Dual projection image type roller wheel measuring mechanism

Abstract

The utility model discloses a kind of double-projection image type roller measurement mechanism, it is by a measurement platform, a moving frame and a measurement system are composed, water platform surface, seat and track are equipped on the measurement platform, to erect the roller to be measured. The moving frame is slid in track, include bottom plate, first and second rod body and cross bar, and it is surrounded to cover roller. The measurement system is configured in first and second rod body with first and second measuring instrument, and is connected in parallel in a measurement host, first and second measuring instrument is formed by transmitter and receiver, forms the partial overlap of double-side projection space and roller edge. By moving frame along track movement, cooperate measurement host to receive image and analyze, the diameter variation of roller, external size and true roundness can be measured, thereby applicable to high-precision measurement of large roller.

Description

Technical Field

[0001] This utility model relates to the field of optical measurement technology, and more particularly to an image measurement device for high-precision analysis of the external dimensions and roundness of large rollers, which mainly utilizes a dual-projection image roller measurement mechanism for non-contact measurement. Background Technology

[0002] In the manufacturing and quality control processes of large rollers, roundness and dimensional accuracy are key geometric parameters affecting product performance. However, traditional technologies still have significant limitations in such measurements. Current commonly used measurement methods, such as micrometers or calipers, rely primarily on manual point-by-point inspection to obtain local dimensional values ​​of the rollers. These tools are not only difficult to perform full-circumference measurements on the rollers, but also cannot depict overall contour changes in real time, making it difficult to effectively assess the roundness or full-dimensional contour errors along the length of the rollers. Moreover, large rollers can range in diameter from hundreds of millimeters to several meters, are heavy, and are not easily flipped. Data reconstruction after segmented measurement is highly susceptible to distortion caused by clamping errors or reference deviations.

[0003] On the other hand, while existing optical or laser scanning measurement equipment offers advantages such as non-contact and speed, most devices require manual calibration and struggle to maintain stable focus over long distances on large workpieces. Existing systems often employ single-sided projection or single-view design, making them susceptible to interference from factors such as roller wobbling, center offset, and tilted installation, resulting in inaccurate dimensional and roundness measurements. Furthermore, if the rollers undergo thermal expansion and deformation under heating conditions, existing measurement methods cannot simulate the dimensional changes under actual working conditions, further affecting the accuracy of roller factory inspection. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dual-projection image type roller measurement mechanism.

[0005] To achieve the above objectives, the technical solution provided by an embodiment of this utility model is as follows:

[0006] A dual-projection image type roller measurement mechanism includes:

[0007] A measuring platform is formed with a horizontal platform surface. Two seats are mounted on the horizontal platform surface, and a roller is mounted between the two seats. Two tracks are fixed on the horizontal platform surface, and the two tracks and the roller are arranged parallel to each other.

[0008] A movable frame includes a base plate, a first rod, a second rod, and a crossbar. The base plate is slidably disposed between two tracks, and the base plate is perpendicular to the tracks. The first rod and the second rod are both erected on the base plate, and are respectively located on both sides of a roller. The crossbar connects the first rod and the second rod, and the base plate, the first rod, the second rod, and the crossbar enclose the roller to form a rectangular area.

[0009] A measurement system includes a first measuring instrument, a second measuring instrument, and a measurement host. The first measuring instrument is fixed to a first rod, and the second measuring instrument is fixed to a second rod. Both the first and second measuring instruments include a transmitter and a receiver, and a projection space is formed between the transmitter and the receiver. The two side edges of the roller partially overlap with the two projection spaces. The measurement host is connected to and receives the images of the roller projected by the first and second measuring instruments, and moves along the track with the moving frame to measure the diameter change and external dimensions of the roller.

[0010] As a further improvement of this utility model, a fixed base is provided at one end of the measurement platform, and a driver is installed at the fixed base. The driver is connected to one end of the roller, and the driver drives the roller to rotate at a constant speed, so that the measurement system receives dual projection images and knows the roundness of the roller.

[0011] As a further improvement of this utility model, a rotary joint is installed at the other end of the measuring platform. The rotary joint is connected to one end of the roller via a pipe connector, and heating fluid is injected into the roller through the pipe connector to simulate the working temperature of the roller.

