25 results about "Shape deviation" patented technology

The invention relates to the technical field of shape deviation detection, in particular to a pressure vessel shape deviation detection device and method based on laser scanning, the pressure vessel shape deviation detection device comprises a handheld laser 3D scanner and further comprises a frame body, the side, close to a vessel tank, of the frame body is detachably connected with the scanner, and equidistant assemblies are symmetrically installed on the frame body; the ends of the two equidistant assemblies are in contact with the surface of the container tank, the two equidistant assemblies and the scanner form a triangle, and laser emitted by the scanner is perpendicular to the midpoints of the two equidistant assemblies; the ends of the two rotating pieces are attached to the peripheral face of the container tank, it is guaranteed that the distance between the scanner and the container tank is not changed, meanwhile, it can be guaranteed that the central axis of the container tank, the generatrix of the container tank and the path of laser emitted by the scanner are located on the same plane, and therefore the problem that in the prior art, due to distance measurement and scanning angle changes, the scanning precision is poor is solved. And the cylindrical container tank part is not scanned, so that repeated scanning is needed.

The invention discloses a self-adaptive gluing method and device, equipment, a storage medium and a program product, and relates to the technical field of automatic control, and the self-adaptive gluing method comprises the steps that shape deviation values corresponding to different positions on a first surface to be glued are obtained, and the shape deviation values represent the flatness of the different positions on the first surface; and based on the morphology deviation values corresponding to the different positions on the first surface, gluing is conducted on the different positions on the first surface. According to the method, the flatness represented by the morphology deviation values of the different positions of the first surface is referred to, self-adaptive gluing is dynamically carried out on the different positions of the first surface, for example, the gluing amount is increased at the concave position of the surface, the gluing amount is reduced at the convex position of the surface, the whole glued surface can be flat, and the gluing efficiency is improved. The automatic gluing device solves the problem of local accumulation or vacancy of glue, can effectively adapt to automatic gluing of uneven surfaces, is good in gluing effect, can effectively improve the utilization rate of the glue, and saves the gluing cost.

A steel truss beam manufacturing line shape deviation calculation method, device, equipment and storage medium. The steel truss beam manufacturing line shape deviation calculation method comprises: measuring the steel truss beam segment after manufacturing to obtain the chord length manufacturing error of each steel truss beam; deleting the bridge load and structural unit irrelevant to the calculation of the steel truss beam manufacturing line shape deviation in the bridge model to obtain a processed bridge model; applying the chord length manufacturing error of the steel truss beam to the chord unit of the corresponding splice joint of the processed bridge model; and calculating the steel truss beam manufacturing line shape deviation based on the processed bridge model to which the chord length manufacturing error is applied. The application can calculate the steel truss beam manufacturing line shape deviation based on the processed bridge model to which the chord length manufacturing error is applied; and the bridge model is processed, the bridge load and part of the irrelevant unit are deleted, the calculation speed of the steel truss beam manufacturing line shape deviation can be improved, and the manufacturing line shape deviation can be calculated quickly and conveniently.

The invention relates to the technical field of bending devices, and discloses a high-quality copper heating wire bending device which comprises a bottom plate, a heat preservation cover is fixedly connected to the top of the bottom plate, an air cylinder is fixedly connected to the inner wall of the bottom plate, a pressing rod is fixedly connected to the output end of the air cylinder, and a bending block is fixedly connected to the top of the bottom plate. A baffle block is fixedly connected to the top of the bottom plate, a fixing frame is fixedly connected to the right side of the bottom plate, a first sliding rod is slidably connected to the inner wall of the fixing frame through a spring, and a movable plate is fixedly connected to the circumferential surface of the first sliding rod. The bending angle of the electric heating wire can be kept, it is ensured that the bending angle, radius and other dimensions of the electric heating wire are accurate, the design requirement is met, shape deviation caused by springback is avoided, and the product consistency and the yield are improved.

