Roller grinding on-line measuring device and method

Abstract

The invention belongs to the technical field of roller surface machining detection, and particularly relates to a roller grinding online measuring device and method.The roller grinding online measuring device comprises a driving arm and measuring rods, the driving arm is arranged on one side of a roller grinding machine, and a first laser sensor is arranged between the two measuring rods; a rotating disc is rotatably arranged in the measuring rod, a plurality of measuring blocks are uniformly distributed on the circumference of the rotating disc, a plurality of staggered through holes are uniformly distributed in the rotating disc, and avoiding holes directly facing the through holes are formed in the middles of the measuring blocks; the measuring rod is provided with a second laser sensor, and the second laser sensor and one of the through holes are coaxially arranged. And the three laser sensors can respectively sense the vertical distances from the three laser sensors to the surface of the roller. By means of the three-point type measuring system, contact type measurement and non-contact type measurement can be achieved, the two measurement modes are used at the same time, efficient and high-precision roller grinding and detection are achieved at different stages, and the detection precision and the detection efficiency of a roller are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of roll surface processing detection, and particularly relates to an on-line measuring device and method for roll grinding. Background Art

[0002] Rolls are key tools for metal rolling forming. The accuracy of the roll profile and the high-quality roll surface are the basic requirements for ensuring the forming process of metal rolling products. At present, the on-line measurement methods adopted by roll grinders are mainly two-point contact measurement devices or non-contact sensors for measurement.

[0003] The two-point contact measurement has the following inherent disadvantages: Contact detection needs to solve problems such as roll movement, wear, environmental interference and real-time performance. In practical applications, contact detection is usually difficult to be applied to roll high-speed movement grinding detection for a long time.

[0004] The measurement using non-contact sensors has the following inherent disadvantages: Non-contact detection (such as laser measurement, optical measurement, etc.) is sensitive to the reflectivity, color, roughness and other characteristics of the roll surface, and is easily affected by environmental factors. For example, dust, oil stain, water mist, etc. will scatter or absorb laser or optical signals, reducing the measurement accuracy.

[0005] Therefore, in actual grinding, it is often difficult to balance contact measurement and non-contact detection. The two measurement methods are often used independently, and it is impossible to achieve efficient and high-precision roll grinding and detection at different stages, and it is difficult to ensure the detection accuracy and detection efficiency of the roll. Summary of the Invention

[0006] Aiming at the technical problems existing in the background art, the invention provides an on-line measuring device and method for roll grinding.

[0007] To achieve the above object, the technical solution provided by the invention is as follows: An on-line measuring device for roll grinding, comprising a driving arm and a measuring rod. The driving arm is arranged on one side of a roll grinder, and the two measuring rods are arranged on the driving arm, and the two measuring rods can move away from and close to the roll being ground on-line on the roll grinder; a first laser sensor facing the roll is arranged on the driving arm at the middle position between the two measuring rods; a through groove is formed inside the measuring rod, a rotating disk is rotatably arranged in the through groove, a plurality of measuring blocks are circumferentially and uniformly arranged on the rotating disk, a plurality of mutually intersecting through holes are uniformly arranged inside the rotating disk, and an avoidance hole facing the through hole is arranged in the middle of the measuring block; a pressing block is detachably arranged on the measuring rod, a second laser sensor is arranged inside the pressing 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 them to the surface of the roll.

[0008] Optionally, the rotating disk is of a triangular prism structure, the rotating disk has three mounting surfaces on the circumference, and the measuring blocks are 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, one end of the through hole penetrates through the mounting surface, and the other end penetrates through the detection surface.

[0009] Optionally, the through hole comprises a first through hole and a second through hole with different diameters, the inner diameter of the first through hole is larger than that 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.

[0010] Optionally, a positioning mechanism is arranged on the pressing block, the positioning mechanism comprises a cylinder and a positioning cylinder, a cylinder is symmetrically arranged on both sides of the pressing block, the end of the piston rod of the cylinder is detachably connected with the positioning cylinder, and the positioning cylinder can pass through the avoidance hole and be arranged in the second through hole in a matching manner.

