67results about How to "Accurate rotation positioning" patented technology

The inventions described in this patent application include i) a torqueable introducer sheath which is useable in conjunction with a transvascular passageway forming catheter to effect precise rotational control of the catheter; ii) an anchorable guide catheter which is useable in conjunction with an intravascular imaging catheter and a transvascular passageway-forming catheter to effect precise positioning and aiming of the passageway-forming catheter; iii) a passageway forming catheter having a torqueable proximal portion to facilitate precise rotational positioning of the distal portion of the catheter; iv) a deflectable-tipped passageway forming catheter, v) various markers and other apparatus useable in conjunction with any of the passageway-forming catheters to facilitate precise positioning and aiming of the catheter, and vi) an apparatus which may be formed within a catheter to prevent a member, apparatus of flow of material from being inadvertently advanced through a lumen of the catheter.

A surgical retractor includes a pair of parallel arms that are mounted to a toothed crossbar. One of the arms is fixed to one end of the crossbar, while the other arm is movable along the crossbar by means of a pinion. One or both of the arms includes on its upper surface a bar having a longitudinally extending flat surface. A rod is connected to the bar by means of a bracket. The bracket can be locked in position relative to the bar by a first set screw that engages the flat surface. A rod extends through an opening in the bracket and is retained in place there by a second set screw. The rod includes a circumferentially extending shoulder that engages the bracket so as to locate the rod in a desired position. One or more flat surfaces are formed on the rod adjacent the shoulder for engagement by the second set screw. One of the flat surfaces causes the rod to be positioned precisely as necessary to perform a surgical procedure, while the other of the flat surfaces enables the rod to be moved to an out-of-the way position and locked in place there. One or more retractor blades of the wire basket type are connected to the rod by means of universal clamps. The basket portions of the retractor blades are made of a malleable wire that enables the configuration of the blades to be changed by the surgeon as desired.

A training device properly develops a sports equipment swing, particularly for golf equipment, to counter an overpowered back-swing that results in an uncontrolled out-of-plane downswing. The device may comprise a strap having one end secured to a latch plate, and the other end securable to a latch that releasably receives a portion of the latch plate. At least one bungee cord may have one end attached to the strap at a position relative to the latch, being approximately 4-12 inches displaced therefrom. The other bungee cord end may have a cinching device located thereon to adjustably secure the bungee cord therein to engage a golf club shaft or shaft of a sports racquet, bat or stick. The bungee cord may comprise first and second cord portions being joined together, where the first cord portion has a low elastic modulus, and the second cord portion a high elastic modulus.

The invention provides a weighing test instrument device and a manufacturing method thereof. The weighing test instrument device comprises a feeding unit, a weighing sorting unit, a discharging unit and a control unit. The control unit controls the feeding unit to deliver to-be-weighed materials to overturning balances of the weighing sorting unit separately; the overturning balances weigh the materials separately and feed weighing data back to the control unit; and the control unit controls a rotary table to rotate to the positions above target material receiving cases according to sorting standards, the overturning balances are overturned, and weighed and sorted materials are placed into the target material receiving cases separately. By adoption of the weighing test instrument device and the manufacturing method thereof, the technical problems that when an existing weighing test instrument device is used for weighting, testing and sorting batch materials, time and labor are wasted, and much manpower is needed for sorting out the materials are solved, and accordingly, the technical effects that the batch materials are automatically fed separately, rapidly weighed, precisely sorted and discharged in a batched mode in time through the weighing test instrument device are achieved.

The invention discloses a box pasting and folding machine with automatic paper correcting and window pasting functions. The box pasting and folding machine comprises a machine frame, a paper rolling shaft, a glue barrel and a paper cutter. The glue barrel can slide up and down in the vertical direction of the machine frame, detachable glue distributing wheels are arranged in the glue barrel, and pawls abut against the outer contour faces of the glue distributing wheels. A shell type moving bar is arranged on the part, located in front of the glue barrel, of the machine frame, and at least a row of outer air suction holes communicated with a shell cavity is formed in the outer wall of the moving bar in the axial direction. An air suction barrel is arranged in the moving bar shell cavity in sealed and sliding modes, and an extraction hole communicated with an inner cavity of the air suction barrel is formed in the shaft body of an extending section and communicated with an air extractor. A row of inner air suction holes is formed in the wall of the air suction barrel. A sliding frame is arranged on a sliding rail in a sliding mode. A sliding table is connected to a fixed guide rail in a sliding mode, a movable holding plate and a fixed holding plate are arranged on the sliding table in parallel, and a pair of paper conveying press rollers is correspondingly arranged behind the paper cutter. According to the box pasting and folding machine, ground paper can be quickly corrected, the glue distributing amount is sufficient, glue lines are uniform, and the box pasting quality is good.

A dynamic aperture device includes a motor, a light shielding element and a balancer. The motor has a shaft. The light shielding element has a light shielding portion and a hub connected to the light shielding portion. The hub is coupled to the shaft. The balancer is disposed on the light shielding element, the hub or the shaft.

