519 results about "Coordinate-measuring machine" patented technology

The invention provides a cast workpiece three-coordinate structured light rapid measurement system, and relates to the technical field of industrial automatic measurement, and the system comprises a calibration parameter module which is used for calibrating a standard ball, building an initial conversion relation between a structured light coordinate system and a three-coordinate measuring machine world coordinate system, and collecting temperature, humidity and vibration data in real time; dynamically updating the conversion relation to form calibration parameters; and the measurement path planning module is used for dividing the casting workpiece into a plurality of measurement areas based on the calibration parameters, planning a motion path of the three-coordinate measuring machine and driving the motion platform to move to each measurement position. According to the invention, full-process automation from calibration, measurement to modeling analysis of the casting workpiece and the advantage of comprehensive quality analysis are realized, and a reliable three-dimensional measurement and quality control solution is provided for the casting industry.

The invention belongs to the technical field of three-coordinate measurement, and particularly discloses a space parameter measuring system based on a three-coordinate measuring machine, which comprises a measuring platform, a supporting arm, an X-axis driving module, a Y-axis driving module, a Z-axis driving module and a measuring assembly, and is characterized in that a motion controller is arranged at the top of a control box to control each driving module to move. A data acquisition module, a dynamic compensation module, a parameter fusion module and an execution control module are integrated in the box, the data acquisition module acquires multi-source and environmental parameters, the dynamic compensation module outputs a compensation instruction according to the parameters, the parameter fusion module outputs fusion point cloud coordinates, and the execution control module sends the instruction to a motion controller to drive three axes to move according to a preset path. According to the invention, a multi-module collaborative architecture is constructed, contact and non-contact measurement modes are combined, the problem of precision attenuation of a traditional three-coordinate measuring machine is solved, error dynamic correction is realized, and the measurement adaptability to high-precision workpieces is improved.

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 relates to a coordinate measuring machine with a ram anda probe head ora sensor oran articulating head / unit orwith an articulating head / unit with a probe head or sensor positioned on the articulating head / unitand / orwith an interfacein which the probe head or the sensor or an adapter for the articulating head / unit and / or the interface is / are positioned at least partially in the ram.

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.

A coordinate measuring machine (CMM) for determining spatial coordinate data of an object point on a workpiece. The CMM comprising, a first limb, a probing element, a second limb, and a coupling interface. The probing element provides probing data regarding an interaction between a sensing area and the object point. The first limb connects the sensing area to a first proximal end. The coupling interface is configured to provide coupling data regarding an interaction between a coupling area and a reference point having a defined spatial relationship to the object point. The second limb connects the sensing area to a second proximal end mechanically constrained to the first proximal end.

The invention belongs to the technical field of precision part machining, and discloses a precision part machining precision error compensation technology, high-precision measuring equipment comprises a laser interferometer and a coordinate measuring machine, a numerical control system calculates the compensation amount of each axis of a machine tool according to a model and carries out dynamic adjustment, and an online tool measuring system comprises a tool compensation probe. The laser interferometer carries out interference measurement through reflection of a laser beam and a machine tool measuring part so as to obtain the measurement precision, and through cooperation of the laser interferometer, the coordinate measuring machine and the cutter compensation probe, the numerical control system calculates the compensation amount of each axis of the machine tool according to a model and carries out dynamic adjustment. The laser interferometer performs interference measurement through reflection of a laser beam and a machine tool measuring part, ensures parallelism and perpendicularity, checks error changes of the machine tool at different working temperatures, detects motion errors of the machine tool at different temperatures by using the laser interferometer, and compensates the errors according to the temperature changes.

