Manual self-centering shaft part clamping mechanism

Abstract

The utility model relates to a manual self-centering shaft part clamping mechanism which comprises an up-down axial supporting plate, a plurality of sliding rails are fixedly connected to the supporting plate in the circumferential direction, a sliding block is inserted into each sliding rail, meanwhile, the upper end of the supporting plate is coaxially and rotationally connected with a positioning disc, the upper end of the positioning disc is rotationally connected with a plurality of up-down axial connecting pieces in the circumferential direction, and the upper end of the positioning disc is coaxially and rotationally connected with the sliding blocks. The multiple connecting pieces correspond to the multiple sliding blocks in a one-to-one mode, and therefore when the restraining connecting pieces are fixedly connected with the corresponding sliding blocks through the connecting rods, the sides, away from the sliding blocks, of the connecting pieces are fixedly connected with the vertical axial clamping pipes, and the central axes of the clamping pipes perpendicularly intersect with the central axes of the connecting rods; the distance between the clamping pipe and the central axis of the positioning disc can be gradually changed in the rotating process of the positioning disc, and the workpiece to be machined is clamped and fixed. Therefore, the upper end face of the positioning disc is fixedly connected with the grip, so that the purpose of manually rotating the positioning disc is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft parts processing devices, in particular to a manual self-centering shaft parts clamping mechanism. Background Art

[0002] Shaft parts have excellent transmission and connection effects. Therefore, in practice, many components have shaft parts inside.

[0003] In practice, shaft parts require a variety of unique processing processes depending on their application scenarios, such as quenching, drilling, grinding, etc.

[0004] In practice, due to the hardness of shaft parts, a corresponding clamping mechanism needs to be set up during the processing to keep the position unchanged during the processing. However, since some processing steps have little effect on the external force applied to the shaft, such as quenching, end drilling, etc., the processing time of this type of process is short. Therefore, if all electronic machinery is used, such as the combination of screw and drive motor, hydraulic cylinder and telescopic rod, not only the processing time is long, but also the maintenance cost is high.

[0005] Therefore, we believe that there is a need for a manual self-centering shaft parts clamping mechanism that can be simplified and manually driven to complete the clamping effect on the ends of shaft parts. Summary of the invention

[0006] In view of the deficiencies in the prior art, the utility model proposes a manual self-centering shaft parts clamping mechanism, which has the advantages of simple structure and manual operation, and solves the shortcomings of the prior art devices, such as long electronic mechanical operation time and high maintenance cost.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A manual self-centering shaft parts clamping mechanism comprises an upper and lower axial support plate, a plurality of slide rails are circumferentially fixedly connected to the support plate, a slider is inserted in each slide rail, a positioning plate is coaxially rotatably connected to the upper end of the support plate, a plurality of upper and lower axial connecting members are circumferentially rotatably connected to the upper end of the positioning plate, the plurality of connecting members correspond to the plurality of slide blocks one by one, each of the connecting members is fixedly connected to the corresponding slide block through a connecting rod, and a clamping tube is fixedly connected to the side of the connecting member away from the slide block, the central axis of the clamping tube is perpendicular to the central axis of the connecting rod, the workpiece to be processed is located between the plurality of clamping tubes, a handle is fixedly connected to the upper end face of the positioning plate, and the central axis of the handle coincides with the diameter line of the positioning plate.

[0009] Preferably, a bearing I is provided at the upper end of the support plate, the inner ring of the bearing I is coaxially fixedly connected to the support plate, the outer ring of the bearing I is coaxially fixedly connected to the support disk, a through hole is coaxially penetrated on the connecting piece, a bearing II is inserted in the through hole, and the connecting piece is rotatably connected to the positioning disk through the bearing II.

[0010] Preferably, the positioning plate is provided with a limit plate, and a plurality of upper and lower axial mounting tubes are circumferentially arranged between the limit plate and the positioning plate. The plurality of mounting tubes correspond one-to-one to the plurality of bearings II. The inner ring of each bearing II is sleeved on the outer side of the corresponding mounting tube and is coaxially fixedly connected to the mounting tube. The outer ring of each bearing II is coaxially fixedly connected to the corresponding connecting piece.

[0011] Preferably, a limiting hole is coaxially provided on the limiting plate, and the workpiece to be processed is inserted into the limiting hole.

[0012] Preferably, each of the slide rails is fixedly connected to the support plate by bolts, a bolt is respectively provided at both ends of each slide rail, and a portion of the bolt located in the slide rail is in the same horizontal plane as the slider.

[0013] Preferably, a compensating ring sleeve made of elastic material is sleeved on the outer side of the clamping tube, and a longitudinal anti-slip groove is provided on the compensating ring sleeve.

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

[0015] The utility model utilizes the motion trajectory of the slider of the slide rail for constraint, and cooperates with a connecting piece that is fixedly connected with the slider through a connecting rod, so that the distance between the clamping tube and the central axis of the positioning disk can be gradually changed during the rotation of the positioning disk, thereby achieving clamping and fixing of the workpiece to be processed.

