323 results about "Precision testing" patented technology

The invention relates to the technical field of welding deformation control, and discloses a multi-stage adjusting method and system for steel structure welding deformation control. The method comprises the steps that steel member parameters are measured, a welding deformation prediction model is established, and pre-deformation data are obtained; performing accurate pre-deformation processing according to the data; executing segmented welding and recording a temperature field and a deformation amount; performing local heat treatment on the high-stress area to obtain stress distribution; correcting a deformation area by using multi-point force; and performing precision detection and quality evaluation according to the corrected data to form a control file. According to the method, high-precision control over welding deformation of the complex steel structure is achieved through data transmission and feedback adjustment of all stages.

The invention discloses a surface defect indentation marking and rapid indentation response testing device and method, and relates to the technical field of precise instruments and industrial automatic detection.The surface defect indentation marking and rapid indentation response testing device comprises a supporting unit, a macroscopic moving unit, a rapid switching unit and a precise testing unit, the macroscopic moving unit is arranged on the supporting unit, the rapid switching unit is connected with the macroscopic moving unit, the precision testing unit is arranged on the macroscopic moving unit, and the precision testing unit comprises a scanning structure and an indentation marking structure. The macroscopic moving unit can drive the precise testing unit to move, and the rapid switching unit is used for switching the positions of the scanning structure and the indentation marking structure. According to the surface defect indentation marking and rapid indentation response testing device and method, the positions of the scanning structure and the indentation marking structure can be rapidly switched.

The invention provides a sensor six-connection-assembly rapid precision testing tool, and relates to the technical field of sensor precision testing. The sensor six-connection rapid precision testing tool comprises a fixed seat, a pressurizing air inlet pipe, two groups of cover plates and six groups of sensor bodies. According to the invention, the six groups of sensor bodies are connected with the fixed seat through the cover plate, are fixed through the four screw rods, are clamped at one time, and are tested by using the same air inlet hole, so that the test efficiency and the test precision are effectively improved, and the contact between the positioning pin and the positioning hole is prior to the contact between the detection end and the detection hole; the edge of one end, far away from the cover plate, of the positioning pin, the edge of the detection hole, the edge of the positioning hole and the edge of the mounting hole are all provided with arc chamfers, and the matched parts do not need to be completely aligned when being mutually inserted, so that the installation precision is effectively improved. And the mounting speed can be effectively improved through the arc chamfer.

The invention discloses an integrated gear clamp and a correction and calibration device, a torque transmission structure is integrally cylindrical, and the two ends of the torque transmission structure in the length direction are connected to an inner-end clamp and an external thin-wall gear through splines respectively; the strain gauge is fixed on the outer wall or the inner wall of the middle of the torque transmission structure in the length direction; according to the integrated gear clamp and the correction and calibration device provided by the invention, clamping and measurement of the thin-wall gear are integrated through the inner end clamp, the outer end clamp, the torque transmission structure and the strain gauge assembly, the structure is compact, centering installation and fastening clamping of the loaded thin-wall gear to be tested are met, and online measurement of the torque borne by the thin-wall gear is realized; the centering and torque transmission of the thin-wall gear are separated, high concentricity and large torque transmission are simultaneously met, and the high-precision test requirement is met; the strain gauge is arranged on the torque transmission structure to feed back torsional deformation in real time, the distance between the strain gauge and the tested thin-wall gear is controllable, external interference on test data is small, and the data are reliable.

Systems and methods for ray intersection against primitives are described. Primitive data is encoded efficiently into arrays of fixed-size data blocks using a data format which can be directly consumed for ray traversal. Vertex data in a block is pre-quantized and stored using a fixed-bit quantization grid. Mesh connectivity is encoded using a triangle strips based on control values representing triangle interconnectivity, and a compressed index buffer storing indices for vertices in each strip. Primitives can alternatively be quantized to generate primitive packets, that are stored compactly in, with, or near a leaf node of an acceleration structure. Low-precision intersection testers test a ray simultaneously against primitives to find candidate triangles that require full-precision intersection. Primitives that generate an inconclusive result during low-precision testing are retested using full-precision testers to definitively determine ray-triangle hits or misses.

