122 results about "Precision testing" patented technology

The invention provides a humanoid robot motion test platform, which comprises a base, a belt-type motion mechanism, a height adjusting device and a control system, and is characterized in that the height adjusting device comprises a linear driving mechanism of which the bottom is hinged to the base; the first sliding mechanism is connected with the output end of the linear driving mechanism; the second sliding mechanism is in sliding fit with the first sliding mechanism and is connected with the test platform; and the brake mechanism is used for limiting relative movement of the two. During slope changing, the two sliding mechanisms slide relatively to automatically compensate the space horizontal displacement difference, and lateral stress interference is eliminated; the high-frequency large-load stepping impact of the robot can be effectively resisted, the step loss of the system is prevented, and the unification of smooth slope change and high-rigidity and high-precision testing is realized.

The present application relates to the medical robot control and precision testing technical field, especially related to a kind of kinematics parameter closed-loop calibration method and device of surgical robot end effector.The method is first set up reflection unit on surgical robot end effector, and the motion data of driving unit and the light spot position data detected by photoelectric detection unit are collected;Control surgical robot end effector executes rotary scanning movement to carry out coordinate correction to light spot position data;Each independent motion axis of surgical robot end effector is driven respectively, and according to the mapping relationship of corrected light spot position data and motion data, the transmission parameter and hysteresis parameter of each independent motion axis are identified;Drive the motion axis with coupling relationship, identify inter-axis coupling coefficient, and configure kinematics calibration model to control system.The present application effectively eliminates steel wire transmission coupling and system geometric error through step-by-step optical feedback and geometric self-calibration, and improves the operation precision of end effector.

The utility model discloses a kind of test devices, belong to switching power supply technical field, specifically related to a kind of switching power supply high-precision test device, comprising: signal acquisition module, signal conditioning module, AD conversion module and control module;The utility model processes the voltage signal and current signal of acquisition by signal conditioning module, to further guarantee the accuracy of each acquisition signal, and can inhibit the generation of noise and error, while signal conditioning module in the signal of incoming acquisition is handled, measured signal is converted into digitalizable voltage signal, and according to different signal passage gear attenuation amplitude, gain is carried out respectively by program-controlled gain circuit, finally the component of aliasing frequency in the level signal of output is filtered out by anti-aliasing filter circuit, eliminate aliasing in band and prevent dynamic performance reduction;So the utility model can carry out high-precision monitoring according to different signals, to guarantee the stability and accuracy of test device work.

The invention discloses a high-speed heavy-load working condition bearing dynamic stiffness testing device and testing method, and relates to the field of bearing testing. The invention solves the problems that the existing bearing dynamic stiffness test technology and equipment only can load in a single direction, cannot simulate axial and radial composite loading, depends on contact transmission, is insufficient in heavy load bearing, lacks system vibration error suppression measures, and is poor in reliability. And the high-precision test requirement of the independent rolling bearing under the high-speed heavy-load composite working condition is difficult to meet. A shafting supporting module is arranged on the upper portion of a test bench support, a measuring module is located over the shafting supporting module, an axial loading module and a radial loading module apply axial force and radial force to a tested bearing respectively, and a driving module drives a supporting shaft and an inner ring of the tested bearing to rotate. Axial and radial composite loading under the high-speed heavy-load working condition can be achieved, axial and radial displacement can be monitored synchronously, system errors are reduced, and high-precision measurement of the dynamic stiffness of the bearing is achieved.

The invention discloses a scouring sonar precision testing device and method in a sand-rich water flow environment, and belongs to the technical field of pier scouring monitoring, the testing device comprises a water tank body, the water tank body is internally filled with water and accommodates a riverbed sand layer and an underwater distance measurement sonar, and the riverbed sand layer is laid at the bottom of the water tank body; a circulating water flow pipeline is connected between the water tank water inlet and the water tank water outlet; a water pump, a flow regulating valve and a sand adding opening are arranged on the circulating water flow pipeline; an underwater ranging sonar to be tested is mounted at the top of the water tank body through a vertical mounting rod, and the vertical mounting rod drives the underwater ranging sonar to perform height adjustment, so that an acoustic window of the underwater ranging sonar is located at a predetermined water depth position; at least one side tank wall of the water tank body is transparent and is used for observing the flow state in the water tank body and the river bed scouring form, and scale marks are arranged on the transparent tank wall and are used for reading the actual heights of the water surface and the surface of a river bed sand layer. The testing device is simple and compact in structure and can provide calibration basis for engineering application.