[0011] Optionally, an installation rod is extended at the end of the piston rod, the outer diameter of the installation rod is smaller than that of the piston rod, the installation rod is threadedly connected with the positioning cylinder, a pressing ring is slidably arranged on the installation rod, and a first spring is sleeved on the installation rod, and one end of the first spring is closely attached to the pressing ring.

[0012] Optionally, the piston rod and the mounting rod are provided with exhaust holes through-through, the positioning cylinder is symmetrically provided with a first conical valve port and a second conical valve port, the positioning cylinder is provided with a second spring, the end of the second spring is provided with a first valve ball, 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 on the circumference of the pressure ring, the sliding rods are slidably provided in the sliding holes of the positioning cylinder, one end of the sliding rods is connected to a conical disk, the conical disk is provided on the bottom side of the positioning cylinder, a push rod is provided on the conical disk extending toward the positioning cylinder, the push rod is provided opposite to the first valve ball, a second valve ball is provided on the push rod, 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.

[0013] Optionally, 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.

[0014] Optionally, the through groove is arranged in an arc shape, a conical mounting portion is arranged on the pressing block, and an arc-shaped bottom groove is formed on the bottom side of the mounting portion.

[0015] Optionally, the rotating disk is axially provided with three positioning holes, the positioning holes are arranged through the first through hole, and two limit columns are horizontally arranged on both sides of the measuring rod, and the limit columns can be connected 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 cooperated and arranged in the positioning hole.

[0016] A roll grinding online measurement method, the steps are as follows: S1, high-speed grinding stage: when the roller is grinding at high speed, the two measuring rods are controlled to be away from the roller, and three laser sensors are used to achieve non-contact detection to monitor the geometric dimensions of the roller and guide the adjustment of grinding parameters; S2, low-speed grinding stage: When the roller is grinding at a low speed, the two measuring rods are controlled to be close to the roller so that the measuring block contacts the roller to realize contact measurement. At the same time, three laser sensors are used to realize non-contact detection; S3, ultra-low-speed grinding or stationary detection stage: the roller is stationary or rotates at an extremely low speed, and the two measuring rods are controlled to be close to the roller, so that the measuring block contacts the roller to achieve contact measurement and conduct comprehensive measurement; S4, using different measuring blocks to perform contact detection in steps S2 and S3.

[0017] The present invention has the following advantages and beneficial effects: In the present invention, an on-line measuring device for roll grinding is designed to detect the roll grinding state in real time during the roll grinding process. By using a three-point measuring system, contact measurement and non-contact measurement can be realized, avoiding the drawbacks brought by the traditional single use of contact measurement or non-contact measurement. The two measurement methods are used in combination to achieve efficient and high-precision roll grinding and detection at different stages, ensuring the detection accuracy and detection efficiency of the roll.

