A method and device for comprehensive measurement of geometric state of contact and non-contact of an ultra-large ring in radial-axial rolling

Abstract

The application discloses a kind of super large ring piece radial axial rolling geometric state contact non-contact comprehensive measuring method and device, comprising: fixed support, the left side of the fixed support is fixedly connected with driving roller by bearing, and fixed support is symmetrically provided with left guide roller and right guide roller on the upside and downside right side of driving roller, and fixed support is connected with core roller by bearing on the right side rear side of driving roller, the front end of the core roller is movably inserted on displacement support by bearing, and the right side of the fixed support is fixedly connected with taper roller.The overall structure of the equipment, through the contact or non-contact detection mode combined with the magnetic displacement sensor and laser displacement sensor, has the characteristics of high measurement accuracy, fast speed, safety and stability, and does not need to make great changes to the original ring rolling equipment, ensures the product quality of super large ring rolling process, improves the ring detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of ring rolling technology, and more specifically, to a method and apparatus for comprehensive measurement of the contact and non-contact geometric state of ultra-large rings during radial and axial rolling. Background Technology

[0002] Ultra-large ring components, such as tunnel boring machine connecting rings, rocket casing transition rings, nuclear reactor support rings, and wind turbine bearing rings, are widely used as important structural components in aerospace, energy, and other fields. Axial and radial rolling of ring components offers advantages such as high forming precision and excellent mechanical properties, making it an advanced technology for manufacturing high-performance ultra-large ring components.

[0003] The principle of axial rolling of ring parts is as follows: Figure 2 As shown, the drive roller 1 rotates actively, causing the ring 4 to rotate. The core roller 5 pushes the ring through radial feed motion, making the outer surface of the ring fit against the drive roller. The left guide roller 2 and the right guide roller 3 move in a circular motion around a fixed point, clamping the ring 4 together to prevent it from shifting during processing, thus affecting rolling stability and roundness. The tapered roller 6 is divided into an upper tapered roller and a lower tapered roller, which perform active rotation, transverse and longitudinal feed, and retraction. Under the synergistic action of all the rollers, the ring undergoes continuous plastic deformation, resulting in thinning of the wall thickness, reduction of height, and increase of diameter.

[0004] The geometry of ultra-large rings changes significantly before and after rolling. The radial dimension increases several times compared to the initial ring blank, and the rotational inertia and stiffness conditions also change significantly, adversely affecting the rolling forming effect and control stability of the rings. When the ring is in an unstable state during rolling, its position will shift, and the ring center will deviate from the line connecting the center of the drive roll and the core roll. This will cause the guide roll to detach from or squeeze the ring, and the tapered roll will roll the ring unevenly, causing severe deformation or even out-of-roundness of the ring product. Therefore, in order to ensure the rolling forming effect, it is necessary to measure the geometric state of the ring in real time to facilitate subsequent processing control. Moreover, the rolling forming time of ultra-large rings is extremely long, and the rolling environment is high-temperature and harsh. It is difficult to obtain accurate real-time data using traditional manual caliper measurement methods, and the feasibility is low. Therefore, we propose a comprehensive contact and non-contact measurement method and device for the radial and axial rolling geometry of ultra-large rings. Summary of the Invention

[0005] The purpose of this invention is to provide a method and apparatus for comprehensive contact and non-contact measurement of the geometric state of ultra-large ring parts during radial and axial rolling. By combining a magnetostrictive displacement sensor and a laser displacement sensor for contact or non-contact detection, it features high measurement accuracy, high speed, safety and stability, and does not require major modifications to the original ring rolling equipment. This ensures the product quality of the ultra-large ring rolling process and improves the ring inspection efficiency.

[0006] The technical solution adopted by the present invention, which discloses a method and apparatus for comprehensive measurement of the contact and non-contact geometric state of an ultra-large ring during radial and axial rolling, is as follows: A comprehensive measurement apparatus for the contact and non-contact geometric state of an ultra-large ring during radial and axial rolling, comprising:

[0007] A fixed support is provided, with a drive roller fixedly connected to the left side of the fixed support via a bearing. A left guide roller and a right guide roller are symmetrically arranged on the upper and lower right sides of the fixed support and the right rear side of the drive roller via a bearing. A core roller is connected to the fixed support on the right rear side of the drive roller via a bearing. The front end of the core roller is movably inserted into the displacement support via a bearing. A tapered roller is fixedly connected to the right side of the fixed support, and a laser displacement sensor is fixedly connected to the right side of the fixed support.

