304results about How to "Accurate and stable positioning" patented technology

The embodiment of the invention discloses a magnetic-field measurement device and a manufacturing method thereof as well as a magnetic-field measurement method. The magnetic-field measurement device comprises a combined optical fiber, monocrystal diamond particles, a microwave transmission line, a microwave generator, a laser device and a spectrometer, wherein the combined optical fiber is prepared by connecting two optical fibers; the monocrystal diamond particles are packaged between the end faces of the two optical fibers and provided with single NV colour centers; the microwave transmission line is arranged at the external wall of the combined optical fiber; the microwave generator is connected with the microwave transmission line; the laser device is connected with one end of the combined optical fiber; and the spectrometer is connected with the other end of the combined optical fiber; and exciting lights are input from one end of the combined optical fiber, and fluorescent lights of single NV colour centers are received from the other end of the combined optical fiber. In the invention, through carrying out measurement on magnetic fields by using the single NV colour centerspackaged in the optical fiber, the application of a confocal microscope system is avoided, the cost for finding the single NV colour centers is reduced, and the time and manpower are saved; and meanwhile, the magnetic-field measurement can be conveniently performed by using the single NV colour centers in any magnetic-field environment without being limited by the confocal microscope system.

A method of manufacturing a solenoidal magnet structure, includes the step of providing a collapsible accurate mold in which to wind the coils winding wire into defined positions in the mold, placing a mechanical support structure over the coils so wound, impregnating the coils and the mechanical support structure with a thermosetting resin, allowing the thermosetting resin to harden, and collapsing the mold and removing the resultant solenoidal magnet structure formed by the resin impregnated coils and the mechanical support structure from the mold as a single solid piece.

The invention relates to a reinforced concrete shear wall with a positioning prefabricated member inside and a construction method of the reinforced concrete shear wall. The construction method includes: manufacturing the prefabricated member; arranging the prefabricated member on a floor slab structure; making positioning ladder rebars; binding rebars; mounting the prefabricated member; mounting steel formworks; setting up a steel formwork inclined strut. During constructing the reinforced concrete shear wall, vertical ladder rebars and horizontal ladder rebars are adopted as a positioning supporting frame for rebar binding, and the positioning prefabricated member is clamped in horizontally-vertically-distributed rebars, so that thickness of a protection layer is guaranteed and connection of rebar nets is enhanced; the assembly steel formworks are arranged on two sides of the rebar nets, oppositely-puling threaded rods penetrate connecting steel pipes to be fastened on embedded members of the steel formwork inclined strut and the floor slab structure through screws, and concrete is poured to form a shear wall structure. By using the construction method, construction site order and construction efficiency are improved, related measures guarantee construction quality of the shear wall, rebar positioning accuracy and thickness accuracy of the protection layer are improved remarkably, and the construction method has good technical and economic benefit.

The invention discloses a three-dimensional modeling method and system combined with a laser radar and a spherical curtain camera, which relates to the technical field of three-dimensional imaging modeling. The method comprises the following steps: scanning the current scene with a laser radar to obtain data in real time; triggering a spherical curtain camera to take photographs and obtain panoramic photographs; uploading radar data and panoramic photos to the mobile terminal, calculating a path and buffering the panoramic photos according to the radar data through the mobile terminal; uploading the path data and panoramic photo data processed by the step to the server for three-dimensional modeling. Laser radar real-time scanning and positioning, compared to running into a white wall, when the characteristic points such as glass and the like are few, the vision-based SLAM which is lost in tracking will appear. The real-time scanning and positioning of the laser radar is more stable and accurate than the video stream positioning of the vision-based SLAM, and the created three-dimensional model will not produce model distortion, and the scene of the created three-dimensional model is more accurate and reliable.

The invention discloses an RPA robot intelligent element positioning and picking method and system. According to the method, firstly a problem that a remote desktop, a virtual system and other elements cannot be positioned and operated is solved through employing a computer vision technology combining template matching, OCR and image retrieval, and a proposed new scheme can more accurately and stably locate and pick up the positions and contents of the elements on the picture; secondly, an element positioning scheme based on template matching is adopted, a large number of labeling samples arenot needed, and the scheme is more stable and controllable; thirdly, pixel point features, corner point features and convolution features of a deep neural network are fused, so that the template matching effect is more accurate and stable, and meanwhile, the OCR technology can further assist in positioning elements with text information; and finally, a template library retrieval engine is constructed by adopting an image retrieval technology, and which application the page picture to be processed belongs to can be accurately judged, so that the problem of low retrieval and matching speed caused by template library growth in multiple scenes is solved.