[0018] In the present invention, by optimizing the structure of the measuring rod, the laser sensor can be installed at the position of the pressing block. The laser sensor and the measuring block are integrally designed and located at the same position without interfering with each other, and contact detection and non-contact detection can be realized at the same position. Such an on-line measuring device not only has a simple structure, but also is more efficient and fast in measurement and has high measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of the on-line measuring device for roll grinding in the present invention; Figure 2 is the partial enlarged view of part of the structure of the on-line measuring device for roll grinding in the present invention; Figure 3 is one of the connection structure diagrams of components such as the measuring rod, the pressing block, and the rotating disk in the present invention; Figure 4 is another connection structure diagram of components such as the measuring rod, the pressing block, and the rotating disk in the present invention; Figure 5 is the top view of the connection structure of components such as the measuring rod, the pressing block, and the rotating disk in the present invention; Figure 6 is Figure 5 the cross-sectional view along the B-B direction in Figure 7 is the cross-sectional view of the air cylinder and the positioning cylinder in the present invention; Figure 8 is Figure 7 the partial enlarged view of part of the structure in Figure 9 is the structure diagram of the driving arm in the present invention; Figure 10 is the structure diagram of the slider and the measuring rod in the present invention; Figure 11 is one of the structure diagrams of the pressing block in the present invention; Figure 12 is another structure diagram of the pressing block in the present invention; Figure 13 is the cross-sectional view of the pressing block in the present invention; Figure 14 is the top view of the pressing block in the present invention; Figure 15Structural diagram of the medium-pressure ring and conical disk in the present invention; Figure 16 Structural diagram of the rotating disk in the present invention; Figure 17 Front view of the rotating disk in the present invention; Figure 18 is Figure 17 Cross-sectional view along the A-A direction in; Figure 19 Cross-sectional view of the positioning cylinder in the present invention; Figure 20 Structural diagram of the positioning column in the present invention.

[0020] Reference numerals: 1 - base, 11 - hydraulic cylinder, 2 - driving arm, 21 - hinge hole 1, 22 - hinge hole 2, 23 - chute, 24 - connection hole, 25 - mounting block, 26 - mounting seat, 27 - first laser sensor, 28 - roll, 3 - first motor, 31 - slider, 32 - guide groove, 33 - bidirectional lead screw, 34 - slide rail, 4 - measuring rod, 41 - through groove, 42 - shaft 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 - receiving hole, 55 - fourth mounting hole, 56 - convex block, 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 - slide rod, 83 - medium-pressure ring, 84 - first valve ball, 85 - second spring, 9 - positioning cylinder, 91 - threaded hole, 92 - central hole, 93 - first valve port, 94 - second valve port, 95 - slide hole, 10 - limiting column, 101 - screw rod, 102 - third spring, 103 - limiting ball. Detailed implementation manners

[0021] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0022] Accordingly, 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 claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0023] Embodiment 1 As Figures 1 - 6 、 Figure 9 shown, an on-line measuring device for roll grinding includes a driving arm 2 and a measuring rod 4. The driving arm 2 is arranged on one side of a roll grinder. The driving arm 2 is of a bent structure, on which a first hinge hole 21 and a second hinge hole 22 are provided. The bottom end of the driving arm 2 is hinged inside a base 1 through the first hinge hole 21, and a hydraulic cylinder 11 is also hinged inside the base 1. One end of the hydraulic cylinder 11 is hinged in the second hinge hole 22. By the telescopic movement of the hydraulic cylinder 11, the rotation of the driving arm 2 is controlled to approach or move away from the roll 28 being ground on-line.

[0024] As Figures 1 - 6 、 Figure 9 and Figure 10 shown, two measuring rods 4 are arranged on the driving arm 2, and the two measuring rods 4 can move away from and approach the roll 28 being ground on-line on the roll grinder. Specifically, a sliding groove 23 is provided on the driving arm 2, and a number of connecting holes 24 communicating with the sliding groove 23 are respectively provided on both sides of the driving arm 2. A slide rail 34 is respectively arranged on the inner walls of both sides of the sliding groove 23, and a countersunk hole is provided on the slide rail 34. When the countersunk hole of the slide rail 34 is aligned with the connecting hole 24, it is fixed by a countersunk screw. A first motor 3 is arranged at the top end of the driving arm 2. The first motor 3 is connected and driven with a bidirectional lead screw 33. Both ends of the bidirectional lead screw 33 are fixed on bearing seats, and the bearing seats are fixed in the sliding groove 23. The bidirectional lead screw 33 has two threads with different helix directions. A slider 31 is respectively arranged on both sides of the bidirectional lead screw 33. One end of the slider 31 is provided with a measuring rod 4. Guide grooves 32 are arranged on both sides of the slider 31. The guide grooves 32 are matched with the slide rails 34. The relative approaching or separating movement of the two measuring rods 4 is realized by the rotation of the bidirectional lead screw 33.

