Flange multi-station drilling automatic centering positioning fixture

Abstract

The utility model discloses a flange plate multistation drilling automatic centering positioning fixture, including support and clamping seat, and the equal interval of support top is installed with multiple sets of clamping seat, and the rotatable installation of clamping seat inside has the runner, and the runner is along the circle center and is surrounded and is opened with three sets of arc holes, and the equal interval of clamping seat side wall is surrounded and is opened with three sets of perforation, and the movable installation of perforation inside has telescopic column, and the installation of arc hole inside has movable column, and movable column and telescopic column are fixedly connected through the connecting frame, and the fixed mounting of clamping block has outside telescopic column, and the fixed mounting of runner bottom has the driven sprocket, and the fixed mounting of support side wall has the support, and the fixed mounting of servo motor has support top, and the installation of drive sprocket has support bottom. The utility model can realize multistation synchronous drive through the transmission system of sprocket and chain, and the automatic centering positioning is completed with the cooperation of runner and arc hole structure, improves the processing efficiency and precision, and can be compatible with different specifications flange plate.

Description

Technical Field

[0001] This utility model relates to the field of flange processing technology, and in particular to an automatic centering and positioning fixture for multi-station drilling of flanges. Background Technology

[0002] In the field of mechanical manufacturing, flanges are key basic components for pipe connections and equipment component assembly. Their processing quality directly affects the sealing and stability of the entire system. Drilling is one of the core links in flange manufacturing, which requires ensuring the accuracy of hole position and the accuracy of flange center positioning. As industrial production develops towards high efficiency and automation, multi-station simultaneous processing has become an important means to improve flange drilling efficiency, which puts forward higher requirements for the performance of positioning fixtures.

[0003] Currently, traditional flange drilling and positioning fixtures mainly have the following problems:

[0004] Firstly, the synchronization of multi-station fixtures is poor. Most of them adopt independent drive or simple mechanical linkage, which makes it difficult to ensure that each station completes the positioning of the flange at the same time and synchronously. This results in the inability to fully utilize the processing efficiency of multi-station fixtures, and even causes the accumulation of processing errors due to asynchronous positioning.

[0005] Secondly, the centering and positioning accuracy is insufficient. Some fixtures rely on manual adjustment or simple mechanical limiting structures, which cannot achieve precise positioning of the flange center. In particular, for flanges of different specifications, it is difficult to meet the requirements of high-precision drilling.

[0006] Third, the clamping efficiency is low. The clamping structure of traditional clamps is cumbersome to operate. When changing flanges of different specifications, it is necessary to frequently adjust the clamping parameters or replace the clamping parts, which is time-consuming and labor-intensive, increasing production costs.

[0007] Therefore, how to provide an automatic centering and positioning fixture for multi-station drilling of flanges is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0008] One objective of this invention is to provide an automatic centering and positioning fixture for multi-station drilling of flanges. This invention can effectively solve the problems of poor synchronization of multi-station fixtures, insufficient centering and positioning accuracy, low clamping efficiency and poor versatility of traditional fixtures.

[0009] An automatic centering and positioning fixture for multi-station drilling of flanges according to an embodiment of the present invention includes a support and a clamping seat. Multiple sets of clamping seats are equidistantly installed on the top of the support. A rotating wheel is rotatably installed inside each clamping seat. Three sets of arc-shaped holes are circumferentially formed around the center of each rotating wheel. Three sets of through holes are equidistantly formed around the sidewall of the clamping seat. A telescopic column is movably installed within each through hole. A movable column is installed within each arc-shaped hole. The movable column and the telescopic column are fixedly connected by a connecting frame. A clamping block is fixedly installed at the outer end of each telescopic column. A rotating shaft is fixedly installed at the bottom of the rotating wheel. A driven sprocket is fixedly installed at the bottom of the rotating shaft. A bracket is fixedly installed on the sidewall of the support. A servo motor is fixedly installed on the top of the bracket. A drive sprocket is installed at the bottom of the bracket, and the output shaft of the servo motor is drive-connected to the drive sprocket. The drive sprocket is connected to each set of driven sprockets via a chain drive.

[0010] Furthermore, the clamping seat and the rotating wheel are rotatably connected by a bearing, the inner ring of the bearing is fixedly connected to the outer circumference of the rotating wheel, and the outer ring of the bearing is fixedly connected to the inner wall of the clamping seat.

[0011] Furthermore, the three sets of arc-shaped holes are distributed around the center of the rotating wheel at equal angles of 120°, and the arc of each set of arc-shaped holes ranges from 30° to 60°.

