91results about How to "High mechanical precision" patented technology

The invention discloses a force sensing analog system based on a C-EPS structure. The force sensing analog system comprises a force sensing analog mechanical system based on the C-EPS structure and a force sensing analog control system. The force sensing analog mechanical system comprises a steering wheel, a steering column tube, a servo motor, a rotating angle limiting device, a torque sensor and a steering wheel rotating angle sensor; the force sensing analog control system comprises a controller and a control model; steering by different rotating angle scopes can be achieved through the rotating angle limiting device, and the shortcomings that a C-EPS system mechanical structure is large in inertia, large in friction and the like are overcome through a compensation model including friction compensation, moment differential, inertia compensation, damp compensation and rigidity compensation. The force sensing analog system is a hardware structure based on a volume production C-EPS system, the advantages that the hardware structure is simple and compact in structure, high in mechanical system accuracy, low in cost and the like are effectively used, and the force sensing analog system with aligning torque and excellent force sensing is designed.

A drainage valve intended to be implanted and to drain the cerebrospinal fluid, including: a body defining a chamber into which there open an inlet port and an outlet port, a stopper capable of at least partially, or indeed completely, closing off the inlet port, a resilient return member exerting a resilient push force on the stopper towards the inlet port in order to open or close the port, a rotor housed in the chamber, able to rotate about an X-axis pivot and including a cam track on which the resilient return member rests such that the force exerted by the resilient return member on the stopper is modified by the rotation of the rotor.

A spindle direction engaging device moves at least one of spindles in a mutually separating direction to closely engage a lock piece or a lock portion in a spindle direction of spindles while the lock piece is locked to the lock portion when a tire is not mounted. A second spindle includes a groove extending in a peripheral direction along an outer periphery thereof in sliding contact with the lock piece; sliding surfaces of the lock piece and the groove are receiving portions formed as flat surfaces to receive separating forces acting on both the spindles. A correction device corrects a gap between an inner ring of the spindle bearing and rolling elements of the spindle bearing, or a gap between an outer ring of the spindle bearing and the rolling elements of the spindle bearing, while the spindle is rotating. Preload bolts include a coolant passage formed by hollowing a corresponding portion passing a mounting hole of a detector, and a coolant can thus be supplied to the coolant passage.

The invention provides a slag fishing robot and a using method thereof. The slag fishing robot comprises a robot arm, a movable guide rail and a slag removal head clamp device, wherein the robot arm is arranged on the movable guide rail through bolts; the movable guide rail is driven by a servo motor and is driven by a gear rack, the movable guide rail is designed to be of a fully-closed structure, limiting switches are installed at the limit positions of the left end and the right end of the movable guide rail, and the robot can stop immediately when the robot reaches the left limit and the right limit; and one end of the slag removal head clamp device is installed on a mechanical arm flange plate. The slag fishing robot and the using method thereof can realize full-automatic slag removal, and comprises automatically positioning zinc slag and automatically selecting a slag removal tool, the height of the zinc slag in a slag hopper is positioned, the slag in the zinc pot is removed, and the waste slag is recycled.

A production method of an acoustic diaphragm including the steps of: forming an acoustic diaphragm-shaped workpiece with a flange portion added to at least a portion of an outer periphery of the workpiece by using a natural material including an organic matter which can be carbonized by burning; impregnating a solution including phenol resin into the workpiece obtained at the above step, and then heating the workpiece to a predetermined temperature to bring the phenol resin into a high polymer state; and burning the workpiece processed at the above step under a substantially anoxic atmosphere to carbonize the organic matter.