The invention discloses a Y-axis knife rest reliability test bed with hybrid loading and precision testing integrated and a test method, and belongs to the technical field of reliability testing of key components of numerical control machine tools. The test bench comprises a test bench base, an automatic rotary table, a torque loading device, a loading device base, a dynamic force loading device, an analog loading rod, a Y-axis positioning precision testing device, a tested Y-axis tool rest, a transposition precision testing device and a console. A tool rest bottom plate of the test bench base is controlled by a console to move left and right and up and down, and a tested Y-axis tool rest is installed on the tool rest bottom plate. The automatic turntable comprises a turntable driven by a motor; the torque loading device comprises a generator fixed on the rotary table, and the output end of the generator is fixedly connected with a magnetic gear; the analog loading rod comprises a vertical shaft and a horizontal shaft which are in vertical transmission; the lower end of the vertical shaft is in electromagnetic induction non-contact connection with the magnetic gear; the tail end of the horizontal shaft is connected with the output end of the tested Y-axis tool rest. And the dynamic force loading device can apply a load to the analog loading rod shell.

The invention discloses a device and a method for testing rigidity, precision and performance retentivity of an electric linear actuator, and belongs to the technical field of equipment testing. The device comprises a supporting module, a force loading module, a measuring module and a control module. The supporting module is used for fixing the to-be-tested electric linear actuator and the force loading module; the force loading module is provided with a servo electric cylinder and is used for being connected with a to-be-tested electric linear actuator, the control module is used for controlling the to-be-tested electric linear actuator and the force loading module to move, and the measuring module is used for collecting data; the testing method comprises an electric linear actuator rigidity testing method, an electric linear actuator precision testing method and an electric linear actuator performance retentivity testing method, by means of the testing device and the testing method, the rigidity, the precision and the performance retentivity of the electric linear actuator can be detected through one-time clamping, and the testing device and the testing method have the advantages of being high in precision and real degree.

The invention relates to the technical field of semiconductor manufacturing, and discloses an integrated vacuum system test method of a mechanical arm and a vacuum test platform. A vacuum test platform which is provided with a two-stage vacuum system and a multi-channel proportional valve and is designed in a modular architecture mode is adopted for sequentially carrying out pre-installation calibration, vacuum environment simulation, positioning precision testing, vacuum adaptability testing and durability testing. The vacuum test platform is provided with a fine tuning clamping groove which is matched with the altimeter to ensure that the mounting position of the mechanical arm to be tested is accurate and the actual condition of the photoetching machine is reetched; a plurality of general standardized interfaces are also arranged, so that quick switching of to-be-tested mechanical arms of different models is realized; in the analysis stage, the three test results are analyzed, whether the performance of the mechanical arm to be tested reaches the standard or not is evaluated, the capability of integrally testing indexes such as positioning precision, vacuum adaptability and durability is achieved, external pre-debugging of the mechanical arm under the working environment of the simulated photoetching machine is achieved, and the debugging efficiency and precision are improved.

To provide a vibration unit for thin plate bending fatigue test and a thin plate bending fatigue test device that allow fine adjustment of a frequency and enable high-accuracy testing.SOLUTION: A vibration unit for thin plate bending fatigue test comprises a track-shaped drive coil 2, a magnet 3a, a magnet 3b, a drive arm 4, a specimen holder 5, a drive coil tray 6, a bearing 7, a yoke 8a and a yoke 8b. The track-shaped drive coil 2, the drive coil tray 6 as a holding part, the magnet 3a and the magnet 3b constitute the drive part. The bearing 7 constitutes a rotation part, and the drive arm 4 and the specimen holder 5 constitute the arm part. The bearing 7 comprises a pivot bearing 70 and a boss 71. One end of the bearing 7 is connected to one end of the drive arm 4 using a fastener 9c, and to the other end of the drive arm 4 the specimen holder 5 is attached with a fastener 9d. The other end of the bearing 7 is connected to the drive coil tray 6 using a fastener 9b. The track-shaped drive coil 2 is fixed to the drive coil tray 6.SELECTED DRAWING: Figure 2

