103results about How to "Avoid precision errors" patented technology

The invention discloses a five-axis linkage machine tool RTCP dynamic precision calibrating apparatus and a calibrating method thereof. The apparatus comprises a support, and a first face contact type dial gauge and a second face contact type dial gauge both arranged on the support. The central axes of the two face contact type dial gauges are perpendicular to each other and located in the same plane. The apparatus satisfies the following formula: d1=d2<=r-3mm. d1 is the distance between the measuring end face of the first face contact type dial gauge to the vertically intersecting point of the central axes of the two face contact type dial gauges. d2 is the distance between the measuring end face of the second face contact type dial gauge to the vertically intersecting point of the central axes of the two face contact type dial gauges. r is the bulb radius of a bulb test rod for calibration. By using the two face contact type dial gauges arranged on the support, the apparatus prevents complex equation solving processes, conventional dial gauge calculating errors and measuring geometric errors, and complex operations during a conventional calibration method using process. The calibration efficiency and the calibration precision are thus greatly improved. The invention further discloses a calibrating method for the five-axis linkage machine tool RTCP dynamic precision calibrating apparatus.

The invention discloses a pose adjusting ball device for airplane assembly and belongs to the field of airplane manufacturing equipment. The defects that errors are large and the stress of the connecting portion is large exist in the airplane body pose adjustment process due to the adoption of a special fixture or a jack manual operation manner currently. The pose adjusting ball device comprises a ball socket seat and an installation seat used for being connected with and supporting an airplane body. A connecting flange is arranged at the upper portion of the installation seat and the lower portion of the installation seat is fixedly connected with a ball through a connecting rod. An installation seat installation cavity is formed in the center of the ball socket seat. A ball socket corresponding to the ball is arranged at the lower portion of the installation cavity. The installation seat is installed in the ball socket seat. Three clamping devices are evenly arranged on the sides of the ball socket seat in the circumferential direction. An in-position detection switch is arranged at the bottom of the ball socket seat. The pose adjusting ball device is combined with a three-coordinate numerical control locator, accuracy errors existing in manual pose adjustment are effectively avoided, airplane assembly automation and intelligence are improved, and the pose of the airplane body can be better adjusted in six directions.

The invention discloses a three-dimensional image shooting device comprising a guide rail (1), a bracket (2) for supporting the guide rail, a worktable (3), a driving motor (4), a camera and a controller. The worktable (3) is arranged on the guide rail (1) and can slide along the guide rail (1), the driving motor (4) drives the worktable (3) to slide, the controller (8) is electrically connected with the motor (4), the guide rail (1) is a linear guide rail, and the camera (7) is fixedly connected with the worktable (3). By adopting the three-dimensional image shooting device, the camera slides on the linear guide rail along with the worktable and continuously shots a plurality of images at different angles; the vision angles of the obtained images can be adjusted through software so as to meet the need for combining three-dimensional images; the linear guide rail is adopted to decrease the cost of the shooting device and omit the fine tuning of the angle and the focus as compared with a curve guide rail; and the camera and the worktable are directly fixed to avoid accuracy error and shooting joggling brought by the rotation of a camera in the prior art and ensure good shooting effect.

The invention discloses an antisymmetric parallel connection direct drive motion decoupling high-precision servo platform. The antisymmetric parallel connection direct drive motion decoupling high-precision servo platform comprises a base, a movement flat plate, a first guide rail and a second guide rail; the first guide rail and the second guide rail are both fixed to the movement flat plate and are perpendicular to each other; the base is provided with a first slide rail parallel to the first guide rail and a second slide rail parallel to the second guide rail; the first slide rail and the second slide rail are each provided with a linear driving device in a matched manner; the first slide rail and the second guide rail are connected through a first slider; the second slide rail and the first guide rail are connected through a second slider; the linear driving device on the first slide rail drives the first slider to move so as to drive the movable flat plate to move in the X direction; and the linear driving device on the second slide rail drives the second slider to move so as to drive the movable flat plate to move in the Y direction, and therefore motion decoupling in the two movement directions of X and Y is achieved.