The invention provides a test probe device comprising a needle bed main body, a test needle, a plastic spring bracket and a pressure sensor, wherein the needle bed main body comprises a fixed seat, a test needle fixer, a U-shaped pressure adjuster and a pressure sensor fixed part; the test needle comprises a knife-type test probe and a signal output line connected with the test probe; the signal output line is connected with the fixed seat at the back end of the main body; the test needle is fixed on the plastic spring bracket, and the plastic spring bracket is fixed at the front end of the needle bed main body; the pressure sensor comprises a pressure sensor main body, a pressure data conducting wire and a pressure data conducting wire connector; the pressure sensor main body is fixed on the upper surface of the needle bed main body via the pressure sensor fixed part; the pressure data conducting wire is connected with the pressure sensor main body and the pressure data conducting wire connector; and light reflected bars are arranged below the induction device of the pressure sensor and at the upper surface of the plastic spring bracket.

A high-precision cylindrical coil having a high-precision fine coil pattern and a high mechanical precision such as fine roundness and no axial runout, and a cylindrical micrometer using the cylindrical coil are provided.In a cylindrical coil, a plurality of layers of coil patterns formed by filling the coil pattern grooves formed on a cylindrical substrate with a conductor and a plurality of insulating layers coating the cylindrical substrate are formed, the layers of coil patterns are electrically interconnected to each other by filling a through-hole formed by performing a hole forming process with a conductor, and the outmost layer is made of an insulating material.

The invention discloses an optical-mechanical structure for a vertical machining center. The optical-mechanical structure comprises a lathe bed, a standing column, a carriage, a workbench, a spindle box, a pulley, an X-axis transmission mechanism, a Y-axis transmission mechanism, a Z-axis transmission mechanism and a counterweight balance device. The standing column and the carriage are fixed on the lathe bed. The Z-axis transmission mechanism is mounted on the standing column. The spindle box is slidably disposed on the standing column and in drive connection with the Z-axis transmission mechanism. The pulley is fixed at the top of the standing column. The counterweight balance device is disposed on the standing column and connected with the spindle box through steel wire rope winding on the pulley. The X-axis transmission mechanism is mounted on the lathe bed. The carriage is slidably disposed on a slide rail of the lathe bed and in drive connection with the X-axis transmission mechanism. The Y-axis transmission mechanism is mounted on the carriage. The workbench is slidably disposed on a slide rail of the carriage and in drive connection with the Y-axis transmission mechanism. The Y-axis transmission mechanism is above the X-axis transmission mechanism. The optical-mechanical structure is shake-free and stable in operation, and accordingly machining precision is increased.

The invention discloses an ultrasonic C scanning automatic detection method for arc surface work pieces. According to the method, an ultrasonic probe is clamped through a six-degree-of-freedom industrial robot, the fact that a probe beam is always vertically emitted to an arc surface work piece during a detection process can be guaranteed, and real-time collection and plane imaging of original A wave of all scanning points are realized. The specific process comprises the followings steps: arbitrarily laying an arc surface work piece to a detection platform inside a water tank, obtaining Cartesian coordinates of 4 key points of the arc surface work piece by adjusting the position and pose of a mechanical arm and the level of ultrasonic echo signals on the surface of the work piece, and automatically planning a complete probe motion path and accomplishing corresponding ultrasonic acquisition and C scanned images. The method has the advantages that clamping and positioning are not required, arc surface work pieces are rapid and accurate to detect, high-precision and full coverage ultrasonic detection of the arc surface work pieces can be realized, detection efficiency of curved surface tracking is greatly improved, and occurrence of missing detection and false detection is effectively avoided.

The invention provides an optical element axial jogging adjustment device of a bridge type flexible hinge structure, and belongs to the technical field of photolithographic objective lens structural design and installation and adjustment. The jogging adjustment device aims to solve the problems that in the prior art, a required structure is large in space, many drivers are used and it is difficult to conduct structural design and manufacturing. The jogging adjustment device comprises a lens base connection piece, a lens frame connection piece and two jogging adjustment mechanism sets. The two jogging adjustment mechanism sets are arranged between the lens base connection piece and the lens frame connection piece and are symmetrical relative to a Y axis. Each jogging adjustment mechanism set comprises two bridge type flexible hinge sets and one input parallel hinge set. The two bridge type flexible hinges in each jogging adjustment mechanism set are connected by input parallel hinges and are symmetrical relative to an X axis. The input parallel hinges transmit the radial action force F to the bridge type flexible hinges, the bridge type flexible hinges convert the radial action force F to axial action force, and the axial action force is acted on the lens frame connection piece. The optical element axial micro adjustment device is easy to machine and manufacture, the drivers are arranged in the radial direction of optical elements and an adjustment structure is easy to design and manufacture.