[0025] As Figure 1 and Figure 2 shown, a first laser sensor 27 facing the roll 28 is arranged on the driving arm 2 at the middle position between the two measuring rods 4. Specifically, the first laser sensor 27 is installed through a mounting block 25 and a mounting seat 26. The mounting block 25 is connected to the driving arm 2 by screws. A conical mounting seat 26 is arranged on one side of the mounting block 25. The first laser sensor 27 is installed inside the mounting seat 26 to ensure the protection effect.

[0026] As Figures 1 - 6 、 Figures 10 - 14 、Figures 16 - 18 As shown in the figure, a through groove 41 is formed inside the measuring rod 4. A rotating disk 6 is rotatably arranged in the through groove 41. A plurality of measuring blocks 631 are evenly distributed around the circumference of the rotating disk 6. A plurality of mutually staggered through holes are evenly arranged inside the rotating disk 6. An avoidance hole 632 facing the through hole is arranged in the middle of the measuring block 631. A pressing block 5 is detachably arranged on the measuring rod 4. A second laser sensor 521 is arranged inside the pressing block 5. The second laser sensor 521 is coaxially arranged with one of the through holes. The three laser sensors can respectively sense the vertical distance from them to the surface of the rolling mill roll 28.

[0027] This device can realize contact measurement and non-contact measurement. When performing contact measurement, the two measuring rods 4 are made to approach the roll 28 being ground online on the roll grinder, and the measuring blocks 631 are made to contact the roll 28, then contact measurement can be realized. When performing non-contact measurement, the two measuring rods 4 are made to move away from the roll 28 being ground online on the roll grinder, and the second laser sensor 521 on the measuring rod 4 and the first laser sensor 27 on the driving arm 2 are combined to realize three-point non-contact measurement. During non-contact measurement, the second laser sensor 521 realizes measurement by emitting and receiving laser. The laser ray passes through the through holes inside the rotating disk 6 and the avoidance hole 632 of the measuring block 631, and directly senses the surface of the roll 28 to realize measurement.

[0028] The present invention can perform real-time detection on the grinding state of the roll 28 during the grinding process of the roll 28. By using a three-point measurement system, it can realize contact measurement and non-contact measurement, avoiding the drawbacks brought by traditional single contact measurement or non-contact measurement. The two measurement methods are used in combination, achieving efficient and high-precision grinding and detection of the roll 28 at different stages, ensuring the detection accuracy and detection efficiency of the roll 28.

[0029] In the present invention, by optimizing the structure of the measuring rod 4, the laser sensor can be installed at the position of the pressing block 5. The second laser sensor 521 and the measuring block 631 are integrally designed and located at the same position, and they do not interfere with each other, and contact detection and non-contact detection can be realized at the same position. Such an on-line measuring device not only has a simple structure, but also is more efficient and fast in measurement, and has high measurement accuracy.

[0030] Such as Figures 1 - 6 、 Figures 10 - 14 、 Figures 16 - 18As shown in the figure, further, the rotating disk 6 is of a triangular prism structure. Shafts 61 are arranged on both sides of the rotating disk 6. A shaft hole 42 communicating with the through groove 41 is arranged on the measuring rod 4. The rotating disk 6 is rotatably arranged in the shaft hole 42 through the shafts 61. One end of the shaft 61 is connected to and driven by a second motor 62. The second motor 62 is arranged on the side wall of the measuring rod 4. By controlling the rotation of the rotating disk 6 through the second motor 62, positioning measurement of different measuring blocks 631 is realized. The circumference of the rotating disk 6 has three mounting surfaces 6a. Mounting grooves 63 are formed on the mounting surfaces 6a. The measuring blocks 631 are detachably arranged in the mounting grooves 63 on 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 penetrates and is arranged on the mounting surface 6a, and the other end penetrates and is arranged on the detection surface 6b.