The invention provides a high-precision grinding wheel dressing method for workpiece machining in the aviation field, and belongs to the technical field of aeronautical manufacturing. The method comprises the steps that target geometrical shape data of a target grinding wheel are obtained, standard geometrical shape data of a standard grinding wheel are compared with the target geometrical shape data, and geometrical shape deviation data are obtained; based on the geometrical shape deviation data and the target geometrical shape data, a dressing path and dressing parameters of the target grinding wheel are generated; based on the finishing path and the finishing parameters, finishing equipment is controlled to finish the target grinding wheel; obtaining multi-modal sensing data in the finishing process, and analyzing the multi-modal sensing data to obtain an analysis result; and adjusting a finishing path and / or finishing parameters based on the analysis result until the geometrical shape of the target grinding wheel meets the preset precision requirement and the surface state of the grinding wheel meets the machining requirement of workpieces in the aviation field. The precision and efficiency of grinding wheel dressing are improved.

In order to recognize a shape deviation of an inspection object from a three-dimensional target geometry in three dimensions, three-dimensional, back-projections onto the three-dimensional target geometry are determined by at least one processing circuit, wherein a back-projection onto at least a part of the three-dimensional target geometry is determined for each of several two-dimensional images of the inspection object. The back-projections determined for the several two-dimensional images are compared by the at least one processing circuit in order to recognize the shape deviation.

The invention relates to the technical field of wind driven generators, and particularly discloses a multi-degree-of-freedom mechanical braking device for a wind driven generator. The overturning element is arranged at the top end of the supporting element; the clamping element is positioned at the top end of the overturning element; wherein the clamping element comprises a center cone, the center cone is movably arranged in the axial direction, and the outer conical surface of the center cone is matched with the inclined plane sliding block, so that the axial movement of the center cone drives the clamping jaw unit to synchronously and radially stretch out and draw back, and self-centering clamping is achieved; the clamping jaw unit can automatically adapt to the rotor diameter difference and the non-standard curved surface contour by combining the deformation compensation capacity of the elastic connecting block, when the rotor is eccentric or has appearance deviation, the contact position of each clamping plate is independently adjusted, the clamping force is automatically balanced through differential compression of the spring, and the unbalance loading risk is eliminated.

The present invention relates to a method, a computer program with instructions, and a device for correcting shape deviations of a mirror. In a first step, shape deviations of the mirror are determined (S1). Subsequently, correction values ​​for correcting the shape deviations are calculated (S2). The correction values ​​are then applied by heating a back surface of the mirror in a location-dependent manner (S3). A control measurement can then be carried out on the mirror (S4). The invention also relates to a mirror in which shape deviations have been corrected by such a method or by such a device.

The application provides a strip plate shape and thickness comprehensive control method. The method comprehensively considers the influence of the reduction adjustment, the roll inclination adjustment and the roll bending adjustment on the plate thickness, the primary plate shape and the secondary plate shape. By changing the reduction amount, the roll inclination amount and the roll bending amount respectively, the corresponding plate thickness, primary plate shape and secondary plate shape change amount is calculated, the influence coefficient of the reduction adjustment, the roll inclination adjustment and the roll bending adjustment on the plate thickness, the primary plate shape and the secondary plate shape is obtained, the influence matrix is formed, then the influence matrix is inverted to obtain the control matrix, when the plate thickness, the primary plate shape and the secondary plate shape produce deviation, the reduction, the roll inclination and the roll bending adjustment amount can be quickly calculated according to the control matrix, so that the plate thickness precision and the plate shape quality are good. The advantage of the application is that the three control means of the reduction, the roll inclination and the roll bending are closely matched, the plate thickness, the primary plate shape and the secondary plate shape deviation can be eliminated simultaneously without introducing a complex decoupling link, the control speed is fast and the precision is high.

