A device for shape correction of large ring members

Abstract

A device for large ring shape correction, comprising a ring, a center base, a supporting roller mechanism, a measuring centering mechanism, a clamping limiting mechanism and a thrust block mechanism, a plurality of supporting roller mechanisms are evenly arranged on the circumference of the ring for driving the ring to rotate; a plurality of measuring centering mechanisms are evenly arranged on the circumference of the ring for positioning the ring center position, measuring the ring roundness error and the end face unevenness; a plurality of clamping limiting mechanisms are evenly arranged on the circumference of the ring for limiting the movement of the ring contact position; a plurality of thrust block mechanisms are evenly arranged on the circumference of the ring, one end of the thrust block mechanism is connected with the center base, the other end is in contact with the ring, the thrust block mechanism works on the ring along the radial outward to change the ring curvature to realize the roundness correction, works on the ring along the axial upward to change the ring end face curvature to realize the flatness and column correction. The present application can comprehensively correct the ring roundness, flatness and cylindricity, and has strong versatility for many shape error categories.

Description

Technical Field

[0001] This invention relates to the field of metal ring processing, and more specifically to a device for shape correction of large rings. Background Technology

[0002] With the rapid development of aerospace, ocean-going equipment, and energy infrastructure, the demand for ring-shaped parts, especially large ring-shaped parts, is increasing. Because ring rolling is highly efficient, produces minimal pollution, and generates excellent ring performance, it is widely used in the production of rings.

[0003] However, during the rolling process of rings, factors such as errors in rolling equipment, control precision errors, and the ring's own flexibility can lead to certain shape errors in the produced rings. For example, low positioning accuracy of the guide rollers can easily cause ellipticity in the rings; errors in the movement position of the tapered rollers can easily cause warping of the rings, i.e., uneven end faces; and unreasonable core roller feed can lead to roller climbing, introducing cylindricity errors. Especially in the rolling production of irregularly shaped rings, uneven deformation of the rings and uneven stress on the upper and lower end faces can further increase the possibility of large shape errors. On the other hand, uneven cross-sectional deformation and temperature changes during the rolling process can introduce large residual stresses. Therefore, the release of residual stress can also cause certain changes in the shape of the rings, further affecting the shape accuracy of the rings. However, existing ring straightening devices have limited coverage for shape error categories, poor versatility, high complexity, and require significant power for straightening large rings. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a device for correcting the shape of large ring parts, which can comprehensively correct the roundness, flatness and cylindricity of the ring parts, and has a wide range of shape error categories and strong versatility.

[0005] The technical solution adopted by this invention to solve its technical problem is a device for correcting the shape of a large ring, comprising a ring, a central base, a support roller mechanism, a measuring and centering mechanism, a clamping and limiting mechanism, and a thrust slider mechanism. Each of the support roller mechanism, measuring and centering mechanism, clamping and limiting mechanism, and thrust slider mechanism comprises at least three sets. Multiple sets of support roller mechanisms are evenly arranged on the circumference of the ring to drive its rotation. Multiple sets of measuring and centering mechanisms are evenly arranged on the circumference of the ring to locate the ring's center position and measure its roundness error and end-face unevenness. Multiple sets of clamping and limiting mechanisms are evenly arranged on the circumference of the ring to restrict the movement of the ring's contact position. Multiple sets of thrust slider mechanisms are evenly arranged on the circumference of the ring. One end of each thrust slider mechanism is connected to the central base, and the other end contacts the ring. The thrust slider mechanism performs work radially outward on the ring to change its curvature and achieve roundness correction, and performs work axially upward on the ring to change its end-face curvature and achieve leveling and column correction.

[0006] Furthermore, the central base is a solid cylinder, and at least three sets of positioning brackets are evenly distributed on the side of the cylinder near the upper end. One end of the thrust slider mechanism is connected to the central base through the corresponding positioning bracket.

