Roller grinding online measurement device and method

Abstract

The present invention belongs to the technical field of roller surface processing and detection, and in particular relates to an online measurement device and method for roller grinding, comprising a drive arm and a measuring rod, the drive arm being arranged on one side of a roller grinder, a first laser sensor being arranged between two measuring rods, a rotating disk being rotatably arranged inside the measuring rod, a plurality of measuring blocks being evenly distributed around the circumference of the rotating disk, a plurality of interlaced through holes being evenly distributed inside the rotating disk, and a clearance hole being arranged in the middle of the measuring block, facing the through holes, a second laser sensor being arranged on the measuring rod, the second laser sensor being arranged coaxially with one of the through holes, and the three laser sensors being capable of sensing the vertical distance from the roller surface. Utilizing a three-point measurement system, both contact and non-contact measurement can be achieved, and both measurement methods can be used simultaneously to achieve efficient and high-precision roller grinding and detection at different stages, thereby ensuring the detection accuracy and efficiency of the roller.

Description

Technical Field

[0001] The invention belongs to the technical field of roller surface processing detection, and in particular relates to an online measuring device and method for roller grinding. Background Art

[0002] Rollers are key tools in metal rolling. Accurate roll profiles and high-quality roll surfaces are essential for ensuring the quality of rolled metal products. Currently, the online measurement methods used in roll grinders primarily utilize two-point contact measurement devices or non-contact sensors.

[0003] Two-point contact measurement has the following inherent disadvantages:

[0004] Contact detection needs to solve the problems of roller motion, wear, environmental interference and real-time performance. In practical applications, contact detection is usually difficult to apply to roller grinding detection at high speed for a long time.

[0005] There are some inherent disadvantages of using non-contact sensors for measurement:

[0006] Non-contact detection (such as laser measurement, optical measurement, etc.) is sensitive to the reflectivity, color, roughness and other characteristics of the roller surface, and is easily interfered by environmental factors. For example, dust, oil, water mist, etc. can scatter or absorb laser or light signals, reducing measurement accuracy.

[0007] Therefore, during actual grinding, it is often difficult to take into account both contact measurement and non-contact detection. The two measurement methods are often used independently, and efficient and high-precision roll grinding and detection cannot be achieved at different stages. It is difficult to ensure the detection accuracy and efficiency of the roll. Summary of the Invention

[0008] In view of the technical problems existing in the background technology, the present invention provides an online measuring device and method for roller grinding.

[0009] To achieve the above objectives, the technical solution provided by the present invention is:

[0010] A roll grinding online measuring device comprises a driving arm and a measuring rod, wherein the driving arm is arranged on one side of a roll grinder, and two measuring rods are arranged on the driving arm, and the two measuring rods can move away from and approach the roll being ground online on the roll grinder; a first laser sensor facing the roll is provided on the driving arm at a position between the two measuring rods; a through slot is provided inside the measuring rod, a rotating disk is rotatably provided in the through slot, a plurality of measuring blocks are evenly distributed on the circumference of the rotating disk, a plurality of mutually staggered through holes are evenly distributed inside the rotating disk, and an avoidance hole facing the through hole is provided in the middle of the measuring block; a pressure block is detachably provided on the measuring rod, a second laser sensor is provided in the pressure block, and the second laser sensor is coaxially arranged with one of the through holes; the three laser sensors can respectively sense the vertical distance from the surface of the roll.

[0011] Optionally, the rotating disk is a triangular prism structure, the circumference of the rotating disk has three mounting surfaces, and the measuring block is arranged on the mounting surface; there is a detection surface between two adjacent mounting surfaces, and the through hole passes through the axis of the rotating disk, one end of the through hole passes through the mounting surface, and the other end passes through the detection surface.

[0012] Optionally, the through hole includes a first through hole and a second through hole with different diameters, the inner diameter of the first through hole is larger than the inner diameter of the second through hole, the first through hole is arranged close to the detection surface, and the second through hole is arranged close to the mounting surface.

[0013] Optionally, a positioning mechanism is provided on the pressure block, and the positioning mechanism includes a cylinder and a positioning tube. A cylinder is symmetrically provided on both sides of the pressure block, and the end of the piston rod of the cylinder is detachably connected to the positioning tube. The positioning tube can pass through the avoidance hole and be cooperated in the second through hole.

