845results about "Mechanical diameter measurements" patented technology

There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

The invention discloses a bearing ring inner gauge fast detection machine, and aims to solve the problems that an existing fast detection machine cannot be seamlessly connected with an assembly line and cannot realize batch fast detection, the fast detection machine comprises a rack, and a conveying mechanism, a feeding mechanism, a discharging mechanism and an inner diameter detection mechanism are arranged on the rack. The conveying mechanism is connected with an external detection device, an automatic batch detection process is achieved, and the detection efficiency is improved. The inner diameter detection mechanism adopts a go / no-go gauge detection method, a drive assembly drives a go / no-go gauge assembly, whether the inner diameter is qualified or not is accurately judged in cooperation with a sensor, and a locking assembly can flexibly adjust the position of a no-go gauge part. The conveying track is provided with a through hole and a sensor for accurate feedback. The cleaning mechanism cleans the inner wall before detection, thereby ensuring the detection accuracy and protecting the go-no go gauge assembly. The limiting plate guides the go-no go gauge assembly to be inserted, and the detection stability is improved. The device is simple and visual in structure and low in cost, and can effectively meet the bearing production detection requirements.

A method for controlling header height comprising generating a signal as an object passes through a row unit; establishing a signal threshold, wherein when the signal threshold is exceeded a shelled ear event is detected; comparing the signal to the signal threshold; and emitting an alarm with the signal exceeds the signal threshold.

Disclosed is a workpiece diameter measurement method including the steps of: measuring coordinates of a point P that is on an outer circumferential surface of a cylindrical workpiece that is supported such that a rotary axis of a main spindle of a machine tool and a central axis of the cylindrical workpiece coincide with each other, the coordinates having a maximum or minimum coordinate in a first direction that is orthogonal to the rotary axis; calculating a distance D2 in the first direction between the point P and a reference point Q that is a point at which a distance D1 in the first direction from the rotary axis is known; and calculating a workpiece diameter of the cylindrical workpiece based on the distance D1 and the distance D2.

The utility model discloses a cone shaft size measuring tool which comprises a calibration gauge and a measuring gauge. One end of the calibration gauge is provided with a measuring surface, the measuring surface is provided with taper, one end of the measuring gauge is provided with a first reference surface and a second reference surface, a step is arranged between the first reference surface and the second reference surface, the step is provided with a through hole along the axial direction of the measuring gauge, and the inner side of the through hole is a working surface. The working face is provided with taper, and the measuring face is matched with the working face. The measuring tool provided by the utility model is simple in structure and principle, flexible and convenient to operate and low in cost, is a comprehensive inspection tool, and can inspect the taper of the measured cone shaft and the diameter of the measured cone shaft. The device is suitable for the measurement of the detected cone shaft with high precision requirements, is accurate in detection result and high in detection efficiency, can be used for large-scale detection, and has good popularization and application values.

The invention discloses a hole part batch go-no go gauge detection device, and relates to the linear dimension metering technology field, the go-no go gauge detection device comprises a workbench, a clamping module, a transmission module, a go-no go gauge scale block, a detection pressure limiting module and a burr removing module, the clamping module is used for workpiece positioning clamping, the transmission module is used for workpiece feeding and discharging, the detection pressure limiting module is used for detection pressure limiting, and the burr removing module is used for detection pressure limiting. A workpiece is conveyed into different modules, the go-no-go scale block is used for detecting and judging whether the aperture of a to-be-detected hole of the workpiece meets the specified dimensional tolerance requirement or not, and the detection pressure limiting module is used for ensuring that the detection pressure of the go-no-go scale block on the to-be-detected hole of the workpiece is kept consistent, so that the detection accuracy is improved; the burr removing module removes burrs in a to-be-detected hole of a workpiece before detection of the go-no-go scale block, the burrs are prevented from influencing the detection accuracy, and meanwhile, a visual sensor is arranged on the go-no-go scale block and used for directly detecting whether the hole diameter of the to-be-detected hole of the workpiece meets the standard or not and detecting whether the go-no-go scale block works normally or not.

