2388 results about "Reference surface" patented technology

Disclosed in the present invention is a large complex ellipsoidal part machining deformation control method based on dynamic cutting planning. The method comprises: performing initial clamping on a blank part, constructing a machining coordinate system, completing reference non-contact measurement and reference surface fitting of inner and outer shape surfaces of the blank part, and completing the division of a generatrix tangent plane; on the basis of product feature decomposition, completing in the same coordinate system the comparison between each theoretical section and an actually measured section, completing cutting evaluation based on the generatrix tangent plane in a machining area, and guiding overall machining route planning and local machining route planning; on the basis of route planning and a cuttable margin, using an adjustable support device to complete part clamping based on dynamic adjustment, so as to realize stable cutting under a variable cutting thickness, and thereby solving the problem of overall deformation control of a large complex ellipsoidal part; and completing high-rib feature twist amount identification in combination with adjustable support, and completing tool path trajectory offset compensation on the basis of a relationship between a circumferential offset and an allowance, and thereby realizing precise compensation machining of a mesh after a local twist. The present invention solves the key difficulties of high-rib local twist deformation compensation and overall deformation control on the basis of ensuring the precision of the residual wall thickness during numerical control machining of a large complex thin-walled ellipsoidal part, thereby further improving the overall manufacturing reliability of a large complex ellipsoidal part.

The invention discloses a shoulder joint assembly, an arm assembly and a humanoid robot, the shoulder joint assembly comprises a shoulder joint shell, a first driving part and a second driving part, the shoulder joint shell comprises a first barrel and a second barrel, the peripheral surface of the second barrel is connected with one end of the first barrel in the axial direction, the first barrel is provided with a first axis, and the second barrel is provided with a second axis; the first cylinder comprises a first axis and a second axis, the first axis and the second axis intersect and are perpendicular, a surface which passes through the first axis and is perpendicular to the second axis is a reference surface, the second cylinder comprises a first surface and a second surface which are opposite in the axial direction, and the distance between the first surface and the reference surface is smaller than that between the second surface and the reference surface; the first driving part is coaxially connected with the first barrel to drive the shoulder joint shell to rotate around the first axis, the second driving part is connected with the second barrel and the large arm assembly to drive the large arm assembly to rotate around the second axis, the middle point of the second driving part in the axial direction is located on the first axis, and the lightweight degree of the shoulder joint assembly is improved.

The invention relates to a method and a system for determining the elevation of an offshore wind turbine foundation scouring analysis datum plane, and the method comprises the steps: carrying out three-dimensional modeling through seabed three-dimensional point cloud data, analyzing the thickness of shallow sludge through high-frequency and low-frequency sounding data, and obtaining stratum distribution through combining with shallow profile data; calculating a theoretical scouring depth based on the water flow data, and reconstructing a three-dimensional grid data model; calculating and screening a suitable area through a terrain gradient factor, and constructing a seabed base plane calculation data set; and calculating the average elevation of each fan basic area as the datum level elevation of scouring analysis. According to the method, refined reconstruction of the regional landform of the offshore wind turbine foundation is realized, the accuracy and scientificity of determining the elevation of the reference surface are improved, reliable data support is provided for stability evaluation and design optimization of the offshore wind turbine foundation, the structural safety risk caused by scouring is remarkably reduced, and the economic benefit is improved. And the overall safety and economic benefits of the offshore wind power plant are improved.

The invention provides a three-dimensional galvanometer correction method and laser processing equipment. The method comprises the steps of controlling a motion platform to move to a reference surface of a galvanometer assembly; determining a contour line of a circle with a preset value as a radius on a medium of the motion platform by taking the central point of the galvanometer assembly as a circle center; a plurality of first marking grids are marked on the contour line in the preset direction through laser, each first marking grid in each first marking grid corresponds to one deflection angle, and each first marking pattern corresponds to the position of one zoom lens; detecting each first marking grid based on a visual component so as to determine a first target position corresponding to the focal point of the laser from the positions of the zoom lens corresponding to the plurality of first marking patterns of each first marking grid; fitting the radius of the contour line and the first target positions corresponding to the plurality of first marking grids to obtain a first curve; and compensating the position of the zoom lens according to the first curve. By means of the method, the three-dimensional galvanometer can be accurately corrected.

