Positioning and overturning device for machining large workpieces

Abstract

The application belongs to the technical field of mechanical manufacturing, and provides a positioning and overturning device for machining of large workpieces, which comprises a workbench for placing workpieces to be machined; support frames which are detachably connected on both sides of the workpieces, a connecting line of the centers of the two support frames being a center axis of the workpieces, coaxial first support columns being connected at the centers of the support frames, and a plurality of second support columns being uniformly arranged at intervals on the outer periphery of the support frames; a positioning mechanism for placing the first support columns and the second support columns, the center axes of the first support columns and the center axes of the second support columns on the positioning mechanism being on the same horizontal plane; and a rotating mechanism for driving the support frames to rotate and thereby driving the workpieces to rotate.The application has the advantages that: through the cooperation of the support frames and the positioning mechanism, the support and positioning of the workpieces after being placed are realized, the level of the upper end surface of the workpieces after being placed is ensured, and the machining precision is improved; and through the rotating mechanism, the overturning of the workpieces is conveniently realized, and the operation is convenient.

Description

Technical Field

[0001] This application belongs to the field of mechanical manufacturing technology, specifically relating to a positioning and flipping device for processing large workpieces. Background Technology

[0002] In the processing of large workpieces, such as the large lifting platforms used for container cranes at docks, which weigh around two tons, milling requires placing the workpiece horizontally on a worktable to ensure machining accuracy. However, due to the large size and weight of the workpiece, accurate positioning cannot be guaranteed, thus compromising machining accuracy. Furthermore, the workpiece needs to be flipped during processing, which ordinary machining equipment cannot handle, requiring cranes or other methods. Even after flipping, there may be issues with origin drift, further compromising machining accuracy. Summary of the Invention

[0003] The purpose of this application is to provide a positioning and flipping device for processing large workpieces. By using a support frame and a positioning mechanism in combination, the device can support and position the workpiece after it is placed, ensuring that the upper surface of the workpiece is horizontal and improving processing accuracy. Furthermore, by using a rotating mechanism and a driving mechanism in combination, the workpiece can be easily flipped without the need for cranes or other equipment, thus improving work efficiency and safety. Moreover, during the flipping process, the coordinated work of the positioning mechanism and the driving mechanism can ensure the stability of the workpiece after flipping, ensuring that the upper surface of the workpiece is placed horizontally after rotation, reducing the possibility of origin drift, and further ensuring processing accuracy.

[0004] The technical solution adopted by this application to solve the above-mentioned technical problems is as follows: a positioning and flipping device for processing large workpieces is proposed, including: a worktable for placing the workpiece to be processed; A detachable support frame is connected to both sides of the workpiece. The line connecting the centers of the two support frames is the central axis of the workpiece. A first support column is coaxially connected to the center of the support frame away from the workpiece. A number of second support columns are evenly distributed on the outer periphery of the support frame away from the workpiece. A positioning mechanism is provided on both sides of the workpiece. The positioning mechanism includes a first positioning block and a second positioning block. The first positioning block is used to place the first support column, and the second positioning block is used to place the second support column. A rotating mechanism is provided on the worktable. The rotating mechanism is connected to the end of the first support column away from the support frame. The rotating mechanism is used to drive the first support column to rotate, thereby driving the workpiece to rotate. A driving mechanism is provided on the worktable. The driving mechanism includes a connecting block connected to the lower end of the second positioning block. When the rotating mechanism drives the workpiece to rotate, the driving mechanism drives the second positioning block to move closer to the worktable to avoid interference of the second positioning block during the workpiece rotation. When the rotating mechanism completes its rotation, the driving mechanism drives the second positioning block to support itself under the second support column.

[0005] With the above technical features, during use, the support frame is connected to both ends of the workpiece, so that the line connecting the centers of the support frames is the central axis of the workpiece. The workpiece is then hoisted and placed on the worktable, with the first and second support columns on the support frame positioned on the positioning mechanism. This ensures that the central axes of the first and second support columns are on the same horizontal plane, guaranteeing the horizontality and stability of the workpiece's upper surface after placement, and ensuring the accuracy of milling the upper surface of the workpiece. Furthermore, when the workpiece needs to be rotated during processing, the rotation mechanism drives the workpiece to rotate, while the drive mechanism simultaneously moves the positioning mechanism closer to the worktable, preventing interference between the positioning mechanism and the workpiece. After the rotation mechanism completes its rotation, the drive mechanism operates again, moving the positioning mechanism below the first and second support columns to provide support for the workpiece, ensuring its stability after rotation and guaranteeing the horizontal placement of the workpiece's upper surface after rotation.

[0006] Therefore, the positioning and flipping device of this application, through the combined use of the support frame and the positioning mechanism, achieves support and positioning of the workpiece after placement, ensuring the horizontality of the upper surface of the workpiece, improving processing accuracy, and avoiding the problem of inaccurate positioning caused by the large size and weight of the workpiece. Furthermore, through the cooperation of the rotation mechanism and the drive mechanism, this application can easily achieve workpiece flipping without the need for cranes or other equipment, improving work efficiency and safety. Moreover, during the flipping process, the coordinated work of the positioning mechanism and the drive mechanism ensures the stability of the workpiece after flipping, guaranteeing the horizontality of the upper surface of the workpiece after rotation, reducing the possibility of origin drift, and further ensuring processing accuracy.