The present application relates to the technical fields of experimental fluid mechanics and precision testing instrument, and discloses a kind of fluid resistance precision test system and method in confined space, including thermostatic container component, including coaxial setting inner measuring tube and outer sheath pipe, outer sheath pipe bottom is fixed in positioning hoop.This application uses double-layer coaxial sleeve pipe to match bottom positioning hoop structure, constructs thermostatic cavity with mechanical centering datum as one and coaxial, guarantee the absolute perpendicularity of long-stroke measurement, with the help of dynamic pressure suspension guiding unit and double-line parallel traction mechanism, realize center guiding wire and traction component physical isolation, eliminate cable winding and friction noise, simultaneously through top detachable positioning support and the spiral quick-release hook cooperation of dynamic pressure suspension guiding unit, without cutting heavy binding traction line, can quickly replace test sphere under the premise of reserving system centering datum, so as to greatly improve the efficiency of multi-working condition comparison experiment.

This invention discloses a precision testing device for planetary roller screw pairs, including a testing platform with symmetrically mounted fixed plates on its top. A servo motor is fixedly mounted on one side of one of the fixed plates. The device also includes two sets of support rods symmetrically mounted below the two fixed plates, and a positioning assembly positioned between the two fixed plates. The positioning assembly includes two movable frames and limiting components symmetrically positioned on both sides of the two movable frames. This allows for easy switching between different sized positioning plates when dealing with different types of planetary roller screw pairs, facilitating reliable positioning of the nut or screw according to the type of planetary roller screw pair. Furthermore, after switching, when positioning a reverse planetary roller screw pair, multi-point positioning of the screw in the pair can be quickly achieved, facilitating the movement of the screw in the reverse planetary roller screw pair while preventing rotation during screw movement, thus improving testing accuracy.

This invention discloses a sample loading fixture for stress testing, relating to the field of stress testing technology. The invention includes a base plate with several support components mounted on its bottom surface. A slide rail mechanism is fixed to the top of the base plate, and a support assembly and a testing assembly are connected to the top of the slide rail mechanism. The support assembly and the testing assembly are interconnected. A positioning seat is mounted at one end of the top surface of the base plate. A positioning component is provided on one side of the support assembly, and a pressure plate mechanism is provided on the other side. An adjustment mechanism is provided between the testing assembly and the base plate. A position counting component is provided on one side of the slide rail mechanism. This invention, through a stepped planning of the distance the support assembly is pulled, and by comparing the tensile force display of the force gauge and the tensile stress reading of the stress sensor, forms multiple regular test control groups. Coupled with a high-precision testing environment, this enables comprehensive measurement of tensile stress data and completes a comprehensive and accurate recording of the tensile strength of the substrate glass.

This invention relates to the technical field of graphitization heating devices for lithium-ion battery anode materials. It includes a base, a heating chamber, a furnace, and a heating furnace. The heating chamber is located on top of the base, and the furnace and heating furnace are located above it for graphitization operations. The heating furnace includes a first, second, and third heating furnace: the first heating furnace is in zone A of the furnace, simulating small-batch production in a box furnace to ensure high-precision testing; the second heating furnace is in zone B, simulating batch production in a crucible furnace to achieve high-consumption testing; and the third heating furnace is in zone C, simulating multi-variable comparative production to help find the optimal formula. The furnace and heating chamber contain heating elements and insulation layers to provide a high-temperature environment. A ventilation system is installed around the furnace for rapid cooling and timely product removal. This device can perform zoned heating, improving energy utilization, meeting various heating needs, and effectively solving the current problem of low graphitization yield.

