Rotary supporting and positioning device for large shaft workpieces

Abstract

The utility model provides a rotary supporting and positioning device for large shaft workpieces, which relates to the technical field of shaft workpiece processing devices and comprises a base, a movable table and a rotating disc, a rotating mechanism is arranged in the movable table, a limit frame is arranged at the top of the rotating disc, sliders are symmetrically connected to two sides in the limit frame in a sliding manner, and the sliders are arranged on the base. A driving mechanism is arranged at the top of the limiting frame, and a clamping mechanism is arranged at the top of the sliding block; the hand wheel is rotated in the forward direction, the movable seat is close to the fixed seat, the two sets of clamping sticks are driven to be close to each other to clamp a large shaft workpiece, the large shaft workpiece is fixed to the movable table, the hand wheel can be rotated in the reverse direction to loosen the large shaft workpiece, and the large shaft workpiece can rotate automatically when rubbing against the clamping sticks. The friction force between the large shaft workpiece and the clamping rollers is reduced, then the machining position of the large shaft workpiece is adjusted to the center of the rotating disc, the sliding blocks are matched to drive the two clamping mechanisms to stop on the two sides of the machining position, and therefore the machining precision is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of shaft workpiece processing devices, and in particular to a rotary support and positioning device for large shaft workpieces. Background Technology

[0002] Large shafts are core components in mechanical manufacturing, typically exceeding 200mm in diameter and reaching several meters or even more than ten meters in length. They are widely used in heavy industries such as energy (steam turbine main shafts), shipbuilding (propeller shafts), and metallurgy (rolling mill rolls). Their materials are mostly high-strength alloy steel (such as 42CrMo4), and forging and tempering processes ensure fatigue strength (≥600MPa) and impact toughness (≥40J / cm²). 2 The key technical challenges lie in heat treatment deformation control (precision must reach IT6 level) and dynamic balance calibration (imbalance ≤ 0.5 g·mm / kg) to ensure stability during high-speed rotation;

[0003] In the process of mechanical repair and assembly, grinding and polishing of shaft workpieces is very common. Since most shaft workpieces are heavy and long, they are prone to roundness loss during grinding, which reduces the accuracy of the shaft and even scraps the workpiece, causing unnecessary losses. Therefore, this utility model proposes a rotary support positioning device for large shaft workpieces to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a rotary support and positioning device for large shaft-type workpieces, which solves the problem that roundness loss is very likely to occur during the grinding process in the prior art, resulting in a decrease in the accuracy of the shaft and even scrapping of the workpiece, causing unnecessary losses.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a rotary support and positioning device for large shaft-type workpieces, including a base, a movable platform and a rotating disk. The top of the base is provided with a lifting mechanism, and the top of the lifting mechanism is fixedly connected to the movable platform. The movable platform is provided with a rotating mechanism, and the top of the rotating mechanism is fixedly connected to the rotating disk. The top of the rotating disk is provided with a limiting frame, and sliders are symmetrically slidably connected to both sides inside the limiting frame. The top of the limiting frame is provided with a driving mechanism, and the top of the sliders is provided with a clamping mechanism.

[0006] A further improvement is made in that: the clamping mechanism includes a support frame, a fixed seat, a slide groove, a movable seat, clamping rods, and a one-way screw. The top of the slider is fixedly connected to the support frame, one end of the support frame is fixedly connected to the fixed seat, the support frame has a slide groove inside, the movable seat is slidably connected inside the slide groove, the one-way screw is rotatably connected inside the slide groove, one end of the one-way screw passes through the interior of the movable seat and is threadedly connected to it, and clamping rods are symmetrically hinged to both ends of the fixed seat and the slide groove.

[0007] A further improvement is that one end of the unidirectional lead screw passes through the interior of the support frame and is fixedly connected to a handwheel, and a rubber pad is fixedly connected to the outside of the clamping rod.

[0008] A further improvement is that the driving mechanism includes a bidirectional lead screw and a rotary motor, and the top of the limiting frame is rotatably connected to the bidirectional lead screw. The two ends of the bidirectional lead screw pass through the interior of the two sliders and are threadedly connected to them.

