111results about How to "Meet the process requirements" patented technology

The present invention provides an FDY oil agent that can be directly oiled with crude oil and a preparation method thereof, the preparation method comprising: putting a sizing agent, an antistatic agent, an emulsifier, a phase change wear-resistant agent and a smoothing agent into a reactor; heating the reactor to 40°C to 60°C, turning on the stirring device of the reactor, and continuously stirring for 20min to 40min under heat preservation conditions to obtain the FDY oil agent; wherein the phase change wear-resistant agent is prepared by the following steps: using a raw material including paraffin to prepare an oil phase; using a raw material including ethyl orthosilicate to prepare an aqueous phase; using a raw material including polyol and isophorone diisocyanate, through an oil-in-water emulsification system, to prepare an emulsion; mixing the emulsion, the oil phase and the aqueous phase to prepare the phase change wear-resistant agent. The FDY oil agent of the present invention has good high temperature resistance and wear resistance.

The invention discloses a device and method for machining a spiral groove in a cavity, and relates to the technical field of spiral groove machining. The device comprises a box body, a supporting frame is fixedly connected to the top of the box body, a driving shaft is rotationally connected to the supporting frame, a machining assembly used for conducting spiral groove machining on a workpiece cavity is arranged at the bottom of the driving shaft, and a sleeve is rotationally connected to the top of the box body; the sleeve is arranged on the driving shaft in a sleeving mode, and a control assembly installed on the supporting frame is arranged on one side of the sleeve. According to the device and method for machining the spiral groove in the cavity, a series of mechanical transmission parts such as a rotating rod, a linkage rod and a sliding frame are driven by a control motor, intermittent downward movement of assemblies such as a trapezoidal block, a transverse rod, a movable plate and a working motor is achieved, and the distance and depth of the spiral groove are adjusted; the precise control mode ensures that the length of the spiral groove in the cavity of the workpiece can be adjusted as required, so that different workpieces and different machining requirements are met.

The utility model discloses an automatic jewelry spring buckle assembling machine, and relates to the technical field of jewelry spring buckle machining equipment. A buckle body feeding device, a spring feeding device, a shifting piece blanking feeding device, a good product detecting device and a spring buckle discharging device are sequentially arranged on the outer side of the assembling rotary table. The assembling rotary table is used for fixing or releasing the buckle bodies and driving the buckle bodies to move in sequence. The buckle body feeding device is used for conveying buckle bodies and pushing the buckle bodies to the assembling rotary table. The spring feeding device is used for conveying springs and pushing the springs into the buckle bodies. The shifting piece blanking and feeding device is used for forming shifting pieces and assembling the shifting pieces to the buckle body; the non-defective product detection device is used for defining the current spring buckle as a non-defective product spring buckle or a defective product spring buckle; and the spring buckle discharging device is used for classifying and receiving the non-defective spring buckles or the defective spring buckles. The spring buckle assembling machine can automatically complete assembling of spring buckles, replaces a traditional manual participation mode, improves assembling efficiency and reduces labor cost.

The embodiment of the invention discloses system control equipment for a methanation reaction system. The equipment comprises a methanation reaction system, a distributed control system and an advanced control system, the distributed control system is used for collecting the real-time flow value of the raw material gas passing through the flow control main valve and the flow control slave valve, the temperature value of the first gas passing through the first reactor and the temperature value of the second gas passing through the second reactor; sending the feed gas real-time flow value, the first gas temperature value and the second gas temperature value to an advanced control system; and the advanced control system is used for determining the valve opening degrees of the flow control main valve and the flow control slave valve according to the real-time flow value of the raw material gas, determining the valve opening degree of the distribution valve according to the second gas temperature value, and determining the valve opening degrees of the anti-surge valve and the guide vane valve according to the first gas temperature value. By applying the scheme provided by the embodiment of the invention, the methanation reaction system can be accurately controlled, so that the quality of finished gas is ensured to meet the process requirements.