[0012] As a further improvement of this utility model, a connecting assembly is provided between the roller and the driver, and the connecting assembly includes two universal joints and a telescopic connecting rod.

[0013] As a further improvement of this utility model, both the first rod and the second rod are locked to the base plate with an adjusting seat. The adjusting seat has a plurality of elliptical holes, and the base plate has a plurality of screw holes. The adjusting seat is locked to any of the screw holes by passing a plurality of bolts through the elliptical holes, thereby adjusting the distance between the first rod and the second rod.

[0014] As a further improvement of this utility model, both the first rod and the second rod are locked with a support member at the end away from the base plate, and the crossbar is locked to the support member.

[0015] As a further improvement of this utility model, the measuring platform is equipped with a fine-tuning device above the base. The fine-tuning device includes a fixed plate and a displacement plate. The fixed plate is fixed to the base, and the displacement plate is placed on the fixed plate. Both ends of the roller are provided with a pivot seat, which is fixed to the displacement plate. Both ends of the fixed plate have a protruding block, and a translation screw is locked through the block. The end of the translation screw presses against the outside of the displacement plate. The pivot seat is adjusted to a horizontal position by fine-tuning the two translation screws. At least one strip hole is opened on both sides of the pivot seat of the displacement plate. A fixing screw passes through the strip hole and is locked to the fixed plate. When the fixing screw is locked, the displacement plate is fixed.

[0016] As a further improvement of this utility model, the displacement plate is locked with a plurality of lifting screws on its upper surface, and the ends of the lifting screws press against the fixing plate. The height position of the pivot seat is adjusted by locking the lifting screws in, and a positioning nut is screwed onto the lifting screws.

[0017] As a further improvement of this utility model, the measuring platform is fixed with a length ruler on the horizontal platform surface, and the moving frame is fixed with an indicator needle at the base plate. The indicator needle points to the length ruler to indicate the manual displacement distance of the moving frame.

[0018] As a further improvement of this utility model, the measuring platform is fixed with at least one rack on the horizontal platform surface, and the moving frame is fixed with at least one motor at the base plate. The motor meshes with the rack to drive the moving frame to form an automatic displacement.

[0019] The beneficial effects of this utility model are:

[0020] The primary objective of this invention is to establish a dual-projection image measurement technique by having the first and second measuring instruments respectively positioned on opposite sides of the roller. Each instrument emits light via a transmitter, and the receiver receives the projected image obscured by the roller's edge, enabling rapid measurement of the roller's contour, diameter, and roundness. This dual-projection mechanism significantly reduces detection errors caused by sway, deformation, or viewing angle errors, making it suitable for the precision inspection requirements of large rollers.

[0021] The second main objective of this invention is that the movable frame, composed of a base plate, a first rod, a second rod, and a crossbar, forms a rigid structure with resistance to deformation. Even when the surface of the measuring platform is uneven, the rollers are misaligned, or the track is deformed by external forces, the movable frame can still maintain the relative parallel positions of the first and second measuring instruments in space. This design ensures the relative stability of the measuring optical axes on both sides, avoids the accumulation of measurement errors due to structural defects, and maintains the consistency and symmetry of the projected space, thereby effectively improving the accuracy of dimensional and roundness measurements.

[0022] The third main objective of this invention is to provide a height-adjustable structure. Through the adjustment seat and multi-point screw hole design on the movable frame, the distance between the first and second rods can be changed. The horizontal and vertical positions of the roller can be adjusted by the locking adjustment of the translation screw and the jacking screw in the fine-tuning device. The universal joint and telescopic extension rod in the connecting assembly provide non-coaxial and flexible length engagement functions. These multiple adjustment mechanisms effectively accommodate roller styles with different diameters, lengths, and center heights, giving this invention excellent versatility and a wide range of flexible applications.

[0023] Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description and the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the present utility model.

[0026] Figure 2 This is a partially enlarged perspective view of the movable frame of this utility model.

[0027] Figure 3 This is a schematic diagram of the motion measurement action of this utility model.

[0028] Figure 4 This is a schematic diagram of the dual-projection image measurement of this utility model.

[0029] Figure 5 This is a schematic diagram of the display screen of the measuring host of this utility model.

[0030] Figure 6 This is a schematic diagram of the present invention with an added driver.

