Clamping device for shaft body casting machining

Abstract

The utility model discloses a clamping device for shaft body casting processing, which relates to the field of machining, and comprises a base, the top surface of the base is fixedly connected with a support ring, the support ring is radially provided with three threaded rods I in a sliding manner, the support ring is provided with three uniformly distributed notches, the notches are internally and rotatably provided with threaded sleeves, and the threaded rods I and the threaded sleeves II are fixedly connected with the base. The supporting ring is provided with a driving mechanism used for driving the threaded sleeves to rotate synchronously, one end of the threaded rod is fixedly connected with an abutting support, the end of the abutting support is fixedly connected with a gasket, the gasket is provided with a second threaded rod, the second threaded rod is in threaded connection with a nut, and the nut is located in the abutting support. A clamping plate is fixedly connected to the end of the second threaded rod, a spring is fixedly arranged between the clamping plate and the gasket, and a limiting structure used for limiting axial rotation of the second threaded rod is arranged between the clamping plate and the gasket. The first threaded rod is driven by the driving device to slide, the nut is rotated to adjust the spring, and the clamping force is controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a clamping device for shaft casting processing. Background Art

[0002] In mechanical processing, the shaft must be placed in a correct position on the machine tool or in the fixture before processing. This process is called positioning. In order to prevent the positioned shaft from being displaced under the action of cutting force and to keep it in the correct position during the processing, the shaft must be clamped and fixed. This process is called clamping. The whole process of positioning and clamping is called clamping. The shaft needs to be clamped and fixed by a clamping device before further processing. Therefore, the clamping device for shaft processing is a device that clamps the shaft during processing.

[0003] In the prior art, this device usually uses fan-shaped soft claws to clamp and fix the shaft, but this clamping method has limitations. A manual chuck should be used as much as possible to rely on the operator's experience to control the clamping force, and it is difficult to control the clamping force for different processing.

[0004] To this end, we propose a clamping device for shaft casting processing to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem of controlling the clamping force of the existing shaft fixing device in the prior art, and proposes a clamping device for shaft casting processing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A clamping device for shaft casting processing comprises a base, a support ring is fixedly connected to the top surface of the base, three threaded rods are radially slidably arranged on the support ring, three evenly distributed slots are opened on the support ring, a threaded sleeve is rotatably arranged in the slot, the threaded sleeve is threadedly connected to a threaded rod, a driving mechanism for driving multiple threaded sleeves to rotate synchronously is provided on the support ring, one end of the threaded rod is fixedly connected to a pressure bracket, a gasket is fixedly connected to the end of the pressure bracket, a threaded rod is provided on the gasket, a nut is threadedly connected to the threaded rod, the nut is in the pressure bracket, and two ends of the threaded rod are fixedly connected to a clamp, a spring is fixedly arranged between the clamp and the gasket, and a limiting structure for limiting the axial rotation of the threaded rod is provided between the clamp and the gasket.

[0008] Preferably, the driving mechanism comprises a gear ring rotatably arranged on the supporting ring, and the fixed sleeve outside the threaded sleeve is provided with a gear, and the gear is meshingly connected with the gear ring.

[0009] Preferably, the limiting structure comprises two sliding plates fixedly connected to the gasket and a support rod fixedly connected to the convex surface of the clamping plate, and the sliding plates are slidably connected to the support rod.

[0010] Preferably, a groove is axially opened on the outer wall of the threaded rod, a mounting hole is opened on the outer wall of the support ring, the threaded rod passes through the mounting hole, a protrusion matching the groove is fixedly arranged on the inner wall of the mounting hole, and the groove is slidably connected to the protrusion.

[0011] Preferably, the clamping plate is an arc-shaped plate, the convex surface of the clamping plate is fixedly connected to the second threaded rod, and the clamping surface of the clamping plate is fixedly provided with a rubber pad.

[0012] Preferably, a handle is fixedly connected to the side of the gear ring away from the support ring.

[0013] Preferably, a mounting groove is formed on the outer peripheral surface of the gear ring, and three support frames are fixedly arranged on the support ring. The support frames are inserted into the mounting groove and are slidably connected to the mounting groove.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model is provided with a support ring, a threaded rod, a threaded sleeve, a gear, a pressing bracket and a gear ring. The handle is turned to drive the gear ring, the gear and the threaded sleeve to rotate, so that the threaded rod slides, and the pressing bracket moves, so that the clamp clamps the shaft. The nut, the gasket, the spring and the threaded column are provided, and the pressing bracket moves, so that the gasket slides and the spring is compressed, so as to control the clamping force. The problem that it is difficult to control the clamping force manually is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a clamping device for shaft casting processing proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of a limiting structure in a clamping device for shaft casting processing proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a threaded sleeve in a clamping device for shaft casting processing proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of grooves and convex blocks in a clamping device for shaft casting processing proposed by the utility model;