The invention provides a performance test device for a high-frequency vibration absorber of a main speed reducer. The device comprises a speed reducer rack assembly, a vibration excitation joint assembly and a vibration exciter assembly, wherein the main speed reducer rack assembly is used for simulating real installation boundary conditions of vibration absorbers, and the vibration absorbers are installed on four supporting rods respectively; the shock excitation joint assembly is used for connecting the main speed reducer and the shock excitation rod and realizing multi-directional excitation; the excitation position of the vibration exciter assembly can be adjusted; the invention provides a main speed reducer high-frequency vibration absorber performance testing device which is simple in structure and convenient to operate, and multi-angle and high-precision testing of the performance of a speed reducer vibration absorber is achieved.

The invention relates to a high / low temperature wear-corrosion coupling damage test device and a quantitative evaluation method, and belongs to the technical field of wear corrosion test and material failure analysis. The device comprises a temperature-controllable corrosion test tank, a friction-wear test machine, an electrochemical workstation and a high-low temperature external circulation temperature controller, the temperature-controllable corrosion test tank is arranged on the friction-wear test machine, and friction-wear performance testing is achieved through reciprocating motion of the friction-wear test machine. And the temperature-controllable corrosion test tank is externally connected with an electrochemical workstation and a high-low temperature external circulation temperature controller and is used for testing corrosion performance and controlling temperature. According to the invention, high-precision testing and quantitative analysis of abrasion and corrosion of the metal-based material in high and low temperature environments are realized.

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

The invention relates to a laser-driven high-strain-rate micro-nano impact indentation testing method, and belongs to the field of precision testing. The method comprises the following steps: (1) determining a laser shock position on the surface of an elastomer, and laying an absorption layer at a corresponding position; (2) a transparent restraint layer is laid on the surface of the absorption layer, and an impact component composed of a pressing head, an elastic body, the absorption layer and the restraint layer is constructed; (3) adjusting the position of an impact part to be positioned on a laser focus plane, and simultaneously ensuring that a laser spot, a pressure head and a to-be-impacted area of the sample are coaxial; (4) adjusting the position of the sample to enable the distance between the sample and the tip of the pressure head to be 0-1mm; and (5) adjusting parameters of the laser device and the high-speed camera, synchronously starting the laser device and the high-speed camera, carrying out laser-driven high-strain-rate micro-nano impact indentation test, shooting indentation and ejection processes of the indenter in real time, and measuring speed characteristics. The method is realized by integrating laser shock and an elastic deformation mechanism, and has a relatively high strain rate for testing under a micro scale.

The invention relates to the technical field of sensor precision testing, in particular to a motorcycle shock absorber built-in position sensor precision testing method, which comprises the following steps: acquiring position data of a motorcycle shock absorber built-in position sensor, shock acceleration of a shock absorber and moving speed of the shock absorber under different working conditions; acquiring a three-dimensional feature vector corresponding to each working condition, performing clustering division on all the three-dimensional feature vectors, calculating a comprehensive interference feature value of each category after clustering so as to divide each category into a large interference set and a small interference set, and optimizing a covariance matrix of position data corresponding to the large interference set and the small interference set during Kalman filtering; and testing the precision of the built-in position sensor of the motorcycle shock absorber based on the error between the filtered position data and the preset standard displacement data of the linear motor. The accuracy of the precision test of the built-in position sensor of the motorcycle shock absorber can be improved.

The invention relates to the technical field of steel linings, in particular to a high-precision assembly type steel structure installation effect detection device, which comprises a hoisting component, a winding component, a cable, a balance component, an adjusting arm and a detection component, and is characterized in that one side of the hoisting component is provided with a steel lining assembly body, and the balance component comprises a conical balance block; a mounting rod is arranged on the upper side of the conical balance block, a transmission groove is formed in the upper side of the conical balance block, and the adjusting arm comprises a first adjusting rod. The detection component is hoisted to the inner side of the steel lining through the hoisting component, the winding component and the cable for detection operation, the detection precision is improved, the position of the detection component is automatically adjusted through rotation of the adjusting arm at the upper end of the balance component, the steel lining can be detected in all directions, and the detection efficiency is improved. The height of the detection position is adjusted by winding and unwinding the detection component through the winding component, the automation degree is high, and the detection efficiency is improved.