[0007] Preferably, the first positioning block is provided with a first positioning groove, and the first support column is placed in the first positioning groove; The second positioning block has several blocks, which are set on the worktable and located on one or both sides of the first positioning block. The driving mechanism drives the second positioning block to move up and down relative to the worktable. The second positioning block is provided with a second positioning groove. When the second positioning block moves to the support position, the second support column is placed in the second positioning groove. The central axis of the second support column placed in the second positioning groove is on the same horizontal plane as the central axis of the first support column placed in the first positioning groove.

[0008] With the above-mentioned technical features, the positioning mechanism of this application ensures that when the workpiece is placed on the worktable by the support frames on both sides, the first support column is placed in the first positioning groove of the first positioning block, and the second support column is placed in the second positioning groove of the second positioning block. The central axis of the second support column placed in the second positioning groove is on the same horizontal plane as the central axis of the first support column placed in the first positioning groove. This ensures that the upper surface of the workpiece is horizontal after placement, guarantees the accuracy of milling the upper surface, that is, ensures the stability of the workpiece in the horizontal direction, and thus guarantees the machining accuracy. When the workpiece is flipped, because the axis of the first support column is located on the central axis of the workpiece, the rotating mechanism drives the first support column to rotate, which in turn drives the support frame to rotate and in turn drives the workpiece to rotate. When the support frame rotates, it will drive the second support column to rotate circumferentially. At this time, the second positioning block will move to the appropriate position to avoid interference between the second positioning block and the second support column during the workpiece rotation. When the workpiece rotation is completed, the second positioning groove of the second positioning block is aligned with the second support column, which allows the second support column to be placed in the second positioning groove. This ensures that the central axis of the second support column placed in the second positioning groove after rotation is on the same horizontal plane as the central axis of the first support column placed in the first positioning groove, ensuring that the workpiece is placed horizontally and stably after rotation.

[0009] Preferably, the driving mechanism includes a drive motor, a drive screw, and a connecting block. The drive motor is mounted on the worktable, the drive screw is connected to the output end of the drive motor, the connecting block is threadedly connected to the drive screw, and the second positioning block is connected to the upper end of the connecting block.

[0010] With the aforementioned technical features, when the drive motor rotates, the drive screw also rotates, causing the threaded connecting block to move up and down along the drive screw, which in turn causes the second positioning block to move up and down accordingly. When the rotating mechanism rotates the workpiece, the drive motor causes the second positioning block to move downwards to avoid the workpiece, and then the drive motor causes the second positioning block to move upwards. When the rotating mechanism finishes rotating, the second positioning groove of the second positioning block is exactly aligned with the second support column, allowing the second support column to be placed in the second positioning groove, and ensuring that the central axis of the second support column placed in the second positioning groove after rotation is on the same horizontal plane as the central axis of the first support column placed in the first positioning groove. By using a motor drive and controlling the rotation angle and speed of the drive motor, the moving distance and speed of the second positioning block can be precisely controlled, thereby achieving precise positioning of the second positioning block and ensuring that the moving position of the second positioning block after rotation is exactly below the second support column.

[0011] Preferably, the rotating mechanism includes a rotary motor, a driving wheel, a driven wheel, a rotating shaft, and a transition block. The rotary motor is mounted on the worktable, the driving wheel is connected to the output shaft of the rotary motor, the driven wheel is meshed with the driving wheel, the rotating shaft is coaxially connected to the driven wheel, the transition block is connected to one end of the rotating shaft, and the transition block is connected to the end of the first support column away from the support frame.

[0012] With the aforementioned technical features, the rotary motor rotates, the driving wheel begins to rotate, and the driven wheel meshes with the driving wheel. Therefore, when the driving wheel rotates, the driven wheel also rotates. The rotation of the driven wheel drives the rotating shaft to rotate, which in turn drives the transition block and the first support column connected to it to rotate, thereby causing the support frame and the workpiece to rotate. This application uses a motor drive. Through precise control of the rotary motor, precise control of the rotating mechanism can be achieved, including rotation speed and rotation angle, ensuring that after each workpiece rotation, the second support columns located on both sides of the first support column on the support frame are on the same horizontal line as the central axis of the first support frame.

[0013] Preferably, a bearing is sleeved on the outer periphery of the end of the first support column away from the support frame, and when the first support column is placed in the first positioning groove, the bearing is located in the first positioning groove.

[0014] With the aforementioned technical features, when the rotating mechanism is activated, it drives the first support column to rotate. Due to the presence of the bearing, the friction of the first support column during rotation is greatly reduced, resulting in a smoother and more efficient rotation process. When the support frame is connected to the workpiece, the bearing is simply fitted onto the end of the first support column furthest from the support frame, and during hoisting, the bearing is placed in the first positioning groove to achieve a positioning function.

