276 results about "Bearing design" patented technology

The present invention provides gas discharge laser systems capable of reliable long-term operation in a production line capacity at repetition rates in the range of 6,000 to 10,0000 pulses power second. Preferred embodiments are configured as KrF, ArF and F₂ lasers used for light sources for integrated circuit lithography. Improvements include a modified high voltage power supply capable for charging an initial capacitor of a magnetic compression pulse power system to precise target voltages 6,000 to 10,0000 times per second and a feedback control for monitoring pulse energy and determining the target voltages on a pulse-by-pulse basis. Several techniques are disclosed for removing discharge created debris from the discharge region between the laser electrodes during the intervals between discharges. In one embodiment the width of the discharge region is reduced from about 3 mm to about 1 mm so that a gas circulation system designed for 4,000 Hz operation could be utilized for 10,000 Hz operation. In other embodiments the gas flow between the electrodes is increased sufficiently to permit 10,000 Hz operation with a discharge region width of 3 mm. To provide these substantial increased gas flow rates, Applicants have disclosed preferred embodiments utilize tangential forms of the prior art but with improved and more powerful motors and novel bearing designs. New bearing designs include both ceramic bearings and magnetic bearings. In other embodiments, some or all of the gas circulation power is provided with a blower located outside the laser chamber. The outside blower can be located in the laser cabinet or in separate location.

The invention discloses a bidirectional double-punching can body drawing machine. The machine is characterized in that: in a structural design, two same sets of punching rod driving mechanisms are used to form a bidirectional double-punching structural pop can body drawing machine by using a crankshaft designing scheme commonly. By the scheme, the two sets of punching rod driving mechanisms are symmetrically arranged after sharing one crankshaft, so that the inertial force of an oscillating rod, a sliding block, a punching rod and other parts in the moving process and the reverse action force of the parts in the can body molding process can be balanced; therefore, the load of a crankshaft supporting bearing is obviously reduced, the designing and processing requirements of the bearing are reduced, and the service life of the drawing machine is prolonged; in addition, the yield of two conventional can body drawing machines can be realized by one bidirectional double-punching can body drawing machine; and compared with the two conventional can body drawing machines, the bidirectional double-punching can body drawing machine has the advantages that the manufacturing cost is saved, and the energy consumption is reduced.

A shaft extension for attachment to a crankshaft of an electric motor driven air compressor to axially extend the crankshaft for engagement with an outboard rotational bearing. The electric motor driven air compressor includes a bearing plate, an inboard rotational bearing mounted on the bearing plate, the crankshaft projecting through both of the inboard rotational bearing and the bearing plate and terminating in a distal end disposed exterior of the bearing plate. The air compressor also includes an electric motor, the electric motor having a stator frame, a stator fixedly mounted within the stator frame, and a rotor fixedly mounted to the crankshaft for rotation therewith and disposed interior of the stator. The air compressor further includes the outboard rotational bearing disposed axially outboard of the stator frame, the stator, and the rotor. The shaft extension includes an extension member having an extended major axis and a minor axis extending substantially transverse to the extended major axis and a connection mechanism for connecting the extension member to the distal end of the crankshaft.

The invention discloses a dynamic monitoring system for an operating condition of a thrust bearing of a hydro-generator. The system comprises a temperature sensor, a pressure sensor, an oil film thickness sensor, a host machine and a remote computer, wherein the sensor is arranged on a mirror plate of the thrust bearing for outputting lubricating parameter data such as oil film thickness, oil film pressure, oil film temperature and the like with the rotation of the mirror plate; and the data can be used for reflecting the operating condition of the thrust bearing. Data is exchanged between the remote computer and the system host machine by using wi-fi wireless communication; the host machine is used for carrying out high-speed acquisition under the control of programs; the acquired data is uploaded to the computer by the wi-fi network for displaying, storing and analyzing in the remote computer; if the thickness of the oil film of a thrust pad is excessively small or the temperature increase is excessively quick, alarm prompting is carried out to avoid a pad burning accident, thereby ensuring the safe operation of the thrust bearing of the hydro-generator. The data can be used for optimizing the design of the thrust bearing of the hydro-generator, and can be used as the original data of the expert thrust bearing analysis system.

The present invention relates to a self-adapting mixed gas radial journal bearing using an integral silk net damper. The self-adapting mixed gas radial journal bearing (10) comprises a self-adapting mixed bearing pad (12) with a fluid static force convex part (22) and a capillary throttleer (28) for providing pressurized gas flow to the self-adapting mixed gas radial journal bearing (10).The self-adapting mixed gas radial journal bearing (10) also comprises an inner ring (32), an outer ring (34) and a damper bridge (36).Each side of the damper bridge (36) forms a damper cavity (42).the integral silk net damper (62) is located in the damper cavity (42).Integral pair middle springs (46,48) are between the inner ring and the outer ring (32,34) to conveniently provide radial and turning self adaption to the self-adapting mixed bearing pad (12).A bearing design without oil solves the properties of low dumping and low loading ability in the existing self-adapting air chaff bearing design, and meanwhile, the self adaption for the geometry changes of rotors is reserved.