The invention relates to the technical field of building templates, and particularly provides a building template flatness threshold partition detection method based on normal vector constraint RANSAC, which comprises the following steps: performing three-dimensional laser scanning on a building template to obtain high-density point cloud data; preprocessing operations such as denoising and downsampling are carried out on the collected point cloud data, so that the data quality is improved; fitting a reference surface of the template based on the preprocessed point cloud data by using an improved RANSAC algorithm, and introducing a unit normal vector to ensure the correct direction of the reference surface; calculating the vertical distance from each point cloud point to the reference surface to obtain a deviation value; independently setting a deviation threshold value according to a building specification, dividing the deviation value into different grades, and distinguishing and displaying the deviation value on the three-dimensional point cloud model through colors; and a visual result containing the three-dimensional point cloud model and the color identification is output, the flatness condition of the template is visually displayed, and the method has the effects of automatic measurement, high efficiency and high precision.

The invention provides a strain generation structure and a force sensor. The strain generating structure comprises: at least one strain body configured to strain under the action of an external force; wherein at least one concave-convex structure is formed on the surface of the at least one strain body, the concave-convex structure is provided with a concave part and a convex part adjacent to the concave part, the convex part of the at least one concave-convex structure is provided with at least one strain gauge, and the strain gauge is configured to sense the strain generated by the strain body; moreover, the strain generating structure is provided with a reference surface perpendicular to the axis of the strain generating structure, and each strain gauge of the strain generating structure is parallel to the reference surface. According to the strain generating structure, the strain gauges can be attached to a plane facilitating machine operation, and the detection performance of a six-dimensional force sensor is considered.

The invention provides a substation equipment multi-view point cloud data fusion three-dimensional modeling method and system. The method comprises the steps of obtaining original point cloud data under multiple views and synchronously updating an equipment surface feature topological relation; setting a registration reference surface matched with the geometric structure of the equipment according to the spatial distribution characteristics of the point cloud; carrying out rigid alignment by adopting a point cloud registration algorithm based on a feature weight; and calling a curvature constraint-based three-dimensional reconstruction algorithm through the registration error parameters to generate a high-precision grid model. Wherein the registration reference plane setting needs to judge the point cloud coverage integrity and the overlapping area condition, and when the condition is not met, the collection view angle is adjusted or the point cloud data is complemented; the registration condition is judged through a curvature consistency index; the three-dimensional reconstruction process comprises voxel down-sampling, curved surface function construction and grid optimization, and the final model needs to be subjected to electrical safety verification. According to the method, high-precision three-dimensional modeling of the substation equipment can be realized, and the geometric feature reduction degree and the electrical safety verification reliability are improved.

The invention discloses a transmission housing end face distance measuring device, which relates to the technical field of transmission production equipment and comprises a measuring device rack and a measuring device slidably mounted on the measuring device rack, and a housing base is arranged below the measuring device. The measuring device comprises a mounting frame, a measuring sensor is mounted in the mounting frame, a contact screw mounting plate is movably arranged in the mounting frame, and a contact screw is arranged at the position, corresponding to the measuring sensor, of the contact screw mounting plate. The lower end of the mounting frame is connected with a reference surface contact plate, the contact screw mounting plate is located on the upper side of the reference surface contact plate, the lower side of the contact screw mounting plate is fixedly connected with a third connecting column, and the third connecting column slidably penetrates through the reference surface contact plate and then is connected with a measuring surface contact plate. The device can accurately measure the distance between the two end faces of the transmission housing, is high in measurement precision, is high in measurement efficiency, is good in measurement reproducibility, and can effectively guarantee the service life of a transmission.

