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284results about How to "Improve straightness" patented technology

Double-flexible-grinding-head magnetorheological polishing device

ActiveCN102632435AEfficient removalEffectively match processing efficiencyGrinding drivesGrinding feed controlMagnetic currentEngineering
The invention discloses a double-flexible-grinding-head magnetorheological polishing device. In the device, a vertical gantry of a bed body and an X-axis are both fixed on a horizontal base; a worktable is fixed on a sliding block of the X-axis; a Y-axis is fixed on a horizontal beam of the vertical gantry; and a first Z-axis and a second Z-axis are arrangedon the Y-axis in parallel. A large flexible grinding head is installed on the first Z-axis; and a small flexible grinding head is arranged on the second Z-axis. A high-flow circulation system connected with the large flexible grinding head and a low-flow circulation system connected with the small flexible grinding head are arranged on a trolley. A control cabinet is arranged at the rear part of the vertical gantry; and a circulation system cabinet and a cleaning system are arranged at the side surface of the vertical gantry. The double-flexible-grinding-head magnetorheological polishing device provided by the invention has the advantages of high accuracy, high rigidness, high stability and high dynamic property. The double-flexible-grinding-head magnetorheological polishing device not only can be used for processing of large-caliber phase elements, but also can be used for high-accuracy processing of large-caliber planar optical elements within the range of full caliber. The optimal matching of the processing efficiency and the processing accuracy can be realized.
Owner:INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS

Abrasion-proof cast iron roll collar for straightening steel rail and preparation method thereof

InactiveCN101412050AEliminate high temperature heat treatmentShorten the production cycleRollsProcess efficiency improvementCompound aWear resistant
The invention provides a wear resistant cast iron roll collar used for aligning a steel rail and a preparation method, which belong to the technical field of steel rail processing. The prior wear resistant cast iron roll collar used for aligning the steel rail has the defects of easy occurrence of cracks, complicated manufacture process and the like in quenching process. The method is to compound a wear resistant outer layer with a magnesium iron inner layer into an integral roll collar by centrifuge casting, wherein the wear resistant outer layer comprises the following ingredients in weight percentage: 3.0 to 3.4 percent of C, 1.5 to 2.0 percent of Si, 1.2 to 1.6 percent of Mn, 0.2 to 0.4 percent of Nb, 0.03 to 0.06 percent of RE, 0.03 to 0.06 percent of Mg, 2.5 to 3.0 percent of Ni, 0.4 to 0.6 percent of Mo, 0.8 to 1.2 percent of Cu, 1.5 to 1.8 percent of Cr, 1.0 to 1.4 percent of V, 0.03 to 0.08 percent of B, 0.002 to 0.005 percent of Te, 0.01 to 0.03 percent of Ba, less than or equal to 0.06 percent of P, less than 0.03 percent of S, and the balancing being Fe. The invention has the advantages of high hardness of the roll collar, good wear resistance, simple production process and low production cost.
Owner:BEIJING UNIV OF TECH

Complex surface circuit conformal spray printing method and equipment

ActiveCN107512083AOmit vector transformationSteady ejectionDuplicating/marking methodsTypewritersManufacturing cost reductionComputer module
The invention belongs to the field of electric fluid dynamics spray printing, and discloses a complex surface circuit conformal spray printing method and equipment. The equipment comprises a spherical motor module, a translation module and a conformal spray printing module. The translation module drives the spherical motor module to move in an X-axis direction and a Y-axis direction in a plane; the conformal spray printing module comprises a spray head part and an electric signal part; the spray head part moves up and down so as to realize a freedom degree of a Z-axis direction; the electric signal part applies voltage on an ink fluid and an electrode ring in an ink cartridge; the spherical motor module rotates around the X-axis direction, the Y-axis direction and the Z-axis direction so as to realize six-degree-of-freedom motion of an object to be spray-printed; a curve surface base plate is grounded, so that the electric potential of the object to be sprayed-printed is zero; and the voltage applied in the ink fluid is higher than the voltage applied in the electrode ring, so that a gradient electric potential difference is formed on the ink fluid, the electrode ring and the object to be spray-printed. Through the complex surface circuit conformal spray printing method and the equipment provided by the invention, a conformal patterning electric spray-printing process of a complex surface is realized, an application range of the electric spray-printing process is improved, the manufacturing cost is reduced, and the printing accuracy is improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for smoothing continuous ply rolling of metal-based composite plates

