32results about How to "Guaranteed structural accuracy" patented technology

The invention provides a fixator injection mold. The fixator injection mold comprises a fixed mold fixing plate, a stripper plate, a fixed mold plate, a fixed mold core, a movable mold plate, a movable mold core, an ejector pin panel, an ejector pin bottom plate and a movable mold fixing bottom plate which are sequentially arranged from top to bottom, wherein a plurality of inserts are arranged between the fixed mold plate and the movable mold plate, the movable mold core is provided with four mold cavities, the four mold cavities are divided into two rows and are vertically arranged in pairs, the two rows of mold cavities are arranged in a staggered mode, and the movable mold core and the fixed mold core are buckled to form a forming cavity. A first inclined guide column located on one side of the fixed mold core and a second inclined guide column opposite to the first inclined guide column are arranged in the fixed mold plate, and a third inclined guide column and a fourth inclined guide column are arranged in the fixed mold core. According to the fixator injection mold, the fixed mold plate and the movable mold plate are each provided with four mold core grooves, four injection molding parts can be produced at the same time, and the production efficiency is high; and the four inclined guide columns are arranged, so that demolding is more efficient.

The invention relates to the technical field of vacuum self-consuming furnaces, in particular to a vacuum self-consuming furnace crystallizer welded cylinder producing process and a welding assistive device, and solves the problems that currently a cylinder is formed by spinning or forging, the process is complicated, production cost is high and price is high. The crystallizer cylinder is formed in a welded manner by the aid of the welding assistive device, the technical prejudice that the cylinder can only be formed by spinning or forging in the prior art is overcome, indicators of the produced cylinder meet the requirements of the vacuum self-consuming furnace during smelting, on the basis of guaranteeing structural strength and accuracy of a crystallizer, producing difficulty is reduced effectively, production cost of the crystallizer is reduced, and market competitiveness of equipment is improved.

The invention belongs to the technical field of stamping processing, and relates to a continuous forming method for thin terminals. The steps include: ①punching positioning holes, ②end pre-cutting, ③end chamfering, ④end finishing, ⑤edge trimming, ⑥blanking; step② Based on the positioning hole, multiple pre-cut holes are cut in the product forming area. The pre-cut holes include side pre-cut holes near the side of the metal strip. The outline of the side pre-cut holes includes several side-by-side raised structures , the raised height of the raised structure does not exceed 2mm, and the raised structure is chamfered and refined before trimming. This method can preform the chamfered part at both ends of the terminal with a thinner size, and then punch the rest of the terminal contour. The process is continuous and ensures the structural accuracy of the terminal chamfer, which meets the customer's precision. Require.

The invention discloses an assembling and welding tool for ceramic windows and an application method for the assembling and welding tool. The assembling and welding tool comprises a main tool mold, an inner cavity support structure and barriers. The periphery of a body of a ceramic window is fixed by the aid of the main tool mold, the upper end and the lower end of the body of the ceramic window are fixed by the aid of the inner cavity support structure, and a cooling water connector is fixed by the aid of the barriers. The application method includes steps of combining components of the main tool mold for assembling parts of the ceramic window with one another; assembling the inner cavity support structure and the barriers; integrally welding the ceramic window at one step; and disassembling the main tool mold, the inner cavity structure and the barriers to obtain a finished product. The assembling and welding tool and the application method have the advantages that three tool units with high concentricity and parallelism form the main tool mold to constrain the body of the ceramic window; the size of a waveguide inner cavity is fixed by the aid of the inner cavity support structure capable of moving in front, rear, left and right directions, and the waveguide inner cavity with the fixed size is prevented from deforming during welding; the cooling water connector is positioned by the barriers, and screws on the barriers are adjusted to be abutted to the water connector, so that the water connector cannot move; and owing to the method, all the parts are assembled at one step and are welded and molded at one step, so that the design precision of the ceramic window is effectively guaranteed, the production efficiency is greatly improved, and the ceramic window manufacturing cost is reduced.

The invention discloses an assembled type garage structure system based on precast piles and a method. The assembled type garage structure system comprises the precast piles, horizontal supporting beams and independent foundations, wherein vertical load bearing parts of a garage structure are formed by the precast piles, and guide rails are arranged on the outer surfaces of the precast piles; the horizontal supporting beams comprise ground beams and superposed beams, the ground beams are arranged around the precast piles by one circle so as to support a bottom plate of a garage, and the superposed beams are arranged around the precast piles so as to support a garage floor plate or a garage top panel; the independent foundations are connected with the precast piles and the precast ground beams through designed grooves. All the structure members such as the precast piles and the independent foundations are machined in factories and can be assembled for construction, so that emission of pollutants at a construction site is reduced; through the guide rails and cooperation of the independent foundations and mounting flanges, the perpendicularity of the precast piles is guaranteed, the structure bearing capacity is well guaranteed, and structure precision is guaranteed; the precast piles and garage columns are integrated, so that not only is energy saved, but also construction efficiency of the underground garage is greatly improved.

The invention provides an electronic expansion valve. The electronic expansion valve includes a valve seat, a valve port seat, a nut assembly and a valve needle. The valve port seat is fixedly arranged on the valve seat, and a guide sleeve is arranged between the valve seat and the nut assembly. Set in the guide sleeve, the valve port seat and the guide sleeve are concentrically socketed, and the end of the valve port seat close to the guide sleeve is radially provided with a first flow channel that connects the valve cavity of the valve seat with the valve port of the valve port seat, and the valve port seat and the guide sleeve The matching length is greater than the height from the bottom of the first flow channel of the valve port seat to the bottom axial stop surface outside the valve port seat corresponding to the guide sleeve. According to the electronic expansion valve of the present invention, it can solve the problems in the prior art that the axial positioning of the valve seat to the guide sleeve is insufficient, the deflection of the guide sleeve is prone to occur, and the structural accuracy of the electronic expansion valve is affected.

The invention discloses a resin-based composite material battery box laying mold for new energy vehicles. The mold includes an inner mold, an outer mold and a fastening device. The inner mold includes an inner flanging edge, an inner panel-front, an inner panel-middle, an inner panel-back, a center panel of the inner bottom surface and four corners of the inner bottom surface. The outer mold includes outer plate-front, outer plate-middle, outer plate-rear and outer bottom surface. The fastening device includes a side plate fastening device and an upper and lower fastening device, which are composed of bolts, nuts, side panels and upper and lower panels. The internal and external combination mold designed by the invention can fully guarantee the geometric accuracy and structural accuracy of the battery box; the detachable mold designed by the invention well overcomes the difficult problem of complex demoulding of resin-based composite materials; the openable mold designed by the invention The outer mold overcomes the influence of the concave-convex plane formed by the reinforcement structure of the battery box on the installation of the outer mold.

The invention provides a magnetron cathode assembly assembly process, including the following steps: S1: pre-assembly between pre-assembled parts and molds; S2: welding, demoulding; S3: leak detection; S4: installation of filaments, upper ends cap, and weld and fix the filament and upper end cap; S5: filament carbonization; S6: resistance detection, titanium powder coating; wherein, the pre-installed parts include lower end cap, long lead wire, reflector, K side tube, solder plate, support Body, terminal assembly; the mold includes an upper mold and a lower mold. The upper mold and the lower mold are set so that the cathode assembly will not be deformed during welding, thereby ensuring the structural accuracy of the cathode assembly, and then through the setting of the upper and lower fixtures of the leak detector, the cathode assembly can be inspected When leaking, it has higher sensitivity and detection accuracy. The cathode assembly assembly process formed by the above mold is used to ensure the assembly accuracy of the magnetron cathode assembly and improve the product qualification rate.