The invention discloses an on track maintainable low-power consumption high-reliability space brake, which relates to a space brake. The invention aims to solve the problems of low reliability, high power consumption and incapability of on track maintenance for the existing space brake. A duplex-winding redundant magnet coil provided by the invention is installed in a circular groove; an air gap adjusting sleeve cylinder is sleeved on a connecting shafting; an armature friction plate is connected with a brake shell through a plurality of spring guide rods and a nut; a brake spring is sleeved on each spring guide rod; a large brake gear is fixedly sleeved on the connecting shafting; the end surface of a friction plate boss is in contact with the end surface of a gear boss; a gear shaft is penetrated on a brake cover; the inner shaft end of the gear shaft is provided with a small gear; a spring pressing cover is positioned at the outer side of the brake cover and is fixedly sleeved on the gear shaft; a manual spring is sleeved on the gear shaft; and when the brake works, the small gear is separated from the large brake gear, and when the brake is maintained, the small gear is meshed with the large brake gear. The on track maintainable low-power consumption high-reliability space brake is used for space service equipment.

The invention relates to the field of binding band detaching equipment in the industries of steel, metallurgy, papermaking, package and the like, in particular to a steel band bale breaker which comprises a rack provided with a shearing mechanism, wherein the shearing mechanism is arranged on one end of a rotary arm, and the other end of the rotary arm is hinged to the bottom of the rack; one end of a rotary arm cylinder is connected with the rotary arm, and the other end o f the rotary arm cylinder is connected with the waist of the rack; the upper part of the rack is provided with a band feeding hopper; the inlet of the band feeding hopper is provided with an attaching clamp band roll; the tail end of the band feeding hopper is communicated with a discharge bin; a band feeding mechanism is arranged between the inlet of the band feeding hopper and the attaching clamp band roll; a band winding mechanism is arranged between the band feeding hopper and the discharge bin; the waist of the rack is hinged to a reeling crank arm; the tail end of the reeling crank arm is provided with a floating reeling crank roll matched with the attaching clamp band roll, and the reeling crank arm is connected with the reeling crank cylinder with the other end connected to the waist of the rack or the bottom of the rack. The steel band bale breaker is free from manual locating, high in mechanical precision, low in speed, simple and rapid in length regulation and high in efficiency.

The invention discloses a welding process for pile leg stereo sectional erection, comprising the following steps: (1) welding butt welds between the rack plates at the same time; (2) welding butt welds between four side plates at the same time; and (3) welding butt welds between stiffeners of rack plates. The welding process for pile leg stereo sectional erection, provided by the invention, can improve the mechanical strength and the precision of pile legs.

The invention discloses a bidirectional hydraulic jack. A through cavity is formed in a cylinder barrel. The two ends of the cylinder barrel are provided with a first guide sleeve and a second guide sleeve respectively. The side wall of the cylinder barrel is provided with a first connector base, a second connector base and a third connector base which are communicated with the through cavity. A first piston rod and a second piston rod are arranged in the cylinder barrel and stretch out of a middle opening in the first guide sleeve and a middle opening in the second guide sleeve respectively, a first piston and a second piston are arranged on the outer wall of the first piston rod and the outer all of the second piston rod respectively, the first piston is located between the first connector base and the second connector base in the cylinder barrel, the second piston is located between the second connector base and the third connector base, and sealing pieces are arranged between the pistons and the cylinder barrel and among the guide sleeves and the piston rods respectively. The hydraulic support top beam balance keeping device is compact in whole structure, reasonable in design, capable of achieving bidirectional hydraulic support, stable and reliable in structure in the repeated use process and high in mechanical accuracy.

