Clamping device suitable for camshafts of different sizes

Abstract

The utility model relates to the technical field of clamping tools, in particular to a cam shaft clamping device suitable for different sizes, which comprises a U-shaped mounting frame, two coaxially arranged threaded rods are symmetrically and rotatably mounted on the inner side of the mounting frame, and a connecting shaft is coaxially and integrally formed between the ends, close to each other, of the two threaded rods. And the directions of thread lines on the two threaded rods are opposite, each threaded rod is in threaded connection with a movable plate, the tops of the two movable plates are in limiting sliding connection with the inner wall of the top of the mounting frame, and limiting plates are fixedly connected to the two opposite side faces of the bottoms of the two movable plates. According to the utility model, the clamping of the camshaft by the two movable plates is realized through the two coaxial threaded rods which are symmetrically and rotatably mounted in the mounting frame. A connecting shaft is coaxially and integrally formed between the two threaded rods, so that the rotation synchronism is ensured; the directions of thread lines on the threaded rods are opposite, so that the two movable plates can move face to face or back to back to adapt to camshafts of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping tools, in particular to a camshaft clamping device suitable for different sizes. Background Art

[0002] The camshaft is an important component in machining, automobile repair and other related fields. Since camshafts come in many types and sizes, they often need to be clamped and fixed in different work scenarios. However, traditional clamping tools are often fixed in design and difficult to adapt to camshafts of different sizes, which brings great inconvenience to the staff.

[0003] Most of the clamping tools currently available on the market are designed for camshafts of specific sizes. When camshafts of different sizes need to be processed, different clamping tools need to be replaced, which not only reduces work efficiency, but also increases work costs and complexity. At the same time, frequent tool replacement may also lead to tool loss or damage, further affecting the workflow. In addition, although some adjustable clamping tools can adapt to camshafts of different sizes to a certain extent, the adjustment process is complicated, the operation is inconvenient, and the stability is poor, which cannot ensure the safety and stability of the camshaft during the clamping process; especially when performing precision machining or testing, any slight shake may affect the work quality and accuracy. In view of this, we propose a clamping device that can adapt to camshafts of different sizes. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a camshaft clamping device adaptable to different sizes.

[0005] The technical solution of the utility model is:

[0006] A camshaft clamping device that can adapt to different sizes includes a U-shaped mounting frame, two coaxially arranged threaded rods are symmetrically rotatably installed on the inner side of the mounting frame, a connecting shaft is coaxially integrally formed between the ends of the two threaded rods that are close to each other, the threads on the two threaded rods are in opposite directions, and each threaded rod is threadedly connected to a movable plate, the tops of the two movable plates are limitedly slidably connected to the top inner wall of the mounting frame, the opposite side surfaces of the bottoms of the two movable plates are fixedly connected to the limiting plates, the inner sides of the two limiting plates are provided with hemispherical grooves, and a first protective pad is fixed in the hemispherical grooves, and the middle part of the mounting frame is hingedly installed with two symmetrical bottom support structures.

[0007] As a preferred technical solution, one of the ends of the threaded rod is rotated to penetrate the side wall of the mounting frame and extends to the outside and is fixedly connected with a knob, and the size of the knob is the same as the size of a standard screw head.

[0008] As a preferred technical solution, a limiting slide groove is provided on the inner wall at the top of the mounting frame along the length direction, two limiting sliders are slidably arranged in the limiting slide groove, and the tops of the two movable plates are inserted into the limiting slide groove and are fixedly connected to the two limiting sliders respectively.

[0009] As a preferred technical solution, the bottom supporting structure includes a mounting plate hinged to the mounting frame by a hinge, and the two mounting plates are symmetrically arranged, and the ends of the two mounting plates close to each other are hingedly connected to the top of the mounting frame by hinges, and the ends of the two mounting plates far away from each other are provided with vertical plates that can be moved up and down, and the opposite sides of the bottom of the two vertical plates are integrally formed with horizontal plates.