This invention discloses a bending center mold with a fixed force application point and adaptive locking for shape deviations, comprising a mold body, a connecting block, and a mold clamping assembly. The mold body is inserted into the connecting block, forming a bearing mating surface and a positioning mating surface. The mold clamping assembly includes an adaptive clamping pin, a wedge block, and a wedge block pressing component. The adaptive clamping pin is embedded in the vertical wall of the mold body facing the clamping groove and can rotate freely. The wedge block is inserted into the clamping groove on the outside of the mold body, with one side of the wedge block contacting the adaptive clamping pin and the other side of the wedge block forming a clamping mating surface with the inner wall of the clamping groove. The angle between the clamping mating surface and the positioning mating surface does not exceed 40°, enabling self-locking. The wedge block pressing component is used to drive the clamping of the wedge block. This invention can adaptively handle manufacturing deviations, and the fixed point of application of the clamping force allows it to adapt to changes in the position and magnitude of the force under different working conditions.

A method of producing a tooth surface on a gear tooth by controlled removal of stock material from a process gear with a tool, wherein the process gear and the tool are movable relative to each other along and / or around a plurality of axes. The tool and the process gear are engaged with each other and then moved relative to each other with a generating motion along and / or around the plurality of axes. Stock material is removed from the process gear to produce the tooth surface on the process gear. The generating motion along and / or around the plurality of axes includes a motion along and / or around at least one of the axes, wherein the motion is defined by a function having a primary component and a secondary component. The primary component defines a maximum tooth surface shape deviation magnitude for each tooth of the process gear, and the secondary component defines a modification to the tooth surface for each tooth of the process gear.

This invention relates to the field of mold surface technology, and in particular to a mold surface compensation design method and apparatus. The method includes: S100 obtaining the initial deviation displacement H. k,0 S200 obtains the deviation displacement H k S300 obtains dimensionless parameter F obj S400 obtains the optimal compensation factor. This invention replaces previous experimental measurements, eliminates the need to reconstruct the mold surface, and reduces post-demolding shape deviation displacement by over 90%, saving significant funds and time.

The application discloses a sand mold without parting surface and a manufacturing and casting method thereof and a casting, and belongs to the casting technical field. First, a modeling mixture is used to manufacture an integral green sand blank, and the integral sand blank is dried to obtain an integral sand blank, then the integral sand blank is machined based on the idea of subtractive manufacturing, and on the basis, the near net shape is realized to integrally model the sand mold without parting surface, and the casting is carried out by using the sand mold without parting surface to obtain the casting. The application does not need to manufacture a mold sample and a core box, and does not have the assembling process of the parting and the sand mold and the sand core, thereby simplifying the casting process and the mold structure design, avoiding the problems of the size and shape deviation of the casting caused by the assembling dislocation during the molding or the floating of the mold core during the casting. The formed casting has high size precision, accurate shape, high material utilization rate and small subsequent mechanical machining allowance, and the casting production cycle is short and the process yield is high, so that the production cost is greatly reduced. The application is especially suitable for the sand mold casting of the complex and precise casting.

To provide a double-sided polishing device that can suppress a workpiece shape deviation from a target shape after completion of final polishing and achieve a desired workpiece shape, a control device (30) configured to control a polishing machine (10) based on measurement results from a thickness measuring device (20) comprises: a first learning device (31) that has learned a correlation between a main polishing condition, an outer edge flatness, and an in-plane flatness; a second learning device (32) that has learned a correlation between an endpoint polishing condition, a degree of change in the in-plane flatness when the main polishing is complete, a degree of change in the outer edge flatness when the main polishing is complete, and an amount of change in the outer edge flatness during endpoint polishing; and a main polishing condition correction section (33) configured toto correct the main polishing condition at a time of correction by the main polishing condition, which is obtained by inputting into the first learning unit (31) a setpoint for the outer edge flatness and a correction setpoint for the in-the-plane flatness, which are obtained from a learning result of the first learning unit (31), and a main polisher termination condition setting section (34) which is configured to set a main polisher termination condition using the change amount of the outer edge flatness obtained from a learning result of the second learning unit (32).