A process for fabricating a multi-wavelength semiconductor laser device exhibiting on excellent mass productivity. A first intermediate product is produced by forming a first multilayer laser oscillating section (1a) and a metal bonding layer on a semiconductor substrate SUB1, and a second intermediate product is produced by forming a second multilayer laser oscillating section (2a) smaller than the first laser oscillating section (1a) and a metal bonding layer that forms a trench contiguous thereto on a supporting substrate. Adhesive layers of the first and second intermediate products are fused together by bringing waveguides (1b, 2b) into close proximity thus producing an integrated adhesive layer CNT. After the first and second oscillating section (1a, 2a) are fixed, the supporting substrate is stripped from the second laser oscillating section (2a) to expose the adhesive layer CNT partially, thus fabricating a semiconductor laser device LD where the exposed adhesive layer CNT serves as a common electrode.

The invention discloses a six-station multi-head winding machine which comprises a case. A power device is arranged on the case, a transmission is connected onto the power device, an actuating device is connected onto the transmission and is fixed onto the case, six workpiece mounting stations are reserved on the actuating device, a lifting pin, a supporting plate seat and at least two rotary heads are arranged on each workpiece mounting station, an advancing and retreating mechanism is arranged on the case, driving mechanisms capable of driving workpieces to rotate in the workpiece mounting stations are arranged on the advancing and retreating mechanism, and a wire clamping mechanism capable of automatically shearing wires and wire hanging mechanisms capable of automatically hanging the wires are respectively arranged on the actuating device. The six-station multi-head winding machine has the advantages that the actuating device is driven by the power device, so that the wire clamping mechanism on the actuating device automatically shears the wires, the wire hanging mechanisms on the actuating device automatically hang the wires, multi-head winding is implemented, the wires are hung and shorn automatically, the winding efficiency is improved, and the working intensity of workers is reduced.

This invention is to provide a semiconductor laser device with a small interval between light emitting points of laser lights and a method of manufacturing the same. A first light emitting element 1a having a semiconductor substrate 12a and a laser oscillation section 10a, and a second light emitting element 2a having a laser oscillation section 4a, are brought together with a ridged waveguide 8 of the laser oscillation section 10a facing the ridged waveguide 5 of the laser oscillation section 4a, and then bonded together by virtue of SOGs 3a having a small thickness. A conductive wiring layer Qa1 electrically connected with an ohmic electrode layer 9a on the ridged waveguide 8a, and a wiring layer Qa2 electrically connected with an ohmic electrode layer 6a on the ridged waveguide 5a, are arranged to extend until the insulating layer 11a on the semiconductor substrate 12a. Further, the ohmic electrodes Pa1 and Pa2 are formed on the bottom surface of the semiconductor substrate 12a and the top surface of the laser oscillation section 4a, respectively. In this way, when a drive current is supplied between the ohmic electrode Pa1 and the wiring layer Qa1, the laser oscillation section 10a will emit a light. On the other hand, when a drive current is supplied between the ohmic electrode Pa2 and the wiring layer Qa2, the laser oscillation section 4a will emit a light. In this manner, since the laser oscillation sections 4a and 10a are bonded together by virtue of SOGs 3a having a small thickness, it is allowed to form a semiconductor laser device with a small interval between light emitting points.

An image display device of a high quality, in which the variation of heights between adjoining spacers is reduced by measuring the heights of spacers to arrange the spacers from the end in the sequential order of heights so that the mechanical precision of the spacers need not be strictly managed.