The invention belongs to the technical field of precision test of numerical control machine tools, and discloses a split inertia measurement device and method for linear axis error detection of a machine tool. The split inertial measurement device is mainly composed of a bottom substrate, an orthogonal three-axis zero-point positioner, a single-axis inertial sensor and an integrated data acquisition module. The single-axis inertial sensors are sequentially assembled to X-direction, Y-direction and Z-direction datum planes, static calibration and standard movement track measurement are combined, multiple sets of inertial data are obtained, coordinate registration and pose calculation are achieved through data fusion, and therefore the positioning error, the straightness error and the angle deviation of the linear axis of the machine tool are obtained. The split inertial measurement device adopts a split structure and sensor multiplexing design, avoids complex optical alignment and multi-sensor configuration, and is compact in structure and convenient to mount; in cooperation with wireless data acquisition and magnetic attraction fixing modes, six-dimensional geometric error detection can be efficiently completed on a machine tool site, hardware investment is reduced, and measurement applicability and popularization value are improved.

The invention relates to the technical field of rock-soil testing, and discloses a rock-soil medium stress and pore water pressure high-precision testing device in a vibration freeze-thaw coupling environment, the rock-soil medium stress and pore water pressure high-precision testing device comprises a testing box, openings are formed in the left side and the right side of the testing box, and a rectangular opening is formed in the position, close to the front side, of the bottom of the testing box; according to the invention, through mutual cooperation of the component placing plate, the second spring, the third spring, the clamping block, the telescopic pipe, the crank, the cam, the connecting pipe, the vertical pipe, the first motor, the bottom block and other components, controllable vibration loads with different frequencies and amplitudes can be provided, and seismic waves or traffic loads can be simulated; through mutual cooperation of a vertical plate, a sleeve, a rotating block, a rotating rod, a rear motor, a fixed rod, a first spring, an L-shaped rotating plate, a movable rod, a movable block and the like, the compression refrigerating unit can be driven to move in multiple directions, and temperature control is more uniform.

The utility model relates to the technical field of speed reducer detection, in particular to precision detection equipment for a planetary speed reducer. Comprising a base, a planetary reducer, a connecting rod, a locking frame, a supporting plate, a pressing mechanism and the like. A planetary reducer is arranged on the right portion of the upper side of the base, a locking frame is arranged on the right portion of the upper side of the base and fixedly connected with the input end of the planetary reducer, supporting plates are arranged on the front side and the rear side of the left portion of the base, pressing mechanisms are arranged on the supporting plates, a connecting rod is rotationally arranged in the middle of the base, and a rotating rod is arranged at the left end of the connecting rod and used for pressing the rotating rod. And dial indicators are arranged on the two supporting plates. According to the utility model, through the design of the pressing mechanism, the rotating rod and the dial indicator, the reading of the dial indicator is combined with the length of the rotating rod to calculate the angle error, the precision of the planetary reducer can be accurately measured, the structure is simple, the operation is convenient, the planetary reducer can be automatically tested after being installed, and the test cost is reduced.

This invention discloses a double-mast skid precision testing device, belonging to the technical field of testing devices. It includes a base frame with main tracks symmetrically arranged on both sides for skid entry and exit. A side track for guiding the skid entry and exit is located adjacent to the outer side of the main tracks. The base frame also includes X-axis and Y-axis fixing parts for fixing the skid, X-axis and Y-axis positioning parts for positioning the skid, and a flatness testing part for detecting the flatness of the skid. Main columns are located on both sides of the base frame, with crossbars on the main columns and mast testing parts on the crossbars for detecting mast precision. This invention can simultaneously detect the consistency, levelness, and mast position accuracy of the skid base, reducing the rate of downtime and failure during online operation, facilitating fixture replacement by operators, improving robot painting quality, and ensuring smoother operation.

The embodiment of the invention provides a precision detection method and system for a sealing element, and belongs to the technical field of precision detection, and the method comprises the steps: obtaining the angle data of a mobile detection head; the obtained placing rod is determined as a rotating node; calculating an initial connection weight corresponding to the rotating node; calculating according to the angle data to obtain a first matching parameter; calculating a distance parameter between the sample input vector and the output layer node through the initial connection weight; determining a neighborhood range of the output layer according to the distance parameter; outputting clustering result data of the rotating node by taking the first matching parameter as an adjustment amount; and the first motor controller and the second motor controller are used for controlling the placing rod and the movable detection head to detect the sealing element. The movable detection head rotates around the fixed clamp, so that the surface appearance defect of the sealing element is detected, the detection efficiency is greatly improved, the problem that the sealing element made of an elastomer material is easy to deform is solved, and the detection efficiency of the sealing element is improved.