The invention discloses an indoor high precision personnel positioning system. The system comprises a label, a base station and a positioning engine, wherein the label comprises a casing, the casing is internally provided with a battery module, a first circuit board, a first antenna, a first UWB transceiver chip, a first single-chip microcomputer, a first USB connection female seat and a motion sensing chip, the base station is provided with a second antenna, a second circuit board, an external power supply port, an RJ45 network port, a second USB connection female seat, a second UWB transceiver chip, a second single-chip microcomputer and a serial port server, the positioning engine includes a positioning server, and positioning algorithm software is installed on the positioning server. The system is advantaged in that one-dimensional and two-dimensional positioning can be completed through simply selecting two base stations by the positioning algorithm, the system is suitable for specific environments such as data centers, through comparing signal intensity of the label at cabinet channels of the base station, label positioning base station group selection is made to be more accurate.

The invention belongs to the technical field of geotechnical engineering model test equipment. The proposed geotechnical engineering anti-explosion structure model test device is composed of a side-limited box body and an explosion pit at the lower part, and is equipped with a matching wave-eliminating mechanism, a locking mechanism and a sliding Positioning mechanism; wave dissipation mechanism includes aluminum wave dissipation grid (21) and wooden wave dissipation plate (20); sliding positioning mechanism includes two-way jack cylinder (15), guide rail (17) and limit block (19); locking The mechanism is composed of a locking pull rod (3), a side limit connecting block (18) and a nut (2). The invention can simulate different explosion forms in equipment with moderate size; meet the convenient and feasible requirements for excavation of caverns, installation of enclosure structures and measurement equipment; it can be reused, and it is beneficial to observe the damage of structures in the test; The results can provide an important basis for underground explosion-resistant engineering design and scientific research.

The invention discloses a reagent tray, which comprises a main tray arranged on a rotating shaft in a shell, and a reagent site tray; a reagent bottle frame tray and a reagent bottle bracket tray are arranged on the main tray; a neck is arranged on the reagent bottle frame tray; a reagent bottle socket and a driven gear are arranged on the reagent bottle bracket tray through a wheel axle; a shaft sleeve is sheathed on the rotating shaft through a bearing; a connecting shaft sleeve tray and a transmission wheel are fixed on the shaft sleeve; a drive gear engaged with the driven gear is fixed on the connecting shaft sleeve; the transmission wheel is coupled with a stirring motor on the bottom plate of the shell through a transmission member; a refrigeration unit, a temperature sensor and a bar code scanner are arranged on the bottom plate of the shell; a bar code scanning window is arranged on the side wall of the shell corresponding to position of the bar code scanner the shell; and a reagent needle hole is arranged on the upper surface of the shell cover. The reagent tray realizes the movement and the stable and accurate locating for a plurality of groups of reagent bottles so that the reagent suspension keeps a continuously uniform state, thereby greatly improving the detection efficiency and the uniformity and accuracy of experiment data for a reagent bin.

The invention provides a vertical type ground hinge mechanism. An upper hinge and a lower hinge adopt a sliding friction pair comprising a pair of vertical annular meshing teeth, a meshing surface is a helical surface, the lateral end surfaces of the meshing teeth are vertical stopping surfaces, and the mutual meshing teeth are provided with positioning tooth sockets so as to form the vertical type ground hinge mechanism. The vertical type ground hinge mechanism converts the rotational motion of a hinge mechanism into straight line motion and has the advantages of simple structure, excellent firmness and duration, heavy load-bearing weight and accurate and steady positioning, and can be widely used in opened hinge mechanisms, such as doors, windows, and the like.

The invention discloses a positioning tool for welding a transformer tank, and relates to the technical field of welding and positioning tools. The positioning tool comprises a bottom plate, wherein an inner side positioning mechanism and an outer side positioning mechanism are arranged on the bottom plate. The inner side positioning mechanism is as follows: a plurality of first fixing plates which are vertically arranged are arranged on the bottom plate; a 7-shaped body is arranged on each first fixing plate, and is hinged with each first fixing plate through a first rotating shaft; the vertical section of each 7-shaped body is arranged at one side close to the side of the bottom plate, and is arranged at the upper side of a transverse section; the inner end of the transverse section is hinged with a vertical bar; the bottom end of the vertical bar is connected with a cross bar; the cross bar is connected with a piston rod of a cylinder; the bottom end of the vertical bar is also connected with a spring. The outer side positioning mechanism is as follows: a plurality of second fixing plates which are arranged along the extension direction of the side of the bottom plate are arranged on the edge of the bottom plate; and quick clamps are arranged on the second fixing plates. The tool is capable of quickly positioning an oil tank side plate to be welded, so that the welding is quick and accurate, and is carried out in place.