[0014] Optionally, a mounting rod is extended from the end of the piston rod, the outer diameter of the mounting rod is smaller than the outer diameter of the piston rod, the mounting rod is threadedly connected to the positioning cylinder, a pressure ring is slidably provided on the mounting rod, a first spring is sleeved on the mounting rod, and one end of the first spring is set close to the pressure ring.

[0015] Optionally, an exhaust hole is provided through the piston rod and the mounting rod, and a conical first valve port and a second valve port are symmetrically provided inside the positioning cylinder. A second spring is provided inside the positioning cylinder, and a first valve ball is provided at the end of the second spring. The first valve ball is provided close to the first valve port, and the first valve ball is provided close to the mounting rod; a plurality of sliding rods are evenly distributed around the circumference of the pressure ring, and the sliding rods are slidably provided in the sliding holes of the positioning cylinder, and one end of the sliding rod is connected to a conical disk, and the conical disk is provided on the bottom side of the positioning cylinder, and a push rod is provided on the conical disk extending toward the positioning cylinder, and the push rod is provided opposite to the first valve ball, and a second valve ball is provided on the push rod, and the push rod can move toward the positioning cylinder and abut against the first valve ball to open the first valve port, and the second valve ball can approach and close the second valve port.

[0016] Optionally, receiving holes are symmetrically provided on both sides of the pressure block, the piston rod is slidably arranged in the receiving hole, and the positioning cylinder can be retracted in the receiving hole.

[0017] Optionally, the through groove is configured to be arc-shaped, a conical mounting portion is provided on the pressing block, and an arc-shaped bottom groove is provided on the bottom side of the mounting portion.

[0018] Optionally, the rotating disk is axially provided with three positioning holes, the positioning holes are arranged through the first through hole, and two limiting columns are horizontally arranged on both sides of the measuring rod, and the limiting columns can be docked with the positioning holes; a third spring is arranged inside the limiting column, and a limiting ball is arranged at the end of the third spring, the outer diameter of the limiting ball is larger than the inner diameter of the limiting hole, and the limiting ball can be fitted in the positioning hole.

[0019] A roll grinding online measurement method, the steps are as follows:

[0020] S1, high-speed grinding stage: When the roll is grinding at high speed, the two measuring rods are controlled to stay away from the roll, and three laser sensors are used to achieve non-contact detection to monitor the roll's geometric dimensions and guide the adjustment of grinding parameters;

[0021] S2, low-speed grinding stage: When the roller is grinding at low speed, the two measuring rods are controlled to approach the roller so that the measuring blocks touch the roller to achieve contact measurement. At the same time, three laser sensors are used to achieve non-contact detection.

[0022] S3, ultra-low speed grinding or stationary detection stage: The roller is stationary or rotates at an extremely low speed. The two measuring rods are controlled to be close to the roller so that the measuring blocks contact the roller to achieve contact measurement and perform comprehensive measurement.

[0023] S4, performing contact detection using different measuring blocks in steps S2 and S3.

[0024] The present invention has the following advantages and beneficial effects:

[0025] This invention designs an online roll grinding measurement device that monitors the roll grinding status in real time during the grinding process. Using a three-point measurement system, it enables both contact and non-contact measurement, avoiding the drawbacks of traditional single-use contact or non-contact measurement. By utilizing both measurement methods, efficient and high-precision roll grinding and testing are achieved at different stages, ensuring both accurate and efficient roll testing.

[0026] In this invention, by optimizing the structure of the measuring rod, the laser sensor can be installed at the position of the pressure block. The laser sensor and the measuring block are integrated and located in the same position, preventing interference between them. This allows both contact and non-contact detection to be performed in the same location. This online measurement device not only has a simple structure but also provides more efficient and rapid measurement with high measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the roll grinding online measuring device of the present invention;

[0028] Figure 2 It is a partial enlarged view of the structure of the roll grinding online measuring device of the present invention;

[0029] Figure 3 This is one of the connection structure diagrams of the measuring rod, pressure block, rotating disk and other components in the present invention;

[0030] Figure 4 This is the second diagram of the connection structure of the measuring rod, pressure block, rotating disk and other components in the present invention;

[0031] Figure 5 It is a top view of the connection structure of the measuring rod, the pressing block, the rotating disk and other components in the present invention;