[0015] Preferably, the workbench is further provided with a moving mechanism, the moving mechanism comprising: The first moving component includes a first connecting block, a moving screw, a moving motor, and a first mounting plate. The first connecting block is connected to one side of the worktable. The lower end of the worktable is provided with a first slider extending along the width direction of the workpiece. The first mounting plate is disposed below the worktable. The first mounting plate is provided with a first slide rail corresponding to the first slider. The first slider is slidably connected to the first slide rail. The moving screw is rotatably connected to the output end of the moving motor. The moving screw is threadedly connected to the first connecting block. The second moving component includes a second connecting block, a moving cylinder, and a second mounting plate. The second connecting block is connected to the first mounting plate, and the moving motor is connected to the second connecting block. The lower end of the first mounting plate is provided with a second slider extending along the length direction of the workpiece. The second mounting plate is provided with a second slide rail, and the second slider is slidably connected to the second slide rail. The moving cylinder is connected to the second mounting plate, and the telescopic rod of the moving cylinder is connected to one side of the second connecting block.

[0016] By utilizing the aforementioned technical features, and through the method of using a moving motor to drive a moving lead screw and a moving hydraulic cylinder to extend and retract, precise control of the movement of the worktable in the width and length directions of the workpiece can be achieved, thus meeting the requirements of high-precision machining.

[0017] Preferably, the workpiece is further provided with abutting elements on both sides. The abutting elements include abutting blocks, abutting rods, and abutting bolts. The abutting blocks are connected to the worktable. One end of the abutting rod abuts against the side wall of the workpiece, and the other end of the abutting rod extends out of the abutting block. The abutting bolts are threaded to the outer periphery of the abutting rods and are pressed against the abutting blocks.

[0018] With the aforementioned technical features, when a workpiece is placed on the worktable and prepared for rotation, the operator first adjusts the length of the clamping rod according to the size and shape of the workpiece, ensuring it fits snugly against the workpiece's side wall. Then, rotating the clamping bolt moves it along the thread direction of the clamping rod, applying pressure and making it fit even more tightly against the workpiece's side wall. This inward pressure prevents the workpiece from moving axially during rotation. Through the design of the clamping component, the workpiece maintains a stable position during rotation, avoiding machining errors caused by workpiece movement and thus improving machining accuracy.

[0019] Preferably, the device further includes several clamping components for being disposed around the workpiece. Each clamping component includes a clamping block and a clamping rod. One end of the clamping block is inserted into a hole on the workpiece, and the other end of the clamping block is inserted into the worktable. One end of the clamping rod is inserted into the clamping block, and the other end of the clamping rod is inserted into the worktable. A clamping bolt is threaded onto the outer circumference of one end of the clamping rod, and the clamping bolt abuts against the upper end of the clamping block.

[0020] Through the aforementioned technical features, one end of the clamping block is inserted into a specific hole on the workpiece, while the other end is inserted into the worktable, ensuring a secure connection between the clamping block, the workpiece, and the worktable. Then, one end of the clamping rod is inserted into the clamping block, and the other end is also inserted into the worktable, forming a single unit that firmly fixes the workpiece to the worktable. To further enhance the stability of the fixation, a clamping bolt is threaded onto the outer circumference of one end of the clamping rod. When it is necessary to fix the workpiece, the operator can rotate the clamping bolt, causing it to move downwards and abut against the upper end of the clamping block. As the clamping bolt rotates and moves downwards, it gradually tightens the clamping block, further increasing the fixing force between the workpiece and the worktable. Through the design of the clamping components, the workpiece can be stably fixed on the worktable, avoiding machining errors caused by workpiece movement or vibration during processing, thus significantly improving machining accuracy. Furthermore, the stable fixation prevents workpiece movement or vibration during processing, reducing potential damage to the equipment and the workpiece itself caused by workpiece movement.

[0021] Preferably, it further includes support members for being disposed on both sides of the bottom of the workpiece. The support members include a support base, and a support screw is internally threaded onto the support base. One end of the support screw extends out of the support base to abut against the bottom of the workpiece, and a support bolt is sleeved on the support screw.

[0022] Through the aforementioned technical features, the support base provides a stable platform, while the support screw is used to adjust the support height and fix the workpiece. By rotating the support screw, it can be moved up and down within the support base, thereby adjusting the height at which it abuts against the bottom of the workpiece. Once the support screw is adjusted to the appropriate height and firmly against the bottom of the workpiece, the support bolt is used to lock the position of the support screw, preventing it from moving during operation. Therefore, by adjusting the height of the support screw and fixing it with the support bolt, the support component provides stable and reliable support for the workpiece, helping to improve machining accuracy and product quality, while protecting the workpiece and equipment. Preferably, the outer side of the support frame is evenly spaced with a plurality of threaded holes, and a hook is inserted into the threaded hole. One end of the hook extends out of the threaded hole, and the other end of the hook is hooked into the side wall of the workpiece. A fixing bolt is threadedly connected to the hook outside the threaded hole. The fixing bolt is used to press the support frame tightly to the side wall of the workpiece. The support frame is provided with a lifting ring for lifting the workpiece.