The utility model relates to a reinforcing steel bar size detector, which comprises a detection plate, a diameter measuring plate and a length measuring plate, a front baffle plate is integrally arranged at one end of the detection plate, the diameter measuring plate is slidably connected inside the detection plate, and a sliding plate slidably connected inside the front baffle plate is arranged on the outer wall of one side of the diameter measuring plate. The front baffle is rotatably connected with a bidirectional screw rod through a bearing, the sliding plate sleeves the bidirectional screw rod in a threaded manner, and the diameter measuring plate sleeves the detection plate in a sliding manner. According to the radius measuring structure, the two sliding plates can move towards the reinforcing steel bar in the semicircular placing groove at the same time, the diameter of the reinforcing steel bar can be measured conveniently, the diameter measuring function is achieved, the elastic force of the spring of the length measuring structure can push the length measuring plate to move towards the end of the reinforcing steel bar in the semicircular placing groove, and the length of the reinforcing steel bar can be measured; therefore, the detector has the functions of measuring the diameter and the length at the same time, is multifunctional, and is more convenient to use.

The invention belongs to measuring equipment, particularly relates to the field of steel pipe diameter detection, and discloses a steel pipe diameter detection device which comprises a handle, a sleeve is provided with a measuring mechanism, and the measuring mechanism penetrates through one end of the sleeve and is in threaded connection with the outer side of a lead screw. According to the steel pipe diameter detection device, measurement can be carried out from the end portion of a steel pipe or from the side face of the steel pipe, measurement modes are diversified, a supporting cylinder and a sleeve are held to rotate a handle, a lead screw rotates to drive a sliding block, a limiting rod and a first piston to move rightwards, and two first abutting balls abut against the inner wall of the steel pipe; when the distance between the two first abutting balls reaches the maximum, the distance between the outer walls of the two first abutting balls is the inner diameter of the steel pipe, due to the fact that the distance between the initial positions of the two first abutting balls is fixed and known, the moving distance of the first abutting balls can be known by observing the first scales, and the thickness of the side wall of the steel pipe can be known by observing the second scales. Therefore, the outer diameter of the steel pipe can be calculated.

This invention discloses a novel cup rim measuring instrument, belonging to the field of measuring instrument technology. It aims to solve problems encountered when using conventional calipers to measure the rim of paper cups, such as significant influence from sample molding, substantial human error, insufficient accuracy, and the inability to avoid seam errors. The measuring instrument includes a base, a measuring cup pan, a dial, a steel bar, a calibration block, a turntable, a digital micrometer, an adjusting block, a locking structure, and an elastic reset component. High-precision measurement is achieved by using a flexible steel bar to conform to the cup rim contour, combined with the digital micrometer. A tension spring provides uniform preload, and the locking structure fixes the length of the steel bar. The mating structure between the adjusting block and the measuring head ensures accurate data. This measuring instrument offers precise and stable measurements, is easy to operate, and is suitable for various types of paper cups, especially for paper cup production quality inspection scenarios with high requirements for measurement accuracy and consistency.

The utility model belongs to the field of cement fluidity detection, and discloses a cement mortar fluidity detection device which comprises a measuring disc, and a vibration mechanism is arranged at the bottom of the measuring disc; the inner side of the outer circular ring is matched with the measuring disc, an inner circular ring is fixed to the inner side of the outer circular ring, and the bottom surface of the inner circular ring abuts against the measuring disc; the measuring mechanism comprises a movable unit and a measuring scale, the movable unit is movably installed on the outer circular ring and located above the inner circular ring, and the measuring scale is installed on the movable unit. Through the arrangement of the outer circular ring and the inner circular ring, the outer circular ring, the inner circular ring and the measuring mechanism can be integrally placed on the measuring disc in a hanging and overlapping manner, so that when the measuring disc needs to be cleaned, loaded and unloaded, the outer circular ring and the like do not interfere with the work of a worker, and the worker can better control the measuring disc.

The invention relates to the technical field of worm measurement, in particular to a worm size precision detection device which comprises a mounting plate, two assembly blocks are fixedly connected to the upper end of the mounting plate, air cylinders are fixedly connected to the ends, close to each other, of the two assembly blocks, and mounting blocks are fixedly connected to the upper ends of the two assembly blocks. The worm is placed between the two assembling blocks and arranged in the middle, then the two air cylinders are started, piston rods arranged in the two air cylinders are made to get close to the middle, the worm in the middle is gradually clamped through the clamping rods, and when the clamping rods get close gradually, the marking needles can be driven to get close gradually; the measuring value of the worm can be obtained by reading the value, marked by the marking needle, on the marking plate, and through the design, measuring and clamping of the worm are more integrated, and the detecting and clamping efficiency is improved.