[0032] Figure 6 for Figure 5 Cross-sectional view along the BB direction;

[0033] Figure 7 A cross-sectional view of the cylinder and the positioning tube in the present invention;

[0034] Figure 8 for Figure 7 A partial enlarged view of the middle part of the structure;

[0035] Figure 9 It is a structural diagram of the driving arm in the present invention;

[0036] Figure 10 It is a structural diagram of the slider and the measuring rod in the present invention;

[0037] Figure 11This is one of the structural diagrams of the briquette in the present invention;

[0038] Figure 12 This is the second structural diagram of the briquette in the present invention;

[0039] Figure 13 is a cross-sectional view of the briquette in the present invention;

[0040] Figure 14 A top view of the briquette in the present invention;

[0041] Figure 15 This is a structural diagram of the pressure ring and cone disc in the present invention;

[0042] Figure 16 It is a structural diagram of the rotating disk in the present invention;

[0043] Figure 17 It is a front view of the rotating disk of the present invention;

[0044] Figure 18 for Figure 17 Cross-sectional view along the AA direction;

[0045] Figure 19 is a cross-sectional view of the positioning cylinder in the present invention;

[0046] Figure 20 This is a structural diagram of the positioning column in the present invention.

[0047] Figure numerals: 1-base, 11-hydraulic cylinder, 2-driving arm, 21-hinge hole 1, 22-hinge hole 2, 23-slide, 24-connecting hole, 25-mounting block, 26-mounting seat, 27-first laser sensor, 28-roller, 3-first motor, 31-slider, 32-guide groove, 33-bidirectional screw, 34-slide rail, 4-measuring rod, 41-through groove, 42-axis hole, 43-first mounting hole, 44-second mounting hole, 5-pressing block, 51-mounting part, 52-third mounting hole, 521-second laser sensor, 53-bottom groove, 54-storage hole, 55-fourth mounting hole, 56-bump, 57-fifth mounting hole, 6-rotating disk, 6a-mounting surface, 6b-detection surface, 61-rotating shaft, 62-second motor, 63-mounting groove, 631-measuring block, 632-avoidance hole, 64-second through hole, 65-first through hole, 66-positioning hole, 7-cylinder, 71-cylinder seat, 72-piston, 73-piston rod, 74-mounting rod, 741-first spring, 75-exhaust hole, 8-conical disk, 81-push rod, 811-second valve ball, 82-sliding rod, 83-pressure ring, 84-first valve ball, 85-second spring, 9-positioning cylinder, 91-threaded hole, 92-center hole, 93-first valve port, 94-second valve port, 95-sliding hole, 10-limiting column, 101-screw, 102-third spring, 103-limiting ball. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0050] Example 1

[0051] like Figures 1 to 6 、 Figure 9 As shown, an online measuring device for roll grinding includes a drive arm 2 and a measuring rod 4. The drive arm 2 is mounted on one side of the roll grinder. The drive arm 2 is a curved structure with hinge holes 1 and 2, 22 defined therein. The bottom end of the drive arm 2 is hinged to the interior of the base 1 through hinge hole 1 21. A hydraulic cylinder 11 is also hinged to the interior of the base 1, with one end of the hydraulic cylinder 11 hinged to hinge hole 22 22. The extension and retraction of the hydraulic cylinder 11 controls the rotation of the drive arm 2, moving it closer to or further from the roll 28 being ground online.

[0052] like Figures 1 to 6 、 Figure 9 and Figure 10 As shown, two measuring rods 4 are mounted on the drive arm 2, and are capable of moving away from and toward a roll 28 being ground inline on the roll grinder. Specifically, the drive arm 2 is provided with a chute 23, and a plurality of connecting holes 24 are formed on either side of the drive arm 2, each of which communicates with the chute 23. A slide rail 34 is provided on each inner wall of the chute 23, each of which has a countersunk hole. When the countersunk hole of the slide rail 34 aligns with the connecting hole 24, the slide rail 34 is secured with a countersunk screw. A first motor 3 is provided at the top of the driving arm 2, and the first motor 3 is connected to the bidirectional screw rod 33 for transmission. The two ends of the bidirectional screw rod 33 are fixed on the bearing seat, and the bearing seat is fixed in the slide groove 23. The bidirectional screw rod 33 has two threads with different rotation directions. A slider 31 is provided on both sides of the bidirectional screw rod 33, and a measuring rod 4 is provided at one end of the slider 31. Guide grooves 32 are provided on both sides of the slider 31. The guide grooves 32 cooperate with the slide rails 34. The relative approach or distance movement of the two measuring rods 4 is achieved by rotating the bidirectional screw rod 33.