The invention discloses a three-component directional correction method of a submarine node seismograph. The method comprises the following steps: (1) arranging a shot point and a submarine node, andcollecting seismic wave data; (2) obtaining a covariance matrix of a preliminary wave; (3) converting the covariance matrix of the preliminary wave, and obtaining a polarization vector of the preliminary wave; (4) obtaining a correction rotating angle; and (5) collecting the seismic wave data collected by the submarine node. According to the three-component directional correction method disclosedby the invention, the three-component directional correction is performed by using the polarization characteristics of the refracted waves, and the problems of insufficient accuracy and limitation ofthree-component redirection by using direct waves can be solved.

The invention discloses a flat-plate double-side drill jig, which comprises a bottom plate, first mounting plates, fixed blocks, second mounting plates, a first air cylinder, a second air cylinder, vertical posts, rotating disks, sensors, a third air cylinder and a lifting plate. The first mounting plates are disposed on the upper surface of the bottom plate in vertical symmetry, and the second mounting plates are disposed on the upper surface of the bottom plate in bilateral symmetry. One reversible fixed block is mounted at the inner end of each first mounting plate. The first air cylinder and the second air cylinder horizontally mounted are disposed on the second mounting plates. At least two vertical posts are disposed on the bottom plate in bilateral symmetry. One rotatable rotating disk is disposed at the upper end of each vertical post. Two sensors are disposed at the left lower end and the right lower end of each vertical post. The third air cylinder vertically mounted is disposed on the bottom plate. The lifting plate is disposed on the third air cylinder. The flat-plate double-side drill jig is convenient in operation. After a flat plate to be drilled on both sides is set, both-side drilling can be performed without secondary mounting, so that precision errors caused by repeated mounting is avoided and machining precision of the flat plate is improved.

The invention discloses an anti-smearing paper flattening device applicable to a quality detection system of a dry offset press. The anti-smearing paper flattening device comprises a hollow spoke type roller of the dry offset press and a plurality of strip-shaped paper flattening sheets, wherein the hollow spoke type roller comprises a plurality of circular spoke sheets which are coaxially and fixedly connected with a central shaft of a paper outlet chain wheel and are distributed along the central shaft at equal intervals; each spoke sheet corresponds to one flattening sheet; each flattening sheet and the corresponding spoke sheet are located on a same plane; each flattening sheet is divided into an upper section, a middle section and a lower section; the arc-shaped sides, matched with the outer edges of the spoke sheets, of the upper sections and the middle sections of the flattening sheets lean against print products on the outer edges of the spoke sheets, and a shooting gap is formed between the arc-shaped sides and the print products; the lower sections of the flattening sheets are used for guiding the print products out to a paper chain channel. According to the anti-smearing paper flattening device applicable to the quality detection system of the dry offset press, moving tracks of paper on the dry offset press are limited by the flattening sheets, so that irregular bend, deformation, floatation and the like of the print products in a detection position are avoided, and the detection accuracy of the print products is further improved.

The invention discloses a mechanical sealing device of a high-pressure water injection pump. A shaft sleeve is provided with a step, a movable ring assembly is fixed on the outer wall of the shaft sleeve, one end of the movable ring assembly is abutted against the step, an elastic compensation assembly comprises a stationary ring seat, a stationary ring which is embedded on the stationary ring seat, an anti-rotation pin which is arranged on the stationary ring seat and a plurality of small springs, a sealing gland bush is provided with an axial accommodating hole, a plurality of spring holes are uniformly distributed on the circumference, the anti-rotation pin is plugged into the accommodating hole and can float in the axial direction, the small springs are arranged inside the spring holes, one end of each small spring is abutted against the stationary ring seat, the tail end of the stationary ring seat stretches out of the sealing gland bush, the tail end of the stationary ring seat is provided with a clamping spring, the elastic compensation assembly is pre-installed on the sealing bland bush, the inner wall of the sealing gland bush is fixedly provided with a distribution ring, and a plurality of injection holes are uniformly distributed on the distribution ring. The elastic compensation assembly is installed in a stationary manner and free from the influence of centrifugal force, the small springs which are uniformly distributed can result in good floatability, the elastic compensation assembly is pre-installed in the sealing gland bush through the clamping ring, and the injection holes which are uniformly distributed can realize multipoint washing, so that uniformity in cooling can be realized.

