Fixing jig for crankshaft machining

Abstract

The utility model belongs to the technical field of crankshaft fixing jigs, and discloses a fixing jig for crankshaft machining, which comprises a bearing plate, a second mounting plate is arranged above the bearing plate, fixing plates are mounted on two sides of the upper end face of the second mounting plate, transverse first threaded grooves are formed in the two fixing plates, and a second mounting plate is arranged above the bearing plate. First threaded grooves are formed in the two ends of the base, first threaded rods penetrating through the two first threaded grooves in a screwed mode are arranged in the two first threaded grooves, first clamping plates are installed at the ends, close to each other, of the two first threaded rods, a plurality of installation grooves are formed in the first clamping plates, and clamping assemblies are arranged in the installation grooves. The first threaded rod drives the first clamping plate to be attached to the outer wall of the crankshaft to conduct preliminary clamping, the second threaded rod drives the second clamping plate to conduct fine clamping on the crankshaft, the preliminary clamping and the fine clamping are combined, the whole machining process can be optimized, the crankshaft is not prone to falling off, and controllability and flexibility of the machining process are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crankshaft fixing fixtures, and particularly relates to a fixing fixture for crankshaft machining. Background Technique

[0002] A crankshaft fixing fixture is a tool specifically used for crankshaft machining. It is used to fix the crankshaft during the machining process to ensure machining accuracy and efficiency. The crankshaft is a very important component in the engine, and its machining quality directly affects the performance and service life of the engine. Therefore, using a suitable fixing fixture is crucial for ensuring the machining quality of the crankshaft.

[0003] When the existing fixing fixture for crankshaft machining is in use, the fixture is clamped by setting a single clamping plate. The single clamping plate results in poor stability of the equipment, making the crankshaft prone to falling off. Also, when clamping, the equipment is easily affected by external vibrations and impacts. The vibrations and impact forces will increase the wear of the fixture, thus affecting the service life of the equipment. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fixing fixture for crankshaft machining to solve the problems in the above background technique that the single clamping plate causes poor stability of the equipment, making the crankshaft prone to falling off, and when clamping, the equipment is easily affected by external vibrations and impacts. The vibrations and impact forces will increase the wear of the fixture, thus affecting the service life of the equipment.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A fixing fixture for crankshaft machining, comprising: a bearing plate, a bearing column is installed on the upper end surface of the bearing plate, a first mounting plate is fixed at the top of the bearing column, a connecting plate is fixed on the first mounting plate, a rotating assembly is installed on the connecting plate, the output end of the rotating assembly is connected with a second mounting plate, fixing plates are installed on both sides of the upper end surface of the second mounting plate, first threaded grooves in the horizontal direction are opened on both fixing plates, first threaded rods are rotatably passed through the two first threaded grooves, first clamping plates are installed at the ends of the two first threaded rods close to each other, a plurality of mounting grooves are opened on the first clamping plates, and clamping assemblies are arranged in the plurality of mounting grooves.

[0006] Preferably, the clamping assembly includes a second clamping plate, a second threaded groove and a second threaded rod. The second clamping plate is located in the mounting groove, the second threaded groove is opened on the first clamping plate, the second threaded rod is rotatably passed through the second threaded groove, and the second threaded rod is connected with the second clamping plate. Anti-slip grooves are opened on the outer wall of the second clamping plate.

[0007] Preferably, the rotating assembly includes a rotating motor and a rotating shaft. The rotating motor is installed on the connecting plate, and the rotating shaft is connected to the output end of the rotating motor.

[0008] Preferably, a support plate is provided below the bearing plate. A hollow cylinder is installed on the upper end surface of the support plate. A piston plate is provided inside the hollow cylinder. A support column is connected to the piston plate, and the top end of the support column is connected to the lower end surface of the bearing plate. A spring is connected between the piston plate and the bottom end of the inner wall of the hollow cylinder.

[0009] Preferably, a liquid storage tank is provided on one side of the hollow cylinder. A connecting pipe is installed between the liquid storage tank and the lower part of the hollow cylinder. A liquid inlet pipe is connected above the liquid storage tank.

[0010] Preferably, a cover body is installed on the liquid inlet pipe. A third thread groove is provided on the inner wall of the cover body. An external thread is provided on the outer wall of the liquid inlet pipe. The third thread groove and the external thread are adapted to each other.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] (1) By providing the first threaded rod, the first clamping plate, the second threaded rod and the second clamping plate, etc., the crankshaft is not easily detached. During use, the first threaded rod drives the first clamping plate to fit the outer wall of the crankshaft for preliminary clamping, and the second threaded rod drives the second clamping plate to finely clamp the crankshaft. The combination of preliminary clamping and fine clamping can optimize the entire processing process, make the crankshaft not easily detached, and improve the controllability and flexibility of the processing process.