The utility model provides screen defect detection equipment which comprises a thickness measuring mechanism used for measuring the thickness of an electronic product to be detected; the jacking mechanism is used for bearing the to-be-detected electronic product and can lift the to-be-detected electronic product according to a measurement value of the thickness measurement mechanism, so that a screen of the to-be-detected electronic product is located on a detection reference surface; the displacement mechanism is connected with the jacking mechanism and can drive the jacking mechanism to displace, so that the screen of the to-be-detected electronic product displaces on the detection reference surface; and the screen detection mechanism faces a detection position on the detection reference surface and can detect the screen of the to-be-detected electronic product passing through the detection position. Therefore, the defect detection can be performed on the screens of the to-be-detected electronic products with different thicknesses, and a plurality of types of products can be simultaneously produced in a mixed manner, so that the productivity is improved.

The invention, which relates to the technical field of the radar system, discloses a swash plate machine phase-sweeping radan installation angle adaptive correction method comprising the following steps: acquiring three-axis attitude angle data of an installation reference surface, and synchronously acquiring azimuth angle rotation data of a radar antenna; based on the three-axis attitude angle data of the installation reference surface, establishing a coordinate transformation matrix from a radar antenna coordinate system to an inertial coordinate system, and mapping the three-axis attitude angle data of the installation reference surface to the inertial coordinate system; obtaining a beam scanning conical surface deviation angle according to the coordinate transformation matrix and azimuth angle rotation data of the radar antenna; generating antenna attitude correction according to the beam scanning conical surface deviation angle; and inputting the antenna attitude correction quantity into an antenna driving controller, adjusting the attitude of two axes of pitching and orientation of the antenna, and compensating the beam scanning conical surface deviation. According to the method, the precise coordinate transformation matrix and the angle difference compensation model are established, and the inertial measurement unit and a closed-loop feedback control mechanism are combined, so that the self-adaptive real-time correction of the mounting angle is realized.

The invention relates to the technical field of computer vision and three-dimensional measurement, in particular to a three-dimensional point cloud semantic segmentation and measurement reference surface intelligent fitting system and a method thereof, which are mainly applied to scenes needing accurate three-dimensional space understanding, such as topographic survey, mining, urban planning, intelligent driving and industrial detection. The system comprises a data acquisition module, a preprocessing module, a feature extraction module, a reference surface acquisition module and a pixel feature conversion module. Three-dimensional point cloud data are collected through multi-sensor fusion, and the data quality and integrity are improved. A cascade filtering preprocessing process is innovatively designed, and the data quality is remarkably improved. The feature extraction module generates semantic tags, the reference surface acquisition module calculates a probability optimal fitting plane, and the pixel feature conversion module realizes multi-scale feature output. According to the method, the three-dimensional point cloud processing precision and efficiency are effectively improved, and powerful technical support is provided for the field of computer vision and three-dimensional measurement.

The invention discloses a road corrugated plate integrity detection method based on a vehicle-mounted three-dimensional camera, and relates to the technical field of traffic infrastructure intelligent management and maintenance, and the method comprises the steps: generating a system configuration file through camera internal geometric parameters and multi-line light plane calibration; collecting an image sequence in real time, and extracting a light strip center pixel coordinate; based on a system configuration file, carrying out back projection on the pixel coordinates to solve a three-dimensional intersection point to generate three-dimensional point cloud data of the waveform plate; extracting the three-dimensional point cloud data to obtain the three-dimensional point cloud data of the segmented waveform plate; fitting a reference surface to calculate a height deviation value from a point to a plane; sampling according to multiple layers and multiple intervals and forming a feature string; comparing and identifying defect types and degrees bit by bit; and analyzing the aging trend of the corrugated plate based on historical data. According to the method, the multi-level three-dimensional geometrical characteristics of the surface of the corrugated plate can be efficiently obtained, and automatic identification and positioning of defects are realized.

