Large-aperture floating center frame

Abstract

The large-aperture floating center frame comprises a frame body, a mounting ring is fixedly arranged at the center position of the frame body, a plurality of mounting cavities are formed in the front end of the mounting ring, and the mounting cavities are annularly distributed at equal intervals; first hydraulic telescopic devices and second hydraulic telescopic devices are sequentially, alternately and fixedly arranged in the multiple mounting cavities, the first hydraulic telescopic devices and the second hydraulic telescopic devices are annularly distributed at equal intervals, and connecting bases are fixedly arranged at the upper ends of the telescopic ends of the first hydraulic telescopic devices; a supporting seat is fixedly arranged at the upper end of the telescopic end of the second hydraulic telescopic device, the upper end of the supporting seat is of an uneven structure, four threaded holes are formed in each of the first hydraulic telescopic device and the second hydraulic telescopic device, bolts are arranged in the threaded holes, and the other ends of the bolts extend into the frame body. By means of the structure, the problems that the fixing effect of a clamping and fixing mechanism is not good enough, and a workpiece is difficult to position are solved.

Description

Technical Field

[0001] The invention relates to the technical field of center frames, in particular to a large-aperture floating center frame. Background Art

[0002] The large-aperture floating center frame is a center frame structure installed on the frame, which can produce a small displacement with the movement of the rotating parts, thereby avoiding the mechanical stress caused by expansion and contraction, and ensuring the smoothness and precision of the rotation. The large-aperture floating center frame is usually composed of a base, a rotating shaft, bearings, gears and a lubrication system. These components work together to ensure that the center frame can stably support large-aperture workpieces and maintain high-precision rotation during processing. Large-aperture floating center frames are widely used in fields that require high-precision and large-load-bearing capacity processing, such as aerospace, automobile manufacturing, and mechanical manufacturing. In these fields, large-aperture workpieces usually have complex shapes and high-precision requirements, and require the use of floating center frames to achieve stable support and high-precision processing.

[0003] For example, the Chinese patent "A Center Frame Adapter" with announcement number CN214108814U includes a fixed frame, on which a guide member, a clamping member and a driving member are arranged; the guide member is mounted on the fixed frame; the clamping member includes a clamping rod, which is displaced on the guide member, and a protective member is fixed to the end of the clamping rod close to the product, and the clamping rod clamps the product through the protective member; the driving member is connected to the guide member, and the driving member drives the clamping rod to clamp the product, and the guide member includes a guide sleeve, which is fixedly connected to the fixed frame, and the end of the clamping rod close to the product is arranged A limiting plate is provided, which is fixedly connected to one end of the clamping rod, and the other end of the clamping rod extends into the interior of the guide sleeve; the protective member includes a rubber pad, which is rotatably connected to the limiting plate, and a baffle is provided at the end of the clamping rod away from the limiting plate, the baffle is located in the guide sleeve, and the baffle is fixedly connected to the clamping rod, a return spring is sleeved on the clamping rod, one end of the return spring presses against the baffle, and the other end presses against the inner wall of the guide sleeve, and the driving member includes a clamping bolt, the screw rod of the clamping bolt is threadedly connected to the end of the guide sleeve away from the rubber pad, and the end of the clamping bolt close to the clamping rod contacts the baffle.

[0004] Although the above-mentioned prior art can realize the fixed use of the center frame, in actual use, on the one hand, the fixing effect of the clamping and fixing mechanism is not good enough. Usually, an extrusion plate is used to fix the workpiece, which leads to fewer contact points between the clamping and fixing mechanism and the workpiece, thereby reducing the fixing effect of the clamping and fixing mechanism. On the other hand, it is difficult to position the workpiece. Usually, the workpiece needs to be placed in the center position of the center frame for fixation. Manual placement of the workpiece is prone to position deviation, which affects the processing accuracy. Therefore, it does not meet the existing needs. In this regard, we propose a large-aperture floating center frame. Summary of the invention