[0020] In the figure: 1. base; 2. support ring; 3. notch; 4. threaded sleeve; 5. threaded rod one; 6. pressure bracket; 7. threaded rod two; 8. nut; 9. gasket; 10. spring; 11. clamping plate; 12. gear ring; 13. mounting groove; 14. support frame; 15. handle; 16. gear; 17. groove; 18. slide; 19. support rod; 20. bump; 21. mounting hole. DETAILED DESCRIPTION

[0021] 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 of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0023] Reference Figure 1-3 A clamping device for shaft casting processing includes a base 1, a support ring 2 is fixedly connected to the top surface of the base 1, three threaded rods 5 are radially slidably arranged on the support ring 2, three evenly distributed grooves 3 are opened on the support ring 2, and the shaft can be clamped in three directions at the same time, a threaded sleeve 4 is rotatably arranged in the groove 3, and the threaded sleeve 4 is threadedly connected to the threaded rod 5. When the threaded sleeve 4 rotates, it will drive the threaded rod 5 to move axially.

[0024] A groove 17 is axially opened on the outer wall of the threaded rod 5, and a mounting hole 21 is opened on the outer wall of the support ring 2. The threaded rod 5 passes through the mounting hole 21. A protrusion 20 matching the groove 17 is fixedly set on the inner wall of the mounting hole 21. The groove 17 is slidably connected with the protrusion 20. The protrusion 20 restricts the threaded rod 5 from rotating and can only slide up and down, which is conducive to radially pushing the support 6.

[0025] Reference Figure 1 The support ring 2 is provided with a driving mechanism for driving multiple threaded sleeves 4 to rotate synchronously, and the driving mechanism can control the synchronous movement of multiple threaded rods 5.

[0026] The driving mechanism includes a gear ring 12 rotatably arranged on the support ring 2, and a gear 16 is provided on the fixed sleeve outside the threaded sleeve 4. The gear 16 is meshed with the gear ring 12. The rotation of the gear ring 12 drives the gear 16 meshed with it to rotate, and at the same time drives the threaded sleeve 4 fixedly connected to the gear 16 to rotate, so that the threaded rod 5 can move. The movement of the gear ring 12 will drive the three gears 16 to move synchronously, and at the same time drive the three threaded sleeves 4 to drive the three threaded rods 5 to move radially together, which is conducive to driving the three threaded rods 5 to move simultaneously and improving work efficiency.

[0027] A handle 15 is fixedly connected to the side of the gear ring 12 away from the support ring 2. Turning the handle 15 can drive the gear ring 12 to rotate, which is convenient for operators to operate.

[0028] An installation groove 13 is provided on the outer circumference of the gear ring 12, and three support frames 14 are fixedly arranged on the support ring 2. The support frames 14 are inserted into the installation groove 13 and are slidably connected with the installation groove 13 to limit the gear ring 12 so that the gear ring 12 can only rotate at a certain position to ensure that the gear 16 is meshed and connected with the gear ring 12.

[0029] Reference Figure 2-4 The end of the threaded rod 5 is fixedly connected to a pressure bracket 6, and the end of the pressure bracket 6 is fixedly connected to a gasket 9. A threaded rod 2 7 is arranged on the gasket 9, and a clamping plate 11 is fixedly connected to the end of the threaded rod 2 7. The movement of the threaded rod 5 drives the pressure bracket 6 to move radially, and at the same time drives the clamping plate 11 to clamp the shaft body. A spring 10 is fixedly arranged between the clamping plate 11 and the gasket 9. When the spring 10 is deformed, the deformation of the spring 10 can be observed to determine whether the clamping plate 11 is clamped. The threaded rod 2 7 is threadedly connected to a nut 8, and the nut 8 is in the pressure bracket 6. The operator twists the nut 8 and rotates along the threaded rod 2 7 to compress the spring 10, so that the force required for the deformation of the spring 10 changes. When the shaft body is clamped by the clamping plate 11, the force required for the deformation of the spring 10 is different, so that the operator can control the size of the clamping force. A limiting structure for limiting the axial rotation of the threaded rod 2 7 is arranged between the clamping plate 11 and the gasket 9.

[0030] The limiting structure includes two slides 18 fixedly connected to the gasket 9 and a support rod 19 fixedly connected to the convex surface of the clamp plate 11. The slide 18 is slidably connected to the support rod 19. When the operator turns the nut 8, the threaded rod 27 will be driven to move, and the slide 18 will be driven to slide along the support rod 19. The function of the slide 18 and the support rod 19 is to limit the axial rotation of the threaded rod 27 and ensure the stability of the threaded rod 27. When the nut 8 is adjusted, the threaded rod 27 will move up and down along the support rod 19.