[0023] With the above-mentioned technical features, when connecting the support frame to the workpiece, one end of the hook extends out of the threaded hole, while the other end is used to hook into the side wall of the workpiece. Then, the fixing bolt is rotated to press it against the side wall of the workpiece, thereby fixing the position of the hook and the support frame. After processing is completed, the fixing bolt is rotated to remove the hook, thus detaching the support frame from the workpiece. The installation and disassembly process is simple and quick. The lifting ring on the support frame facilitates the lifting of the workpiece, allowing for easy lifting and handling without damaging the workpiece during the lifting process.

[0024] In summary, this application has the following beneficial effects: (1) This application achieves support and positioning of the workpiece after placement by using the support frame and positioning mechanism together, ensuring that the upper surface of the workpiece is horizontal after placement, improving processing accuracy, and avoiding the problem of inaccurate positioning caused by the large size and weight of the workpiece. (2) This application can easily achieve workpiece flipping by the cooperation of the rotating mechanism and the driving mechanism, without the need for cranes or other equipment, thus improving work efficiency and safety; (3) In the flipping process, the coordinated work of the positioning mechanism and the driving mechanism can ensure the stability of the workpiece after flipping, ensure that the upper surface of the workpiece is placed horizontally after rotation, reduce the possibility of origin drift, and further ensure the processing accuracy. Attached Figure Description

[0025] Figure 1 A schematic diagram of the workpiece and support frame according to one embodiment of this application; Figure 2 A schematic diagram of the support frame for one embodiment of this application; Figure 3 This is a partial structural diagram of one embodiment of this application. Figure 1 ; Figure 4 This is a partial structural diagram of one embodiment of this application. Figure 2 ; Figure 5 This is a partial structural diagram of one embodiment of this application. Figure 3 ; Figure 6 This is a schematic diagram of the overall structure of one implementation scheme of this application.

[0026] In the diagram, 1. Workbench; 2. Support frame; 21. First support column; 211. Bearing; 22. Second support column; 23. Threaded hole; 24. Lifting ring; 3. Positioning mechanism; 31. First positioning block; 311. First positioning groove; 32. Second positioning block; 321. Second positioning groove; 4. Rotating mechanism; 41. Rotary motor; 411. First mounting block; 42. Drive wheel; 43. Driven wheel; 44. Rotating shaft; 45. Transition block; 5. Drive mechanism; 51. Drive motor; 511. Second mounting block; 52. Drive screw; 53. Connecting block; 6. Moving mechanism; 61. First moving component; 611. First connecting block; 612. Moving screw; 613. Moving motor Machine; 614, First mounting plate; 615, First slider; 616, First slide rail; 617, First sensor; 618, First sensing block; 62, Second moving assembly; 621, Second connecting block; 622, Moving cylinder; 623, Second mounting plate; 624, Second slider; 625, Second slide rail; 626, Second sensor; 627, Second sensing block; 7, Clamping component; 71, Clamping block; 72, Clamping rod; 73, Clamping bolt; 8, Pressing component; 81, Pressing block; 82, Pressing rod; 83, Pressing bolt; 9, Support component; 91, Support base; 92, Support screw; 93, Support bolt; 10, Hook; 101, Fixing bolt; 11, Workpiece. Detailed Implementation

[0027] The following are specific embodiments of this application, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments.

[0028] like Figure 1 , Figure 2 As shown, this application discloses a positioning and flipping device for processing large workpieces, including: a support frame 2 that is detachably connected to both ends of the workpiece 11.

[0029] The support frame 2 is detachably connected to both ends of the workpiece 11. The line connecting the centers of the two support frames 2 is the central axis of the workpiece 11. A first support column 21 is coaxially connected at the center of the side of the support frame 2 away from the workpiece 11. Several second support columns 22 are evenly distributed at intervals on the outer periphery of the side of the support frame 2 away from the workpiece 11. The first support column 21 and the second support column 22 provide positioning support for the workpiece 11 when it is placed.

[0030] The support frame 2 is also connected to a lifting ring 24, which facilitates the hoisting of the workpiece 11 and avoids damage to the workpiece 11.

[0031] In this application, the support frame 2 is a circle with a first support column 21 connected at the center. Four second support columns 22 are connected around the circumference of the support frame 2. The support frame 2 can also take other shapes, such as elliptical or square.

[0032] In this application, when the support frame 2 is connected to the workpiece 11, one end of the hook 10 extends out of the threaded hole 23, and the other end is used to hook into the side wall of the workpiece 11. Then, the fixing bolt 101 is rotated to press it against the side wall of the workpiece 11, thereby fixing the position of the hook 10 and the support frame 2. After processing is completed, the fixing bolt 101 is rotated to remove the hook 10, thus detaching the support frame 2 from the workpiece 11. The installation and disassembly process is simple and quick. The support frame 2 serves as a tool to assist in the movement and positioning of the workpiece 11. The hook 10 of this application enables convenient connection and disassembly, which is easy to operate and will not damage the workpiece 11. Other detachable connection methods between the support frame 2 and the workpiece 11 are also possible, such as threaded connection, plug-in connection, etc.

[0033] like Figure 3 As shown, when the workpiece 11 is placed on the workbench 1 by hoisting, a positioning mechanism 3 is provided in this application to ensure the stability and accuracy of the placement of the workpiece 11.

