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1601results about How to "Guaranteed rigidity" patented technology

Method for manufacturing high-strength X80 steel spiral welded pipe

The invention discloses a method for manufacturing a high-strength (X 80) steel spiral weld pipe. The weld pipe adopts a parent metal of X 80 rolled steel plate, and the chemical compositions of weld pipe are: 0.02 to 0.09 percent of C, 0.10 to 0.42 percent of Si, 1.50 to 1.85 percent of Mn, less than or equal to 0.022 percent of P, less than or equal to 0.005 percent of S, less than or equal to 0.45 percent of Cr, less than or equal to 0.50 percent of Ni, less than or equal to 0.30 percent of Cu, less than or equal to 0.35 percent of Mo, less than or equal to 0.025 percent of Ti, less than or equal to 0.11 percent of Nb, less than or equal to 0.06 percent of V, less than or equal to 0.06 percent of Al, less than or equal to 0.008 percent of N, less than or equal to 0.0005 percent of B, and less than or equal to 0.23 percent of Pcm. The manufacturing procedures includes: decoiling, leveling, edge milling, prebending, molding, internal welding, external welding, pipe end expending, hierarchical ultrasonic examination of parent metal, X-ray examination of welded seam, hydraulic pressure test, ultrasonic examination of welded seam, pipe end chamfering, finished product examination, etc. The (X 80) steel spiral weld pipe( ID: 1219mm, thickness:18.4mm) manufactured by the invention successfully solves the problem of poor stability and unsatisfactory welded seam performance, etc. in the manufacturing process of the high-strength (X 80) steel spiral weld pipe, thereby greatly improving the pass-rate and working efficiency.
Owner:CNPC BOHAI EQUIP MFG +1

Large-scale numerical control gear machining machine tool

The invention provides a large-scale numerical control gear machining machine tool which has six numerical control coordinate axes, namely X, Y, Z, A, C1 and C2 and adopts a two plus four layout manner. A workpiece has two freedom motion, namely linear motion along the X axis and rotational motion around the C1 axis; and a tool has four freedom motion, namely linear motion along the X axis and the Z axis and rotational motion around the A axis and the C2 axis. The large-scale numerical control gear machining machine tool adopts a six-axis (X, Y, Z, A, CI and C2 axis) five-linkage (X, Y, Z, A and C2 axis linkage) structure; the five numerical control coordinate axes, namely the X, Y, Z, A and C2 axes carry out interpolation motion; and the indexing movement of the workpiece is controlled by the C1 axis to process all tooth surfaces. The rotational axis of the workpiece, namely the C1 axis only finishes the indexing movement and does not participate in the interpolation motion formed bythe tooth surfaces so as to improve the processing precision and the processing efficiency of a large-scale gear. The large-scale numerical control gear machining machine tool can be constructed intoa gear miller or a gear grinder, thereby realizing the curved surface machining of a cylindrical gear, a bevel gear, an impeller and others with the indexing features.
Owner:秦川机床工具集团股份公司

Aircraft skin mirror milling method and aircraft skin mirror milling device

ActiveCN104400086AReal-time thicknessReal-time thickness compensationAutomatic control devicesWorkpiecesSelf adaptiveAirplane
An aircraft skin mirror milling method and an aircraft skin mirror milling device. The device is characterized by mainly comprising a machine tool main framework, a milling apparatus, a vertical-horizontal conversion apparatus, a lug piece holding apparatus, a flexible adsorption apparatus, a top-shore apparatus, a detection apparatus and a thickness measuring apparatus. In the device, an aircraft skin is vertically clamped by the vertical-horizontal conversion apparatus for increasing the clamping efficiency of the aircraft skin and a positioning precision of the aircraft skin is further improved with combination of a vacuum adsorption apparatus so that deformation caused by gravity can be avoided. On the basis of on-line detection by a laser displacement sensor, actual curve surface of the aircraft skin can be detected before processing and aircraft skin processing tool path can be adjusted according to an actual clamping situation for achieving self-adapting numerically-control processing. The top-shore apparatus can support the aircraft skin from backside during a milling process of the aircraft skin, thereby avoiding vibration during processing and improving stability of processing. On-line monitoring of the thickness can be achieved during the processing and thickness compensation can be provided. By means of an integrated control system, cooperative operation of units in the machine tool can be ensured and interference can be avoided.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Vehicular suspension arm

