Supporting device for crankshaft machining

Abstract

The utility model relates to the technical field of machining auxiliary tools, and discloses a supporting device for crankshaft machining, which comprises a mounting beam, a guide seat fixedly mounted on the mounting beam, a cantilever fixedly mounted at the lower end of the mounting beam, and an oil cylinder rotationally connected to one end, far away from the mounting beam, of the cantilever and connected with an external pump station through an oil pipe. The end, away from the cantilever, of the oil cylinder penetrates through the mounting beam and extends into the guide base, and a mounting base is fixedly mounted at the output end of the oil cylinder. A mounting seat is arranged on the output end of the oil cylinder, a first wheel carrier and a bearing wheel are arranged in the mounting seat, one end of a crankshaft can be borne, a side plate is further arranged on one side of the guide seat, a lifting block is slidably connected into the side plate, a second wheel carrier is rotatably connected into the lifting block, and a limiting wheel is rotatably mounted in the second wheel carrier. Therefore, the crankshaft with the diameter can be matched with the two bearing wheels to limit the crankshaft, the convenience of supporting operation of one end of the crankshaft is improved, and the adaptability to crankshafts with different diameters is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools for machining, and in particular to a support device for crankshaft machining. Background Technology

[0002] The crankshaft is an important component of an engine, shaped like a curved shaft. Its main function is to convert the reciprocating linear motion of the piston into rotational motion, thereby driving other engine components, such as the camshaft and generator. Crankshafts are usually forged from high-strength alloy steel to withstand the enormous forces and torques generated when the engine is running.

[0003] When a crankshaft is machined, the end furthest from the chuck needs to be supported to prevent imbalance and deformation during rotation. This increases workpiece rigidity, effectively reduces deformation and vibration during machining, and ensures machining accuracy and workpiece quality. For example, Chinese utility model patent CN217667869U discloses a support device for crankshaft machining. This application uses a rolling assembly and a clamping assembly to support crankshafts with various degrees of eccentricity. The entire device clamps and holds the curved section of the crankshaft during machining. However, although the clamping assembly can roll through the rolling assembly, due to the special structure of the crankshaft, the clamping collar of the clamping assembly is a closed-loop structure, which cannot be easily inserted into the outside of the crankshaft. At the same time, although the application can clamp the crankshaft through the clamping air bladder inside the clamping collar, the overall expansion of the clamping air bladder is limited, which cannot adapt to a large number of crankshafts of different sizes, resulting in low applicability. Utility Model Content

[0004] The purpose of this invention is to provide a support device for crankshaft machining, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A crankshaft machining support device includes a mounting beam, a guide seat fixedly mounted on the mounting beam, a cantilever fixedly mounted at the lower end of the mounting beam, a hydraulic cylinder rotatably connected to the end of the cantilever away from the mounting beam, the hydraulic cylinder being connected to an external pump station via an oil pipe, the end of the hydraulic cylinder away from the cantilever extending through the mounting beam into the guide seat, and a mounting base fixedly mounted at the output end of the hydraulic cylinder, the mounting base being located above the guide seat, a first wheel frame fixedly mounted inside the mounting base, two support wheels rotatably mounted inside the first wheel frame, a side plate fixedly mounted on one side of the guide seat, a lifting groove formed in the side plate, a lifting block movably connected in the lifting groove, a mounting groove formed in the lifting block, a second wheel frame rotatably connected in the mounting groove, and a limit wheel rotatably connected in the second wheel frame.

[0007] As a further preferred embodiment of this utility model, two guide plates are fixedly installed at the lower end of the mounting base, and the two guide plates are respectively inserted into one side of the guide seat. The lower end of the mounting base is installed on the output end of the hydraulic cylinder, and two guide plates are respectively inserted into one side of the guide seat at the lower end of the mounting base. This can improve the stability of the hydraulic cylinder when lifting and lowering the mounting base, so that the mounting base can stably support one end of the crankshaft with the help of two support rollers.

[0008] As a further preferred embodiment of this utility model, guide rails are fixedly installed on both sides of the lifting groove, and a lifting groove is opened in the side plate. A guide rail is fixedly installed on both sides of the lifting groove, which can provide conditions for the installation and height adjustment of the lifting block.