The application discloses a precision test method, device and equipment of a depth camera and a medium, relates to the technical field of camera testing, and comprises the following steps: collecting a set of image pairs captured by the depth camera during movement of a calibration board at a plurality of different positions in the imaging range of the depth camera; for each image pair, determining a first central two-dimensional coordinate of the identification point in the color image pixel coordinate system and a FOV reference range of the identification point in the color image; taking the depth of the first central two-dimensional coordinate of the identification point in the depth map as an observed value of the distance of the identification point; calculating the coordinates of the identification point in the camera coordinate system based on the extrinsic matrix of the depth camera in the calibration board coordinate system, i.e. the true value of the distance of the identification point; and determining the precision test results under different measurement distances and different FOV reference ranges according to the observed value and the true value of the distance of the identification point obtained from each image pair. The application can improve the test efficiency while reducing the test cost.

The invention relates to the technical field of precision detection, in particular to a precision detection device and a dynamic error compensation method.The device comprises a conveying mechanism, a turnover clamping mechanism, a jacking mechanism, a detection mechanism and a manipulator, and the conveying mechanism is used for conveying a to-be-detected product and a detected product; the overturning clamping mechanism clamps the product after the manipulator places the product to be detected on the jacking mechanism and drives the product to overturn around the central axis of the product in the detection process, so that the detection of the front and back surfaces is realized; the jacking mechanism is located below the overturning and clamping mechanism and used for providing bottom supporting when the product is clamped and descending to give way during overturning so as to keep the posture stable. The detection mechanism is located above the turnover clamping mechanism and can move in a reciprocating mode and conduct non-contact detection above the product; the manipulator is responsible for taking, placing and sorting, so that double-sided automatic detection of the to-be-detected product in the same station is realized, and the detection precision, the detection efficiency and the consistency of front and back detection results are remarkably improved.

The invention discloses a degree-of-freedom calibration method and a degree-of-freedom calibration system for multiple groups of line-structured optical probes, and belongs to the field of precision testing technologies and instruments. The method comprises the following steps: constructing a digital three-dimensional model of a calibration element, wherein the surface of the calibration element comprises at least three different types of preset geometric features; scanning the calibration element under different poses through at least two groups of to-be-calibrated line structure optical probes to obtain an actual measurement point cloud; and based on the digital three-dimensional model and the actually measured point cloud, iteratively adjusting the degree-of-freedom parameters of each group of line-structured optical probes through an optimization algorithm until the deviation between the geometric features extracted from the actually measured point cloud and the corresponding preset geometric features in the digital three-dimensional model meets a preset condition, therefore, the optimal degree-of-freedom parameter of each group of line-structured light measuring heads and the relative pose relationship between the measuring heads are determined. The method has the advantages of high calibration efficiency and high accuracy, and does not need to calibrate the internal reference of the measuring head, thereby greatly improving the practicability of the method.

This invention discloses a clearance testing machine and method for automotive wheel hub units, belonging to the field of precision testing and automated control technology for automotive parts. The method includes: setting up a probe assembly comprising a primary main drive and a secondary vibration unit, and a multi-point hydraulic adaptive floating support platform below it; placing the automotive wheel hub unit on the platform, utilizing Pascal's principle to connect the hydraulic column, and automatically finding equipotential surfaces through fluid flow to eliminate tilting errors caused by microscopic unevenness; driving the probe to feed and generate axial shear vibration, utilizing thixotropy to destroy the grease network structure and liquefy it, thereby eliminating the virtual stiffness of the oil film; real-time monitoring and feedback, maintaining a static micro-load, and when the system determines a sudden change in stiffness from viscosity to elasticity, locking the position reading and calculating the axial clearance. This invention effectively avoids measurement data distortion caused by workpiece machining tolerances or clamping tilt, significantly improving the physical reference accuracy of clearance testing.

