397 results about "Coordinate-measuring machine" patented technology

The present invention relates to a contour accuracy compensation method and system for a precision hot-press forming mold. The method comprises: delineating grids on a three-dimensional model of a hot-press forming mold to obtain mold surface grid data; performing curvature analysis to obtain a high-curvature region and a low-curvature region; performing high-density sampling on the high-curvature region, and performing low-density sampling on the low-curvature region, so as to obtain a sampling point set; using a coordinate measuring machine to perform three-dimensional coordinate measurement on the sampling point set to obtain surface contour data; performing comparative analysis on the surface contour data and a theoretical model to obtain a contour error distribution; on the basis of the contour error distribution, using an inverse distance weighted interpolation algorithm to perform interpolation operation on an entire mold surface to obtain a mold surface compensation amount distribution; and on the basis of the mold surface compensation amount distribution, correcting the three-dimensional model of the hot-press forming mold to generate a compensated mold processing model. The implementation of the present invention realizes intelligent and automated contour accuracy compensation.

The invention discloses a multi-modal measurement system and method of a three-coordinate measuring machine, relates to the cross technical field of precision measurement, computer vision and intelligent manufacturing, and is used for solving the problems of low automation degree, strong subjective dependence and lack of assembly performance prediction capability in automobile covering part characteristic line detection. According to the method, point cloud data and positioning coordinates are synchronously collected through a multi-mode sensor, and a fusion point cloud sequence is generated through time sequence synchronization; constructing a high-precision three-dimensional point cloud model through noise filtering, registration and curved surface reconstruction; automatically extracting a feature line path based on curvature analysis and generating an analysis section; calculating a sharpness index through contour fitting, and generating a quality evaluation coefficient in combination with a CAD ideal model contour tolerance deviation; and finally, defects are identified through virtual assembly analysis, a sensor remeasurement path instruction is generated, and a quality report is output in combination with a quality coefficient, so that the detection precision, the efficiency and the assembly quality prediction capability in the measurement process of the three-coordinate measuring machine are improved.

The invention discloses intelligent detection equipment for internal defects of a titanium alloy cartridge receiver, and relates to the technical field of nondestructive testing, the intelligent detection equipment comprises a supporting base, a self-adaptive electromagnetic active vibration isolation assembly and a magnetic suspension pneumatic fine adjustment assembly, and by means of the synergistic effect of two core assemblies, namely the self-adaptive electromagnetic active vibration isolation assembly and the magnetic suspension pneumatic fine adjustment assembly, the internal defects of the titanium alloy cartridge receiver are detected. Ultra-stable vibration isolation and nanoscale precise positioning of the industrial CT three-coordinate measuring machine in the precise scanning process are achieved, and different from a traditional lag and friction scheme depending on passive air floating vibration isolation and mechanical transmission positioning, high-precision scanning operation is more stable and more precise, and the precision of the industrial CT three-coordinate measuring machine is improved. Firstly, a magnetic suspension friction-free support of the magnetic suspension pneumatic fine adjustment assembly is matched with a pneumatic nozzle matrix in a zero-contact and zero-abrasion mode, the bottleneck that a traditional lead screw guide rail mechanism is large in positioning error due to friction stick-slip and idle stroke is broken through, stable support is achieved through non-contact suspension, and accurate micro-power output is achieved through pneumatic counter-acting force; and the full-scale range from macroscopic positioning to nanoscale fine adjustment is ensured.

The invention discloses a three-coordinate measuring machine, which comprises a first guide rail; the second guide rail is parallel to the first guide rail; the two ends of the cross beam are movably connected with the two guide rails through a first connecting assembly and a second connecting assembly, and at least part of the cross beam is located in the space between the first guide rail and the second guide rail; the driving unit comprises a first driving mechanism and a second driving mechanism which are assembled to the first connecting assembly and the second connecting assembly correspondingly and used for driving the cross beam to move synchronously along the first guide rail and the second guide rail. The sliding frame is movably connected to the cross beam; the Z-axis assembly is assembled on the sliding frame; the gravity centers of the cross beam, the sliding frame and the Z-axis assembly are coplanar with the top faces of the two guide rails. The invention provides a three-coordinate measuring machine, which ensures the operation stability of a cross beam.