The invention provides an automatic silk-screen printing device. The device comprises a movable clamping groove, a movable arm, a fixed arm, a fixed clamping groove, a right scraper, an ink nozzle, a nozzle groove, a bottom plate and universal wheels. The movable clamping groove is formed in the movable arm, the fixed clamping groove is formed in the mixed arm, and the problem that a screen clamping structure is not adjustable in range and accordingly the application range is small is solved by means of the design, and the purchase quantity of silk-screen equipment is reduced; the nozzle groove is formed in the lower end face of the right scraper, the ink nozzle is installed in the nozzle groove, the problem that existing silk-screen equipment wastes printing ink is solved due to the design, the work environment becomes clean, and waste of the printing ink is reduced; the universal wheels are installed on the lower end face of the bottom plate, the problem that the silk-screen equipment is difficult to carry is solved due to the design, labor intensity of workers is reduced, the silk-screen equipment can be quickly and conveniently carried by the workers, and work efficiency is improved. The automatic silk-screen printing device is simple, convenient to operate, simple in printing and platemaking, low in cost and high in adaptability.

The invention discloses a tipping device of a molten iron tank pouring station. The tipping device comprises a foundation assembly, a base assembly, a dipping frame assembly and a driving cylinder. The foundation assembly is fixed in the ground through concrete casting. The base assembly is fixedly connected to the upper surface of the foundation assembly, and is provided with a support table, a frame hinge part and a cylinder hinge part. The dipping frame assembly is provided with a first hinge part, a second hinge part, a molten iron tank positioning support device and a support surface; the first hinge part is rotationally connected withe the frame hinge part; and the molten iron tank positioning support device is used for positioning and supporting molten iron tanks. A cylinder body of the driving cylinder is rotationally connected with the cylinder hinge part; and the end part of an extension rod is rotationally connected with the second hinge part. The tipping device is convenient to plan support points and hinge points thereon according to demands through a structure arrangement mode, and guarantees to achieve the function of pouring the molten iron tanks with lower investment and smaller floor area. A guide plate can quickly put and lift the molten iron tanks in and out of the dipping frame assembly to achieve the positioning accuracy.

The invention discloses a testing device and a testing method for fire propagation characteristic for a building exterior wall thermal insulation board. A deformable body is stretched or shortened torealize diverse shapes of a simulated single building, and diverse building wall structures can be rapidly and conveniently constructed, to gather and form a building community; the simulated single building can be rapidly fixed with a bottom platform by location fit of a location bottom seat and a location hole, to realize convenient and fast disassembly and assembly, while accurate and stable location function can be realized for the simulated single building with various sizes and orientations, without generating position shifting under a larger wind speed environment; and the simulated building group modules can also be freely increased and decreased and spliced according to requirements, to construct a test scene of an expected scale, with characteristics of flexibility, convenience,and fastness. The device can be used for large-scale fire propagation performance testing of various complex building communities, and is expected to provide a basis for the improvement of such standards.

The invention provides a lifting supporting type elevator shaft formwork device. A bottom supporting start device comprises a rectangular bottom plate, a rectangular barrel, a hydraulic station, a control box and a positioning supporting assembly. An elevator shaft formwork assembly is provided with a rectangular platform plate, vertical folding plates, a rectangular connecting plate, a rectangular connecting frame, a cross-shaped supporting frame and a lifting hook. Multiple horizontally-arranged hydraulic cylinders are further arranged. The execution ends of the hydraulic cylinders are vertically hinged to a rectangular downhole formwork formed by two front and rear first planar formworks, two left and right second planar formworks and four right-angle formworks. Through the combinationof the bottom supporting start device and the elevator shaft formwork assembly, the formworks in an elevator shaft are conveniently laid, a protective platform is formed in the elevator shaft, throughlifting of a tower crane, the above elevator shaft continues to be supported through inserted connection of the positioning supporting assembly and a drum body for facilitating formwork erecting, andthe technical problems that formwork erecting in an existing elevator shaft is inconvenient and not safe, and the formworks are prone to deform during formwork removal are solved.