[0012] Furthermore, the connecting frame is a C-shaped support structure, with one end fixedly connected to the movable column perpendicularly and the other end fixedly connected to the telescopic column perpendicularly, and the axes of the movable column and the telescopic column are perpendicular to each other.

[0013] Furthermore, the inner side of the clamping block is provided with an anti-slip rubber pad, and the surface of the anti-slip rubber pad is provided with a grid-like anti-slip pattern.

[0014] Furthermore, the rotating shaft, the rotating wheel, and the driven sprocket are all fixed by key connection.

[0015] Furthermore, the bracket includes a vertical plate fixed to the side wall of the support and a mounting plate horizontally arranged at the top and bottom of the vertical plate. The servo motor is fixedly mounted on the top mounting plate, and the drive sprocket is rotatably mounted on the bottom mounting plate via bearings.

[0016] Furthermore, the chain is a roller chain, the ratio of the number of teeth of the drive sprocket to the number of driven sprockets is 1:1, and the number of teeth of each group of driven sprockets is the same.

[0017] Furthermore, mounting bases are symmetrically fixed on both sides of the bottom of the support. The mounting bases are rectangular plate structures with mounting holes for connecting external equipment through them on both sides.

[0018] Furthermore, a base plate is fixedly installed at the bottom of the support, and a groove matching the shape of the bottom of the base plate is provided on the upper surface of the base plate. The support is embedded in the groove and can be detachably connected to the base plate by bolts.

[0019] The beneficial effects of this utility model are:

[0020] 1. In this utility model, multiple sets of clamping seats are equidistantly arranged on the top of the support. With the transmission system of sprockets and chains driven by servo motors, the rotating wheels of the multi-station clamping seats can be rotated synchronously. This ensures that the clamping blocks of each station move synchronously closer to or further away from the center of the flange. Multiple flanges can be automatically aligned and positioned in one clamping operation, which greatly improves efficiency compared to single-station fixtures. Furthermore, the servo motor is fixed by the bracket, and the driving sprocket and the driven sprocket are rigidly connected by a chain, avoiding the slippage problem of traditional belt drives and ensuring the consistency of multi-station movement. This is suitable for the synchronous control requirements of high-precision drilling.

[0021] 2. In this utility model, the three sets of arc-shaped holes inside the rotating wheel are distributed at 120° angles with the center as the center. The circular motion of the rotating wheel is converted into the linear motion of the three sets of telescopic columns through the C-shaped connecting frame, so that the clamping block approaches the center of the flange synchronously from three directions, realizing the precise positioning of the geometric center, greatly reducing the centering error, meeting the positioning requirements of high-precision drilling, and the arc design of the arc-shaped holes allows the clamping block to automatically adjust the clamping position according to the flange diameter, which is compatible with flanges of different specifications, eliminating the need for frequent clamping changes and improving the versatility of the equipment. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of an automatic centering and positioning fixture for multi-station drilling of flanges proposed in this utility model.

[0024] Figure 2 This is a side view of the automatic centering and positioning fixture for multi-station drilling of flanges proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the bottom plate opening structure of an automatic centering and positioning fixture for multi-station drilling of flanges proposed in this utility model.

[0026] Figure 4 This is a schematic diagram of the internal structure of the clamping seat of an automatic centering and positioning fixture for multi-station drilling of flanges proposed in this utility model.

[0027] In the diagram: 1. Support; 2. Clamping seat; 3. Mounting seat; 4. Mounting hole; 5. Bracket; 6. Servo motor; 7. Drive sprocket; 8. Driven sprocket; 9. Chain; 10. Wheel; 11. Shaft; 12. Arc-shaped hole; 13. Connecting frame; 14. Movable column; 15. Telescopic column; 16. Clamping block; 17. Through hole; 18. Base plate. Detailed Implementation

[0028] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0029] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] like Figures 1-4As shown, this utility model discloses an automatic centering and positioning fixture for multi-station drilling of flanges, including a support 1 and a clamping seat 2. Multiple sets of clamping seats 2 are equidistantly installed on the top of the support 1. A rotating wheel 10 is rotatably installed inside each clamping seat 2. Three sets of arc-shaped holes 12 are formed around the center of each rotating wheel 10. Three sets of through holes 17 are equidistantly formed around the sidewall of the clamping seat 2. Telescopic columns 15 are movably installed within the through holes 17. Movable columns 14 are installed within the arc-shaped holes 12. The movable columns 14 and the telescopic columns... 15 is fixedly connected by a connecting frame 13. A clamping block 16 is fixedly installed on the outer end of the telescopic column 15. A rotating shaft 11 is fixedly installed on the bottom of the rotating wheel 10. A driven sprocket 8 is fixedly installed on the bottom of the rotating shaft 11. A bracket 5 is fixedly installed on the side wall of the support 1. A servo motor 6 is fixedly installed on the top of the bracket 5. A drive sprocket 7 is installed on the bottom of the bracket 5. The output shaft of the servo motor 6 is connected to the drive sprocket 7. The drive sprocket 7 is connected to each group of driven sprockets 8 through a chain 9.

