75results about How to "Guaranteed collimation" patented technology

The invention discloses a near-field plume mass-spectroscopic diagnostic E*B probe based on the Faraday cup and belongs to the technical field of plasma mass-spectroscopic diagnosis. The probe mainly applied to measuring near-field plumes of an ion thruster and of a Hall thruster comprises a central frame, ferrite permanent magnets, a flat electrode plate, an electrode plate holder, a collimator tube, a drift tube, a Faraday cup, six carbon steel shells and an anti-sputtering heat-insulating layer. According to the connectional relation, the central frame is used as a core part, the ferrite permanent magnets are distributed on upper and lower surfaces of the central frame, the electrode plate is fixed in the central frame, and an orthogonal electromagnetic field area is formed. The six carbon steel shells are used for packaging, and the front ends of the shells are coated with an anti-sputtering heat-insulating layer. The collimator tube of stainless steel and the drift tube are fitly fixed to the centers of two ends of the central frame through shaft holes. Ions different in valence are screened by adjusting voltage among the electrode plates, univalent and bivalent ion currents are acquired with the Faraday cup of aluminum, and the ratio of near-field plum bivalent ions is acquired by analytical computing.

The invention relates to the technical field of artificial intelligence and particularly relates to a laser radar main module and a laser radar. The laser radar main module comprises a transmitting module, a receiving module, an optoelectronic circuit board, a main control board and a structural lens barrel. The transmitting module comprises a transmitting light source, a transmitting circuit anda transmitting lens, the receiving module comprises a receiving circuit, a photoelectric sensor and a receiving lens, the transmitting circuit, the receiving circuit and the photoelectric sensor are arranged on the photoelectric circuit board, the transmitting lens and the receiving lens are arranged in the structural lens barrel, and the structural lens barrel is connected to the main control board and the photoelectric circuit board. According to the invention, by directly setting the transmitting light source, the transmitting lens and the receiving lens in the structural lens barrel, the problems of low one-time success rate and low production efficiency of products in a traditional installation process are solved, at the same time, the measurement precision and stability of the products are improved at the same time, the difficulty of assembly is reduced, and the mass production of the products is facilitated.

The invention belongs to the field of plastic processing, and relates to a plastic deformation method for achieving structural performance optimization of an inner surface of a straight pipe. High-speed shearing deformation is carried out on the inner surface of the metal straight pipe in a point contact mode, so that the structural performance of the inner surface of the pipe fitting is optimized. The plastic deformation method for achieving the structural performance optimization of the inner surface of the straight pipe has the following technical advantages that the point contact is introduced into the high-speed shearing plastic deformation, and effective cooling in straight pipe processing is achieved; the uniformity and the collimation degree of the wall thickness is effectively guaranteed before and after straight pipe processing; a 500-micron plastic deformation surface layer is formed on the inner surface of the straight pipe, so that the hardness and the strength of the inner surface of the straight pipe are improved by 5-20 times, and the surface quality is improved until the roughness Ra is 0.02-0.2; and the chemical activity of the inner surface of the straight pipe is greatly improved, and the temperature of chemical heat treatment such as nitrizing and carburizing is reduced by 200 DEG C or above.

The present invention provides a mounting bracket for a coaxial optical system, and a coaxial optical system with the same. The mounting bracket comprises: a base body mounted on an optical platform of the coaxial optical system, wherein the base body has a positioning hole for mounting a positioning rod; a clamping assembly which is arranged on the positioning hole and is configured to fix the positioning rod; and a mounting plate arranged on the base body, wherein the mounting plate has a mounting hole for mounting an optical component. The clamping assembly is configured to position, clamp and fix the positioning rod to ensure a unique positional relationship between the positioning rod and the mounting bracket; and a plurality of mounting brackets can be connected and positioned by using the positioning rod to ensure collimation, and the coaxial precision of the mounting bracket can be improved, so that the mounting precision of the coaxial optical system is improved, the calibration accuracy of the optical path is improved, the stability of the optical path is improved, and the calibration operation of the coaxial optical system is facilitated.

