66 results about "Vernier scale" patented technology

The utility model relates to the technical field of crack detection, and particularly discloses a bridge crack detection device which comprises a sleeve, a pull rod and a displacement sensor, main scale scales are arranged on the pull rod, a vernier scale which is attached to the outer side of the pull rod and extends in the axial direction is fixed to the sleeve, vernier scale scales are marked on the vernier scale, and the minimum division value of the vernier scale scales is smaller than the minimum division value of the main scale scales. In the working process of the bridge crack detection device, when an electronic element breaks down, crack data can be temporarily obtained in a scale reading mode, and monitoring interruption is avoided. In the process of monitoring the crack state based on the sensing system, crack data can be regularly obtained through scale readings, so that the precision of the sensing system is verified, a closed-loop quality control system of automatic monitoring and manual verification is formed, the accuracy of the crack data is improved, and working abnormity of the sensing system can be found in time. The bridge crack detection device is ingenious and reasonable in structure and high in practicability.

The utility model provides a height gauge, and belongs to the technical field of measuring tools. The problem that a height gauge zeroing structure is complex is solved. The height gauge comprises a base with a reference surface, a main scale which is vertical to the reference surface and is arranged upwards is fixed on the base, a vernier scale capable of sliding along the main scale is sleeved on the main scale, a convex mounting arm is arranged on the side surface of the vernier scale, and the height gauge further comprises a round-rod-shaped marking pin, the mounting arm is provided with a mounting hole which is inclined upwards relative to the reference surface, the scriber is arranged in the mounting hole in a penetrating manner and can slide along the mounting hole, the mounting arm is in threaded connection with a locking bolt which can lock the scriber on the mounting arm, and the downward end of the scriber extends out of the mounting hole and is provided with a conical tip; and the inclination angle of the mounting hole relative to the reference surface is half of the tip taper angle. The height gauge is convenient in zero setting and simple in structure.

The invention discloses a wafer back alignment method, which comprises the following steps of: converting micron-sized offset between a first alignment mark and a second alignment mark into visual scale alignment judgment by taking one of a first scale and a second scale as a main scale and the other one as a vernier scale, so that the reading precision of + / -0.1 mu m can be realized under a microscope image; compared with + / -0.5 [mu] m in the prior art, the temperature is increased by 5 times; in the chip back alignment method, an ultraviolet lithography machine (MA6 / MA8) is adopted to etch alignment marks and scales, and then an electron beam exposure machine (EBL) is adopted to etch a final optical structure, so that the optimal balance of efficiency and cost is realized while the submicron alignment precision is ensured.

The utility model relates to a hydrocyclone sand setting nozzle measuring device which comprises a main body shell and a lead screw, the lead screw is transversely and rotatably arranged in the main body shell through rotating shafts at the two ends, the lead screw is connected with a moving plate through a ball nut, and the outer edge of the moving plate is attached to the inner wall of the main body shell. The movable plate is vertically and symmetrically connected with a plurality of guide columns parallel to the lead screw, the other ends of the guide columns slidably penetrate through the main body shell and then are connected to a guide plate, and a first probe is installed on the outer side of the guide plate; a driving device and a dustproof shell are arranged on the end, away from the guide plate, of the body shell, the output end of the driving device is connected to the lead screw, and a second probe is installed on the outer side of the dustproof shell. According to the measuring device, the two probes are attached to the inner wall of the sand setting nozzle to measure the inner diameter of the sand setting nozzle in a high-precision mode, meanwhile, the sliding groove marked with vernier scales and the sliding rod are combined to further verify the measuring results of the two probes, the measuring accuracy is improved, the abrasion condition of the sand setting nozzle can be accurately and effectively evaluated, and guidance is provided for maintenance or replacement of the sand setting nozzle.