The invention provides a magnet arrangement in an NMR apparatus comprising a superconducting magnetic coil system (C) for producing a homogeneous one with a He container (H1) having liquid helium and a He inner tube (H), the magnetic coil system being mechanically rigidly connected to the He container , Wherein a radiation shield with a radiation shield inner tube (S) surrounds the He container at a distance for reducing the evaporation rate of the liquid helium, and wherein a field shaping device (P) made of magnetic material for shimming the homogeneous magnetic field is arranged in the space between the he inner tube and the radiation shield inner tube , Is characterized in that the field-shaping device is fixed in the space between the he inner tube and the radiation shield inner tube in such a way that it is in a rigid mechanical contact with the He container without touching the radiation shield inner tube.The field shaping device can be installed in the cryostats so that it does not move relative to the superconducting coils. The He container does not have to be opened for work on the field-shaping device and a decomposition of the cryostat is avoided.

A magnet assembly has a field shaping device (P1) that is cylindrically symmetric with respect to the z-axis and made of magnetic material. At least parts of the field shaping device have a radial distance from the z-axis of less than 80 millimeters and compensate for at least one of the inhomogeneous field parts An0·zn of the magnet coil system. The field shaping device has one or more non cylindrically symmetric recesses, which are constituted such that at least a coefficient Anm or Bnm in the magnetic field expansion of the magnet assembly according to the spherical harmonic functions is reduced by at least 50%. In this way, the field homogeneity of the working volume can be substantially increased in a simple manner and without increasing the volume of the magnet assembly, wherein only a few iterations are required to optimize the magnet assembly.

The invention relates to an insulating padding plate for a precision machine and a manufacture method for the insulating padding plate. An insulating padding plate body is provided with countersunk holes and blind holes, wherein the countersunk holes are used for fixedly connecting the insulating padding plate with components below the insulating padding plate, and the blind holes are used for fixedly connecting the insulating padding plate with components above the insulating padding plate. An aluminum post with a threaded hole is adhesively fixed into each blind hole, and the insulating padding plate body is made of marble or granite with protodikonov's hardness coefficient f larger than 8 and smaller than 10. The manufacture method for the insulating padding plate includes the steps: machining the marble or granite raw materials into blanks in the required shape by means of a sawing method and a chiseling method; machining the blind holes and the countersunk holes with a diamond tapper; adhesively fixing the aluminum posts into the blind holes; machining the screwed holes on the aluminum posts with a screw tap; and grinding with a cast iron millstone, and finally obtaining the insulating padding plate with required precision. The insulating padding plate is high in stability and precision and low in cost and can be widely applied to high-precision mechanical equipment.

The invention relates to a marine crane automatic-control experimental system. The system comprises a crane simulator( used for simulating the motion characteristics of real crane, and serving as a control subject of the whole system), a ship motion simulator( used for simulating the movement condition of real crane in the sea and regarded as the working environment of the crane simulator), a measuring equipment of movement condition( used for measuring the real-time movement information of the crane and the ship body simulator and sending the information to a control system as a feedback signal) and the control system( used for addressing various feedback signals in real time and synthesizing the corresponding control command and sending the command to a servo motor, so as to make the crane and the ship body simulator generate expected movement). The marine crane automatic-control experimental system has the advantages of truly reflecting the motion characteristics of the crane for ship under the sea surface working environment and being convenient to make experimental verification for various corresponding control algorithms.

The invention discloses a gear traction high-speed maglev train system. A multifunctional long rail is mounted in the middle line of a horizontally-arranged-E-shaped long rail; the multifunctional long rail integrates a left transmission long rack, a right transmission long rack and a long-strip-shaped brake plate, so that positioning of a gear transmission mechanism, a strip-shaped plate brakingmechanism and resultant force magnetic levitation device tracks is accurate; the mechanisms are stable and reliable; a left and right long high platforms are arranged on the left and right resultant force maglev device tracks to support two sides of the maglev train, so that the gravity center of the maglev train is low and the safety of the maglev train high; the height of magnetic levitation isautomatically adjusted according to the load capacity of the train, a complex magnetic levitation control system is omitted; a plurality of high-speed electric gear traction systems replace an expensive linear motor driving system; a plurality of high-speed electric gears and left and right transmission long racks are in meshing transmission to float up and down along with a bogie, do not bear thegravity of the train, and therefore, traction efficiency is high.