[0010] As a preferred technical solution, a first bolt is provided at the top of the mounting plate, and the end of the first bolt is rotated through the mounting plate and threadedly inserted into the top of the vertical plate. Two guide shafts are fixedly connected at the bottom of the mounting plate and located on both sides of the first bolt, and the bottoms of the two guide shafts are inserted into the top of the vertical plate for sliding connection.

[0011] As a preferred technical solution, a connecting block is welded to the bottom of each of the transverse plates, and the two connecting blocks are connected by a second bolt.

[0012] As a preferred technical solution, a second protective pad is fixedly connected to the top of each transverse plate.

[0013] As a preferred technical solution, two fixing bars are symmetrically welded at both ends of the top of the mounting frame, and a movable rod is rotatably installed in each of the fixing bars. The ends of the two movable rods that are away from each other extend to the outside of the corresponding fixing bars and are coaxially integrally formed with handles.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model realizes the clamping of the camshaft by two movable plates by two coaxial threaded rods symmetrically rotated and installed in the mounting frame. A coaxial integrally formed connecting shaft is formed between the two threaded rods to ensure the synchronization of rotation. The threads on the threaded rods are in opposite directions, so that the two movable plates can move toward or away from each other to adapt to camshafts of different sizes. The limit plate and the first protective pad on the movable plate can effectively fix and protect the camshaft. In addition, the two bottom support structures hinged by the hinge in the middle of the mounting frame provide stable support for the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the overall structural diagrams of the utility model;

[0017] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0018] Figure 3 This is the third schematic diagram of the overall structure of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the bottom support structure in the utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. Mounting frame; 10. Limiting slide groove; 2. Bottom supporting structure; 20. Mounting plate; 21. Guide shaft; 22. First bolt; 23. Vertical plate; 24. Horizontal plate; 25. Second protective pad; 26. Connecting block; 27. Second bolt; 3. Hinge; 4. Fixing bar; 40. Movable rod; 41. Handle; 5. Movable plate; 50. Limiting plate; 51. First protective pad; 52. Limiting slider; 6. Threaded rod; 60. Connecting shaft; 61. Knob. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A camshaft clamping device adapted to different sizes comprises a U-shaped mounting frame 1, on the inner side of which two coaxially arranged threaded rods 6 are symmetrically rotatably mounted, a connecting shaft 60 is coaxially integrally formed between the ends of the two threaded rods 6 that are close to each other, the threads on the two threaded rods 6 are in opposite directions, and each threaded rod 6 is threadedly connected to a movable plate 5, the tops of the two movable plates 5 are limitedly slidably connected to the top inner wall of the mounting frame 1, the opposite sides of the bottoms of the two movable plates 5 are fixedly connected to the limiting plates 50, the inner sides of the two limiting plates 50 are provided with hemispherical grooves, and first protective pads 51 are fixed in the hemispherical grooves, and the middle part of the mounting frame 1 is hingedly mounted with two symmetrical bottom support structures 2 by a hinge 3.

[0025] The two movable plates 5 clamp the camshaft by two coaxial threaded rods 6 symmetrically rotated in the mounting frame 1. A coaxial connecting shaft 60 is formed between the two threaded rods 6 to ensure the synchronization of rotation. The threads on the threaded rods 6 are in opposite directions, so that the two movable plates 5 can move toward or away from each other to adapt to camshafts of different sizes. The limit plate 50 and the first protective pad 51 on the movable plate 5 can effectively fix and protect the camshaft. In addition, the two bottom support structures 2 hinged by the hinge 3 in the middle of the mounting frame 1 can provide stable support for the camshaft.

[0026] As a preferred embodiment of the present invention, one end of the threaded rod 6 is rotated to penetrate the side wall of the mounting frame 1 and extends to the outside and is fixedly connected with a knob 61, and the size of the knob 61 is the same as the size of a standard screw head. The position of the two movable plates 5 can be conveniently adjusted manually by the knob 61, so as to clamp camshafts of different sizes; and the size of the knob 61 is the same as the size of a standard screw head, which is easy to operate.