[0031] Further, 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 that 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. As Figure 6 shown, the through hole includes a first through hole 65 and a second through hole 64 with different diameters. The technical effects brought are as follows: First, the variable-diameter through hole can well block pollutants. When one measuring block 631 is arranged opposite to the rolling mill 28, the two sides of this measuring block 631 are the first through holes 65. Even if pollutants enter the first through holes 65, they will be blocked by the second through holes 64 with smaller diameters, reducing the pollution on the side where the second laser sensor 521 is located. Second, when using compressed air for blowing later, the compressed air blows out successively through the second through hole 64 and the first through hole 65. The variable-diameter through hole can disperse the air, diffuse and shunt the compressed air, realize a larger range of purging, ensure the cleanliness inside the through hole, and at the same time ensure that the air blows out on the side of the rotating disk 6 close to the rolling mill 28 to prevent pollutants from entering.

[0032] Embodiment 2 As Figures 1 - 18 shown, in the present invention, a positioning mechanism is arranged on the pressing block 5. The positioning mechanism includes a cylinder 7 and a positioning cylinder 9. One cylinder 7 is symmetrically arranged on both sides of the pressing block 5. A piston 72 is slidably arranged 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 with the positioning cylinder 9. The positioning cylinder 9 can pass through the avoidance hole 632 and be cooperatively 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 accurate positioning of the rotating disk 6. Three through holes (the first through hole 65 and the second through hole 64) are arranged inside the rotating disk 6. One measuring block 631 is arranged opposite to the rolling mill 28 for measurement. The through hole corresponding to this measuring block 631 is used for the laser emission and reception of the second laser sensor 521. For the other two through holes, the cylinder 7 and the positioning cylinder 9 are inserted into the through holes to realize the positioning of the rotating disk 6 (as Figure 6As shown). This structure can install multiple measuring blocks 631 at one time to achieve switching measurement, and use the through hole inside the rotating disk 6 to achieve the measurement of the second laser sensor 521, while achieving the positioning installation of the rotating disk 6, and the structure is simple and ingenious.

[0033] Furthermore, a mounting rod 74 is extended from the end of the piston rod 73, the outer diameter of the mounting rod 74 is smaller than the outer diameter of the piston rod 73, the mounting rod 74 is threadedly connected to the positioning cylinder 9, a pressing 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 close to the pressing ring 83. With this arrangement, when the positioning cylinder 9 penetrates into the second through hole 64 to realize the positioning of the rotating disk 6, the pressing ring 83 is used to press the measuring block 631, so as to avoid the vibration and loosening of the rotating disk 6 and the measuring block 631 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, and at the same time, the existence of the first spring 741 can prevent the pressing ring 83 from acting excessively on the measuring block 631.

[0034] like Figures 1 - 19 As shown, further, an exhaust hole 75 is provided inside the piston rod 73 and the mounting rod 74, a threaded hole 91 is provided at one end of the positioning cylinder 9, a center hole 92 communicating with the threaded hole 91 is provided inside the positioning cylinder 9, a conical first valve port 93 and a second valve port 94 are symmetrically provided inside the positioning cylinder 9, a second spring 85 is provided inside the positioning cylinder 9, the second spring 85 is provided in the center hole 92, a first valve ball 84 is provided at the end of the second spring 85, the first valve ball 84 is provided close to the first valve port 93, and the first valve ball 84 is provided close to the mounting rod 74. The end of the mounting rod 74 is threadedly connected to the threaded hole 91. A plurality of slide rods 82 are evenly distributed on the circumference of the pressure ring 83. The slide rods 82 are slidably set in the slide hole 95 of the positioning cylinder 9. One end of the slide 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 arranged opposite to the first valve ball 84. The second valve ball 811 is arranged 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.