The invention belongs to the field of rolling of metal composite plates, and particularly relates to a method for smoothing continuous ply rolling of metal-based composite plates. The method comprisesthe steps of rolling a blank by using a two-roll mill with corrugated rolls on the top and the bottom to obtain a corrugated composite plate of which the upper surface and the lower surface are corrugated; carrying out annealing treatment; heating or cooling the annealed composite plate to a required temperature according to process requirements; and rolling and flattening the composite plate byusing a two-roll mill or four-roll mill with common flat rolls on the top and the bottom to obtain a corrugated flattened composite plate of which the upper surface and the lower surface are planes. During first-pass rolling through the corrugated rolls, rolling force changes in a stepped manner, thus, large stress can be generated at a position of a trough of a rolled piece, metallurgical bondingof metals is promoted and is gradually diffused towards two sides, during second-pass rolling through the flat rolls, the original wave crest position with small stress can generate peak stress againdue to increasing of rolling reduction, and metallurgical bonding on a whole contact surface is promoted again.
Owner:TAIYUAN UNIV OF TECH

Hot rolling method for wide and thin size high-strength cold-rolled base plate for automobile

The invention discloses a hot rolling method for a wide and thin size high-strength cold-rolled base plate for an automobile. After continuous casting billets are assembled in a heating furnace in a hot state, the Cu accumulation amount of iron oxide scales and steel substrates is reduced by adopting high-temperature preheating and high-temperature rapid heating technologies; after rough rolling, the thickness of an intermediate billet is reduced, a heat holding cover is used for reducing temperature drop and temperature differences of all parts, so that the finish rolling entry temperature of the intermediate billet is increased; and loads of all racks for finish rolling are reduced, and the stability of finish rolling is improved. In the process from finish rolling to steel belt coiling, a controlled rolling and controlled cooling technology is adopted, so that the cold-rolled base plate has excellent uniformity between the shape and the structure property. According to the method, the cold-rolled base plate with the thickness of 1.5-2.5 mm and the width of 1650-2000 mm can be obtained; the convexity degree of a steel belt is controlled to be in a range between 45-15 mu m and 45+15 mu m; the straightness is controlled to be 30I; the thickness accuracy is in a range between -30 mu m and +30 mu m; the structure property of different edges of the head, the middle, the tail of the steel belt is uniform; and the yield and the production efficiency of the wide and thin size high-strength cold-rolled base plate can be increased and improved, so that the cold-rolled base plate meeting the requirements of the actual product quality and the performance is provided for steel plates with the grade of 450-590 MPa for automobile covering parts.
Owner:ANGANG STEEL CO LTD

Steel-aluminum compound rail production line

The invention relates to a steel-aluminum compound rail production line belonging to production equipment of devices for supplying power for rail transit. The steel-aluminum compound rail production line is characterized by adopting a steel-aluminum composite host 1 and a shaping machine 2, a plurality of conveying mechanisms 4 and a traction machine 3 are arranged in front of and behind steel-aluminum composite host 1 and the shaping machine 2 so as to form a steel-aluminum composite rail production line. The host 1 consists of a pre-compounding group 5, a main compounding group 6, a repeated compounding group 7, a vertical regulating mechanism 8 and a horizontal regulating mechanism 9. Rollers on the production line rotate at same linear speed, a stainless steel tank 29 of more than or equal to 15 meters long is put in a trough of an aluminum section 27 to be pressed vertically and horizontally and force a support lug to be deformed, and the steel and the aluminum are compounded into a whole as conductive steel-aluminum compound rail 22. The steel-aluminum compound rail production line has high automation level, good product linear speed and fast production, is firm for compounding of the stainless steel and aluminum, and can produce steel-aluminum compound conductive rails of different varieties and different sections.
Owner:山东伟盛铝业有限公司