[0031] Figure 7 This is a schematic diagram of the present invention, showing how the roller position is adjusted using a fine-tuning device.

[0032] Figure 8 This is a schematic diagram of another embodiment of the present utility model.

[0033] Figure 9 This is a schematic diagram of yet another embodiment of the present utility model.

[0034] In the diagram: 10. Measuring platform; 11. Horizontal platform surface; 12. Seat; 13. Rail; 14. Fixed seat; 15. Driver; 16. Connecting assembly; 161. Universal joint; 162. Telescopic extension rod; 17. Rotary joint; 171. Pipe joint; 18. Length ruler; 19. Rack; 20. Moving frame; 20a. Square area; 21. Base plate; 211. Screw hole; 22. First rod; 23. Second rod; 24. Crossbar; 25. Adjusting seat; 251. Elliptical hole ; 252, Bolt; 26, Support; 27, Indicator; 28, Motor; 30, Measurement system; 30a, Projection space; 31, First measuring instrument; 32, Second measuring instrument; 33, Measurement host; 34, Transmitter; 35, Receiver; 40, Roller; 41, Pivot seat; 50, Fine adjustment device; 51, Fixing plate; 511, Block; 52, Displacement plate; 521, Strip hole; 53, Fixing screw; 54, Translation screw; 55, Elevation screw; 551, Positioning nut. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0036] Please see Figures 1-5 This application discloses a dual-projection image roller measurement mechanism, which includes: a measurement platform 10, a movable frame 20, and a measurement system 30. The measurement platform 10 is used to mount a roller 40 to be measured, and the measurement system 30 is moved through the movable frame 20, thereby accurately measuring the dimensions, diameter changes, and roundness of various parts of the large roller 40, which can improve the accuracy of measurement operations on new rollers.

[0037] A measurement platform 10 forms a horizontal platform surface 11, on which two seats 12 are mounted. A roller 40 is mounted between the two seats 12. Two tracks 13 are fixed to the horizontal platform surface 11. The two tracks 13 are arranged parallel to the roller 40, so that the roller 40 can be stably positioned at the measurement position. A movable frame 20 includes a base plate 21, a first rod 22, a second rod 23, and a crossbar 24. The base plate 21 is slidably mounted between the two tracks 13, and the base plate 21 is perpendicular to the tracks 13, so that the direction of movement is the same as the axis of the roller 40, which helps to perform longitudinal scanning measurement. The first rod 22 and the second rod 23 are both erected on the base plate 21, and the first rod 22 and the second rod 23 are respectively located on both sides of the roller 40. The crossbar 24 connects the first rod 22 and the second rod 23. The base plate 21, the first rod 22, the second rod 23, and the crossbar 24 surround the roller 40 to form a square frame area 20a. The square frame area 20a can serve as the structural frame of the measurement system 30, providing good structural rigidity and shock resistance to stably obtain projected images. A measurement system 30 includes a first measuring instrument 31, a second measuring instrument 32, and a measurement host 33. The first measuring instrument 31 is fixed to the first rod 22, and the second measuring instrument 32 is fixed to the second rod 23. Both the first measuring instrument 31 and the second measuring instrument 32 include a transmitter 34 and a receiver 35. A projection space 30a is formed between the transmitter 34 and the receiver 35. The two side edges of the roller 40 partially overlap with the two projection spaces 30a. The two projection spaces 30a can simultaneously scan the two sides of the roller 40 to form an optical masking imaging effect. The measurement host 33 is connected to and receives the images of the roller 40 projected by the first measuring instrument 31 and the second measuring instrument 32. It is used to analyze the distance change between the outer contour lines on both sides of the roller 40. In addition, the moving frame 20 moves along the track 13 to measure the diameter change and external dimensions of the roller 40. That is, the measurement system 30 can simultaneously acquire the left and right side images of the roller 40, and automatically achieve high-resolution imaging and precise calculation based on the manually set roller diameter, thereby effectively providing the external dimension information of the continuous cross section. It is suitable for the detection of items such as dimensional deviation, roundness, ellipticity or taper of the large roller 40, and can achieve accurate measurement of the smallest dimension unit of 0.001mm.