[0013] (2) By providing the piston plate, the connecting pipe and the spring, etc., the vibration received by the equipment is reduced. During use, the piston plate moves inside the hollow cylinder to press the liquid to flow in and out of the connecting pipe. The liquid flow generates a damping effect, and the spring can absorb part of the vibration and impact energy, thereby reducing the influence of the vibration and impact force received by the upper clamping assembly above, and prolonging its service life. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the first clamping plate of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the rotating assembly of the present utility model;

[0017] Figure 4 is a cross-sectional view of the hollow cylinder of the present utility model;

[0018] Figure 5 is Figure 2 the enlarged view of part A in

[0019] Figure 6 isFigure 4 Enlarged view of part B in

[0020] In the figure: 1, bearing plate; 2, bearing column; 3, first mounting plate; 4, connecting plate; 5, second mounting plate; 6, fixing plate; 7, first threaded groove; 8, first threaded rod; 9, first clamping plate; 10, mounting groove; 11, second clamping plate; 12, second threaded groove; 13, second threaded rod; 14, anti-slip groove; 15, rotating motor; 16, rotating shaft; 17, support plate; 18, hollow cylinder; 19, piston plate; 20, support column; 21, spring; 22, liquid storage tank; 23, connecting pipe; 24, liquid inlet pipe; 25, cover body; 26, third threaded groove; 27, external thread. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5 As shown in the figure, the present invention provides the following technical solutions: A fixing jig for crankshaft processing, comprising: a bearing plate 1, a bearing column 2 is installed on the upper end surface of the bearing plate 1, a first mounting plate 3 is fixed at the top of the bearing column 2, a connecting plate 4 is fixed on the first mounting plate 3, a rotating assembly is installed on the connecting plate 4, the output end of the rotating assembly is connected to a second mounting plate 5, fixing plates 6 are installed on both sides of the upper end surface of the second mounting plate 5, horizontal first threaded grooves 7 are opened on both fixing plates 6, first threaded rods 8 are screwed through both first threaded grooves 7, first clamping plates 9 are installed at the ends of the two first threaded rods 8 close to each other, and a plurality of mounting grooves 10 are opened on the first clamping plates 9, and clamping assemblies are arranged in the plurality of mounting grooves 10.

[0023] Further, the clamping assembly includes a second clamping plate 11, a second threaded groove 12 and a second threaded rod 13. The second clamping plate 11 is located in the mounting groove 10, the second threaded groove 12 is opened on the first clamping plate 9, the second threaded rod 13 is screwed through the second threaded groove 12, and the second threaded rod 13 is connected to the second clamping plate 11. Anti-slip grooves 14 are opened on the outer wall of the second clamping plate 11.

[0024] Further, the rotating assembly includes a rotating motor 15 and a rotating shaft 16. The rotating motor 15 is installed on the connecting plate 4, and the rotating shaft 16 is connected to the output end of the rotating motor 15.

[0025] Through the above technical solutions:

[0026] During use, place the crankshaft between the two first clamping plates 9. Then, turn the first threaded rod 8. Through the interaction between the first threaded rod 8 and the first threaded groove 7, drive the first clamping plate 9 to move until the first clamping plate 9 fits against the outer wall of the crankshaft for preliminary clamping. Preliminary clamping can quickly position the crankshaft and provide a rough reference for subsequent fine clamping and processing, which can reduce the time required for fine clamping and improve the overall processing efficiency. Then, turn each second threaded rod 13. Through the interaction between the second threaded rod 13 and the second threaded groove 12, drive the second clamping plate 11 to move until each second clamping plate 11 tightly fits against the outer wall of the crankshaft for fine clamping of the crankshaft. Fine clamping can enhance the stability of the crankshaft fixation, making the crankshaft not easily fall off. The combination of preliminary clamping and fine clamping can optimize the entire processing process and improve the controllability and flexibility of the processing process. The anti-slip groove 14 can increase the friction between the crankshaft and the second clamping plate 11, further making the crankshaft not easily slide off. When it is necessary to adjust the direction of the clamping assembly, start the rotating motor 15. The rotating motor 15 drives the second mounting plate 5 to rotate through the rotating shaft 16, thereby adjusting the direction of the upper clamping assembly to meet different working requirements.

[0027] Please refer to Figure 1 、 Figure 4 and Figure 6 As shown, a support plate 17 is provided below the bearing plate 1. The upper end surface of the support plate 17 is provided with a hollow cylinder 18. A piston plate 19 is provided inside the hollow cylinder 18. A support column 20 is connected to the piston plate 19, and the top end of the support column 20 is connected to the lower end surface of the bearing plate 1. A spring 21 is connected between the piston plate 19 and the bottom end of the inner wall of the hollow cylinder 18.