[0034] The positioning mechanism 3 includes a first positioning block 31 and a second positioning block 32. The first positioning block 31 has a first positioning groove 311, and the second positioning block 32 has a second positioning groove 321. The first positioning groove 311 and the second positioning groove 321 are at the same height. When the workpiece 11 is hoisted and lowered, the first support column 21 on the support frame 2 on both sides of the workpiece 11 is placed in the first positioning groove 311, and the second support column 22 is located in the second positioning groove 321. The central axis of the second support column 22 in the second positioning groove 321 is on the same horizontal plane as the central axis of the first support column 21 placed in the first positioning groove 311. This ensures that the upper surface of the workpiece 11 is horizontal after it is placed, thus ensuring the machining accuracy when milling and drilling the upper surface.

[0035] In this application, a first positioning block 31 and a second positioning block 32 are provided on both sides of the workpiece 11, and the second positioning blocks 32 are respectively located on both sides of the width of the workpiece 11 to ensure the stability of the workpiece 11 and prevent it from shifting left or right. Alternatively, four second positioning blocks 32 can be provided as needed, and placed on both sides of the first positioning block 31 respectively.

[0036] In this application, the workpiece 11 is hoisted onto the worktable 1. The bottom surface of the workpiece 11 is not placed directly on the worktable 1 because it has not yet undergone finishing, and the flatness of the bottom surface cannot be guaranteed. Therefore, the workpiece 11 is placed on the positioning mechanism 3, with its lower end suspended in the air. To prevent the workpiece 11 from moving or vibrating during processing, clamping elements 8 are provided around the workpiece 11 after it is placed on the positioning mechanism 3.

[0037] like Figure 4 As shown, the clamping component 8 in this application includes a clamping block 81 and a clamping rod 82. One end of the clamping block 81 is inserted into a hole on the workpiece 11, and the other end is inserted into the worktable 1. One end of the clamping rod 82 is inserted into the clamping block 81, and the other end is inserted into the worktable 1. A clamping bolt 83 is threaded onto the outer circumference of one end of the clamping rod 82. By rotating the clamping bolt 83, it moves downward and abuts against the upper end of the clamping block 81. As the clamping bolt 83 rotates and moves downward, it gradually clamps the clamping block 81, thereby further increasing the fixing force between the workpiece 11 and the worktable 1, so that the workpiece 11 can be stably fixed on the worktable 1, avoiding machining errors caused by the movement or vibration of the workpiece 11 during processing, thus significantly improving machining accuracy.

[0038] In order to provide stable and reliable support for the workpiece 11, which helps to improve machining accuracy and product quality, and at the same time protect the workpiece 11 and the equipment, several support members 9 are provided on both sides of the lower end of the workpiece 11 in this application.

[0039] The support member 9 in this application includes a support base 91, with a support screw 92 internally threaded onto the support base 91. One end of the support screw 92 extends out of the support base 91 and abuts against the bottom of the workpiece 11. A support bolt 93 is sleeved on the support screw 92. By rotating the support screw 92, it can move up and down within the support base 91, thereby adjusting the height at which it abuts against the bottom of the workpiece 11. When the support screw 92 is adjusted to a suitable height and abuts against the bottom of the workpiece 11, the support bolt 93 is used to lock the position of the support screw 92, preventing it from moving during operation, thus stably supporting the lower end of the workpiece 11.

[0040] When the upper surface of workpiece 11 is processed and other sides of workpiece 11 need to be processed, workpiece 11 needs to be rotated. In order to meet the need for rotation during the processing of large workpiece 11, this application also provides a rotating mechanism 4.

[0041] like Figure 4 , Figure 5 As shown, the rotating mechanism 4 includes a rotating motor 41, which is connected to the worktable 1 via a first mounting block 411. The output shaft of the rotating motor 41 is connected to a drive wheel 42, which drives the drive wheel 42 to rotate. The first mounting block 411 has a rotating hole, and a rotating shaft 44 is rotatably connected inside the rotating hole. One end of the rotating shaft 44 extends out of the rotating hole and is connected to a driven wheel 43, which meshes with the drive wheel 42. The other end of the rotating shaft 44 extends out of the rotating hole and is connected to a transition block 45, which is connected to the end of the first support column 21 away from the support frame 2.

[0042] When the rotary motor 41 rotates, the driving wheel 42 starts to rotate. The driven wheel 43 is meshed with the driving wheel 42. Therefore, when the driving wheel 42 rotates, the driven wheel 43 will also rotate. The rotation of the driven wheel 43 will drive the rotating shaft 44 to rotate together. The rotation of the rotating shaft 44 will drive the transition block 45 and the first support column 21 connected to it to rotate, thereby driving the support frame 2 and the workpiece 11 to rotate.

[0043] This application uses a motor drive. Through the precise control of the rotary motor 41, the rotation mechanism 4 can be precisely controlled, including the rotation speed and rotation angle, to ensure that after each rotation of the workpiece 11, the central axis of the second support column 22 located on both sides of the first support column 21 on the support frame 2 is on the same horizontal line as the central axis of the first support frame 2.