[0027] As a preferred embodiment of the present invention, a limiting slide groove 10 is provided on the inner wall of the top of the mounting frame 1 along the length direction, two limiting sliders 52 are slidably arranged in the limiting slide groove 10, and the tops of the two movable plates 5 are inserted into the limiting slide groove 10 and are respectively fixedly connected to the two limiting sliders 52. The setting of the limiting slide groove 10 and the limiting sliders 52 enables the movable plate 5 to remain stable during the movement and will not deviate from the predetermined track, thereby improving the stability and safety of the device.

[0028] As a preferred embodiment of the present invention, the bottom support structure 2 includes a mounting plate 20 hinged to the mounting frame 1 through a hinge 3, and the two mounting plates 20 are symmetrically arranged, and the ends of the two mounting plates 20 close to each other are hingedly connected to the top of the mounting frame 1 through the hinge 3, and the ends of the two mounting plates 20 far from each other are both provided with vertical plates 23 that can move up and down, and the opposite sides of the bottom of the two vertical plates 23 are both integrally formed with horizontal plates 24. The bottom support structure 2 is composed of the mounting plate 20, the vertical plate 23 and the horizontal plate 24, and can provide stable support for the camshaft. At the same time, the height of the vertical plate 23 can be adjusted by rotating the first bolt 22, so as to adapt to camshafts of different diameters.

[0029] As a preferred embodiment of the present invention, a first bolt 22 is provided at the top of the mounting plate 20, and the end of the first bolt 22 rotates through the mounting plate 20 and is threadedly inserted into the top interior of the vertical plate 23. The mounting plate 20 is fixedly connected to two guide shafts 21 located on both sides of the first bolt 22, and the bottoms of the two guide shafts 21 are inserted into the top interior of the vertical plate 23 for sliding connection. The first bolt 22 is rotatably connected to the mounting plate 20 through a bearing, so that the first bolt 22 can only rotate relative to the mounting plate 20 and cannot move up and down. The provision of the guide shaft 21 enables the vertical plate 23 to remain stable during the up and down movement without shaking or offsetting.

[0030] As a preferred embodiment of the present invention, a connecting block 26 is welded to the bottom of each transverse plate 24, and the two connecting blocks 26 are connected by a second bolt 27. The arrangement of the connecting block 26 and the second bolt 27 can further fix the two bottom support structures 2, thereby improving the stability and load-bearing capacity of the device.

[0031] As a preferred embodiment of the present invention, a second protective pad 25 is fixedly connected to the top of each transverse plate 24. The second protective pad 25 can effectively protect the camshaft from being damaged during the clamping and supporting process.

[0032] As a preferred embodiment of the present invention, two fixing bars 4 are symmetrically welded at both ends of the top of the mounting frame 1, and a movable rod 40 is rotatably mounted in each fixing bar 4. The ends of the two movable rods 40 that are away from each other extend to the outside of the corresponding fixing bar 4 and are coaxially integrally formed and fixed with a handle 41. The provision of the movable rod 40 and the handle 41 makes it easier for the device to move the camshaft after clamping the camshaft, thereby improving work efficiency.

[0033] When the camshaft clamping device of the utility model is used, first, the user can adjust the positions of the two movable plates 5 according to the size of the camshaft to be clamped by rotating the knob 61 located outside the mounting frame 1. Since the threads on the two threaded rods 6 are in opposite directions and they are coaxial and rotate synchronously through the connecting shaft 60, when the knob 61 is rotated, the two movable plates 5 will move toward or away from each other at the same time.

[0034] When the movable plate 5 moves to a proper position, the limiting plate 50 thereon will limit the camshaft to be clamped, and the hemispherical groove and the first protective pad 51 on the limiting plate 50 can ensure the stable placement of the camshaft and prevent it from being damaged.

[0035] Next, the user can further stabilize the camshaft by adjusting the bottom support structure 2. Specifically, the user can adjust the height of the vertical plate 23 by rotating the first bolt 22 so that the top of the horizontal plate 24 is in close contact with the bottom of the camshaft. During the adjustment process, the guide shaft 21 can ensure the vertical movement of the vertical plate 23 and prevent it from shaking or deflecting.