[0008] As a preferred embodiment, a ring is movably inserted between the drive roller and the core roller, and the upper and lower sides of the left outer side of the ring are in contact with the outer sides of the left guide roller and the right guide roller, and the right side of the ring is clamped by the upper and lower conical rollers.

[0009] As a preferred embodiment, the front and rear ends of the left and right guide rollers are both connected to a retaining arm connecting rod via bearings, and the left end of the retaining arm connecting rod is connected to a guide roller drive cylinder via a rotating shaft. Furthermore, a displacement sensor, such as a magnetostrictive displacement sensor, is fixedly connected inside the transmission rod of the guide roller drive cylinder.

[0010] As a preferred embodiment, the center of the drive roller, the center of the core roller, and the center of the laser displacement sensor are located on the same straight line.

[0011] A method for comprehensive measurement of the contact and non-contact geometric state of an ultra-large ring component during radial and axial rolling, comprising a comprehensive measurement device for the contact and non-contact geometric state of an ultra-large ring component during radial and axial rolling as described in any one of claims 1-4, wherein the magnetostrictive displacement sensor calculates the coordinate position of the center of the left guide roller by recording the extension and retraction distance of the guide roller drive cylinder of the left guide roller during the rolling process of the ring component, and the laser displacement sensor obtains the coordinate information of the measurement points on the outer surface of the drive roller and the outer surface of the ring component located on the line connecting the center of the drive roller and the laser displacement sensor;

[0012] The measurement method includes the following steps:

[0013] Step 1: Obtain the coordinate position of the center of the drive roller and the radius R1 of the drive roller, and generate the global position coordinate system X0Y and the corresponding coordinate information (x1,0) of the center of the drive roller O1;

[0014] Step 2: Obtain the position and corresponding coordinate information of the connection point between the guide roller drive cylinder and the fixed support, and obtain the position and corresponding coordinate information of the connection point between the left guide roller and the fixed support. At the same time, establish a local coordinate system X with point C as the origin. c CY c ;

[0015] Step 3: Obtain the extension dimension of the guide roller drive cylinder, the coordinate information of the connection point between the guide roller arm and the fixed support, the length and included angle of the guide roller arm connecting rod, and the radius R of the guide roller. g ;

[0016] Step 4: Using the above geometric dimensions and coordinate information, calculate the coordinates O of the centers of the left and right guide rollers in the global coordinate system. gu (x2,y2) and O gd (x3,y3);

[0017] Step 5: Set a virtual guide roller on the right side of the ring, based on the center M of the virtual guide roller and the centers O of the left and right guide rollers. gu O gd The radius R0 and diameter D0 of the ring can be determined using coordinates.

[0018] Step 6: When the ring is not mounted, obtain the coordinates (x4, 0) of the measurement point P on the drive roller by the laser displacement sensor. When rolling the ring, obtain the coordinate information (x4′, 0) of the measurement point Q on the outer surface of the ring by the laser displacement sensor. Then the chord length of the ring is: x4′-x4.

[0019] Based on the relationship between chord length and radius, we have:

[0020]

[0021] Thus, the longitudinal position deviation d of the ring and the coordinates (x0, y0) of the ring center are obtained;

[0022] The measurement method described above can be used to measure a certain moment t during the ring rolling process. n The corresponding ring diameter D 0n and machining offset d n Let the time series of the ring rolling process be T, where T = {t0, t1, t2...t}. n ...t m}, then the radius of the ring can be measured accordingly. R0={R 00 R 01 R 02 ...R 0n ...R 0m}, diameter D0={D 00 D 01 D 02 ...D 0n ...D 0m}, positional deviation d={d0,d1,d2...d n ...d m}

[0023] The roundness error of the rolled ring is:

[0024] R m =R 0max -R 0min

[0025] The results show that the smaller the roundness error and displacement deviation, the closer the ring is to the ideal circle, the more stable the rolling process, and the better the product forming effect.

[0026] As a preferred embodiment, the virtual measuring roller has no actual volume, but its dimensions are the same as the actual guide roller. The virtual measuring roller is tangent to the contour line of the ring surface. The virtual measuring roller M is located on the x-axis, and the coordinates of point M can be derived from the laser measuring point and the radii of the left and right guide rollers. Since the radius of the virtual measuring roller is much smaller than the radius of the ring, and the actual offset distance of the ring during rolling is much smaller than the radius of the ring, the length of MQ can be considered equal to the radius of the virtual measuring roller. In ΔABC, AB, BC, and CA are all known quantities. According to the law of cosines, we can obtain:

[0027]

[0028] but:

[0029]

[0030] In a coordinate system with O1 as the origin, the coordinates of points A and C are known, so AC and X can be calculated. c The negative semi-axis angle, ∠ACB, and ∠BCM are all known quantities, so ∠O can be calculated. gu CN.