The invention discloses a method and a system for measuring the layer thickness of a multilayer hollow pipe fitting based on image recognition, and relates to the technical field of multilayer hollow pipe fitting detection, and the technical key points are as follows: firstly, enhancing boundary features through multi-band image fusion preprocessing, and offsetting dimensional deviation by combining dynamic environment compensation and residual stress correction; through multi-dimensional verification and error correction, the measurement precision reaches a preset high-precision standard and is obviously superior to that of traditional vernier caliper measurement and ultrasonic measurement; secondly, a stable chromatic aberration boundary is constructed through a color master adaptation rule, and the influence of material pores, defects and distribution uniformity is avoided; meanwhile, through the technologies of self-adaptive noise reduction, dynamic measurement density adjustment and the like, the influence of factors such as ambient light interference and boundary complexity is resisted, and the measurement reliability is ensured; in addition, the color masterbatch adaptation rule can be dynamically adjusted according to optical characteristics and forming process parameters of different materials, the method is suitable for various complex multilayer hollow pipe fittings, and a measurement scheme does not need to be redesigned for specific pipe fittings.

The utility model relates to road construction is used measuring instrument technical field discloses a kind of high delay elastic ultra-thin wearing course thickness measuring device, including empty cylinder, inner plug rod, limit disc and vernier caliper;The inner plug rod is straight rod structure with conical head formed at bottom, and movably set in the inside of empty cylinder, after the bottom of empty cylinder is closed, the bottom end surface is reserved with the inner plug rod just passing through the perforation, the limit disc of the inside of the inside of empty cylinder is formed with the movable sleeve in the lower part of inner plug rod, and the vernier caliper is formed with the upper part of middle part.Compared with prior art, the advantages are that: after guaranteeing the bottom disc of empty cylinder is placed on the high delay elastic ultra-thin wearing course laid, the inner plug rod is pressed to let its bottom insert into high delay elastic ultra-thin wearing course, until the inner plug rod just passes through high delay elastic ultra-thin wearing course, then the scale reading on empty cylinder and vernier scale reading on vernier caliper are combined, the laying thickness of high delay elastic ultra-thin wearing course can be accurately measured, and measurement operation is more convenient and efficient.

The utility model discloses a combined type gap measuring scale which comprises a first plate body and a second plate body which are respectively formed by three edges connected end to end, any acute angle edge of the first plate body is provided with scale marks, the scale marks are composed of a plurality of length scale lines, and the length scale lines are arranged on the first plate body. The numerical value represented by each length scale line is the distance from the point of the length scale line on the acute angle side to the other acute angle side, the second plate body is a right triangle, and at least one edge of the second plate body is provided with an indexing mark. According to the utility model, the first plate body and the second plate body are matched for use, so that other obstacles around cannot interfere with the caliper during measurement; the right angle can be used to determine whether to be perpendicular to the measured object. According to the utility model, the integrated characteristic of a vernier caliper is abandoned, mechanical structures such as a combined bayonet are not provided, the overall structure is simple, the manufacturing cost is low, and the measurement precision is improved.

The utility model relates to a vernier straight rod ruler measuring device for a wide-range inner hole, and belongs to the technical field of object dimension measurement. According to the technical scheme, one end of a ruler frame (1) is provided with a ruler frame cover plate (2) and a vernier scale (8), and the other end is provided with a second measuring head (9); one end of the main ruler body (5) is provided with a measuring head I (6), and the other end of the main ruler body (5) is slidably arranged in a space formed by the ruler frame (1), the ruler frame cover plate (2) and the vernier (8); a spring shaping rod (10) is arranged in the ruler frame (1), and a spring (11) is sleeved on the spring shaping rod (10); the main ruler body (5) is provided with a cavity (21), the spring shaping rod (10) and the spring (11) are both arranged in the cavity of the main ruler body (5), and the spring (11) moves through stretching and retracting of the main ruler body (5). The beneficial effects of the utility model are that the device is high in measurement precision, is wide in measurement range, can rapidly deal with the switching of measurement of different sizes, and improves the measurement work efficiency.

The utility model discloses a measuring device. The measuring device comprises an adapter and a measuring rod. The measuring base of the depth vernier caliper is in contact with the second end of the adapter, the first end of the adapter is in contact with the reference surface of the to-be-measured workpiece, the caliper body measuring end of the depth vernier caliper is in contact with one end of the measuring rod, and the other end of the measuring rod is in contact with the measured surface of the to-be-measured workpiece. Meanwhile, the positioning cylinder and the workpiece to be detected are positioned and fixed. The length of the measuring rod is equal to the distance from the first end to the second end of the adapter, so that the moving distance of the caliper body of the depth vernier caliper relative to the measuring base is equal to the moving distance of the measuring rod relative to the adapter. The auxiliary device for measuring the depth solves the problem that the depth vernier caliper cannot directly measure the depth size due to the special structure of the workpiece to be measured, avoids the situation that the depth size can be obtained only through multiple times of measurement and calculation in the related technology, and has the characteristics of few measurement steps, few measurement data, no need of calculation and high measurement precision.