The utility model relates to the technical field of electric iron towers, in particular to an electric iron tower steel pipe machining and positioning device. According to the technical scheme, the device comprises an operation table, a first lifting mechanism, a clamping and positioning mechanism and a second lifting mechanism, the clamping and positioning mechanism comprises a mounting base, a conical telescopic rod, a motor, a driving wheel, clamping rods and a guide wheel, the conical telescopic rod is mounted in the mounting base through a sliding rail, and two sets of opposite clamping rods are mounted in the mounting base through rotating shafts; guide wheels are installed at the two ends of the clamping rod through shaft bolts. The movable conical telescopic rod moves downwards automatically under the pressure of a steel pipe, the downwards-moving conical telescopic rod extrudes the guide wheels at the bottom of the clamping rod through the inclined faces on the two sides, the clamping rod is turned over to clamp and position the two sides of the pipeline, the function of automatic clamping and positioning through the self weight of the pipeline is achieved, the pipeline clamping and positioning efficiency is improved, and the labor intensity of workers is lowered. And meanwhile, the clamping rods are designed to be turnable so as to adapt to steel pipes with different diameters.

The invention relates to the technical field of metal materials, in particular to a high-strength steel material for mine roadway support and a preparation method thereof, and the high-strength steel material comprises the following components in percentage by weight: 0.04 to 0.10 percent of C, 0.15 to 0.45 percent of Si, 1.20 to 1.80 percent of Mn, 0.20 to 0.50 percent of Cu, 0.15 to 0.40 percent of Cr, 0.10 to 0.35 percent of Ni, 0.08 to 0.25 percent of Mo, 0.015 to 0.045 percent of Nb, 0.03 to 0.08 percent of V, 0.008 to 0.025 percent of Ti, 0.005 to 0.020 percent of RE and the balance of Fe. The preparation method comprises the steps of smelting and refining, continuous casting, heating, rough rolling, finish rolling, segmented controlled cooling and medium-temperature tempering (450-550 DEG C), R is larger than or equal to 620 MPa, A is larger than or equal to 18%, the yield ratio is smaller than or equal to 0.90, KV at 0 DEG C is larger than or equal to 100 J, and the deep-well high-stress roadway support is suitable for deep-well high-stress roadway support.

This invention provides a multi-directional air intake silicon carbide coating chemical vapor deposition (CVD) device, belonging to the technical field of CVD equipment. It includes a CVD device body, a gas delivery system, and a control system. The CVD device body has a reaction chamber with gas inlets on its sidewalls, top, and bottom. The gas delivery system has a gas output end, which is connected to the gas inlets on the sidewalls and top of the reaction chamber via pipelines, and is used to introduce gas into the reaction chamber. The control system is connected to the gas delivery system and is used to control the gas flow rate and pressure in the multiple pipelines. By providing gas inlets at the top, bottom, and sidewalls of the reaction chamber and controlling the gas flow rate and pressure in the pipelines, this invention can control the gas flow into the reaction chamber from different directions, achieving multi-directional air intake and ensuring a uniform silicon carbide coating thickness distribution to meet processing requirements.

The utility model discloses a kind of worm processing comprehensive machine tools, including bed, the upper surface both sides of bed are fixedly installed with two symmetrical distribution primary bearing seat, one number screw rod is rotatably connected between two primary bearing seats, the outer thread of one number screw rod is connected with horizontal slide, the output shaft of one number motor is fixedly connected to one end of one number screw rod, symmetrically distributed secondary bearing seat is fixedly installed in the front and back two ends of horizontal slide, two secondary bearing seats are rotatably connected with two number screw rod, two number screw rod and one number screw rod are perpendicularly arranged between each other, the outer thread of two number screw rod is connected with longitudinal slide, the output shaft of two number motor is fixedly connected to one end of two number screw rod, equipment seat is fixedly installed on the upper surface of longitudinal slide, the machine tool of the utility model whole structure is simple, floor area is small, manufacturing difficulty is low, effectively reduce the enterprise's early purchase and later use cost, with good use economy, suitable for small and micro manufacturing enterprises development use.