A vertical adjustment mechanism for adjusting the height or elevation of one or more support structures relative to the reference surface. A chair and spacer may be used to adjust the elevation of the one or more support structures. The spacer may include one or more retention clips and / or receptacles.

The invention provides a plate heat exchanger which is characterized in that a first plate sheet comprises a first trough and a second trough which are adjacent, the first trough and the second trough are sunken downwards relative to the same reference plane P1, and the depth of the first trough is larger than that of the second trough; the second plate sheet comprises a first wave crest and a second wave crest which are adjacent, the first wave crest and the second wave crest protrude upwards relative to the same reference plane P2, and the height of the first wave crest is larger than that of the second wave crest; the first wave crest and the first wave trough are mutually contacted and fixedly welded; the second wave crest is at least partially opposite to the second wave trough, and the height of the second wave crest is unequal to the depth of the second wave trough. According to the plate heat exchanger, through the structural design, the surfaces of the two heat exchange plates forming the inter-plate flow channel have different flow resistances, and flow channels with asymmetric sections are formed between the plates, so that the turbulence degree is larger when fluid flows through, and the heat exchange performance of the heat exchanger is improved.

The invention discloses a fuel cell stack core straightness and perpendicularity detection device and method. A reference surface is positioned through a visual camera, and a transmission mechanism drives a laser line scanning instrument to perform line scanning point taking on an upper end plate and fit a reference plane; moving a visual camera through an X-axis or Y-axis transmission mechanism, scanning a long-edge extension line and a short-edge extension line of the upper end plate on a reference surface of the upper end plate along the horizontal direction, obtaining an intersection point, determining a coordinate origin, and performing reference determination by taking the long-edge extension line and the short-edge extension line as X-direction or Y-direction reference of a coordinate system; the transmission mechanism drives the laser line scanning instrument to carry out line scanning on the straightness of the side edge of the reactor core assembly, straightness line scanning data are obtained, line scanning point position coordinate values are obtained, data analysis is carried out according to the coordinate values, and compared with the prior art, high-precision detection of the straightness and perpendicularity of the fuel cell stack core is achieved, and the detection precision is improved. And the assembly quality and performance of the reactor core assembly are ensured.

The invention relates to the technical field of solar cells, in particular to a laminated solar cell and a photovoltaic module. In the embodiment of the invention, the area of the orthographic projection of a first passivation contact layer on a reference surface is configured to be smaller than the area of the overlapping projection of a top cell unit and a bottom cell unit, and a first passivation layer is arranged on a first sub-surface exposed by the first passivation contact layer and a first target surface of the first passivation contact layer. The opposite side surfaces of the composite layer and the first passivation layer are in contact with each other, so that the efficiency of the battery can be improved.

The invention relates to an intelligent door anti-pinch method and system, an intelligent door comprises a frame body and a movable leaf capable of being opened and closed in a sliding mode in the frame body, and the method comprises the steps that the rotation angle value of a motor shaft of a motor unit is collected in real time; measuring an actual distance value between a preset measuring point on the movable leaf and a corresponding reference surface on the door frame in real time through a distance sensor; calculating a theoretical displacement value of the movable fan relative to the initial zero point based on the rotation angle value; continuously comparing the deviation value between the theoretical displacement value and the actual distance value in the displacement process of the movable fan; when the deviation value exceeds a preset safety threshold value, it is judged that the foreign matter exists; and sending a control instruction for stopping door closing or reverse operation. According to the scheme, whether foreign matter blocking exists or not is effectively recognized by comparing the deviation between the motor rotation angle and the theoretical displacement and the deviation between the sensor distance measurement and the actual distance, and non-contact obstacle clamping judgment is achieved. And the method is suitable for various forms of intelligent sliding door systems.

