Clamping mechanism for crankshaft grinding

Abstract

The utility model relates to the field of crankshaft clamps, and discloses a clamping mechanism for crankshaft grinding, which comprises a mounting block I and a mounting block II, a crankshaft workpiece is arranged on the opposite sides of the mounting block I and the mounting block II, a pressure ejector rod is fixedly connected in the mounting block I, the telescopic end of the pressure ejector rod is fixedly connected with a rough grinding rear flange, and the rough grinding rear flange is fixedly connected with a rough grinding rear flange. The right side of the roughly-ground flange abuts against the left side of the crankshaft workpiece, a cleaning assembly is arranged in the first mounting block and used for cleaning the roughly-ground flange, and an air drying assembly is arranged in the first mounting block and used for air drying the roughly-ground flange. According to the device, when the crankshaft workpiece is supported by the two mounting blocks, the crankshaft workpiece can rotate stably, friction between the clamping mechanism and the crankshaft is prevented, water can be sprayed to the roughly-ground flange through the water conveying pipe and the spray head to clean the roughly-ground flange, and therefore the roughly-ground flange is kept clean.

Description

Technical Field

[0001] The utility model relates to the field of crankshaft jigs, in particular to a clamping mechanism for crankshaft grinding. Background Art

[0002] The crankshaft is an important component in the reciprocating engine of an internal combustion engine and is also commonly found in other types of engines and mechanical equipment. Its main function is to convert the linear motion of the reciprocating piston into circular motion. The crankshaft is made of a precision-machined alloy steel or forged steel, with high strength and rigidity. Its shape presents multiple eccentric parts for connecting the piston and driving other mechanical components.

[0003] Crankshaft indexing grinding is a high-precision machining process used for precision grinding of the crankshaft to ensure its precise dimensions, flatness, and roundness. This process is carried out on a CNC grinding machine using a rotary grinding operation. The crankshaft processed by this process has excellent surface finish and precise geometric shape, and is suitable for high-performance engines and other demanding mechanical devices.

[0004] During the grinding process of the crankshaft, a clamping mechanism is required to fix the crankshaft. However, the existing clamping mechanism is prone to friction with the crankshaft during the grinding process, resulting in damage and scrapping of the crankshaft. Therefore, a clamping mechanism for crankshaft grinding is proposed to solve the above problems. Summary of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides a clamping mechanism for crankshaft grinding, aiming to improve the problem that the clamping mechanism in the existing technology causes damage and scrapping of the crankshaft due to friction with the crankshaft.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A clamping mechanism for crankshaft grinding includes a first mounting block and a second mounting block. A crankshaft workpiece is arranged on the opposite sides of the first mounting block and the second mounting block. A pressure ejector rod is fixedly connected inside the first mounting block. The telescopic end of the pressure ejector rod is fixedly connected with a flange after rough grinding. The right side of the flange after rough grinding abuts against the left side of the crankshaft workpiece. A cleaning component and a drying component are arranged inside the first mounting block.

[0008] As a further description of the above technical solution:

[0009] The cleaning component includes a water delivery pipe fixedly connected to the inner bottom side of the first mounting block, and one end of the water delivery pipe is fixedly connected with a spray head.

[0010] As a further description of the above technical solution:

[0011] The air drying component includes an air delivery pipe, which is fixedly connected to the inside of the bottom side of the mounting block. One end of the air delivery pipe is fixedly connected with a flow guide cover;

[0012] As a further description of the above technical solution:

[0013] A pressing block is fixedly connected inside the first mounting block, and the pressing block is arranged on the outer circumference of the crankshaft workpiece;

[0014] As a further description of the above technical solution:

[0015] A plurality of uniformly distributed drain holes are formed in the bottom side of the first mounting block, and the drain holes are arranged at the bottom of the nozzle;

[0016] As a further description of the above technical solution:

[0017] A fixing ring is fixedly connected to the outer circumference of the air delivery pipe, and the fixing ring is fixedly connected inside the first mounting block;

[0018] As a further description of the above technical solution:

[0019] A bearing is rotatably connected inside the second mounting block, and the right end of the crankshaft workpiece is slidably connected to the inside of the bearing;

[0020] As a further description of the above technical solution:

[0021] A jaw is abutted against the outer circumference of the crankshaft workpiece. A connecting ring is fixedly connected to the outer circumference of the jaw, and the connecting ring is rotatably connected inside the pressing block.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, after the left end of the crankshaft workpiece is inserted into the first mounting block, the pressure ejector rod can be started. The telescopic end of the pressure ejector rod pushes the flange after rough grinding to move. The flange after rough grinding contacts the crankshaft workpiece and drives the crankshaft workpiece to move so that the right end of the crankshaft workpiece is inserted into the second mounting block. When the two mounting blocks support the crankshaft workpiece, the crankshaft workpiece can rotate smoothly, preventing the clamping mechanism from rubbing against the crankshaft.