An improved magnetic drive pump is disclosed with improved bearing support for the proximal and distal ends of the rotor shaft. Further, an improved mechanism to couple the inner magnet assembly to the rotor shaft is also disclosed. Finally a mechanism for sealing the pump chamber from the interior of the canister that surrounds the inner magnet assembly is disclosed which permits a separate supply of coolant to be used for cooling the inner magnet assembly and the proximal end of the rotor shaft wherein such a coolant is not the fluid being pumped in the pump chamber. The pump chamber is isolated from the interior of the canister.

The device is a precision motion right angle drive for use with linear and rotary stages which employs a combination of globoid worm and small diameter star gear. Coaxial with the star gear, on the same shaft, is a spur gear which drives the rotary stage gear or a linear rack. The thin star gear achieves meshing accuracy with the globoid worm permitting a large tooth angle for direct preloading without jamming. This gear combination eliminates backlash, allows a low gear ratio for low globoid worm speed, and enables the use of an ordinary spur gear to engage the stage gear without backdrive or backlash. Further, it allows for gear contact area to compensate for the thinness of the star gear. An embodiment including an integrated bearing rotary stage permits flexibility of application and avoidance of need for custom bearing designs by achieving high motion precision at low cost.

The invention discloses a design method of a water lubrication step tile dynamic pressure thrust bearing. The design method comprises the following steps of (1) determining an inner diameter and an outer diameter of the thrust bearing according to an operating working condition and an installing size of the thrust bearing; (2) determining the number of thrust tiles according to the inner diameter and the outer diameter of the thrust bearing; (3) determining the shape and the size of a water tank; (4) determining positions and sizes of steps on the surfaces of the thrust tiles; and (5) determining the position of a water inlet. According to the method, aiming at the blank of a water lubrication bearing design, by researching a lubrication model of a common-size step tile dynamic pressure thrust bearing under the water lubrication working condition, and analyzing the influence on the bearing capacity of the bearing and the rigidity of a water film caused by the structure size and the operation working condition of the step tile thrust bearing, the most optimized design method is obtained, the water lubrication bearings with same sizes bear large load and are long in service life.

This invention obviates the need for an end roller in the traditional gear bearing design without giving up the desired bearing functions. The preferred embodiment of the partial gear bearing of the invention includes an upper half, comprising peak partial teeth, and a lower, or bottom, half, comprising valley partial teeth. The upper half also has an integrated roller section between each of the peak partial teeth with a radius equal to the gear pitch radius of the radially outwardly extending peak partial teeth. Conversely, the lower half has an integrated roller section between each of the valley half teeth with a radius also equal to the gear pitch radius of the peak partial teeth. The valley partial teeth extend radially inwardly from its roller section. The peak and valley partial teeth are exactly out of phase with each other, as are the roller sections of the upper and lower halves. Essentially, the end roller bearing of the typical gear bearing has been integrated into the normal gear tooth pattern.

The invention provides a novel energy-saving radial sliding bearing, which is formed by matching a shaft and a bearing sleeve hole or bearing block hole. A bearing sleeve hole wall or bearing block hole wall at an inlet region of a convergent wedge-shaped pore of the bearing is coated by a thin layer material, and the surface-treated bearing sleeve hole wall or bearing block hole wall is paired with the shaft; a gap formed between the bearing sleeve hole wall or bearing block hole wall and the shaft is filled with lubricating oil. The novel energy-saving radial sliding bearing designed by adopting an interface slip technology and adopting a surface coating method has the advantages of great carrying capacity, low coefficient of friction and excellent energy-saving performance. Compared with the traditional interface-slip-free radial sliding bearing, the bearing provided by the invention has the advantages of obviously improved carrying capacity, and obviously improved antifriction and energy-saving performances, thus having an important application value.

A slider for carrying transducers for a data storage device including a stiction control trench. The stiction control trench includes a boundary dimension to reduce creep or interference of the pressurized profile of the raised bearing surface to provide stiction control while limiting interference with the hydrodynamic bearing design.

A slider for a disk drive has an air bearing surface that opposes a rotatable disk of recordable media. The air bearing surface includes one or more interior cavities to reduce van der Waals and electrostatic forces that attract the slider to the disk.

A hydraulic axial piston pump is designed with a secondary swashplate angle for providing improved performance and life. The secondary swashplate angle produces a sideload on the swashplate that is reacted by the pump's housing. A hydrostatically balanced thrust bearing is used to counteract the sideload produced by the secondary swashplate angle. The bearing design includes a tiltable pad or shoe supplied with pressurized fluid from the pump's discharge port. The same fluid that supplies the tiltable pad may also supply the pump's cradle bearings.