[0031] In right angle ΔO gu In CN, O gu C、∠O gu If CN is a known quantity, then:

[0032] O gu N=O gu C×sin∠O gu CN

[0033] CN=O gu C×cos∠O gu CN

[0034] Then we can get O gu In coordinate system X c CY c Lower coordinates, through coordinate system transformation X c CY c -XO1Y, and the center O of the left guide roller (2) can be obtained. gu The coordinates are (x2, y2), and similarly, the center O of the right guide roller (3) can be obtained. gd Coordinates (x3, y3).

[0035] As a preferred embodiment, the method for measuring the position deviation d is as follows: M and O are obtained by solving the measurement methods in steps 1, 2, 3, 4, and 5. gu O gd After determining the coordinates of the three points, ∠O can be obtained. gu MO gd Angle information:

[0036]

[0037]

[0038]

[0039] In isosceles ΔO gu O0O gd In the middle, it is known that O gu O gd and ∠O gu O0O gd ,have:

[0040]

[0041] Among them O gu O0=O0O gd =R0+R g

[0042] Then we have:

[0043]

[0044] Ring diameter:

[0045]

[0046] String length:

[0047] PQ = X4' - X4

[0048] Offset:

[0049]

[0050] The beneficial effects of the contact and non-contact integrated measurement method, device and system for the radial and axial rolling geometry of ultra-large ring parts disclosed in this invention are:

[0051] By utilizing the overall structure of the equipment and combining information from magnetostrictive displacement sensors, the center positions of the left and right guide rollers, and laser displacement sensors to measure the position of observation points on the ring, the radius calculation formula and the center coordinates of the ring can be derived. This enables real-time measurement of the diameter, offset, and roundness of ultra-large rings. Simultaneously, the overall structure allows for automated measurement of the geometric state of the rolled rings. The combination of magnetostrictive and laser displacement sensors in contact or non-contact detection methods offers high accuracy, speed, safety, and stability, without requiring significant modifications to existing ring rolling equipment. This ensures product quality in the ultra-large ring rolling process and improves ring inspection efficiency. Attached Figure Description

[0052] Figure 1 This is a diagram showing the overall structural position of the present invention;

[0053] Figure 2 This is a schematic diagram of the normal operating conditions of the present invention;

[0054] Figure 3 This is a schematic diagram of the above-side working condition of the present invention;

[0055] Figure 4 This is a schematic diagram of the lower bias working condition of the present invention;

[0056] Figure 5 This is a schematic diagram of the measurement method of the present invention.

[0057] In the diagram: 1. Drive roller; 2. Left guide roller; 3. Right guide roller; 4. Ring; 5. Core roller; 6. Conical roller. Detailed Implementation

[0058] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0059] Please see Figure 1-5 This invention relates to a comprehensive contact and non-contact measurement device for the radial and axial rolling geometry of ultra-large ring components, comprising:

[0060] A fixed support is provided, on which a drive roller 1 is fixedly connected via a bearing on the left side. A left guide roller 2 and a right guide roller 3 are symmetrically arranged on the upper, lower, and right sides of the drive roller 1. A core roller 5 is connected to the right rear side of the drive roller 1 via a bearing. The front end of the core roller 5 is movably inserted into the displacement support via a bearing. A conical roller 6 is fixedly connected to the right side of the fixed support, and a limit groove is opened in the middle of the left end of the conical roller 6. A laser displacement sensor is fixedly connected to the right side of the fixed support.

[0061] Specifically: the conical roller 6 supports the ring 4 for stable processing. The drive roller 1 drives its shaft through an external transmission mechanism. When the drive roller 1 rotates, it presses against the outer side of the ring 4, thereby causing the ring 4 to rotate. The core roller 5 is also used to increase the stability of the ring 4's rotation. The front end of the core roller 5 is equipped with a displacement support. The displacement support can move back and forth. When the displacement support and the front end of the core roller 5 are separated to a certain rectangle, the ring 4 can be inserted and placed in the designated position. The laser displacement sensor uses a sensor that is already available on the market.