[0053] like Figure 1 and Figure 2As shown, a first laser sensor 27 is provided on the driving arm 2 between the two measuring rods 4, facing the roller 28. Specifically, the first laser sensor 27 is mounted via a mounting block 25 and a mounting seat 26. The mounting block 25 is connected to the driving arm 2 via screws. A conical mounting seat 26 is provided on one side of the mounting block 25. The first laser sensor 27 is mounted inside the mounting seat 26 to ensure effective protection.

[0054] like Figures 1 to 6 、 Figures 10 to 14 、 Figures 16 to 18 As shown, the measuring rod 4 has a through slot 41 formed within it. A rotating disk 6 is rotatably mounted within this slot. Several measuring blocks 631 are evenly distributed around the circumference of the rotating disk 6. Several intersecting through holes are evenly distributed within the rotating disk 6. A clearance hole 632 is positioned in the middle of each measuring block 631, directly opposite the through holes. A removable pressure block 5 is mounted on the measuring rod 4. A second laser sensor 521 is housed within this pressure block 5, coaxially positioned with one of the through holes. The three laser sensors can each sense the vertical distance from the surface of the roller 28.

[0055] This device can perform both contact and non-contact measurement. During contact measurement, the two measuring rods 4 are brought close to the roll 28 being ground online on the roll grinder, and the measuring block 631 is brought into contact with the roll 28 to achieve contact measurement. During non-contact measurement, the two measuring rods 4 are moved away from the roll 28 being ground online on the roll grinder, and the second laser sensor 521 on the measuring rods 4 and the first laser sensor 27 on the drive arm 2 are combined to achieve three-point non-contact measurement. During non-contact measurement, the second laser sensor 521 performs measurement by emitting and receiving laser light. The laser beam passes through the through-hole inside the rotating disk 6 and the avoidance hole 632 of the measuring block 631, directly sensing the surface of the roll 28 to achieve measurement.

[0056] The present invention enables real-time monitoring of the grinding status of the roller 28 during the grinding process. Utilizing a three-point measurement system, both contact and non-contact measurement are possible, avoiding the drawbacks of conventional methods employing either contact or non-contact measurement alone. By utilizing both measurement methods, efficient and high-precision grinding and testing of the roller 28 are achieved at different stages, ensuring both accurate and efficient testing of the roller 28.

[0057] In this invention, by optimizing the structure of measuring rod 4, a laser sensor can be installed at the position of pressure block 5. The second laser sensor 521 and measuring block 631 are integrated and located in the same position, preventing interference between them. This allows both contact and non-contact detection to be performed in the same location. This online measurement device not only has a simple structure but also provides more efficient and rapid measurement with high accuracy.

[0058] like Figures 1 to 6 、 Figures 10 to 14 、 Figures 16 to 18 As shown, further, the rotating disk 6 is a triangular prism structure, with rotating shafts 61 provided on both sides of the rotating disk 6, and an axial hole 42 connected to the through slot 41 provided on the measuring rod 4. The rotating disk 6 is rotatably arranged in the axial hole 42 via the rotating shaft 61. One end of the rotating shaft 61 is connected to the second motor 62 for transmission. The second motor 62 is provided on the side wall of the measuring rod 4. The second motor 62 is used to control the rotation of the rotating disk 6 to achieve the positioning measurement of different measuring blocks 631. The rotating disk 6 has three mounting surfaces 6a on its circumference, and mounting grooves 63 are provided on the mounting surfaces 6a. The measuring blocks 631 are detachably arranged in the mounting grooves 63 of the mounting surfaces 6a. A detection surface 6b is provided between two adjacent mounting surfaces 6a. A through hole passes through the axis of the rotating disk 6. One end of the through hole is provided through the mounting surface 6a, and the other end is provided through the detection surface 6b.

