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189results about How to "Guaranteed positional relationship" patented technology

Dual-circular polarization microstrip antenna array

The invention discloses a dual-circular polarization microstrip antenna array which comprises a metal frame, a radiation microstrip board, metal columns, foam, a feeder microstrip board, a metal floor and connectors. Directional couplers, power dividers, radiation patches and isolation hole arrays are integrated by the feeder microstrip board, so that dual-circular polarization radiation functions can be realized. Impedance matching and bandwidth broadening functions can be realized by the radiation microstrip board and a foam board. The connectors are used as interfaces of the dual-circular polarization microstrip antenna array and feeder line systems. Grounding and protection effects can be realized by a frame which comprises the metal frame and the metal floor. Interlayer positioning, structure strengthening and resonant effect eliminating functions can be realized by the metal columns. The dual-circular polarization microstrip antenna array has the advantages that double-layer microstrip patch antennas, circular polarization power division feeder, positioning and supporting, resonance eliminating, mutual coupling isolation and environmental protection technologies are combined with one another, accordingly, merits of low profiles, costs and cross polarization of the traditional circular polarization microstrip patch antennas are inherited, and the dual-circular polarization microstrip antenna array is simple and firm in structure and convenient to process and can be used as a communication or radar dual-circular polarization phased-array antenna.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST

Wire stripping tool

The invention relates to a wire stripping tool comprising a cutting mechanism and a cable locating sleeve, wherein the cable locating sleeve is provided with an inner hole having an axial line extending along the left and right direction and used for locating and penetrating through a corresponding cable, the cutting mechanism comprises a mechanism seat, a locating sleeve guide mechanism forming guide movement fit with the cable locating sleeve along a direction vertical to the left and right direction is arranged on the mechanism seat, two cutter bodies used for cutting an aluminum stranded wire on the outer side of a steel core are further arranged on the mechanism seat, wherein at least one cutter body is a movable cutter body in guide movement fit with the mechanism seat, the guide movement direction of the movable cutter body is consistent with the guide movement direction of the cable locating sleeve relative to the mechanism seat, and steel core evasion grooves used for evading the corresponding steel core are formed in the cutting edges of the fixed cutter body and the movable cutter body. The wire stripping tool provided by the invention solves the problem that a conducting wire or the wire stripping tool needs to be rotated, resulting in complex wire stripping operation in the prior art.
Owner:HENAN POWER TRANSMISSION & TRANSFORMATION CONSTR CO LTD +2

Punching device for paperboard

The invention discloses a punching device for paperboard, belongs to the technical field of paper punching devices and aims to solve the problem that waste chips generated when the paperboard is punched in an existing way cannot be completely separated from the paperboard. The punching device comprises a workbench, wherein a plurality of receding holes penetrate through the workbench, and a plurality of punching needles are arranged above the workbench; a reinforcing rib is arranged at the lower end of any punching needle; a sleeve is arranged in any receding hole; spiral guide grooves matchedwith the reinforcing ribs are formed in the inner wall of the sleeves in the height direction; the upper ends of the sleeves extend out of the receding holes to be connected with a plurality of blades; a storage groove is formed in the middle of each receding hole; positioning blocks are symmetrically connected to the outer wall of the sleeves; positioning columns are arranged on two sides of anypositioning block, and the positioning columns are sleeved with torsion springs; one end of each torsion spring is connected with the corresponding positioning block, and the other end of each torsion spring is connected with the inner wall of the corresponding storage groove; and a plurality of chip removal grooves penetrate through the periphery of any receding hole.
Owner:武威福民汇科技开发有限公司

Push-condensing integrated high-resolution space optical load ultra-light carbon fiber truss support structure

The invention relates to a push-condensing integrated high-resolution space optical load ultra-light carbon fiber truss support structure. The structure comprises an adjusting gasket, a secondary lenschamber, a truss rod, a metal embedded part and a support ring. A boss at the upper end of the adjusting gasket is an installation plane of a secondary mirror component, and a boss at the lower end of the metal embedded part is an installation plane of a truss and a primary mirror component. The adjusting gasket, the secondary lens chamber and the metal embedded part are made of titanium alloy materials, and the truss rod and the support ring are made of carbon fiber composite materials. The cross section of the truss rod is concentric-square-shaped, and the cross section of the support ringis concave-shaped. The truss support structure is less than 2.2 kg in total mass and is 1/3-1/2 times of the mass of a traditional metal truss. The truss support structure is simple, light in weight,good in strength, rigidity, structural stability and other index characteristics, can resist the influence of a complex mechanical environment on a space optical load in the transmitting process, ensures the position relation among optical elements, and meets the requirement of the push-condensing integrated high-resolution space optical load on the support structure.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Steel plastic composite pipe for greenhouse framework and production method thereof