The invention discloses a grating reading head adaptive mechanism of a three-coordinate measuring machine, and relates to the technical field of grating reading heads, the grating reading head adaptive mechanism comprises a grating ruler and a reading head horizontally sliding relative to the grating ruler, and a mounting frame for mounting the reading head is fixedly arranged in a support frame; a supporting rod piece capable of sliding in the supporting frame and a driving unit used for driving the supporting rod piece to slide are further arranged in the supporting frame, and at least one set of limiting unit and cleaning unit are arranged at the end, close to the grating ruler, of the supporting rod piece; the limiting unit comprises a fixing rod fixedly connected with the supporting rod piece, a limiting rod fixedly connected to the fixing rod and an elastic rod fixedly connected with the limiting rod. A limiting groove is formed in the position, corresponding to the limiting rod, of the grating ruler; the distance between the limiting unit and the grating ruler is smaller than the distance between the cleaning unit and the grating ruler. The problem of inaccurate positioning caused by wire slipping is effectively avoided, and the grating ruler can be effectively and automatically cleaned.

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 discloses a three-coordinate measuring machine re-measurement system and a control method, and belongs to the technical field of three-coordinate measurement, the three-coordinate measuring machine re-measurement system comprises a support, a workbench, a portal frame, a detection system, a first electric telescopic rod, a second electric telescopic rod, a third electric telescopic rod, a sliding rail, an adjusting column and a gradienter, and further comprises a main control module and a control logic module, the control logic module controls the three-coordinate measuring machine to execute a measuring task through electric connection, ceramic shells are arranged on the surfaces of the portal frame, the connecting frame, the sliding clamping block and the sliding rail, and the characteristics of high rigidity and low expansion coefficient of ceramic materials are utilized, so that deformation of a traditional metal structure caused by temperature change or long-term friction is avoided. Friction loss is reduced while the contact area is reduced, and the track precision when the portal frame translates along the X axis is ensured. The rigid support of the ceramic shell enables the equipment not to depend on a strict constant temperature environment, eliminates a thermal deformation error source from the mechanical structure level, and improves the measurement stability in a complex environment.

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 discloses a centrifugal compressor assembly error modeling method integrating manufacturing error and assembly deformation, which comprises the following specific steps: S1, measuring an assembly surface by adopting line laser and a three-coordinate measuring machine, assembling surface point clouds of all assembling parts of the centrifugal impeller of the centrifugal compressor are obtained through feature extraction, a surface model of the assembling parts in interference fit with the centrifugal impeller is reconstructed based on an NURBS curved surface modeling method, and deformation calculation of interference fit of the centrifugal impeller is conducted; s2, calculating a matching error of the assembly surface of each assembly part by adopting a point cloud constraint registration method; and S3, based on the assembly constraint relation between the matching surfaces and the improved Jacobian-spinor model, a centrifugal compressor centrifugal impeller assembly chain error transfer model is established. The method has the advantages that the problem that error sources are not comprehensively considered in the actual assembly process is solved, the constraint relation between assembly surface matching errors is considered, and the assembly chain error transmission model is constructed and used for improving the assembly error prediction precision.

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 utility model provides a flexible belt transmission device and a three-coordinate measuring machine, the flexible belt transmission device comprises a driving motor, a driving belt wheel, a driven belt wheel, a transmission belt and a flexible connecting mechanism, the transmission belt is provided with a first joint end and a second joint end; the flexible connecting mechanism comprises a to-be-transmitted part connecting part, a first floating connecting part, a second floating connecting part and an elastic part. The first floating connecting piece is fixedly connected with the first connector end, the second floating connecting piece is fixedly connected with the second connector end, a connecting part is formed on the part to be connected with the transmission part, and the first floating connecting piece and the second floating connecting piece are both separated from the connecting part by a certain distance. And elastic components are arranged between the first floating connecting piece and the connecting part and between the second floating connecting piece and the connecting part. According to the flexible belt transmission device, the flexible connecting mechanism can absorb vibration and impact energy of the transmission belt, so that transmission is more stable; the influence of vibration of the transmission device on a measuring system can be weakened, and the measuring precision of the three-coordinate measuring machine is improved.