[0009] A further improvement is made in that: the rotating mechanism includes a rotating shaft, a first gear, a second gear, and a self-locking motor; the rotating shaft is rotatably connected inside the movable platform; the top end of the rotating shaft is fixedly connected to the bottom end of the rotating disk; the first gear is fixedly connected to the outside of the rotating shaft; the second gear is rotatably connected to one side inside the movable platform; and the self-locking motor is fixedly installed on one side of the bottom of the movable platform; the outer walls of the second gear and the first gear mesh with each other; and the output end of the self-locking motor is fixedly connected to the bottom of the second gear.

[0010] A further improvement is that both the rotary motor and the self-locking motor are covered with protective shells, and multiple anti-collision strips are fixedly connected to the outside of the protective shells. The anti-collision strips are rectangular in shape.

[0011] A further improvement is made in that: the lifting mechanism includes a bottom frame, a top frame, a strip groove, a hinge seat, a rotating shaft, a hydraulic cylinder, and a connecting arm. The bottom frame is fixedly connected to the top of the base, and the top frame is fixedly connected to the bottom of the movable platform. The strip groove is symmetrically arranged inside the bottom frame and the movable platform. The hinge seat is symmetrically arranged between the bottom frame and the movable platform. The hinge seat is an X-shaped structure composed of two rotating rods hinged together by a rotating shaft. One side of the hinge seat is slidably connected to the strip groove. A hydraulic cylinder is hinged to one side of the bottom frame. The output end of the hydraulic cylinder is fixedly connected to the connecting arm. One end of the connecting arm is fixedly connected to the outside of the rotating shaft.

[0012] The beneficial effects of this utility model are as follows: The handwheel can drive the one-way lead screw to rotate forward and backward inside the slide groove, while simultaneously driving the moving seat to move back and forth along the slide groove in a straight line. Both the fixed seat and the moving seat are rotatably mounted with clamping rods. When the handwheel is rotated forward, the moving seat moves closer to the fixed seat, driving the two sets of clamping rods to move closer to each other and clamp the large shaft workpiece, thus fixing the large shaft workpiece on the movable table. The handwheel can be rotated in the opposite direction to release the large shaft workpiece. When the large shaft workpiece rubs against the clamping rods, it can rotate on its own, reducing the friction between the large shaft workpiece and the clamping rods, making the large shaft workpiece move more smoothly on the support frame. Then, the processing position of the large shaft workpiece is adjusted to the center of the rotating disk, and the slider drives the two sets of clamping mechanisms to stop on both sides of the processing area, which makes the processing accuracy more precise. Attached Figure Description

[0013] Figure 1This is the front view of the present invention;

[0014] Figure 2 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the rotating mechanism structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the clamping mechanism of this utility model.

[0017] The components include: 1. Base; 2. Movable platform; 3. Rotary disc; 4. Limiting frame; 5. Slider; 6. Support frame; 7. Fixed seat; 8. Slide groove; 9. Moving seat; 10. Clamping rod; 11. One-way lead screw; 12. Handwheel; 13. Two-way lead screw; 14. Rotary motor; 15. Rotating shaft; 16. Gear No. 1; 17. Gear No. 2; 18. Self-locking motor; 19. Bottom frame; 20. Top frame; 21. Strip groove; 22. Hinge seat; 23. Rotating shaft; 24. Hydraulic cylinder; 25. Connecting arm. Detailed Implementation