The application discloses a 110G high-isolation high-flatness GSSG probe and belongs to the technical field of microwave testing. It aims to solve the problems of traditional probes, such as large crosstalk, low calibration frequency, serious damage to pads and the influence of gold stacking on test stability. The probe comprises two parallel half-steel cables, a micro-plate assembly and a probe assembly. The half-steel cable is provided with an arc cut surface and a positioning step at one end. The micro-plate assembly is assembled at the arc cut surface and is provided with pads and low-coupling microstrip lines arranged in a specific manner. The probe assembly adopts a high-flatness needle tip arranged vertically and contacts the pads in a vertical puncture mode. Through structural synergistic optimization, the application realizes high-precision testing of the 110G frequency band, the crosstalk is less than or equal to -40 dB, the flatness deviation of the needle tip is less than or equal to ±1 microns, the needle mark is small and there is no gold stacking problem, and the application is suitable for high-frequency performance detection of 50G-110G frequency band devices such as PCBs and chips, thereby guaranteeing the reliability of the subsequent bonding process of the to-be-tested object.

This invention relates to a bearing clamping device and its usage method, belonging to the field of bearing assembly and measurement. The purpose of this invention is to solve the problems of limited versatility in bearing clamping during inspection, and the eccentricity of the inner and outer rings during clamping, which fails to meet the requirements of precision testing. The bearing clamping device includes a chassis support module, a gear drive module, and a symmetrical jaw module. The symmetrical jaw module is mounted on the chassis support module and is used to clamp the bearing. The gear drive module is mounted on the symmetrical jaw module and drives the symmetrical jaw module to clamp and disassemble the bearing. The symmetrical jaw module is used to center the inner and outer rings of the bearing, ensuring their concentricity.

This invention discloses a method and system for detecting defects in precision-diameter seamless steel pipes based on laser scanning, belonging to the field of non-destructive testing technology. The method includes: acquiring raw laser scanning data of the inner wall of the steel pipe containing distance, angle, and displacement information; constructing regular grid data through data conversion and spatial mapping; obtaining a reference cylindrical model through cylindrical fitting; performing coaxial error compensation and calculating radial residuals; expanding and correcting the residuals to generate an inner wall residual map; performing multi-scale decomposition on the inner wall residual map to obtain high- and low-frequency components; combining the two to complete defect identification and output the results. This invention solves the technical problems of coaxial error interference, difficulty in distinguishing defects from geometric deviations, and low accuracy in identifying minute defects in the inner wall defect detection of precision-diameter seamless steel pipes. It achieves accurate compensation for coaxial errors in the detection system, effectively separating the macroscopic geometric features and local defect features of the inner wall of the steel pipe, thereby meeting the technical requirements for quantitative and accurate judgment in precision testing.

This invention discloses an anti-drift eddy current sensor for microscale measurement, belonging to the field of high-precision measuring instrument technology. The instrument includes a glass substrate, which is divided into symmetrical elastic clamping arms and a fixed clamping base by an arc-shaped dividing groove. Each of the two has a clamping part of equal radius arc, forming a three-point positioning clamping station. An arc-shaped hinge end is provided at the end of the dividing groove, and parameters such as the substrate thickness, clamping angle, and the size and position of the hinge end are precisely quantified and defined. This invention eliminates electromagnetic interference and ensures structural deformation resistance using a glass substrate. It achieves precise cooperation with the sensor through three-point positioning. By optimizing structural parameters to balance substrate stiffness and fracture risk, the sensor is subjected to uniform force and accurate concentric positioning. At the same time, the instrument has no additional driving / locking components, avoiding error accumulation. It is easy to operate, highly stable, and suitable for industrial applications of precision testing.

This utility model relates to the field of pressure sensor testing technology, and discloses a precision testing device for pressure sensor processing. It includes a testing platform, a mounting base fixedly connected to the top of the testing platform, a standard pressure sensor fixedly mounted on the top of the mounting base, a display screen on the top of the testing platform, a rotating assembly on the right side of the mounting base, multiple sets of fixed components on the surface of the rotating assembly, a testing assembly on the top of the testing platform, and support columns fixedly connected to the four corners of the bottom of the testing platform. This utility model uses a motor to drive a driving gear to rotate. Because the driving gear and driven gear mesh with each other, the driven gear rotates, causing the hollow column to rotate, thus rotating the pressure sensor to be tested on another fixed assembly to the bottom of the testing assembly. This enables continuous testing, reduces the waiting time for disassembling and assembling the pressure sensor, and improves testing efficiency.