The present invention belongs to the field of bearing measurement, and in particular relates to a bearing groove size measuring tool and a measuring tool. The bearing groove size measuring tool comprises a guide sleeve and a measuring mechanism mounted on the guide sleeve, the guide sleeve being used to be fixedly connected to one of the jaws of a vernier caliper, a measuring cylinder being provided at one end of the measuring mechanism, the measuring cylinder being a C-shaped structure that can be detached along its axial direction, the outside of the measuring cylinder being marked with a scale, the inner hole of the measuring cylinder being used to place a steel ball and being a tapered hole that gradually shrinks away from the guide sleeve, a tightening body for pushing the steel ball being slidably mounted on the measuring cylinder along its axial direction, one end of the tightening body being inserted from the opening of the C-shaped structure and being provided with a reading structure that matches the reading of the measuring cylinder scale. This avoids the problem of low measurement efficiency caused by multiple trial clamping due to inappropriate steel ball size during direct ball clamping measurement, as well as the lack of limit fixation of the steel ball and the difficulty in clamping and controlling it so that it falls, thereby facilitating the measurement of bearings of different specifications and improving measurement flexibility.

The utility model discloses a measuring tool for detecting positions of multiple holes in a cylindrical surface, which comprises a fixed base, a rotatable fillet measuring assembly and a fixedly arranged height measuring assembly are arranged on the fixed base, and a detected piece is fixedly arranged on the fillet measuring assembly. The angle difference and the height difference between a hole in the cylinder and a certain hole can be obtained by rotating the fillet measuring assembly to drive the measured piece to rotate together. According to the measuring tool for detecting the positions of the holes in the cylindrical surface, the principle of equal angles in the same sector and the principle that a vernier caliper measures the movement of a measured piece are ingeniously utilized, and the change of angle dimensions is reflected on the circular angle scale turntable; compared with conventional hole position measurement such as three-coordinate measurement, the method is more economical, convenient and rapid.

This utility model relates to a boring template device for measuring the thread of oil casing pipes. The technical solution includes a main scale and a vernier scale. The main scale has upper and lower measuring jaws on its upper and lower ends, respectively. The upper edge of the main scale body has a lower inner diameter limit scale and an upper inner diameter limit scale. A vernier scale is fitted onto the main scale body. The left end of the vernier scale body has upper and lower measuring jaws, and the left end faces of the upper and lower measuring jaws are not on the same vertical line. The horizontal difference between the two is the boring limit difference. The beneficial effect is that by moving the position of the vernier scale body, it is possible to quickly determine in batches whether the bore opening of the corresponding product is too small or too large. Since the left end faces are not on the same vertical line, the difference is fixed, making it suitable for measuring the inner diameter of bores of various products with consistent boring tolerances, significantly improving measurement efficiency.

The application discloses a vernier caliper reading recognition method for intelligent supervision and related equipment, and the method comprises the following steps: acquiring the image of the vernier caliper reading by using a camera, the camera is adjusted according to a preset rule in advance, and the vernier scale of the vernier caliper is equally divided according to a preset specification; determining whether the vernier caliper in the image is a digital caliper or a scale caliper by using a trained target detection model; if the vernier caliper is determined as a digital caliper, performing character recognition on the image to obtain the target reading of the vernier caliper; if the vernier caliper is determined as a scale caliper, acquiring the main scale reading and the vernier scale reading of the vernier caliper based on the image, and determining the target reading of the vernier caliper based on the main scale reading and the vernier scale reading. The application can automatically read the reading of the vernier caliper, and the reading can be displayed in smart glasses, thereby improving the electronic degree of the supervision of the power equipment.

