Machining clamp for engine accessories

Abstract

The utility model relates to the technical field of machining fixtures, and discloses an engine accessory machining fixture which comprises a base and a fixture plate, a supporting block is fixedly connected to the right side of the top of the base, mounting bases are fixedly connected to the left side and the right side of the top of the base, fourth shaft rotary tables are mounted on the close sides of the two mounting bases, and the fourth shaft rotary tables are fixedly connected to the fixture plate. The output ends of the two fourth shaft rotary tables are fixedly connected with a supporting plate, the top of the clamp plate is fixedly connected with a plurality of first positioning blocks, the top of the clamp plate is fixedly connected with a plurality of second positioning blocks, and adjusting rods are arranged in the second positioning blocks. The multi-angle stable clamping and positioning are achieved, it is guaranteed that accessories cannot move in the subsequent machining process, the machining precision is guaranteed, reverse operation is needed during disassembly, operation is easy and convenient, the replacement efficiency of the clamp plate is greatly improved, and the scene that the clamp plate is rapidly replaced when different machining requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, and in particular to a machining fixture for engine parts. Background Technology

[0002] Engine components are a collective term for all the parts that make up an engine and enable it to operate normally. They mainly include components of the crankshaft and connecting rod mechanism, such as pistons, piston rings, connecting rods, and crankshafts, which are responsible for converting the reciprocating motion of the pistons into the rotational motion of the crankshaft, providing power to the engine. Valve train components, such as valves, valve springs, and camshafts, are responsible for opening and closing the intake and exhaust valves at appropriate times according to the engine's working cycle and firing order, allowing fresh air-fuel mixture to enter the cylinders and exhaust gases to be expelled promptly. Fuel supply system components, such as fuel injectors and fuel pumps, are responsible for precisely injecting fuel into the cylinders to mix with air to form a combustible mixture. In addition, there are components of the cooling system, such as water pumps and radiators, and of the lubrication system, such as oil pumps and oil filters. These components work together to ensure the engine operates under suitable temperature and lubrication conditions, maintaining the engine's overall performance and reliability.

[0003] Engine component machining fixtures are process equipment used to fix, position, and support workpieces during engine component machining. They ensure the workpiece maintains the correct position and orientation during machining, guaranteeing machining accuracy. For example, when performing drilling, milling, and grinding operations on critical components such as engine blocks and crankshafts, the fixture can precisely position the workpiece, preventing displacement or wobbling during machining, thus ensuring that parameters such as hole diameter, flatness, and perpendicularity meet design requirements. Simultaneously, machining fixtures improve machining efficiency by quickly clamping workpieces, reducing auxiliary machining time.

[0004] However, existing machining fixtures for some engine parts cannot securely and effectively fix the parts. During machining, the parts often experience slight displacement and wobbling, which not only makes it difficult to guarantee machining accuracy but also significantly increases the defect rate. Fixture plate replacement also faces significant challenges. Traditional fixing methods and connection designs make fixture plate replacement cumbersome and complex, requiring considerable time and manpower, and preventing rapid fixture plate replacement. This severely impacts the continuity and efficiency of production. Therefore, to address these shortcomings, a machining fixture for engine parts is proposed to solve these problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a machining fixture for engine parts, aiming to improve the problem that some existing machining fixtures for engine parts cannot effectively fix the parts and cannot quickly replace the fixture plate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A machining fixture for engine parts includes a base and a fixture plate. A support block is fixedly connected to the top right side of the base. Mounting seats are fixedly connected to the top left and right sides of the base. A fourth-axis rotary table is mounted on the adjacent side of each of the two mounting seats. A support plate is fixedly connected to the output end of each of the two fourth-axis rotary tables. A plurality of positioning blocks I are fixedly connected to the top of the fixture plate. A plurality of positioning blocks II are fixedly connected to the top of the fixture plate. An adjusting rod is provided inside each of the plurality of positioning blocks II. A positioning fan ring is fixedly connected to the end of each of the plurality of adjusting rods away from the positioning blocks II. A plurality of positioning blocks III are fixedly connected to the top of the fixture plate. A plurality of fixing components for positioning are mounted on the top of the support plate. A positioning component for guiding is provided on the top of the support plate.

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

[0009] Each of the multiple fixing components includes a cylinder, the bottom of each of the multiple cylinders is mounted on the top of the support plate, the drive end of each of the multiple cylinders is fixedly connected to a push rod, the top of each of the multiple push rods is fixedly connected to a sliding block, the bottom of each of the multiple sliding blocks is fixedly connected to a clamping plate, the bottom of each of the multiple clamping plates is fixedly connected to two clamping posts, the inside of the clamping plate is provided with multiple first-type clamping slots, and the inside of the clamping plate is provided with multiple second-type clamping slots.

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

[0011] The positioning component includes two positioning posts, the bottoms of which are fixedly connected to the top left and right sides of the support plate, and positioning grooves are provided on the left and right sides of the interior of the clamping plate.

