An engine cylinder head clamp

Abstract

The utility model discloses an engine cylinder cover clamp, including bottom plate, bottom plate is fixed on the workstation through T type bolt, and the vertical plate is fixedly arranged to the bottom plate, and the back of vertical plate is provided with the support side plate and connects the bottom plate, and the slide rail perpendicular to vertical plate is arranged on the front of vertical plate on the bottom plate, and the slide block fixed connection sliding platform is arranged on the slide rail, and the prepositioning stand and the support block for workpiece positioning and support are arranged on the sliding platform and are spaced, and the front of vertical plate upper side and lower side are horizontally arranged with a plurality of clamping mechanisms for clamping fixed workpiece, and two workpiece hooks are arranged on the both sides of upper position in the middle part of vertical plate front, and the middle part is installed in the lower position and divides the mechanism, the utility model not only can guarantee the positioning accuracy and the clamping reliability of cylinder cover in the processing and detection process, can also realize real -time air -tight detection, improves product quality and production efficiency, reduces the rejection rate and production cost.

Description

Technical Field

[0001] This utility model belongs to the field of engine cylinder head tooling technology, and specifically relates to an engine cylinder head fixture. Background Technology

[0002] In the machining and assembly of engine cylinder heads, fixtures, as key tooling equipment, play a crucial role in positioning, supporting, and clamping. Their stability and reliability directly affect the machining accuracy and assembly quality of the workpiece. Existing cylinder head fixtures commonly suffer from the following problems: 1. Insufficient positioning accuracy: Some fixtures have simple structures, relying only on single-point or limited support for positioning. Workpieces are prone to shifting during machining, leading to dimensional errors or hole misalignments. 2. Unstable clamping: Commonly used mechanical or single-cylinder clamping methods result in uneven clamping force distribution, making it difficult to ensure stable fixation of the workpiece in multiple directions, potentially causing minor movements during machining. 3. Lack of means to test the sealing effect between the fixture and the workpiece. 4. Some fixtures are designed for a single model, lacking flexible adjustment capabilities, making it difficult to adapt to the rapid replacement and inspection needs of different cylinder head models.

[0003] Therefore, there is an urgent need for an engine cylinder head fixture with a reasonable structure, high positioning accuracy, reliable clamping, and the ability to perform seal testing, in order to meet the requirements of machining accuracy and testing efficiency in modern engine production. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an engine cylinder head clamp.

[0005] The technical solution adopted by this utility model is an engine cylinder head clamp, including a base plate, which is fixed to the workbench by T-bolts. A vertical plate is fixedly installed in the middle of the base plate. A support side plate is provided on the back of the vertical plate and connected to the base plate. A slide rail is provided on the base plate in front of the vertical plate, which is perpendicular to the vertical plate. A slider is provided on the slide rail and fixedly connected to the sliding platform. Pre-positioning columns and support blocks for workpiece positioning and support are arranged at intervals on the sliding platform. Multiple clamping mechanisms for clamping and fixing workpieces are arranged laterally on the upper and lower sides of the front of the vertical plate. Two workpiece hooks are respectively provided on the left and right sides of the upper part of the center of the front of the vertical plate. A centering mechanism is installed at the lower part of the center.

[0006] Furthermore, the clamping mechanism includes a mounting base, a support base, a clamping cylinder, a clamping component, and a connecting rod. The mounting base and the support base are vertically arranged and fixedly connected to a vertical plate. The mounting base has a hinged connection part protruding from the side facing the workpiece. The vertical plate has a groove at the position where the mounting base is set, and a clamping cylinder is installed there. The push rod of the clamping cylinder extends from the side of the mounting base away from the workpiece. The front end of the clamping component is the clamping part, and the rear end is hinged to the push rod. The middle part is hinged to the upper end of the connecting rod, and the lower end of the connecting rod is hinged to the hinged connection part. A support column is set at the center of the support base. The push rod pushes the rear end of the clamping component so that its front clamping part extends into the side hole of the workpiece. The clamping part presses against the hole wall of the side panel, and the support column presses against the bottom surface of the workpiece.

