High-precision flange plate turning positioning tooling

Abstract

The application relates to the technical field of flange machining, and discloses a high-precision flange disc turning machining positioning tool, a supporting frame, a supporting column and a supporting table are arranged on the workbench, a rotating ring plate and a first clamping assembly are arranged in the supporting frame, a second clamping assembly is arranged on the supporting column, the first clamping assembly comprises a first clamping plate, the second clamping assembly comprises a second clamping plate, an adjusting assembly is arranged on the rotating ring plate, and the rotating ring plate is rotated to convert the clamping positions of the first clamping plate and the second clamping plate on the flange disc through the adjusting plate, the first clamping plate is constrained by the concentric arc-shaped first moving groove, the first clamping plate cannot be loosened from the flange disc in advance in the clamping switching process, the flange outer ring is always positioned before the second clamping plate completes inner ring clamping, the flange offset is limited throughout the process, the flange always maintains a concentric state in the twice clamping replacement process, clamping misplacement is avoided, and the turning size precision and the shape tolerance precision of the flange disc are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of flange processing technology, specifically to a high-precision flange turning and positioning fixture. Background Technology

[0002] In the field of mechanical manufacturing, flanges are an important connecting component and are widely used in various aspects of pipelines and mechanical equipment. Their machining accuracy directly affects the sealing performance, coaxiality, and overall equipment operation stability of subsequent assembly. In particular, during the turning process, it is necessary to strictly control key indicators such as end face flatness, inner and outer circle coaxiality, and surface roughness.

[0003] Common flange turning and positioning fixtures often employ a single clamping method, such as clamping from the outer ring side of the flange or tightening from the inner ring side. Flanges typically require comprehensive machining of the outer diameter, end face, and areas near the clamping location. When using a single clamping method, the clamping location itself becomes a machining interference zone, preventing this area from being turned in a single clamping operation. Multiple clamping operations introduce positioning errors, making it difficult to guarantee the form and position tolerances between two machining areas, thus affecting the overall machining accuracy of the flange and reducing production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision flange turning and positioning fixture to solve the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a high-precision flange turning and positioning fixture, including a worktable, a support frame, a support column, and a support platform. The support frame is provided with a rotating ring plate and a first clamping assembly, and the support column is provided with a second clamping assembly. The first clamping assembly includes a first clamping plate, and the second clamping assembly includes a second clamping plate. The rotating ring plate is provided with an adjustment assembly, which includes an adjustment plate. When the rotating ring plate rotates, the adjustment plate changes the clamping position of the first clamping plate and the second clamping plate on the flange.

[0006] Preferably, a toothed ring plate is provided on the outer ring side of the rotating ring plate, and a rotary motor is also provided on the worktable. The rotary motor is provided with a first gear, which meshes with the toothed ring plate.

[0007] Preferably, the rotating ring plate is provided with multiple sets of moving blocks, a first fixed block and a second fixed block, a moving plate is provided on one side of the moving block, the moving plate slides in contact with the top of the first fixed block, and the horizontal height of the second fixed block is higher than that of the first fixed block.

[0008] Preferably, the adjusting plate is fixedly connected to the other side of the moving block, and when the adjusting plate is not in operation, it is in active contact with another set of second fixed blocks.

[0009] Preferably, the movable plate has an air outlet, the support frame is provided with a connecting pipe, and multiple connecting pipes are provided with air outlet pipes. The air inlet end of the connecting pipe is located above the movable plate and above the moving path of the air outlet.

[0010] Preferably, the adjusting plate has a first moving groove and a second moving groove, the first moving groove has a moving column, the moving column is fixedly connected to the first clamping plate, and the support frame has a retraction groove that matches the first clamping plate.

[0011] Preferably, the first moving groove and the second moving groove are interconnected, both the first moving groove and the second moving groove are arc-shaped, and the first moving groove is concentric with the support column.

[0012] Preferably, the rotating ring plate has a first adjustment groove, a first adjustment column is provided in the first adjustment groove, and a pushing column is provided on the first adjustment column, the pushing column passing through the support platform and extending into the support column.

