40results about How to "Symmetrical shape" patented technology

The invention belongs to the computer aided surgical technique and maxillofacial plastic medical treatment equipment field and relates to a computer simulation method for predicting soft tissue appearance change after a maxillofacial bone plastic surgery. The method comprises the following steps that: spiral CT scanning is performed on the maxillofacial of a patient before the surgery; data are led into maxillofacial surgery design simulation software, namely, CMF-pre CADS, so that a three-dimensional maxilla and skin surface model is re-constructed; a bone segment is reset / shifted to a preliminary location; and the similarity of a pre-surgery prediction model and a post-surgery true appearance is judged through comparison through Geomagic software. With the method adopted, the post-surgery appearance and stomatognathic system functions can be recovered excellently; the appearance of soft tissues are symmetrical, harmonious and beautiful; the post-surgery satisfaction degree of the patient reaches 95%; the effects of the plastic surgery are stable; and long-term satisfaction is also very high.

A bending-forging machine for manufacturing the large crankshaft or bellcrank used by ship is composed of upper die with lower arc end, bending lower die, upper and lower flat stocks, and insertion plate with lower arc end. Its forging method includes such steps as upsetting a steel ingot to become a flat square billet, drawing it to become a blank with shoulder, pressing V-shaped die on the middle of blank to form symmetric two V-shaped slots, bending by upper and lower dies, removing the upper and lower dies, inserting the insertion plate for finishing, trimming, and removing insertion plate.

The preparation method of biological material integrally-implanted ear soft bone bionic support includes the following steps: 1. preparing laminate image of reference auricle contour; 2. restructuring said image to obtain three-D entity model; 3. layering said three-D entity model to obtain two-D graph of every layer; 4. coding every layer two-D graph to obtain digital control code; 5. inputting digital control code of every layer two-D graph into quick forming machine; and 6. using the quick forming machine to make hierarchical piling and hierrarchical cutting according to the inputted digital control codes so as to obtain the invented ear soft bone support.

The invention discloses a forming mould of a carbon fiber rim. The carbon fiber rim is integrally formed by a rim body, a first wheel flange, a second wheel flange, a spoke and a wheel installing disk. The forming mould comprises an inner mould core, an upper mould, a lower mould, an inner core and at least two side moulds, wherein the inner mould core and the lower mould are locked together to form a cavity of the second wheel flange, the spoke and the wheel installing disk; at least two side moulds form a cylinder in a surrounding manner for forming the outer surface of the rim body; the lower parts of the side moulds are installed on the lower mould; the inner core for forming the inner surface of the rim body is installed inside the cylinder; the upper mould for forming the first wheel flange is installed on the upper parts of the side moulds. The invention further discloses a forming method of the carbon fiber rim. The formed carbon fiber rim is firm in structure, higher in overall strength and relatively high in precision of an assembly size, and relatively high in roundness of the rim body and flatness of the wheel installing disk.

The invention relates to a T-shaped unilateral bolt fastener. The fastener is used for fixing a connecting piece. The fastener comprises a bolt, a bolt sleeve, a large gasket and a large nut which areall sleeve the bolt; the bolt sleeve is arranged in a mounting hole; the head of the bolt, the large gasket and the large nut are arranged on two sides of the connecting piece so as to fasten and install the connecting piece. The T-shaped unilateral bolt fastener is characterized in that the bolt comprises a bolt head and a bolt rod which are connected with each other; the section of the mountinghole and the section of the bolt sleeve are the same as the section of the bolt head; and after the bolt head rotates by a set angle with the bolt rod as the axis, the sections of the rotated bolt head and the section of the bolt head at the original position are staggered. Compared with the prior art, the fastener has the advantages of easiness in mounting and high stability in fastening and thelike.

Supplemental intraluminal graft extension achieved by cuff-means substantially fortify and enhance endovascularly emplaced systems, particularly for bridging aneurysms. Multiple embodiments based upon overlapping of at least two segments are taught. Cuff-means likewise have applications to restore patency to, or substantially enhance, prior failing emplacements of both home-made and other commercial devices.

The invention belongs to the technical field of robots, and particularly relates to a symmetrical robot joint. The symmetrical robot joint comprises a base, a waist seat, a big arm, a three-axis assembly, a small arm, a wrist shaft assembly, and an end flange which are rotatably connected in sequence, wherein a five-axis driving mechanism and a six-axis driving mechanism are symmetrically arrangedin the small arm, the five-axis driving mechanism is connected with the wrist shaft assembly and used for driving the wrist shaft assembly to rotate around a fifth axis relative to the small arm, thesix-axis driving mechanism is connected with the end flange and used for driving the end flange to rotate around a sixth axis, and the sixth axis is perpendicular to the fifth axis. A precision speedreducer of the symmetrical robot joint is transferred from the six-axis axis position to the five-axis axis position, the hollow performance, the miniaturization and the flexibility of the six-axis are improved, and therefore, the transmission viscous resistance is small, the energy-saving and environment-friendly efficiency is high, the inertia is small, and the control difficulty is low.

