1092results about How to "Guaranteed straightness" patented technology

The invention discloses a cylindrical cabin docking assembly comprising an open and close movement mechanism, a lifting mechanism, a horizontal movement mechanism, a frame and a computer. The lifting mechanism and the horizontal movement mechanism are arranged in the frame, and the open and close movement mechanism is arranged above the frame. The lifting mechanism comprises a vertical support rod, a lifting support plane, a lifting sliding block, a lifting guide rail, a lead screw and a lifting motor. The lifting motor drives the lead screw to rotate to enable the lifting sliding block of the lifting support plane to move on the lifting guide rail. The open and close movement mechanism comprises two open and close support devices, a position control plate, an open and close sliding block, an open and close guide rail and a horizontal platform deck. The open and close support devices slide symmetrically on the guide rail via manual labor and are fixed by a locating pin. The horizontal movement mechanism comprises a horizontal motor, a rack, a gear, a rack, a horizontal sliding block and a horizontal guide rail. The horizontal motor drives the gear and the rack to mesh to drive the docking assembly to move on the horizontal guide rail; the horizontal motor and the lifting motor are controlled by the computer to realize automatic docking of the devices.

The invention discloses an automatic tin soldering machine. The automatic tin soldering machine comprises a machine base, a soldering tin wire passing mechanism, a control box, an automatic feeding mechanism, a soldering tin assembly mechanism, a soldering tin testing mechanism, a rosin infiltration mechanism, a tin soldering mechanism and a sliding table mechanism, wherein the automatic feeding mechanism, the soldering tin assembly mechanism, the soldering tin testing mechanism, the rosin infiltration mechanism, the tin soldering mechanism and the sliding table mechanism are connected with the control box; the automatic feeding mechanism is connected with the soldering tin assembly mechanism, and the soldering tin wire passing mechanism is connected with the sliding table mechanism; the control box is arranged on the front end face of the machine base; the automatic feeding mechanism, the soldering tin assembly mechanism, the soldering tin testing mechanism, the soldering tin wire passing mechanism and the tin soldering mechanism are sequentially arranged at the top of the machine base from left to right; the sliding table mechanism is arranged at the side edge of the soldering tin wire passing mechanism, a wire material is sequentially conveyed to the soldering tin testing mechanism, the rosin infiltration mechanism and the tin soldering mechanism by the sliding table mechanism after the wire material is conveyed to the soldering tin assembly mechanism by the automatic feeding mechanism, so as to be subjected to an automatic tin soldering process, and automatic discharging is realized. According to the automatic tin soldering machine, mechanical automation for charging, processing and the final discharging can be realized, the production efficiency is increased greatly, and the product quality can be guaranteed.

The invention relates to a method for removing an oxidation layer on titanium and titanium alloy wires and a device thereof. The method includes the following steps: 1. straightening: a straightening machine is used for straightening the titanium and titanium alloy wires; 2. phosphorus removal: a steel wheel phosphorus removal machine is used for removing the oxidation layer on the surface of the titanium and titanium alloy wires; 3. polishing: a sand belt wheel polisher is used for polishing the surface of the titanium and titanium alloy wires. The device is sequentially provided from left to right with a pay-off stand (1), a clamping device (2), a heating device (8), a straightening device (3), two steel wheel phosphorus removal machines (13), sand belt wheel polishers (14), a guide and guard (6) and a vertical down drawing machine (7). On the basis of the present steel wheel phosphorus removal machine, the method is additionally provided with a heating device, a phosphorus removing and polishing machine, a cooling device, a dust removing device and a tension device, thereby forming a production line for removing the oxidation layer on a large and heavy titanium alloy wire, so as to reach the purpose of removing the oxidation layer and polishing.

The invention discloses a continuous type alloy steel heat treatment line, solving the problem existing in small-section ultra-long material workpiece heat treatment. The continuous type alloy steel heat treatment line is formed by connecting a continuous type roller hearth heating furnace, a roller hearth type quenching groove and electric heating continuous type roller hearth furnace in series.The heat treatment process comprises the following steps of: carrying out austenitization heating on a workpiece in the continuous type roller hearth heating furnace, rapidly discharging after reaching the process time and then entering into the roller hearth type quenching groove; automatically generating a non-continuous water cold process according to the chemical components and different standards of the workpiece, and rapidly cooling through an immersion or spray mode; and tempering the workpiece which is cooled to room temperature according to the process requirement. The continuous type alloy steel heat treatment line has the advantages that: 1, the quenching, solid solution and normalizing continuous heat treatment of the small-section ultra-long material workpiece are achieved, and the heat treatment is completed on roller beds which are located on the same height and axis; 2, a quenching medium is stable in the rising process, and the workpiece can be simultaneously cooled in the length direction; and 3, fire danger and lamp black pollution are precluded by adopting non-continuous water quenching.