The invention discloses a multifunctional hydraulic system experiment table, which relates to the technical field of hydraulic system experiment tables and comprises a time base line synchronous control module, a phase lock correction stability control module, a false peak identification and correction module, a multi-dimensional fault-tolerant judgment control module and a reverse energy slow-release anti-reverse module. And the time base line synchronous control module is used for establishing a cross-sensor unified time base line control structure, generating a synchronous reference surface by using a high-stability crystal oscillator signal, and executing nanosecond phase calibration on sampling signals of the pressure sensor and the flow sensor by taking the synchronous reference surface as a unified time reference. According to the invention, high-precision synchronous acquisition of pressure and flow signals is realized through unified time base line and phase locking correction, and high-pressure transient test data is ensured to be real and stable; and meanwhile, control logic is reconstructed, and an energy slow release strategy is introduced, so that the pressure relief process is stable and controllable, pump reverse rotation and structural impact are avoided, and the safety, reliability and self-healing stability of the experiment table are remarkably improved.

The invention provides a production control method and system based on SPC alarm linkage process locking, and relates to the technical field of quality management and control, and the method comprises the steps: deploying an SPC sensing node used for collecting technological parameters at a cutting edge position where a machining tool of production equipment is in contact with a workpiece, or at a contact point where a probe of online measurement equipment is in contact with the surface of the workpiece; the method comprises the following steps: acquiring process parameter data of a key production process in real time through an SPC sensing node deployed at a cutting edge position or a contact point; inputting the process parameter data as real-time data or small sample expansion data into an SPC judgment engine; and performing statistical process control analysis on the real-time data or the small sample expansion data through an SPC judgment engine so as to model data clusters which are densely distributed and have stable parameters in the data into a virtual reference curved surface representing a normal state domain. According to the invention, the accuracy of abnormity determination can be improved, and timely management and control of quality abnormity and minimization of production loss can be realized.

The invention relates to the field of optical system calibration, in particular to an optical camera position and attitude calibration method. According to the method, a least square method is adopted, the flatness h of an imaging assembly installation reference surface and the perpendicularity p between the imaging assembly installation reference surface and an optical lens installation reference surface are subjected to least square fitting, the correction misalignment amount delta is obtained, reference is provided for follow-up coaxial adjustment of an optical lens of an optical camera and an imaging assembly, and the calibration precision is improved. By adopting the beam splitter prism assembly, auto-collimation images of the beam splitter prism assembly can be simultaneously incident to different directions of the accurate measurement mirror assembly by only using one laser theodolite; compared with a traditional measurement method adopting a plurality of laser theodolites, the method has the advantages that the rotation error caused by mutual aiming of the plurality of laser theodolites is overcome, and the calibration precision and efficiency are improved.

The invention discloses a vibration monitoring and displacement identification method for a towering steel structure based on machine vision, and relates to the technical field of towering steel structures. Comprising the following steps: S1, visual acquisition and reference calibration: arranging visual acquisition equipment in the height direction and the circumferential direction of the towering steel structure according to mechanical characteristics of a vertical stiffness mutation region and a dynamic response sensitive part of a geometric asymmetric distribution characteristic of the structure; a three-dimensional coordinate system is established based on a structure installation reference surface, fixed reference monitoring points are arranged in a tower foot symmetric area and a mast antenna root, three-dimensional coordinate data of the reference points are synchronously collected, the collection range completely covers a node concentration area and a key stress part of a structure transparent area, and a continuous image sequence of the structure surface is captured in real time; the resolution and the sampling frequency of the visual acquisition equipment are determined according to the inherent frequency of the structure and the vibration response characteristics, and calibration is completed through reference point coordinates after the equipment is installed; s2, carrying out image preprocessing and feature enhancement; S3, carrying out feature point extraction and trajectory tracking; S4, carrying out vibration displacement calculation and twin fusion; and S5, carrying out multi-source verification and structural state linkage treatment.