The utility model relates to a flatness detection die. The flatness detection die comprises a base part, a fixing part, a detection part, a horizontal adjusting part and a first height adjusting part. The Z-shaped part mold has the advantages that the detection part is connected with the horizontal adjustment part through the first height adjustment part, so that the height from the detection groove to the base part can be adjusted through the first height adjustment part, the Z-shaped part mold can adapt to different types of Z-shaped parts, and the applicability of the whole mold is improved; besides, the detection die is simple in structure, convenient to operate and low in cost, and compared with a mode that workers need to use precise measuring tools such as vernier calipers and micrometers for detection, the detection time can be greatly shortened, the detection efficiency can be improved, the labor intensity can be reduced, and the production efficiency can be improved. Compared with CCD visual detection, the method can be suitable for producing wired parts, the detection cost is reduced, and the detection range is widened.

The utility model relates to a Young modulus experimental instrument for a metal wire, which comprises a base, a bracket, a steel wire rope upper chuck, a steel wire rope lower chuck, a tension part, a tension sensor, a displacement connecting part, an optical lever placing platform, a three-foot tip seat, a laser emitting part, a vernier caliper support frame and a vernier caliper, the laser emitting part is installed on the three-foot tip seat, the measuring block on the displacement connecting part penetrates through the optical lever placing platform and is connected with the optical lever placing platform in a sliding mode, and a laser beam of the laser emitting part can vertically and downwards directly irradiate a vernier of the vernier caliper. According to the Young modulus experiment instrument for the metal wire, the displacement variation of a laser projection point of the laser emitting part is read through the vernier caliper, the measurement precision is high when the Young modulus experiment instrument is used, a telescope and a reflecting mirror are not used, only the three-foot tip seat and the vernier caliper need to be adjusted, the workload of adjustment preparation before an experiment is reduced, and the experiment efficiency is improved.

The utility model discloses a mechanical large-diameter thread outer diameter measuring device, which comprises a bottom plate, and two positioning sliding rods and two measuring sliding rods which are arranged on the bottom plate, and the two positioning sliding rods can move relatively along the upper surface of the bottom plate, so that the two positioning sliding rods are close to each other to radially clamp a boss of a workpiece to be measured. The two measuring sliding rods can move relatively along the upper surface of the bottom plate, so that the two measuring sliding rods are close to each other and respectively cling to two sides of a thread of a to-be-measured workpiece, scale marking lines are arranged on the upper surface of the bottom plate, and the lower ends of the measuring sliding rods are aligned with the scale marking lines. The length limit of an outer measuring claw of a vernier caliper is broken through, the large-diameter thread diameter measuring device is suitable for measuring the outer diameter of a large-diameter thread, the measurable thread diameter range is wide, the large-diameter thread diameter measuring device is particularly suitable for batch detection of a production line, personal errors are reduced through a positioning sliding rod and scale marks, the measuring precision and stability are improved, only three steps of fixing, pulling and reading are needed during operation, the single-time measuring time is short, and the efficiency is improved. The operation process is simplified, and stable fixation, automatic adaptation and rapid reading are achieved.

The utility model belongs to the technical field of metering equipment, and particularly relates to an automatic quantitative metal measuring vessel which comprises a measuring vessel body, a metering neck arranged on the measuring vessel body, a reading vernier scale, a siphon, a liquid storage tank and a siphon pump, and the reading vernier scale, the siphon, the liquid storage tank and the siphon pump are arranged on one side of the metering neck. The liquid outlet is lower than the liquid inlet; the liquid outlet is connected with the siphon pump, one end of the siphon pipe extends into the metering neck in the gravity direction and is located on the same horizontal plane with the scale value calibrated by the vernier of the reading vernier scale, the other end of the siphon pipe is connected with the liquid inlet, and siphonage is generated through the siphon pump, so that the liquid level in the metering neck is lowered to the scale of the calibrated volume. The process of manual reading through naked eyes is avoided, the metering accuracy of the metal meter is improved, liquid pre-stored in the liquid storage tank can avoid dry pumping of the siphon pump, and the effects of protecting the siphon pump and prolonging the service life of the siphon pump are achieved.