A vehicular suspension arm is provided in which an arm main body (1) includes a main plate (2) press-formed as a main part of the arm main body and having a short cylindrical part (EB) provided integrally with one end by flanging, and a reinforcing plate (H) superimposed on one of upper and lower faces of the main plate (2) and reinforcing the main plate (2). The reinforcing plate (H) has an eye-shaped head part (Ha) formed in an annular shape and arranged coaxially with the short cylindrical part (EB), and a tail part (Hb) extending integrally from the eye-shaped head part (Ha) along the longitudinal direction of the main plate (2), is formed from a single plate material that is thicker than the main plate (2), and has at least the tail part (Hb) welded to the main plate (2). A bush press-fit portion (P1) is formed from an inner peripheral face of the eye-shaped head part (Ha) and an inner peripheral face of the short cylindrical part (EB). This ensures that the cross-sectional shape of a transition section from the bush press-fit portion to the plate-type arm main body is adequate, thus enabling the rigidity and strength required for the transition section to be easily guaranteed and, furthermore, it becomes possible to meet a requirement for increasing the strength of the arm without specially increasing the space around the outer periphery of the bush press-fit portion.
Owner:F TECH INC +1

High-precision vertical type machining center

The invention discloses a high-precision vertical type machining center comprising a pedestal, an upright column, a worktable, a spindle case, a PLC controller, a machining spindle component, a Y-axis movement mechanism, an X-axis movement mechanism and a Z-axis movement mechanism. The worktable comprises a saddle, a worktable plate, a telescopic protecting cover, and a sliding rail extension bracket. The saddle is installed on the Y-axis movement mechanism. The X-axis movement mechanism comprises a linear sliding rail and a sliding block. One end of the telescopic protecting cover is connected with the worktable plate; the other end is connected with the sliding rail extension bracket. The high-precision vertical type machining center is reasonable in structural design. An automatic control is conducted by the PLC controller, and the purpose of the automatic machining can be achieved by clamping once, with fast machining speed, high precision and good working stability. Moreover, by reasonably designing the worktable, the rigidity and the stability of the entire structure are increased, thereby effectively reducing the vibration. With the high machining precision, the stable running, and the good protecting effect, the cutting chips or other foreign materials are effectively prevented from dropping onto the guide rail, thus the service life is long.
Owner:普锐米勒机床(东莞)有限公司

Tip-extension type deep hole boring cutter rod

The invention relates to a tip-extension type deep hole boring cutter rod. A cutter seat (3) is positioned in a cavity between a press cover (1) and a gear installing seat (5), and a screw rod (11) connected with one end of a core shaft (10); a rack (6) is installed in a slot on one end of the core shaft (10); one inner edge of a cutter installing hole needs to be coincide with the symmetric center surface of double-row teeth; a cutter (2) is positioned in the cutter installing hole, and a tip is positioned on a center line of a processed hole; and gears (4) are respectively meshed with the double-row teeth of the rack and the cutter seat. The screw rod is rotated by rotating a handle (14) on the screw rod (11) to drive the core shaft (10) to move, and then the cutter tip is extended by the transmission among a thread pair, the rack, gears and the rack. When retracting, the tip enters the end part of an inner hole of a part; and when the tip extends out, the middle of the part is processed. By adopting a guiding block (9), the rigidity of the cutter rod is ensured, and the cutter rod is provided with axial scales and circumferential scales. The tip-extension type deep hole boring cutter rod is suitable for processing deep holes on both ends of a long-shaft part, wherein the deep holes have small inner diameters at two ends, large inner diameters in the middles and larger difference of diameter sizes.
Owner:AECC AVIATION POWER CO LTD

Display device

A structure holds a display panel arranged inside a cabinet from the both sides by means of a holding member and a frame portion, which are supported by the circumferential surface section, so as to reduce thickness and frame width without using a bezel and to ensure rigidity. The cabinet is provided with a frame portion positioned on the display surface side of the display panel, a circumferential surface portion positioned at the periphery of the display panel, and a rear surface portion covering the other surface side of the display panel. A protruding section is arranged on the outer circumference side of the periphery of the display panel and the holding member to extend from the display surface side of the display panel toward the side opposite to the display surface, on an inner surface of the frame portion. A reinforcing section is arranged for connecting the inner circumference section of the protruding section with the inner surface section of a frame portion. The protruding section is provided with connecting sections, which are integrally formed with the inner surface of the frame portion, annularly arranged on the outer circumference of the display panel, and integrally formed at a plurality of positions on the protruding section in the circumference direction. The holding member has a section to be connected with the connecting section.
Owner:SHARP KK