The invention discloses a proportional electromagnetic valve for an electrically controlled high-pressure common-rail fuel injection system of a diesel engine and relates to an electromagnetic valve. A position at which a fixed iron core (8) and a movable iron core (3) of the electromagnetic valve attract each other is a conical polar plane. The fixed iron core (8), the movable iron core (3), a guide pipe (18), a spiral spring (15), an electromagnetic coil (4), a square iron core (19), a shell (14) and a valve body (1) jointly form the electromagnetic valve in an assembling way. When driving current is input into the electromagnetic coil, a magnetic field is generated through a magnetic path in the valve, electromagnetic force with magnitude which is in proportion with the magnitude of the driving current and is not related to a stroke is generated relative to the movable iron core, the movable iron core is enabled to overcome spring force to move, the movable iron core stops moving at a balance point of the two kinds of force and therefore is kept at a stable position, and the movable iron core can proportionally and continuously move according to the magnitude of the driving current to control the opening of the valve. Under complex working conditions under which the diesel engine works, the electromagnetic valve not only can stably control the on/off of a fuel path, but also can accurately and proportionally control the flow of the fuel path according to the driving current.

The invention relates to a compression spring processing process. The compression spring processing process is characterized by comprising the following process steps of: rolling, cutting into rings, reducing diameters, quenching, performing primary tempering, inspecting mechanical properties, setting, grinding end faces, correcting the length and the concentricity of springs, performing secondary tempering, setting, performing primary heating and loading aging treatment, grinding the end faces, detecting, performing sand blasting, performing magnetic powder inspection, performing sand blasting, performing surface treatment, performing secondary heating and loading aging treatment, and detecting finished products. By the process, the deformation of the springs in the processing process can be reduced, the geometric dimension of the springs is ensured, and production efficiency is greatly improved.

The invention discloses a monolithic multi-way valve body casting piece casting method which comprises the following steps: preparing a core preparing mold, and checking and cleaning the mold; preparing a main core by mold sand, and after the shape of the main core is finalized, spraying a mold release agent, and demolding; preparing small cores, and drilling exhaust holes in the small cores; finishing to remove burrs on the main core and the small cores, and removing a transition jet nozzle on the main core; fixing the main core by a sand core bonding preparation tooling, firstly assembling the small core at one side, and then assembling the small core at the other side; mounting the assembled sand core into a shell body; and casting a valve body: performing a pouring process at two sides of a side thin gate at the same time, using an exothermic riser with the diameter of 120 mm and the height of 220 mm, and placing special cold iron at the bottom face of the shell body. The monolithic multi-way valve body casting piece casted by the casting method has the advantages that the linearity of a main valve hole casting blank is controlled to be less than or equal to 1.0 mm, and the valve hole linearity is ensured; the casting piece pore shrinkage, shrinkage porosity, internal gas holes and other casting defects, especially defects of micropores in the casting piece, are solved; and the compactness of the internal structure is improved.

The invention discloses a device for testing a frictional drag coefficient of an inner wall of a pipeline. The device consists of a high speed fan, a frequency converter, a turbulence smoothening section, a pipeline bracket, the pipeline, a multitube pressure gauge, a Pitot tube and a slanting leg manometer, wherein the frequency converter is connected with the high speed fan; the front end of the turbulence smoothening section is connected with the outlet of the high speed fan, and the rear end is connected with the pipeline; the pipeline is arranged on the pipeline bracket with an adjustable mechanism; pressure testing holes are processed at different positions of the pipeline and are connected with the multitube pressure gauge through tee joints and hoses; and at the tail end of the pipeline, the wind speed in the pipeline is tested by the Pitot tube, and the Pitot tube is connected with the slanting leg manometer. A method for testing the frictional drag coefficient of the inner wall of the pipeline comprises the following six steps of: 1, selecting a testing scheme; 2, selecting a testing means; 3, distributing the pressure testing holes; 4, analyzing the experimental accuracy; 5, designing and manufacturing the pipeline bracket; and 6, assembling the testing device, wiring and debugging. The invention has application value in the technical field of pipeline pressure and friction drag testing.