The invention relates to a rate gyroscope temperature modeling test device and a test method, and relates to the technical field of rate gyroscope test.The device comprises a high-low temperature test box, a rotary table module and a measurement and control module, the high-low temperature test box provides a-50 DEG C to 200 DEG C wide temperature environment, the rotary table module exerts an accurate rotating speed, and the measurement and control module is connected with the high-low temperature test box; the measurement and control module realizes automatic temperature control, rotating speed control and multi-parameter synchronous acquisition. A hollow rotating shaft and a titanium alloy heat insulation coupling are adopted to isolate heat conduction, and a 24-bit AD acquisition card is combined to obtain an output signal of the gyroscope. The method comprises the steps of multi-temperature-point heat preservation, positive and negative rotating speed testing and data acquisition, construction of a temperature-angular speed-output three-dimensional model, and fitting of a nonlinear compensation formula through a least square method. According to the invention, automatic high-precision testing in a wide temperature range is realized, the scale factor precision and the zero-bias stability of the gyroscope in a high-temperature environment are remarkably improved, and the method is suitable for high-temperature application scenes such as geological exploration and petroleum drilling.

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

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

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

The invention discloses a test adjusting device for a packer in the technical field of petroleum pipelines, and the test adjusting device comprises a bottom water tank, supporting columns are arranged at the tops of the two sides of the bottom water tank, the tops of the two supporting columns are fixedly connected with top supporting frames, and the ends, close to each other, of the two top supporting frames are jointly and fixedly connected with a supporting fixing ring. Liquid in the top liquid storage tank is precisely pressurized through the pressurizer, the pressure environment of the packer under the actual working condition is simulated, and high-precision testing of the performance of the packer is achieved in cooperation with the pressurization cavity pressure meter and the pipeline pressure meter. The device adopts a modular design, and all parts are connected through flanges, so that the device is convenient to disassemble and assemble. In the testing process, testing adjustment of the packer can be completed only by operating according to the preset steps, and the working efficiency is greatly improved. The device is provided with a display, can display key parameters such as pressure of a booster cavity, pressure of a pipeline, liquid level and the like in real time, and is convenient for operators to monitor and adjust the testing process.

The invention is suitable for the technical field of testing, and provides a precision testing system, and a main control device is used for controlling a first subject matter to move according to a test point set through a motion platform, and obtaining a three-dimensional test coordinate when the first subject matter moves to the test point set, and controlling the surgical robot to move according to a benchmark test coordinate obtained by converting the three-dimensional test coordinate to obtain a three-dimensional actual coordinate, and determining the system precision of the surgical robot according to an error between the three-dimensional test coordinate and the three-dimensional actual coordinate. A full-automatic process from subject matter entering / placing and subject matter moving to surgical robot precision measurement can be achieved, human errors are prevented from being introduced in precision testing, the testing efficiency is improved through full-process automatic testing, and by flexibly configuring a testing point set and improving the testing sample size, the accuracy of the surgical robot is improved. The system precision performance of the surgical robot at multiple positions in the whole working space can be tested, and the accuracy of precision testing is improved.

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

The present invention provides an SMA wire material evaluation system and method that simulates real-world application scenarios. This system utilizes a modular load-bearing structure, integrated with an environmental simulation cabin, a data acquisition module, and a control center. A dynamic constraint calculation unit analyzes wire material factory parameters and automatically sets load, temperature rise, and strain thresholds. An interlocking protection unit monitors load, temperature, and strain data in real time. When thresholds are exceeded, a load-temperature coordinated protection mechanism is triggered, simultaneously reducing the load and adjusting the heating power. A closed-loop control unit dynamically adjusts parameters based on stress relaxation characteristics and safety factor mapping tables stored in an adaptive database to ensure that the wire material's residual plastic strain is ≤0.1% and that the microstructure is free of phase transition defects during testing. This system significantly reduces testing equipment costs. Through dynamic threshold constraints and multi-parameter coordinated protection, it achieves high-precision testing while effectively avoiding damage to the wire material's performance, achieving both high efficiency and industrial practicality.