The invention discloses a steel plastic composite pipe for a greenhouse framework and a production method thereof. The steel plastic composite pipe comprises an outer-layer plastic pipe, an intermediate-layer steel pipe and an inner-layer plastic pipe which are sequentially sleeved together from outside to inside; a supporting device for an inner pipe and an outer pipe is arranged on the intermediate-layer steel pipe, wherein the outer end part of the supporting device is supported against the inner wall of the outer-layer plastic pipe; the inner end part of the supporting device is supported against the outer wall of the inner-layer plastic pipe; filler for fastening the outer-layer plastic pipe, the intermediate-layer steel pipe and the inner-layer plastic pipe together is filled between the outer-layer plastic pipe and the inner-layer plastic pipe; the inner pipe and the outer pipe are plastic pipes; filler is poured between the inner pipe and the outer pipe and is used for fastening the inner pipe, an intermediate pipe and the outer pipe together; the relative position relation among the inner pipe, the intermediate pipe and the outer pipe is ensured by using the supporting device between the inner pipe and the outer pipe; the steel pipe is positioned between the inner pipe and the outer pipe and is free from contact with air, thus the steel pipe can be prevented from being corroded by acid and alkali; in addition, the rigidity of the composite pipe can be ensured by using the steel pipe; and the composite pipe has the advantages of strong corrosion resistance, high rigidity and long service life.
Owner:WEIFANG TAIWEI AGRI TECH

Non-contact precise tool setting gauge of ultra-precise diamond turning tool and tool setting method

The invention relates to a non-contact precise tool setting gauge of an ultra-precise diamond turning tool and a tool setting method. The tool setting gauge comprises a supporting ring body, lenses inthe X direction and the Y direction, CCDs and a lighting source in the X direction. The lens in the X direction and the CCD of the lens in the X direction are arranged at the position, correspondingto the X-axis direction of the lathe coordinates, of the supporting ring body, the lens in the Y direction and the CCD of the lens in the Y direction are arranged at the position, corresponding to theY-axis direction of the lathe coordinates, of the supporting ring body, the lenses in the X direction and the Y direction are located on the inner side of the supporting ring body, the CCDs in the Xdirection and the Y direction are located on the outer side of the supporting ring body, and the lighting source is arranged at the position, facing the lens in the X direction, of the inner side of the supporting ring body. The tool setting gauge and the tool setting method thereof replace a traditional trial cutting method, ultra-precise machining tool high-precision optical online detection isachieved, the problems that an ultra-precise machining tool is long in position adjusting period, and tool wear is hard to avoid are solved, machining efficiency is greatly improved, the tool is freeof wear, and the wide application prospects and the large popularization value are achieved.
Owner:TIANJIN UNIV OF SCI & TECH

Dual-mode multi-beam electronic gun for dual-mode traveling wave tube and method for controlling dual-mode multi-beam electronic gun

The invention discloses a dual-mode multi-beam electronic gun for a dual-mode traveling wave tube and a method for controlling the dual-mode multi-beam electronic gun. The dual-mode multi-beam electronic gun comprises a cathode, a shade gate, an internal grid, an external grid and an anode, which are arranged in sequence, wherein the cathode comprises a cathode molybdenum tube, the inside of which is divided into two parts along the axis of the cathode molybdenum tube; the two parts are separated by insulating ceramic; a cathode sponge body is mounted in one part, and a filament filling and sealing insulator is mounted in the other part and is internally provided with a filament; the end face of the cathode molybdenum tube is provided with a plurality of holes; the internal grid controls the electronic beams in partial holes, and the external grid controls the electronic beams in the rest holes so as to implement dual-mode operation. According to the dual-mode multi-beam electronic gun and the method, a high-mode operation state and a low-mode operation state can be provided, and the control voltage is consistent, so that the electronic beams in two modes can be focused by the same magnetic field.
Owner:HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE

Optical device coupling device and coupling method

The invention discloses an optical device coupling device and a coupling method. The coupling device comprises a coupling base, a top pressing assembly, a side pressing assembly, a soft belt pressurization assembly, a PCB adjusting assembly and an electrifying PCB, wherein the top pressing assembly, the side pressing assembly, the soft belt pressurizing assembly and the PCB adjusting assembly areconnected with the coupling base, the electrifying PCB is arranged on the PCB adjusting assembly, the top pressing assembly and the side pressing assembly are used for positioning the main body part of the optical device, and the PCB adjusting assembly and the soft belt pressurizing assembly are used for connecting the soft belt of the optical device with the electrifying PCB. When the optical device and an adapter are coupled for welding, a multi-dimensional fine adjustment frame is not needed, the top pressing assembly and the side pressing assembly of the optical device coupling device areadjusted to position the optical device, meanwhile, the relative position relation between the optical device and the adapter is ensured, the soft belt pressurizing assembly and the PCB adjusting assembly are adjusted to enable the soft belt of the optical device and the electrifying PCB to be electrified smoothly, so that the coupling efficiency and the coupling quality of the optical device andthe adapter are improved.
Owner:GUANGXUN SCI & TECH WUHAN