[0062] A ring 4 is movably inserted between the drive roller 1 and the core roller 5. The upper and lower sides of the left outer side of the ring 4 are in contact with the outer sides of the left guide roller 2 and the right guide roller 3. The right side of the ring 4 is clamped by the upper and lower conical rollers.

[0063] Specifically: in addition to preventing the ring 4 from shifting during processing, the left guide roller 2 and the right guide roller 3 can also position the ring 4.

[0064] The front and rear ends of the left guide roller 2 and the right guide roller 3 are connected to the arm connecting rods via bearings, and the left end of the arm connecting rod is connected to the guide roller drive cylinder via a rotating shaft. A magnetostrictive displacement sensor is fixedly connected inside the transmission rod of the guide roller drive cylinder.

[0065] Specifically: the guide roller drive cylinder can drive the corresponding left guide roller 2 or right guide roller 3 to move, so that the outer side of the left guide roller 2 or right guide roller 3 is always in contact with the outer side of the ring 4, making the rotation of the ring 4 more stable. The magnetostrictive displacement sensor adopts the sensor available on the market.

[0066] The center of the drive roller 1, the center of the core roller 5, and the center of the laser displacement sensor are located on the same straight line, which facilitates the measurement of the working state of the subsequent radial and axial rolling of the ring.

[0067] A method for comprehensive measurement of the contact and non-contact geometric state of an ultra-large ring component during radial and axial rolling, comprising a comprehensive measurement device for the contact and non-contact geometric state of an ultra-large ring component during radial and axial rolling as described in any one of claims 1-4, wherein the magnetostrictive displacement sensor calculates the coordinate position of the center of the left guide roller 2 by recording the extension and retraction distance of the guide roller drive cylinder of the left guide roller 2 during the rolling process of the ring component 4, and the laser displacement sensor obtains the coordinate information of the measurement points on the outer surface of the drive roller 1 and the outer surface of the ring component 4 located on the line connecting the center of the drive roller 1 and the laser displacement sensor;

[0068] The measurement method includes the following steps:

[0069] Step 1: Obtain the center coordinates of drive roller 1 and the radius R1 of drive roller 1, and generate a global position coordinate system and the corresponding coordinate information (x1,0) of the center O1 of drive roller 1.

[0070] Step 2: Obtain the position and corresponding coordinate information of the connection point between the guide roller drive cylinder and the fixed support, and obtain the position and corresponding coordinate information of the connection point between the left guide roller 2 and the fixed support;

[0071] Step 3: Obtain the extension dimension of the guide roller drive cylinder, the coordinate information of the connection point between the guide roller arm and the fixed support, the length and included angle of the guide roller arm connecting rod, and the radius R of the guide roller. g ;

[0072] Step 4: Using the above geometric dimensions and coordinate information, calculate the coordinate information O of the centers of the left guide roller 2 and the right guide roller 3 in the global coordinate system. gu (x2,y2) and O gd (x3,y3);

[0073] Step 5: Set a virtual guide roller on the right side of ring 4, based on the center M of the virtual guide roller and the centers O of the left guide roller 2 and the right guide roller 3. gu O gd Calculate the radius R0 and diameter D0 of ring 4 using coordinates;

[0074] Step 6: When the ring 4 is not installed, obtain the coordinates (x4,0) of the measurement point P on the drive roller 1 by the laser displacement sensor. When rolling the ring 4, obtain the coordinate information (x4′,0) of the measurement point Q on the outer surface of the ring 4 by the laser displacement sensor. Then the chord length of the ring 4 is: x4′-x4.

[0075] Based on the relationship between chord length and radius, we have:

[0076]

[0077] Thus, the longitudinal position deviation d of ring 4 and the coordinates (x0, y0) of the center of ring 4 are obtained;

[0078] Based on the above measurement method, the value of t at a certain moment during the rolling process of ring 4 can be measured. n The corresponding ring part 4 has a diameter D 0n and machining offset d n Let the time series of the rolling process of ring 4 be T, where T = {t0, t1, t2...t} n ...t m}, then the radius of the ring can be measured accordingly.

[0079] R0={R 00 R 01 R 02 ...R 0n ...R 0m}, diameter D0={D 00 D 01 D 02 ...D0n ...D 0m}, positional deviation d={d0,d1,d2...d n ...d m}

[0080] The roundness error of the rolled ring part 4 is:

[0081] R m =R 0max -R 0min

[0082] The results show that the smaller the roundness error and displacement deviation, the closer the ring 4 is to the ideal circle, the more stable the rolling process, and the better the product forming effect.