This invention relates to a high-power, low-loss Li-based microwave ferrite for LTCC and its preparation method, belonging to the field of electronic ceramics technology. The ferrite, based on its respective standard components, contains the following content: Li₂CO₃ 11.80–12.24 mol%, ZnO 19.87–20.41 mol%, TiO₂ 10.78–11.08 mol%, Mn₃O₄ 0.39–2.65 mol%, Co₃O₄ 0.04–0.58 mol%, Fe₂O₃ 54.70–56.18 mol%, and Bi₂O₃ 0.09 mol%. This invention introduces high-valence Mn ions into the Li-based microwave ferrite, altering the ferrite grain size distribution, particularly increasing the proportion of fine grains, thus improving the spin linewidth. Based on grain refinement, the introduction of an appropriate amount of Co ions with rapid relaxation characteristics further enhances the ferrite's spin linewidth.

The application relates to the technical field of plastic intelligent manufacturing, and discloses a machine vision driven plastic master batch feeding and cleaning parameter intelligent regulation and control system. The system comprises the following: an image acquisition and feature extraction module which, based on the equipment running state, identifies and extracts elements such as feeding speed and cleaning flow, maps to a preset parameter field and establishes an associated identifier, and forms a standardized feeding and cleaning data unit. A parameter matching and regulation rule generation module searches a database to match regulation rule conditions, calculates a parameter regulation complexity factor, compares parameters with constraint values, and generates a single parameter matching state judgment. A multi-working-condition correlation modeling module finds different working-condition shared entities, calculates a cross-working-condition correlation closeness index, and constructs a multi-working-condition correlation graph. An abnormal state identification and parameter correction module combines the associated working-condition judgment to calculate a risk score and generates a comprehensive regulation risk prompt. The system realizes intelligent regulation and control and abnormal identification of plastic master batch feeding and cleaning parameters.

This utility model discloses a high-efficiency ink thinner adding device, including a frame, a support platform, a first hose, and a second hose. An ink turnover box is located on the top of the frame, and a support plate is located on the front side of the ink turnover box. A lifting cylinder is installed in the middle of the support plate, with the piston rod of the lifting cylinder pointing downwards and connected to a lifting plate. Several injection rods are evenly spaced laterally on the rear side of the lifting plate. The first hose connects the ink turnover box to the top inlet of the injection rods. Two symmetrical fixing plates are located on the rear side of the frame, and a thinner transfer pipe is connected to the fixing plates. The second hose connects the thinner transfer pipe to the side opening of the injection rods. The frame is also connected to a positioning and clamping mechanism. Multiple injection rods can accurately align with the material container to complete the adding and filling process, improving production efficiency and reducing manual labor intensity.

The utility model discloses a riveting press for a transmission shaft with a quick-change connector, and relates to the field of machining and assembling. Comprising a riveting press body, a riveting press working device, a riveting head, a sliding buckle, a limiting column and a pressure sensor. The riveting head is installed below the riveting press working device, the riveting press working device and the riveting head are connected through the sliding buckle, rapid disassembly and assembly of the riveting head are achieved, the limiting column is used for fixing the riveting head, riveting stability is ensured, manual installation errors are reduced, and replacement efficiency is improved. The pressure sensor is arranged below the riveting head, the pressure value in the riveting process can be monitored in real time, the pressure sensor is in linkage with the control box for feedback adjustment, it is ensured that the pressure of each riveting point is consistent, and the riveting quality and the product reliability are improved.

The utility model relates to the technical field of valve core machining, and discloses a precision instrument lathe for a faucet valve core, which comprises a lathe body, a cutter head is arranged on the top surface of the lathe body, a placing block is fixedly connected to the top surface of the cutter head, and a dismounting assembly is arranged on the top surface of the placing block. An infrared positioner is connected to one side of the dismounting assembly in an inserted mode, and a hydraulic rod is fixedly connected to the interior of the placing block. According to the precision instrument lathe for the faucet valve element, through the arrangement of the clamping assembly, when the precision instrument lathe is used, a rotating block is rotated, the rotating block rotates to drive an inserting rod to move, and the inserting rod is pulled out of the interior of a cutter, so that the cutter can be replaced, various machining operations can be achieved on the same lathe, and the machining efficiency is improved. The machining requirements of different parts are met, the universality and flexibility of a machine tool are improved, meanwhile, the phenomenon that a cutter is abraded after being used for a long time can be avoided, and therefore the production quality of the device is improved.