The invention provides an assembling and adjusting method of an off-axis free-form surface ray machine structure. The off-axis free-form surface ray machine structure comprises a main frame, a primary mirror and a secondary mirror (or a third mirror). The adjustment system comprises a CGH device and an interferometer. When an optical machine structure is designed and processed, a mounting reference surface and a positioning feature mark are processed on a main frame and an optical element in a high-precision processing mode. In the installation and adjustment process, the optical element is connected with the main frame through the installation reference surface, and coarse positioning installation is achieved; fine positioning and adjustment are carried out on the assembly body through the positioning feature marks; and finally, the light emitted by the interferometer sequentially passes through elements in a light path and returns to the interferometer to form interference fringes, and the pose of the secondary mirror (or the third mirror) is adjusted by taking the primary mirror as a reference until zero fringes are displayed on the interferometer. According to the method, corresponding structure reference transmission is considered during design of an optical machine structure, and rapid integrated assembly and adjustment of the off-axis free-form surface optical machine system are realized through positioning feature marking during assembly, so that the assembly and adjustment precision is high.

The invention belongs to the technical field of image processing, and particularly relates to a PCB plug hole flatness detection method and system based on 3D point cloud data, and the method comprises the steps: obtaining the original 3D point cloud data of a PCB, and intercepting a plug hole center and a local point cloud block according to a design file; a copper ring point cloud set is extracted, and the fitting weight of each sampling point is calculated based on the distance from each sampling point in the set to the center of the plug hole, the unit normal vector of the sampling point and the original height of the sampling point; performing weighted least square fitting on all the copper ring point clouds by using the fitting weight to obtain a virtual reference curved surface; extracting an effective point cloud set, calculating the correction height of the effective point cloud, and calculating a flatness index in combination with the mean value of the correction height and the module length of the local gradient; the flatness index of the physical space is obtained, and whether the flatness of the plug hole is qualified or not is judged. According to the method, the problem of misjudgment caused by board warping is effectively solved, and the detection precision and the anti-noise capability are improved.

The invention discloses a method for detecting the head height of a bolt, and the method comprises the following steps: carrying out the projection of the head of the bolt through employing a structured light 3D camera, and obtaining the three-dimensional point cloud data of the head of the bolt; after abnormal points are processed, a bolt head area template is constructed; bolt head positioning is carried out on the bolt head area template and the actual detection area; selecting a plurality of local point cloud data in the bolt head area, and setting the local point cloud data as bolt head positions; selecting a plurality of local point cloud data on the outer side of the bolt head area, and setting the local point cloud data as bolt reference surface positions; and calculating the distance between the bolt head position and the bolt reference surface position by using a point-to-plane algorithm. The bolt head height detection method provided by the invention has the advantages of one-key operation, simple operation, fast measurement speed, automatic data and picture storage, and solving of pain points which cannot be traced by conventional contact measurement.

The embodiment of the invention provides a tab cracking detection method and device, tab welding equipment and a battery production system. The tab cracking detection method comprises the following steps: acquiring three-dimensional coordinate data of a plurality of reference areas to construct a reference surface; acquiring three-dimensional coordinate data of the surface of the tab, and determining a to-be-detected analysis area of the tab by comparing the height characteristic difference between the surface of the tab and the reference surface; and determining a detection result of whether the tab is cracked or not based on at least one of a height difference criterion and a morphology mutation criterion of the to-be-detected analysis area relative to the reference surface. Compared with a traditional manual visual inspection mode, the detection accuracy of quality defects such as tab cracking can be remarkably improved.

A surface estimation method includes a region-setting step and an estimation step. In the region-setting step, a reference region that is one of a three-dimensional region and a two-dimensional region is set. The three-dimensional region includes three or more points and is set in a three-dimensional space. The three-dimensional space includes three-dimensional coordinates of three or more points on a subject calculated on the basis of a two-dimensional image of the subject. The three-dimensional coordinates of the three or more points are included in three-dimensional image data. The two-dimensional region includes three or more points and is set in the two-dimensional image. In the estimation step, a reference surface that approximates a surface of the subject is estimated on the basis of three or more points of the three-dimensional image data corresponding to the three or more points included in the reference region.

