47results about How to "Optimize wall thickness" patented technology

The invention discloses a magnesium alloy microcapillary and a preparation method thereof and belongs to the field of metal material precision machining. The method comprises the following steps that(1) a magnesium alloy blank is extruded to obtain a seamless extruded pipe blank; (2) the obtained seamless extruded pipe blank is subjected to stress relief annealing; and (3) the annealed seamless extruded pipe blank is subjected to multiple passes of drawing and intermediate annealing, and the magnesium alloy microcapillary is obtained. The magnesium alloy microcapillary prepared through the preparation method provided by the invention is good in surface quality, precise in size, uniform in wall thickness and excellent in mechanical property; the machining method is simple in process, low in cost, high in machining efficiency, and capable of performing large-scale production; and the magnesium alloy microcapillary can be used as a structural component to be applied to the fields of automobiles and electronics, and can also be used as a medical implant used for preparing an intravascular stent.

By aiming at the problem of core fracture and leakage occurring in the casting process of a hollow turbine work blade and the problem of wall thickness due to eccentricity, the invention provides a double-buffering casting system for a directional hollow turbine work blade, and belongs to the field of directional solidification of investment casting. The casting system consists of a circuitous casting funnel, a sprue cup, an upper part filter screen, an upper circular disc, a solid plug sheet, a hollow pipe, a vertical sprue, a lower part filter screen, a transverse straight sprue, a blade die case cavity, a middle post pipe, a bottom disc and an exhaust passage, wherein through the buffering effect of the circuitous casting funnel, the upper circular disc, the vertical sprue, the transverse sprue and the filter screens on metal liquid, the flowing speed of the metal liquid can be decelerated, so the impact of the metal liquid on a ceramic die core arranged in the die case cavity is greatly reduced, the problem of core fracture and leakage easily occurring in the casting process and the problem of wall thickness due to eccentricity can be greatly solved, the rejection rate is reduced, and the cost is reduced.

An injection blow molding method for making a container having the steps of injecting a molten crystallizable polymer in a preform mold via a hot runner system and biaxially stretching the preform by blowing to form a container. The method further having the step to selectively modify the flow path of the molten crystallizable polymer within the hot runner system.

The invention relates to a production method for producing a paint plant component, in particular for producing a component of a colour changer, a colour valve, or a spray device. According to the invention, the paint plant component is produced in a rapid prototyping method. The invention also relates to a paint plant component that is produced accordingly.

The production process of the composite polymer pipe includes the following steps: coating one layer of thermosol to the inner surface of inner plastic pipe and inserting matched seamless metal pipe; reducing and drawing the combination of the inner plastic pipe and outer metal pipe; heating the reduced and drawn pipe; coating the outer surface of the outer metal pipe with adhesive; compounding one layer of outer plastic pipe; and cooling to form during drawing. The special production mold includes outer mold and inside core mold, the core mold consists of inner core mold and outer core mold, and there are inner molding nozzles and outer molding nozzles set between the inner core mold and the outer mold and between the outer core mold and the outer mold separately.

The invention discloses a compact high-power speed reduction gear ring for a starting machine of a diesel vehicle. The compact high-power speed reduction gear ring comprises a gear ring body; speed reduction teeth are arranged in the gear ring body; strip-shaped positioning ribs are evenly distributed on the outer surface of the gear ring body; the positioning ribs stick out from the bottom part of the gear ring body. According to the speed reduction gear ring disclosed by the invention, on the basis that the mechanical strength is ensured, the wall thickness and the height of a product are optimized, and the size is reduced, so that the speed reduction gear ring is lightweight, and meanwhile, the cost is reduced.

The invention provides application of a combined preparation of mesenchymal stem cell and exosome in preparation of myocardial infarction drug. The combined preparation of mesenchymal stem cell and exosome comprises mesenchymal stem cells and exosomes. The mesenchymal stem cells can secrete a large number of exosomes in the culture process, the exosomes secreted by the mesenchymal stem cells can adjust the local tissue microenvironment, promote angiogenesis, improve local blood supply, recover the thickness of the ventricular wall and improve the left ventricular ejection fraction of a myocardial infarction rat, and therefore the cardiac function of the rat is improved. The mesenchymal stem cells have a certain myocardial infarction treatment effect, the exosome suspension can provide a better living environment for the mesenchymal stem cells, and can maintain the activity and function of cells to the maximum extent.