The invention discloses a prefabricated concrete supporting device comprising ground rods fixed on a building floor though foundation bolts, a first bolt hole and a second bolt hole formed in the ground rods, columns fixed on the ground rods, a column locking plate arranged on a shell of a prefabricated column, adjusting rods with one ends connected to the column locking plate and the other ends connected to the ground rods, cross bridges arranged between the columns, upper transverse rods arranged on the upper portions of the columns, lower transverse rods arranged below the upper transverse rods, upper transverse rods and lower transverse rods fixed on the columns, column positioning rods fixed on the upper transverse rods, a shell of a prefabricated beam fixed on a beam holding plate, and the beam holding plate fixed on the upper transverse rods. Prefabricated-shell and cast-on-site assembled-on-site integral type RC (reinforced concrete) structure is a novel form of an assembled structure, protective layers of stressed components, namely the beam and the columns, are prefabricated as shells, the core-part concrete and node-part concrete are all casted on site, and accordingly the structure performance can be guaranteed.

The invention discloses an electromagnetic fuel injection valve, which comprises a spray pipe inlet. An iron core is arranged in the spray pipe inlet, and a coil is wound on the iron core; the coil is connected with an electrode plate; a spring is arranged in the iron core; one end of the spring is pressed in the iron core, while the other end is pressed on a magnet; a spray pipe main body is sleeved outside the magnet; the spray pipe main body is in sealed connection with the spray pipe inlet; a valve seat is arranged in the spray pipe main body and is provided with a valve hole; and the front end of the magnet is fixed with a steel ball which is matched with the valve hole and is used for closing and opening the valve hole. The injection valve has the advantages of accurate control of oil injection, quick dynamic response, high product stability, simple structure and low processing cost.

The invention discloses an elastic force manipulating structure of a tilt-up door of furniture, which comprises an upturning device, wherein the upturning device comprises a fixed seat, a hinge arm, a spring, a connecting arm assembly and an adjusting assembly which is used for adjusting the magnitude of opening and close force of the upturning device; the connecting arm assembly at least comprises a first connecting arm and a second connecting arm; one end of the first connecting arm is hinged to the fixed seat; the other end of the first connecting arm is hinged to one end of the second connecting arm; the other end of the second connecting arm is hinged to the fixed seat and / or the hinge arm; the first connecting arm and the second connecting arm are hinged by a first pin shaft; a groove is formed in the first pin shaft; one end of the spring acts on the groove; the other end of the spring acts on the second pin shaft of the adjusting assembly; the spring generates displacement relative to the fixed seat by the adjusting assembly under the effect of a tool, and finally, the magnitude adjustment of opening and closing force of the upturning device can be realized. The elastic force manipulating structure of the tilt-up door of furniture has the characteristics that the structure is simple and reasonable, the performance is reliable, the production is easy, the implementation is easy, the adjustment is rapid, the operation is convenient, the use range is wide, the opening and closing are smooth, the collision is small, the noise is low and the like.

The invention discloses a method for performing precision grinding to the end surface of a super-large cylindrical roller. The method is as follows: one end surface of the cylindrical roller is closely adsorbed by a magnetic pole, the rolling surface of the cylindrical roller is positioned on a positioning mechanism which forms a certain angle to the vertical line, the roller rotates in the driving manner of rotating magnetic pole adsorption, the centre line of the roller is parallel to the rotating centre line of the grinding wheel while the roller and the grinding wheel rotate around the separate centre lines; a grinding head provided with the grinding wheel performs axial movement to grind; after the end surface of the roller is grinded, the grinding head moves backward, the processed workpiece is taken down; and another workpiece to be processed is arranged, the above steps are repeated to perform the next processing cycle. Compared with the prior art, the method of the invention can be used to position the workpiece stably and accurately; and the workpiece can operate steadily during processing, the grinding wheel is convenient for dressing, and the feeding position is easy to control.