[0018] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0019] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a rotary support and positioning device for large shaft-type workpieces, including a base 1, a movable platform 2, and a rotating disk 3. The top of the base 1 is provided with a lifting mechanism, and the top of the lifting mechanism is fixedly connected to the movable platform 2. The movable platform 2 is provided with a rotating mechanism, and the top of the rotating mechanism is fixedly connected to the rotating disk 3. The top of the rotating disk 3 is provided with a limiting frame 4. Slider 5 is symmetrically slidably connected to both sides inside the limiting frame 4. The top of the limiting frame 4 is provided with a driving mechanism, and the top of the slider 5 is provided with a clamping mechanism. The large shaft-type workpiece is fixed to the top of the slider 5 by the clamping mechanism. The driving mechanism can drive the two sliders 5 to move simultaneously in different directions. The two clamping mechanisms stop on both sides of the processing area of ​​the large shaft-type workpiece, restricting the processing position of the large shaft-type workpiece, which makes the processing accuracy more precise. The lifting mechanism can drive the movable platform 2 to move up and down, and the large shaft-type workpiece is fixed above the movable platform 2, which drives the large shaft-type workpiece to adjust the processing height. The rotating mechanism can drive the movable platform 2 to rotate, changing the position of the two ends of the large shaft-type workpiece, which facilitates the processing of the two ends of the large shaft-type workpiece.

[0020] The clamping mechanism includes a support frame 6, a fixed seat 7, a slide groove 8, a movable seat 9, a clamping rod 10, and a one-way screw 11. The top of the slider 5 is fixedly connected to the support frame 6, and one end of the support frame 6 is fixedly connected to the fixed seat 7. The support frame 6 has a slide groove 8 inside, and the movable seat 9 is slidably connected inside the slide groove 8. The one-way screw 11 is rotatably connected inside the slide groove 8, with one end of the one-way screw 11 passing through the interior of the movable seat 9 and threadedly connected thereto. The fixed seat 7 and both ends of the slide groove 8 are symmetrically hinged with clamping rods 10. One end of the one-way screw 11 passes through the interior of the support frame 6 and is fixedly connected to a handwheel 12. A rubber pad is fixedly connected to the outer side of the clamping rod 10. Large shaft-like workpieces are placed on the support frame 6 at both ends. The slide groove 8 restricts the movement trajectory of the movable seat 9, and the handwheel 12 can drive the one-way screw 11 to rotate forward and backward inside the slide groove 8. The movable seat 9 moves back and forth along the slide groove 8. Both the fixed seat 7 and the movable seat 9 are rotatably mounted with clamping rods 10. Rotating the handwheel 12 in the forward direction moves the movable seat 9 closer to the fixed seat 7, causing the two sets of clamping rods 10 to move closer to each other and clamp the large shaft workpiece, thus fixing the large shaft workpiece on the movable table 2. The handwheel 12 can be rotated in the reverse direction to release the large shaft workpiece. When the large shaft workpiece rubs against the clamping rods 10, it can rotate on its own, reducing the friction between the large shaft workpiece and the clamping rods 10, making the large shaft workpiece move more smoothly on the support frame 6. Then, the processing position of the large shaft workpiece is adjusted to the center of the rotating disk 3. With the help of the slider 5, the two sets of clamping mechanisms stop on both sides of the processing area. Then, rotating the handwheel 12 in the forward direction moves the movable seat 9 closer to the fixed seat 7, causing the two sets of clamping rods 10 to move closer to each other and clamp the large shaft workpiece again.

[0021] The driving mechanism includes a bidirectional lead screw 13 and a rotary motor 14. The top of the limiting frame 4 is rotatably connected to the bidirectional lead screw 13. The two ends of the bidirectional lead screw 13 pass through the interior of the two sliders 5 and are threadedly connected to them. The limiting frame 4 restricts the movement trajectory of the sliders 5. The bidirectional lead screw 13 is threadedly engaged with the sliders 5. When the rotary motor 14 drives the bidirectional lead screw 13 to rotate in both directions, it can drive the sliders 5 to move in different directions simultaneously, so as to drive the two sliders 5 to move closer or further away from each other, so that the sliders 5 drive the two sets of clamping mechanisms to stop on both sides of the processing area.