Cylindrical thin-walled workpiece machining and forming tool and method

The invention discloses a cylindrical thin-walled workpiece machining and forming tool and method. The method comprises the steps of dividing a to-be-machined cylindrical thin-walled workpiece into aplurality of circular ring structures, accordingly machining each circular ring structure, assembling all machined circular ring structures together, carrying out vacuum electron beam welding so as toobtain a combined component, carrying out vacuum annealing and finish machining on the combined component to obtain the final cylindrical thin-wall workpiece. The machining tool comprises an inner-surface machining tool body, an outer-surface machining tool body and an assembling and welding tool body, the inner-surface machining tool body is used for clamping a circular ring structure when the inner surface of the circular ring structure is machined, the outer-surface machining tool body is used for clamping the circular ring structure when the outer surface of the circular ring structure ismachined, and the assembling and welding tool is used for assembling all the cylinders together when all the circular ring structures are welded into the combined component. According to the tool andmethod, the deformation of the cylindrical thin-walled workpiece in the machining process can be improved and controlled, and the machining precision is guaranteed.
Owner:SHAANXI HEYE SPECIAL STEEL TOOL

Efficient seamless solar battery assembly series welding method

The invention relates to an efficient seamless solar battery assembly series welding method. The method is characterized in that a copper strip raw material is pressed into a long-strip-shaped special-shaped solder strip with a plurality of circulating units through a solder strip wiredrawing and coating device; the solder strip is divided into special-shaped solder strip sections of a single circulating unit through a solder strip roll-off device; scaling powder is uniformly coated on a surface of the solder strip through a solder strip coating device; the special-shaped solder strip sectionsare moved to a solder strip jig disc and arranged in the solder strip jig disc according to a battery design pattern, and solder strip disc units are formed after the solder strip jig disc is filledwith the special-shaped solder strip sections; the solder strip disc units are moved to a battery piece stacking transmission line; battery pieces are moved to the battery piece stacking transmissionline; the solder strip disc units and the battery pieces are stacked in a staggered manner to form a preformed battery string; the battery pieces are transmitted to a heating welding device through the battery piece stacking transmission line, and the special-shaped solder strip sections are fully and uniformly welded in the preformed battery string with the battery pieces through temperature heating to form a formed battery string. The method is advantaged in that special-shaped solder strip connection can reduce a connection interval of the battery pieces and improve the power and the lightabsorption effect of a battery assembly.
Owner:江阴德龙能源设备有限公司

Registration method based on datum constraint and allowance constraint of cylindrical surface

The invention discloses a registration method based on a datum constraint and an allowance constraint of a cylindrical surface, comprising the following steps of S1, selecting a theoretical cylindrical surface datum according to the cylindrical surface; S2, respectively detecting a to-be-machined surface and a reference portion of a part; S3, fitting cylindrical surface detection points to obtainthe fitted cylindrical surface datum, moving the theoretical cylindrical datum to the fitted cylindrical surface datum to obtain a first rotation matrix R1 and a first translation vector T1, and transforming to-be-machined surface detection points according to the first rotation matrix R1 and the first translation vector T1 to obtain theoretical machining points; S4, establishing a local coordinate system, then establishing a registration model under the local coordinate system. limiting the freedom of motion through the local coordinate system, controlling the machining allowance of the to-be-machined surface through the allowance constraint, and solving the registration model; and S5, converting a registration result calculated in the local coordinate system into a global coordinate system and outputting a final registration result. The registration method is applied to the field of machining.
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST

Method for machining positioning welding clamp

The invention belongs to the field of machining, and provides a method for machining a positioning welding clamp. The machining method includes the steps that firstly, a bottom plate used for connecting three brackets and two positioning pin mechanisms is machined, and position lines of the brackets and the positioning pin mechanisms are drawn through a numerically-controlled needle; secondly, after single-piece machining and welding are conducted on the brackets and the positioning pin mechanisms, internal force is removed through annealing, the bottom faces of the brackets and the positioning pin mechanisms are milled to be flat through a milling machine, and it is ensured that the brackets and the positioning pin mechanisms are attached to the bottom plate; and thirdly, the whole bottom plate, the whole brackets and the whole positioning pin mechanisms are machined, the bottom plate, the brackets and the positioning pin mechanisms are measured to be qualified after numerically-controlled machining, and inspection is conducted after bench workers polish numerically-controlled machining moulding faces. The machining method has the beneficial effects that due to the adoption of the machining method, the relative position relationship of the three brackets and the positioning pin mechanisms can be ensured, and the tolerance requirement of the positioning and welding clamp can be ensured.
Owner:SHENYANG AIRCRAFT CORP
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