[0007] Furthermore, the measuring centering mechanism includes a linear slide rail, a movable support, a positioning roller, and a measuring ball. The movable support is mounted on the linear slide rail and can move linearly on it. The positioning roller is mounted on the movable support, and its cylindrical side contacts the outer circle of the ring. The movable support is equipped with a motor that provides power to the movable support, causing it to generate a continuous force toward the center of the ring, thereby keeping the positioning roller in contact with the ring. A position sensor is mounted on the movable support to measure its position on the linear slide rail. A mounting shaft is provided at the upper end of the movable support. One end of the measuring ball is connected to the movable support via the mounting shaft, and the other end contacts the upper surface of the ring under gravity. An angle sensor is provided on the mounting shaft to measure the relative angle between the measuring ball and the movable support.

[0008] Furthermore, the movable support contacts the linear slide rail via a friction wheel, and the motor drives the friction wheel to rotate, causing the movable support to generate a continuous force toward the center of the ring.

[0009] Furthermore, the clamping and limiting mechanism includes an inner limiting block, an outer limiting block, and a slotted slide rail; the inner limiting block and the outer limiting block are disposed on the slotted slide rail, and the ring is clamped between the inner limiting block and the outer limiting block. The inner limiting block and the outer limiting block are connected by bolts to achieve clamping and limiting of the ring.

[0010] Furthermore, the upper end of the inner limiting block is connected to the upper end of the outer limiting block by bolts, and the lower end of the inner limiting block is connected to the lower end of the outer limiting block by bolts.

[0011] Furthermore, the outer contour of the inner limiting block is a box-shaped bracket with a right angled triangle, and the right angle side in contact with the ring is an arc surface. The upper end of the inner limiting block is provided with an upper bolt through hole; the outer contour of the outer limiting block is a box-shaped bracket with a right angled triangle, and the right angle side in contact with the ring is a plane. The upper end of the outer limiting block is provided with an upper bolt through hole; the upper bolt through hole of the inner limiting block and the upper bolt through hole of the outer limiting block are connected by bolts.

[0012] Furthermore, the lower end of the inner limiting block is provided with a sliding limiting block, which can drive the inner limiting block to slide on the slot slide rail. The sliding limiting block is movably connected to the slot slide rail to adjust the position to adapt to rings of different diameters.

[0013] Furthermore, fastening blocks are provided on both sides of the lower part of the inner limiting block, and side bolt through holes are opened on the fastening blocks. The tightness between the inner limiting block and the slot slide rail is adjusted by tightening the bolts on the fastening blocks.

[0014] Furthermore, the thrust slider mechanism includes a hydraulic push rod, a slider connecting rod, an actuating slider, a rotating slider, a slider pin, and a heavy-duty slide rail; one end of the hydraulic push rod is connected to the central base, and the other end is connected to the slider connecting rod; the slider connecting rod is connected to the rotating slider via a connecting pin; the rotating slider is wedge-shaped, with its lower end contacting the heavy-duty slide rail to form a sliding pair connection, and its upper end contacting the actuating slider; the upper end of the rotating slider is provided with a guide groove in its moving direction, and the guide groove is provided with an outer positioning through hole perpendicular to its moving direction; the lower end of the actuating slider has a guide block, and the guide block is provided with an inner positioning through hole; the guide block of the actuating slider is located in the guide groove of the rotating slider, and when the actuating slider needs to apply a radial load to the ring, the rotating slider and the actuating slider are fixedly connected by a slider pin passing through the outer positioning through hole and the inner positioning through hole; when the actuating slider needs to apply an axial load to the ring, the slider pin is removed, the rotating slider moves along the heavy-duty guide rail, and the rotating slider moves the actuating slider upward through the wedge-shaped surface.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] The device of this invention can comprehensively correct the roundness, flatness and cylindricity of rings, and it can handle a wide range of shape errors. It is highly versatile and has a simple structure. It also requires less power to correct large rings. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the device according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Top view of the embodiment shown.

[0019] Figure 3 yes Figure 1A schematic diagram of the measurement centering mechanism in the embodiment shown.

[0020] Figure 4 yes Figure 1 A schematic diagram of the clamping and limiting mechanism in the embodiment shown.

[0021] Figure 5 yes Figure 1 A schematic diagram of the thrust slider mechanism in the embodiment shown.

[0022] Figure 6 yes Figure 1 Disassembly diagram of the thrust slider mechanism in the embodiment shown.

[0023] Figure 7 yes Figure 1 A schematic diagram of the operation of the thrust slider mechanism in the embodiment shown.