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

The utility model relates to the field of precision test probes, and discloses a precision test probe for a spherical surface, which comprises a rod sleeve and a probe rod, the top end of the rod sleeve is provided with an upper port, the bottom end of the rod sleeve is provided with a lower port, the upper port and the lower port penetrate through the rod sleeve, the bottom end of the probe rod is provided with a probe head, and the probe head is connected with the rod sleeve. And the central point and four corners of the needle head are pointed cones and form five groups of contacts. According to the precision test probe for the spherical surface, the probe rod, the probe head and the contacts are arranged, the center point and the four corners of the probe head are each of a pointed cone structure, five sets of independent contacts are formed, when the probe is in contact with the spherical metal surface, the five sets of contacts can be flexibly attached according to changes of the radian of the spherical surface, and even if the spherical surface is slightly irregular, the contact points can not be damaged. And at least three groups of contacts can be ensured to form an effective circuit path, so that the contact stability of the spherical metal product is enhanced, the slippage phenomenon possibly caused by pressure change in plane contact is avoided, and the problem of inaccuracy of test data caused by insufficient contact points is solved.

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

The utility model relates to the technical field of mobile phone screen assembly FPC reverse folding precision testing, and discloses a pressure device for mobile phone screen assembly FPC reverse folding precision testing, which comprises a bottom plate, two baffle plates are fixedly welded on the outer walls of four first springs, a top plate is fixedly welded on the outer wall of the baffle plate, a moving rod is slidably connected in the top plate, and the moving rod is fixedly welded on the bottom plate. A plurality of second springs are fixedly mounted on the outer wall of the bottom of the top plate, and triangular plates are fixedly welded to the bottoms of the second springs. An EPC board is placed between a clamping plate and a pressing plate, a movable disc is rotated to drive a threaded rod to rotate, the pressing plate is driven to move towards the clamping plate, the EPC board is clamped, a movable rod is moved downwards to drive a triangular plate to move downwards, the triangular plate can be attached to baffles, the EPC board is placed between the two baffles, the movable rod is loosened, the triangular plate is driven to move upwards, and the baffles are driven to be clamped. The effect of clamping the EPC board is achieved, and the effect of conveniently fixing the EPC board is achieved.

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

The utility model discloses a high-precision testing machine displacement measuring device, and relates to the technical field of testing machine displacement measurement. The device comprises a device base, a translation fixing block, a position adjusting fixing block and a laser range finder, the translation fixing block is fixedly installed outside the device base, the laser range finder is movably arranged outside the translation fixing block, the position adjusting fixing block is fixedly connected with the device base, and a position adjusting assembly is fixedly installed outside the position adjusting fixing block. According to the device, the translation adjusting assembly is arranged, the laser range finder can vertically and horizontally move outside the translation fixing block by rotating a second rotating switch and a first rotating switch, the laser range finder can be always horizontally perpendicular to a detected object, and the position of the detected object can be easily changed by adjusting the position; therefore, the distance meter can accurately measure the distance of each object.

The utility model relates to the technical field of machine tool precision detection devices, and discloses a polygon prism five-spindle-head rotation angle detection device, which comprises a marble platform and a servo motor, the outer side of the output end of the servo motor is sleeved with a sleeve, and the top end of the servo motor is provided with a driving assembly; the driving assembly comprises a fixing plate, and the fixing plate is fixedly connected to the top end of the servo motor. According to the utility model, the five-shaft-head speed reducer is arranged in the connecting tool fixed in the middle of the five-shaft-head flange, the servo motor is connected to the bottom end of the five-shaft-head speed reducer, and the polygon prism body is arranged at the top end of the connecting tool, so that the polygon prism can be accurately and accurately connected with the five-shaft-head flange under the instruction of a computer. The servo motor drives the five-shaft-head speed reducer to rotate by a corresponding angle, and meanwhile, the polygon prism body installed on the connecting tool also rotates by a corresponding angle, so that the accurate control of the rotation angle is realized, the measurement precision can be effectively improved, and the condition that the rotation angle of a product is out of tolerance is avoided.