[0005] The purpose of the present invention is to provide a large-aperture floating center frame to solve the problems that the clamping and fixing mechanism proposed in the above background technology has an insufficient fixing effect and is difficult to position the workpiece.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a large-aperture floating center frame, comprising a frame body, which is a hollow structure, a mounting ring is fixedly arranged at the center position of the frame body, a plurality of mounting cavities are arranged inside the front end of the mounting ring, and the mounting cavities are equidistantly distributed in a ring shape, a first hydraulic telescopic device and a second hydraulic telescopic device are fixedly arranged in turn inside the plurality of mounting cavities, and the first hydraulic telescopic device and the second hydraulic telescopic device are equidistantly distributed in a ring shape, a connecting seat is fixedly arranged at the upper end of the telescopic end of the first hydraulic telescopic device, a supporting seat is fixedly arranged at the upper end of the telescopic end of the second hydraulic telescopic device, and the upper end of the supporting seat is an uneven structure, four threaded holes are arranged inside the first hydraulic telescopic device and the second hydraulic telescopic device, bolts are arranged inside the threaded holes, and the other end of the bolt extends to the inside of the frame body.

[0007] Preferably, a mounting seat is provided above the connecting seat, an arc-shaped clamping plate is fixedly provided on the upper end of the mounting seat, a slot is provided below the inside of the mounting seat, the lower end of the slot is an opening structure, a clamping seat is fixedly provided on the upper end of the connecting seat, the clamping seat extends into the slot, and the clamping seat and the slot are slidably matched, a rubber pad is fixedly provided on the upper end of the clamping seat, and the rubber pad contacts the inner wall of the slot.

[0008] Preferably, telescopic cavities are provided on both sides of the lower interior of the mounting seat, the telescopic cavities are connected to the slots, a pull rod is provided inside the telescopic cavity, one end of the pull rod extends to the outside of the mounting seat, and the pull rod is slidably connected to the contact portion of the mounting seat.

[0009] Preferably, a movable plate is fixedly provided on the other end of the pull rod, the movable plate extends into the slot and is located below the clamping seat, and the movable plate is clamped and fixed to the clamping seat.

[0010] Preferably, a return spring is sleeved on the outside of the pull rod, and two ends of the return spring are fixedly connected to the moving plate and the inner wall of the telescopic cavity respectively.

[0011] Preferably, a slide groove is provided inside the rear end of the mounting ring, an annular rack is provided inside the slide groove, the annular rack is slidably matched with the slide groove, three third hydraulic telescopic devices are fixedly provided on the inner side of the annular rack near the center position of the mounting ring, the third hydraulic telescopic devices are distributed equidistantly in a ring shape, and a mounting ear plate is fixedly provided at the telescopic end of the third hydraulic telescopic device.

[0012] Preferably, a fixing rod is provided inside the mounting ear plate, the fixing rod is rotatably connected to the inner wall of the mounting ear plate, and a rubber wheel is fixedly provided outside the fixing rod.

[0013] Preferably, a first motor is fixedly disposed on the outside of the mounting ear plate, and an output shaft of the first motor extends to the inside of the mounting ear plate and is fixedly connected to the fixing rod.

[0014] Preferably, a driving cavity is provided at the rear end of the frame body, the driving cavity is communicated with the slide groove, a driving gear is provided inside the driving cavity, and the driving gear is meshed and connected with the annular rack.

[0015] Preferably, a second motor is fixedly arranged at a middle position inside the frame, and an output shaft of the second motor extends into the driving cavity and is fixedly connected to the driving gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can increase the supporting points between the clamping and fixing mechanism and the workpiece through the arc-shaped clamping block and the support seat. When the workpiece is clamped and fixed, the workpiece has completed position positioning. At this time, the first hydraulic telescopic device and the second hydraulic telescopic device are turned on to extend the telescopic end of the first hydraulic telescopic device. The extension of the telescopic end of the first hydraulic telescopic device drives the arc-shaped clamping plate to approach the workpiece until the arc-shaped clamping plate contacts and squeezes the workpiece. At the same time, the extension of the telescopic end of the second hydraulic telescopic device drives the support seat to approach the workpiece until the support seat contacts and squeezes the surface of the workpiece. The workpiece is supported and fixed at multiple points by the support seat and the arc-shaped clamping plate, thereby improving the clamping and fixing effect of the workpiece.