[0022] The rotating mechanism includes a rotating shaft 15, a first gear 16, a second gear 17, and a self-locking motor 18. The rotating shaft 15 is rotatably connected inside the movable platform 2, and the top end of the rotating shaft 15 is fixedly connected to the bottom end of the rotating disk 3. The first gear 16 is fixedly connected to the outside of the rotating shaft 15. The second gear 17 is rotatably connected to one side inside the movable platform 2. The self-locking motor 18 is fixedly installed on one side of the bottom of the movable platform 2. The second gear 17 meshes with the outer wall of the first gear 16. The output end of the self-locking motor 18 is fixedly connected to the bottom of the second gear 17. The output of the self-locking motor 18 drives the second gear 17 to rotate. The second gear 17 meshes with the first gear 16, and the first gear 16 is connected to the rotating shaft 15 as a whole. The self-locking motor 18 can drive the rotating shaft 15 to rotate inside the movable table 2. The movable table 2 is fixed on the top of the rotating shaft 15 and rotates together with the rotating shaft 15. The large shaft workpiece is fixed above the movable table 2 by the clamping mechanism. The movable table 2 can drive the large shaft workpiece to rotate and change the position of the two ends of the large shaft workpiece, which facilitates the processing of the two ends of the large shaft workpiece.

[0023] Both the rotary motor 14 and the self-locking motor 18 are covered with protective shells. Multiple anti-collision strips are fixedly connected to the outside of the protective shells. The anti-collision strips are rectangular in shape. The protective shells and anti-collision strips can isolate the rotary motor 14 and the self-locking motor 18 from external objects, preventing external objects from directly contacting the rotary motor 14 and the self-locking motor 18, thus protecting the rotary motor 14 and the self-locking motor 18.

[0024] The lifting mechanism includes a base frame 19, a top frame 20, a strip groove 21, a hinge seat 22, a rotating shaft 23, a hydraulic cylinder 24, and a connecting arm 25. The top of the base 1 is fixedly connected to the base frame 1, and the bottom of the movable platform 2 is fixedly connected to the top frame 20. The base frame 19 and the movable platform 2 are symmetrically provided with strip grooves 21 inside. The base frame 19 and the movable platform 2 are symmetrically provided with hinge seats 22. The hinge seat 22 is an X-shaped structure composed of two rotating rods hinged together by the rotating shaft 23. One side of the hinge seat 22 is slidably connected to the strip groove 21. The hydraulic cylinder 24 is hinged to one side of the base frame 19. The output end of the hydraulic cylinder 24 is fixedly connected to the connecting arm 25. One end of the connecting arm 25 is fixedly connected to the outer side of the rotating shaft 23. Then, the output end of the hydraulic cylinder 24 is connected to the connecting arm 25 and the rotating shaft 23 as one unit. When the hydraulic cylinder 24 drives the connecting arm 25 to extend and retract, it can drive the hinge seat 22 to rotate around the rotating shaft 23 as the center, so that the hinge seat 22 extends to both sides, driving the top frame 20 at its top to descend. The bottom of the movable table 2 is fixed to the top frame 20 as one unit, which is used to lower the movable table 2. Large shaft workpieces are fixed above the movable table 2, which can drive the large shaft workpieces to descend, or cause the hinge seat 22 to retract to the middle, driving the top frame 20 at the top to rise. The bottom of the movable table 2 is fixed to the top frame 20 as one unit, which is used to raise the movable table 2. Similarly, it drives the large shaft workpieces to rise, which is used to adjust the processing height of the large shaft workpieces.