[0007] Furthermore, the clamping mechanism is divided into a fixed support clamping mechanism and an auxiliary support clamping mechanism. In the fixed support clamping mechanism, the support column is a fixed support column. In the auxiliary support clamping mechanism, the upright plate has a groove at the position where the support seat is set, and a support cylinder is installed. The push rod of the support cylinder extends from the center of the support seat as a movable support column.

[0008] Furthermore, the fixed support clamping mechanism is arranged on the lower middle part and the upper left and right sides of the upright plate.

[0009] Furthermore, the auxiliary support clamping mechanism and the fixed support clamping mechanism are arranged in the same vertical direction.

[0010] Furthermore, a heightening pad is fixedly installed below the mounting base, and the heightening pad is fixedly connected to the upright plate.

[0011] Furthermore, a handle is fixedly connected to the front side of the sliding platform.

[0012] Furthermore, a horizontal strip-shaped through hole is provided in the middle of the upright plate.

[0013] Furthermore, the fixed support column has a hole on the end face of the workpiece, which is connected to an air pipe. The air pipe is then connected to a pressure sensor and a pressure reducing valve in sequence before being connected to an air source.

[0014] The engine cylinder head clamp provided by this utility model has the following beneficial effects: 1. Through the cooperation of the sliding platform, pre-positioning column and support block, multi-point support and limiting of the workpiece are achieved, with high positioning accuracy, which can ensure the stability and accuracy of the workpiece during the clamping process; 2. By combining a fixed support clamping mechanism with an auxiliary support clamping mechanism, multi-directional clamping and support are formed, ensuring reliable clamping and uniform distribution of clamping force, thereby improving the stability of the workpiece during processing and inspection. 3. An air pipe interface is set in the support column of the fixed support clamping mechanism, which can be connected to an air source and a pressure sensor to realize online air tightness detection of the workpiece. This can promptly detect air tightness problems of the fixture or workpiece and prevent defective products from flowing into subsequent processes. 4. The sliding platform is equipped with a handle, which can be moved flexibly and is easy to operate. It facilitates quick clamping and loading of workpieces, which can improve production efficiency. The application of auxiliary support clamping mechanism and adjustable mechanism in the fixture structure makes it flexibly adaptable to different models of cylinder heads and meet the processing needs of multiple varieties. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is a schematic diagram of the auxiliary support and clamping mechanism of this utility model; Figure 6 This is a schematic diagram of the structure of the airtightness detection component of this utility model; Figure 7 This is a schematic diagram illustrating the use of this utility model; Figure 8 This is a schematic diagram of the working function of the airtightness detection component of this utility model.

[0016] In the diagram: 1. Base plate; 2. Workbench; 3. Vertical plate; 4. Support side plate; 5. Slide rail; 6. Slider; 7. Sliding platform; 71. Handle; 8. Pre-positioning column; 9. Support block; 10. Clamping mechanism; 101. Mounting base; 1011. Hinge connection; 1012. Heightening pad; 102. Support base; 103. Clamping cylinder; 104. Clamping component; 1041. Clamping part; 105. Connecting rod; 106. Fixed support column; 107. Movable support column; 11. Workpiece hook; 12. Centering mechanism; 13. Air pipe; 14. Pressure sensor; 15. Pressure reducing valve. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an engine cylinder head clamp according to this utility model.