A kind of secondary machine tool centering method of fir type wheel groove of steam turbine rotor, it is related to a kind of rotor centering method, to solve the problem that steam turbine rotor fir type wheel groove secondary machine tool machining cannot be centered.The present application installs shaft on machine tool spindle, moves shaft into wheel groove from wheel groove end face, makes the depth reference position line of shaft coincide with the depth size reference line position of wheel groove;When clearance value L1 is greater than L2, rotate rotor impeller counterclockwise;Conversely, rotate rotor impeller clockwise;If clearance value L1 is greater than L3, machine tool spindle is adjusted upwards along Y axis;Conversely, machine tool spindle is adjusted downwards along Y axis;When clearance value L1, clearance value L2, clearance value L3 and clearance value L4 are equal to theoretical value M;Shaft is taken off from machine tool spindle, wheel groove milling cutter for product machining is installed, product machining is carried out, and centering is completed.The beneficial effect is to realize the centering of rotor wheel groove secondary machine tool.

The utility model provides a full-automatic brucellosis antibody detection workstation. The full-automatic brucellosis antibody detection workstation comprises a cabinet body, a pipettor, a sample frame, a sample tube, a suction head box, an oscillation module, an experiment board, a waste liquid tank, a photographing unit, a disinfectant tank and a reagent tank, the suction head box, the waste liquid tank, the disinfectant tank and the reagent tank are located in the middle, and the suction head box is used for providing suction head consumables; the waste liquid tank is used for recycling waste liquid and sucker consumables, the disinfectant tank is used for providing disinfectant, and the reagent tank is used for providing reagents. According to the multi-region physical sample loading device disclosed by the utility model, sample loading, accurate pipetting, liquid transferring, pore plate filling, reagent loading, uniform mixing and oscillation, reagent extraction, detection system construction and sample photographing can be integrated, and multi-region physical division can be carried out according to the sample loading requirements of an experiment sequence, time and each step; cross contamination of samples is avoided, the high-throughput sample treatment requirement is met, full oscillation and uniform mixing can be realized, the accuracy of a detection result is improved, and the detection efficiency is also greatly improved.

The application discloses an active circuit breaker assembly, a motor controller, an electric assembly and a vehicle. The active circuit breaker assembly comprises a first conductive sheet and an initiating device. A first side of the first conductive sheet is provided with a first gap and a second gap. The first conductive sheet forms a first necking section corresponding to the first gap and a second necking section corresponding to the second gap. The initiating device has a punch for impacting the first necking section and a connecting section, so that the first necking section is fractured, and the second necking section serves as a rotation fulcrum of the connecting section. The size of the first gap in a first direction is greater than the thickness of the first necking section in a third direction, and the first direction, the second direction and the third direction intersect with each other. By optimizing the structural design of the first conductive sheet and cooperating with the impact of the punch on the first necking section and the connecting section, the process requirement of blanking forming is met while ensuring reliable disconnection of the first conductive sheet, the machining process is reduced, and the production cost is reduced.

The present invention relates to the technical field of epoxy resins for electronic circuits, and provides a modified epoxy resin, a preparation method thereof, and an application thereof in halogen-free high-speed copper-clad laminates. The modified epoxy resin provided by the present invention includes material A and material B; the preparation method of material A includes the following steps: mixing a linear phenolic epoxy resin, a reactive flame retardant DOPO, and a catalyst for reaction; mixing the obtained reaction solution with a tetrafunctional glycidyl ether and an organic solvent to obtain material A; the preparation method of material B includes the following steps: mixing a BPA-type benzoxazine resin, dicyandiamide, and an organic solvent to obtain material B. The present invention obtains a modified epoxy resin by combining a plurality of resin systems, and the obtained modified epoxy resin does not contain halides, and is suitable for preparing halogen-free high-speed copper-clad laminates. The copper-clad laminate prepared using the modified epoxy resin of the present invention has lower dielectric loss and lower expansion coefficient, and has good heat resistance and flame retardancy.