[0038] The movable frame 20 is a quadrilateral rigid frame structure consisting of the base plate 21, the first rod 22, the second rod 23 and the crossbar 24. The first rod 22 and the second rod 23 are respectively fixed vertically on both sides of the base plate 21, and the crossbar 24 spans across and connects the upper ends of the first rod 22 and the second rod 23 to form a closed and stable structure. The enclosed structure has high rigidity and geometric stability, which can maintain the relative parallel positioning of the first measuring instrument 31 and the second measuring instrument 32 in space, so that they are not affected by changes in the external environment. The external environment refers to, for example, when the surface of the measuring platform 10 is not completely horizontal, the roller 40 is not completely parallel to the track 13, or the track 13 is slightly bent or warped due to use or temperature changes, the first measuring instrument 31 and the second measuring instrument 32 can still produce the same tilt or positional offset. When the changes of the first measuring instrument 31 and the second measuring instrument 32 are the same, the measurement results of the two can form a complementary calculation, thereby improving the measurement accuracy of the overall external dimensions and roundness of the roller 40 and effectively eliminating the influence of external interference on the measurement results.

[0039] Both the first rod 22 and the second rod 23 are locked to the base plate 21 by an adjusting seat 25. The adjusting seat 25 has a plurality of elliptical holes 251, and the base plate 21 has a plurality of screw holes 211. The adjusting seat 25 is locked to any of the screw holes 211 by a plurality of bolts 252 passing through the elliptical holes 251, thereby adjusting the distance between the first rod 22 and the second rod 23, thereby changing the span length of the crossbar 24. This allows the different widths of the projected space 30a to be adjusted to adapt to the size changes of the roller 40, so that the measurement system 30 can cover measurement needs of different specifications. Both the first rod 22 and the second rod 23 have a support member 26 locked at their ends away from the base plate 21, and the crossbar 24 is locked to the support member 26. When the width of the projection space 30a needs to be adjusted, the locking of the support member 26 to the crossbar 24 can be easily loosened, so that the crossbar 24 does not affect the adjustment of the distance between the first rod 22 and the second rod 23. The locked crossbar 24 is used to fix the upper ends of the first rod 22 and the second rod 23, thereby providing sufficient rigidity to the moving frame 20, effectively reducing the displacement vibration of the moving frame 20, and eliminating image jitter caused by vibration of the transmitter 34 and the receiver 35. The moving frame 20 can be configured with a detachable and modular connection design, thereby allowing the crossbar 24 to be adjusted vertically, making the height of the projection space 30a variable, so as to be suitable for measuring rollers 40 of different diameters.

[0040] Please Figure 6 and Figure 7As shown, a fixed base 14 is provided at one end of the measurement platform 10, and a driver 15 is installed at the fixed base 14. The driver 15 is connected to one end of the roller 40, and the driver 15 drives the roller 40 to rotate at a constant speed. During the rotation, the outer diameter of the roller 40 passes through the projection space 30a defined by the measurement system 30 along the axial direction. During one rotation, the first measuring instrument 31 and the second measuring instrument 32 respectively emit parallel light to the receiver 35 through the transmitter 34, and the measurement host 33 receives and records the dual projection images from the receiver 35. Through the superposition analysis of the synchronous dual images, the radius change of each point on the outer periphery of the roller 40 can be accurately calculated, and its roundness deviation can be calculated accordingly. Based on this, the measurement system 30 can receive the dual projection images and know the roundness of the roller 40. A connecting assembly 16 is installed between the roller 40 and the driver 15. The connecting assembly 16 includes two universal joints 161 and a telescopic extension rod 162. The universal joints 161 can provide degree of freedom compensation in different angular directions, allowing the roller 40 and the driver 15 to be on different axes. This ensures stable transmission of rotational torque and avoids the impact of axis error on rotational stability and measurement accuracy. As a result, the measurement platform 10 and the driver 15 can be used with rollers 40 of different diameters. The telescopic extension rod 162 has an extendable or retractable structure, which can be adjusted according to the different length dimensions of the roller 40 to effectively improve the applicability of this invention.