[0044] When the rotating mechanism 4 rotates the workpiece 11, the first support column 21 on the workpiece 11 rotates in the first positioning groove 311. In order to reduce the friction of the first support column 21 during rotation, a bearing 211 is sleeved on the outer periphery of the end of the first support column 21 away from the support frame 2. When the first support column 21 is placed in the first positioning groove 311, the bearing 211 is located in the first positioning groove 311, and the first support column 21 rotates in the bearing 211, making the rotation process more stable and efficient.

[0045] When the rotating mechanism 4 rotates the workpiece 11, the second support column 22 on the workpiece 11 rotates circumferentially. To avoid interference from the second positioning block 32 during the rotation of the second support column 22, a driving mechanism 5 is also provided in this application. The driving mechanism 5 includes a driving motor 51, which is connected to the worktable 1 via a second mounting block. The output section of the driving motor 51 is connected to a driving screw 52, ​​and a connecting block 53 is threaded onto the driving screw 52. The connecting block 53 is connected to the lower end of the second positioning block 32. When the driving motor 51 rotates, the driving screw 52 also rotates, thereby causing the connecting block 53, which is threaded onto it, to move up and down along the driving screw 52, ​​and consequently causing the second positioning block 32 to move up and down as well.

[0046] When the rotating mechanism 4 rotates the workpiece 11, the drive motor 51 drives the second positioning block 32 to move downwards to avoid the workpiece 11. Then, the drive motor 51 drives the second positioning block 32 to move upwards. When the rotating mechanism 4 finishes rotating, the second positioning groove 321 of the second positioning block 32 is aligned with the second support column 22, allowing the second support column 22 to be placed in the second positioning groove 321. This ensures that the central axis of the second support column 22 placed in the second positioning groove 321 after rotation is on the same horizontal plane as the central axis of the first support column 21 placed in the first positioning groove 311, ensuring that the upper surface of the rotated workpiece 11 is exactly horizontal. Therefore, this application, through the coordinated work of the positioning mechanism 3 and the drive mechanism 5, can ensure the stability of the workpiece 11 after flipping, guaranteeing the horizontal placement of the upper surface of the rotated workpiece 11, reducing the possibility of origin drift, and further ensuring processing accuracy.

[0047] The drive mechanism 5 in this application is driven by a motor. By controlling the rotation angle and speed of the drive motor 51, the moving distance and speed of the second positioning block 32 can be precisely controlled, thereby achieving precise positioning of the second positioning block 32 and ensuring that the moving position of the second positioning block 32 after rotation is exactly below the second support column 22.

[0048] In this application, to prevent the workpiece 11 from moving axially during rotation, clamping elements 7 are provided on both sides of the workpiece 11. Each clamping element 7 includes a clamping block 71, a clamping rod 72, and a clamping bolt 73. The clamping block 71 is connected to the worktable 1. One end of the clamping rod 72 abuts against the side wall of the workpiece 11, and the other end extends beyond the clamping block 71. The clamping bolt 73 is threadedly connected to the outer circumference of the clamping rod 72. By rotating the clamping bolt 73, it can be moved along the thread direction of the clamping rod 72, thereby generating pressure on the clamping rod 72, making it more tightly pressed against the side wall of the workpiece 11, thus generating an inward pressure that prevents the workpiece 11 from moving axially during rotation. Through the design of the clamping elements 7, the workpiece 11 can maintain a stable position during rotation, avoiding machining errors caused by workpiece 11 movement, thereby improving machining accuracy.

[0049] like Figure 6 As shown, in order to facilitate the movement of the workpiece 11 during the processing, a moving mechanism 6 is also provided below the worktable 1 in this application. The moving mechanism 6 in this application includes a first moving component 61 and a second moving component 62. The first moving component 61 is used to move the workpiece 11 along the width direction of the workpiece 11, and the second moving component 62 is used to move the workpiece 11 along the length direction of the workpiece 11.

[0050] The first moving assembly 61 includes a first connecting block 611, a moving lead screw 612, a moving motor 613, and a first mounting plate 614. The first connecting block 611 is connected to one side of the worktable 1. The lower end of the worktable 1 is provided with a first slider 615 extending along the width direction of the workpiece 11. The first mounting plate 614 is located below the worktable 1, and a first slide rail 616 is provided on the first mounting plate 614 corresponding to the first slider 615. The first slider 615 is slidably connected to the first slide rail 616. The output end of the moving motor 613 is rotatably connected to the moving lead screw 612, and the moving lead screw 612 is threadedly connected to the first connecting block 611. The moving motor 613 drives the moving lead screw 612 to move the first mounting plate 614 back and forth along the width direction of the workpiece 11, thereby driving the worktable 1 and the workpiece 11 on the worktable 1 to move back and forth along its width direction to meet the processing needs.