[0035] like Figure 6As shown in the figure, 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 conical disk 8 at the end is also arranged in the second through hole 64, and the position of the conical disk 8 cannot exceed the staggered position of the three through holes to avoid interfering with the second laser sensor 521. In this structure, while fixing the rotating disk 6, the cylinder 7 can continue to extend, and the positioning cylinder 9 moves away from the pressing ring 83, so that the push rod 81 abuts against the first valve ball 84 to open the first valve port 93. The air source flows out through the first valve port 93 and the second valve port 94 and reaches the first through hole 65 and the second through hole 64 to blow 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, avoiding the entry of pollutants, 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, ensuring the positioning effect of the positioning cylinder 9, and by controlling the telescopic stroke of the cylinder 7, intermittent purging can be achieved on the premise of positioning the rotating disk 6 through the positioning cylinder 9, ensuring the working environment of the rotating disk 6 and the second laser sensor 521.

[0036] The design of this structure is based on the fact that there are usually interference factors such as dust, oil stains, and grinding fluid at the grinding site of the roll 28. Especially during on-line contact measurement, the measuring block 631 contacts the moving roll 28, so the position of the rotating disk 6 is easily contaminated, affecting the detection effect of the second laser sensor 521. Therefore, in view of 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 ensure that the measuring block 631 and the rotating disk 6 are in a clean state.

[0037] Furthermore, receiving holes 54 are symmetrically opened on both sides of the pressing block 5, and the piston rod 73 is slidably arranged in the receiving holes 54, and the positioning cylinder 9 can be retracted into the receiving holes 54. When the positioning cylinder 9 is retracted into the receiving holes 54, the rotating disk 6 can be rotated to adjust the position of the measuring block 631.

[0038] Furthermore, the through groove 41 is set in an arc shape, and the pressing block 5 is provided with a conical mounting portion 51, and an arc-shaped bottom groove 53 is opened at the bottom side of the mounting portion 51 for the rotating disk 6 to rotate.

[0039] In the present invention, the fixing method of the measuring rod 4 of the pressing block 5 is as follows: a third mounting hole 52 is provided in the mounting portion 51, and the second laser sensor 521 is mounted in the third mounting hole 52. A fifth mounting hole 57 is provided around the pressing block 5, and a second mounting hole 44 is provided on the measuring rod 4. By aligning the second mounting hole 44 with the fifth mounting hole 57 and screwing in screws, the pressing block 5 is fixed to the side wall of the measuring rod 4. A convex block 56 is provided on the bottom side of the pressing block 5, and the convex block 56 is engaged in 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 outer sides of the receiving holes 54. The cylinder 7 has a cylinder base 71, and the cylinder base 71 is connected by screws and arranged in the fourth mounting holes 55 to realize the mounting of the cylinder 7.

[0040] Further, two first mounting holes 43 are respectively provided on both sides of the measuring rod 4, three positioning holes 66 are axially provided in the rotating disk 6, the positioning holes 66 are arranged through the first through hole 65, and two limiting columns 10 are respectively horizontally arranged on both sides of the measuring rod 4. The limiting columns 10 can be docked with the positioning holes 66. One end of the limiting column 10 has a screw rod 101, and the screw rod 101 is threadedly connected in the first mounting hole 43. A third spring 102 is arranged inside the limiting column 10, a limiting ball 103 is arranged at the end of the third spring 102, the outer diameter of the limiting ball 103 is larger than the inner diameter of the positioning hole 66, the limiting ball 103 is slidably arranged in the first mounting hole 43, and a part of the limiting ball 103 can be arranged in the positioning hole 66 in a matching manner. With such a design, when the rotating disk 6 rotates, the positioning holes 66 on the rotating disk 6 will rotate to the position of the limiting ball 103 to achieve clamping and limiting, and the precise adjustment of the rotating disk 6 is realized.