The invention discloses a modular sensor and a manufacturing technique thereof. The modular sensor comprises a cavity module, a framework module, a circuit board, a Hall chip and a cover plate, the top of the cavity module is opened, a positioning groove is formed in the bottom of the cavity module, and the cavity is integrally injected and molded with PIN needle module; strip through holes are formed in the rear end of the framework module, two position spacing tables are arranged on the upper end surface of the framework module, a positioning lug boss is arranged on the lower end surface of the framework module, and a clamp groove comprising two buckles and one support table and used for accommodating the hall chip is formed in the outer part of the front end of the framework module. The buckle adopts an inner side interference pointed hook part and an end surface hot riveting spur, so as to enable the hall chip to be fixed and confined in the space; the elasticity of the metal PIN needle and the matching structure of the cavity module and the framework module guarantee the framework module to be accurately positioned and fixedly connected in the cavity body module, and prevent the electric element from being damaged after glue flowing uncontrolled cover the electronic element temperature shock; the front end surface of the hall chip and the front cavity surface of the cavity module are closely pressed, but the compression force is not so large as to cause deformation and damage of the cavity module front end, so as to effectively guarantee sensor information.

The invention discloses a lift car positioning device which comprises a positioning device assembly and a limiting sleeve assembly. The positioning device assembly is used for being mounted on a frame of a lift car, and the positioning sleeve assembly is used for being mounted on a steel framework corresponding to the stopping position of the lift car in a parking layer of a stereo garage. The positioning device assembly comprises a hydraulic system, a hydraulic cylinder, a supporting seat and a positioning shaft. The hydraulic system is connected with the hydraulic cylinder, the hydraulic cylinder is fixed on the supporting seat, the positioning shaft is telescopically mounted in the supporting seat, and an extension rod of the hydraulic cylinder is connected with the positioning shaft in the axial direction. The positioning sleeve assembly comprises a positioning sleeve tube, a conical containing space is arranged in the positioning sleeve tube, and the front end of the positioning shaft is matched with the containing space. The invention further discloses the stereo garage with the lift car positioning device. According to the lift car positioning device and the stereo garage, it is guaranteed that the lift car is stably positioned on the parking layer, so that it is ensured that vehicles can come in and out of the parking layer stably and safely.

The present invention discloses an indoor and outdoor integrated positioning and navigation method and system, and relates to the field of positioning fusion. The method comprises: step 1: obtaining GPS, Bluetooth and inertial positioning data; step 2: after performing adaptive weighting, Kalman filtering and distance-based correction on the positioning data to complete positioning solving to obtain a final positioning point; step 3: performing point set division on a navigation line to obtain a reference point for projection calculation, and using a sliding window and curve geometric projection to project the final positioning point onto the reference point of the navigation line to obtain a projection point; and step 4: using the projection point for navigation and map display. Accordingto the technical scheme of the present invention, an adaptive weighting and Kalman filtering model is used to obtain a smooth positioning result, and distance-based correction is performed on the result to obtain stable and accurate positioning, so that the difficulties of the calculation amount, the real-time performance and stability caused by the fusion of inertial positioning, Bluetooth positioning and GPS positioning are overcome, and smooth indoor and outdoor integrated positioning and navigation can be achieved.

The invention discloses a high-performance low-voltage power distribution cabinet remote and on-site monitoring system. The system comprises a low-voltage power distribution cabinet monitoring center,a battery electric quantity remote monitoring system, an on-site diagnosis display system and a low-voltage power distribution cabinet state remote monitoring node. According to the invention, modular splicing is adopted, corresponding modules are selected according to the complexity of controlled equipment, and the system is built by taking a central processing module as the primary and each peripheral module as the auxiliary; a whole network communication module and an Ethernet network module are adopted, so that the optionality of data transmission paths is diversified, wireless 4G / 3G / 2G and wired Ethernet communication are realized, and the whole network communication module integrates a Beidou and a GPS positioning system and can receive Beidou and GPS signals and provide three-dimensional position information; and the integration level is high, interference resistance is achieved, and stable and accurate positioning can be achieved in a complex environment, a 7-inch touch display screen is adopted, various kinds of collected information and fault information can be displayed, a solution can be displayed when a fault occurs, and fault processing is facilitated.

A braking device for an electric motor includes two brake pads, which are connected to brake disks, which cooperate with a brake rail. The two brake pads are rigidly connected by a connecting element, which is able to experience a certain deflection under the influence of a piezoelectric element, which is used to distance the two brake pads from each other. An assembly, which includes the two brake pads and their connecting element, is fastened on a support by a fastening device, which is elastically deformable along the direction at right angles with respect to the brake rail and to the two brake pads. The elastically deformable fastening device is formed of plates, which are connected on one end to the assembly and on the other end to the support.