[0013] Preferably, the support column is provided with a rotating column, the rotating column is provided with a second gear and a rotating plate, and the pushing column is connected to the second gear through a toothed block.

[0014] Preferably, the support column is provided with a clamping box, the rotating plate is located in the clamping box, the rotating plate has a second adjustment groove, the clamping box is provided with a second adjustment column, the second adjustment column is located in the second adjustment groove, and the second adjustment column is fixedly connected to the second clamping plate. Beneficial effects

[0015] Compared with the prior art, the present invention provides a high-precision flange turning and positioning fixture, which has the following advantages: 1. In this invention, the first clamping plate is constrained by the concentric arc-shaped first moving groove. During the clamping and switching process, the first clamping plate will not loosen the flange in advance. Before the second clamping plate completes the inner ring clamping, the outer ring of the flange is always positioned, and the flange offset is restricted throughout the process. The flange is always kept in a concentric state during the two clamping and changing processes, eliminating clamping misalignment and greatly improving the turning dimensional accuracy and geometric tolerance accuracy of the flange.

[0016] 2. In this invention, by rotating the rotating ring plate, the outer ring of the flange is first clamped by the first clamping plate for processing, and then the second clamping plate clamps the inner ring. After completion, the first clamping plate is released. The sequence of outer to inner avoids the steps of stopping the machine or realigning when changing the clamping point of the traditional tooling, and realizes the automatic conversion of the clamping position.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0018] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is a front sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a top view of the rotating ring plate and the toothed ring plate of the present invention; Figure 5 This is a bottom view of the rotating ring plate of the present invention; Figure 6 This is a schematic diagram of the adjustment component of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the adjustment component of the present invention. Figure 2 ; Figure 8 This is a cross-sectional view of the support column and clamping box of the present invention; Figure 9 This is a working diagram of the second clamping plate of the present invention.

[0021] Explanation of reference numerals in the attached figures: In the diagram: 1. Workbench; 2. First gear; 3. Support frame; 4. Connecting pipe; 5. Air outlet pipe; 6. Clamping box; 7. Support column; 8. Support platform; 9. Rotating ring plate; 10. Retraction groove; 11. Adjusting plate; 12. First adjusting column; 13. Pushing column; 14. First clamping plate; 15. Gear ring plate; 16. Moving block; 17. Moving plate; 18. First fixed block; 19. Second fixed block; 20. First adjusting groove; 21. Moving column; 22. First moving groove; 23. Second moving groove; 24. Air outlet; 25. Rotating column; 26. Second gear; 27. Rotating plate; 28. Second adjusting groove; 29. ​​Second adjusting column; 30. Second clamping plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0023] Please see Figures 1-9 This invention provides a technical solution: a high-precision flange turning and positioning fixture, including a worktable 1, a support frame 3, a support column 7 and a support platform 8 on the worktable 1, a rotating ring plate 9 and a first clamping assembly in the support frame 3, a second clamping assembly on the support column 7, the first clamping assembly including a first clamping plate 14, the second clamping assembly including a second clamping plate 30, and an adjustment assembly on the rotating ring plate 9, including an adjustment plate 11. When the rotating ring plate 9 rotates, the clamping positions of the first clamping plate 14 and the second clamping plate 30 on the flange are changed through the adjustment plate 11.

[0024] In this embodiment, a toothed ring plate 15 is provided on the outer ring side of the rotating ring plate 9, and a rotary motor is also provided on the worktable 1. A first gear 2 is provided on the rotary motor, and the first gear 2 is meshed with the toothed ring plate 15.

[0025] The rotary motor and the first gear 2 can be replaced with a cylinder and a rack.

