Precise positioning device for cylinder cover

Abstract

The utility model belongs to the technical field of positioning devices, and particularly relates to a precise positioning device for a cylinder cover, which comprises a base and four clamping assemblies, the four clamping assemblies are distributed in a rectangular array, each clamping assembly comprises a shaft rod and a clamping plate, the shaft rod is rotatably connected to the top end of the base, and the clamping plates are arranged on the shaft rod. And clamping plates are symmetrically arranged at the top of the side wall of the shaft rod, a driving plate is fixedly connected to the bottom of the side wall of the shaft rod, and a driving assembly used for driving the shaft rod to rotate is arranged at the top of the inner side of the base. When the front side face and the rear side face of the air cylinder cover blank body need to be machined, the left side face and the right side face of the air cylinder cover blank body can be clamped through one clamping plate on the side wall of the shaft rod, so that a machining part is prevented from being shielded by a clamping component, and the situation that machining operation is affected due to the fact that clamping point positions exist on a working face is avoided. And the front and rear side surfaces of the cylinder cover blank can be clamped in the same way of processing the left and right side surfaces.

Description

Technical Field

[0001] This utility model belongs to the field of positioning device technology, specifically relating to a cylinder head precision positioning device. Background Technology

[0002] The function of the cylinder head is to seal the cylinder, forming the combustion space together with the piston, and to withstand the action of high-temperature, high-pressure combustion gases. The cylinder head bears the mechanical load caused by gas forces and the tightening bolts, and also experiences high thermal loads due to contact with the high-temperature combustion gases. To ensure a good seal, the cylinder head must not be damaged or deformed. Therefore, the cylinder head must have sufficient strength and rigidity. During machining, the cylinder head needs to be positioned, and the commonly used positioning device is a clamp.

[0003] The cylinder positioning fixtures used in general have fixed clamping points. Therefore, when machining the cylinder head, the position of the fixture needs to be considered during machining to avoid interference between the fixture and the machining tool. Utility Model Content

[0004] The purpose of this invention is to provide a cylinder head precision positioning device that can avoid the clamping components from obstructing the processing area and avoid the presence of clamping points on the working surface that affect the processing operation, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cylinder head precision positioning device, comprising a base and clamping assemblies, wherein there are four clamping assemblies arranged in a rectangular array, each clamping assembly comprising a shaft and a clamping plate, the shaft being rotatably connected to the top of the base, the top of the side wall of the shaft being symmetrically provided with clamping plates, the bottom of the side wall of the shaft being fixedly connected with a drive plate, and the top of the inner side of the base being provided with a drive assembly for driving the shaft to rotate.

[0006] Furthermore, a positioning groove for placing the cylinder head blank is provided at the center of the top of the base.

[0007] Furthermore, one end of the clamp is provided with a bent portion.

[0008] Furthermore, one end of the drive plate is provided with a through groove, and a rotating cylinder is rotatably connected inside the through groove via a rotating shaft.

[0009] Furthermore, the drive assembly includes a double-rod hydraulic cylinder fixedly connected to the top of the inner wall of the base. Both ends of the double-rod hydraulic cylinder are fixedly connected to a base plate, and both ends of the base plate are provided with push-pull components.

[0010] Furthermore, mounting grooves are provided at both ends of the substrate, and a connector is fixedly connected to one end of the push-pull member, which is rotatably connected inside the mounting groove.

[0011] Furthermore, one end of each of the four push-pull components is fixedly connected to the side wall of each of the four rotating cylinders.

[0012] Compared with the prior art, the beneficial effects of this utility model are: when it is necessary to process the front and rear sides of the cylinder head blank, the left and right sides of the cylinder head blank can be clamped by one of the clamping plates on the side wall of the shaft, thereby avoiding the obstruction of the processing part by the clamping parts and avoiding the presence of clamping points on the working surface, which would affect the processing operation. Similarly, the front and rear sides of the cylinder head blank can be clamped to process the left and right sides. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 3 This is a three-dimensional structural diagram of the clamping assembly of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the drive component of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Base; 11. Positioning groove; 2. Clamping assembly; 21. Shaft; 22. Clamping plate; 23. Bending part; 24. Drive plate; 25. Rotary cylinder; 3. Drive assembly; 31. Double-rod hydraulic cylinder; 32. Base plate; 33. Mounting groove; 34. Push-pull component; 35. Connector. Detailed Implementation

[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0020] like Figure 1-3As shown, a cylinder head precision positioning device includes a base 1 and a clamping assembly 2. There are four clamping assemblies 2, which are arranged in a rectangular array. Each clamping assembly 2 includes a shaft 21 and a clamping plate 22. The shaft 21 is rotatably connected to the top of the base 1. The clamping plate 22 is symmetrically arranged on the top of the side wall of the shaft 21. A drive plate 24 is fixedly connected to the bottom of the side wall of the shaft 21. A drive assembly 3 for driving the shaft 21 to rotate is arranged on the top of the inner side of the base 1.