[0018] 2. The present invention can quickly position the workpiece through the third hydraulic telescopic device and the rubber wheel. Before fixing the workpiece, the position of the rubber wheel is first adjusted according to the shape of the workpiece. At this time, the second motor is turned on, so that the output shaft of the second motor drives the driving gear to rotate, and the driving gear drives the annular rack meshing with it to rotate in the slide groove. During the rotation of the annular rack, the third hydraulic telescopic device is driven to rotate until the rubber wheel is adjusted to a suitable position. At this time, the three third hydraulic telescopic devices are turned on synchronously, and the rubber wheel and the mounting ear plate are driven to move toward the center position of the mounting ring through the extension of the telescopic end of the third hydraulic telescopic device until the rubber wheel moves to a suitable position. At this time, the first motor is turned on again, so that the output shaft of the first motor drives the fixing rod and the rubber wheel to rotate together, and the workpiece is aligned with the gap between the rubber wheels. At this time, the friction between the rubber wheel and the workpiece drives the workpiece to move, thereby positioning the workpiece to avoid position deviation after the workpiece is clamped and fixed.

[0019] The movable plate is then disengaged from the clamping seat and the movable plate is disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is then disengaged from the clamping seat, and the movable plate is further disengaged from the clamping seat, and the movable plate is further disengaged from the clamping seat, and the movable plate is further disengaged from the clamping seat, and the movable plate is further disengaged from the clamping seat, and the clamping seat is further disengaged from the clamping seat, and the movable plate is further disengaged from the clamping seat, and the clamping seat is further disengaged from the clamping seat, and the clamping plate is further disengaged from the clamping seat, and the clamping plate is further disengaged from the clamping seat, and the clamping plate is further disengaged from the clamping seat, and the clamping plate is further disengaged from the clamping seat, and the clamping plate is BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0021] Figure 2 It is a front view of the internal structure of the present invention;

[0022] Figure 3 It is a back view of the internal structure of the present invention;

[0023] Figure 4 For the present invention Figure 1 A partial enlarged view of the middle A area;

[0024] Figure 5 For the present invention Figure 2 A partial enlarged view of area B in the middle.

[0025] In the figure: 1. frame; 2. mounting ring; 3. mounting cavity; 4. first hydraulic telescopic device; 5. second hydraulic telescopic device; 6. threaded hole; 7. connecting seat; 8. supporting seat; 9. bolt; 10. mounting seat; 11. arc-shaped clamping plate; 12. annular rack; 13. third hydraulic telescopic device; 14. mounting ear plate; 15. first motor; 16. rubber wheel; 17. fixing rod; 18. slot; 19. clamping seat; 20. rubber pad; 21. telescopic cavity; 22. pull rod; 23. moving plate; 24. reset spring; 25. slide groove; 26. second motor; 27. driving gear; 28. driving cavity. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-5 An embodiment of the present invention is as follows: a large-aperture floating center frame comprises a frame body 1, the frame body 1 is a hollow structure, a mounting ring 2 is fixedly arranged at the center position of the frame body 1, a plurality of mounting cavities 3 are arranged inside the front end of the mounting ring 2, the mounting cavities 3 are equidistantly distributed in a ring shape, a first hydraulic telescopic device 4 and a second hydraulic telescopic device 5 are alternately fixedly arranged inside the plurality of mounting cavities 3, and the first hydraulic telescopic device 4 and the second hydraulic telescopic device 5 are equidistantly distributed in a ring shape, a connecting seat 7 is fixedly arranged at the upper end of the telescopic end of the first hydraulic telescopic device 4, a supporting seat 8 is fixedly arranged at the upper end of the telescopic end of the second hydraulic telescopic device 5, the upper end of the supporting seat 8 is an uneven structure, four threaded holes 6 are arranged inside the first hydraulic telescopic device 4 and the second hydraulic telescopic device 5, bolts 9 are arranged inside the threaded holes 6, and the other end of the bolt 9 extends to the inside of the frame body 1.