Precision measuring device based on circularity cylindricity and measuring method thereof

InactiveCN106168471AOvercome the disadvantage of poor stiffnessRealize measurementMeasurement devicesDisplay deviceLarge size
The invention discloses a precision measuring device based on circularity cylindricity and a measuring method thereof, and relates to an industrial large size external diameter and internal diameter measuring technology field, especially relates to precision measuring device based on the circularity cylindricity and the measuring method thereof. The precision measuring device comprises a measuring device body, which comprises a base (1) and a control platform (13) disposed on the base. The upper part of the control platform is provided with a control panel (12), a gas floatation main shaft (6), and a gas flotation vertical column guide rail (10). The upper part of the gas floatation main shaft is provided with an aligning leveling working bench (7), and the front part of the gas floatation vertical column guide rail is horizontally provided with a horizontal guide rail (11). The front end part of the horizontal guide rail is provided with a sensor support (9), and a sensor (8) is connected with the horizontal guide rail by the sensor support. A lower computer (3) is connected with the precision measuring device by a USB and Ethernet, and is used to feed information back to an upper computer. A computer display (4) is used for real-time display. The precision measuring device is not limited by an industrial computer, and has advantages of high precision, easy operation, stable transmission, and high transmission efficiency.
Owner:RIZHAO RUIWODE PRECISION TECH CO LTD

EVA film hob cutting device of thin-film solar cell

The invention relates to a part of a thin-film solar cell manufacturing device, in particular to an EVA film hob cutting device of a thin-film solar cell. The EVA film hob cutting device comprises a knife rest which is used for installing a cutting knife, wherein the bottom of the knife rest is fixedly connected with a slide block, the slide block is mutually matched and positioned with a fixed linear guide track under the slide block, the slide block and the knife rest can move along the linear guide track, an upper knife shaft, a lower knife shaft and a rubber wheel shaft are arranged on the knife rest, one of the upper knife shaft, the lower knife shaft and the rubber wheel shaft is a driving shaft driven by an electric motor, the other two shafts are synchronously driven by the driving shaft through a driving mechanism, the ends of the same sides of the upper knife shaft and the lower knife shaft are respectively provided with an upper hob and a lower hob which can rotate along the upper knife shaft and the lower knife shaft, the edges of the upper hob and the lower hob are provided with interlaced and bonded parts, at least one rubber rolling wheel is arranged on the rubber wheel shaft, and the bottom of the rubber rolling wheel is pressed on the top surface of the linear guide track. The EVA film hob cutting device can automatically cut an EVA film of a thin-film solar cell and has high automation degree and high machining precision.
Owner:镇江市博锐自动化科技有限公司

Planetary web roll rotating hub type flattening machine

ActiveCN101439370AEliminate random rotationIncrease contactHydraulic motorEngineering
The invention relates to a planetary inclined roll rotary hub straightening machine, comprising a rotary hub, a first power driving device for driving the rotary hub to rotate, at least two groups of straightening rollers arranged in the rotary hub and a second power driving device for driving the rotation of the straightening rollers. An upper straightening roller and a lower straightening roller of every group of the straightening rollers are symmetrically arranged at the two sides of a rotating axis and the straightening rollers are inclined in certain angle corresponding to the rotating axis. A structure combining the straightening rollers which can autorotate with the rotary hub which can implement revolution is adopted. Therefore, previous driven straightening rollers in the rotary hub are changed into driving straightening rollers. The rotating speeds of the rotary hub and the straightening rollers are matched to eliminate the puppet rotating phenomenon of straightened roundwood. The contact and the compression bending state of the straightening rollers and the straightened roundwood are improved, and the straightness is improved. The straightening rollers driven by a hydraulic motor clamp the straightened roundwood tightly and roll around the straightened roundwood to ensure the roundness. The planetary inclined roll rotary hub straightening machine is very beneficial to the straightening of super-long thin wall pipes.
Owner:广东冠邦科技有限公司