The invention provides a discharge device for generating low-temperature and low-pressure plasmas by adopting a coaxial double-coil radio frequency driving gas discharge mode. According to the invention, two spiral coils and a shielding layer form a double-coil radio frequency resonant cavity to excite gas in a gas conduit to generate plasma discharge. Parameters of the inner solenoid coil and the outer solenoid coil are different, radio frequency signals with different frequencies can be adopted to drive plasma to discharge at the same time, decoupling independent control is carried out on electron energy and electron density, and the metastable state atom excitation efficiency is improved. The plasma discharge device is provided with the inner solenoid coil and the outer solenoid coil, when one solenoid coil fails, the other solenoid coil can work independently to drive plasma to discharge, the reliability and robustness of the discharge device can be improved, and the number of vacuum maintenance times for disassembly and assembly is reduced.

The invention relates to the technical field of additive manufacturing, in particular to a preparation method of asymmetrically infiltrated high-collimation high-surface-viscosity fabric prepreg. In the preparation method, firstly, a continuous resin adhesive film is prepared, after a fabric is led into a prepreg compression roller gap, the fabric unwinding tension is adjusted and optimized by utilizing deviation angle feedback of an infrared tracing line and a fabric weft tracing line, so that the collimation of the fabric prepreg is ensured; the method comprises the following steps: firstly, preparing a fabric prepreg, further ensuring the quality of the fabric prepreg and enhancing the strength of the fabric prepreg, then introducing a resin adhesive film to the upper surface of the fabric, and simultaneously introducing release paper to the lower surface of the fabric, so that a combination of the resin adhesive film, the fabric and the release paper sequentially passes through a heating plate and a hot pressing roller to finish heating and hot pressing, thereby realizing preparation of the fabric prepreg by coating the adhesive film on a single surface. The non-infiltration area on the lower surface of the fabric prepreg is used for vacuum air guide, the requirement of a prepreg / vacuum bag forming process for the high air guide performance of the prepreg is met, and low-cost manufacturing of a high-performance composite material is achieved.

The invention discloses a seabed type static cone penetrating device and a control method thereof. The seabed type static cone penetrating device comprises a penetrating mechanism, a winding mechanism and a flexible tooth-shaped post, wherein the penetrating mechanism comprises an aligning tube and a gear transmission mechanism; the winding mechanism comprises a winch and a guide plate; the flexible tooth-shaped post comprises a steel cable and a plurality of tooth-shaped post sections which are in sliding sleeve on the steel cable and are connected in series; one end of the flexible tooth-shaped post is in winding connection with a winch; the other end of the flexible tooth-shaped post gets across a guide disc and then passes through the aligning tube; adjacent tooth-shaped post sections positioned in the aligning tube are in splicing connection; the two sides of each tooth-shaped post section are engaged with the gear transmission mechanism; the flexible tooth-shaped post has a straight state and a bent state, is convenient to operate, and is high in stability; the tooth-shaped post sections are connected in series automatically, and are not additionally connected, so that seabed static penetration under a deep-layer condition is conveniently realized; and through a dual-engagement structure that the gear transmission mechanism is engaged with the two sides of each tooth-shaped post section, collimation degree and pressure needed for penetrating are guaranteed.

The invention discloses a sample preparation method and device for measuring a high temperature thermal diffusion coefficient of a fiber. The sample preparation method for measuring the high temperature thermal diffusion coefficient of the fiber comprises the following steps: determining the fiber linear density [Rho]<L>; wrapping the fiber around a designed winding mold or cutting into small pieces to ensure the degree of collimation of the fiber during subsequent filling; filling the fiber into a set of steel ring molds designed to overcome high temperatures, so that the interior of the steel ring molds is filled with fibers; cutting the fibers among steel ring molds, and polishing one side the fiber-filled steel ring molds with a grinding and polishing machine; using a fixture designedto match the outer diameter of the steel ring mold to clamp the steel ring mold and polish the other side, at the same time, the polished side can be kept flat, so as to ensure the parallelism of thefiber sample; and measuring the thermal diffusion coefficient [Alpha]<T> of the sample after the polishing at high temperature. The invention also designs the corresponding winding mold, steel ring molds and matching fixture, which can measure the thermal diffusion coefficient of the fiber at high temperature; the thermal conductivity can be obtained by the calculation through relevant formulas toaccurately reflect the thermal conductivity of the fiber; the heat loss during the measurement of the thermal diffusion coefficient is small; and the dispersibility of the measurement results is small.