[0028] During use, when the workpiece is clamped and fixed, the workpiece has been positioned. At this time, the first hydraulic telescopic device 4 and the second hydraulic telescopic device 5 are turned on to extend the telescopic end of the first hydraulic telescopic device 4. The extension of the telescopic end of the first hydraulic telescopic device 4 drives the arc-shaped clamping plate 11 to approach the workpiece until the arc-shaped clamping plate 11 contacts and squeezes the workpiece. At the same time, the extension of the telescopic end of the second hydraulic telescopic device 5 drives the support seat 8 to approach the workpiece until the support seat 8 contacts and squeezes the surface of the workpiece. The workpiece is supported and fixed at multiple points by the support seat 8 and the arc-shaped clamping plate 11.

[0029] See also Figure 2 and Figure 5A mounting seat 10 is arranged above the connecting seat 7, an arc-shaped clamping plate 11 is fixedly arranged on the upper end of the mounting seat 10, a slot 18 is arranged below the inside of the mounting seat 10, and the lower end of the slot 18 is an open structure, a clamping seat 19 is fixedly arranged on the upper end of the connecting seat 7, the clamping seat 19 extends into the slot 18, and the clamping seat 19 and the slot 18 are slidably matched, a rubber pad 20 is fixedly arranged on the upper end of the clamping seat 19, and the rubber pad 20 contacts the inner wall of the slot 18, so as to reduce the gap between the slot 18 and the clamping seat 19 through the rubber pad 20.

[0030] See also Figure 2 and Figure 5 A telescopic cavity 21 is provided on both sides of the lower part of the mounting seat 10, and the telescopic cavity 21 is connected to the slot 18. A pull rod 22 is provided inside the telescopic cavity 21, and one end of the pull rod 22 extends to the outside of the mounting seat 10, and the pull rod 22 is slidably connected to the contact part of the mounting seat 10, so that the movable plate 23 can be moved by the pull rod 22.

[0031] See also Figure 2 and Figure 5 A movable plate 23 is fixedly provided at the other end of the pull rod 22. The movable plate 23 extends into the slot 18 and is located below the clamping seat 19. The movable plate 23 is clamped and fixed with the clamping seat 19, so that the arc clamping plate 11 can be replaced by clamping and fixing the movable plate 23 with the clamping seat 19.

[0032] See also Figure 2 and Figure 5 The outer sleeve of the pull rod 22 is provided with a return spring 24, and the two ends of the return spring 24 are respectively fixedly connected to the moving plate 23 and the inner wall of the telescopic cavity 21, so that the return spring 24 can drive the pull rod 22 to reset.

[0033] See also Figure 3 A slide groove 25 is arranged inside the rear end of the mounting ring 2, and an annular rack 12 is arranged inside the slide groove 25. The annular rack 12 slides with the slide groove 25. Three third hydraulic telescopic devices 13 are fixedly arranged on the inner side of the annular rack 12 near the center position of the mounting ring 2. The third hydraulic telescopic devices 13 are distributed equidistantly in a ring shape. A mounting ear plate 14 is fixedly arranged at the telescopic end of the third hydraulic telescopic device 13, so that the position of the mounting ear plate 14 can be adjusted by the third hydraulic telescopic device 13.

[0034] See also Figure 3 A fixing rod 17 is arranged inside the mounting ear plate 14, and the fixing rod 17 is rotatably connected to the inner wall of the mounting ear plate 14. A rubber wheel 16 is fixedly arranged outside the fixing rod 17, so that the workpiece can be moved by the friction between the rubber wheel 16 and the workpiece.