The invention relates to a high-precision three-coordinate measuring machine measuring head error calibration and compensation method and device, and belongs to the technical field of precision measurement. The method comprises the following steps: deploying a multi-source sensor integration module, and establishing a multi-dimensional error model; driving the measuring head to scan according to a preset path, acquiring detection data of the multi-source sensor integration module and scanning data of the measuring head, inputting the detection data and the scanning data into the multi-dimensional error model, and generating an error preset value; and performing deviation compensation according to the error preset value, and executing scanning measurement after deviation compensation. Through the mode, the measurement time can be remarkably shortened, error accumulation is reduced, and the detection efficiency is improved.

The invention provides a three-coordinate measuring machine metering detection method and system, and relates to the field of three-coordinate measurement, and the method comprises the steps: obtaining the geometric model data of a to-be-measured workpiece, and analyzing the geometric model data to determine the local geometric features of the workpiece; according to the method, path information and measuring head attitude information used for measurement are generated according to local geometric features, and based on the path information and the measuring head attitude information, the contact condition of a measuring needle and the surface of the workpiece is simulated, so that the purity and reliability of a data source are remarkably improved, and the measurement data of which abnormal trigger signals are removed are accurately measured. Fine processing is carried out according to local geometric features to eliminate deviation in measurement data, geometric information of key geometric details of the workpiece is maintained, it is ensured that geometric information of key features such as tiny chamfers and sharp edges is not damaged, the accuracy, reliability and efficiency of the three-coordinate measuring machine in measurement and detection of the complex curved surface workpiece are improved, and the measurement precision is improved. The problem that the existing data acquisition efficiency is not high is effectively solved.

The present application relates to the field of measurement technology, and in particular to a rapid measurement system for aviation blades based on a four-line structured light sensor, wherein the measurement system comprises: four line structured light sensors and a calculation processing module mounted on a three-dimensional coordinate measuring machine; determining the equation of the laser plane in the camera coordinate system based on a target; solving the three-dimensional coordinates of the target point on the intersection of the laser plane and the blade in the camera coordinate system based on the equation; establishing a transformation relationship between the camera coordinate system and the machine coordinate system of the three-dimensional coordinate measuring machine, converting the target point to the machine coordinate system, and realizing three-dimensional scanning measurement; obtaining the point cloud data of the standard sphere in the sensor external parameter calibration module, fitting and outputting a point cloud sphere; using the center of the point cloud sphere as the measurement reference, combining the measurement data of multiple line structured light sensors to obtain the measurement result. Through the present application, only one-dimensional movement along the Z axis of the three-dimensional coordinate measuring machine is required to complete the measurement, thereby improving the measurement efficiency.

The invention discloses a smooth surface ring gauge automatic calibration device and method.The device comprises a clamping and positioning unit, a visual identification unit, a measuring unit and a computer control system, and the measuring unit comprises a metering type coordinate measuring machine, an automatic calibration module and a temperature acquisition unit; the visual identification unit comprises a line laser visual sensor and an image processing module, the computer control system is used for realizing data transmission and cooperation among the modules or units, and the line laser visual sensor adopts a laser triangulation method to scan the 3D contour of the smooth surface ring gauge to obtain point cloud data; the image processing module identifies and analyzes the point cloud data to obtain geometric feature information of the smooth surface ring gauge, the automatic calibration module adjusts a measurement scheme in real time according to the geometric feature information, and the metering type coordinate measuring machine measures all parameters of the smooth surface ring gauge according to the adjusted measurement scheme. According to the invention, full-parameter, high-efficiency, high-precision and integrated automatic calibration of the smooth surface ring gauge can be realized.

Disclosed in the present invention is an error self-calibration method based on a feature component for a parallel coordinate measuring machine. The method comprises: constructing a geometric error model of a parallel mechanism; measuring a feature component by means of a coordinate measuring machine, and then mounting the feature component within the workspace of a parallel coordinate measuring machine; performing data collection on the basis of a sphere‑center‑distance constraint and a sphere‑radius constraint, and correspondingly constructing an error equation based on the sphere‑center‑distance constraint and an error equation based on the sphere‑radius constraint; combining the error equations to obtain an error calibration model based on various feature constraints, using an LM method to identify, correct and substitute kinematic error parameters of the error calibration model, and repeating this process iteratively until kinematic error parameters no longer change, so as to obtain corresponding geometric error parameters of the parallel coordinate measuring machine; and on the basis of the geometric error parameters, compensating for an end pose error in the coordinate measuring machine caused by a geometric error. The present invention greatly improves the motion precision of a parallel coordinate measuring machine.