Power supply apparatus for vehicle

The invention provides a power supply apparatus for a vehicle, wherein the rigidity and the cooling performance of the support plate which supports and cools the battery modules. The support plate 11 supports the battery modules and includes a first plate (15) and a second plate (14). The first plate (15) thermally contacts bottom surfaces of the battery modules. The second plate (14) is placed on a bottom surface of the first plate to define cooling spaces where a coolant flows. The first reinforcing projections (14c, 14d) project into the cooling spaces and extend in in a flow direction of the coolant. The plurality of second reinforcing projections (15d) is provided on a top surface of the first plate (15) and extending in a direction crossing the flow direction of the coolant. Rigidity against bending of the support plate in two directions can be secured by the first reinforcing projections and the second reinforcing projections, and the first reinforcing projections projecting into the cooling spaces extend in the flow direction of the coolant, and the second reinforcing projections project out of the cooling spaces, and the second reinforcing projections (15d) project out of the cooling spaces. Therefore the first and second reinforcing projections do not interfere with the flow of the coolant, thereby securing the cooling performance.
Owner:HONDA MOTOR CO LTD

Thin-wall sleeve inner hole finish machining clamp and inner hole machining method

The invention relates to a thin-wall sleeve inner hole finish machining clamp and an inner hole machining method. A locating base is composed of a small cylinder A and a big cylinder in an integrated mode. The right end of an inner cavity of the big cylinder is a circular conical surface. The left end of the inner cavity of the big cylinder is a round hole. A transition step surface B is arranged between the round hole formed in the left end and the circular conical surface at the right end. The right end of the big cylinder is provided with external threads. An outer circular conical surface of an elastic lining and the right end of an inner cavity of the locating base 1 are mutually matched at the taper of 1:10. A thin-wall sleeve is arranged in an elastic lining cylindrical surface inner hole. The elastic lining and the left end of the thin-wall sleeve abut against the transition step surface B. A rubber gasket is installed at the right end of the thin-wall sleeve. Inner threads of an end cap are matched with fine pitch external threads at the right end of the locating base. The thin-wall sleeve is pressed tightly through the rubber gasket. A cut being 2mm is formed in the side wall of the elastic lining. When the thin-wall sleeve inner hole finish machining clamp is applied to the machining of a thin-wall inner hole, the rigidity of the thin-wall sleeve is guaranteed when inner hole fine machining is conducted, deformation generated in the process of clamping and machining is avoided, the product percent of pass reaches over 95%, the production cost is reduced, the production efficiency is improved, and economic benefits are increased.
Owner:JIANGXI HONGDU AVIATION IND GRP

Pressure pipe radial vibration damping force stilling support

ActiveCN102297291AVibration stress reliefGuaranteed rigidityPipe supportsRadial vibrationPressure pipe
The invention relates to a radial vibration-reducing stress-dissipating bracket for a pressure pipeline. The radial vibration-reducing stress-dissipating bracket for the pressure pipeline comprises a lower supporting block (9) and a lower bottom plate (13); the pressure pipeline (15) is supported on the lower supporting block (9); and the lower supporting block (9) is supported on the lower bottom plate (13). The radial vibration-reducing stress-dissipating bracket for the pressure pipe is characterized in that vertical type fixing brackets (11) are symmetrically arranged at two sides of the lower bottom plate (13); two radial clamping blocks (1) which are matched with the two sides of the pressure pipeline (15) are respectively connected with corresponding supporting plates (8); the supporting plates (8) are connected with corresponding vertical type fixing brackets (11) through respective fastening connecting pieces (7); and elastic supporting assemblies (20) are mounted on the fastening connecting pieces (7) and between the vertical type fixing brackets (11) and the supporting plates (8). With the adoption of the radial vibration-reducing stress-dissipating bracket for the pressure pipe, the rigidity of a piping system can be maintained and a vibrating stress generated in the radial direction of the piping system can be eliminated, thus the requirement of vibration-reducingsupport for the pressure pipeline can be satisfied.
Owner:JINAGSU SUNPOWER PIPELINE ENG TECH CO LTD

Novel integral turning method of blades

The invention provides a novel integral turning method of blades, which can effectively solve the problem of insufficient pressing force of the blades during the assembly machining of the blades in the past and also overcome the defect of insufficient rigidity caused by interrupted cutting. The novel integral turning method of the blades is simple and can greatly enhance machining efficiency. The novel integral turning method of the blades is characterized by comprising the following steps of: positioning the blades by simulating an assembling state, and pressing the positioned blades on a turning jig by using a press plate; then pouring a low-melting-point alloy between the blades and the turning jig; disassembling the press plate after the low-melting-point alloy is cooled and solidified; firmly bonding the blades and the turning jig depending on the low-melting-point alloy so that an integral rigid part is formed by the blades and the turning jig, and then carrying out assembly machining on the blades; and after the blades are subjected to the assembly machining, placing the blades and the turning jig into hot water so that the blades and the turning jig are separated because the solid low-melting-point alloy is melted when heated, and therefore the assembly machining of the blades is completed.
Owner:WUXI TURBINE BLADE

