/or the channel (12). |