This application provides a method, apparatus, and system for high-precision assembly quality control of aerospace composite materials, relating to the fields of aerospace manufacturing assembly and intelligent control technology. The method includes: acquiring the initial shape deviation between the current shape of the section to be assembled and the target shape; controlling each actuator in the actuator array to apply test loads in a preset order, recording the displacement data of each actuator, and identifying the local response matrix between the actuators; inputting the local response matrix into a pre-constructed joint Bayesian prior model to calculate the global response matrix of the section to be assembled, and calculating the optimal actuator control force vector based on the initial shape deviation and the global response matrix. The method, apparatus, and system for high-precision assembly quality control of aerospace composite materials provided by this application can fully utilize the sensing function of the actuators to quickly identify the stiffness characteristics of each section without adding additional external measurements, thereby achieving efficient and high-precision shape control.

The invention relates to a method for separating a plurality of slices from a workpiece (4) by means of a wire saw, wherein a wire grid (2) is tensioned in the plane between two wire guide rollers (1), and wherein each of the two wire guide rollers (1) is mounted between a fixed bearing (5) and a floating bearing (6). The method comprises transporting the workpiece (4) through the wire grid (2) by controlling the temperature of the fixed bearing (5) with a cooling fluid according to a specification of a first temperature profile while moving the floating bearing (6) axially, and moving the workpiece (4) along the workpiece axis simultaneously by means of a control element according to a specification of a second correction profile, determining a shape deviation, and adjusting operating parameters depending on the cutting depth.

The utility model belongs to the technical field of aluminum material processing equipment, and particularly relates to a rounding machine for aluminum profile processing, which comprises a machine table, a roller group and an auxiliary supporting wheel, the roller group is arranged on the front side of the machine table and comprises a plurality of groups of conveying rollers and a group of bending rollers, in the bending rollers, the upper rollers are fixed wheels, and the lower rollers are movable wheels. The movable wheel can move and be adjusted along an arc-shaped track with the fixed wheel as the circle center, so that the movable wheel abuts against the aluminum profile and is bent, the auxiliary supporting wheel can sense the position of the bent aluminum profile, the position of the supporting wheel is adjusted, the supporting wheel is attached to the surface of the aluminum profile, shape deviation caused by material springback is eliminated, precision is improved, and production efficiency is improved. According to the aluminum profile bending and rounding device, bending and rounding operation can be conducted on aluminum profiles, the surfaces of the aluminum profiles are not prone to being extruded and deformed, and the bending precision can be guaranteed through the auxiliary supporting rollers.

In order to identify a shape deviation in 3D of an examination object (11) from a three-dimensional (3D) target geometry (33), a back projection onto the 3D target geometry (33) is determined by at least one processing circuit (34), the back projection onto at least a portion of the 3D target geometry (33) being determined for each of a plurality of 2D images of the examination object (11). The back projections determined for the plurality of 2D images are compared by the at least one processing circuit (34) in order to identify the shape deviation.

The present application relates to the field of precision ball screw manufacturing, and discloses a multi-raceway machining quality control method for a precision ball screw, which comprises the following steps: obtaining a surface detection image of a multi-machining track surface, processing the surface detection image through a feature extraction network to obtain a geometric deviation feature vector representing the geometric shape deviation degree of the machining track; obtaining the spatial position difference value, and if the spatial position difference value exceeds a preset position threshold, generating a deformation misplacement sequence data structure recording the deformation position distribution information of the machining track; obtaining the vibration signal frequency, and if the vibration signal frequency matches a preset vibration characteristic frequency spectrum model, calculating an error compensation value for correcting the machining track; adjusting the machining path parameters of the machining equipment by using the error compensation value, generating a machining equipment feeding correction instruction, and outputting a control signal to the numerical control system of the machining equipment.

