摘要:
An improved squeeze bearing apparatus exhibits torsional stiffness or rotational restraint since its rod-like bearing member (22) and its sleeve-like bearing member (28) comprise non-circular perimeters (26,32).
摘要:
A piezoelectric ultrasonic suspension in gas for creating a contactless bearing support of a precision instrument and specifically an electromagnetic motor. A gas micro-film of elevated pressure is formed between the adjoining surfaces of a spherical saddle and a spherical trunnion. The spherical trunnion is spaced apart from the spherical surface of a saddle by a gas micro-film when the piezoresonator is excited.
摘要:
An ultrastiff precision sonic bearing assembly and method thereof for controlling an effective coefficient of friction between two elements in slidable contact configured along an interface under a force sufficient to maintain contact and having static friction therebetween, by inducing a repetitive motion in one of the elements parallel to the interface thereby altering the effective coefficient of friction therebetween. The bearing assembly also provides for additional and independent electronic control over the average thickness thereof and senses the force thereon to allow the bearing assembly stiffness to be altered.
摘要:
A dynamic pressure bearing is provided with a moving side bearing member and a fixed side bearing member so as to support a rotor for rotation by generating a fluid dynamic pressure between the moving side bearing member and the fixed side bearing member. The dynamic pressure bearing includes a high-frequency exciting device for applying a high-frequency vibration to the fixed side bearing member at the time of at least one of start-up and shutdown of the rotor. In this way, both bearing members are kept almost free from contact with each other and a frictional resistance at start-up and/or shutdown is minimized.
摘要:
A hydraulic thrust bearing having bearing members with horizontally aligned, spaced bearing surfaces and a liquid completely filling the space between the surfaces. One member is oscillated normal to the bearing surfaces to generate a positive load supporting force in the bearing.
摘要:
An object levitating apparatus, an object transporting apparatus equipped with said object levitating apparatus, and an object levitating bearing as well as an object levitating process and object transporting process are described which, simultaneous to not placing restrictions on the material and so forth of the objects handled, are able to handle objects having relatively large weights and dimensions, while also being compact in size, inexpensive, preferable in terms of safety and so forth, and easy to control. The above effects are obtained by exciting a vibrator and levitating, transporting or bearing an object above the surface of the vibrator by the radiation pressure of the sound waves of the vibrator.