The invention relates to a arrangement for feeding a centrally focused reflector antenna, comprising a waveguide (1), a dielectric field transformer (2) arranged on said waveguide (1) and a mounting platform (3) for a series of modules (8) which is embodied on one end of the waveguide (1) The waveguide (1) is provided with a means for receiving the dielectric field transformer (2) which partially protrudes into the waveguide (1). In a preferred embodiment, a dielectric support (9) is provided in the vicinity of the dielectric field transformer (2). The middle of said support has a circular bore (12) whose diameter corresponds to the diameter of the dielectric fields transformer (2). One advantage of the invention is that the centrally focused reflector antennae can be excited in the focal point thereof in a field-optimum broadband manner. No mechanically displaced components are required as a result of the dielectric fields transformer. The inventive device can be produced in a cost-effective manner with high mechanical precision and little effort. It is characterized by high tolerance with respect to various environmental conditions such as temperature, humidity of the air and aggressive media.An arrangement for feeding a centrally focused reflector antenna includes a waveguide (1), a dielectric field transformer (2) arranged on the waveguide (1) and a mounting platform (3) for a series of modules (8) which is embodied on one end of the waveguide (1). The waveguide (1) is provided with an arrangement for receiving the dielectric field transformer (2) which partially protrudes into the waveguide (1). Preferably, a dielectric support (9) may be provided in the vicinity of the dielectric field transformer (2). The middle of the support has a circular bore (12) whose diameter corresponds to the diameter of the dielectric field transformer (2). The centrally focused reflector antenna can be excited in the focal point thereof in a field-optimum broadband manner.

The invention discloses a deproteinised natural rubber preparation method including the following steps: 1) adding a stabilizer in a fresh natural rubber latex or a concentrated natural rubber latex for stabilizing; 2) adding deionized water to dilute the rubber latex, carrying out centrifugal separation to remove impurities, and collecting an upper rubber phase; 3) diluting the upper rubber phase obtained in the step 2) with deionized water, adding a compound enzyme preparation under stirring and weak alkali conditions, and degrading proteins in the rubber latex under certain reaction conditions; and 4) carrying out centrifugal separation with a centrifugal machine to remove impurities obtained after the proteins are degraded, carrying out repeated degradation to remove the proteins contained in the latex, and thus obtaining deproteinised natural rubber. In addition, the invention also discloses the deproteinised natural rubber prepared by the method. The content of protein amino acids of the deproteinised natural rubber can reach less than a 0.67 ppm reagent detection limit value, and the deproteinised natural rubber can be used in production of various medical latex products and can avoid generation of allergy caused by natural rubber.

The invention provides a series-parallel minimally invasive surgery mechanical arm with five degrees of freedom. The series-parallel minimally invasive surgery mechanical arm with five degrees of freedom comprises a main fixed platform, a main movable platform, a reversing fixed platform and a working movable platform; the main fixed platform and the main movable platform are connected by use of three first motion branch chains with the same structure to form a first closed-loop parallel structure with three degrees of freedom; the reversing fixed platform and the working movable platform are connected by use of three second motion branch chains with the same structure to form a second closed-loop parallel structure with three degrees of freedom; the two closed-loop parallel structures with three degrees of freedom are connected in series to form the series-parallel minimally invasive surgery mechanical arm with five degrees of freedom. According to the series-parallel minimally invasive surgery mechanical arm with five degrees of freedom, the movement of the working movable platform in the three-dimensional space is realized by changing the included angles between three driving arms and the main fixed platform by use of three first driving motors; the reversal motion of the working movable platform is realized by changing the extension quantity of three linear driving rods by use of three second driving motors; five degrees of freedom can be provided for a surgical instrument; the mechanical arm is suitable for assisting a doctor to finish high-precision and high-difficulty minimally invasive surgeries.