[0031] The clamping plate 11 is an arc-shaped plate, the convex surface of the clamping plate 11 is fixedly connected to the threaded rod 7, and the concave surface is the clamping surface, so that the clamping plate 11 can fit the outer peripheral contour of the shaft body, increase the contact area of ​​the clamping, and is conducive to clamping the shaft body. The clamping surface of the clamping plate 11 is fixedly provided with a rubber pad to prevent the clamping plate 11 from damaging the surface of the shaft body.

[0032] The specific working principle of the utility model is as follows:

[0033] When the shaft body needs to be clamped, the handle 15 is first turned to drive the gear ring 12 to rotate under the limit of the three support frames 14. The movement of the gear ring 12 will drive the three gears 16 to move synchronously, and at the same time drive the three threaded sleeves 4 to drive the three threaded rods 5 to move radially together, and the threaded rod 5 rises and falls, thereby changing the position of the pressing bracket 6. When the threaded rod 5 descends, it drives the pressing bracket 6 to slide downward, pushing the clamping plate 11 to clamp the shaft body. A spring 10 is fixed between the clamping plate 11 and the gasket 9. When the spring 10 is deformed, it is determined whether the clamping plate 11 is clamped by observing the deformation of the spring 10. The operator turns the nut 8 to rotate along the threaded rod 27, driving the slide 18 to slide along the support rod 19. When the slide 18 slides, the spring 10 is compressed, so that the force required for the deformation of the spring 10 changes. When the shaft body is clamped by the clamping plate 11, the force required for the deformation of the spring 10 is different, thereby realizing the operator's control over the clamping force.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A clamping device for shaft casting processing, comprising a base (1), characterized in that: The top surface of the base (1) is fixedly connected to a support ring (2), three threaded rods (5) are radially slidably arranged on the support ring (2), three evenly distributed notches (3) are opened on the support ring (2), a threaded sleeve (4) is rotatably arranged in the notch (3), the threaded sleeve (4) is threadedly connected to the threaded rod (5), a driving mechanism for driving the multiple threaded sleeves (4) to rotate synchronously is provided on the support ring (2), and a pressing bracket (6) is fixedly connected to the end of the threaded rod (5) The end of the pressure bracket (6) is fixedly connected with a gasket (9), the gasket (9) is provided with a second threaded rod (7), the second threaded rod (7) is threadedly connected with a nut (8), the nut (8) is inside the pressure bracket (6), the end of the second threaded rod (7) is fixedly connected with a clamping plate (11), a spring (10) is fixedly provided between the clamping plate (11) and the gasket (9), and a limiting structure for limiting the axial rotation of the second threaded rod (7) is provided between the clamping plate (11) and the gasket (9).

2. A clamping device for shaft casting processing according to claim 1, characterized in that: The driving mechanism comprises a gear ring (12) rotatably arranged on a support ring (2); a gear (16) is arranged on an outer fixed sleeve of the threaded sleeve (4); and the gear (16) is meshingly connected with the gear ring (12).

3. The clamping device for shaft casting processing according to claim 1, characterized in that: The limiting structure comprises two sliding plates (18) fixedly connected to the gasket (9) and a support rod (19) fixedly connected to the convex surface of the clamping plate (11), and the sliding plates (18) are slidably connected to the support rod (19).

4. The clamping device for shaft casting processing according to claim 1, characterized in that: The outer wall of the threaded rod (5) is axially provided with a groove (17), the support ring (2) is provided with a mounting hole (21), the threaded rod (5) passes through the mounting hole (21), a protrusion (20) matching the groove (17) is fixedly provided on the inner wall of the mounting hole (21), and the groove (17) is slidably connected to the protrusion (20).

5. The clamping device for shaft casting processing according to claim 1, characterized in that: The clamping plate (11) is an arc-shaped plate, the convex surface of the clamping plate (11) is fixedly connected to the second threaded rod (7), and the clamping surface of the clamping plate (11) is fixedly provided with a rubber pad.

6. The clamping device for shaft casting processing according to claim 2, characterized in that: A handle (15) is fixedly connected to the side of the toothed ring (12) away from the support ring (2).

7. The clamping device for shaft casting processing according to claim 2, characterized in that: The outer circumferential surface of the gear ring (12) is provided with a mounting groove (13), and three support frames (14) are fixedly arranged on the support ring (2). The support frames (14) are inserted into the mounting groove (13) and are slidably connected to the mounting groove (13).

Images