This utility model discloses a precision testing stage for instrument processing, comprising: a testing body, a connecting assembly, and a protective assembly; the connecting assembly includes connecting pipes, multiple connecting pipes are disposed at the output end of the testing body, a movable cavity block is disposed at the top of the connecting pipe, and a fixing part is disposed on the inner wall of the movable cavity block; the protective assembly includes a sealing block, the bottom of the sealing block is inserted into the middle of the movable cavity block, and a rotating part is disposed at the top of the sealing block; a reset part is disposed in the inner cavity of the connecting pipe and the movable cavity block; this utility model, by disposing of a movable cavity block at the top of the connecting pipe in the connecting assembly at the top of the testing body, and using the fixing part to fix the instrument to be tested, wherein the sealing block in the protective assembly, under the support of the reset part, isolates and protects the inner cavity of the movable cavity block, preventing foreign objects from entering the interior of the movable cavity block, hindering the fixed connection between the pressure instrument and the movable cavity block, and affecting the testing of the pressure instrument.

The application relates to the technical field of agricultural machinery vibration test, in particular to a seeding machine seed dispenser precision detection test device, which comprises a base, a conveying belt driven by an independent power source is arranged on the bottom outer wall of the base, a control unit is arranged on the outer wall of the base, and a vibration mechanism and an auxiliary mechanism are arranged on the base. The auxiliary mechanism is arranged, the speed of an adjusting motor is changed, the size of wind power can be regulated, the fan and the vibration mechanism can be independently switched, the variable options are increased, the reliability of the device result is further improved, in addition, the steering motor drives the rotation of the steering frame, the wind direction can be adjusted, meanwhile, the steering frame drives the rotation of the linkage sleeve through the mounting frame, the linkage sleeve drives the rotation of the irregular ratchet wheel around the mounting shaft, the horizontal vibration direction of the vibration mechanism is adjusted, the complexity of field operation is further simulated, and the reliability of the detection result is improved.

The invention discloses a high-precision rudder deflection precision testing device and method for a high-integration steering engine, and relates to the technical field of rudder deflection precision test.According to the device, the parallelism of an inertia block and a datum plane A on a transmission shaft meets the requirement, pins are driven, and the inertia block and the transmission shaft are fastened together through standard screws; the inertia block and the transmission shaft are positioned and do not move, a phi 8 pin hole is drilled, a connecting pin is manufactured, the transmission shaft and the reducing sleeve are connected through the connecting pin, a flat washer and a spring washer are arranged on the connecting pin in a sleeving mode and then are fastened through nuts, a clamp for fastening an electronic angle gauge is designed in the tool, and the clamp is fastened on the inertia block through a standard part screw. And meanwhile, a special screw for butting and fastening the rudder deflection indicating tool and the high-integration steering engine is also designed. The problems of large test occupation of human resources, low test precision, large test result error, low test efficiency and proneness to errors in copying existing in pointer type rudder deflection precision test are solved.

The utility model discloses a sensor impact force testing device, which comprises an equipment base provided with a multi-station replaceable efficient testing structure. The multi-station replacement type efficient testing structure comprises a mounting groove, a pair of driving motors, a pair of adjusting screw rods, two pairs of moving blocks, a pair of sliding rails, two pairs of sliding blocks, a mounting table, three rapid clamping assemblies, a mounting frame and a tester. The utility model relates to the technical field of sensor impact force testing devices, and has the beneficial effects of solving the problems that the conventional sensor impact force testing device generally adopts a single-station testing mode, the testing efficiency is low, the requirements of the modern semiconductor industry on high-efficiency and high-precision testing are difficult to meet, the clamping structure is tedious to operate, the cost is high, and the like. The problems that frequent manual clamping is needed, the function of rapidly replacing stations is lacked, the test period is prolonged, and the production efficiency is affected are solved.

The invention belongs to the technical field of vibration precision test, and discloses a data acquisition and processing method for satellite micro-vibration ground test. Comprising five core steps of original vibration signal acquisition, adaptive oversampling, analog-digital hybrid filtering, dynamic extraction recovery and micro-vibration transfer characteristic extraction. Through an analog-to-digital hybrid filtering architecture and in combination with an intelligent oversampling-extraction noise reduction technology, micro-vibration signal measurement with a high signal-to-noise ratio is realized. The method has the main technical advantages that various test items can be completed by using a single-specification sensor; a dynamic parameter adjustment mechanism can automatically optimize a processing strategy according to signal characteristics, and the test adaptability is remarkably improved.