The utility model discloses a kind of automobile sunroof guide rail top bending device with adjustable top bending radian, it is related to automobile sunroof guide rail technical field, including workbench, the top of workbench is provided with bending column, the top of workbench is provided with arc slot, guide wheel that can be moved along arc slot is arranged on the workbench, top bending driving component for driving guide wheel to move along arc slot to be used to top bending guide rail is further provided on the workbench, the top bending radian of guide rail is defined, and radian adjusting component is provided on the workbench, the side of bending column is provided with side plate, by starting second motor, the output end of second motor drives first gear to rotate, the rotation of first gear will drive arc rack to slide in arc seat. With the sliding of arc rack in arc seat, the abutment portion of arc rack side will change position accordingly. By changing the position of abutment portion, the accurate adjustment and control to guide rail top bending radian are realized.

This invention relates to the field of machining technology, and discloses a machining method for insert placement and the insert itself. The machining method for insert placement includes the following steps: Step S10, the insert placement blank includes an open area and a closed area. The insert placement blank is clamped onto a CNC machine tool, and the open area of ​​the insert placement blank is CNC machined to obtain a semi-finished insert placement product with a 0.03mm wire EDM machining allowance in the open area. The height of the open area of ​​the semi-finished insert placement product is greater than or equal to 20mm. Step S20, the open and closed areas of the semi-finished insert placement product are wire EDM machined to obtain multiple finished inserts. This invention, by reserving a 0.03mm allowance in CNC machining, is reasonably designed to avoid wire clamping and wire EDM springback problems caused by slow wire cutting, ensuring the surface finish of the product and meeting the machining requirements, while not affecting the wire EDM machining efficiency.

This invention provides a slide rail for a high-precision servo CNC punch press with a double-link toggle mechanism, comprising: a punching table, a punch press body, a punching device, a slider, and a slide groove. The punch press body is disposed on the top of the punching table. Two slide grooves are respectively formed on both sides of the inner cavity wall of the punch press body. A lead screw is rotatably mounted inside the slide groove. The slider is threadedly engaged with the outer surface of the lead screw. The punching device is fixedly connected to the surface of the slider. This invention provides a slide rail for a high-precision servo CNC punch press with a double-link toggle mechanism. By adding rollers to the surface of the punching device and allowing them to slide up and down inside a limiting groove, the double constraint of the lead screw and rollers maintains the accuracy of the punching device's sliding on the slide rail surface. This avoids the wear of the lead screw affecting the up and down movement of the punching device, preventing lateral forces that could affect the punching accuracy, thus meeting the processing requirements of precision parts and improving the practicality of the device.

This utility model provides a wool opening device, belonging to the field of wool processing technology. It includes a material box containing an opening mechanism for processing wool. The opening mechanism includes a feeding component and an opening component. The feeding component feeds wool into the material box, and the opening component is located below it, used to open the wool fibers. The feeding component includes a feeding ramp symmetrically mounted on the top of the material box and a feeding shaft symmetrically mounted above the ramp. Several feeding guide rods are distributed on the feeding shaft. This utility model can shred wool using meshing crushing rollers, avoiding problems such as uneven stress on wool fibers during opening due to improper or inaccurate roller coordination, and potential damage to some wool fibers due to over-opening.

The application provides a packaging substrate and a processing method thereof. The packaging substrate comprises a ceramic substrate, a first build-up structure and a second build-up structure. The ceramic substrate comprises a ceramic plate member having a conductive hole penetrating through the ceramic plate member along the thickness direction of the ceramic plate member, a conductive column is arranged in the conductive hole, one side of the ceramic plate member in the thickness direction is provided with a first conductive layer, and the first conductive layer is electrically connected with one end of the conductive column. The first build-up structure is arranged on the side of the first conductive layer away from the ceramic plate member, the first build-up structure is electrically connected with the first conductive layer, the first build-up structure is formed by an RDL process, and the first build-up structure is used for electrical connection with a chip. The second build-up structure is arranged on the other side of the ceramic plate member in the thickness direction, the second build-up structure is electrically connected with the conductive column, the second build-up structure is formed by an MSAP process, and the second build-up structure is used for electrical connection with a PCB. The packaging substrate of the embodiment of the application has high flatness and can meet the demand of interconnection with a chip with a smaller spacing on the basis of being connected with the PCB.