[0041] Embodiment 3 An on-line measuring method for roll grinding is as follows: S1, High-speed grinding stage: When the roll 28 is moving at high speed for grinding, control the two measuring rods 4 to be away from the roll 28 (at this time, the measuring block 631 does not contact the roll 28 moving at high speed to avoid wear caused by high-speed movement). The three laser sensors perform non-contact detection to monitor the geometric dimensions of the roll 28, feed back data, and guide the adjustment of grinding parameters. The roll 28 rotates at high speed, and the grinding equipment performs efficient grinding to quickly remove the material on the surface of the roll 28, initially meeting the dimensional and shape requirements.

[0042] S2, Low-speed grinding stage: When the roll 28 is grinding at a low speed, control the two measuring rods 4 to approach the roll 28, so that the measuring block 631 contacts the roll 28 to achieve contact measurement, reducing contact wear. At the same time, three laser sensors are used for non-contact detection. In this stage, the roll 28 rotates at a low speed, and the grinding equipment performs fine grinding to further improve the dimensional accuracy and surface quality of the roll 28, ensuring that the high-precision requirements are met. Under low-speed conditions, the contact measuring block 631 performs high-precision measurement on the surface of the roll 28, and at the same time, the results of non-contact detection can be verified online. The two assist in grinding to ensure the accuracy of the measurement results.

[0043] S3, Ultra-low-speed grinding or static detection stage: The roll 28 is stationary or rotating at an extremely low speed. Control the two measuring rods 4 to approach the roll 28, so that the measuring block 631 contacts the roll 28 to achieve contact measurement for comprehensive measurement. Under static conditions, contact detection can achieve the highest measurement accuracy.

[0044] 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 need to ensure the original accuracy to avoid deviation of 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 error between the results of contact measurement and non-contact measurement is too large, at this time, the spare measuring block 631 needs to be replaced to ensure that the error is not caused by the wear of the measuring block 631, ultimately ensuring the grinding quality and detection accuracy.

[0045] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roll grinding online measuring device, characterized in that: 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 be away from and close to the roll being ground online on the roll grinder; a first laser sensor facing the roll is arranged on the driving arm at a middle position between the two measuring rods; A through slot is provided inside the measuring rod, a rotating disk is rotatably arranged 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 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 inside 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 laser sensor to the surface of the roller.

2. The roll grinding online measuring device according to claim 1, characterized in that: The rotating disk is a triangular prism structure, and the circumference of the rotating disk has three mounting surfaces, and the measuring block is arranged on the mounting surfaces; a detection surface is arranged 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.

3. The roll grinding online measuring device according to claim 2, characterized in that: The through hole comprises a first through hole and a second through hole with two sections having different diameters. The inner diameter of the first through hole is greater 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.

4. The roll grinding online measuring device according to claim 3 is characterized in that: The pressing 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 pressing block, and the end of the piston rod of the cylinder is detachably connected with a positioning tube. The positioning tube can pass through the avoidance hole and be matched in the second through hole.

5. The roll grinding online measuring device according to claim 4, 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 tube, 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 tightly against the pressure ring.

6. The roll grinding online measuring device according to claim 5, characterized in that: The piston rod and the mounting rod are provided with exhaust holes through-through, the positioning cylinder is symmetrically provided with a first conical valve port and a second conical valve port, the positioning cylinder is provided with a second spring, the end of the second spring is provided with a first valve ball, 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 on the circumference of the pressure ring, the sliding rods are slidably provided in the sliding holes of the positioning cylinder, one end of the sliding rods is connected to a conical disk, the conical disk is provided on the bottom side of the positioning cylinder, a push rod is provided on the conical disk extending toward the positioning cylinder, the push rod is provided opposite to the first valve ball, a second valve ball is provided on the push rod, 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.

7. The roll grinding online measuring device according to claim 5, 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.

8. 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 at the bottom side of the mounting portion.

9. 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 connected with the positioning holes; a third spring is arranged inside the limit column, and a limit ball is arranged at the end of the third spring. The outer diameter of the limit ball is larger than the inner diameter of the limit hole, and the limit ball can be matched and arranged in the positioning hole.

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

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