[0059] Furthermore, the through hole includes a first through hole 65 and a second through hole 64 with different diameters. The inner diameter of the first through hole 65 is larger than the inner diameter of the second through hole 64. The first through hole 65 is arranged close to the detection surface 6b, and the second through hole 64 is arranged close to the mounting surface 6a. Figure 6 As shown, the through-holes include a first through-hole 65 and a second through-hole 64 of different diameters, which provide the following technical effects: First, the variable-diameter through-holes can effectively block contaminants. When a measuring block 631 is set directly opposite the roller 28, the first through-holes 65 are on both sides of the measuring block 631. Even if contaminants enter the first through-hole 65, they will be blocked by the second through-hole 64 with a smaller diameter, thereby reducing contamination on the side where the second laser sensor 521 is located. Second, when compressed air is subsequently blown out, the compressed air is blown out through the second through-hole 64 and the first through-hole 65 in sequence. The variable-diameter through-holes can disperse the air, diffusing and diverting the compressed air to achieve a wider range of purge, ensuring the cleanliness of the interior of the through-holes. At the same time, the rotating disk 6 is ensured to exhaust air close to the side where the roller 28 is located, preventing contaminants from entering.

[0060] Example 2

[0061] like Figures 1 to 18As shown, in the present invention, a positioning mechanism is provided on the pressure block 5, and the positioning mechanism includes a cylinder 7 and a positioning cylinder 9. A cylinder 7 is symmetrically provided on both sides of the pressure block 5, and a piston 72 is slidingly provided in the cylinder 7. One end of the piston 72 has a piston rod 73. The end of the piston rod 73 of the cylinder 7 is detachably connected to a positioning cylinder 9. The positioning cylinder 9 can pass through the avoidance hole 632 and be arranged in the second through hole 64. The outer diameter of the positioning cylinder 9 is the same as the inner diameter of the second through hole 64, ensuring that the rotating disk 6 can be accurately positioned. Three through holes (a first through hole 65 and a second through hole 64) are provided inside the rotating disk 6, one of which is a measuring block 631 facing the roller 28 for measurement, wherein the through hole corresponding to the measuring block 631 is used for laser emission and reception of the second laser sensor 521, and the remaining two through holes are inserted into the through holes by using the cylinder 7 and the positioning cylinder 9 to realize the positioning of the rotating disk 6 (as shown in FIG. Figure 6 This structure can install multiple measuring blocks 631 at one time to achieve switching measurement, and utilize the through hole inside the rotating disk 6 to achieve measurement of the second laser sensor 521, while also achieving positioning and installation of the rotating disk 6, with a simple and ingenious structure.

[0062] Furthermore, a mounting rod 74 is provided at the distal end of the piston rod 73. The outer diameter of the mounting rod 74 is smaller than that of the piston rod 73. The mounting rod 74 is threadedly connected to the positioning cylinder 9. A pressure ring 83 is slidably provided on the mounting rod 74. A first spring 741 is sleeved on the mounting rod 74, and one end of the first spring 741 is arranged in close contact with the pressure ring 83. This arrangement allows the pressure ring 83 to press the measuring block 631 when the positioning cylinder 9 penetrates into the second through hole 64 to position the rotating disk 6. This prevents the rotating disk 6 and the measuring block 631 from vibrating or loosening due to the rotation and vibration of the roller 28 during contact measurement, thereby ensuring the stable fixation of the entire rotating disk 6 and the measuring block 631. At the same time, the presence of the first spring 741 can prevent the pressure ring 83 from excessively acting on the measuring block 631.

[0063] like Figures 1 to 19As shown, further, an exhaust hole 75 is formed through the piston rod 73 and the mounting rod 74. A threaded hole 91 is formed at one end of the positioning cylinder 9. A center hole 92 communicating with the threaded hole 91 is formed inside the positioning cylinder 9. A conical first valve port 93 and a second valve port 94 are symmetrically formed inside the positioning cylinder 9. A second spring 85 is provided inside the positioning cylinder 9. The second spring 85 is disposed in the center hole 92. A first valve ball 84 is disposed at the end of the second spring 85. The first valve ball 84 is disposed closely to the first valve port 93 and is disposed close to the mounting rod 74. The end of the mounting rod 74 is threadedly connected to the threaded hole 91. There are several sliding rods 82 evenly distributed on the circumference of the pressure ring 83. The sliding rods 82 are slidably set in the sliding hole 95 of the positioning cylinder 9. One end of the sliding rod 82 is connected to the cone disk 8. The cone disk 8 is set on the bottom side of the positioning cylinder 9. The cone disk 8 is extended toward the positioning cylinder 9 and is provided with a push rod 81. The push rod 81 is set opposite to the first valve ball 84. The second valve ball 811 is set on the push rod 81. The push rod 81 can move toward the positioning cylinder 9 and abut against the first valve ball 84 to open the first valve port 93, and the second valve ball 811 can approach and close the second valve port 94.