[0024] In the diagram, 1—ring, 2—center base, 3—support roller mechanism, 4—measuring and centering mechanism, 5—clamping and limiting mechanism, 6—thrust slider mechanism, 21—positioning bracket, 41—linear slide rail, 42—moving bracket, 43—positioning roller, 44—measuring ball, 421—mounting shaft, 51—inner limiting block, 52—outer limiting block, 53—slotted slide rail, 511—upper bolt through hole, 512—lower bolt through hole, 513—sliding limiting block, 514—side bolt through hole, 61—hydraulic push rod, 62—slider connecting rod, 63—actuating slider, 64—indexing slider, 65—slider pin, 66—heavy-duty slide rail, 641—guide groove, 642—outer positioning through hole, 631—guide block, 632—inner positioning through hole. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figure 1 , Figure 2 The device for correcting the shape of large ring parts in this embodiment includes a ring part 1, a central base 2, a support roller mechanism 3, a measuring and centering mechanism 4, a clamping and limiting mechanism 5, and a thrust slider mechanism 6.

[0027] The central base 2 is a solid cylinder. Three sets of positioning brackets 21 are evenly distributed on the side of the cylinder near the upper end. The three sets of positioning brackets 21 are distributed in a circumference of 120 degrees.

[0028] There are three sets of support roller mechanisms 3, which are evenly arranged on the circumference of the ring 1. The three sets of support roller mechanisms 3 are distributed at 120 degrees around the circumference. The support roller mechanisms 3 are in contact with the lower end face of the ring 1. The support roller mechanisms 3 are active rollers used to drive the ring 1 to rotate.

[0029] There are three sets of measuring centering mechanisms 4, which are evenly distributed on the circumference of the ring 1. The three sets of measuring centering mechanisms 4 are distributed at 120 degrees around the circumference. The measuring centering mechanisms 4 are in contact with the outer cylindrical surface and the upper end surface of the ring 1, and are used to locate the center position of the ring, measure the roundness error of the ring and the flatness of the end face.

[0030] There are three sets of clamping and limiting mechanisms 5, which are evenly distributed on the circumference of the ring 1. The three sets of clamping and limiting mechanisms 5 are distributed at 120 degrees around the circumference. When working, they contact the inner and outer cylindrical surfaces of the ring 1 to limit the movement of the contact position of the ring 1.

[0031] There are three sets of thrust slider mechanisms 6, evenly distributed on the circumference of the ring 1. The three sets of thrust slider mechanisms 6 are distributed at 120 degrees around the circumference. One end of the thrust slider mechanism 6 is connected to the central base 2 through a corresponding positioning bracket 21. The thrust slider mechanism 6 and the positioning bracket 21 are connected by a rotary pin. The other end of the thrust slider mechanism 6 contacts the inner cylindrical surface and the lower end surface of the ring 1 during operation. The thrust slider mechanism 6, in cooperation with the clamping and limiting mechanism 5, performs work on the ring 1 radially outward to change the curvature of the ring to achieve rounding, and performs work on the ring 1 axially upward to change the curvature of the end face of the ring to achieve leveling and columnar straightening.

[0032] Reference Figure 3 The measuring centering mechanism 4 includes a linear slide rail 41, a movable support 42, a positioning roller 43, and a measuring ball 44. The movable support 42 is mounted on the linear slide rail 41 and can move linearly on the linear slide rail 41. The positioning roller 43 is mounted on the movable support 42, and the cylindrical side of the positioning roller 43 contacts the outer circle of the ring 1. The movable support 42 is equipped with a motor, which provides power to the movable support 42. The movable support 42 contacts the linear slide rail 41 through a friction wheel. The motor drives the friction wheel to rotate, causing the movable support 42 to generate a continuous force toward the center of the ring 1, thereby making the ring 1 move linearly. The positioning roller 43 maintains contact with the ring 1 without affecting the centering of the ring 1; a position sensor is installed on the movable bracket 42, which is used to measure the position of the movable bracket 42 on the linear slide rail 41; a mounting shaft 421 is provided at the upper end of the movable bracket 42; one end of the measuring ball 44 is connected to the movable bracket 42 through the mounting shaft 421, and the other end contacts the upper surface of the ring 1 under the action of gravity; an angle sensor is provided on the mounting shaft 421, which is used to measure the relative angle between the measuring ball 44 and the movable bracket 42, thereby obtaining the height of the ring 1.