[0083] The virtual measuring roller has no actual volume, but its dimensions are the same as the actual guide roller. The virtual measuring roller is tangent to the surface contour line of the ring 4. The virtual measuring roller M is located on the x-axis, and the coordinates of point M can be derived from the laser measuring point and the radii of the left guide roller 2 and the right guide roller 3. Since the radius of the virtual measuring roller is much smaller than the radius of the ring 4, and the offset distance of the ring 4 during the actual rolling process is much smaller than the radius of the ring 4, it can be assumed that the length of MQ is equal to the radius of the virtual measuring roller. In ΔABC, AB, BC, and CA are all known quantities. According to the law of cosines, we can obtain:

[0084]

[0085] but:

[0086]

[0087] In a coordinate system with O1 as the origin, the coordinates of points A and C are known, so AC and X can be calculated. c The negative semi-axis angle, ∠ACB, and ∠BCM are all known quantities, so ∠O can be calculated. gu CN.

[0088] In right angle ΔO gu In CN, O gu C、∠O gu If CN is a known quantity, then:

[0089] O gu N=O gu C×sin∠O gu CN

[0090] CN=O gu C×cos∠O gu CN

[0091] Then we can get O gu In coordinate system X c CY c Lower coordinates, through coordinate system transformation Xc CY c -XO1Y, and the center O of the left guide roller (2) can be obtained. gu The coordinates are (x2, y2), and similarly, the center O of the right guide roller (3) can be obtained. gd Coordinates (x3, y3).

[0092] The method for measuring the position deviation d is as follows: M and O are obtained by solving the measurement methods in steps 1, 2, 3, 4, and 5. gu O gd After determining the coordinates of the three points, ∠O can be obtained. gu MO gd Angle information:

[0093]

[0094]

[0095]

[0096] In isosceles ΔO gu O0O gd In the middle, it is known that O gu O gd and ∠O gu O0O gd ,have:

[0097]

[0098] Among them O gu O0=O0O gd =R0+R g

[0099] Then we have:

[0100]

[0101] Ring 4 diameter:

[0102]

[0103] String length:

[0104] PQ = X4' - X4

[0105] Offset:

[0106]

[0107] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and industrial computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by industrial computer program instructions. These industrial computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing device, generate instructions for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 A system that specifies functions in one or more boxes.