[0026] In this embodiment, the rotating ring plate 9 is provided with multiple sets of moving blocks 16, first fixed blocks 18, and second fixed blocks 19. The moving blocks 16 are fixedly installed on the rotating ring plate 9, while the first fixed blocks 18 and second fixed blocks 19 are in sliding contact with the upper surface of the rotating ring plate 9. The first fixed blocks 18 and second fixed blocks 19 are both fixedly installed on the support frame 3. At the same time, the moving blocks 16, first fixed blocks 18, and second fixed blocks 19 are arranged in sequence. A moving plate 17 is fixedly installed on the side of the moving block 16 near the first fixed block 18 in the same group. The moving plate 17 is in sliding contact with the top of the first fixed block 18. Furthermore, the horizontal height of the second fixed block 19 is higher than that of the first fixed block 18. When the moving block 16 moves toward the side of the first fixed block 18 in the same group, the moving block 16 will not only drive the moving plate 17 to slide on the first fixed block 18 and move closer to the second fixed block 19, but also squeeze the space between the moving block 16 and the first fixed block 18 in the same group when the moving block 16 moves, so that the gas in the space is squeezed. When the moving plate 17 continues to move, the vent 24 will be connected to the connecting pipe 4, and the gas squeezed in the space will be discharged from the air outlet pipe 5 through the connecting pipe 4, thereby blowing away the iron filings on the flange processing surface.

[0027] In this embodiment, the adjusting plate 11 is fixedly connected to the other side of the moving block 16, and the adjusting plate 11 is in active contact with another set of second fixed blocks 19 when it is not in operation.

[0028] In this embodiment, the movable plate 17 is provided with an air outlet 24, and a connecting pipe 4 is fixedly installed in the support frame 3. The upper end of the connecting pipe 4 extends out of the top of the support frame 3. At the same time, air outlet pipes 5 are fixedly installed at the air outlet ends of multiple connecting pipes 4, with the lower end located in the upper space of the rotating ring plate 9. The air inlet end of the connecting pipe 4 is located above the movable plate 17 and above the moving path of the air outlet 24. That is, the air outlet 24 will only be connected to the air inlet end of the connecting pipe 4 when the movable plate 17 moves a certain distance. Before the air outlet 24 is connected to the connecting pipe 4, no air blows out of the air outlet pipe 5.

[0029] In this embodiment, the adjusting plate 11 is provided with a first moving groove 22 and a second moving groove 23. A moving column 21 is movably installed in the first moving groove 22. The moving column 21 is fixedly connected to the bottom end of the first clamping plate 14. The support frame 3 is provided with a retraction groove 10 that matches the first clamping plate 14. The first clamping plate 14 is divided into a clamping part and a connecting part. The clamping part is located on the outside of the support frame 3 and is provided with a clamping arc that matches the outer ring side of the flange. The connecting part is located in the retraction groove 10 to ensure that the first clamping plate 14 always stays on the same straight line during the movement and to prevent deviation.

[0030] In this embodiment, the first moving groove 22 and the second moving groove 23 are interconnected. Both the first moving groove 22 and the second moving groove 23 are arc-shaped. The first moving groove 22 is concentric with the support column 7. That is, when the moving column 21 moves in the first moving groove 22, it will rotate synchronously with the rotating ring plate 9. That is, when the rotating ring plate 9 rotates, the moving column 21 is still in the first moving groove 22. The first clamping plate 14 still clamps the outside of the flange and will not be released before the second clamping plate 30 clamps the inside of the flange. This can prevent the flange from shifting before being clamped again and ensure that the flange is always in a concentric position during the two clamping changes.

[0031] The first clamping plate 14 and the second clamping plate 30 will not clamp the flange simultaneously. When the first clamping plate 14 clamps the flange, the turning tool will process other parts of the flange. After the other parts are processed, the second clamping plate 30 will clamp the flange. At this time, the first clamping plate 14 will separate from the flange, and the turning tool will process the clamping position of the first clamping plate 14.

[0032] In this embodiment, a first adjustment groove 20 is provided in the rotating ring plate 9, and a first adjustment column 12 is movably installed in the first adjustment groove 20. A push column 13 is fixedly installed on the first adjustment column 12. The push column 13 passes through the support platform 8 and extends into the support column 7. The first adjustment groove 20 adopts a combination of two arc segments. The first arc segment of the first adjustment groove 20 is not concentric or coaxial with the support column 7, while the second arc segment is concentric and coaxial with the support column 7. When the first adjustment groove 20 and the first adjustment column 12 are not in operation, the first adjustment column 12 is close to the toothed ring plate 15. When the rotating ring plate 9 rotates, the first adjustment groove 20 will drive the first adjustment column 12 to move laterally, that is, the first adjustment column 12 moves towards the support column 7 and begins to move away from the toothed ring plate 15. At the same time, it will drive the push column 13 to move laterally synchronously. The push column 13 will slide through the support column 7.