An articulated coordinate measuring machine comprising a set of sensors, a probe for approaching an object point, and a set of members connecting the probe to a base. The probe is configured to be moved at least partially manually by an operator holding and guiding the probe and / or a handheld member of the set of members. The coordinate measuring machine comprises (i) an accuracy-assessment-functionality providing accuracy-perception-data based on continuously monitored actual data representing an actual state of said at least one state variable of the coordinate measuring machine during the guiding of the probe, and (ii) a user-support-functionality providing a support action during the guiding of the probe based on the accuracy-perception-data.

The invention provides a three-coordinate measuring machine adaptive dynamic error compensation method, and relates to the field of three-coordinate measuring machines, and the method comprises the steps: obtaining multi-source state data of a three-coordinate measuring machine, and calculating a real-time dynamic error, the state data comprising a motion state, a dynamic response and environment disturbance data; based on the real-time dynamic error, using a recurrent neural network to construct a virtual measuring machine model, and performing offline training to obtain an initial error prediction model; and acquiring real-time error feedback data, and performing fine adjustment on the initial error prediction model by using an incremental learning algorithm and a sliding time window mechanism to obtain a prediction model capable of dynamically evolving and aging adaptive parameters. The method is used for overcoming the defect that in the prior art, a linear model or a fixed compensation parameter is difficult to accurately describe and compensate all dynamic errors sometimes.

The invention discloses an articulated coordinate measuring machine error prediction compensation method and system based on a digital twin model. The method comprises the following steps: constructing a real-time synchronous articulated arm digital twinborn model; probability modeling is carried out on a plurality of error sources of the articulated coordinate measuring machine through a Monte Carlo method, and then error statistical characteristics are obtained. And inputting the error statistical characteristics, the joint angle during measurement of the real joint type coordinate measuring machine and the environmental parameters into an error compensation network. And the error compensation network outputs the end position compensation amount of the current coordinate measurement result. According to the method, the digital twinborn model of the articulated coordinate measuring machine is constructed, measurement point distribution is simulated, high-frequency online real-time compensation is realized in cooperation with an error compensation network, the whole process of'measurement-simulation-prediction-compensation 'can be completed through a unified system, and the real-time performance of error compensation is remarkably improved.

The utility model relates to the field of three-coordinate measuring machines, and provides a base for a three-coordinate measuring machine, which comprises the three-coordinate measuring machine, a plurality of bases are fixedly arranged at the bottom of the three-coordinate measuring machine, the bases are fixedly arranged at the bottom of the three-coordinate measuring machine in a bolt connection mode, moving wheels are fixedly arranged on the outer sides of the bases, and each base comprises a fixed plate. The bottom of the three-coordinate measuring machine is provided with a plurality of bases, the upper portion of each base is provided with a rubber pad and a spring, the upper portion of each base is provided with a fixing plate, the middle portion of each fixing plate is provided with a movable column through a first nut, the lower portion of the circumference of each movable column is provided with a rubber pad and a spring, the bottom of each movable column is fixedly provided with a base plate, and the lower portion of each base plate is provided with a supporting seat. And in cooperation with the damping effect of the rubber pad, energy absorption and shock absorption can be achieved when the three-coordinate measuring machine works, and a good working environment is provided for working of the three-coordinate measuring machine.

The invention relates to the technical field of measurement path planning, and provides a three-coordinate measuring machine measurement path optimization method based on digital twinning and related equipment. The method comprises the following steps: establishing a digital twinborn model of a measured part and a three-coordinate measuring machine; in the digital twinborn model, classifying measurement areas according to the measurement precision of the measured part to obtain a plurality of area types; obtaining an initial measurement viewpoint set, and screening from the initial measurement viewpoint set according to the region type to obtain an effective measurement viewpoint set; based on the effective measurement viewpoint set, solving an initial measurement path of the three-coordinate measuring machine by using an ant colony algorithm and taking a path distance, a measurement precision standard-reaching rate and motion energy consumption as optimization targets; and optimizing the initial measurement path according to the actual motion parameters of the measuring head of the three-coordinate measuring machine to obtain an optimized measurement path. According to the method, the viewpoint screening period can be shortened, the viewpoint screening efficiency is improved, the path planning efficiency is further improved, and the real-time measurement requirement is met.