The utility model provides a clamping jaw for self-leveling inner hole conical surface ring-shaped materials, which structurally comprises an arm fixing flat plate, a double-acting air cylinder is fixedly arranged at the bottom of the arm fixing flat plate, and a pressing plate is fixedly arranged at the bottom of the double-acting air cylinder; the front end of the fixed shaft is movably connected with a pin shaft, the middle of the pin shaft is movably connected with a movable block, the mechanical arm is matched with the arm fixing flat plate to work, the fixed shaft is inserted into the inner hole conical surface of the ring-shaped material, a rubber pad on the movable block abuts against the inner hole conical surface of the ring-shaped material, and the floating guide rail is matched with the pressing plate. The pressing plate is matched with the rubber pad to complete clamping and releasing of the inner hole conical surface ring-shaped material, so that the equipment and a material taking and placing mechanism matched with a mechanical arm are not influenced by different angles of an inner hole of the inner hole conical surface ring-shaped material to smoothly clamp and release; and the inner hole conical surface ring-shaped material is relatively vertical, so that a machine tool spindle can smoothly clamp and process.

A water-cooled plate structure for cooling high-power-density power electronic devices and its design method based on SIMP topology optimization are disclosed. The structure includes a water-cooled plate body with an inlet, an outlet, and a flow channel region. The flow channel region includes an inlet guiding region and a parallel flow channel region. The inlet guiding region contains several double-elliptical guiding structures arranged in a needle-fin array. The parallel flow channel region consists of several dispersed independent flow channels, each corresponding to a heat source region of a chip. This invention, through the coordinated design of the inlet guiding region and the parallel flow channel region, achieves efficient heat dissipation and good temperature uniformity while ensuring low flow resistance, meeting the heat dissipation requirements of high-power electronic devices.

The invention discloses battery-grade lithium carbonate as well as a preparation method and application thereof, and the preparation method comprises the following steps: synchronously introducing a lithium-containing solution and carbon dioxide bubble water into a reaction device, and reacting to obtain lithium carbonate; the carbon dioxide bubble water is prepared by adopting the following method: simultaneously introducing carbon dioxide and water into a shear pump, and shearing and mixing to prepare the carbon dioxide bubble water. According to the method, the traditional gas-liquid reaction that carbon dioxide is directly introduced into the lithium-containing solution is creatively transformed into a gas-liquid-liquid reaction system that carbon dioxide bubble water prepared in advance and the lithium-containing solution are synchronously introduced, so that the product purity and stability are remarkably improved, and the bottleneck of a traditional intermittent process is broken through; the preparation method is simple, the production capacity and efficiency are remarkably improved, industrial large-scale production is easy to realize, and the obtained product lithium carbonate crystal is complete in growth, concentrated and controllable in particle size distribution and regular in morphology, and meets the processing requirements of high-end battery materials.

The mixer comprises a plurality of raw material barrels, a plurality of peristaltic pumps, a controller and a mixing barrel, a feed port is formed in the top of the raw material barrel, and a discharge port is formed in the bottom; different wine bodies are respectively arranged in the plurality of raw material barrels; a pipeline is arranged at the discharge hole; the peristaltic pump is arranged on the pipeline; the controller is electrically connected with the peristaltic pumps and controls the pumping speed of the peristaltic pumps. The mixing barrel is arranged below the raw material barrel; one end of a pipeline connected with the discharge hole is communicated with the interior of the mixing barrel; a stirring device is arranged in the mixing barrel; and a discharge opening is formed in the bottom of the mixing barrel. The problem that the matching control precision is insufficient due to the fact that wine blending is controlled through an adjusting valve is solved.