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

[0013] The bottom of the clamp plate contacts the top of the support plate, and the outside of the clamp plate is slidably connected to the inside of the first clamping slot.

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

[0015] The outer side of the locking pin is slidably connected to the inside of the locking groove 2, and the outer side of the positioning pin is slidably connected to the inside of the positioning groove.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, the positioning fan ring is adjusted in position by the adjusting rod, which can closely fit the contour of engine parts of different shapes and sizes, realize multi-angle stable clamping and positioning, ensure that the parts will not be displaced during subsequent processing, and guarantee processing accuracy. The cylinder drives the push rod to move the sliding block, so that the clamping plate slides into the first clamping slot and the clamping column slides into the second clamping slot, realizing the positioning and fixing of the clamping plate. Disassembly can be performed by reversing the operation, which is simple and convenient, greatly improving the efficiency of clamping plate replacement and meeting the scenario of quick clamping plate replacement when different processing needs are met.

[0018] 2. In this utility model, when installing the fixture plate, the positioning pins are first aligned and inserted into the positioning grooves to achieve preliminary accurate positioning, laying the foundation for subsequent precise fixing of the fixture plate by the fixing components. The depth and positional accuracy requirements of the positioning grooves are high to ensure that the positioning pins can be accurately inserted to a sufficient depth, ensuring the installation accuracy of the fixture plate on the support plate, so that the entire fixture maintains high-precision operation during the working process, thereby ensuring the processing accuracy of engine parts. Attached Figure Description

[0019] Figure 1 This is a perspective view of a machining fixture for engine parts proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the support plate structure of a machining fixture for engine parts proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the fixture plate structure of a machining fixture for engine parts proposed in this utility model;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 for Figure 2 Enlarged view of section B in the middle.

[0024] Legend:

[0025] 1. Base; 2. Support block; 3. Mounting seat; 4. Fourth axis turntable; 5. Support plate; 6. Fixture plate; 7. Positioning block one; 8. Positioning block two; 9. Adjusting rod; 10. Positioning fan ring; 11. Positioning block three; 12. Cylinder; 13. Push rod; 14. Sliding block; 15. Clamping plate; 16. Clamping post; 17. Clamping slot one; 18. Clamping slot two; 19. Positioning groove; 20. Positioning column. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1 to 3 This utility model provides an embodiment of a machining fixture for engine parts, comprising a base 1 and a fixture plate 6. The base 1 serves as the basic support component of the entire machining fixture. A support block 2 is fixedly connected to the top right side of the base 1, and the support block 2 mainly serves as auxiliary support. Mounting seats 3 are fixedly connected to the top left and right sides of the base 1. A fourth-axis rotary table 4 is mounted on the adjacent side of the two mounting seats 3. The mounting seats 3 are used to mount the fourth-axis rotary table 4. Support plates 5 are fixedly connected to the output ends of the two fourth-axis rotary tables 4. The bottom of the fixture plate 6 contacts the top of the support plate 5, and the support plate 5 provides support for the fixture plate 6. Multiple positioning blocks 1 7 are fixedly connected to the top of the fixture plate 6. Positioning blocks 1 7 are used to initially determine the placement position of the part to be processed on the fixture plate 6. Multiple positioning blocks 2 8 are fixedly connected to the top of the fixture plate 6. Each of the multiple positioning blocks 2 8 has an adjusting rod 9 inside. The positioning blocks 2 8 mainly serve to support and fix the adjusting rod 9, ensuring the stability of the adjusting rod 9 during operation.

[0028] Multiple adjusting rods 9 are fixedly connected to positioning fan rings 10 at their ends away from positioning block 2 8. By adjusting the length of the adjusting rods 9, the position of the positioning fan rings 10 can be changed, thereby enabling more stable clamping and positioning of the workpiece to be processed, to adapt to the processing requirements of engine parts of different sizes and shapes. Multiple positioning blocks 3 11 are fixedly connected to the top of the fixture plate 6. Positioning blocks 3 11 cooperate with positioning block 1 7 and positioning fan rings 10 to jointly determine the precise position of the workpiece to be processed on the fixture plate 6. When the workpiece to be processed is placed on the fixture plate 6 along the edges of positioning block 1 7, positioning fan rings 10 and positioning blocks 3 11, preliminary positioning and preliminary clamping of the workpiece can be achieved. Multiple fixing components for positioning are installed on the top of the support plate 5, and positioning components for guidance are provided on the top of the support plate 5.