[0033] This application discloses an automatic centering and positioning fixture for multi-station drilling of flanges. During use, the flange is placed at the center of each set of clamping seats 2. The servo motor 6 is started, and its output shaft drives the drive sprocket 7 to rotate. The drive sprocket 7, through a chain 9, drives each set of driven sprockets 8 to rotate synchronously. The driven sprockets 8, through a rotating shaft 11, drive the rotating wheel 10 to rotate within the clamping seat 2. When the rotating wheel 10 rotates, the movable column 14 within the arc-shaped hole 12 slides within the arc-shaped hole 12 as the rotating wheel 10 rotates, and through the connecting frame 13, drives the telescopic column 15 to perform linear telescopic movement within the through hole 17. Since the three sets of arc-shaped holes 12 are distributed at 120° equal angles around the center of the rotating wheel 10, when the rotating wheel 10 rotates, the three sets of telescopic columns 15 will perform synchronous linear telescopic movement, causing the clamping block 16 to move synchronously away from the center of the flange, thereby achieving automatic centering and positioning of the flange.

[0034] When the clamping block 16 approaches and contacts the flange, the anti-slip rubber pad on the inner side of the clamping block 16 fits tightly against the flange surface. The grid-like anti-slip texture on the surface of the anti-slip rubber pad increases friction, ensuring that the flange does not shift during drilling. Since the number of teeth on each set of driven sprockets 8 is the same, and the tooth ratio between the driving sprocket 7 and the driven sprocket 8 is 1:1, each set of rotating wheels 10 can rotate synchronously, ensuring the consistency and stability of positioning the flange simultaneously at multiple stations.

[0035] As a preferred example of this application, the clamping seat 2 and the rotating wheel 10 are rotatably connected by a bearing. The inner ring of the bearing is fixedly connected to the outer circumference of the rotating wheel 10, and the outer ring of the bearing is fixedly connected to the inner wall of the clamping seat 2. This arrangement makes the rotation of the rotating wheel 10 within the clamping seat 2 smoother, reduces frictional resistance, and improves the service life and working efficiency of the clamp.

[0036] As a preferred example of this application, the three sets of arc-shaped holes 12 are distributed at equal angles of 120° around the center of the rotating wheel 10, and the arc range of each set of arc-shaped holes 12 is 30°-60°. This arrangement allows the telescopic stroke of the telescopic column 15 to meet the positioning requirements of flanges of different sizes, while ensuring the stability and reliability of the clamping block 16 during the positioning process.

[0037] As a preferred example of this application, the connecting frame 13 is a C-shaped support structure, with one end fixedly connected vertically to the movable column 14 and the other end fixedly connected vertically to the telescopic column 15, and the axes of the movable column 14 and the telescopic column 15 are perpendicular to each other. This structural design allows the sliding of the movable column 14 within the arc-shaped hole 12 to be smoothly converted into the linear movement of the telescopic column 15 within the through hole 17, ensuring the smoothness and accuracy of the transmission.

[0038] As a preferred example of this application, the inner side of the clamping block 16 is provided with an anti-slip rubber pad, and the surface of the anti-slip rubber pad is provided with a grid-like anti-slip texture. The anti-slip rubber pad not only increases the friction between the clamping block 16 and the flange, preventing the flange from sliding during drilling, but also avoids damage to the flange surface caused by the clamping block 16, thus protecting the appearance quality of the flange.

[0039] As a preferred example of this application, the rotating shaft 11, the rotating wheel 10, and the driven sprocket 8 are all fixed by a key connection. The key connection can ensure the synchronous rotation between the rotating shaft 11, the rotating wheel 10, and the driven sprocket 8, transmit a larger torque, and ensure the reliability of power transmission.

[0040] As a preferred example of this application, the bracket 5 includes a vertical plate fixed to the side wall of the support 1 and mounting plates horizontally disposed at the top and bottom of the vertical plate. The servo motor 6 is fixedly mounted on the top mounting plate, and the drive sprocket 7 is rotatably mounted on the bottom mounting plate via bearings. This structural design makes the installation of the servo motor 6 and the drive sprocket 7 more stable, ensuring the stability of power transmission.