[0028] Furthermore, a liquid storage tank 22 is provided on one side of the hollow cylinder 18. A connecting pipe 23 is installed between the liquid storage tank 22 and the lower part of the hollow cylinder 18. A liquid inlet pipe 24 is connected above the liquid storage tank 22.

[0029] Furthermore, a cover body 25 is installed on the liquid inlet pipe 24. A third threaded groove 26 is provided on the inner wall of the cover body 25, and an external thread 27 is provided on the outer wall of the liquid inlet pipe 24. The third threaded groove 26 and the external thread 27 are adapted to each other.

[0030] Through the above technical solutions:

[0031] In use, open the cover body 25, introduce liquid into the liquid storage tank 22 through the liquid inlet pipe 24, then screw the cover body 25, and fasten the cover body 25 through the interaction of the third thread groove 26 and the external thread 27, so as to prevent the liquid from leaking from the liquid inlet pipe 24. Part of the liquid enters the bottom of the hollow cylinder 18 through the connecting pipe 23. When the device is vibrated and impacted, the bearing plate 1 drives the piston plate 19 to move in the hollow cylinder 18 through the support column 20. The piston plate 19 presses the liquid in the hollow cylinder 18 to flow in and out of the connecting pipe 23. During the liquid flow process, due to factors such as fluid viscosity, friction on the inner wall of the pipe, interaction between the fluid and the inner wall of the connecting pipe 23, and friction inside the fluid, these resistances will consume energy and slow down the flow speed of the fluid, thus generating a damping effect. At this time, the spring 21 deforms and it will store elastic potential energy. When the external force is removed, the spring 21 will release the stored energy and return to its original state. In this process, the spring 21 absorbs part of the vibration and impact energy, thereby reducing the energy transmitted to other components, and further reducing the influence of vibration and impact force on the upper clamping assembly. Slowing down the vibration and impact force can ensure the stability of the crankshaft during processing, thereby improving the processing accuracy and surface finish, reducing the wear of the fixture, and extending its service life.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed jig for crankshaft machining, characterized in that: include: A bearing plate (1), wherein a bearing column (2) is installed on the upper end surface of the bearing plate (1), a first mounting plate (3) is fixed on the top of the bearing column (2), a connecting plate (4) is fixed on the first mounting plate (3), a rotating assembly is installed on the connecting plate (4), the output end of the rotating assembly is connected to a second mounting plate (5), fixing plates (6) are installed on both sides of the upper end surface of the second mounting plate (5), the two fixing plates (6) are each provided with a transverse first thread groove (7), the two first thread grooves (7) are each provided with a first thread rod (8) screwed through, the two first thread rods (8) are each provided with a first clamping plate (9) at one end close to each other, the first clamping plate (9) is provided with a plurality of mounting grooves (10), and a clamping assembly is provided in each of the plurality of mounting grooves (10).

2. A crankshaft machining fixture according to claim 1, characterized in that: The clamping assembly comprises a second clamping plate (11), a second threaded groove (12) and a second threaded rod (13); the second clamping plate (11) is located in the mounting groove (10); the second threaded groove (12) is provided on the first clamping plate (9); the second threaded rod (13) is screwed through the second threaded groove (12); and the second threaded rod (13) is connected to the second clamping plate (11); and an anti-slip groove (14) is provided on the outer wall of the second clamping plate (11).

3. A crankshaft machining fixture according to claim 2, characterized in that: The rotating assembly comprises a rotating motor (15) and a rotating shaft (16); the rotating motor (15) is mounted on a connecting plate (4); and the rotating shaft (16) is connected to an output end of the rotating motor (15).

4. The fixing jig for crankshaft machining according to claim 3, characterized in that: A support plate (17) is provided below the bearing plate (1), a hollow cylinder (18) is installed on the upper end surface of the support plate (17), a piston plate (19) is provided inside the hollow cylinder (18), a support column (20) is connected to the piston plate (19), and the top end of the support column (20) is connected to the lower end surface of the bearing plate (1), and a spring (21) is connected between the piston plate (19) and the bottom end of the inner wall of the hollow cylinder (18).

5. A fixing jig for crankshaft machining according to claim 4, characterized in that: A liquid storage box (22) is provided on one side of the hollow cylinder (18), a connecting pipe (23) is installed between the liquid storage box (22) and the bottom of the hollow cylinder (18), and a liquid inlet pipe (24) is connected to the top of the liquid storage box (22).

6. A fixing jig for crankshaft machining according to claim 5, characterized in that: A cover body (25) is installed on the liquid inlet pipe (24), a third thread groove (26) is provided on the inner wall of the cover body (25), an external thread (27) is provided on the outer wall of the liquid inlet pipe (24), and the third thread groove (26) and the external thread (27) are matched.

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