A compressor for a vehicle air conditioning system comprises a front casing in which is mounted a swash or wobble plate arrangement operatively connected to a drive shaft and a plurality of pistons each provided with a piston body at one end and a foot portion at its other. A cylinder block is also provided defining a plurality of cylinder bores equally distributed circumferentially around the drive shaft, in each of which bores one of the piston bodies can be reciprocated by the swash or wobble plate, as the drive shaft rotates. The inner wall surface of the front casing defines a plurality of longitudinally extending recesses in positions apposed to each piston. The piston body and the foot portion of each piston are connected by a bridge that is bending resistant and projects outwardly into these apposed recesses. Also, at least one side of the bridge is provided with a laterally projecting wing that supports the piston against the adjacent inner wall surface of the front casing to one side of the recess. The front casing and the pistons are thus designed for mutual interengagement and, in the piston, the requirement to provide a bending resistant portion has been divided away from the requirement to provide an anti-rotation locking arrangement.

The invention provides an adjustable air cooling device. The adjustable air cooling device comprises air covers (1) and air cover fixing frames (2), wherein each of the air covers (1) is arranged at one end of the corresponding air cover fixing frame (2); at least one air duct (3) is formed in the side part of each of the air covers (1); an air intake connector (4) is arranged at the top of each of the air covers (1); one end of each of the air intake connectors (4) communicates with the corresponding air duct (3), and the other ends of the air intake connectors (4) are embedded in the air cover fixing frames (2) separately; locking buckles (5) are arranged on each of the air covers (1) in a symmetric manner; locking rings (6) are arranged on each of the air cover fixing frames (2) in a symmetric manner; each of the locking buckles (5) is connected with the corresponding locking ring (6) in a matched manner; and the two air cover fixing frames (2) are arranged on the two sides of a water cooling device separately. According to the adjustable air cooling device, the structure is simple, the assembly and disassembly are convenient, the annular cooling and drying of the surface of an extrusion molding part are realized, a good and uniform cooling effect is achieved, the wall thickness and mechanical property consistence of the extrusion molding part are better, and the performance and quality of products during the production process can be ensured easily.

An injection blow molding method for making a container comprising the steps of injecting a molten crystallizable polymer in a preform mold via a hot runner system and biaxially stretching the preform by blowing, thereby forming a container, characterized in that said method further comprises means to selectively modify the flow path of the molten crystallizable polymer within the hot runner system.

The invention relates to a soft sleeve air-blowing optical cable. The cable comprises a cable core and an outer sheath wrapping the cable core, wherein the cable core is a layer-stranded cable core and comprises a central reinforcer and a loose tube stranded at the periphery of the central reinforcer, an optical communication unit is sleeved in the loose tube, the optical cable is characterized inthat the loose tube is made of a flexible plastic material, the elastic modulus of the flexible plastic material is 100-700MPa, and the outermost layer is an outer sheath. The optical cable is simplein structure, small in diameter, light in weight, high in optical fiber density and good in air-blowing laying performance; the loose tube is made of the flexible sleeve plastic material, is good inflexibility, is easy to bend, cannot be bent, can achieve the small-bending-radius coiling in the connector box, enables the optical fiber coiled in a divergence mode to be better protected, does notneed to break the optical fiber, greatly facilitates branching and connection of an optical cable, and improves construction efficiency.