An adjusting mechanism of a furniture drawer comprises side plates, a bottom plate, a back plate, a front plate and slide rail components used for opening and closing the drawer. Rear connectors and front connectors used for connecting the back plate with the front plate are arranged at the front end and the rear end of each side plate respectively, each slide rail component at least comprises a pull-out rail, a stabilizing portion is arranged at the rear end of each pull-out rail, a cavity is arranged in each side plate, each rear connector is fixedly arranged in the corresponding cavity and slidably provided with an adjusting element, and each adjusting element is supported on each pull-out rail and plays a positioning role on the corresponding stabilizing portion; an adjusting device is arranged in the lower region of the cavity of each side plate and at least provided with a screw gear part, and one end of each screw gear par is rotationally connected with the corresponding adjusting element in a threaded manner while the other end is rotationally positioned on each adjusting device. By gear drive, the side plates are enabled to move up and down relative to the adjusting elements, the inclination angle of the drawer relative the pull-out rails is adjusted, and practicality is high.

The invention relates to large-scale tunnel steel arch machining, in particular to a tunnel steel arch machining limiting device and method. The tunnel steel arch machining limiting device comprises awelding limiting mould; the welding limiting mould comprises a positioning cross beam, limiting clamping plates which are symmetrically and vertically arranged on the lower surfaces of the two ends of the positioning cross beam and welding positioning plates which are arranged on the front ends of the limiting clamping plates; the two limiting clamping plate are arranged oppositely and parallelly, and the distance between the two limiting clamping plate is the same as the width of a wing edge of steel arch joist steel; the length of each limiting clamping plate is greater than the height of the steel arch joist steel; the upper ends of the welding positioning plates are fixedly connected to the lower surface of the positioning cross beam, and the inner side of each welding positioning plate is vertically connected to the front end of the corresponding limiting clamping plate; two positioning posts are separately arranged on the front surface of each welding positioning plate; and thepositions of the four positioning posts are the same as those of connection through holes in a steel arch connection steel plate. The tunnel steel arch machining limiting device is simple in structure, reasonable in design and convenient to use; the machining efficiency and the production qualification rate of arches can be greatly improved; and a practical and feasible device and method is provided for large-scale on-site production.

The invention provides a fully-automatic truck loading method. A fully-automatic truck loader comprises a supporting base device, a main body arm device, a telescopic arm device, a barrel-loading lifting mechanism device, a fall transporting mechanism device and a left-right mechanical truck loading arm device, wherein the main body arm device is fixed above the supporting base device; the telescopic arm device is arranged in the main body arm device; the barrel-loading lifting mechanism device is positioned at the rear end of the main body arm device; the fall transporting mechanism device is fixed above the front end of the main body arm device; the left-right mechanical truck loading arm device is positioned at the rear end of the telescopic arm device. The fully-automatic truck loading method has the benefits that the truck loader is high in degree of automation; the truck loading labor is greatly reduced; the truck loader is controlled under the driving of a servo motor and has an accurate and stable positioning function; barreled water can be handled gently by the truck loader in a similar mode of grabbing an object by an arm of a person, the fatigue feeling is avoided, the influence of a working attitude is eliminated, and the breakage rate of sample barrels is minimized.

The invention discloses a balance calibration loading sleeve. In modes of pin positioning and threaded pressing, a loading nail of the balance calibration loading sleeve disclosed by the invention isfixed on a sliding block, then the position of a loading point can be relatively precise and solid, and through continuous movement of the sliding block in a chute, continuous adjustment and continuous accurate positioning of the position of the balance calibration loading point can be achieved. By adopting the balance calibration loading sleeve disclosed by the invention, in unit calibration of anormal force and a lateral force, interference caused by relatively large additional pitch moments and yawing moments can be avoided; in multi-element calibration, the position of the loading point can be controlled, and the moments can be accurately adjusted according to requirements of a loading table; and by using the balance calibration loading sleeve disclosed by the invention, the positionprecision of the balance calibration loading point can be improved to 0.05mm.

A soft custom ear mold (300) comprising: an inner ear mold part (100) consisting of a first bushing (101), a sound tube (102) and an ear wax guard bushing (103), and an outer ear mold part (200) that is adapted to fit an individual ear canal and comprises a sound conduit having holding means adapted to engage said inner part (100). The holding means defines the correct positioning of said inner part (100) in the sound conduit of said outer part (200) whereby a precise and stable positioning of the ear wax guard bushing (103) in the soft custom ear mold (300) is provided. The invention also relates to a hearing aid comprising such an ear mold (300, 900), a method for manufacturing such an ear mold and a tool for carrying out a part of said manufacturing method.