[0016] The utility model utilizes the characteristic that the central axis of the connecting rod is not facing the central axis of the positioning disk, so that the thrust in the horizontal direction applied by the clamping tube to the workpiece to be processed is also not toward the central axis of the carton positioning disk. Compared with the traditional thrust in the horizontal direction pointing to the central axis of the workpiece to be processed, this can provide a greater clamping force for the workpiece to be processed and further avoid positional displacement of the workpiece to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cooperation between the bearing I and the positioning plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the position relationship between the installation pipe and the limit plate of the utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation between the connecting piece and the connecting rod of the utility model;

[0021] Figure 5 This is a schematic diagram of the connection between the connecting rod and the slider of the utility model.

[0022] In the figure: 1. support plate; 2. positioning plate; 3. limit plate; 4. slide rail; 5. handle; 6. clamping tube; 7. bearing I; 8. bolt; 9. mounting tube; 10. bearing II; 11. slider; 12. connecting rod; 13. connecting piece; 14. compensation ring sleeve; 15. workpiece to be processed. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "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, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Please refer to Figure 1-5 A manual self-centering shaft parts clamping mechanism includes a support plate 1 for positioning and main supporting functions. In practice, the support plate 1 can be regarded as a workbench in the prior art device. In this application, it is simplified to support plate 1 for ease of understanding.

[0026] Specifically, in the device, a positioning plate 2 is coaxially rotatably connected to the upper end of the support plate 1, and a plurality of upper and lower axial connecting members 13 are circumferentially rotatably connected to the upper end of the positioning plate 2.

[0027] Meanwhile, a plurality of slide rails 4 are fixedly connected to the support plate 1 in the circumferential direction, and a slider 11 is inserted into each slide rail 4 , so that the plurality of connectors 13 are constrained to correspond to the plurality of sliders 11 one by one.

[0028] Therefore, by providing a connecting rod 12 between the connecting member 13 and the slider 11, the connecting member 13 is constrained to be fixedly connected with the corresponding slider 11 through the connecting rod 12. During the rotation of the positioning plate 2, the slider 11 can slide in the slide rail 4 to avoid travel conflict between the positioning plate 2 and the connecting member 13.

[0029] Specifically, the device is fixedly connected with an upper and lower axial clamping tube 6 on the side of the connecting member 13 away from the slider 11, and the central axis of the clamping tube 6 is constrained to intersect vertically with the central axis of the connecting rod 12. Therefore, the distance between the clamping tube 6 and the central axis of the positioning plate 2 can be changed during the rotation of the positioning plate 2. This can clamp and fix the workpiece 15 to be processed placed between multiple clamping tubes 6.

[0030] At the same time, as the positioning disk 2 rotates, the clamping tube 6 and the workpiece 15 to be processed have an interference fit, and the clamping tube 6 can be used to apply a thrust to the workpiece 15 in a horizontal direction that is not toward the central axial direction of the positioning disk 2. This method uses multiple clamping tubes 6 to jointly apply such a horizontal thrust to the workpiece 15 to be processed. Compared with the traditional technical device that only applies a horizontal thrust to the workpiece 15 but toward the central axis of the positioning disk 2, it can provide a greater clamping force for the workpiece 15 to be processed, and further ensure that the workpiece 15 to be processed will not move.

[0031] Specifically, in order to realize manual operation, the device is fixedly connected with a handle 5 on the upper end surface of the positioning disk 2, and the central axis of the handle 5 is constrained to coincide with the diameter line of the positioning disk 2. This can be achieved by rotating the positioning disk 2 and the support plate 1, so that the operator can rotate the positioning disk 2 through the handle 5 to make it rotate in the expected direction.

[0032] Furthermore, in order to reduce the frictional resistance encountered by the operator during the process of rotating the positioning disk 2 and reduce the burden on the operator, the device is provided with a bearing Ⅰ7 at the upper end of the support plate 1, and the inner ring of the constraint bearing Ⅰ7 is coaxially fixedly connected to the support plate 1, and the outer ring of the bearing Ⅰ7 is coaxially fixedly connected to the support disk. A through hole is coaxially penetrated on the connecting member 13 of the device, and a bearing Ⅱ10 is inserted in the through hole. The constraint connecting member 13 is rotatably connected to the positioning disk 2 through the bearing Ⅱ10, thereby utilizing the bearing Ⅰ7 and the bearing Ⅱ10 to reduce the frictional resistance encountered by the positioning disk 2 during rotation.

[0033] Specifically, the positioning plate 2 is provided with a limit plate 3, and a plurality of upper and lower axial mounting tubes 9 are circumferentially arranged between the limit plate 3 and the positioning plate 2. The plurality of mounting tubes 9 correspond one-to-one to the plurality of bearings II 10. Therefore, the inner ring of the bearing II 10 is sleeved on the outer side of the corresponding mounting tube 9 and is coaxially fixedly connected to the mounting tube 9. The outer ring of each bearing II 10 is coaxially fixedly connected to the corresponding connecting piece 13. This enables the connecting piece 13 to be rotatably connected to the positioning plate 2 through the bearing II 10.