[0051] The second moving component 62 includes a second connecting block 621, a moving cylinder 622, and a second mounting plate 623. The second connecting block 621 is connected to the first mounting plate 614, and a moving motor 613 is connected to the second connecting block 621. The lower end of the first mounting plate 614 is provided with a second slider 624 extending along the length direction of the workpiece 11. The second mounting plate 623 is provided with a second slide rail 625, and the second slider 624 is slidably connected to the second slide rail 625. The moving cylinder 622 is connected to the second mounting plate 623, and the telescopic rod of the moving cylinder 622 is connected to one side of the second connecting block 621. The telescopic rod of the moving cylinder 622 extends and retracts, pushing the second connecting block 621 to slide along the second slide rail 625, thereby causing the first mounting plate 614 to slide back and forth along the second slide rail 625.

[0052] In order to control the position of the first moving component 61 along the width direction of the workpiece 11, two first sensors 617 are evenly distributed on the second mounting plate 623 along the width direction of the workpiece 11, and a first sensing block 618 is provided on the first connecting block 611. Through the cooperation of the first sensing block 618 and the first sensors 617, the movement position of the first moving component 61 is controlled.

[0053] In order to control the position of the second moving component 62 along the length of the workpiece 11, two second sensors 626 are evenly distributed on the second mounting plate 623 along the length of the workpiece 11, and a second sensing block 627 is provided on the second connecting block 621. The movement position of the second moving component 62 is controlled by the cooperation of the second sensing block 627 and the second sensors 626.

[0054] Working principle: In use, the support frame 2 is connected to both ends of the workpiece 11, so that the line connecting the centers of the support frame 2 is the central axis of the workpiece 11, and the bearing 211 is installed at one end of the first support column 21. Then, the workpiece 11 is hoisted and placed on the worktable 1, and the first support column 21 and the second support column 22 on the support frame 2 are positioned on the positioning mechanism 3, ensuring that the central axis of the first support column 21 and the central axis of the second support column 22 are on the same horizontal plane, ensuring the horizontality and stability of the upper end surface of the workpiece 11 after placement, and ensuring the accuracy of milling the upper end surface of the workpiece 11. After placement, the clamping part 8 and the support part 9 are fixed in the preset position on the workpiece 11, and the workpiece 11 is moved to the required position by the first moving component 61 and the second moving component 62 of the moving mechanism 6. Then, the upper end surface of the workpiece 11 is milled and drilled.

[0055] After the upper surface is machined, when other surfaces of workpiece 11 need to be machined, before rotating workpiece 11, the clamping parts 8 and 9 should be released from contact with workpiece 11, and the clamping parts 7 should be pressed against both sides of workpiece 11. Then, the rotating mechanism 4 drives the workpiece 11 to rotate, usually by 90°, to process the side of the workpiece 11. When the rotating mechanism 4 rotates, the driving mechanism 5 simultaneously drives the second positioning block 32 to move closer to the worktable 1 to avoid interference between the second positioning block 32 and the workpiece 11. After the rotating mechanism 4 completes its rotation, the driving mechanism 5 works again to align the second positioning groove 321 of the second positioning block 32 with the second support column 22, thereby allowing the second support column 22 to be placed in the second positioning groove 321. This ensures that the central axis of the second support column 22 placed in the second positioning groove 321 after rotation is on the same horizontal plane as the central axis of the first support column 21 placed in the first positioning groove 311, ensuring that the upper surface of the workpiece 11 is horizontal after rotation and ensuring the stability of the workpiece 11. Then, the clamping member 8 and the support member 9 are fixed in the preset positions on the workpiece 11 for processing.

[0056] The specific embodiments described herein are merely illustrative examples. Those skilled in the art to which this application pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined in this application.

Claims

1. A positioning and flipping device for processing large workpieces, characterized in that, include: Workbench (1), used to place workpieces to be processed; The support frame (2) is detachably connected to both sides of the workpiece. The line connecting the centers of the two support frames (2) is the central axis of the workpiece. The first support column (21) is coaxially connected to the center of the side of the support frame (2) away from the workpiece. Several second support columns (22) are evenly distributed on the outer periphery of the side of the support frame (2) away from the workpiece. The positioning mechanism (3) is set on both sides of the workpiece. The positioning mechanism (3) includes a first positioning block (31) and a second positioning block (32). The first positioning block (31) is used to place the first support column (21), and the second positioning block (32) is used to place the second support column (22). A rotating mechanism (4) is provided on the worktable (1). The rotating mechanism (4) is connected to the end of the first support column (21) away from the support frame (2). The rotating mechanism (4) is used to drive the first support column (21) to rotate, thereby driving the workpiece to rotate. A drive mechanism (5) is provided on the worktable (1). The drive mechanism (5) includes a connecting block (53), which is connected to the lower end of the second positioning block (32). When the rotating mechanism (4) drives the workpiece to rotate, the drive mechanism (5) drives the second positioning block (32) to move closer to the worktable (1) to avoid interference of the second positioning block (32) with the workpiece during rotation. When the rotating mechanism (4) has finished rotating, the drive mechanism (5) drives the second positioning block (32) to be supported under the second support column (22).