Disclosed is an electronic scale ruler, having a scale ruler main body, a main control board, an input, a display screen, a light source, a vernier base, and a distance conversion assembly. The scale ruler main body has an outer edge side. The light source is mounted on the outer edge side of the scale ruler main body, having a plurality of light beads and being capable of displaying scale. The vernier base is removably mounted on the outer edge side of the scale ruler main body, being capable of moving along a length direction of the outer edge side of the scale ruler main body. The distance conversion assembly is configured to calculate a movement of the vernier base from an origin on the outer edge side of the scale ruler main body.

The present application discloses a float caliper for measuring the M value of a spline, which comprises a main scale, a vernier scale matched with the main scale, a fixed jaw on the main scale, a movable jaw on the float scale matched with the fixed jaw, and a ball measuring rod matched with the spline and detachably mounted on the fixed jaw and the movable jaw. The float caliper further comprises an M value standard block with a standard M value of the spline to be measured. The main scale comprises a main body and a movable adjustable main scale mounted in the main body. The fixed jaw is integrally formed with the main body. The vernier scale is movable on the main body and matched with the adjustable main scale for measurement. The M value standard block is radially positioned by the ball measuring rod. The present application has higher precision and reliability, larger adjustable stroke, similar measurement operation to the common float caliper, lower requirement for the operator, higher universality and practicality, and improved measurement reliability of the M value of the taper spline. The present application further provides a method for measuring the M value of the spline.

This invention relates to an apparatus and method for elevation measurement in confined spaces during the installation of precast columns. A PTFE (polytetrafluoroethylene) plate component is placed on the top surface of the lower column section to adjust the elevation and flatness of the reference surface. A vernier caliper is used to check the thickness of the PTFE plate component and measure the required height of the shim. A reflective marker is attached to the upper column section to mark the elevation measurement target. A tripod is used to mount a measuring robot. The measuring robot is placed on a stable location outside the foundation pit to measure the column elevation. This invention solves the problem of elevation measurement when space is limited during the installation of the upper section of a precast column, making leveling impossible. By innovating traditional leveling methods and adding a new device, it completes the elevation measurement task in confined spaces during the installation of precast columns, offering advantages such as high operability, high measurement accuracy, fast and efficient operation, effective protection of worker safety, and improved construction progress.

The utility model discloses a combined vernier angle measuring structure which comprises a first structural body and a second structural body. The first structural body comprises at least three edges which are connected end to end, the second structural body comprises at least two edges which are connected end to end, the first structural body is provided with a first arc edge, the second structural body is provided with a second arc edge, the first arc edge and the second arc edge have the same radian, one of the first arc edge and the second arc edge is a convex arc, and the other one is a concave arc. The first structural body at least has a concave angle formed by a first arc edge and an adjacent edge thereof; the surface of the first arc edge is provided with angle scale marks or angle vernier scale marks, and the surface of the second arc edge is provided with angle vernier scale marks or angle scale marks used in cooperation with the first arc edge. The protractor has the advantages that the principle of an angle vernier caliper is adopted, the first structural body and the second structural body are used in cooperation, and compared with an existing protractor, the protractor can effectively improve the angle measurement precision.

The utility model provides an on-line external diameter measuring device. The on-line outer diameter measuring device comprises an operation table, an installation rail is installed on the top of the operation table, and a limiting block is installed on the side face of the installation rail. According to the utility model, the two groups of first measuring brackets are arranged on the mounting rail, the second measuring bracket is arranged at the left side of the group of first measuring brackets at the right side, and the second measuring bracket is arranged at the top of the guide rail at the top of the mounting rail and can move along the guide rail; during measurement, a to-be-measured workpiece only needs to be placed between the first measurement support and the second measurement support which are arranged on the right side, and at the moment, the measurement pen and the first measurement support which is arranged on the left side move relatively, so that the to-be-measured workpiece is driven to move along the through hole formed in the first measurement support and the second measurement support which are arranged on the right side. Compared with a measurement mode of a manual vernier caliper, the external diameter measuring pen is very convenient to use.