Method of operating a measurement system comprising a coordinate measuring machine (200), a configurable tool rack (100) that can accept a plurality of stations (105,106), each station capable of holding a tool (95). In the method, the system measures a workpiece according to a measuring plan that includes tool change operations and measures of the workpiece with different tools available in the rack. The tool change operations are changed automatically based on a set of operational parameters acquired by electronic devices and sensor installed on the tool rack or on the tool stations or on the tools in the rack, or any combination thereof.

The invention discloses an automatic production line and a production process for cylinder base parts, and belongs to the technical field of automatic production lines for cylinder base parts. The automatic production line comprises a ground rail assembly, three-axis vertical machining centers arranged on the two sides of the ground rail assembly, a five-axis linkage machining center, abrasive particle flow equipment, high-pressure water jet equipment, an automatic cleaning machine, a five-axis coordinate measuring machine, a general control machine and a six-joint robot installed on the ground rail assembly. The three-axis vertical machining center is used for rough machining of products. The five-axis linkage machining center is used for finish machining of products. The abrasive particle flow equipment and the high-pressure water jet equipment are used for carrying out surface deburring treatment on the product; the automatic cleaning machine is used for cleaning the products; the five-axis coordinate measuring machine is used for online measurement of products; the six-joint robot is used for transferring products on the whole production line; the master control machine is used for production line automation overall control. Automatic production of the cylinder base parts is achieved, and the machining efficiency and the machining precision are improved.

The invention discloses an involute helical gear forming grinding force prediction method, which comprises the following steps: firstly, based on a helical gear forming grinding space motion relationship, establishing a helical tooth surface model comprising an involute surface and a tooth root transition curved surface, and constructing a geometric contact model of a grinding wheel and a gear; then, tooth surface deformation data obtained after heat treatment are obtained through a three-coordinate measuring machine, coordinate mapping is carried out, and the grinding depth and contact parameters are corrected; on the basis, a grinding force integral model considering the heat treatment influence is established by combining a plane grinding mechanism, and integral calculation is carried out on tangential and normal grinding force of a tooth surface involute section, a transition arc section and a tooth bottom section; finally, actual measurement data are obtained through a grinding experiment, and model parameter calibration is completed. According to the method, dynamic and accurate prediction of tangential and normal grinding force in the bevel gear forming and grinding process can be achieved, and a reliable basis is provided for mechanical behavior analysis and process optimization in the gear machining process.

The invention relates to an optical measuring arrangement (100) for detecting a distance between a first component and a second component by measuring the length of at least one measuring path (101), wherein the measuring path (101) is spanned between at least two facets (102, 103) forming a measuring head, which are directly or indirectly connected or connectable to the first component, and a measuring target (104) arranged in the measuring path (101), which is directly or indirectly connected or connectable to the second component and is configured to deflect a measuring beam (105) back and forth in the measuring path (101) between the facets, wherein the second facet (103) is formed as a reflecting facet (103). The center of curvature of one of the facets (102, 103) of the measuring head is located on the measuring target (104) or at most 20% of the distance between the facet (102, 103) and the measuring target (104). The invention further relates to a projection exposure system, a lithography system, an inspection system and a coordinate measuring machine.

The invention discloses an aircraft surface waviness measurement and analysis method and system, and the method comprises the steps: scanning the surface of an aircraft according to a planned path through employing a three-coordinate measuring machine and a scanning probe, obtaining scanning data, and obtaining the scanning data for evaluation through employing a segmented scanning and segment-to-segment direct splicing mode for a hole, a pin and other structural parts; fitting based on scanning data to obtain a point deviation data set, calculating corresponding point arc length data based on the point deviation data and the point coordinate data on this basis, and drawing a graph by taking a horizontal axis as the point arc length data and a longitudinal axis as the point deviation data; and determining the surface waviness of the airplane by combining the derivative at the intersection point of the point deviation data curve and the transverse axis and the distance between the wave crest and the wave trough, thereby realizing the efficient and accurate measurement of cavities, welding seams and other obstacle structures on the outer surface of a large-scale airplane part or the whole machine and the accurate calculation of the waviness.