A light emitting diode packaging method comprises the steps of 1 providing a first viscous film layer and arranging multiple light emitting diode crystal grains on the first film layer; 2 forming a packaging layer on the first film layer and enabling the packaging layer to cover the multiple light emitting diode crystal grains; 3 cutting the packaging layer between every two light emitting diode crystal grains so as to form a cutting way, wherein a light emitting diode unit is formed between every two adjacent cutting ways; 4 providing a second viscous film layer, transferring the light emitting diode units to the second film layer; 5 forming multiple connected optical lenses on the second film layer, wherein each optical lens corresponds to one light emitting diode unit and wraps the light emitting diode unit; 6 removing the film layer; 7 cutting the multiple connected optical lenses so as to obtain multiple light emitting diode packaging bodies.

The invention discloses a side hole forming and deep drawing type progressive die which comprises a deep drawing device and a side hole forming device, wherein the deep drawing device is arranged in a deep drawing station and is used for deep drawing a material tape; the side hole forming device is used for side hole forming on material tape drawing and a side wall, and the side hole forming device is arranged on a station in the deep drawing device and comprises a station arrangement structure, an elastic structure, an upper die, an lower die, an unloading structure and a punching structure for punching side holes. Because a deep drawing die and a punching die are assembled to form the progressive die of the invention, the invention has greatly improved machining efficiency and can realizes fast and large-scale production and timely product supply compared with the traditional multiple-die single-procedure machining mode; meanwhile, labor cost is greatly reduced, and an operator can be more relaxed. In addition, an accuracy error caused by moving a workpiece blank among different stations is also avoided so that machining accuracy is higher and quality stability is better.

The invention discloses a thinning extrusion drawing process adopted in the moulding of a force output plate product and a force output plate progressive die thereof. The thinning extrusion drawing process comprises processes of drawing, extrusion, end surface moulding, blanking, and the like. The force output plate progressive die comprises a drawing device for drawing a material belt and also comprises a punching device, a multi-thinning extrusion device, a cylindrical end surface moulding device and a blanking delivery plate. By combining the processes of drawing, extrusion, end surface moulding, blanking, and the like in a die, compared with the traditional processing way realized by adopting a single procedure and a plurality of dies, the technical scheme of the invention greatly improves the productivity and is suitable for mass production. In addition, the invention also prevents a precision error brought by shifting workpiece blanks among different stations, therefore, the processing precision is higher, and the quality stability is better.

The invention discloses a side punching type progressive die for bending forming of a rocker arm body. The side punching type progressive die comprises bending forming devices arranged on a bending forming station for conducting bending forming on a material belt, and a side punching device inclined towards the punching station and arranged behind the bending forming station. At least two sets of bending forming devices are arranged, and two or more steps are needed for bending forming. The side punching device is used for punching symmetric side holes in the side wall of a part blank obtained after bending forming of the material belt and comprises an upper die, a lower die, a discharging structure and a lateral punching structure. Due to the fact that the side punching type progressive die for bending forming of the rocker arm body is formed by combining bending forming dies and lateral punching dies, compared with an existing manner of machining this kind of parts through multiple pairs of dies and a single process, the machining efficiency is greatly improved, and the requirement for mass production can be met; meanwhile, the labor cost is greatly reduced, and an operator conducts operate more easily; and in addition, precision errors caused by carrying of the workpiece blank between among stations are avoided, and therefore the machining precision is higher, and the quality stability is also better.