[0024] 2. In the utility model, the flange after rough grinding can be cleaned by spraying water through the water delivery pipe and the nozzle, so as to keep the flange after rough grinding clean. After the cleaning is completed, the flange after rough grinding can be air dried through the air delivery pipe and the flow guide cover. Description of the Drawings

[0025] Figure 1 is a three-dimensional schematic diagram of the clamping mechanism for crankshaft grinding proposed by the utility model;

[0026] Figure 2Schematic diagram of mounting block 1 of the clamping mechanism for crankshaft grinding proposed by the present utility model;

[0027] Figure 3 Schematic diagram of the pressing block of the clamping mechanism for crankshaft grinding proposed by the present utility model;

[0028] Figure 4 Schematic diagram of mounting block 2 of the clamping mechanism for crankshaft grinding proposed by the present utility model.

[0029] Legend description:

[0030] 1. Mounting block 1; 2. Water delivery pipe; 3. Mounting block 2; 4. Crankshaft workpiece; 5. Pressure ejector rod; 6. Fixed ring; 7. Air delivery pipe; 8. Deflector; 9. Nozzle; 10. Flange after rough grinding; 11. Pressing block; 12. Chuck jaw; 13. Bearing; 14. Connecting ring. Specific implementation manner

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to Figures 1 - 3 , an embodiment provided by the present utility model: A clamping mechanism for crankshaft grinding includes a mounting block 1 and a mounting block 2. On the opposite sides of the mounting block 1 and the mounting block 2, there is a crankshaft workpiece 4. The mounting block 1 and the mounting block 2 are used to support the rotation of the crankshaft workpiece 4. Inside the mounting block 1, there is a fixed connection with a pressure ejector rod 5. The pressure ejector rod 5 is used to drive the flange 10 after rough grinding to move. The telescopic end of the pressure ejector rod 5 is fixedly connected with the flange 10 after rough grinding. The right side of the flange 10 after rough grinding abuts against the left side of the crankshaft workpiece 4. The movement of the flange 10 after rough grinding can push the right end of the crankshaft workpiece 4 into the inside of the mounting block 2. Inside the mounting block 1, there is a fixed connection with a pressing block 11. The pressing block 11 is arranged on the outer periphery of the crankshaft workpiece 4. The pressing block 11 is used to fix the crankshaft workpiece 4. The outer periphery of the crankshaft workpiece 4 abuts against a chuck jaw 12. The chuck jaw 12 serves to reduce the friction between the crankshaft workpiece 4 and the pressing block 11. The outer periphery of the chuck jaw 12 is fixedly connected with a connecting ring 14. The connecting ring 14 is rotatably connected inside the pressing block 11. The connecting ring 14 is used to connect the pressing block 11 and the chuck jaw 12 to each other.

[0033] Refer to Figure 1 . Figure 2, a cleaning component is arranged inside the first mounting block 1. The cleaning component includes a water delivery pipe 2 which is fixedly connected to the inside of the bottom side of the first mounting block 1. The water delivery pipe 2 is used to transport water flow. One end of the water delivery pipe 2 is fixedly connected with a spray head 9 which can spray the water flow towards the flange 10 after rough grinding. A plurality of uniformly distributed drain holes are formed in the bottom side of the first mounting block 1. The drain holes are arranged at the bottom of the spray head 9 and are used to drain the water flow.

[0034] Refer to Figure 1 , Figure 2 , a drying component is arranged inside the first mounting block 1. The drying component includes an air delivery pipe 7 which is fixedly connected to the inside of the bottom side of the first mounting block 1. The air delivery pipe 7 is used to transport air flow. One end of the air delivery pipe 7 is fixedly connected with a flow guide cover 8 and the air flow can move towards the flange 10 after rough grinding through the flow guide cover 8. A fixing ring 6 is fixedly connected to the outer periphery of the air delivery pipe 7. The fixing ring 6 is fixedly connected inside the first mounting block 1 and the fixing ring 6 plays a role in fixing the air delivery pipe 7.