The invention provides a method for determining the machining size of a copper tile on a water turbine. The method comprises the steps that firstly, a shell is placed and fixed; 2, measuring the size of the accommodating chamber: selecting a measurement group along the circumferential direction, and calculating a measured average value X; 3, the outer diameter H2 of the copper tile needing to be machined is determined, and the outer diameter H2 of the copper tile needing to be machined is calculated according to the average value X in the step 2 and the preset interference fit amount r; 4, the inner diameter H3 of the copper tile is determined, specifically, the outer cylindrical surface of the pivot is measured, and the inner diameter H3 of the copper tile needing to be machined is calculated according to the preset design gap amount s; therefore, according to the outer diameter H2 and the inner diameter H3 of the copper tile obtained in the step 3 and the step 4, the size needing to be machined of the copper tile is obtained. In this way, the actual machining size of the copper tile is determined according to the size of the shell and the size of the pivot which are matched with the copper tile. Therefore, the matching precision can be improved.

The invention provides an inspection mandrel for flexible gear ring measurement, which comprises a bottom plate, a bottom plate oil pushing path and a bottom plate oil suction path are respectively arranged in the bottom plate, and a one-way oil pushing valve and a one-way oil suction valve are respectively arranged on the bottom plate oil pushing path and the bottom plate oil suction path; a piston cylinder is further included, the piston cylinder comprises a pushing piston mounting section and an oil way forming section, a pushing piston mounting cavity and an annular oil storage cavity are formed in the pushing piston mounting section, a pushing piston is movably mounted in the pushing piston mounting cavity, and a pushing cavity is formed between the pushing piston and the pushing piston mounting cavity; the oil way opening section is provided with a piston cylinder oil suction way and a piston cylinder oil pushing way, the piston cylinder oil suction way, the annular oil storage cavity and the bottom plate oil suction way are communicated, one end of the piston cylinder oil pushing way is divided into two ways, one way is communicated with the pushing cavity, and the other way of the piston cylinder oil pushing way is provided with a pressure release valve. The other path of the piston cylinder oil pushing path is unidirectionally communicated with the annular oil storage cavity, and the piston cylinder oil pushing path is communicated with the bottom plate oil pushing path. The flexible gear ring part is tensioned through small force, and operation is rapid, easy and convenient.

The invention relates to the technical field of measurement work after tube expansion of a shell-and-tube heat exchanger, and discloses a tube hole measuring device and application, the tube hole measuring device comprises a shell, the shell is provided with a hollow cavity, at least three round holes used for placing steel balls are arranged along the peripheral wall of the shell, and the round holes are communicated with the hollow cavity of the shell; the steel balls are placed in the round holes; the center rod is arranged in the hollow cavity and moves in the axial direction of the hollow cavity, and one end of the center rod extends to the outer side of the shell; the part, located in the hollow cavity, of the center rod is a taper section. The farther the taper section is away from the center rod positioning ring, the smaller the diameter is. The expansion amount of the three steel balls is adjusted through displacement of the center rod with the taper, the measurement size is adjusted, and the diameter of the steel balls corresponding to the minimum value and the maximum value of the expansion rate is adjusted through the center rod positioning ring; the length of the expanded connection position is positioned through the shell positioning ring. When the expansion pipe hole is used, the measuring steel ball end with the minimum expansion rate can enter the expansion joint position, the measuring steel ball end with the maximum expansion rate cannot enter the expansion joint position, the expansion pipe hole is qualified, and otherwise, the expansion pipe hole is unqualified.

The utility model relates to the technical field of measuring equipment, and discloses tree diameter measuring equipment, which comprises three groups of measuring assemblies arranged in parallel and a mounting frame for mounting the three groups of measuring assemblies, the measuring assembly comprises two mark post groups which are symmetrically arranged, a bearing strip for mounting the mark post groups, and a measuring tape arranged between the two mark post groups; sliding grooves for installing the mark post sets are formed in the sides, close to the tree trunk, of the bearing strips, two first reset springs are further arranged in the sliding grooves, and the two first reset springs are connected to the sides, away from each other, of the two mark post sets respectively. The measuring tape comprises a mounting shell and a measuring scale rolled in the mounting shell, one end of the measuring scale is provided with a first inserting rod, the bottom of the mounting shell is provided with a second inserting rod, the top of the bearing strip is further provided with a through groove, and the first inserting rod and the second inserting rod penetrate through the through groove to be inserted into the two marker post sets respectively. The purpose of the utility model is to measure the diameters of multiple positions of a trunk at one time and improve the measurement efficiency.