The invention discloses a multi-angle adjustable cutting device for mechanical engineering manufacturing. The multi-angle adjustable cutting device comprises a cutting plate, a cutting tool adjustingmechanism, a limiting adjusting mechanism, a pushing mechanism and a fixing mechanism; a cutting groove is formed in the cutting plate, and a first penetrating hole and a second penetrating hole are formed in one side of the cutting groove side by side; a first penetrating hole and a second penetrating hole are formed in the cutting plate, two limiting grooves are formed in one end of the cuttinggroove, and limiting grooves are formed in the cutting plate; and the cutting tool adjusting mechanism is arranged below the cutting plate, the limiting adjusting mechanism is arranged above the cutting plate, the pushing mechanism is installed on the limiting adjusting mechanism, the fixing mechanism is arranged on the outer side of the limiting adjusting mechanism, and the fixing mechanism is arranged on the upper surface of the cutting plate. The pushing mechanism is adopted for controlling the movement of the rear half section during raw material cutting, an operator is prevented from making contact with a cutter in a close distance, and the operator is protected.

The invention discloses a non-surface consistency static correction method based on equivalent speed and belongs to the field of seismic exploration. The method comprises the following steps that: theequivalent speed of seismic waves transmitted from the ground to a static correction surface H is calculated according to a near-surface model; an offset distance mapping relation between an offset distance before static correction and an offset distance after static correction under the condition of the transmission of seismic waves along an actual propagation path is constructed according to the equivalent speed, and a travel time mapping relation between travel time before static correction and travel time after static correction under the condition of the transmission of the seismic wavesalong the actual propagation path is constructed according to the equivalent speed; and the offset distance and travel time of the seismic waves under the condition of the transmission of seismic waves along the actual propagation path are calculated according to the offset distance mapping relation and the travel time mapping relation. With the non-surface consistency static correction method based on the equivalent speed adopted, precision errors caused by the vertical transmission of seismic waves assumed by conventional static correction are avoided. Compared with the conventional staticcorrection, the method has higher precisions, can better keep an accurate space-time distance relation, and meanwhile can better guarantee subsequent imaging precision.

The invention discloses a fiber-optical array connector making method of optical communication, which comprises the following steps: combining the femtosecond laser illuminating and chemical disposal method to produce the array through-hole in the base plate; plugging and fixing the optical fiber in the through-hole to prepare the fiber-optical array connector. The method prevents the traditional method from preparing mould and sintering the blank, which simplifies the manufacturing technology and improves the gap precision.

The invention discloses electronic component mobile test equipment, which structurally comprises a detection table, an electric controller, a working bracket, a data display screen and an electric test pen, wherein the lower surface of the detection table is fixedly connected with the surface of the working bracket in an embedded manner, the left side of the working bracket is fixed with the surface of the tail end of the electric controller through a bolt, the inner side of the electric controller is movably matched with the interior of the data display screen, the whole data display screen is connected with the surface of the working supporting frame in a nested mode, the top end of the electric testing pen is in clearance fit with the surface of the detection table, the detection table comprises a testing groove, an equipment sleeve table and a table supporting plate, and the surface of the table supporting plate is connected with the bottom part of the equipment sleeve table in an embedded mode. The electronic component mobile test equipmentimproves the handle holding hand feeling of an operator through using a balance strip, when testing is needed, a user only needs to hold and press the balance strip with a hand to enable an internal movable block to go down a slope inwards to stretch a rope and a stabilizing rod, an internal lead block drives a lower end pressing rod column to movably extrude an internal hook spring in a displacement cavity for pressure decomposition, the stability of the electric testing pen is improved, and the problem of element precision error of the test equipment caused by shaking is effectively avoided.