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 relates to a mold for forming a large-size three-hole ceramic guide rail and a forming process, and belongs to the technical field of ceramic forming. The die comprises an auxiliary die sleeve, a rubber sleeve, a rubber plug, a positioning disc and a mandrel. The rubber plugs are located at the upper end and the lower end of the rubber sleeve, and the positioning disc and the mandrel are located in the rubber sleeve; integrated forming of the large-size aluminum oxide ceramic guide rail is achieved, the technical barrier of the manufacturing technology of the large-size aluminum oxide ceramic guide rail is overcome, and the domestic blank is filled up; the qualified large-size aluminum oxide ceramic guide rail for the large-size three-coordinate measuring machine is prepared through ingenious mold design and assembly, a tight sealing process, a novel demolding process and transfer tool design; according to the method, the product percent of pass is increased, and theoretical and technical support is provided for industrialization of the large-size three-hole guide rail.

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 invention discloses a Y-direction transmission mechanism of a gantry three-coordinate measuring machine, and relates to the technical field of gantry three-coordinate measuring machines, the Y-direction transmission mechanism comprises a main shoulder, a Y-direction guide rail and a Y-direction rack, and the Y-direction rack is arranged on the top surface of the Y-direction guide rail along the extension direction of the Y-direction guide rail; the transmission assembly comprises a gear speed reduction disc, the gear speed reduction disc comprises a main gear seat installed on the main shoulder, a main gear is arranged in the main gear seat in a matched mode, an anti-backlash gear is fixedly arranged in the main gear in a sleeved mode, the main gear and the anti-backlash gear are both meshed with the Y-direction rack, and the main gear is connected with a speed reduction disc; the motor is connected with the speed reduction disc through a belt and used for driving the speed reduction disc to rotate. By reasonably designing the supporting point distribution of the main shoulder of the gantry structure, the layout of the Y-direction guide rail and the layout of the transmission assembly, the rigidity and stability of the structure can be improved, the bearing capacity of the measuring machine is improved, the load is resisted, the vibration influence is reduced, and the transmission precision and stability are 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 present application relates to the technical field of optical scanning measurements, and specifically relates to a blade shape measurement method based on motion path planning, and an optical scanning apparatus. The blade shape measurement method based on motion path planning comprises: using a three-coordinate measurement machine to obtain profile discrete point data of a blade template to be measured, and fitting same into a blade profile; dividing the blade profile into four arc sections; arranging n reference points on each arc section, and making extension lines outwards from the reference points in a normal direction; sequentially connecting outer end points of all the extension lines to obtain a preliminarily planned motion path; using an optical scanning apparatus to measure and scan said blade template in view of the preliminarily planned motion path, so as to obtain a planned motion path; and on the basis of the planned motion path, measuring and scanning a blade to be measured. In the present application, a blade template to be measured is used, a blade profile is moved outwards in a normal direction to acquire measurement data, and a motion path planned by an optical scanning apparatus is then obtained, thereby reducing the deviation of a measurement result, and improving the measurement precision.

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 a cross beam assembly. A cross beam body is provided with a horizontally-arranged first plane. The cross beam adjustor is used for supporting the cross beam body and adjusting the height or the inclination angle of the cross beam body; the cross beam adjuster comprises a first seat body, a second seat body, a first screw, a first adjusting stud and a belleville spring; the first screw is used for connecting the cross beam body with the first adjusting stud, and the first adjusting stud is in abutting fit with the first plane; at the first section end of the cross beam body, a plurality of first screws in the Y direction are rigidly connected with the first seat body through first adjusting studs; at the second cross section end of the cross beam body, a plurality of first screws in the Y direction are elastically connected with a second seat body through a belleville spring and a first adjusting stud in sequence; at the second section end, at least one first screw close to the symmetry axis position of the multiple belleville springs is rigidly connected with the first base body through a first adjusting stud. On the premise that the precision requirements of all parts of the cross beam assembly are met, installation is simplified.

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.