The invention relates to an electric locomotive roof assembly and welding tool, which comprises an integral frame, a gantry and a cylinder, wherein the integral frame consists of a reinforcing ribbed plate, a main beam, an edge beam, a bottom plate and a side wall board; the side wall board and the bottom plate form an inclination angle; a sliding track for mounting the gantry is arranged outside the side wall board; the gantry is provided with a movable cylinder fixing frame and is used for eliminating welding gap between an aluminum plate and the frame to guarantee welding quality; and the effect of reducing welding deformation is reduced by forming rigid fixing force for the aluminum plate and the frame. Side wall pressing cantilevers are uniformly distributed outside the edge beam; and the reinforcing ribbed plate is provided with a positioner connecting pipe. The interference between a product and the tool is eliminated in a movable pressing and fixed pressing combined mode, so that all products can be welded on the tool at one time. The working efficiency is increased. All positioning devices are used for quick and accurate positioning. The stability of the tool is effectively guaranteed, and the product quality requirements are met.

The invention provides a machining and manufacturing method and application of heat-resistant titanium alloy Ti60 wires. The method comprises the steps that Ti60 titanium alloy ingot castings are smelted by adopting a vacuum consumable smelting technology; the smelted Ti60 titanium alloy ingot castings are forged into rods by adopting a free forging technology; the Ti60 titanium alloy rods are finish-forged into thick rod blanks by adopting a finish forging technology; the Ti60 titanium alloy thick rod blanks are rolled into straight strip wire blanks by adopting a hot rolling technology; surface treatment is conducted on Ti60 titanium alloy annealing wire blanks, and pre-oxidation oxidation film hanging treatment is conducted after defects on the surfaces of the wire blanks are removed; continuous high-temperature drawing deformation is conducted on the Ti60 titanium alloy wire blanks obtained after surface treatment by adopting a straight wire drawing machine; the drawn wires are straightened by adopting electric heating tension; and annealing heat treatment is conducted on the straightened wires, and finally centerless grinding is conducted. According to the machining and manufacturing method and application of the heat-resistant titanium alloy Ti60 wires, through combination of different heat machining and heat treating technologies, different matching combinations of the tensile strength, the plasticity and the shearing strength can be obtained, and the heat-resistant titanium alloy Ti60 wires can be used for manufacturing advanced aerospace fasteners such as rivets, bolts and nuts and are used in the temperature range of 600-650 DEG C.

The invention relates to super-thick EH36 steel for an offshore wind power pipe pile. The super-thick EH36 steel for the offshore wind power pipe pile comprises the following chemical components in percentage by mass: .015 to 0.18 percent of C, 0.15 to 0.30 percent of Si, 1.40 to 1.60 percent of Mn, less than or equal to 0.0070 percent of P, less than or equal to 0.0030 percent of S, 0.050 to 0.070 percent of Nb, 0.015 to 0.030 percent of V, 0.08 to 0.020 percent of Ti, 0.030 to 0.050 percent of Al, 0.15 to 0.40 percent of Ni, 0.10 to 0.20 percent of Cr, and the balance of Fe. A production process flow comprises the following steps: performing converter operation, performing LF refining, performing vacuum degasifying, performing Ca treatment, performing continuous casting, dehydrogenizing, rolling, performing air cooling, performing high-temperature hot straightening, and normalizing. According to the production process flow, the super-thick EH36 steel of 90 to 120 mm for the offshore wind power pipe pile, which is high in unit weight, high in strength, high in impact toughness, small in thickness tolerance and high in straightness and does not have a surface defect is obtained.

The invention relates to an internal supporting type fixture for turning external circles of thin-wall parts and an application of the fixture. The fixture comprises multiple supporting device units;the supporting device units are connected through telescopic axial connecting components; each supporting device unit comprises a supporting device mounting disk, multiple supporting disks and radialtelescopic arms; a gear is arranged inside each supporting device mounting disk; a rack is arranged at one end of each radial telescopic arm; one end of each radial telescopic arm is inserted in the circumferential side surface of the corresponding supporting device mounting disk to mesh with the corresponding internal gear, and the other end of each radial telescopic arm is fixedly connected withthe corresponding supporting disk; the length of the radial telescopic arms is adjusted by the aid of a rocker arm inserted in the supporting device mounting disks, so that the supporting disks are controlled to support the inner walls of the thin-wall parts. Compared with the prior art, the fixture has the advantages that the roundness and the straightness of the parts can be well guaranteed, and machining of the external circles of different series of thin-wall pipe fittings can be met.