Protection cable skinning knife

The invention provides a protection cable skinning knife which comprises a handheld cylinder. A tightening mechanism is arranged on the upper end of the cylinder. The tightening mechanism comprises a ring with an internal thread and a tightening cylinder with an external thread. The ring sleeves the tightening cylinder, and is in matching connection with the tightening cylinder through the internal thread and the external thread. The tightening cylinder is composed of a number of tensioning bars, and extends outward along the upper end of the cylinder to form a cone with tapering bore. The axes of the tightening cylinder and the cylinder are superimposed. Two rod-shaped tools are symmetrically arranged on the upper end of the tightening cylinder, and a tool tip is arranged on the upper end of each tool. A tool rod is arranged on the lower end of each tool. The tool rods and the tensioning bars are hinged. An arc-shaped part is arranged on the front end of each tool tip. An arc-shaped notch with an outward opening is arranged below each arc-shaped part. An arc-shaped blade is formed on the inner side of the upper part of each arc-shaped notch. The arc-shaped blades of two tools are inwardly corresponding. According to the invention, a cable skinning effect is improved; skinning time can be greatly reduced; when skinning is carried out, a cable core wire can be effectively protected from being scratched; the whole protection cable skinning knife sleeves a cable; and the protection cable skinning knife has the advantages of easy use and time and effort saving.
Owner:STATE GRID SHANDONG ELECTRIC POWER CO YUNCHENG POWER SUPPLY CO

Four-point-bending over-bending straightening process method for large shaft tube parts

The invention relates to a four-point-bending over-bending straightening process method for large shaft tube parts and is characterized in that two lower dies are arranged on a workbench of a forming press, two upper dies are connected to a beam of the forming press, and a shaft tube part is placed among the two upper dies and the two lower dies under the beam of the forming press; the distance between the two lower dies is determined by calculation, the distance between the two upper dies is determined by calculation, and the positions of the upper dies above the lower dies, and the rolling reduction of the two upper dies are determined by calculation; the distance between the two upper dies and the distance between the two lower dies are respectively adjusted to the expected position; then, the shaft tube part is pressed, after the pressing is finished, the upper dies move upwards along with the beam of the forming press; and whether the straightness of the shaft tube part meets requirements or not is inspected, if not, the steps are repeatedly carried out until the requirements are met. The four-point-bending over-bending straightening process method for the large shaft tube parts has the advantages that the finally-finished shaft tube part is deformed uniformly and realizes smooth transition, and the straightness of the parts better meets the requirements; residual stress existing in the parts is smaller, and the distribution of the residual stress is uniform; and meanwhile, the forming cycle is shortened, and the working efficiency is improved.
Owner:YANSHAN UNIV

Section steel straightening device and method

InactiveCN103071703AGood section sizeImprove straightnessLateral bendingEngineering
The invention discloses a section steel straightening device, which comprises a straightening roll system, wherein the straightening roll system is arranged on a body; an output end of the straightening roll system is also provided with a rolling and straightening roll system; the rolling and straightening roll system comprises at least one pair of upper and lower rolling and straightening rolls and at least one pair of left and right rolling and straightening rolls; the upper and lower rolling and straightening rolls are symmetrically arranged on the upper and lower sides of a pass steel wire and a roll gap I for passing through section steel is formed between the two rolls; and the left and right rolling and straightening rolls are symmetrically arranged on the left and right sides of the pass steel wire and a roll gap II for passing through the section steel is formed between the two rolls. According to the section steel straightening device and a section steel straightening method, lateral bending of straightened section steel can be effectively improved, and the length of a straightening blind zone of a main bend of the section steel is reduced, so that the section size of the section steel is better, the flatness is higher, the residual stress is smaller, and particularly height difference existing in rail level of the straightening blind zone and a straightening zone can be effectively reduced and the yield of a steel rail is increased when the steel rail is straightened.
Owner:CISDI ENG CO LTD
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