[0033] Reference Figure 4The clamping and limiting mechanism 5 includes an inner limiting block 51, an outer limiting block 52, and a slotted slide rail 53. The inner limiting block 51 and the outer limiting block 52 are mounted on the slotted slide rail 53. The ring 1 is clamped between the inner limiting block 51 and the outer limiting block 52. The inner limiting block 51 and the outer limiting block 52 are connected by bolts to achieve clamping and limiting of the ring 1. The upper end of the inner limiting block 51 is connected to the upper end of the outer limiting block 52 by bolts, and the lower end of the inner limiting block 51 is connected to the lower end of the outer limiting block 52 by bolts.

[0034] The outer contour of the inner limiting block 51 is a box-shaped bracket with a right-angled triangle, and the right-angled side that contacts the ring 1 is an arc surface. The upper end of the inner limiting block 51 is provided with an upper bolt through hole 511. The outer contour of the outer limiting block 52 is a box-shaped bracket with a right-angled triangle, and the right-angled side that contacts the ring 1 is a plane. The upper end of the outer limiting block 52 is provided with an upper bolt through hole. The upper bolt through hole 511 of the inner limiting block 51 and the upper bolt through hole of the outer limiting block 52 are connected by bolts.

[0035] The inner limit block 51 has connecting blocks on both sides of the lower end of the right angle side, and each connecting block has a lower bolt through hole 512. The outer limit block 52 has connecting blocks on both sides of the lower end of the right angle side, and each connecting block has a lower bolt through hole. The lower bolt through hole 512 of the inner limit block 51 and the lower bolt through hole on the same side of the outer limit block 52 are connected by bolts.

[0036] The lower end of the inner limit block 51 is provided with a sliding limit block 513. The sliding limit block 513 can drive the inner limit block 51 to slide on the slot slide rail 53. The sliding limit block 513 is movably connected to the slot slide rail 53 to adjust the position to adapt to rings of different diameters.

[0037] The inner limit block 51 has fastening blocks on both sides of its lower part. The fastening blocks have side bolt through holes 514. The tightness between the inner limit block 51 and the slot slide rail 53 can be adjusted by tightening the bolts on the fastening blocks.

[0038] Reference Figure 5 , Figure 6 , Figure 7 The thrust slider mechanism 6 includes a hydraulic push rod 61, a slider connecting rod 62, an actuating slider 63, an indexing slider 64, a slider pin 65, and a heavy-duty slide rail 66.

[0039] One end of the hydraulic push rod 61 is connected to the central base 2, and the other end is connected to the slider connecting rod 62; the hydraulic push rod 61 has a built-in displacement sensor; by replacing the slider connecting rod 62, it can adapt to ring parts of different diameter grades; the slider connecting rod 62 is connected to the indexing slider 64 through a connecting pin; the indexing slider 64 is wedge-shaped, with its lower end contacting the heavy-duty slide rail 66 to form a sliding pair connection, and its upper end contacting the actuating slider 63; the upper end of the indexing slider 64 is provided with a guide groove 641 in its moving direction, and the guide groove 641 is provided with an external positioning through hole 642 perpendicular to its moving direction; the lower end of the actuating slider 63 has Guide block 631, with inner positioning through hole 632; guide block 631 of actuator slider 63 is located in guide groove 641 of indexing slider 64. When actuator slider 63 needs to apply radial load to ring 1, indexing slider 64 and actuator slider 63 are fixedly connected by slider pin 65 passing through outer positioning through hole 642 and inner positioning through hole 632; when actuator slider 63 needs to apply axial load to ring 1, slider pin 65 is removed, indexing slider 64 moves along heavy-duty guide rail 66, and indexing slider 64 causes actuator slider 63 to move upward through wedge surface.

[0040] When using the device of the present invention, the center of the ring 1 is first located and related measurements are performed. After the centering is completed, the device can be selectively entered into the straightening mode, the leveling mode, or the column straightening mode.