[0041] The other end of the measurement platform 10 is equipped with a rotary joint 17, which is connected to one end of the roller 40 via a pipe connector 171. Heating fluid is injected into the roller 40 through the pipe connector 171 to simulate the working temperature of the roller 40, thus making the roller 40 exhibit a thermal state similar to the actual production environment during the measurement process. During actual production, the roller 40 maintains a high working temperature for extended periods to ensure the workpiece's ductility, resulting in thermal expansion and dimensional increase. Geometric measurements performed only at room temperature cannot reflect the actual dimensional and shape changes during operation, leading to quality control deviations for the roller 40. Therefore, the thermal simulation environment achieved by the rotary joint 17 is used to detect whether the roller 40 still meets geometric tolerances and roundness allowable ranges after heating, serving as a basis for determining whether it can be used in the production line, effectively ensuring the quality and reliability of subsequent processing.

[0042] In addition Figure 7As shown, the measurement platform 10 is equipped with a fine-tuning device 50 above the base 12. The fine-tuning device 50 includes a fixed plate 51 and a displacement plate 52. The fixed plate 51 is fixed to the base 12, and the displacement plate 52 is placed on the fixed plate 51. A pivot seat 41 is provided at both ends of the roller 40, and the pivot seat 41 is fixed to the displacement plate 52, thereby pivotally connecting the roller 40, providing its rotational support function, and corresponding to the stability and coaxiality required in the measurement process. The fixed plate 51 has a protruding body 511 at both ends, and a translation screw 54 is locked through the body 511. The end of the translation screw 54 presses against the outside of the displacement plate 52. By fine-tuning the two translation screws 54, the pivot seat 41 is adjusted to a horizontal position for lateral fine-tuning correction. This ensures that during the installation of the roller 40, the first measuring instrument 31 and the second measuring instrument 32 can be symmetrically installed on both sides of the roller 40 axis, improving the accuracy and reliability of the measurement. The displacement plate 52 has a plurality of lifting screws 55 locked on its upper surface, and the ends of the lifting screws 55 press against the fixing plate 51. By locking the lifting screws 55 in, the height position of the pivot seat 41 is adjusted, so that the central axis of the roller 40 can be slightly adjusted up and down according to the actual measurement needs, to compensate for the height deviation caused by the unevenness of the measurement platform 10, and effectively maintain the symmetry and horizontality of the support points at both ends of the roller 40. The lifting screws 55 are also screwed with a positioning nut 551 to provide a locking and anti-loosening effect after the adjustment is completed. Furthermore, the displacement plate 52 has at least one strip hole 521 on both sides of the pivot seat 41. A fixing screw 53 passes through the strip hole 521 and is locked to the fixing plate 51. When the fixing screw 53 is locked, the displacement plate 52 is fixed. After adjusting the plane position and height of the roller 40, the current position of the displacement plate 52 can be locked, and it will not slip or loosen during use, further enhancing the positioning accuracy and rotational stability of the roller 40.

[0043] Another embodiment of this utility model, please refer to... Figure 8 As shown, the measuring platform 10 has a length ruler 18 fixed on the horizontal platform surface 11, and the moving frame 20 has an indicator needle 27 fixed on the base plate 21. The indicator needle 27 points to the length ruler 18 to indicate the manual displacement distance of the moving frame 20. This allows the operator to intuitively grasp the current position and displacement distance of the moving frame 20 during manual operation, which helps to quickly perform measurements or repeat measurements on a specific section of the roller 40. Furthermore, the length ruler 18 and the indicator needle 27 together form a simple mechanical reading device, which has the advantages of durability, no power supply required, and real-time display, making it particularly suitable for testing environments with large variations in on-site conditions.