The invention provides a testing platform for position and attitude precision of a dual-antenna receiver and a testing method thereof. The testing platform comprises a supporting device, a linear guide rail and a traction system. The supporting device consists of a lifting support and a rotation support. The linear guide rail includes a U-shaped-groove guide rail with an upward opening, a sliding block, and a planar slipway, wherein the sliding block and the planar slipway are arranged above the U-shaped-groove guide rail; the U-shaped-groove guide rail is installed on a support platform; and two antennas are installed on the slipway. The traction system includes a speed regulating motor, a driving wheel, a gear belt, limit switches and a fixedly connection device; the speed regulating motor and the driving wheel are fixed on steel guard bar tubes at the two sides of the linear guide rail by the fixedly connection device; the gear belt is connected with the speed regulating motor and the driving wheel; one side of the gear belt is connected with the slipway fixedly; and the limit switches are arranged at the two ends of the linear guide rail. Therefore, the position and attitude precision of the dual-antenna receiver under different base line lengths and different speeds can be tested; and a problem of difficult positioning and attitude measuring precision evaluation of the dual-antenna receiver can be solved.

The invention discloses a pencil production polishing device. The pencil production polishing device comprises a frame, a conveying mechanism, a rolling mechanism and a grinding mechanism; the frame is provided with a worktable; the frame is also provided with a support frame 1 and a support frame 2; a support plate is arranged at the upper end of the support frame 1; a side plate frame is arranged at the upper end of the support frame 2; the conveying mechanism consists of a stepper motor, a driving roller 1, a driven roller 1 and a conveying belt; semicircular grooves are uniformly formed in the conveying belt at intervals; the rolling mechanism consists of a motor 1, a driving roller 2, a driven roller 2 and a rolling belt; and the grinding mechanism consists of a motor 2, a speed reducer and a grinding roller. The pencil production polishing device realizes large-batch grinding operation of pencils in the production process, and improves automatic production efficiency of the pencils.

The invention relates to welding equipment, in particular to a longitudinal seam welding machine suitable for thin-wall small-diameter suspended single-face welding and double-face forming. The longitudinal seam welding machine comprises a rack. The rack is provided with a work-piece locating device, folding and pressing devices, a central spindle supporting device, a central spindle device, a centering device and a walking gantry welding device. The first folding and pressing device and the second folding and pressing device are located on a sliding rail and connected with a horizontal air cylinder. The central spindle device is located above the locating device. According to the technical scheme, acting force is exerted on a longitudinal seam of a rolling pipe from left and right, under the effect of the misalignment-preventing centering device, seam alignment of a work-piece can be finished without manual adjustment, the straightness of butt seams can be ensured, and the phenomena that positions of the butt seams need to be manually adjusted many times and misalignment is corrected in the past production process can be avoided.

The invention discloses a special digital combined machine tool in tri-eccentric sealing surface milling a valve; two independent turning worktables can process two workpieces of a butterfly plate and a valve body simultaneously; two milling driving heads are arranged on a base with the same inclination through each own upright column, ensuring the conformability on conicity and accuracy of the workpiece sealing surface of the butterfly plate and the valve body. Because the configuration of the main shaft servo motor realizes high-speed heavy cut and the two axis coupled digital feed control system realizes high intensity continuous milling for inclined cut cone surface at three dimensional direction with automatic precision feeding, the machine tool has simple structure, excellent performance, convenient adjustment and maintenance. Comparing with the common machine tool of the traditional technique, this machine tool not only improves the dimensional processing precision and production efficiency; but also greatly reduces the production cost.

The invention relates to a high-strength steel plate and a plate shape control method thereof. The steel plate comprises the following chemical components in percentage by weight: 0.05-0.07% of C, 0.25-0.35% of Si, 1.4-1.5% of Mn, 0.015% or less of P, 0.005% or less of S, 0.015-0.03% of Als, 0.03-0.04% of Nb, 0.001-0.0015% of Ca, and the balance of iron and inevitable impurities. According to the method, through appropriate heating, rolling, cooling and straightening technology design, the straightness of the steel plate can be guaranteed to meet requirements, and the degree of unstraightness of the steel plate is smaller than 3.2mm/m; and a cold straightening machine for re-straightening is not needed, so that manufacturing cost is reduced.