[0064] like Figure 6 As shown, the two cylinders 7 control the positioning cylinder 9 to be inserted into the second through hole 64 to fix the rotating disk 6. At the same time, the cone disk 8 at the end is also set in the second through hole 64, and the position of the cone disk 8 cannot exceed the staggered position of the three through holes to avoid interference with the second laser sensor 521. This structure can continue to control the extension of the cylinder 7 while fixing the rotating disk 6, and the positioning cylinder 9 moves away from the pressure ring 83, so that the push rod 81 abuts the first valve ball 84, thereby opening the first valve port 93, and the air source flows out through the first valve port 93 and the second valve port 94, reaching the first through hole 65 and the second through hole 64 and being blown out, ensuring that the inside of the rotating disk 6 is clean and dust-free, ensuring that the rotating disk 6 and its surroundings can be purged to prevent contaminants from entering, and ensuring the use environment of the second laser sensor 521. Moreover, when the cylinder 7 continues to extend, the second valve ball 811 will close the second valve port 94, always ensuring the pressure inside the cylinder 7, avoiding the contraction of the piston rod 73, and ensuring the positioning effect of the positioning cylinder 9. By controlling the telescopic stroke of the cylinder 7, intermittent purge can be achieved under the premise of positioning the rotating disk 6 through the positioning cylinder 9, thereby ensuring the working environment of the rotating disk 6 and the second laser sensor 521.

[0065] The design of this structure is based on the fact that there are usually interference factors such as dust, oil, and grinding fluid at the grinding site of the roller 28. Especially during online contact measurement, the measuring block 631 contacts the moving roller 28, so the position of the rotating disk 6 is easily contaminated, affecting the detection effect of the second laser sensor 521. Therefore, in response to this situation, a blowing structure is designed in the internal through hole of the rotating disk 6 to ensure that the through hole position remains clean during the contact measurement process, and to ensure that the measuring block 631 and the rotating disk 6 are in a clean state.

[0066] Furthermore, receiving holes 54 are symmetrically provided on both sides of the pressure block 5, and the piston rod 73 is slidably arranged in the receiving hole 54, and the positioning cylinder 9 can be retracted in the receiving hole 54. When the positioning cylinder 9 is retracted in the receiving hole 54, the rotating disk 6 can rotate to adjust the position of the measuring block 631.

[0067] Furthermore, the through slot 41 is configured to be arc-shaped, a conical mounting portion 51 is provided on the pressing block 5 , and an arc-shaped bottom slot 53 is provided on the bottom side of the mounting portion 51 for the rotating disk 6 to rotate.

[0068] In the present invention, the measuring rod 4 of the pressure block 5 is fixed in the following manner: a third mounting hole 52 is provided in the mounting portion 51, and the second laser sensor 521 is installed in the third mounting hole 52. Fifth mounting holes 57 are provided around the pressure block 5, and a second mounting hole 44 is provided on the measuring rod 4. The second mounting hole 44 and the fifth mounting hole 57 are aligned, and the pressure block 5 is fixed to the side wall of the measuring rod 4 by screwing in the screws. A protrusion 56 is provided on the bottom side of the pressure block 5, and the protrusion 56 is snapped into the through groove 41 for positioning. The receiving holes 54 are obliquely provided on both sides of the mounting portion 51, and a plurality of fourth mounting holes 55 are evenly distributed on the outside of the receiving holes 54. The cylinder 7 has a cylinder seat 71, and the cylinder seat 71 is connected to the fourth mounting hole 55 by screws to realize the installation of the cylinder 7.