The invention relates to the technical field of petrochemical engineering, in particular to a pre-flash tower bottom oil diversion and emergency oil return system which comprises a switching and shunting module, a pressure mixing module and a cooperative control module. Boosting the pressure of the slurry oil and then dividing the slurry oil into a first branch flow and a second branch flow; the first branch is communicated with a first conveying pipeline, the first conveying pipeline is communicated with a wax oil mixing part, and slurry oil and product wax oil from the vacuum tower are mixed at the wax oil mixing part; the second branch is communicated with a second conveying pipeline, and the second conveying pipeline is communicated with an emergency connector. According to the invention, integrated hardware multiplexing and cooperative control are carried out on the load optimization process and the blockage emergency oil return function of the vacuum tower, and embedded active safety protection is constructed while load reduction and efficiency improvement of the vacuum tower are realized, so that the processing load and operation continuity of the device are systematically improved.

The utility model relates to the technical field of semiconductor component manufacturing, in particular to a wafer basket for feeding and discharging of a manipulator, which comprises a bottom plate, upright posts, guide posts and a top plate. Stand columns are arranged on two sides of the tail and the middle of the top of the bottom plate respectively, guide columns are arranged on two sides of the head of the top of the bottom plate respectively, and the stand columns and the guide columns are equal in height; the top plate is fixed to the tops of the stand columns and the guide columns. A plurality of grooves which are provided with three open surfaces and are used for mounting wafers are uniformly distributed in the vertical directions of the stand columns and the guide columns, the non-open side of the groove of the tail stand column is arranged on the tail side, and the non-open sides of the grooves of the middle stand column and the head guide column are arranged on the outer sides. The wafer lifting basket for feeding and discharging of the manipulator is composed of the base plate, the stand columns, the guide columns, the top plate and other simple components, and compared with a special wafer conveying box and a wafer loader, the wafer lifting basket is simpler in structure, so that the manufacturing cost is reduced, the wafer lifting basket is suitable for small-batch wafer test verification scenes, and the problem that the cost of an existing scheme is too high is effectively solved.

The invention provides a machining method for a counter bore of a ceramic matrix composite curvature component. The machining method mainly solves the technical problem that according to an existing machining method, a new thread in the counter bore is prone to being abraded and even losing efficacy. The method comprises the following steps: 1, determining the number of counter bores in the curvature component and the position and the size of each counter bore according to assembly requirements; 2, according to the size, determined in the step 1, of the counterbore, a corresponding counterbore bottom hole is formed in the corresponding position, and allowance is reserved; 3, a reamer is used for conducting finish machining on the countersunk bottom hole, and a corresponding threaded hole is formed in the countersunk bottom hole; 4, taper grinding rods of corresponding specifications are selected; 5, a taper grinding rod is adopted to machine a taper hole with an upward opening in the upper portion of each threaded hole, and a counterbore semi-finished product is obtained; 6, the countersunk process screw is adopted for trial matching of the countersunk hole semi-finished product, whether the countersunk hole semi-finished product meets the preset process requirement or not is confirmed, and if yes, machining of the countersunk hole is completed; and if not, machining is continued until machining of the counterbore is completed.

The utility model relates to a negative pressure adsorption platform and a coating device. The negative pressure adsorption platform comprises a platform body and a plurality of cover plates, wherein the platform body is provided with an adsorption surface and a mounting surface deviating from the adsorption surface; a plurality of strip-shaped adsorption grooves are formed in the adsorption surface, a plurality of grooves are formed in the mounting surface, and the cover plates are arranged on the side, provided with the mounting surface, of the platform body so as to seal the grooves correspondingly; the platform body is further provided with a plurality of first vent holes and a plurality of second vent holes, each groove is communicated with part of the strip-shaped adsorption grooves through part of the first vent holes, and each groove is communicated with an external negative pressure source through the corresponding second vent hole. Therefore, a plurality of slender through holes parallel to the adsorption surface are prevented from being formed in the position, close to the adsorption surface, of the platform body, so that the adverse effect on the flatness of the adsorption surface is greatly reduced, and the flatness of the adsorption surface meets the coating process requirement.