The utility model discloses a measuring device which comprises a rack, a first range finder and a second range finder, and the rack is used for bearing a roll core to be measured; the first range finder is connected with the rack, and the first range finder is used for measuring the distance L1 between the first point to be measured and the first range finder; the second range finder is connected with the rack and used for measuring the distance L2 between the second point to be measured and the second range finder. Compared with the prior art, through the first range finder and the second range finder, the diameter of the roll core can be measured under the condition that the roll core is not contacted, errors caused by manual measurement by using a vernier caliper are eliminated, the data accuracy is high, the diameter data of the roll core can be accurately obtained, the response is quick, the use is convenient, the operation is easy, and the maintenance is simple.

The present application relates to the field of precision visual measurement and alignment technology, and particularly relates to an electronic vernier caliper alignment method based on a pixel of a surface array detector, comprising the following steps: S1, designing a mark plate according to the optical field of view and the pixel size of the surface array detector; S2, collecting an image and positioning a coarse alignment mark through a geometric alignment method to obtain a reference grid position; S3, performing a gray scale processing on a grid area to generate a gray scale distribution; S4, performing a definition analysis based on the gray scale distribution to determine a target grid position; S5, comparing the position difference between the target grid and the reference grid to calculate row and column offsets; and S6, performing a statistics on a plurality of offset results to obtain an overall offset amount. The present application constructs a vernier caliper alignment mechanism based on the period difference between the pixel of the surface array detector and the mark grid, and realizes a fast alignment effect with high precision, low computing power, low cost and strong adaptability without the need of complex calculation and a multi-point structure.

The present invention relates to the field of vernier calipers and discloses an Internet of Things vernier caliper, comprising a ruler body, a vernier scale, a digital display module, a first outer measuring jaw, and a second outer measuring jaw. The vernier scale is slidably mounted on the ruler body, the first outer measuring jaw is mounted on the ruler body, the second outer measuring jaw is mounted on the vernier scale, and the digital display module is mounted on the vernier scale. The digital display module displays and records measured values ​​and further comprises a horizontal adjustment unit fixedly mounted on the first outer measuring jaw. The Internet of Things vernier caliper is provided with the horizontal adjustment unit. When it is necessary to measure the length of an object with a sharp end such as a needle or a nail, the object to be measured is manually placed on the horizontal adjustment unit. The horizontal adjustment unit adjusts the object to be measured into a horizontal state, thereby avoiding the situation where the vernier caliper is not firmly clamped on the object due to a small contact area between the sharp end of the object and the vernier caliper, resulting in the object tilting, thereby affecting the accuracy of the vernier caliper measurement.

The invention discloses a birefringence and polarization beam splitting ratio measurement system and method based on crystal rotation, and relates to the technical field of optical characteristic measurement, and the system comprises a birefringence measurement module, a polarization beam splitting ratio measurement module and a data processing module. The birefringence measurement module comprises a sodium lamp, a collimator tube, a crystal rotation objective table, a first birefringence crystal, a first rotatable polarizing film and a spectrometer telescope which are arranged along a first light path. The polarization beam splitting ratio measuring module comprises a laser, a second birefringent crystal and a second rotatable polaroid which are arranged along a second light path, and the output end of the polarization beam splitting ratio measuring module is connected with a light screen with a scale and a photoelectric sensor in parallel. And the data processing module is respectively connected with the angle encoder, the double-vernier dial and the oscilloscope. The birefringence and polarization beam splitting ratio measuring device can realize synchronous and accurate measurement of birefringence and polarization beam splitting ratio parameters, and has the advantages of reducing measurement cost, improving data consistency, and being compact in structure and convenient to operate.

This invention belongs to the field of mechanical assembly, specifically relating to a visual sealing component compression ratio measurement device and method. The device includes fastening bolts, an upper assembly flange, a sealing component, a lower assembly flange, fastening nuts, and a standard color matching tape. The upper and lower assembly flanges are connected and fixed by fastening bolts and nuts. The sealing component is installed on the platform of the lower assembly flange. The fastening bolts and nuts are adjusted to compress the sealing component. After tightening, the color of the sealing component is observed and compared with the standard color matching tape to confirm the compression ratio of the sealing component. This invention simplifies the flange tightening process, avoids the use of measuring instruments such as vernier calipers, depth gauges, and feeler gauges, and has lower personnel qualification requirements, effectively improving the efficiency and quality of flange tightening work.