[0069] Furthermore, two first mounting holes 43 are respectively provided on both sides of the measuring rod 4, and three positioning holes 66 are axially provided on the rotating disk 6. The positioning holes 66 are arranged through the first through-holes 65. Two limit posts 10 are respectively arranged horizontally on both sides of the measuring rod 4. The limit posts 10 can be docked with the positioning holes 66. One end of the limit post 10 has a screw 101, which is threadedly connected to the first mounting hole 43. A third spring 102 is provided inside the limit post 10, and a limit ball 103 is provided at the end of the third spring 102. The outer diameter of the limit ball 103 is larger than the inner diameter of the positioning hole 66. The limit ball 103 is slidably arranged in the first mounting hole 43, and the limit ball 103 can be partially fitted in the positioning hole 66. With this design, when the rotating disk 6 rotates, the positioning hole 66 on the rotating disk 6 will rotate to the position of the limit ball 103, realizing the snap-on limit and achieving precise adjustment of the rotating disk 6.

[0070] Example 3

[0071] A roll grinding online measurement method, the steps are as follows:

[0072] S1, High-Speed ​​Grinding Stage: During high-speed grinding of the roller 28, the two measuring rods 4 are controlled to move away from the roller 28 (at this time, the measuring block 631 does not contact the high-speed roller 28, preventing wear). Three laser sensors provide non-contact detection, monitoring the geometry of the roller 28 and providing feedback to guide the adjustment of grinding parameters. The roller 28 rotates at high speed, and the grinding equipment efficiently removes material from the roller 28 surface, initially achieving the required size and shape.

[0073] S2, Low-Speed ​​Grinding Stage: During the low-speed grinding of the roller 28, the two measuring rods 4 are controlled to approach the roller 28, allowing the measuring block 631 to contact the roller 28 for contact measurement, reducing contact wear. Simultaneously, three laser sensors provide non-contact detection. During this stage, the roller 28 rotates at a low speed, while the grinding equipment performs fine grinding, further improving the dimensional accuracy and surface quality of the roller 28 and ensuring high-precision requirements. Under low-speed conditions, the contact measuring block 631 performs high-precision measurements of the roller 28 surface, while simultaneously verifying the non-contact detection results online. Both assist in the grinding process, ensuring the accuracy of the measurement results.

[0074] S3, Ultra-Low-Speed ​​Grinding or Static Testing Stage: Roller 28 is stationary or rotating at a very low speed. The two measuring rods 4 are controlled to approach roller 28, causing the measuring block 631 to contact the roller 28 for comprehensive measurement. Under static conditions, contact testing achieves the highest measurement accuracy.

[0075] S4, different measuring blocks 631 are used for contact detection in steps S2 and S3. In the present invention, three measuring blocks 631 are installed on the rotating disk 6. In the low-speed grinding stage, the first measuring block 631 is used for contact measurement. In the ultra-low-speed grinding or static detection stage, the second measuring block 631 is used for contact measurement. The measuring blocks used in the two stages must ensure the original accuracy to avoid deviations in the measurement results. The third measuring block 631 is used as a spare. In the ultra-low-speed grinding or static detection stage, if the errors in the results of contact measurement and non-contact measurement are too large, it is necessary to replace the spare measuring block 631 to ensure that the errors are not caused by the wear of the measuring block 631, thereby ultimately ensuring the grinding quality and detection accuracy.

[0076] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A roll grinding online measuring device, characterized by: Consists of drive arm and measuring rod, The driving arm is arranged on one side of the roll grinder, and the two measuring rods are arranged on the driving arm, and the two measuring rods can move away from and approach the roll being ground online on the roll grinder; a first laser sensor facing the roll is arranged on the driving arm at a position between the two measuring rods; A through slot is provided inside the measuring rod, a rotating disk is rotatably provided in the through slot, a plurality of measuring blocks are evenly distributed on the circumference of the rotating disk, a plurality of interlaced through holes are evenly distributed inside the rotating disk, and a avoidance hole is provided in the middle of the measuring block and is directly opposite to the through hole; A pressure block is detachably provided on the measuring rod, and a second laser sensor is provided in the pressure block. The second laser sensor is coaxially arranged with one of the through holes. The three laser sensors can respectively sense the vertical distance from the laser sensor to the roller surface. The rotating disk is a triangular prism structure, and has three mounting surfaces on its circumference. The measuring block is arranged on the mounting surfaces. A detection surface is provided between two adjacent mounting surfaces. The through hole passes through the axis of the rotating disk, and one end of the through hole is provided through the mounting surface, and the other end is provided through the detection surface. During contact measurement, two measuring rods are brought close to the roll being ground online on the roll grinder, and the measuring block is brought into contact with the roll to achieve contact measurement. During non-contact measurement, the two measuring rods are kept away from the rolls being ground online on the roll grinder, and the second laser sensor on the measuring rods and the first laser sensor on the drive arm are combined to achieve three-point non-contact measurement. The second laser sensor achieves measurement by emitting and receiving lasers. The laser beam passes through the through-hole inside the rotating disk and the avoidance hole of the measuring block, and directly senses the roll surface to achieve measurement.