The invention relates to the field of metal thermoplastic forming and the field of metal heat treatment, and discloses a forge piece quenching deformation correction method based on a finite element and virtual shape correction, which comprises the following steps of: performing quenching deformation simulation on a forge piece by using finite element analysis software to obtain a model after quenching deformation; then, reversible deformation is applied to the forge piece in finite element software, and a mesh model obtained after reversible deformation is fitted into a solid model through reverse software, and then mold opening is conducted; according to the correction method, the forging die capable of counteracting the quenching deformation deviation of the forge piece can be rapidly designed without depending on experience of designers, the die shape is reasonable, and the forge piece shape deviation is low.

This invention relates to the field of composite material manufacturing technology, and discloses a method for forming a composite material main spar for an airfoil, including: S1, mold design: designing a forming mold; S2, 0° sheet design; S3, 45° sheet design; S4, part placement; S5, bag making and vacuuming. This invention solves the problems of wrinkles in the flange strips and non-destructive delamination of the radius angle after forming the main spar in existing methods, enabling the forming of smaller radius angle features, fiber discontinuities, or large angle deviations. This invention uses an inverted male mold forming method for the main spar, utilizing its own gravity to eliminate flange wrinkles while also saving process costs. The sheet design method of this invention solves the problems of fiber discontinuities or large angle deviations, solves the problem of non-destructive delamination in the transition area, and improves placement efficiency. This invention also employs a combination of vacuuming and cold compaction processes, reducing the gap between layers and eliminating the shape deviation problems that may be caused by wrinkles on the vacuum bag surface in the male mold forming method, affecting assembly.

The invention relates to the technical field of home test analysis, in particular to a seat rebound detection method based on comfort. Pressure is applied to the seat and cancelled, the dynamic recovery process of the thickness of each detection point is monitored, the rebound time, deformation quantity and statistical distribution of the detection point are quantified, and a pressure rebound vector is formed to represent the macroscopic elastic response of the material. Secondly, the deformation recovery capability of the complex surface of the key supporting part of the seat after being stressed is evaluated more accurately; a preset load is applied to the back of the seat, the dynamic contour recovery process of the position rebound detection face is tracked through the three-dimensional shape measurement technology, and the position rebound time and shape deviation of the position rebound detection face are obtained. The method focuses on the elastic recovery of the overall shape of the detection surface instead of single thickness change, can effectively evaluate the deformation recovery characteristic of the curved surface structure after the external force is removed, and avoids the interference of the compression of the contact layer on the measurement. And evaluating the comfort of the seat by integrating the two elasticity and deformation test results.

The utility model discloses a duct assembly forming tool for helicopter equipment produced by a method, which comprises a base with an L-shaped cross section, and further comprises a template which is arranged on a side plate of the base and used for bending and fixing a duct into a special-shaped piece, a groove which is consistent with the bent duct in shape is formed in the template, and a plurality of grooves are formed in the groove. The quick-release pipe clamps are arranged on the template and are used for fixing the guide pipe; wherein the quick-release pipe clamp is arranged along the direction of the groove. According to the utility model, the groove which is consistent with the bent guide pipe in shape is formed in the template, so that an accurate shape reference and constraint are provided for the bending forming of the guide pipe. In the bending process of the guide pipe, the guide pipe can be gradually attached along the groove, so that the shape of the finally-formed guide pipe can strictly conform to the specific special shape required by a guide pipe assembly of helicopter equipment, and shape deviation possibly caused by manual bending and other operation is effectively avoided.

The invention relates to a method for shape correction of an assembly (1), in particular a sheet metal assembly, which is formed from at least two planar components (2), in particular formed sheet metal components, each made from at least one flat semi-finished product. In this process, by means of at least one forming step, the overall actual shape (3) of the assembly (1), which exhibits a shape deviation outside specified tolerances from an overall target shape (4), is brought at least into conformity with the target shape (4) such that the actual shape (3) lies within specified tolerances. This is achieved by bringing an effector (5) into point contact with the assembly (1) in each forming step and deforming the assembly (1) by a relative movement of the effector (5) and the assembly (1) such that the shape deviation resulting from the respective forming step is at least minimized.