The invention discloses a machine tool straightness error calculation method and system based on linear guide rail deformation, and relates to the technical field of machine tool straightness precision and straightness error evaluation. The method comprises the following steps: acquiring machining parameters of a linear guide rail and a lathe bed mounting surface in a machine tool mounting process; determining the contact point position of the linear guide rail and the mounting surface of the lathe bed and the normal bearing force by combining the stress balance condition of the linear guide rail; calculating the linear guide rail deformation amount caused by the dead weight of the linear guide rail, the bolt pre-tightening force and the normal supporting force; calculating a deviation value of the linear guide rail reference surface; and calculating the actual straightness of the linear feed shaft based on the relationship between the deformation of the linear guide rail and the straightness. According to the method, the calculation process better conforms to actual assembly of the linear guide rail, and the problems of idealization, limitation and the like in an existing mathematical model can be solved.

The utility model provides a lens antenna, which relates to the technical field of antennae and comprises a luneberg lens, an earth radiation unit, an air radiation unit, a horizontal adjusting mechanism and a tipping adjusting mechanism. The center of the Lunberg lens is located on a reference plane, and the reference plane is parallel to the horizontal plane or forms a preset included angle with the horizontal plane. The to-ground radiation unit is arranged towards the center of the luneberg lens in a radiation manner, and the to-ground radiation unit is located above the reference surface; the air radiation unit is arranged towards the center of the luneberg lens in a radiation manner, and the air radiation unit is located below the reference surface; the horizontal adjusting mechanism is used for synchronously adjusting the main radiation direction of the to-ground radiation unit and the main radiation direction of the to-air radiation unit in the horizontal direction; and the tipping adjusting mechanism is used for independently adjusting the elevation angle of the main radiation direction of the air radiation unit. The lens antenna provided by the utility model has the characteristic of multidimensional adjustability, can meet the requirements of low altitude and ground coverage at the same time, and is compact in structure and small in occupied space.

The present invention relates to the technical field of electric power fittings, and specifically discloses a cable fixing fitting, comprising two arc-shaped clamping plates, a straight plate mounted on each arc-shaped clamping plate, and a clamping bolt mounted between the two straight plates. The outer surface of at least one of the two arc-shaped clamping plates is formed with a reference surface and has an arc-shaped chamber inside. A detection mechanism is installed in the arc-shaped chamber, and the detection mechanism comprises: a detection member, the detection member is assembled on the upper part of the arc-shaped clamping plate so as to move up and down, the lower end of the detection member extends into the arc-shaped chamber, and the upper surface of the detection member forms a detection surface; a rolling member, the rolling member is assembled in the arc-shaped chamber; a moving plate, the moving plate is assembled in the arc-shaped chamber so as to move, the lower end of the moving plate contacts the rolling member, and can be pushed by the rolling member to move along the arc-shaped chamber, and the upper surface of the moving plate forms a transmission surface for pushing the lower end of the detection member. The cable fixing fitting can provide real-time feedback of the verticality information of the closed surface of the arc-shaped clamping plate, so as to facilitate timely adjustment and correction.

The invention belongs to the technical field of tool wear measurement, and particularly relates to a machining center tool wear state early warning method based on multi-source data fusion, and the method comprises the steps: calculating a cutting power consumption characteristic through a main shaft load energy mapping model according to the original sampling current and the real-time feeding speed of a main shaft; sliding window sampling is carried out on the cutting power consumption characteristics, and the cutting state disorder degree is calculated; performing nonlinear coupling on the power consumption gradient item and the cutting state disorder degree to obtain a grinding loss stability coefficient; and establishing a dynamic statistical reference surface, and performing cutter state early warning according to the deviation degree of the grinding loss stability coefficient monitored in real time. Instantaneous interference caused by uneven material hardness is effectively recognized and eliminated, meanwhile, signal structure disorder at the initial stage of tool failure is captured, the technical problems that in die steel machining, due to material structure segregation and variable working conditions, the false alarm rate is high, and failure precursor capturing is difficult are solved, and the machining precision is improved. And the monitoring accuracy of the precision machining process is obviously improved.