[0108] These industrial computer program instructions can also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including an instruction system implemented in the process. Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0109] These industrial computer program instructions can also be loaded onto a computer or other programmable data processing equipment, causing a series of operational steps to be executed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the functions specified in one or more boxes. Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0110] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A comprehensive contact and non-contact measurement device for the radial and axial rolling geometry of ultra-large ring parts, characterized in that: include: A fixed support is provided, with a drive roller (1) fixedly connected to the left side of the fixed support via a bearing. A left guide roller (2) and a right guide roller (3) are symmetrically provided on the upper and lower right sides of the drive roller (1). A core roller (5) is connected to the right rear side of the fixed support via a bearing. The front end of the core roller (5) is movably inserted into the displacement support via a bearing. A conical roller (6) is fixedly connected to the right side of the fixed support. The conical roller (6) is clamped by upper and lower clamping rings (4). A laser displacement sensor is fixedly connected to the right side of the fixed support. A ring (4) is movably inserted between the drive roller (1) and the core roller (5), and the upper and lower sides of the left outer side of the ring (4) are in contact with the outer sides of the left guide roller (2) and the right guide roller (3), and the right side of the ring (4) is movably inserted between the left sides of the upper and lower cone rollers (6). The front and rear ends of the left guide roller (2) and the right guide roller (3) are connected to the arm connecting rod through bearings, and the left end of the arm connecting rod is connected to the guide roller drive cylinder through the rotating shaft. A magnetostrictive displacement sensor is fixedly connected inside the transmission rod of the guide roller drive cylinder. The magnetostrictive displacement sensor calculates the center coordinate position of the left guide roller (2) by recording the extension and retraction distance of the guide roller drive cylinder of the left guide roller (2) during the rolling process of the ring (4). The laser displacement sensor obtains the coordinate information of the measurement point on the outer surface of the drive roller (1) and the outer surface of the ring (4) located on the center of the drive roller (1) and the laser displacement sensor line. The measurement method includes the following steps: Step 1: Obtain the center coordinate position of the drive roller (1) and the radius R1 of the drive roller (1), and generate the global position coordinate system X01Y and the corresponding coordinate information (x1,0) of the center O1 of the drive roller (1). Step 2: Obtain the position and corresponding coordinate information of the connection point between the guide roller drive cylinder and the fixed support, obtain the position and corresponding coordinate information of the connection point C between the left guide roller (2) and the fixed support, and at the same time establish a local coordinate system X with point C as the origin. c CY c ; Step 3: Obtain the extension dimension of the guide roller drive cylinder, the coordinate information of the connection point between the guide roller arm and the fixed support, the length and included angle of the guide roller arm connecting rod, and the radius R of the guide roller. g ; Step 4: Calculate the coordinates of the centers of the left guide roller (2) and the right guide roller (3) in the global coordinate system using geometric dimensions and coordinate information. gu (x2, y2) and O gd (x3, y3); Step 5: Set a virtual guide roller on the right side of the ring (4), based on the center M of the virtual guide roller and the center O of the left guide roller (2) and the right guide roller (3). gu O gd The radius R0 and diameter D0 of the ring (4) are determined by coordinates. Step 6: When the ring (4) is not installed, obtain the coordinates (x4,0) of the measurement point P of the laser displacement sensor on the drive roller (1). When rolling the ring (4), obtain the coordinate information (x4′,0) of the measurement point Q of the laser displacement sensor on the outer surface of the ring (4). Then the chord length of the ring (4) is: x4′-x4. Based on the relationship between chord length and radius, we have: ； Thus, the longitudinal position deviation d of the ring (4) and the center coordinates (x0, y0) of the ring (4) are obtained. The measurement method described above can be used to measure the time t at a certain moment during the rolling process of the ring (4). n The corresponding ring (4) has a diameter D. 0n and machining offset d n Let the time series of the rolling process of the ring (4) be T, where T = {t0, t1, t2...t} n ...t m }, then the corresponding ring radius can be measured, R0={R 00 ,R 01 ,R 02 ...R 0n ...R 0m }, diameter D0={D 00 D 01 D 02 ...D 0n ...D 0m }, positional deviation d = {d0, d1, d2...d} n ...d m }, The roundness error of the rolled ring (4) is: ； It was found that the smaller the roundness error and displacement deviation, the closer the ring (4) is to the ideal circle, the more stable the rolling process is, and the better the product forming effect.

2. The contact and non-contact integrated measurement device for the radial and axial rolling geometry of ultra-large ring parts according to claim 1, characterized in that: The center of the drive roller (1), the center of the core roller (5), and the center of the laser displacement sensor are located on the same straight line.

3. The contact and non-contact integrated measurement device for the radial and axial rolling geometry of ultra-large ring parts according to claim 1, characterized in that: The virtual measuring roller has no actual volume, but its size is the same as that of the actual guide roller. The virtual measuring roller is tangent to the surface contour line of the ring (4). The virtual measuring roller M is located on the x-axis. The coordinates of point M can be derived from the laser measuring point and the radii of the left guide roller (2) and the right guide roller (3). Since the radius of the virtual measuring roller is much smaller than the radius of the ring (4), and the offset distance of the ring (4) during the actual rolling process is much smaller than the radius of the ring (4), it can be assumed that the length of MQ is equal to the radius of the virtual measuring roller. In △ABC, AB, BC, and CA are all known quantities. According to the cosine theorem, we can obtain: ； but: ； In a coordinate system with O1 as the origin, the coordinates of points A and C are known, so AC and X can be calculated. c The negative semi-axis angle, ∠ACB, and ∠BCM are all known quantities, so ∠O can be calculated. gu CN; In right triangle O gu In CN, O gu C、∠O gu If CN is a known quantity, then: ； ； Then we can get O gu In coordinate system X c CY c Lower coordinates, through coordinate system transformation X c CY c —XO1Y, and the center of the left guide roller (2) can be obtained. The coordinates (x2, y2) are used to obtain the center of the right guide roller (3). Coordinates (x3, y3).

4. The contact and non-contact integrated measurement device for the radial and axial rolling geometry of ultra-large ring parts according to claim 3, characterized in that: The method for measuring the position deviation d is as follows: M is obtained by solving the measurement methods in steps 1, 2, 3, 4, and 5. , After obtaining the coordinates of the three points, you can get Angle information: ； ； ； isosceles In the middle, it is known and ,have: ； in = = ; Then we have: ； Ring (4) diameter: ； String length: ； Offset: 。

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