The invention discloses a feed structure for a planar waveguide antenna. The feed structure comprises a rectangular waveguide, a multistage waveguide power division structure, a parallel-plate waveguide and a plurality of mode conversion structures, wherein the multistage waveguide power division structure is connected with the rectangular waveguide and is used for shunting an electromagnetic wavetransmitted in the rectangular waveguide; the plurality of mode conversion structures are used for connecting the multistage waveguide power division structure and the parallel-plate waveguide and are used for converting the mode of the electromagnetic wave and inputting the electromagnetic wave into the parallel-plate waveguide; and each mode conversion structure comprises a multistage stepped structure arranged on the side surface thereof, thereby reducing reflection of the electromagnetic wave. When the electromagnetic wave is transmitted into the parallel-plate waveguide from the rectangular waveguide and the multistage waveguide power division structure, conversion of the mode of the electromagnetic wave is completed through the mode conversion structures, the electromagnetic wave isconverted into a quasi transverse electromagnetic wave (TEM) mode from a TE mode, and quasi plane wave transmission is formed in the parallel-plate waveguide, so that the feed structure can be applied to a line source of a planar waveguide CTS antenna.

The invention discloses an automatic transverse control device for pulling a cable array in ocean. The device comprises a shell, an acoustic receiving transducer unit, a communication unit, a circuit unit, a driving unit, a wing plate unit, a power source unit and a locking unit. According to the device, sound wave signals are processed by the circuit unit to generate ranging signals, the ranging signals are sent to a cabin control chamber through the communication unit, after the ranging signals are analyzed by the cabin control chamber, current cable array information is compared with a target cable array information, the angle by which wing plates need to rotate is determined, through the communication unit, an angle instruction is sent to the driving unit through the circuit unit, and further the winging plates are driven to rotate to the set angle. The automatic transverse control device can be applied to the technical field of ocean oil seismic exploration. With the device, the distance between targets can be adjusted and controlled through the wing plate angle, and therefore the pulled cable array can be automatically adjusted and controlled in the transverse direction, cables are always acquired in a certain array shape, and smooth seismic acquisition work is guaranteed.

The invention discloses an electromagnetic vibration energy collecting device for an ocean robot. The device comprises a hemispherical body. Permanent magnets are distributed on the surface of the hemispherical body; the hemispherical body is positioned in a lower hemispherical housing, and sphere centers of the two are same; round holes corresponding to the permanent magnets on the surface of thehemispherical body are distributed in the lower hemispherical housing, and coil columns are inserted into the round holes; the lower hemispherical housing and an upper hemispherical housing are connected to form a complete spherical housing; a supporting column is supported in the upper hemispherical housing towards the sphere center, and the supporting column is connected with the hemisphericalbody through a TBS knuckle bearing, so that the hemispherical body can rotate in any direction around the steel ball center of the TBS knuckle bearing; the magnetic poles of the outward parts of the adjacent permanent magnets on the hemispherical body are opposite; and the winding directions of coils wound on the adjacent coil columns are opposite. Energy of external objects in all directions canbe directly collected and converted into electric energy; and the overall structure is stable, the shape is symmetrical, and the influence on external device stability is small.

A core wire holder 20 is formed with a core wire insert hole 21 having an opening part 22 on an upper surface of a main body and extending toward a lower surface side, and a silicon core wire 5 is inserted into the core wire insert hole 21. In addition, a slit-like gap part 60 extending along a virtual plane P including a central axis C of the core wire insert hole 21 is formed, and the slit-like gap part 60 is a gap part extending from the core wire insert hole 21 to reach an outer surface of the main body of the holder 20. The silicon core wire 5 inserted in the core wire insert hole 21 is fixed by fastening an upper part of the main body of the holder 20 from sides with, for example, a bolt / nut type fixing member 31.

A gymnastic robot able to simulate the gymnastic actions is composed of legs, trunk, arms, supporting frame, motor, shoulder angle sensor, horizontal bar and wrist angle sensor.

A degradable multi-element thermoplastic material used for preparing the expendable food containers contains starch, resin, plant oil, biodegradant, photodegradation promoter, ultraviolet absorbent and saponified transition metal. Said expandable food container is prepared from said components through proportional mixing, heating, extruding out shaping, cooling and punching. Its advantages are easy degradation, and no leakage and pollution.