[0035] See also Figure 3A first motor 15 is fixedly arranged on the outside of the mounting ear plate 14 , and an output shaft of the first motor 15 extends to the inside of the mounting ear plate 14 and is fixedly connected to a fixing rod 17 , so that the fixing rod 17 can be driven to rotate by the first motor 15 .

[0036] See also Figure 3 A driving cavity 28 is provided at the rear end of the frame body 1, and the driving cavity 28 is communicated with the slide groove 25. A driving gear 27 is provided inside the driving cavity 28, and the driving gear 27 is meshedly connected with the annular rack 12, so that the annular rack 12 meshed with it can be driven to rotate by the driving gear 27.

[0037] See also Figure 3 A second motor 26 is fixedly arranged at the middle position inside the frame 1 , and the output shaft of the second motor 26 extends into the driving cavity 28 and is fixedly connected to the driving gear 27 , so that the second motor 26 drives the driving gear 27 to rotate.

[0038] Working principle: before fixing the workpiece, first adjust the position of the rubber wheel 16 according to the shape of the workpiece, then turn on the second motor 26, so that the output shaft of the second motor 26 drives the driving gear 27 to rotate, and at the same time the driving gear 27 drives the annular rack 12 meshing with it to rotate in the slide groove 25, and during the rotation of the annular rack 12, drives the third hydraulic telescopic device 13 to rotate until the rubber wheel 16 is adjusted to a suitable position, then the three third hydraulic telescopic devices 13 are turned on synchronously, and the rubber wheel 16 and the mounting ear plate 14 are driven to move toward the center position of the mounting ring 2 through the extension of the telescopic end of the third hydraulic telescopic device 13, until the rubber wheel 16 moves to a suitable position, then turn on the first motor 15 again, so that the output shaft of the first motor 15 drives the fixing rod 17 and the rubber wheel 16 to rotate together, and align the workpiece with the gap between the rubber wheels 16, and at this time the friction between the rubber wheel 16 and the workpiece drives the workpiece to move, and when the workpiece is clamped and fixed, according to the workpiece Replace the arc-shaped clamping plate 11 with a size and shape that matches it. First pull the pull rod 22 to make the pull rod 22 drive the movable plate 23 to move outward in the telescopic cavity 21. At the same time, the reset spring 24 is compressed until the movable plate 23 is completely moved into the telescopic cavity 21. At this time, the movable plate 23 is separated from the clamping seat 19, and then the arc-shaped clamping plate 11 is pulled upward to separate the arc-shaped clamping plate 11 from the connecting seat 7. At this time, align the slot 18 opening at the lower end of the new arc-shaped clamping plate 11 with the clamping seat 19 and move it to the connecting seat 7. The arc-shaped clamping plate 11 moves downward until the clamping seat 19 enters the slot 18, and the arc-shaped clamping plate 11 continues to move downward. At this time, the clamping seat 19 contacts and squeezes the movable plate 23. After the movable plate 23 is squeezed, it moves toward the inside of the telescopic cavity 21. At the same time, the reset spring 24 is in a compressed state until the arc-shaped clamping plate 11 moves to a suitable position. At this time, the reset spring 24 resets and pushes the movable plate 23 to move out of the telescopic cavity 21 until the movable plate 23 is clamped and fixed with the clamping seat 19 again.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A large-aperture floating center frame, comprising a frame body (1), the frame body (1) being a hollow structure, characterized in that: A mounting ring (2) is fixedly arranged at the center position of the frame (1), and a plurality of mounting cavities (3) are arranged inside the front end of the mounting ring (2), and the mounting cavities (3) are distributed in a circular shape and at equal intervals. A first hydraulic telescopic device (4) and a second hydraulic telescopic device (5) are fixedly arranged inside the plurality of mounting cavities (3) in turn, and the first hydraulic telescopic device (4) and the second hydraulic telescopic device (5) are distributed in a circular shape and at equal intervals. A connecting seat (7) is fixedly arranged at the upper end of the telescopic end of the first hydraulic telescopic device (4), and a supporting seat (8) is fixedly arranged at the upper end of the telescopic end of the second hydraulic telescopic device (5), and the upper end of the supporting seat (8) is an uneven structure. Four threaded holes (6) are arranged inside the first hydraulic telescopic device (4) and the second hydraulic telescopic device (5), and bolts (9) are arranged inside the threaded holes (6), and the other end of the bolt (9) extends to the inside of the frame (1).