The invention relates to the technical field of three-coordinate measuring machines, and discloses a multi-sensor cooperative three-coordinate measuring machine for a pump body, the multi-sensor cooperative three-coordinate measuring machine comprises a measuring table and a pump body main body, a first moving frame is arranged on the measuring table, a second moving frame is arranged on the first moving frame, and a measuring head is arranged on the second moving frame; the clamping unit comprises a bottom plate installed on the measuring table, connecting plates are arranged on the two sides of the bottom plate, supports are installed on the sides, close to each other, of the connecting plates, and alternate clamping mechanisms are arranged at the ends, close to each other, of the supports. According to the invention, the first clamping head and the second clamping head work alternately through the alternate clamping mechanism, and the other group is separated when one group is clamped, so that the clamping part is prevented from shielding a measurement area. And the measuring head can scan all areas of the surface of the pump body, so that a measurement blind area in a traditional fixed clamping mode is effectively eliminated, and acquisition of size data of the whole surface of the pump body is ensured.

The invention discloses a three-coordinate measuring machine automatic programming method based on a CAD model and a system optimization system thereof, and belongs to the technical field of intelligent manufacturing and precision detection. According to the method, an off-line programming technology is utilized, and an automatic, efficient and accurate measurement program generation solution is provided through geometric feature recognition, measurement point distribution and path automatic generation. Different from the prior art, under the condition that manual intervention is not needed, the program code meeting the specific measurement standard is automatically generated according to the CAD model of the workpiece and the user requirement, seamless data interaction with the measuring machine can be achieved, the programming efficiency is remarkably improved, and human errors are reduced. In addition, the system has strong adaptability and high operation convenience, and is suitable for automatic measurement programming of various complex parts. The method is innovative, and an automatic solution which is optimized and has a wider application prospect is provided on the basis of the prior art.

The invention relates to the technical field of coordinate measuring machines, and particularly discloses a coordinate measuring machine data correction method and system based on real-time temperature compensation. According to the method, transient fluctuation in measurement data is eliminated through continuous sampling and screening, data steady-state reliability is ensured, then environment temperature is dynamically optimized through comprehensive analysis of a heat source of equipment and external heat radiation, structural thermal inertia and a real-time heat dissipation coefficient are introduced, comprehensive temperature rise is calculated, preliminary linear compensation is performed, and the reliability of the data steady-state is ensured. Basic errors caused by environmental factors are effectively isolated, when preliminary correction data are still out of tolerance, a fine compensation process is triggered, and thermal deformation under complex working conditions is accurately calculated by obtaining temperature distribution of key components and based on a high-fidelity model fusing thermal stress, assembly constraint, material nonlinearity and space-dynamic response, so that the accuracy of thermal deformation is improved. Finally, nonlinear space compensation is realized, and the problems of poor adaptability and insufficient precision can be solved.

The invention discloses a three-coordinate measuring machine based on special-shaped surface measurement. An upper working surface where a working table is located is used for bearing a to-be-measured piece; the measuring mechanism is arranged on the moving portal frame, the moving portal frame is made to move on the workbench, and a to-be-measured piece is measured through the measuring mechanism. A measuring head of the measuring mechanism is arranged at the front end portion where the first movement assembly is located, meanwhile, a first air bag pushing piece is arranged at the rear end portion where the first movement assembly is located, and the first air bag pushing piece is inflated and deflated to be matched with a measuring head piece at the front end portion to synchronously achieve axial pivoting movement. And the second movement assembly is located above the first movement assembly, so that the pivoting movement of the first movement assembly and the second movement assembly drives the measuring head piece to move in the whole space direction, and the full-angle scanning measurement of the to-be-measured piece by the measuring head piece is formed. The whole device can realize high-precision measurement of small-size measurement pieces, and the measurement efficiency is improved.

The invention relates to an optical measuring arrangement (100) for position and / or distance detection of a component relative to a reference along at least one measuring axis, comprising an optical resonator (101) which has at least one coupling mirror (102) for coupling a measuring beam (103) and an end mirror (104) enclosing a resonator cavity (105). The resonator cavity (105) has a length adjustment range, wherein the measuring beam passes through the resonator cavity (105) more than once. The optical resonator (101) has at least one optical element (108) which is configured to control, at least within the length adjustment range (107) of the resonator cavity (105), the beam radius of the measuring beam (103) at the coupling mirror (102) and / or a Gouy phase of the measuring beam (103) propagating in the resonator cavity (105).The invention further relates to a projection exposure system, a lithography system, an inspection system and a coordinate measuring machine.