[0036] When the height of the vertical plate 23 is adjusted appropriately, the horizontal plate 24 provides additional support for the camshaft to be clamped. At this time, the second protective pad 25 can effectively protect the camshaft and prevent it from being damaged during the clamping and supporting process.

[0037] In order to further enhance the stability of the device, the user may also connect the two bottom support structures 2 together through the connecting block 26 and the second bolt 27, thereby improving the load-bearing capacity and overall stability of the device.

[0038] Finally, when the user needs to move the device, he can do so by holding the handle 41. This design makes the device more convenient when clamping and moving the camshaft, greatly improving work efficiency.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A camshaft clamping device adapted to different sizes, comprising a U-shaped mounting frame (1), characterized in that: Two coaxially arranged threaded rods (6) are symmetrically rotatably mounted on the inner side of the mounting frame (1); a connecting shaft (60) is coaxially formed between the ends of the two threaded rods (6) that are close to each other; the threads on the two threaded rods (6) are in opposite directions; and each threaded rod (6) is threadedly connected with a movable plate (5); the tops of the two movable plates (5) are limitedly slidably connected to the inner wall of the top of the mounting frame (1); the two opposite side surfaces of the bottom of the two movable plates (5) are fixedly connected with a limiting plate (50); the inner sides of the two limiting plates (50) are provided with hemispherical grooves, and a first protective pad (51) is fixed in the hemispherical grooves; and the middle part of the mounting frame (1) is hingedly mounted with two symmetrical bottom support structures (2) via hinges (3).

2. The camshaft clamping device adapted to different sizes as claimed in claim 1, characterized in that: One end of the threaded rod (6) is rotated to penetrate the side wall of the mounting frame (1) and extend to the outside and is fixedly connected to a knob (61). The size of the knob (61) is the same as that of a standard screw head.

3. The camshaft clamping device adapted to different sizes as claimed in claim 2, characterized in that: The inner wall at the top of the mounting frame (1) is provided with a limit slide groove (10) along the length direction, and two limit slide blocks (52) are slidably arranged in the limit slide groove (10). The tops of the two movable plates (5) are inserted into the limit slide groove (10) and are respectively fixedly connected to the two limit slide blocks (52).

4. The camshaft clamping device adapted to different sizes as claimed in claim 3, characterized in that: The bottom support structure (2) comprises a mounting plate (20) hingedly connected to the mounting frame (1) via a hinge (3), the two mounting plates (20) being symmetrically arranged, the ends of the two mounting plates (20) close to each other being hingedly connected to the top of the mounting frame (1) via the hinge (3), the ends of the two mounting plates (20) far from each other being both provided with vertical plates (23) movable up and down, and the opposite sides of the bottoms of the two vertical plates (23) being integrally formed with horizontal plates (24).

5. The camshaft clamping device adapted to different sizes as claimed in claim 4, characterized in that: A first bolt (22) is provided at the top of the mounting plate (20), and the end of the first bolt (22) is rotated to penetrate the mounting plate (20) and then threadedly inserted into the top interior of the vertical plate (23). Two guide shafts (21) are fixedly connected at the bottom of the mounting plate (20) and located on both sides of the first bolt (22), and the bottoms of the two guide shafts (21) are inserted into the top interior of the vertical plate (23) for sliding connection.

6. The camshaft clamping device adapted to different sizes as claimed in claim 5, characterized in that: A connecting block (26) is welded to the bottom of each transverse plate (24), and the two connecting blocks (26) are connected by a second bolt (27).

7. The camshaft clamping device adapted to different sizes as claimed in claim 6, characterized in that: A second protective pad (25) is fixedly connected to the top of each transverse plate (24).

8. The camshaft clamping device adapted to different sizes as claimed in claim 7, characterized in that: Two fixing bars (4) are symmetrically welded at both ends of the top of the mounting frame (1), and a movable rod (40) is rotatably mounted in each of the fixing bars (4). The ends of the two movable rods (40) that are away from each other extend to the outside of the corresponding fixing bars (4) and are coaxially integrally formed and fixed with a handle (41).

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