2. A large-aperture floating center frame according to claim 1, characterized in that: A mounting seat (10) is arranged above the connecting seat (7), an arc-shaped clamping plate (11) is fixedly arranged at the upper end of the mounting seat (10), a slot (18) is arranged below the inside of the mounting seat (10), the lower end of the slot (18) is an open structure, a clamping seat (19) is fixedly arranged at the upper end of the connecting seat (7), the clamping seat (19) extends into the slot (18), and the clamping seat (19) and the slot (18) are slidably matched, and a rubber pad (20) is fixedly arranged at the upper end of the clamping seat (19), and the rubber pad (20) contacts the inner wall of the slot (18).

3. A large-aperture floating center frame according to claim 2, characterized in that: Telescopic cavities (21) are provided on both sides of the lower interior of the mounting seat (10), the telescopic cavity (21) is communicated with the slot (18), a pull rod (22) is provided inside the telescopic cavity (21), one end of the pull rod (22) extends to the outside of the mounting seat (10), and the pull rod (22) is slidably connected to the contact portion of the mounting seat (10).

4. A large-aperture floating center frame according to claim 3, characterized in that: A movable plate (23) is fixedly provided at the other end of the pull rod (22); the movable plate (23) extends into the slot (18) and is located below the clamping seat (19); and the movable plate (23) is clamped and fixed to the clamping seat (19).

5. A large-aperture floating center frame according to claim 4, characterized in that: The outer sleeve of the pull rod (22) is provided with a return spring (24), and the two ends of the return spring (24) are respectively fixedly connected to the moving plate (23) and the inner wall of the telescopic cavity (21).

6. A large-aperture floating center frame according to claim 5, characterized in that: A slide groove (25) is arranged inside the rear end of the mounting ring (2), an annular rack (12) is arranged inside the slide groove (25), the annular rack (12) and the slide groove (25) are slidably matched, three third hydraulic telescopic devices (13) are fixedly arranged on the inner side of the annular rack (12) near the center position of the mounting ring (2), the third hydraulic telescopic devices (13) are distributed in an annular shape and are equidistant, and a mounting ear plate (14) is fixedly arranged at the telescopic end of the third hydraulic telescopic device (13).

7. A large-aperture floating center frame according to claim 6, characterized in that: A fixing rod (17) is arranged inside the mounting ear plate (14), the fixing rod (17) is rotatably connected to the inner wall of the mounting ear plate (14), and a rubber wheel (16) is fixedly arranged outside the fixing rod (17).

8. The large-aperture floating center frame according to claim 7, characterized in that: A first motor (15) is fixedly arranged outside the mounting ear plate (14), and an output shaft of the first motor (15) extends into the interior of the mounting ear plate (14) and is fixedly connected to a fixing rod (17).

9. The large-aperture floating center frame according to claim 8, characterized in that: A driving cavity (28) is provided at the rear end of the frame body (1), the driving cavity (28) is communicated with the slide groove (25), a driving gear (27) is provided inside the driving cavity (28), and the driving gear (27) is meshedly connected with the annular rack (12).

10. The large-aperture floating center frame according to claim 9, characterized in that: A second motor (26) is fixedly arranged at a middle position inside the frame (1), and an output shaft of the second motor (26) extends into the drive cavity (28) and is fixedly connected to the drive gear (27).

Images