[0041] As a preferred example of this application, the chain 9 is a roller chain, and the tooth ratio of the drive sprocket 7 to the driven sprocket 8 is 1:1, and the number of teeth of each group of driven sprockets 8 is the same. Roller chains have advantages such as high transmission efficiency, strong load-bearing capacity, and reliable operation, and can ensure that each group of driven sprockets 8 rotates synchronously, realizing simultaneous positioning of the flange at multiple workstations.

[0042] As a preferred example of this application, mounting seats 3 are symmetrically fixed on both sides of the bottom of the support 1. The mounting seats 3 are rectangular plate structures with mounting holes 4 through-holes on both sides for connecting external equipment. The mounting seats 3 and mounting holes 4 allow for convenient installation of the fixture on drilling equipment, improving the fixture's ease of installation and versatility.

[0043] As a preferred example of this application, a base plate 18 is fixedly installed at the bottom of the support 1. The upper surface of the base plate 18 is provided with a groove that matches the shape of the bottom of the support 1. The support 1 is embedded in the groove and can be detachably connected to the base plate 18 by bolts. This arrangement makes the connection between the support 1 and the base plate 18 more stable, and at the same time facilitates the disassembly and maintenance of the fixture.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-station automatic centering and positioning fixture for drilling flanges, characterized in that, The device includes a support (1) and a clamping seat (2). Multiple clamping seats (2) are equidistantly mounted on the top of the support (1). A rotating wheel (10) is rotatably mounted inside each clamping seat (2). Three sets of arc-shaped holes (12) are circumferentially formed around the center of each rotating wheel (10). Three sets of through holes (17) are equidistantly formed around the sidewall of the clamping seat (2). Telescopic columns (15) are movably mounted within each through hole (17). Movable columns (14) are installed within each arc-shaped hole (12). The movable columns (14) and telescopic columns (15) are fixedly connected by a connecting frame (13). A clamping block (16) is fixedly installed on the outer end of the telescopic column (15). A rotating shaft (11) is fixedly installed on the bottom of the rotating wheel (10). A driven sprocket (8) is fixedly installed on the bottom of the rotating shaft (11). A bracket (5) is fixedly installed on the side wall of the support (1). A servo motor (6) is fixedly installed on the top of the bracket (5). A drive sprocket (7) is installed on the bottom of the bracket (5). The output shaft of the servo motor (6) is connected to the drive sprocket (7) through a transmission. The drive sprocket (7) is connected to each group of driven sprockets (8) through a chain (9).

2. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The clamping seat (2) and the rotating wheel (10) are rotatably connected by a bearing. The inner ring of the bearing is fixedly connected to the outer circumference of the rotating wheel (10), and the outer ring of the bearing is fixedly connected to the inner wall of the clamping seat (2).

3. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The three sets of arc-shaped holes (12) are distributed around the center of the rotating wheel (10) at an equal angle of 120°, and the arc range of each set of arc-shaped holes (12) is 30°-60°.

4. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The connecting frame (13) is a C-shaped support structure. One end of it is vertically fixed to the movable column (14), and the other end is vertically fixed to the telescopic column (15). The axes of the movable column (14) and the telescopic column (15) are perpendicular to each other.

5. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The inner side of the clamp (16) is provided with an anti-slip rubber pad, and the surface of the anti-slip rubber pad is provided with a grid-like anti-slip pattern.

6. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The rotating shaft (11), the rotating wheel (10), and the driven sprocket (8) are all fixed by key connection.

7. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The bracket (5) includes a vertical plate fixed to the side wall of the support (1) and a mounting plate horizontally set at the top and bottom of the vertical plate. The servo motor (6) is fixedly mounted on the top mounting plate, and the drive sprocket (7) is rotatably mounted on the bottom mounting plate through a bearing.

8. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The chain (9) is a roller chain, and the ratio of the number of teeth of the drive sprocket (7) and the driven sprocket (8) is 1:1, and the number of teeth of each group of driven sprockets (8) is the same.

9. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The support (1) has mounting seats (3) symmetrically fixed on both sides of its bottom. The mounting seats (3) are rectangular plate structures with mounting holes (4) for connecting external equipment through them on both sides.

10. The automatic centering and positioning fixture for multi-station drilling of flanges according to claim 1, characterized in that, The support (1) has a base plate (18) fixedly installed at its bottom. The upper surface of the base plate (18) is provided with a groove that matches the shape of the bottom of the support (1). The support (1) is embedded in the groove and can be detachably connected to the base plate (18) by bolts.

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