[0033] In this embodiment, a rotating column 25 is movably installed in the support column 7, a second gear 26 is fixedly installed on the outer side of the rotating column 25, and a rotating plate 27 is fixedly installed on the top of the rotating column 25. The pushing column 13 is connected to the second gear 26 through the tooth block part. When the pushing column 13 moves laterally, it will drive the rotating column 25 to rotate through the second gear 26, thereby driving the rotating plate 27 to rotate in the clamping box 6.

[0034] In this embodiment, a clamping box 6 is fixedly installed at the top of the support column 7, the rotating column 25 extends into the clamping box 6 synchronously, the rotating plate 27 is movably installed in the clamping box 6, the rotating plate 27 is provided with second adjustment grooves 28 at equal intervals, the second adjustment grooves 28 are not concentric or coaxial with the rotating plate 27, a second adjustment column 29 is movably installed in the clamping box 6, one end of the second adjustment column 29 is located in the second adjustment groove 28, and the second adjustment column 29 is fixedly connected to the second clamping plate 30.

[0035] The other end of the second adjusting column 29 is located in the inner wall of the clamping box 6 and can move laterally in the inner wall of the clamping box.

[0036] Before the flange is placed on the support platform 8, the moving column 21 is located in the middle of the second moving groove 23. At this time, neither the first clamping plate 14 nor the second clamping plate 30 is in contact with the flange.

[0037] The flange that has not yet been processed is placed on the support platform 8. The first gear 2 is driven to rotate by the operation of the rotary motor. When the first gear 2 rotates, it drives the rotating ring plate 9 to rotate through the gear ring plate 15. When the rotating ring plate 9 rotates, it drives the moving column 21 to move towards the support column 7 through the second moving groove 23 and the first moving groove 22. The moving column 21 drives the first clamping plate 14 to clamp the outer ring side of the flange. Moreover, during the rotation of the rotating ring plate 9, the first adjusting column 12 drives the rotating column 25 to rotate by pushing column 13, thereby moving the second clamping plate 30 and contacting the outside of the clamping box 6.

[0038] The working principle of this embodiment is as follows: When the flange on the support platform 8 is clamped by the first clamping plate 14, except when the clamping position of the first clamping plate 14 is not processed, the rotary motor works. The rotation of the rotary motor can drive the rotating ring plate 9 to rotate through the first gear 2 and the gear ring plate 15. When the rotating ring plate 9 rotates, it will drive the moving block 16 to move synchronously to the side of the first fixed block 18 in the same group. It will also drive the first adjusting column 12 to move laterally through the first adjusting groove 20. When the moving block 16 moves, it will drive the adjusting plate 11 and the moving plate 17 to move together. When the movement occurs, the moving column 21 will move through the first moving groove 22 and the second moving groove 23. When the moving column 21 moves in the first moving groove 22, the first clamping plate 14 still clamps the outer ring side of the flange. At the same time, as the first adjusting column 12 also moves laterally with the rotation of the rotating ring plate 9, it will drive the pushing column 13 to move into the supporting column 7. When the pushing column 13 moves, it will drive the rotating column 25 to rotate through the toothed block and the second gear 26. When the rotating column 25 rotates, it will drive the rotating plate 27 to rotate in the clamping box 6. When the rotating plate 27 rotates, it will drive the rotating column 25 to rotate through the first moving groove 22 and the second moving groove 23. The second adjusting column 29 moves laterally and extends outward through the second adjusting groove 28. When the second adjusting column 29 moves, it causes the second clamping plate 30 to clamp the inner ring side of the flange. When the second clamping plate 30 contacts the flange, the moving column 21 moves from the first moving groove 22 into the second moving groove 23. Although the first adjusting column 12 is in the first adjusting groove 20, the first adjusting groove 20 does not cause the first adjusting column 12 to move laterally at this time. Furthermore, the moving block 16 also causes the moving plate 17 to move, and at this time, the vent 24 on the moving plate 17... With the connecting pipe 4 connected, the gas in the space between the moving block 16 and the first fixed block 18 will enter the air outlet pipe 5 through the connecting pipe 4 and blow air onto the flange processing surface, causing the iron filings on the flange processing surface to be blown away. Moreover, as the moving column 21 moves in the second moving groove 23, the moving column 21 begins to move towards the toothed ring plate 15. At this time, the moving column 21 will drive the first clamping plate 14 to separate from the outer ring side of the flange until the moving column 21 can no longer move in the second moving groove 23, thus completing the change of clamping position between the first clamping assembly and the second clamping assembly.