[0044] Another embodiment of this utility model, please refer to... Figure 9As shown, the measurement platform 10 has at least one rack 19 fixed on the horizontal platform surface 11, and the moving frame 20 has at least one motor 28 fixed on the base plate 21. The motor 28 meshes with the rack 19 to drive the moving frame 20 to achieve automatic displacement. The motor 28 can be connected to the measurement host 33 to form an automatic control module, accurately moving to the predetermined measurement point according to the input parameters, thereby improving measurement efficiency and positioning accuracy. Because the moving frame 20 has both manual and automatic displacement modes, in addition to performing precise automatic measurement operations, it is also convenient for on-site personnel to switch to manual mode operation during initial setup or quick checks, providing high flexibility and ease of use.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dual-projection image type roller measuring mechanism, characterized in that, include: A measuring platform is formed with a horizontal platform surface. Two seats are mounted on the horizontal platform surface, and a roller is mounted between the two seats. Two tracks are fixed on the horizontal platform surface, and the two tracks and the roller are arranged parallel to each other. A movable frame includes a base plate, a first rod, a second rod, and a crossbar. The base plate is slidably disposed between two tracks, and the base plate is perpendicular to the tracks. The first rod and the second rod are both erected on the base plate, and are respectively located on both sides of a roller. The crossbar connects the first rod and the second rod, and the base plate, the first rod, the second rod, and the crossbar enclose the roller to form a rectangular area. A measurement system includes a first measuring instrument, a second measuring instrument, and a measurement host. The first measuring instrument is fixed to a first rod, and the second measuring instrument is fixed to a second rod. Both the first and second measuring instruments include a transmitter and a receiver, and a projection space is formed between the transmitter and the receiver. The two side edges of the roller partially overlap with the two projection spaces. The measurement host is connected to and receives the images of the roller projected by the first and second measuring instruments, and moves along the track with the moving frame to measure the diameter change and external dimensions of the roller.

2. The dual projection shadowgraph roller wheel metrology mechanism of claim 1, wherein, The measurement platform has a fixed base at one end, and a driver is installed at the fixed base. The driver is connected to one end of the roller and drives the roller to rotate at a constant speed, so that the measurement system can receive dual projection images to know the roundness of the roller.

3. The dual projection shadowgraph roller wheel metrology mechanism of claim 2, wherein, The other end of the measurement platform is equipped with a rotary joint, which is connected to one end of the roller via a pipe connector. Heating fluid is injected into the roller through the pipe connector to simulate the working temperature of the roller.

4. The dual-projection image roller measuring mechanism according to claim 2, characterized in that, A connecting assembly is installed between the roller and the driver, and the connecting assembly includes two universal joints and a telescopic extension rod.

5. The dual-projection image roller measuring mechanism according to claim 1, characterized in that, Both the first rod and the second rod are locked to the base plate by an adjusting seat. The adjusting seat has a plurality of elliptical holes, and the base plate has a plurality of screw holes. The adjusting seat is locked to any of the screw holes by a plurality of bolts passing through the elliptical holes, thereby adjusting the distance between the first rod and the second rod.

6. The dual projection shadowgraph roller wheel metrology mechanism of claim 5, wherein, Both the first rod and the second rod are locked with a support member at the end away from the base plate, and the crossbar is locked to the support member.

7. The dual projection shadowgraph roller wheel metrology mechanism of claim 1, wherein, The measuring platform is equipped with a fine-tuning device above the base. The fine-tuning device includes a fixed plate and a displacement plate. The fixed plate is fixed to the base, and the displacement plate is placed on the fixed plate. Both ends of the roller are provided with a pivot seat, which is fixed to the displacement plate. Both ends of the fixed plate have a protruding block, and a translation screw is locked through the block. The end of the translation screw presses against the outside of the displacement plate. The pivot seat is adjusted to a horizontal position by fine-tuning the two translation screws. The displacement plate has at least one strip hole on both sides of the pivot seat. A fixing screw passes through the strip hole and is locked to the fixed plate. When the fixing screw is locked, the displacement plate is fixed.

8. The dual projection shadowgraph roller wheel metrology mechanism of claim 7, wherein, The displacement plate has a plurality of lifting screws locked on its upper surface, and the ends of the lifting screws press against the fixed plate. The height position of the pivot seat is adjusted by locking the lifting screws in, and a positioning nut is screwed onto the lifting screws.

9. The dual projection shadowgraph roller wheel metrology mechanism of claim 1, wherein, The measuring platform has a length ruler fixed on the horizontal platform surface, and the moving frame has an indicator needle fixed on the base plate. The indicator needle points to the length ruler to indicate the manual displacement distance of the moving frame.

10. The dual projection shadowgraph roller wheel metrology mechanism of claim 1, wherein, The measuring platform is fixed with at least one rack on the horizontal platform surface, and the moving frame is fixed with at least one motor on the base plate. The motor meshes with the rack to drive the moving frame to form an automatic displacement.

Images