The invention relates to a three-coordinate measuring machine global detection trajectory planning method based on an improved ant colony algorithm. The method comprises the following steps: constructing a distance adjacent matrix; initializing related parameters of the improved ant colony algorithm and initial iteration positions of ants; next nodes are selected in sequence based on the state transition probability until the ant traverses all the nodes, and a complete detection path is obtained; updating pheromones among nodes according to the quality of the detection path; calculating node fitness according to the quality of the detection path, and calculating a node selection probability based on the node fitness; selecting an initial node of the next iteration of the ant colony by using a roulette strategy based on the node selection probability; on the basis of the updated pheromone and the initial node of the next iteration of the ant colony, the ant colony iteration search detection path process is carried out again; and selecting the path with the shortest detection path length in the iteration process as a global optimal detection track. According to the invention, the global detection trajectory planning effect of the three-coordinate measuring machine is improved.

The embodiment of the invention relates to the technical field of vehicles, and discloses a body-in-white measurement data processing method and device, electronic equipment and a storage medium. According to the embodiment of the invention, on the basis of the CSV format detection data output by the three-coordinate measuring machine, the CSV format detection data are in one-to-one correspondence with the element numbers for size measurement of the body-in-white, and the established vehicle model template is utilized to realize online systematic management of all the body-in-white and the size and precision measurement data of the corresponding measurement points. Therefore, at least the functions of body-in-white measurement point precision checking, multi-point deviation comparison, qualified rate calculation, trend management, backtracking and the like can be realized, the data form can be expanded, and the data processing efficiency can be improved.

A coordinate measuring machine (measuring apparatus) includes: a probe (measurement performing unit) performing a measurement process on a measurement target; an electrical section disposed in a part of the probe; a temperature sensor provided for the electrical section and outputting a detection signal based on a temperature obtained by measurement; and a controller (measurement calculator) calculating a measurement result of the measurement target, in which the controller calculates the measurement result by compensating a measurement value obtained by the measurement process based on a processed signal obtained by applying a low-pass filter to the detection signal output from the temperature sensor.

The embodiment of the utility model provides a closed carriage system applied to a three-coordinate measuring machine, comprising: an X-axis guide seat comprising an X-axis guide cavity enclosed by a main support plate, an outer vertical plate, an upper plate and a lower plate, and a plurality of air bearings provided with air floating end surfaces and arranged at the periphery of the X-axis guide cavity; the Z-axis guide seat comprises a Z-axis guide cavity defined by a Z-axis supporting plate, a Z-axis outer plate, a left side plate and a right side plate, and the extending direction of the Z-axis guide cavity is perpendicular to the extending direction of the X-axis guide cavity; wherein the outer vertical plate comprises a main mounting hole and a main supporting plate, the main supporting plate and the main mounting hole form a mounting space, the air bearing is arranged in the mounting space, a full-coating structure is formed in the X-axis direction and the Z-axis direction, the bearing capacity is large, the precision can be guaranteed at the same time, and meanwhile the bearing capacity is improved. By means of the installation mode, all the air bearings are easy to install and debug, and the installation and debugging process is greatly simplified.

The invention relates to a normal detection method and device, a three-coordinate measuring instrument and a readable storage medium. The method comprises the following steps: determining an initial normal direction of a model surface based on a to-be-measured object model displayed on a screen; determining an observation direction corresponding to the screen, and determining an angle difference value between the observation direction and the initial normal direction; the observation direction is related to a projection coordinate system used by the screen display picture, and the observation direction represents a direction in which a sight line faces the screen; judging whether the initial normal direction is matched with a measurement path or not according to the angle range of the angle difference value; the measurement path is a detection path of a probe of the three-coordinate machine. The method can give consideration to both accuracy and high efficiency.

The utility model relates to the field of part maintenance, in particular to a comprehensive testing fixture for automobile part machining, which comprises a bottom plate, a plurality of supports fixedly connected to the upper end face of the bottom plate, a top plate fixedly connected to the upper ends of the supports, and a tested part supported and mounted at the upper end of the top plate, and the shape of the tested part determines the mounting positions and shapes of the supports and the top plate. Wherein the upper end surfaces of the bottom plate and the top plate are fixedly connected with a plurality of vertical plates, and the positions and shapes of the vertical plates are determined by the shape of a detected part; the beneficial effects of the utility model are that through using the special hole position degree comprehensive testing fixture, after each product is processed, a field worker installs the product on the comprehensive testing fixture, and whether the hole position degrees of the front and back surfaces and the side surfaces of the product meet the requirements is tested through a mode of inserting a needle gauge, thereby solving the problem that the hole position degree meets the requirements in the original operation mode; in the prior art, a professional three-coordinate measuring machine and a full-time inspector are required for inspection, so that the processed products can be detected one by one by common employees.