[0041] Ring centering stage

[0042] The thrust slider mechanism 6 and the measuring centering mechanism 4 work together to determine the initial position of the ring 1. When the ring 1 is placed, it first contacts the support roller mechanism 3. The thrust slider mechanism 6 initially positions the ring 1 according to the inner diameter of the target ring and a certain tolerance. The ring 1 rotates slowly under the action of the support roller mechanism 3. The measuring centering mechanism 4 measures the displacement change of the corresponding contact point. The thrust slider mechanism 6 further adjusts the position of the ring 1 according to the detection point data so that the displacement changes of the three sets of measuring centering mechanisms 4 are approximately the same.

[0043] Rounding mode

[0044] After the centering phase, the positions of each point of the ring 1 relative to the center of the circle have been detected. This embodiment addresses the roundness error in cases of overall ellipticity and local concavity. For the overall ellipticity, the two ends of the narrowest part of the ring 1 are transferred to the nearest clamping and limiting mechanism 5 and the thrust slider mechanism 6, respectively. The clamping and limiting mechanism 5 clamps the ring 1, and the thrust slider mechanism 6 performs work radially outward on the ring 1 to change the curvature of the ring 1 and achieve roundness correction. Similarly, for the local concavity, the concave part is transferred to the nearest thrust slider mechanism 6, and the clamping and limiting mechanisms 5 on both sides clamp the ring. The thrust slider mechanism 6 performs work radially outward on the ring 1 to change the curvature of the ring and achieve roundness correction.

[0045] Leveling mode

[0046] During the centering stage, the measuring centering mechanism 4 also measures the height of the end face of the ring 1. The lowest point of the end face is transferred to the nearest thrust slider mechanism 6. The clamping and limiting mechanisms 5 on both sides clamp the ring 1 to prevent the ring 1 from moving axially. The slider pin 65 in the thrust slider mechanism 6 is removed. The slider 63 performs work on the ring 1 axially upward to change the curvature of the end face of the ring and achieve leveling.

[0047] Column straightening mode

[0048] The cylindrical correction mode is mainly for cylindrical ring components, whose cylindrical errors include overall cylindrical error and local cylindrical error. This embodiment only addresses the correction of local cylindrical error. Local cylindrical error refers to the situation where the diameters at the upper and lower ends of a certain segment of the ring component are inconsistent. When the cylindricity of the ring component needs to be corrected, the operator needs to place the ring component with the concave end facing down, transfer it to the nearest clamping and limiting mechanism 5, and clamp it to restrict the torsion of the ring component. The thrust slider mechanisms 6 on both sides perform work on the ring component axially upward to change the curvature of the ring component's cylindrical surface to achieve cylindrical correction.

[0049] The device of this invention can comprehensively correct the roundness, flatness and cylindricity of rings, and it can handle a wide range of shape errors. It is highly versatile and has a simple structure. It also requires less power to correct large rings.

[0050] In this embodiment, a large ring refers to a ring with a diameter of 3m or more.

[0051] Those skilled in the art can make various modifications and variations to this invention. If such modifications and variations are within the scope of the claims of this invention and their equivalents, then such modifications and variations are also within the protection scope of this invention.

[0052] The contents not described in detail in the specification are prior art known to those skilled in the art.

Claims

1. A device for correcting the shape of large ring components, characterized in that: The device includes a ring, a central base, a support roller mechanism, a measuring and centering mechanism, a clamping and limiting mechanism, and a thrust slider mechanism. Each of these mechanisms comprises at least three sets. Multiple sets of support roller mechanisms are evenly distributed around the circumference of the ring to drive its rotation. Multiple sets of measuring and centering mechanisms are also evenly distributed around the circumference of the ring to locate its center position, measure its roundness error, and measure its end-face unevenness. Multiple sets of clamping and limiting mechanisms are evenly distributed around the circumference of the ring to restrict movement of its contact position. Multiple sets of thrust slider mechanisms are evenly distributed around the circumference of the ring. One end of each thrust slider mechanism is connected to the central base, and the other end contacts the ring. The thrust slider mechanism applies work radially outward to change the ring's curvature for rounding, and axially upward to change the end-face curvature for leveling or straightening.