[0009] As a further preferred embodiment of this utility model, a flipping rod is rotatably connected to the upper part of the side plate. The flipping rod has a C-shaped structure, and an internally threaded hole seat is fixedly installed in the middle of the upper part of the flipping rod. The internally threaded hole seat is internally threaded with a limiting screw. The flipping rod is connected in the lifting groove, which can cooperate with the limiting screw to realize the angle limiting of the flipping rod. At the same time, it does not affect the flipping adjustment of the flipping rod.

[0010] As a further preferred embodiment of this utility model, the lifting block is provided with sliding grooves on both sides, the lifting block is inserted into the lifting grooves, and the two sliding grooves are respectively slidably connected to the corresponding guide rails. The lifting block can be adjusted in the lifting grooves to support and limit one end of the crankshaft of different diameters in conjunction with the limiting wheel and the two supporting wheels.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this invention, a mounting seat is provided on the output of the hydraulic cylinder, and a first wheel frame and a support wheel are provided inside the mounting seat to support one end of the crankshaft. A side plate is also provided on one side of the guide seat, and a lifting block is slidably connected inside the side plate. A second wheel frame is rotatably connected inside the lifting block, and a limiting wheel is rotatably installed inside the second wheel frame. Thus, the crankshaft can be limited according to its diameter by cooperating with the two support wheels, which improves the convenience of supporting one end of the crankshaft and enhances the applicability to crankshafts of different diameters. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

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

[0015] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Mounting beam; 2. Cantilever; 3. Hydraulic cylinder; 4. Guide seat; 5. Mounting seat; 6. First wheel frame; 7. Supporting wheel; 8. Side plate; 9. Lifting groove; 10. Lifting block; 11. Mounting groove; 12. Second wheel frame; 13. Limiting wheel; 14. Guide plate; 15. Guide rail; 16. Tilting rod; 17. Internal threaded hole seat; 18. Limiting screw; 19. Slide groove. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-3 As shown, the present invention provides a crankshaft machining support device, including a mounting beam 1, a guide seat 4 fixedly mounted on the mounting beam 1, a cantilever 2 fixedly mounted at the lower end of the mounting beam 1, a hydraulic cylinder 3 rotatably connected to the end of the cantilever 2 away from the mounting beam 1, the hydraulic cylinder 3 being connected to an external pump station via an oil pipe, the end of the hydraulic cylinder 3 away from the cantilever 2 extending through the mounting beam 1 into the guide seat 4, and a mounting base 5 fixedly mounted at the output end of the hydraulic cylinder 3, the mounting base 5 being located above the guide seat 4, a first wheel frame 6 fixedly mounted inside the mounting base 5, two supporting wheels 7 rotatably mounted inside the first wheel frame 6, a side plate 8 fixedly mounted on one side of the guide seat 4, a lifting groove 9 being opened in the side plate 8, a lifting block 10 being movably connected in the lifting groove 9, an installation groove 11 being opened in the lifting block 10, a second wheel frame 12 rotatably connected in the installation groove 11, and a limit wheel 13 rotatably connected in the second wheel frame 12.

[0019] like Figures 1-2 As shown, two guide plates 14 are fixedly installed at the lower end of the mounting base 5, and the two guide plates 14 are respectively inserted into one side of the guide seat 4. The lower end of the mounting base 5 is installed on the output end of the hydraulic cylinder 3, and the two guide plates 14 are respectively inserted into one side of the guide seat 4 at the lower end of the mounting base 5. This can improve the stability of the hydraulic cylinder 3 when lifting and lowering the mounting base 5, so that the mounting base 5 can stably support one end of the crankshaft with the help of two support rollers 7.

[0020] like Figure 1 , Figure 3As shown, guide rails 15 are fixedly installed on both sides of the lifting groove 9. The side plate 8 has a lifting groove 9, and a guide rail 15 is fixedly installed on both sides of the lifting groove 9, which provides conditions for the installation and height adjustment of the lifting block 10. A flipping rod 16 is rotatably connected to the upper part of the side plate 8. The flipping rod 16 has a C-shaped structure. An internal threaded hole seat 17 is fixedly installed in the upper middle part of the flipping rod 16. The internal threaded hole seat 17 is internally threaded and connected to a limiting screw 18. Connecting the flipping rod 16 in the lifting groove 9 can cooperate with the limiting screw 18 to limit the angle of the flipping rod 16. At the same time, it does not affect the flipping adjustment of the flipping rod 16. Sliding grooves 19 are opened on both sides of the lifting block 10. The lifting block 10 is inserted into the lifting groove 9, and the two sliding grooves 19 are slidably connected to the corresponding guide rails 15. The lifting block 10 is adjusted in height within the lifting groove 9, which can realize the limiting wheel 13 and the two supporting wheels 7 to support and limit one end of the crankshaft of different diameters.