2. The roll grinding online measuring device according to claim 1, characterized in that: The through hole includes a first through hole and a second through hole with different diameters. The inner diameter of the first through hole is larger than the inner diameter of the second through hole. The first through hole is arranged close to the detection surface, and the second through hole is arranged close to the installation surface.

3. The roll grinding online measuring device according to claim 2, characterized in that: The pressure block is provided with a positioning mechanism, which includes a cylinder and a positioning tube. A cylinder is symmetrically provided on both sides of the pressure block, and the end of the piston rod of the cylinder is detachably connected to the positioning tube. The positioning tube can pass through the avoidance hole and be matched in the second through hole.

4. The roll grinding online measuring device according to claim 3, characterized in that: A mounting rod is extended from the end of the piston rod, the outer diameter of the mounting rod is smaller than the outer diameter of the piston rod, the mounting rod is threadedly connected to the positioning cylinder, a pressure ring is slidably provided on the mounting rod, a first spring is sleeved on the mounting rod, and one end of the first spring is set close to the pressure ring.

5. The roll grinding online measuring device according to claim 4, characterized in that: An exhaust hole is provided through the piston rod and the mounting rod, and a conical first valve port and a second valve port are symmetrically provided inside the positioning cylinder. A second spring is provided inside the positioning cylinder, and a first valve ball is provided at the end of the second spring. The first valve ball is provided close to the first valve port, and the first valve ball is provided close to the mounting rod; a plurality of sliding rods are evenly distributed around the circumference of the pressure ring, and the sliding rods are slidably provided in the sliding holes of the positioning cylinder, and one end of the sliding rod is connected to a conical disk, and the conical disk is provided at the bottom side of the positioning cylinder, and a push rod is provided on the conical disk extending toward the positioning cylinder, and the push rod is provided opposite to the first valve ball, and a second valve ball is provided on the push rod, and the push rod can move toward the positioning cylinder and abut against the first valve ball to open the first valve port, and the second valve ball can approach and close the second valve port.

6. The roll grinding online measuring device according to claim 4, characterized in that: Receiving holes are symmetrically provided on both sides of the pressing block, the piston rod is slidably arranged in the receiving hole, and the positioning cylinder can be retracted in the receiving hole.

7. The roll grinding online measuring device according to claim 1, characterized in that: The through slot is arranged in an arc shape, the pressing block is provided with a conical mounting portion, and an arc-shaped bottom slot is provided on the bottom side of the mounting portion.

8. The roll grinding online measuring device according to claim 1, characterized in that: The rotating disk is axially provided with three positioning holes, and the positioning holes are arranged through the first through hole. Two limit columns are horizontally arranged on both sides of the measuring rod, and the limit columns can be docked with the positioning holes; a third spring is arranged inside the limit column, and a limiting ball is arranged at the end of the third spring. The outer diameter of the limiting ball is larger than the inner diameter of the limiting hole, and the limiting ball can be fitted in the positioning hole.

9. A method for measuring using the roll grinding online measuring device according to any one of claims 1 to 8, characterized in that: Here are the steps: S1, high-speed grinding stage: When the roll is grinding at high speed, the two measuring rods are controlled to stay away from the roll, and three laser sensors are used to achieve non-contact detection to monitor the roll's geometric dimensions and guide the adjustment of grinding parameters; S2, low-speed grinding stage: When the roller is grinding at low speed, the two measuring rods are controlled to approach the roller so that the measuring blocks touch the roller to achieve contact measurement. At the same time, three laser sensors are used to achieve non-contact detection. S3, ultra-low speed grinding or stationary detection stage: The roller is stationary or rotates at an extremely low speed. The two measuring rods are controlled to be close to the roller so that the measuring blocks contact the roller to achieve contact measurement and perform comprehensive measurement. S4, performing contact detection using different measuring blocks in steps S2 and S3.

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