The invention relates to a piston rod (20) for an injection device, comprising a first and a second legs (30, 40), each leg being foldable on itself and comprising a proximal region, said piston rod (20) being in one of a folded position and an unfolded position, said piston rod (20) comprising coupling means (33, 34, 35, 43, 44, 45) for coupling the proximal region (32) of the first leg to the proximal region (42) of the second leg when said piston rod (20) is in said unfolded position. The invention also relates to a kit comprising said piston rod.

The invention discloses a washing machine and an upper cover thereof. The upper cover of the washing machine comprises a cover body and a working table. A concave cleaning platform is arranged on the surface on one side of the working table. The working table can be rotatably arranged on the cover body via a pivotal shaft at 180 degrees and has a working position and a closing position. When the working table rotates at the working position, the cleaning platform is horizontally exposed. When being located at at least one of the working position and the closing position, the working table slides on the cover body forward and backward. The upper cover further comprises an ultrasonic generating device used for generating ultrasonic vibration waves. The ultrasonic generating device is mounted on the cover body and suitably used for conducting generated ultrasonic vibration into the cleaning platform such that clothes to be washed on the cleaning platform are cleaned. The upper cover of the washing machine provided by the embodiment has following advantages: clothes can be conveniently washed in the local ultrasonic manner; the upper cover is convenient in operation and neat and attractive in external appearance; and space is saved.

The invention discloses a double-friction brake drum for a winch. The double-friction brake drum comprises a drum body and friction drums, wherein the friction drums are symmetrically arranged on twosides of the drum body, the drum body is provided with a plurality of steel cable grooves for limiting steel cables, and the inner sides of the friction drums are provided with outer rings for preventing the steel cables from slipping off. The structure is simple, the assembly is reasonable, and the braking efficiency is greatly improved.

The present invention relates to a Chinese medicine preparation noise-proofing protecting covers for mounting on the ear peripheries. Said protecting covers have a pair of reflectors with the function of resisting noise and reducing noise and a pulse generator. In the interior of every reflector a medicine preparation holding device and an electric acupuncture and moxibustion electrode are added, and the Chinese medicine preparation can be contacted with epiderm of ear to make the epiderm of ear absorb efficacy of medicine under the action of temp. difference, air flow and cutaneous respiration, at the same time the electric acupuncture and moxibustion technique is adopted to continuously and regularly stimulate ear acupoints so as to attain the goal of resisting noise and reducing noise and protecting ear.

The invention relates to the technical field of metal part forming, in particular to a metal part batch bending forming machine which comprises a machining table, and a fixing guide mechanism is installed on the machining table. When the metal pipe clamp is bent, formed and machined, the metal pipe clamp is limited through the fixing guide mechanism, so that the sizes of the metal pipe clamps on the two sides of the forming groove are the same, it is ensured that the shapes of the metal pipe clamps formed through punching are symmetrical, and the situation that the sizes of the two sides of the metal pipe clamp are different in the punching process, and consequently later use cannot be achieved is prevented; and meanwhile, after the forming machining of the metal pipe clamp is completed, the part taking set only needs to pedal a pushing plate to move into a cross-shaped groove, so that a T-shaped pushing plate moves upwards to push out the formed metal pipe clamp upwards, the formed metal pipe clamp is taken out conveniently, and the formed metal pipe clamp is prevented from being clamped in a forming groove.

The invention discloses a two-stage type torque-adjusting vibration exciter. The two-stage type torque-adjusting vibration exciter structurally comprises a vibration exciter box body and torque-adjusting mechanisms which are arranged in the vibration exciter box body in a bilateral symmetry mode, wherein each torque-adjusting mechanism comprises a center shaft, static blocks, a movable block, a synchronous gear and a limiting pin shaft, the two ends of each center shaft are connected with the two side faces of the vibration exciter box body in a supporting mode through axial self-aligning bearings respectively, and the two static blocks are installed on the center shafts; the movable block is installed between the two static blocks, the synchronous gear is further installed on the center shaft on the outer side of the static block on one side, the two static blocks are fixedly connected with the synchronous gear through static block synchronous installation bolts, the two static blocks are connected through the limiting pin shaft, and a limiting pin shaft collision groove is formed in the movable block. The two-stage type torque-adjusting vibration exciter has the advantages that the center shaft is in a high-low two-stage eccentric torque state when rotating clockwise and anticlockwise, heavy-load low-frequency pile driving in a soft soil layer and small-load high-frequency pile driving in a hard soil layer are completed, static block eccentric keys are connected with the center shaft and arranged on the two sides of the movable block, the structure is stable, and the limiting pin and a movable block groove are limited through a molded surface to fix a rotating angle. The two-stage type torque-adjusting vibration exciter can be used for two or four eccentric gear occasions.