2. The device for shape correction of large ring components as described in claim 1, characterized in that: The central base is a solid cylinder, and at least three sets of positioning brackets are evenly distributed on the side of the cylinder near the upper end. One end of the thrust slider mechanism is connected to the central base through the corresponding positioning bracket.

3. The device for shape correction of large ring components as described in claim 1, characterized in that: The measuring centering mechanism includes a linear slide rail, a movable support, a positioning roller, and a measuring ball. The movable support is mounted on the linear slide rail and can move linearly along it. The positioning roller is mounted on the movable support, and its cylindrical side contacts the outer circle of the ring. The movable support is equipped with a motor that provides power to the movable support, causing it to generate a continuous force toward the center of the ring, thereby keeping the positioning roller in contact with the ring. A position sensor is mounted on the movable support to measure its position on the linear slide rail. A mounting shaft is provided at the upper end of the movable support. One end of the measuring ball is connected to the movable support via the mounting shaft, and the other end contacts the upper surface of the ring under gravity. An angle sensor is provided on the mounting shaft to measure the relative angle between the measuring ball and the movable support.

4. The device for shape correction of large ring components as described in claim 3, characterized in that: The movable support contacts the linear slide rail through a friction wheel, and the motor drives the friction wheel to rotate, causing the movable support to generate a continuous force toward the center of the ring.

5. The device for shape correction of large ring components as described in claim 1, characterized in that: The clamping and limiting mechanism includes an inner limiting block, an outer limiting block, and a slotted slide rail; the inner limiting block and the outer limiting block are disposed on the slotted slide rail, and the ring is clamped between the inner limiting block and the outer limiting block. The inner limiting block and the outer limiting block are connected by bolts to achieve clamping and limiting of the ring.

6. The device for shape correction of large ring components as described in claim 5, characterized in that: The upper end of the inner limiting block is connected to the upper end of the outer limiting block by bolts, and the lower end of the inner limiting block is connected to the lower end of the outer limiting block by bolts.

7. The apparatus for shape correction of large ring components as described in claim 6, characterized in that: The outer contour of the inner limiting block is a box-shaped bracket with a right-angled triangle, and the right-angled side in contact with the ring is an arc surface. The upper end of the inner limiting block is provided with an upper bolt through hole. The outer contour of the outer limiting block is a box-shaped bracket with a right-angled triangle, and the right-angled side in contact with the ring is a plane. The upper end of the outer limiting block is provided with an upper bolt through hole. The upper bolt through holes of the inner limiting block and the outer limiting block are connected by bolts.

8. The apparatus for shape correction of large ring components as described in claim 5, characterized in that: The lower end of the inner limiting block is provided with a sliding limiting block, which can drive the inner limiting block to slide on the slot slide rail. The sliding limiting block is movably connected to the slot slide rail to adjust the position to adapt to rings of different diameters.

9. The apparatus for shape correction of large ring components as described in claim 5, characterized in that: The inner limit block is provided with fastening blocks on both sides of its lower part. The fastening blocks have side bolt through holes. The tightness between the inner limit block and the slot slide rail can be adjusted by tightening the bolts on the fastening blocks.

10. The apparatus for shape correction of large ring components as described in claim 1, characterized in that: The thrust-slider mechanism includes a hydraulic push rod, a slider connecting rod, an actuating slider, a indexing slider, a slider pin, and a heavy-duty slide rail. One end of the hydraulic push rod is connected to the central base, and the other end is connected to the slider connecting rod. The slider connecting rod is connected to the indexing slider via a connecting pin. The indexing slider is wedge-shaped, with its lower end contacting the heavy-duty slide rail to form a sliding pair connection, and its upper end contacting the actuating slider. The upper end of the indexing slider has a guide groove in its moving direction, and the guide groove has an outer positioning through hole perpendicular to its moving direction. The lower end of the actuating slider has a guide block, and the guide block has an inner positioning through hole. The guide block of the actuating slider is located in the guide groove of the indexing slider. When the actuating slider needs to apply a radial load to the ring, the indexing slider and the actuating slider are fixedly connected by a slider pin passing through the outer positioning through hole and the inner positioning through hole. When the actuating slider needs to apply an axial load to the ring, the slider pin is removed, the indexing slider moves along the heavy-duty guide rail, and the indexing slider moves the actuating slider upward through the wedge-shaped surface.

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