[0039] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision flange turning and positioning fixture, comprising a worktable (1), characterized in that: The workbench (1) is provided with a support frame (3), a support column (7) and a support platform (8). The support frame (3) is provided with a rotating ring plate (9) and a first clamping assembly. The support column (7) is provided with a second clamping assembly. The first clamping assembly includes a first clamping plate (14), and the second clamping assembly includes a second clamping plate (30). The rotating ring plate (9) is provided with an adjustment assembly, which includes an adjustment plate (11). When the rotating ring plate (9) rotates, the adjustment plate (11) changes the clamping position of the first clamping plate (14) and the second clamping plate (30) on the flange. The adjustment plate (11) is provided with a first moving groove (22) and a second moving groove (23). A moving column (21) is provided in the first moving groove (22). The moving column (21) is fixedly connected to the first clamping plate (14). A retraction groove (10) matching the first clamping plate (14) is provided in the support frame (3). The first moving groove (22) and the second moving groove (23) are interconnected. Both the first moving groove (22) and the second moving groove (23) are arc-shaped. The first moving groove (22) is concentric with the support column (7). The rotating ring plate (9) is provided with a first adjustment groove (20), and a first adjustment column (12) is provided in the first adjustment groove (20). A push column (13) is provided on the first adjustment column (12), and the push column (13) passes through the support platform (8) and extends into the support column (7). The support column (7) is provided with a rotating column (25), and the rotating column (25) is provided with a second gear (26) and a rotating plate (27). The push column (13) is connected to the second gear (26) through a toothed block. A clamping box (6) is provided on the support column (7), and the rotating plate (27) is located in the clamping box (6). The rotating plate (27) has a second adjustment groove (28). A second adjustment column (29) is provided in the clamping box (6). The second adjustment column (29) is located in the second adjustment groove (28). The second adjustment column (29) is fixedly connected to the second clamping plate (30).

2. The high-precision flange turning and positioning fixture according to claim 1, characterized in that: A toothed ring plate (15) is provided on the outer ring side of the rotating ring plate (9), and a rotary motor is also provided on the worktable (1). A first gear (2) is provided on the rotary motor, and the first gear (2) meshes with the toothed ring plate (15).

3. The high-precision flange turning and positioning fixture according to claim 1, characterized in that: The rotating ring plate (9) is provided with multiple sets of moving blocks (16), a first fixed block (18) and a second fixed block (19). A moving plate (17) is provided on one side of the moving block (16). The moving plate (17) slides in contact with the top of the first fixed block (18), and the horizontal height of the second fixed block (19) is higher than that of the first fixed block (18).

4. The high-precision flange turning and positioning fixture according to claim 3, characterized in that: The adjusting plate (11) is fixedly connected to the other side of the moving block (16), and the adjusting plate (11) is in active contact with another set of second fixed blocks (19) when it is not in operation.

5. The high-precision flange turning and positioning fixture according to claim 3, characterized in that: The movable plate (17) has an air outlet (24), the support frame (3) has a connecting pipe (4), and multiple connecting pipes (4) have air outlet pipes (5). The air inlet of the connecting pipe (4) is located above the movable plate (17) and above the moving path of the air outlet (24).

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