摘要:
A system to automate distribution of materials and tooling to production machines, where a very simple cross-section track, such as a circle or an X, is anchored to the equipment and to load/unload stations for materials and tooling, and where simple one or two wheeled robotic cars, where the wheels need not be mounted with yaw pivots to the cars, transport the materials or tooling. A control system keeps controls the motor or motors that drive one or two wheels to minimize pitch of the cars as they move along the track.
摘要:
A novel automatically submersible and refloatable underwater tubular pipe platform geometric structure adapted for deployment in underwater target monitoring systems and the like, wherein the floating upon the surface of the water enables flooding of the pipe structure and its submergence, and the introduction of compressed air drives the water out of the pipe platform structure to enable its automatic re-floating.
摘要:
Convective heat transfer enhancement features are formed in trays for carrying and thermally conditioning semiconductor devices or on integrated circuit chip packages. Upward extending ribs, perpendicular to a fluid flow, are formed in the trays and/or packages for increasing the mixing of the fluid flow near the devices under test, thereby enhancing convective heat transfer to or from the devices. Downward extending ribs are also formed in the trays and/or packages. The upward and downward extending ribs formed in the trays are in a staggered relationship for facilitating the stacking of trays. Alternatively, a surface roughness is applied to the trays and/or packages. The surface roughness applied to the packages is such that sufficient smooth regions remain on the packages for allowing pick-and-place machines to handle the packages.
摘要:
A modular hydrostatic bearing for use in precision machine tools and the like, where a load is supported by bolting it to modular bearing carriages or trucks which ride on parallel bearing rails, where the carriages or trucks are kept from making physical contact with the bearing rails by hydrostatic bearing pockets formed in the carriages, and where the bearing rail has two sides and two or more surfaces per side that form load carrying surfaces that the hydrostatic bearing pockets run against, and where the bearing rail load carrying surfaces have precision smooth continuous curves between them, such that the carriage can be formed with a mating surface containing the hydrostatic bearing pockets and also have smooth continuous surfaces between the hydrostatic bearing pockets, such that the carriage can be fitted over the rail with clearance suitable for hydrostatic bearing operation, but greatly reduced leakage flow because there is no direct leakage flow to the atmosphere from between sets of adjacent load carrying hydrostatic bearing pockets; and wherein the special curved profiles of the rails create surfaces with which carriages' hydrostatic bearing pockets react to support a load, and in which the rails also have special contours that create surface self compensating resistance paths directly between the pressure supply grooves and the load-bearing hydrostatic pockets, and in which the special compensation contours are oriented at an angle to the leakage paths from the hydrostatic pockets to the drains, thereby causing flow to the hydrostatic pockets inversely proportional in relation to the amount of bearing gap closure between the pockets and the rail.
摘要:
A manipulator for a test head connected to automatic test equipment through a heavy, inflexible cable. The manipulator includes a telescoping column assembly to which is mounted a vertical member. A cradle holding the test head is mounted to the vertical member. The cable is clamped at the vertical member to reduce the amount of force exerted by the cable on the test head. The cradle includes movable members to allow fine positioning of the test head, while maintaining the test head isolated from cable force. Course motion of the test head may be made by moving portions of the manipulator on the opposite side of the cable clamp from the test head. Precise positioning of the test head relative to a handling device is accomplished through a positioning mechanism at the interface between the test head and the handling device. To allow the positioning mechanism to operate, the manipulator has compliance which allows the test head to be forced into position by the positioning mechanism.
摘要:
A ball grid array package for integrated circuit chips that is designed to facilitate testing. The balls are planarized with high precision to make electrical contact more accurate for testing. Contact, even on fine pitched arrays, can be readily made. A machine for planarizing the solder balls is disclosed. Also, a contact array, as well as a method of making the contact array are disclosed.
摘要:
A system and technique for holding down and restraining a roll-off container in place as it is winched into its final position on the bed of a truck or other transport device, wherein, as the roll-off container is winched into position on the truck, a protuberance on the side of the bottom rail of the roll-off container slides into a mating interlocking cradle attached to the truck. The sliding mate can be of a cantilevered spear into a socket, or more generically, a sliding open-ended mate such as a dovetail. In the event of a crash or sudden stop, the roll-off container will thus be retained by the interlocking connection.
摘要:
A system for achieving a high degree of damping in beams and structures made from beam-type elements such as machine tools and automation equipment, although the invention can apply to any type of structure which requires damping and/or temperature control. The invention is also concerned with utilization of the same structure to obtain a high degree of temperature control in some cases. A high degree of damping is obtained by making the beam hollow and inserting one or more structural members inside the beam along its approximate length, and then filling the annulus between the axial internal members and the external surrounding structure with a viscoelastic energy absorbing material such that the inner structures and the outer structure are fully linked in shear by the viscoelastic material so that any bending in the beams results in relative shear displacement between the beams which shears the viscoelastic material and thereby dissipates vibration energy. To be effective, the internal structural members must be carefully sized so that their cross sectional area is a substantial portion of the cross sectional area of the outer surrounding structure, and the internal structural members' neutral axes should be located as far as possible away from the surrounding structure's neutral axis. Furthermore, when the internal members are configured as tubes, temperature-controlled fluid (e.g., water) can be circulated through the tubes and used to control the temperature of the structure.
摘要:
A multi-stage telescoping tube structure and a robot including a multi-stage telescoping tube structure. The multi-stage telescoping tube structure includes an outer tube, an intermediate tube, and an inner tube. The intermediate tube is slidably received in the outer tube, and the inner tube is slidably received in the intermediate tube. It further includes a multi-stage screw for arrangement translating rotary motion into linear movement of the tubes, and a drive means coupled to the screw arrangement. The robot further includes a support bracket, rotatably supporting the multi-stage telescoping tube structure, and an electric motor for rotating the arrangement. The structure further includes rail guides engagable with complimentary horizontally extending rails for horizontal movement of the robot.
摘要:
A novel flexural kinematic fluid or electrical coupling in which a pair of components is deterministically kinematically coupled with repeatable accuracy of positioning with respect to one another by the use of three spherical surfaces on one component, and three grooves in the other component, and with holes passing through one component through the contact zones between the spherical surface-to-groove contact points and out through the other component. For electrical contact, instead of fluid flow holes at the Hertzian interface, electrical contact pads are used.