High-speed low-shrink low-smoke zero-halogen tight-buffered material used for 4G optical cable and preparation method of high-speed low-shrink low-smoke zero-halogen tight-buffered material

The invention discloses a high-speed low-shrink low-smoke zero-halogen tight-buffered material used for a 4G optical cable and a preparation method of the high-speed low-shrink low-smoke zero-halogen tight-buffered material. The tight-buffered material is composed of the following raw materials in parts by weight: 30-60 parts of ethylene-vinyl acetate copolymer, 10-20 parts of linear low density polyethylene, 20-30 parts of high density polyethylene, 10-30 parts of compatilizer, 100-150 parts of filler-type flame retardant, 25-60 parts of synergistic flame retardant, 1-2 parts of silane coupling agent, 2-5 parts of ultra-high molecular weight silicone master batch, 0.5-1 part of amides high-performance lubrication dispersant and 0.2-0.5 part of compound antioxygen through stirring, mixing and extruding steps. The tight-buffered material prepared by elaborate formula selection and processing is low in shrinking percentage, strong in rigidity, high in hardness, high in extrusion molding speed, low in rejection rate and good in high / low temperature cycling resistance. When the tight-buffered material is processed, die orifice stacking and salivation are less, the surface of the optical cable is smooth, fine and particle-free, and the tight-buffered material is easy to peel.
Owner:JIANGSU LINRY NEW MSTAR TECH

Vehicular suspension arm

A vehicular suspension arm is provided in which an arm main body (1) includes a main plate (2) press-formed as a main part of the arm main body and having a short cylindrical part (EB) provided integrally with one end by flanging, and a reinforcing plate (H) superimposed on one of upper and lower faces of the main plate (2) and reinforcing the main plate (2). The reinforcing plate (H) has an eye-shaped head part (Ha) formed in an annular shape and arranged coaxially with the short cylindrical part (EB), and a tail part (Hb) extending integrally from the eye-shaped head part (Ha) along the longitudinal direction of the main plate (2), is formed from a single plate material that is thicker than the main plate (2), and has at least the tail part (Hb) welded to the main plate (2). A bush press-fit portion (P1) is formed from an inner peripheral face of the eye-shaped head part (Ha) and an inner peripheral face of the short cylindrical part (EB). This ensures that the cross-sectional shape of a transition section from the bush press-fit portion to the plate-type arm main body is adequate, thus enabling the rigidity and strength required for the transition section to be easily guaranteed and, furthermore, it becomes possible to meet a requirement for increasing the strength of the arm without specially increasing the space around the outer periphery of the bush press-fit portion.
Owner:F TECH INC +1

Long-cantilever large-scale integral blade-disc blade one-step milling method

ActiveCN104475841ASolve the long hanging problemIncrease overhangWorkpiecesMilling equipment detailsMachining vibrationsMilling cutter
The invention provides a long-cantilever large-scale integral blade-disc blade one-step milling method and belongs to the technical field of aeroengines. The long-cantilever large-scale integral blade-disc blade one-step milling method comprises the following steps of 1, cutter selection, 2, five-axis processing anti-interference calculation, 3, five-axis processing cutter locus design: 1), integral spiral cutter locus design and 2), blade root and channel cutter locus design, and 4, milling. The long-cantilever large-scale integral blade-disc blade one-step milling method adopts an integral spiral milling cutter locus mode, realizes precise milling of blades by one-step clamping, eliminates secondary clamping errors, prevents butt joint milling gear marks and effectively control processing deformation. A gradient cutter handle is used, stretches into a cavity groove and carries out milling so that the overhanging length of the cutter is at most shortened by 4 times than that of the cutter with the same size, processing vibration is effectively controlled, blade surface vibratory lines are eliminated and part surface quality is improved by one grade. Through the long-cantilever large-scale integral blade-disc blade one-step milling method, the non-standard cutter is changed to form a standard cutter so that all milling cutter standardization is realized, milling efficiency is greatly improved and machining efficiency is improved by 33%.
Owner:SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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