The utility model discloses a bicycle axle outer diameter detection device which comprises a bottom plate, an adjusting rod is arranged above the bottom plate, a dial indicator is arranged at the end portion of the adjusting rod, a placing block is arranged on the bottom plate, the dial indicator is located above the placing block, and a placing groove is formed in the top of the placing block. The detection operation is convenient.

The utility model discloses a precise part excircle groove diameter detector, which relates to the technical field of workpiece processing detection, and comprises a base, a detection platform, a left probe, a right probe and a dial indicator, the detection platform is installed between a left installation block and a right installation block on the base through a supporting assembly, the left probe is installed on the left installation block through a measuring ejector rod assembly, and the right probe is installed on the right installation block through a measuring ejector rod assembly. The right measuring needle is installed on the right installation block through a gauge rod ejector rod assembly, the gauge rod ejector rod assembly comprises a gauge rod ejector rod, a gauge rod ejector rod wrench, a wrench positioning pin, a gauge rod ejector rod pin and a spring, a wrench containing groove is formed in the middle of the right installation block, and the gauge rod ejector rod slidably penetrates through the left side of the wrench containing groove in the left-right direction; the right measuring needle is fixed at the left end of the gauge rod top rod; the gauge rod ejector rod wrench is arranged in the wrench containing groove through the wrench positioning pin, and the gauge rod ejector rod pin is arranged at the right end of the gauge rod ejector rod in a penetrating mode and fixedly connected with the gauge rod ejector rod wrench. The dial indicator is fixed on the right mounting block; and the spring sleeves the measuring end of the dial indicator.

This utility model belongs to the technical field of new energy vehicle horn frame technology, and particularly relates to a dual-station dimension inspection device for new energy vehicle horn frames. It includes a body, with four evenly distributed sliding grooves on one side of the upper wall and three evenly distributed sliding grooves on the other side. Movable blocks slide within the sliding grooves, and detachable detection columns are mounted on the top surface of the movable blocks. A gantry frame is fixedly mounted on the top surface of the body, with two guide rods sliding within the upper arm of the gantry frame. A pressure plate is fixedly mounted at the lower end of the guide rods, and two uprights are fixedly mounted on the top surface of the gantry frame. A scale is provided on the front of each upright. This utility model allows for the inspection of mounting holes for horn frames of different specifications by adjusting the position of the detection columns. A spring applies downward pressure to the pressure plate, causing the bottom surface of the pressure plate to press firmly against the top surface of the horn frame. The pointer on the scale indicates the thickness of the horn frame.

The utility model relates to the technical field of check rings, in particular to a check ring quenched finished product size checking device, which comprises a base, a bayonet is arranged on the end wall of the base, a clamping seat is mounted on the inner side of the bayonet, and a screw rod is mounted at the side end of the clamping seat. The insertion vessel is clamped through the insertion groove, the insertion vessel is convenient to take and store, the vessel cavity of the insertion vessel is used for simply and temporarily storing a check ring to be detected and improving the storage performance of the body, the bottom column, the middle column and the top column are sequentially fixed and integrated, the check ring is sleeved from the top column during detection, the sizes of the bottom column, the middle column and the top column are sequentially decreased, the falling position of the check ring is convenient to observe, and the detection accuracy is improved. And the diameters of the bottom column, the middle column and the top column are the inner diameters of the check rings through which the check rings can pass, so that whether the sizes of the quenched check rings are qualified or not can be conveniently and quickly known, and the checking efficiency is improved.

The invention belongs to the technical field of detection jigs, and discloses a multifunctional detection jig and a detection method. The multifunctional detection jig comprises a base, a positioning assembly, a hole site detection assembly and a contour detection assembly. According to the multifunctional detection jig, the part is fixed at the preset position through the positioning assembly, the part does not need to be carried among different detection tools, and carrying operation is reduced. The hole site detection assembly and the contour detection assembly are integrated on the same base, multiple key features such as hole sites and contours of parts can be detected in sequence or at the same time at the same position, operation steps are reduced, the number of carrying times and the operation steps are reduced, and the detection efficiency is improved. According to the detection method, the hole site is detected firstly, and then the contour is detected after the hole site is qualified, so that the part with the out-of-tolerance hole site can be identified in the initial stage of detection, contour detection does not need to be continuously carried out at the moment, the situation that extra detection time is input into the part without assembly possibility is avoided, and the overall detection efficiency is improved.