2. The positioning and flipping device for processing large workpieces according to claim 1, characterized in that, The first positioning block (31) is provided with a first positioning groove (311), and the first support column (21) is placed in the first positioning groove (311); The second positioning block (32) has several blocks, which are set on the worktable (1) and located on one or both sides of the first positioning block (31). The driving mechanism (5) drives the second positioning block (32) to move up and down relative to the worktable (1). The second positioning block (32) is provided with a second positioning groove (321). When the second positioning block (32) moves to the support position, the second support column (22) is placed in the second positioning groove (321). The central axis of the second support column (22) placed in the second positioning groove (321) is on the same horizontal plane as the central axis of the first support column (21) placed in the first positioning groove (311).

3. The positioning and flipping device for processing large workpieces according to claim 2, characterized in that, The drive mechanism (5) includes a drive motor (51), a drive screw (52), and a connecting block (53). The drive motor (51) is mounted on the worktable (1). The drive screw (52) is connected to the output end of the drive motor (51). The connecting block (53) is threadedly connected to the drive screw (52). The second positioning block (32) is connected to the upper end of the connecting block (53).

4. The positioning and flipping device for processing large workpieces according to claim 2, characterized in that, The rotating mechanism (4) includes a rotary motor (41), a driving wheel (42), a driven wheel (43), a rotating shaft (44), and a transition block (45). The rotary motor (41) is mounted on the worktable (1). The driving wheel (42) is connected to the output shaft of the rotary motor (41). The driven wheel (43) is meshed with the driving wheel (42). The rotating shaft (44) is coaxially connected with the driven wheel (43). The transition block (45) is connected to one end of the rotating shaft (44). The transition block (45) is connected to the end of the first support column (21) away from the support frame (2).

5. A positioning and flipping device for processing large workpieces according to claim 4, characterized in that, A bearing (211) is fitted around the outer periphery of the end of the first support column (21) away from the support frame (2). When the first support column (21) is placed in the first positioning groove (311), the bearing (211) is located in the first positioning groove (311).

6. The positioning and flipping device for processing large workpieces according to claim 1, characterized in that, The workbench (1) is also provided with a moving mechanism (6), which includes: The first moving component (61) includes a first connecting block (611), a moving screw (612), a moving motor (613), and a first mounting plate (614). The first connecting block (611) is connected to one side of the worktable (1). The lower end of the worktable (1) is provided with a first slider (615) extending along the width direction of the workpiece. The first mounting plate (614) is located below the worktable (1). The first mounting plate (614) is provided with a first slide rail (616) corresponding to the first slider (615). The first slider (615) is slidably connected to the first slide rail (616). The moving screw (612) is rotatably connected to the output end of the moving motor (613). The moving screw (612) is threadedly connected to the first connecting block (611). The second moving component (62) includes a second connecting block (621), a moving cylinder (622), and a second mounting plate (623). The second connecting block (621) is connected to the first mounting plate (614), and the moving motor (613) is connected to the second connecting block (621). The lower end of the first mounting plate (614) is provided with a second slider (624) extending along the length direction of the workpiece. The second mounting plate (623) is provided with a second slide rail (625), and the second slider (624) is slidably connected to the second slide rail (625). The moving cylinder (622) is connected to the second mounting plate (623), and the telescopic rod of the moving cylinder (622) is connected to one side of the second connecting block (621).

7. A positioning and flipping device for processing large workpieces according to claim 1, characterized in that, It also includes abutment members (7) provided on both sides of the workpiece. The abutment members (7) include abutment blocks (71), abutment rods (72) and abutment bolts (73). The abutment blocks (71) are connected to the worktable (1). One end of the abutment rods (72) abuts against the side wall of the workpiece, and the other end of the abutment rods (72) extends out of the abutment blocks (71). The abutment bolts (73) are threaded to the outer periphery of the abutment rods (72) and are pressed against the abutment blocks (71).

8. A positioning and flipping device for processing large workpieces according to claim 1, characterized in that, It also includes several clamping components (8) for being set around the workpiece. Each clamping component (8) includes a clamping block (81) and a clamping rod (82). One end of the clamping block (81) is inserted into a hole on the workpiece, and the other end of the clamping block (81) is inserted into the worktable (1). One end of the clamping rod (82) is inserted into the clamping block (81), and the other end of the clamping rod (82) is inserted into the worktable (1). A clamping bolt (83) is threaded onto the outer circumference of one end of the clamping rod (82), and the clamping bolt (83) abuts against the upper end of the clamping block (81).

9. A positioning and flipping device for processing large workpieces according to claim 1, characterized in that, It also includes support members (9) for being set on both sides of the bottom of the workpiece. The support member (9) includes a support base (91). The support base (91) is internally threaded with a support screw (92). One end of the support screw (92) extends out of the support base (91) to abut against the bottom of the workpiece. The support screw (92) is sleeved with a support bolt (93).

10. The positioning and flipping device for processing large workpieces according to claim 1, characterized in that, The support frame (2) has several threaded holes (23) evenly spaced on its outer side. A hook (10) is inserted into each threaded hole (23). One end of the hook (10) extends out of the threaded hole (23), and the other end of the hook (10) is hooked into the side wall of the workpiece. A fixing bolt (101) is threadedly connected to the hook (10) outside the threaded hole (23). The fixing bolt (101) is used to press the support frame (2) tightly onto the side wall of the workpiece. The support frame (2) is provided with a lifting ring (24) for lifting the workpiece.

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