[0025] The rotating support and positioning device for this large shaft workpiece has a handwheel 12 that drives the one-way lead screw 11 to rotate forward and backward inside the slide groove 8, while simultaneously driving the movable seat 9 to move back and forth along the slide groove 8. Both the fixed seat 7 and the movable seat 9 are rotatably mounted with clamping rods 10. Rotating the handwheel 12 forward moves the movable seat 9 closer to the fixed seat 7, causing the two sets of clamping rods 10 to move closer together, clamping the large shaft workpiece and fixing it on the movable table 2. Reverse rotation of the handwheel 12 releases the large shaft workpiece. The large shaft workpiece rotates due to friction with the clamping rods 10, reducing friction between them and allowing the large shaft workpiece to move more smoothly on the support frame 6. Then, the machining position of the large shaft workpiece is adjusted to the center of the rotating disk 3, and the slider 5 drives the two clamping mechanisms to stop on both sides of the machining area, resulting in more precise machining.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary support and positioning device for large shaft-type workpieces, comprising a base (1), a movable table (2), and a rotating disk (3), characterized in that: The base (1) is provided with a lifting mechanism at the top, and a movable platform (2) is fixedly connected to the top of the lifting mechanism. The movable platform (2) is provided with a rotating mechanism inside, and a rotating disk (3) is fixedly connected to the top of the rotating mechanism. A limiting frame (4) is provided at the top of the rotating disk (3). Slider (5) is symmetrically slidably connected to both sides inside the limiting frame (4). A driving mechanism is provided at the top of the limiting frame (4), and a clamping mechanism is provided at the top of the slider (5). The clamping mechanism includes a support frame (6), a fixed seat (7), a slide groove (8), a movable seat (9), a clamping rod (10), and a one-way screw (11). The top of the slider (5) is fixedly connected to the support frame (6), and one end of the support frame (6) is fixedly connected to the fixed seat (7). The support frame (6) has a slide groove (8) inside, and the movable seat (9) is slidably connected inside the slide groove (8). The one-way screw (11) is rotatably connected inside the slide groove (8). One end of the one-way screw (11) passes through the interior of the movable seat (9) and is threadedly connected to it. The fixed seat (7) and the two ends of the slide groove (8) are symmetrically hinged with clamping rods (10).

2. The rotary support and positioning device for large shaft-type workpieces according to claim 1, characterized in that: One end of the unidirectional lead screw (11) extends through the interior of the support frame (6) and is fixedly connected to a handwheel (12), and a rubber pad is fixedly connected to the outside of the clamping rod (10).

3. The rotary support and positioning device for large shaft-type workpieces according to claim 1, characterized in that: The driving mechanism includes a bidirectional lead screw (13) and a rotary motor (14). The top of the limiting frame (4) is rotatably connected to the bidirectional lead screw (13). The two ends of the bidirectional lead screw (13) pass through the interior of the two sliders (5) and are threadedly connected to them.

4. A rotary support and positioning device for large shaft-type workpieces according to claim 3, characterized in that: The rotating mechanism includes a rotating shaft (15), a first gear (16), a second gear (17), and a self-locking motor (18). The rotating shaft (15) is rotatably connected inside the movable platform (2). The top end of the rotating shaft (15) is fixedly connected to the bottom end of the rotating disk (3). The first gear (16) is fixedly connected to the outside of the rotating shaft (15). The second gear (17) is rotatably connected to one side inside the movable platform (2). The self-locking motor (18) is fixedly installed on one side of the bottom of the movable platform (2). The second gear (17) meshes with the outer wall of the first gear (16). The output end of the self-locking motor (18) is fixedly connected to the bottom of the second gear (17).

5. A rotary support and positioning device for large shaft-type workpieces according to claim 4, characterized in that: Both the rotary motor (14) and the self-locking motor (18) are covered with protective shells. Multiple anti-collision strips are fixedly connected to the outside of the protective shells. The anti-collision strips are rectangular in shape.

6. A rotary support and positioning device for large shaft-type workpieces according to claim 1, characterized in that: The lifting mechanism includes a bottom frame (19), a top frame (20), a strip groove (21), a hinge seat (22), a rotating shaft (23), a hydraulic cylinder (24), and a connecting arm (25). The bottom frame (19) is fixedly connected to the top of the base (1), and the top frame (20) is fixedly connected to the bottom of the movable platform (2). The strip groove (21) is symmetrically provided inside the bottom frame (19) and the movable platform (2). The hinge seat (22) is symmetrically provided between the bottom frame (19) and the movable platform (2). The hinge seat (22) is an X-shaped structure composed of two rotating rods hinged together by the rotating shaft (23). One side of the hinge seat (22) is slidably connected to the strip groove (21). The hydraulic cylinder (24) is hinged to one side of the bottom frame (19). The connecting arm (25) is fixedly connected to the output end of the hydraulic cylinder (24). One end of the connecting arm (25) is fixedly connected to the outside of the rotating shaft (23).

Images