[0018] like Figures 1-4As shown, an engine cylinder head clamp includes a base plate 1, which is fixed to a workbench 2 by T-bolts. A vertical plate 3 is fixedly installed in the middle of the base plate 1. For ease of operation, a transverse strip-shaped through hole 31 is provided in the middle of the vertical plate 3. A support side plate 4 is provided on the back of the vertical plate 3 and connected to the base plate 1. A vertical slide rail 5 is provided on the base plate 1 in front of the vertical plate 3. A slider 6 is provided on the slide rail 5 and fixedly connected to a sliding platform 7. A handle 71 is fixedly connected to the front side of the sliding platform 7. Pre-positioning columns 8 and support blocks 9 for workpiece positioning and support are arranged at intervals on the sliding platform 7. Multiple clamping mechanisms 10 for clamping and fixing workpieces are arranged transversely on the upper and lower sides of the front of the vertical plate 3. Two workpiece hooks 11 are provided on the upper side of the middle of the front of the vertical plate 3, one of which is square and the other is L-shaped to avoid the clamping mechanism 10. A centering mechanism 12 is installed on the lower side of the middle of the front of the vertical plate 3.

[0019] The clamping mechanism 10 is divided into a fixed support clamping mechanism and an auxiliary support clamping mechanism. The fixed support clamping mechanism is arranged on the lower middle and upper left and right sides of the vertical plate 3. The auxiliary support clamping mechanism is arranged in the same vertical direction as the fixed support clamping mechanism. In order to accommodate more product workpieces, another set of auxiliary support clamping mechanisms is arranged on both sides of the front of the vertical plate 3.

[0020] like Figure 5 As shown, the clamping mechanism 10 includes a mounting base 101, a support base 102, a clamping cylinder 103, a clamping element 104, and a connecting rod 105. The mounting base 101 and support base 102 are vertically arranged and fixedly connected to a vertical plate 3. To accommodate the height of the workpiece hole, a heightening pad 1012 is fixedly installed below the lower mounting base 101, and the heightening pad 1012 is fixedly connected to the vertical plate 3. The mounting base 101 has a hinged connection part 1011 protruding towards the workpiece side. The vertical plate 3 has a groove at the location where the mounting base 101 is set, and a clamping cylinder 103 is installed thereon. The push rod of the clamping cylinder 103 extends from the mounting base 101 away from the workpiece side. The front end of the clamping element 104 is the clamping part 1041, the rear end is hinged to the push rod, the middle part is hinged to the upper end of the connecting rod 105, and the lower end of the connecting rod 105 is hinged to the hinged connection part 1011. The support base 102... A central support column is provided. The support column in the fixed support clamping mechanism is a fixed support column 106. In the auxiliary support clamping mechanism, the upright plate 3 has a groove at the position where the support seat 102 is set, and a support cylinder is installed. The push rod of the support cylinder extends from the center of the support seat 102 as a movable support column 107. The push rod pushes the rear end of the clamping member 104 so that its front end clamping part 1041 extends into the side hole of the workpiece. The clamping part 1041 presses against the hole wall of the side panel, and the support column presses against the bottom surface of the workpiece.

[0021] like Figure 6As shown, the fixture is equipped with an airtightness detection component, which includes an air pipe 13, a pressure sensor 14, and a pressure reducing valve 15. One end of the air pipe 13 is connected to an air source, and the other end is connected to the pressure reducing valve 15. The function of the pressure reducing valve 15 is to regulate the unstable or excessively high pressure gas output from the air source to the stable value required for airtightness detection, avoiding damage to the detection component due to excessive pressure and ensuring the safety and stability of the detection process. The fixed support column 106 has a hole on the end face of the workpiece, which is connected to the pressure sensor 14 and the pressure reducing valve 15 in sequence through the air pipe 13. During the fixture airtightness detection, the gas from the air source first enters the air pipe 13. The gas in the air pipe 13 flows through the pressure reducing valve 15, and the reduced gas then flows through the pressure sensor 14. The pressure sensor 14 can monitor the dynamic changes in gas pressure in real time and output corresponding status signals.