[0021] It should be noted that this utility model is a support device for crankshaft machining. After one end of the crankshaft is installed in the chuck of the machine tool, the other end of the crankshaft is in a suspended state. At this time, one end of the machine tool tailstock can be adjusted, and the mounting beam 1 is installed on one side of the tailstock. Thus, while adjusting the machine tool tailstock, the position of the mounting beam 1 is adjusted, so that one side of the tailstock abuts against the end of the crankshaft away from the chuck. Then, the pump station is controlled by the external main controller to move the output end of the hydraulic cylinder 3 upward, thereby moving the mounting seat 5 upward. The two guide plates 14 at the lower end of the mounting seat 5 move upward on one side of the guide seat 4, so that the mounting seat 5 drives the two supporting rollers 7 to move upward synchronously through the first roller frame 6 and abut against the outside of the crankshaft, thereby supporting the crankshaft. Then, the second roller... The second wheel frame 12 rotates, causing one end of the second wheel frame 12 to rotate within the mounting groove 11. This allows the second wheel frame 12 to drive the limiting wheel 13 to be positioned above one end of the crankshaft. Then, by holding the operating end of the limiting screw 18, the rotating rod 16 is rotated within the mounting groove 11, so that the rotating rod 16 and the limiting screw 18 are respectively positioned above the second wheel frame 12. Subsequently, the operating end of the limiting screw 18 is rotated, causing the limiting screw 18 to rotate downward within the internal threaded hole seat 17. As a result, the lower end of the limiting screw 18 abuts against the second wheel frame 12 and applies a downward force to the second wheel frame 12, causing the second wheel frame 12 to drive the limiting wheel 13 to abut against the outside of the crankshaft. Thus, the two supporting wheels 7 and one limiting wheel 13 can achieve the functions of centering one end of the crankshaft and supporting it to prevent it from jumping.

[0022] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A support device for crankshaft machining, characterized in that: The system includes a mounting beam (1), on which a guide seat (4) is fixedly mounted. A cantilever (2) is fixedly mounted at the lower end of the mounting beam (1). A hydraulic cylinder (3) is rotatably connected to the end of the cantilever (2) away from the mounting beam (1). The hydraulic cylinder (3) is connected to an external pump station via an oil pipe. The end of the hydraulic cylinder (3) away from the cantilever (2) extends through the mounting beam (1) into the guide seat (4). A mounting base (5) is fixedly mounted at the output end of the hydraulic cylinder (3). The mounting base (5) is also located above the guide seat (4). At the location, a first wheel frame (6) is fixedly installed in the mounting base (5), and two supporting wheels (7) are rotatably installed in the first wheel frame (6). A side plate (8) is fixedly installed on one side of the guide seat (4). A lifting groove (9) is opened in the side plate (8). A lifting block (10) is movably connected in the lifting groove (9). An installation groove (11) is opened in the lifting block (10). A second wheel frame (12) is rotatably connected in the installation groove (11). A limit wheel (13) is rotatably connected in the second wheel frame (12).

2. The crankshaft machining support device according to claim 1, characterized in that: Two guide plates (14) are fixedly installed at the lower end of the mounting base (5), and the two guide plates (14) are respectively inserted into one side of the guide seat (4).

3. The crankshaft machining support device according to claim 1, characterized in that: Guide rails (15) are fixedly installed on both sides of the lifting groove (9).

4. The crankshaft machining support device according to claim 1, characterized in that: A flipping rod (16) is rotatably connected to the upper part of the side plate (8). The flipping rod (16) has a C-shaped structure. An internal threaded hole seat (17) is fixedly installed in the upper middle part of the flipping rod (16). The internal threaded hole seat (17) is internally threaded and connected to a limit screw (18).

5. A crankshaft machining support device according to claim 4, characterized in that: The lifting block (10) has sliding grooves (19) on both sides. The lifting block (10) is inserted into the lifting groove (9), and the two sliding grooves (19) are slidably connected to the corresponding guide rails (15).

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