[0021] According to the above structure, when in use, the cylinder head blank is placed on the top of the base 1, and then the shaft 21 is driven to rotate by the drive assembly 3. When it is necessary to process the front and rear sides of the cylinder head blank, the left and right sides of the cylinder head blank can be clamped by one of the clamping plates 22 on the side wall of the shaft 21, thereby avoiding the clamping parts from obstructing the processing area. Similarly, the front and rear sides of the cylinder head blank can be clamped to process the left and right sides.

[0022] like Figure 2 As shown, a positioning groove 11 for placing the cylinder head blank is provided in the middle of the top of the base 1.

[0023] According to the above structure, when placing the cylinder head blank, the bottom of the cylinder head blank can be placed inside the positioning groove 11, thereby improving the stability of the cylinder head blank.

[0024] like Figure 3 As shown, one end of the clamping plate 22 is provided with a bending part 23, and one end of the drive plate 24 is provided with a through groove. The inside of the through groove is rotatably connected to the rotating cylinder 25 via a rotating shaft.

[0025] According to the above structure, the bent part 23 protrudes forward relative to the clamping plate 22. When clamping the cylinder head blank, the bent part 23 contacts the cylinder head blank first, thereby improving the stability of clamping.

[0026] like Figure 2-4 As shown, the drive assembly 3 includes a double-rod hydraulic cylinder 31 fixedly connected to the top of the inner wall of the base 1. Both ends of the double-rod hydraulic cylinder 31 are fixedly connected to a base plate 32. Both ends of the base plate 32 are provided with push-pull members 34 and mounting grooves 33. One end of the push-pull member 34 is fixedly connected to a connector 35, which is rotatably connected inside the mounting groove 33. One end of each of the four push-pull members 34 is fixedly connected to the side wall of the four rotating cylinders 25.

[0027] According to the above structure, during use, the extended double-rod hydraulic cylinder 31 drives the base plate 32 to move towards the end of the base 1. Through the transmission of the push-pull member 34, the drive plate 24 and the shaft 21 are pushed to rotate around the axis of the shaft 21, so that the corresponding bent part 23 on the shaft 21 clamps the front and rear sides of the cylinder head blank. The retracted double-rod hydraulic cylinder 31 drives the base plate 32 to move away from the end of the base 1, thereby driving the corresponding bent part 23 on the shaft 21 to clamp the left and right sides of the cylinder head blank.

[0028] The working principle of this utility model is as follows: In use, the cylinder head blank is placed on the top of the base 1, and then the shaft 21 is rotated by the drive assembly 3. When it is necessary to process the front and rear sides of the cylinder head blank, the left and right sides of the cylinder head blank can be clamped by one of the clamping plates 22 on the side wall of the shaft 21, thereby avoiding the clamping parts from obstructing the processing area. The same principle applies to the processing of the left and right sides, and the front and rear sides of the cylinder head blank can be clamped. When placing the cylinder head blank, the bottom of the cylinder head blank can be placed inside the positioning groove 11. This improves the stability of the cylinder head blank. During use, the extended double-rod hydraulic cylinder 31 drives the base plate 32 to move towards the end of the base 1. Through the transmission of the push-pull member 34, the drive plate 24 and the shaft 21 are pushed to rotate around the axis of the shaft 21, so that the corresponding bent part 23 on the shaft 21 clamps the front and rear sides of the cylinder head blank. The retracted double-rod hydraulic cylinder 31 drives the base plate 32 to move away from the end of the base 1, thereby driving the corresponding bent part 23 on the shaft 21 to clamp the left and right sides of the cylinder head blank.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A cylinder head precision positioning device, comprising a base (1) and a clamping assembly (2), characterized in that: There are four clamping components (2), which are arranged in a rectangular array. Each clamping component (2) includes a shaft (21) and a clamping plate (22). The shaft (21) is rotatably connected to the top of the base (1). The clamping plate (22) is symmetrically arranged on the top of the side wall of the shaft (21). A drive plate (24) is fixedly connected to the bottom of the side wall of the shaft (21). A drive component (3) for driving the shaft (21) to rotate is arranged on the top of the inner side of the base (1).

2. The cylinder head precision positioning device according to claim 1, characterized in that: The base (1) has a positioning groove (11) at the middle of its top end for placing the cylinder head blank.

3. The cylinder head precision positioning device according to claim 1, characterized in that: One end of the clamp (22) is provided with a bent part (23).

4. The cylinder head precision positioning device according to claim 1, characterized in that: One end of the drive plate (24) is provided with a through groove, and a rotating cylinder (25) is rotatably connected inside the through groove via a rotating shaft.

5. A cylinder head precision positioning device according to claim 4, characterized in that: The drive assembly (3) includes a double-rod hydraulic cylinder (31) fixedly connected to the top of the inner wall of the base (1). Both ends of the double-rod hydraulic cylinder (31) are fixedly connected to a base plate (32), and both ends of the base plate (32) are provided with push-pull members (34).

6. A cylinder head precision positioning device according to claim 5, characterized in that: The substrate (32) has mounting grooves (33) at both ends, and one end of the push-pull member (34) is fixedly connected to a connector (35), which is rotatably connected inside the mounting groove (33).

7. A cylinder head precision positioning device according to claim 6, characterized in that: One end of each of the four push-pull members (34) is fixedly connected to the side wall of each of the four rotating cylinders (25).

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