[0034] Furthermore, by utilizing the limiting holes formed through the limiting plate 3 , the workpiece 15 to be processed that is inserted between the plurality of clamping tubes 6 can be initially positioned.

[0035] Furthermore, the constraint slide rail 4 of the device is fixedly connected to the support plate 1 by bolts 8.

[0036] Therefore, when a slide rail 4 is respectively provided at both ends of each slide rail 4, and the portion of the bolt 8 located in the slide rail 4 is in the same horizontal plane as the slider 11, the bolt 8 can be used to constrain the sliding motion trajectory, thereby realizing the constraint of the motion trajectory of the clamping tube 6. This can ensure that the thrust applied by the clamping tube 6 to the workpiece 15 to be processed can constrain the workpiece 15 to be processed, and avoid the horizontal thrust of the workpiece 15 to be processed being too small due to the angle temperature.

[0037] Furthermore, the device is provided with a compensation ring sleeve 14 made of elastic material on the outside of the clamping tube 6, and a longitudinal anti-slip groove is opened on the compensation ring sleeve 14, so as to increase the contact area and friction resistance between the workpiece 15 to be processed and the device, and ensure that the clamping tube 6 and the support of the workpiece 15 to be processed have a clamping stability point with sufficient area and sufficient pressure.

[0038] The utility model is actually used;

[0039] First, the user inserts the workpiece 15 to be processed into the limiting hole to complete the initial position constraint of the workpiece 15. At this time, the angle between the central axis of the workpiece 15 to be processed and the horizontal plane should be less than 90 degrees and greater than 60 degrees;

[0040] Afterwards, the user holds the handle 5 and rotates the positioning disk 2. During this process, the distance between the clamping tube 6 and the positioning disk 2 gradually decreases, and the slider 11 moves in the slide rail 4 in a direction away from the positioning disk 2.

[0041] Finally, as the user continues to rotate the positioning plate 2 , the compensation ring sleeve 14 comes into contact with the workpiece 15 to be processed, and the compensation ring sleeve 14 is deformed by force, so that the device forms a stable clamping for the workpiece 15 to be processed.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual self-centering shaft parts clamping mechanism, characterized in that: It comprises an upper and lower axial support plate (1), a plurality of slide rails (4) are fixedly connected circumferentially to the support plate (1), and a sliding block (11) is inserted into each slide rail (4); The upper end of the support plate (1) is coaxially rotatably connected to a positioning plate (2), and the upper end of the positioning plate (2) is circumferentially rotatably connected to a plurality of upper and lower axial connecting members (13), and the plurality of connecting members (13) correspond one to one to the plurality of sliding blocks (11); Each of the connecting members (13) is fixedly connected to the corresponding slider (11) via a connecting rod (12), and a clamping tube (6) is fixedly connected to the connecting member (13) on the side away from the slider (11) in an upper and lower axial direction, the central axis of the clamping tube (6) intersects the central axis of the connecting rod (12) vertically, and the workpiece (15) to be processed is located between the plurality of clamping tubes (6); The upper end surface of the positioning disk (2) is fixedly connected with a handle (5), and the central axis of the handle (5) coincides with the diameter line of the positioning disk (2).

2. A manual self-centering shaft parts clamping mechanism according to claim 1, characterized in that: A bearing I (7) is disposed at the upper end of the support plate (1), the inner ring of the bearing I (7) is coaxially fixedly connected to the support plate (1), and the outer ring of the bearing I (7) is coaxially fixedly connected to the support plate; A through hole is coaxially formed on the connecting member (13), a bearing II (10) is inserted into the through hole, and the connecting member (13) is rotatably connected to the positioning plate (2) via the bearing II (10).

3. A manual self-centering shaft parts clamping mechanism according to claim 2, characterized in that: The positioning plate (2) is provided with a limiting plate (3), and a plurality of upper and lower axial mounting tubes (9) are circumferentially arranged between the limiting plate (3) and the positioning plate (2), and the plurality of mounting tubes (9) correspond one to one with the plurality of bearings II (10); The inner ring of each bearing II (10) is sleeved on the outside of the corresponding mounting tube (9) and is coaxially fixedly connected to the mounting tube (9), and the outer ring of each bearing II (10) is coaxially fixedly connected to the corresponding connecting piece (13).

4. A manual self-centering shaft parts clamping mechanism according to claim 3, characterized in that: The limiting plate (3) is coaxially provided with a limiting hole, and the workpiece (15) to be processed is inserted into the limiting hole.

5. The manual self-centering shaft parts clamping mechanism according to claim 1, characterized in that: Each of the slide rails (4) is fixedly connected to the support plate (1) via a bolt (8), a bolt (8) is provided at each end of each slide rail (4), and the portion of the bolt (8) located inside the slide rail (4) is in the same horizontal plane as the slider (11).

6. A manual self-centering shaft parts clamping mechanism according to claim 1, characterized in that: The outer side of the clamping tube (6) is sleeved with a compensation ring sleeve (14) made of elastic material, and a longitudinal anti-slip groove is provided on the compensation ring sleeve (14).

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