[0035] Refer to Figure 1 , Figure 4 , a bearing 13 is rotatably connected inside the second mounting block 3. The right end of the crankshaft workpiece 4 is slidably connected inside the bearing 13. The bearing 13 can reduce the friction between the right end of the crankshaft workpiece 4 and the second mounting block 3 and enable the crankshaft workpiece 4 to rotate smoothly.

[0036] Working principle: When grinding the crankshaft workpiece 4, insert the left end of the crankshaft workpiece 4 into the first mounting block 1. Then start the pressure ejector rod 5. The telescopic end of the pressure ejector rod 5 drives the flange 10 after rough grinding to move towards the left end of the crankshaft workpiece 4 so that the pressing block 11 fixes the left end of the crankshaft workpiece 4, and pushes the right end of the crankshaft workpiece 4 into the bearing 13 to complete the fixation of the crankshaft workpiece 4. Then the crankshaft workpiece 4 can be ground. During the grinding process, the crankshaft workpiece 4 rotates. The chuck 12 and the bearing 13 can respectively reduce the friction between the left and right ends of the crankshaft workpiece 4 and the first mounting block 1 and the second mounting block 3 to enable the crankshaft workpiece 4 to rotate smoothly, preventing the clamping mechanism from rubbing against the crankshaft workpiece 4 and causing damage and scrapping of the crankshaft workpiece 4. After grinding, the telescopic end of the pressure ejector rod 5 can be retracted so that the flange 10 after rough grinding no longer contacts the crankshaft workpiece 4 and no longer restricts the movement of the crankshaft workpiece 4. Then the crankshaft workpiece 4 can be taken out. Water can be sprayed towards the flange 10 after rough grinding through the water delivery pipe 2 and the spray head 9 to clean the flange 10 after rough grinding, thereby keeping the flange 10 after rough grinding clean. After cleaning, air flow can be injected into the air delivery pipe 7 and the air flow can move towards the flange 10 after rough grinding through the flow guide cover 8 to dry the flange 10 after rough grinding.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A clamping mechanism for crankshaft grinding, comprising a mounting block 1 (1) and a mounting block 2 (3), characterized in that: A crankshaft workpiece (4) is arranged on the opposite side of the mounting block 1 (1) and the mounting block 2 (3); a pressure push rod (5) is fixedly connected inside the mounting block 1 (1); a rough grinding rear flange (10) is fixedly connected to the telescopic end of the pressure push rod (5); the right side of the rough grinding rear flange (10) abuts against the left side of the crankshaft workpiece (4); a cleaning component is arranged inside the mounting block 1 (1); and a drying component is arranged inside the mounting block 1 (1).

2. The clamping mechanism for crankshaft grinding according to claim 1, characterized in that: The cleaning assembly comprises a water pipe (2), wherein the water pipe (2) is fixedly connected to the inside of the bottom side of the mounting block (1), and one end of the water pipe (2) is fixedly connected to a spray head (9).

3. The clamping mechanism for crankshaft grinding according to claim 1, characterized in that: The air-drying component comprises an air supply pipe (7), wherein the air supply pipe (7) is fixedly connected to the inside of the bottom side of the mounting block (1), and one end of the air supply pipe (7) is fixedly connected to a flow guide cover (8).

4. The clamping mechanism for crankshaft grinding according to claim 1, characterized in that: A pressing block (11) is fixedly connected inside the first mounting block (1), and the pressing block (11) is arranged on the outer periphery of the crankshaft workpiece (4).

5. The clamping mechanism for crankshaft grinding according to claim 2, characterized in that: The bottom side of the mounting block 1 (1) is provided with a plurality of evenly distributed drainage holes, and the drainage holes are arranged at the bottom of the nozzle (9).

6. The clamping mechanism for crankshaft grinding according to claim 3, characterized in that: A fixing ring (6) is fixedly connected to the outer periphery of the gas delivery pipe (7), and the fixing ring (6) is fixedly connected to the inside of the mounting block 1 (1).

7. The clamping mechanism for crankshaft grinding according to claim 1, characterized in that: A bearing (13) is rotatably connected inside the second mounting block (3), and the right end of the crankshaft workpiece (4) is slidably connected inside the bearing (13).

8. The clamping mechanism for crankshaft grinding according to claim 4, characterized in that: The outer periphery of the crankshaft workpiece (4) is abutted with a slip (12), the outer periphery of the slip (12) is fixedly connected with a connecting ring (14), and the connecting ring (14) is rotatably connected to the inside of the pressing block (11).

Images