The invention discloses a reciprocating telescopic unfolding mechanism. The reciprocating telescopic unfolding mechanism comprises a driving motor, a transmission lead screw, N nuts, N stages of telescopic arms, a plurality of unfolding locking mechanisms, a plurality of folding locking mechanisms and a plurality of rolling bearings, wherein, the driving motor is connected with one end of the transmission lead screw through a rotating shaft, the nuts are installed at the ends, close to the motor, of the telescopic arms; the telescopic arms are connected with one another through the rolling bearings; and the unfolding locking mechanisms are arranged on the outer walls, away from the end part of the motor end, of the second-stage to (N-1)-stage telescopic arms, and the folding locking mechanisms are arranged on the inner walls, away from the end part of the motor end, of the second-stage to (N-1)-stage telescopic arms. The mechanism is unique and controllable in motion trail, reliable in locking, controllable in step-by-step stretching and unfolding, and automatic and repeatable in stretching and unfolding processes; through motor driving, the defect that passive driving unfolding impact is large is effectively avoided, the unfolding rigidity and strength can be subjected to adaptive optimization design according to requirements, and the storage ratio is high; and the mechanism can be widely applied to large-scale and even ultra-large-scale deployable structures in space, and has a wide application prospect.

The invention discloses a machine base of a lightweight and high-rigidity gantry machining center. The rib is an inverted W shape, the triangular-shaped tips on both sides of the upper end of the reinforcing rib pass through the top base plate, and the top of the triangular-shaped tip of the reinforcing rib is provided with a top slide rail, and the three ends of the lower end of the reinforcing rib It is connected and fixed with the base plate on the lower side. In the present invention, the double guide rails of the base are supported by inverted W-shaped reinforcing ribs, so that the weight of the moving part workbench and the workpiece processed on the guide rails is dispersed through the reinforcing ribs, and the supporting area and range are reduced from small to small. To the maximum, the inside of the base is like multiple triangular supports, which minimizes the casting stress of the casting. At the same time, through annealing and other artificial aging methods, the residual stress of the casting is eliminated, and the stability of the machine tool is greatly improved; at the same time, the material cost is saved. At the same time increase the rigidity.

A pitman of a jaw crusher (1; 1') comprises an upper part (2), which comprises an upper supporting point (3) for supporting the pitman in the body of the jaw crusher, and a lower part (4) comprising a lower supporting point (5) for supporting the pitman in the body of the jaw crusher through a toggle plate. The lower part (4) of the pitman (1; 1') comprises sidewalls (13) and honeycomb structure open to the crushing direction, the structure comprises one or more cross-sectional supports (15) reaching from the first sidewall of the pitman to the second sidewalk. A jaw crusher (100), a crushing plant (200) and a method for increasing crushing capacity of mineral material are also provided.

The invention provides a structural design method of a rolling ball bearing. The method comprises the steps that an objective function of a rolling bearing design is determined, a rated dynamic load of the bearing is taken as the an objective function, the maximum rated dynamic load under the optimal bearing structure is determined, and according to a bearing structure size boundary condition, a bearing manufacturing and assembly structure size boundary condition, a bearing ring contacting load boundary condition, and a bearing structure optimization design based on the genetic algorithm, geometric structure data based on the comprehensive design of the bearing structure, assembly and service load is obtained. The structural design method of the rolling ball bearing has the advantages thattime consumption is short, the method can be combined with test methods and guide tests, thereby saving the test cost, and has the advantages of high efficiency, low cost, strong practicability and the like based on the numerical analysis method.

The invention discloses a drawing device and method for small-batch multi-variety high-uniformity glass tubes and belongs to the technical field of special glass manufacturing. The invention mainly aims to solve the problems of unstable drawing quality, low yield and the like of special application glass tubes with small market demand and multiple varieties (formulas). The drawing device is mainly characterized by comprising a forming furnace body, a material basin, a material homogenizing barrel, a leading-in pipe, a stirrer and a forming part, the material basin is arranged in the forming furnace body, the leading-in pipe is located on the upper portion of the forming furnace body and is coaxial with a leading-in hole in a cover plate, and an outlet of the leading-in pipe extends into the leading-in hole, the material uniformizing barrel is coaxial with a leakage opening in the material basin, and a certain gap is kept between the lower edge of the material uniformizing barrel and the inner bottom surface of the material basin, the stirrer is arranged inside or outside the material uniformizing barrel and is coaxial with the material uniformizing barrel, and the forming part is arranged at the lower part of the forming furnace body. The drawing quality of small-discharge-amount glass tube forming can be solved with a specific process method. The drawing device is mainly used for drawing small-batch multi-variety high-uniformity glass tubes.