[0029] Reference Figures 3 to 5The fixture plate 6 is fastened by multiple fixing components, each including a cylinder 12. The bottom of each cylinder 12 is mounted on top of the support plate 5. The cylinder 12 serves as the power source for the rapid fixing of the fixture plate 6. Each cylinder 12 has a push rod 13 fixedly connected to its drive end, and a sliding block 14 is fixedly connected to the top of each push rod 13. The push rod 13 transmits the linear motion of the cylinder 12 to the sliding block 14. When the push rod 13 is displaced under the drive of the cylinder 12, the sliding block 14 moves accordingly. Each sliding block 14 has a clamping plate 15 fixedly connected to its bottom, and two clamping posts 16 are fixedly connected to the bottom of each clamping plate 15. The fixture plate 6 has multiple slots 17 inside. When the clamping plate 15 slides into slot 17, the clamping posts 16 simultaneously slide into slot 28, forming a tight fit with slot 28, further improving the fixing effect of the fixture plate 6 and preventing displacement or shaking of the fixture plate 6 during processing. The external sliding connection of the card plate 15 is to the inside of the card slot 17, and the inside of the clamp plate 6 is provided with multiple card slots 18. The external sliding connection of the card post 16 is to the inside of the card slot 18.

[0030] When the sliding block 14 moves downward under the drive of the cylinder 12, the clamping plate 15 slides into the interior of the first clamping slot 17, and at the same time, the clamping post 16 slides into the interior of the second clamping slot 18, thereby achieving the positioning and fixing of the clamping plate 6. The positioning assembly includes two positioning posts 20, the bottoms of which are fixedly connected to the top left and right sides of the support plate 5, respectively. Positioning grooves 19 are provided on both the left and right sides of the interior of the clamping plate 6. The exterior of the positioning posts 20 is slidably connected to the interior of the positioning grooves 19. The positioning grooves 19 are used to cooperate with the positioning posts 20 to achieve the initial positioning between the clamping plate 6 and the support plate 5, thereby ensuring the installation accuracy of the clamping plate 6 on the support plate 5.

[0031] Working principle: When it is necessary to install the clamping plate 6 in the machining fixture for engine parts, firstly, the positioning pin 20 at the bottom of the clamping plate 6 can be aligned with the inside of the positioning groove 19. Then, the clamping plate 6 can be placed on top of the support plate 5. Subsequently, the cylinder 12 can be activated to drive the push rod 13 and the sliding block 14 to move. At this time, the sliding block 14 will move downward, which will allow the clamping plate 15 to slide into the first clamping groove 17 and the clamping pin 16 to slide into the second clamping groove 18, thereby achieving the positioning and fixing of the clamping plate 6, thus realizing the... The quick installation of the clamping plate 6 is now possible. When disassembly and replacement are required, simply reverse the above steps. When using the machining fixture for this engine part, simply place the part to be processed on the top of the clamping plate 6, and then insert the part to be processed into the top of the clamping plate 6 along the edges of the positioning block 1 7, the positioning fan ring 10 and the positioning block 3 11. At this time, the position of the positioning fan ring 10 can be adjusted by adjusting the adjusting rod 9, so that the part to be processed can be clamped and positioned more securely, ensuring stability in the subsequent processing.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A machining fixture for engine parts, comprising a base (1) and a fixture plate (6), characterized in that: A support block (2) is fixedly connected to the top right side of the base (1). Mounting seats (3) are fixedly connected to the top left and right sides of the base (1). A fourth axis turntable (4) is installed on the adjacent side of the two mounting seats (3). A support plate (5) is fixedly connected to the output end of the two fourth axis turntables (4). A plurality of positioning blocks (7) are fixedly connected to the top of the clamping plate (6). A plurality of positioning blocks (8) are fixedly connected to the top of the clamping plate (6). An adjusting rod (9) is provided inside the plurality of positioning blocks (8). A positioning fan ring (10) is fixedly connected to the end of the plurality of adjusting rods (9) away from the positioning blocks (8). A plurality of positioning blocks (11) are fixedly connected to the top of the clamping plate (6). A plurality of fixing components for positioning are installed on the top of the support plate (5). A positioning component for guidance is provided on the top of the support plate (5).

2. The machining fixture for engine parts according to claim 1, characterized in that: Each of the aforementioned fixing components includes a cylinder (12), the bottom of each of the aforementioned cylinders (12) is mounted on the top of the support plate (5), the driving end of each of the aforementioned cylinders (12) is fixedly connected to a push rod (13), the top of each of the aforementioned push rods (13) is fixedly connected to a sliding block (14), the bottom of each of the aforementioned sliding blocks (14) is fixedly connected to a clamping plate (15), the bottom of each of the aforementioned clamping plates (15) is fixedly connected to two clamping posts (16), the clamping plate (6) has multiple first-type clamping slots (17) inside, and the clamping plate (6) has multiple second-type clamping slots (18) inside.

3. The machining fixture for engine parts according to claim 2, characterized in that: The positioning component includes two positioning posts (20), the bottoms of which are fixedly connected to the top left and right sides of the support plate (5), and positioning grooves (19) are provided on the left and right sides of the interior of the clamp plate (6).

4. The machining fixture for engine parts according to claim 2, characterized in that: The bottom of the clamp plate (6) is in contact with the top of the support plate (5), and the outside of the card plate (15) is slidably connected to the inside of the card slot (17).

5. The machining fixture for engine parts according to claim 3, characterized in that: The external of the locking post (16) is slidably connected to the inside of the second locking groove (18), and the external of the positioning post (20) is slidably connected to the inside of the positioning groove (19).

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