The present invention relates to an actuation device for the actuating of an adjustment surface of an aircraft such as an elevator, a rudder or the like, of landing gear or another aircraft or surface vehicle actuator, comprising an electrohydraulic actuator having a servo control cylinder, a pump for pressure fluid action on the servo control cylinder as well as an electric motor for the actuation of the pump, with the electric motor having a liquid cooling. In accordance with the invention, the actuation device is characterized in that a leak flow of the pump is guided over a leak passage through the electric motor to cool the electric motor.

An electric turbo compressor is an air compressor to be used in a fuel cell system, and includes a housing comprised of a compression casing, a motor casing, and a canceller casing, and the housing houses therein an impeller, a rotary shaft, a thrust canceller (a load cancellation section), and a motor unit. The rotary shaft is supported by a thrust air bearing in its thrust direction, and is axially supported by a radial air bearing in its rotating direction. A thrust load is generated at the rotary shaft when the number of rotations of the impeller increases. The pressure of the compressed air acts to the pressure chamber from the compressed air lead-out section of the compression casing via the compressed air passage, and this pressure acts on the canceller flange of the canceller shaft so as to generate a load towards the rear of the rotary shaft. Therefore, the thrust load is cancelled out.

The invention relates to an integral type multifunctional locating transmission mechanism which comprises a support shell with an output shaft, a shaft worm and a hollow worm, wherein a level transmission mechanism and a vertical transmission mechanism are both arranged in the support shell, and a vertical transmission worm connected with the output shaft penetrates out of the outer support shell; and the shaft worm and the hollow worm are mutually plugged, the shaft worm is connected with the hollow worm through a power locking outside the hollow worm, the two ends of the vertical transmission worm and the support shell are respectively provided with a bearing, one side of each bearing is provide with an interval adjusting nut, and the interval adjusting nut is in thread connection with the support shell. The transmission mechanism provided by the invention has the advantages that the defect of the complex axial interval adjustment in the prior art is overcome, the level transmission part and the vertical transmission part are arranged in the support shell, thereby realizing the omnibearing 360 degrees accurate rotate locating; the structure is compact, the anti-upsetting moment is strong, the transmission ratio is large, the return difference is low, the transmission interval adjustment is convenient, and the service life is long.

The invention discloses a rotary and rapid positioning device. The rotary and rapid positioning device is characterized by comprising a positioning central spindle, wherein the positioning central spindle is arranged in the center of a base and sleeved with a rotary ring, a small ring gear of the rotary ring is in contact connection with a lower pressing circle through a roller needle bearing, a large ring gear of the rotary ring is in contact connection with a roller needle, the roller needle is connected with a supporting block on the base, a positioning ring gear is arranged on the outer side of the large ring gear of the rotary ring, the positioning ring gear is connected with the base through a hydraulic jack, and the large ring gear is matched with the positioning ring gear. The rotary and rapid positioning device has the advantages of being simple in structure, low in manufacturing cost, convenient to operate, high in production and machining efficiency and the like, and can clamp and position large-scale boring mill and drilling machine parts and rapidly and accurately position workpieces in a rotating mode. The product machining precision is determined by the number of teeth of the rotary ring. Whether an electric transmission mechanism needs to be added or not is judged according to actual use demands. The rotary and rapid positioning device has high practicability and can be brought into use in manufacturing shops on a large scale.

A measuring instrument (10) for contactless detection of an angle of rotation comprises a magnetically nonconductive rotor (11), on which a magnet (6) is disposed, and a stationary magnetically sensitive element (1) for generating a measurement signal. The magnetically sensitive element (1) has two sensitive faces (2, 3) spaced apart by a distance (x).

A rotation-position detection system according to the present invention is configured with a resolver mounted in a brushless motor and a motor controller. The motor controller outputs an excitation signal to the resolver and an A / D converter thereof alternately applies analogue / digital conversion to a sine wave signal and a cosine wave signal outputted from the resolver so that a rotation position of the motor is calculated.

A rotation-position detection system according to the present invention is configured with a resolver mounted in a brushless motor and a motor controller. The motor controller outputs an excitation signal to the resolver and an A / D converter thereof alternately applies analogue / digital conversion to a sine wave signal and a cosine wave signal outputted from the resolver so that a rotation position of the motor is calculated.

The invention discloses an electronic control system for a dust blowing and sucking equipment rotary frame. The electronic control system comprises an equipment layer, a field layer and a monitoring layer. The equipment layer comprises a speed sensor and a frequency converter, and the frequency converter is provided with an absolute value encoder. The field layer comprises a PLC. The PLC comprises a PLC master station and a PLC slave station. The PLC master station comprises an S7 315-2DP controller, a CP343-1 Ethernet communication module and a master station I / O module. The PLC slave station comprises a siemens ET200M and a slave station I / O module. The monitoring layer comprises an industrial personal computer and a touch screen. The industrial personal computer is connected with the touch screen through a data line and carries out data exchange with the CP343-1 Ethernet communication module through an industrial Ethernet. The frequency converter is connected with the S7 315-2DP controller and the siemens ET200M through a profibus. The speed sensor is connected with the master station I / O module and the slave station I / O module through shielding cables.