This application discloses a testing device for gear pump shaft production, belonging to the technical field of gear pump shafts. It mainly includes a testing table, with a first clamping mechanism and a second clamping mechanism arranged opposite each other on the upper end of the testing table. The first and second clamping mechanisms are used to clamp the pump shaft to be tested. A testing mechanism is disposed on one side of the testing table, and the testing mechanism has a fixed base fixedly installed on one side of the testing table. An adjustment mechanism is provided on the upper surface of the fixed base, and a mounting plate is provided above the adjustment mechanism. The adjustment mechanism is used to adjust the position of the mounting plate. A fixing component is installed on the mounting plate, and a dial indicator is provided on one side of the fixing component. This gear pump shaft testing device significantly reduces manual intervention, prevents instability during pump shaft rotation, and also prevents instability in dial indicator readings, thus improving testing accuracy.

The utility model discloses a kind of wire diameter measuring devices based on unmanned aerial vehicle carrying, including unmanned aerial vehicle body and the measuring unit of being installed on the upper end of unmanned aerial vehicle body;The measuring unit includes the square frame connected on the upper end of the unmanned aerial vehicle body, and the square frame upper end is provided with front guide piece group and rear guide piece group;The front guide piece group and rear guide piece group all include two guide pieces that are symmetrically arranged and funnel-shaped;Square frame upper end is horizontally provided with mould needle fixing block, and a plurality of mould needles for measuring the wire diameter of the wire to be measured are arranged adjacent in parallel on the mould needle fixing block, and the longitudinal position of mould needle is adjustable;Scale line that is used in cooperation with the mould needle is provided on the side end face of the mould needle fixing block. By the present application scheme, the outer diameter value can be read by scale value, which is convenient, fast and safe.

The invention relates to the technical field of mechanical manufacturing and detection, in particular to a method for measuring geometric accuracy of a laser tracking target ball. Comprising the following steps: S1, measuring the diameter of a sphere; s2, measuring the roundness of the sphere; s3, measuring the center offset; and S4, measuring the light return angle of the cube-corner prism. According to the method, the diameter, the roundness, the center offset and the light return angle of the target ball are respectively measured through four steps, a complete geometric accuracy evaluation system is constructed, the comprehensive accuracy condition of the target ball can be comprehensively and systematically reflected, and the defect that an existing method can only reflect a single parameter or local deviation is overcome. In key center offset measurement, a target ball rotates around an optical center shaft and deflects to a plurality of limit positions for sampling, and a method of measuring for multiple times to obtain an average value is adopted, so that the accuracy and the reliability of a measurement result are greatly improved, and micro space offset between an optical center and a ball center can be accurately captured.

The present application relates to a kind of TBR tread camber measurement method, belong to tire manufacturing technical field, camber ruler is placed along the width direction of tire tread, the contact condition of camber ruler and crown, shoulder on both sides of crown is determined;If the camber ruler and the crown, the shoulder are all contacted, it indicates that tire tread camber adopts a section of arc structure, the radius of camber ruler is used as the center arc radius of the crown;If the camber ruler and the crown or the shoulder are not contacted, it indicates that tire tread camber is not adopted a section of arc structure, the center arc radius of the crown and the connecting arc radius of the shoulder are measured respectively, the present application is measured to tread camber radius by camber ruler, corresponding measurement method is formulated to different deformation forms to form unified measurement standard, for the same measurement sample, even different operators can also obtain the same value, improve measurement accuracy.

The utility model discloses a plug-in inductance coil measuring device which comprises a first measuring mechanism and a measuring moving frame installed at the top of the first measuring mechanism, a second measuring mechanism is arranged at the top of the first measuring mechanism, a detection support is arranged at the bottom of the second measuring mechanism, the first measuring mechanism comprises a measuring base, and the measuring base is connected with the measuring moving frame. A measuring support is fixedly installed on the top of the measuring base, a measuring sliding groove is formed in the periphery of the top of the measuring support, first measuring scales are arranged on the side, close to the measuring sliding groove, of the measuring support, a measuring motor is fixedly installed in the measuring support, and the output end of the measuring motor is fixedly connected with a first bevel gear. Under the action of a spring telescopic rod and a compression spring in the compression chute, the measuring block is contracted, and the compression block supports and fixes the plug-in inductance coil at the same time, so that not only can the outer diameter of the plug-in inductance coil be measured, but also the inner diameter of the plug-in inductance coil can be measured.

The utility model discloses the technical field of machining measurement device, more specifically discloses a kind of for the size measurement tool of incomplete circle, comprising: tool main body, detachably set on part;Compensation component, set on tool main body, can be synchronous with the arc to be processed Machining;Wherein, the straight line of the center of the arc to be processed of compensation component and arc to be processed can pass through arc to be processed;Measuring component is used to measure the diameter between compensation component and arc to be processed;By using the utility model, arc can be measured in real time during processing, cancel the use of radius gauge and three-dimensional coordinate instrument;Greatly reduce the difficulty of real-time measurement arc actual size in part processing process, improve the arc size measurement stability and accuracy, can effectively improve the product quality and stability of part.

The utility model discloses a molded case circuit breaker bearing support testing fixture, which comprises a base, a support frame is arranged in a groove at the inner side of the base, a bearing support positioning assembly is arranged at the inner side of the support frame, and a bearing support main body is arranged on a reference line at the middle parts of the end surfaces of the base and the support frame. By installing the bearing support positioning assembly, the positioning plate and the profiling positioning block at the two ends can be driven to be matched with the outline of the bearing support, it is ensured that the bearing support is positioned and fixed, a user only needs to rotate a rotary knob at one end to fix the bearing support in the middle, and if the bearing support cannot be completely attached to the positioning plate or the profiling positioning block, the bearing support can be fixed. Or the positioning pin cannot be inserted between the second mounting hole and the positioning hole, the bearing support may be deformed or the hole diameter is out of tolerance, a go-no go gauge is arranged at the front end of the bearing support and used for detecting the hole diameter of the bearing hole, and if the go end of the go-no go gauge can be smoothly inserted into the hole and the no-go end does not pass through the hole, the requirement is met.

The utility model relates to gearbox housing production technical field, and disclose a kind of hole position detection device for gearbox housing production, including conveying unit, it is characterized by: the surface of conveying unit is provided with detection unit.This kind of hole position detection device for gearbox housing production, without manual handling and alignment, from conveying to detection can be completed automatically, realize continuous operation, efficiency is significantly improved, adapt to batch production demand, when detecting different models shell, mould replacement operation is simple, without complex disassembly, strong adaptability, accurate in detection process Hole alignment, reduce misjudgment, conveying link has buffering protection, reduce shell knock damage risk, when detecting, component damage can also be avoided, overall can improve detection efficiency, reduce operation complexity, protect shell and component, reliable in use.

The invention relates to the technical field of wig production, in particular to a hair bundle diameter measuring device and system. The device further comprises a driving mechanism and a measuring mechanism, and the driving mechanism and the measuring mechanism are both installed on the supporting mechanism. The driving mechanism is matched with the supporting mechanism, so that the hair bundle diameter measurement convenience and accuracy are improved; through an image shooting mode, a deep learning model is adopted to realize accurate analysis of the diameter and the quality of the hair bundle; the structure is simple, the size is small, the modular structural design is adopted, and installation and maintenance are convenient; the tension sensor is adopted to ensure the same tension every time, so that the measurement accuracy of the diameter of the hair bundle is improved.

The utility model relates to a measuring tool and a measuring device, and the measuring tool is used for measuring the aperture and the hole location degree, and comprises a measuring ball which is used for extending into a to-be-measured hole of a metal piece; the mounting part is used for being connected with the surface of the metal piece in a magnetic attraction mode, and the mounting part is mounted on the measuring ball in a position-adjustable mode in the axial direction of the mounting part. When the measuring ball and the to-be-measured hole are in a tangent state, the position of the mounting part on the measuring ball is adjusted, so that the mounting part is adsorbed on the surface of the metal piece, the measuring tool is fixed on the metal piece, and the stability of the measuring tool is improved. The sphere structure of the measuring sphere is not limited by a scanning angle, so that scanning of a scanner of the measuring device is facilitated, the integrity and precision of acquired data can be improved, the scanner can conveniently acquire related data of the aperture and the hole position degree of the to-be-measured hole at the same time, and the measuring efficiency of the measuring device can be improved. The sphere structure can be suitable for to-be-measured holes of various sizes, and the adaptability and compatibility of the measuring tool are improved.