[0022] like Figure 7 and Figure 8 As shown, when the workpiece is correctly placed and firmly clamped by the clamping mechanism 10, the pressure sensor 14 will display an ON state based on its internally set pressure threshold and sensing logic, indicating that the pressure value acquired by the detection component is within the normal range and the detection process can proceed smoothly. However, once the pressure sensor 14 alarms and displays an OFF state, it indicates that an abnormality has occurred in the current detection process. This abnormality may be due to the workpiece not being effectively clamped or being placed at an angle, causing leakage of the detection gas and thus pressure changes. It may also be due to foreign objects on the fixture, affecting the sealing effect between the fixture and the workpiece, causing the pressure value monitored by the pressure sensor 14 to deviate from the normal range. Therefore, when the pressure sensor displays OFF and alarms, the operator should first carefully check whether the workpiece is placed at an angle or clamped by the fixture, and check whether there are gaps at the contact points between the fixture and the workpiece. At the same time, a comprehensive inspection of the fixture surface should be carried out to remove any foreign objects that may be present, eliminate interfering factors that may affect the detection results, and ensure the accuracy of subsequent detection.

[0023] This invention not only ensures the positioning accuracy and clamping reliability of the cylinder head during processing and testing, but also enables real-time airtightness testing, improving product quality and production efficiency, and reducing scrap rate and production costs.

[0024] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An engine cylinder head clamp, characterized in that, Includes a base plate (1), which is fixed to the workbench (2) by T-bolts. A vertical plate (3) is fixedly installed in the middle of the base plate (1). A support side plate (4) is installed on the back of the vertical plate (3) to connect to the base plate (1). A slide rail (5) is installed on the base plate (1) in front of the vertical plate (3). A slider (6) is installed on the slide rail (5) to fix and connect to the sliding platform (7). A pre-positioning column (8) and a support block (9) for workpiece positioning and support are installed at intervals on the sliding platform (7). Multiple clamping mechanisms (10) for clamping and fixing workpieces are arranged horizontally on the upper and lower sides of the front of the vertical plate (3). Two workpiece hooks (11) are installed on the upper and lower sides of the front of the vertical plate (3). A centering mechanism (12) is installed in the lower middle position.

2. The engine cylinder head clamp according to claim 1, characterized in that, The clamping mechanism (10) includes a mounting base (101), a support base (102), a clamping cylinder (103), a clamping component (104), and a connecting rod (105). The mounting base (101) and the support base (102) are vertically arranged and fixedly connected to a vertical plate (3). The mounting base (101) has a hinged connection part (1011) protruding from the side facing the workpiece. The vertical plate (3) has a groove at the position where the mounting base (101) is set, and a clamping cylinder (103) is installed thereon. The push rod of the clamping cylinder (103) is driven from... The mounting base extends away from the workpiece side. The front end of the clamping member (104) is the clamping part (1041), the rear end is hinged to the push rod, the middle part is hinged to the upper end of the connecting rod (105), the lower end of the connecting rod (105) is hinged to the hinged connecting part (1011), the support base (102) is provided with a support column at the center, the push rod pushes the rear end of the clamping member (104) so ​​that the front end clamping part (1041) extends into the side hole of the workpiece, the clamping part (1041) presses against the hole wall of the side panel, and the support column presses against the bottom surface of the workpiece.

3. The engine cylinder head clamp according to claim 2, characterized in that, The clamping mechanism (10) is divided into a fixed support clamping mechanism and an auxiliary support clamping mechanism. In the fixed support clamping mechanism, the support column is a fixed support column (106). In the auxiliary support clamping mechanism, the upright plate (3) has a slot at the position where the support seat (102) is set, and a support cylinder is installed. The push rod of the support cylinder extends from the center of the support seat (102) as a movable support column (107).

4. The engine cylinder head clamp according to claim 3, characterized in that, The fixed support clamping mechanism is arranged on the lower middle part and the upper left and right sides of the vertical plate (3).

5. The engine cylinder head clamp according to claim 4, characterized in that, The auxiliary support clamping mechanism and the fixed support clamping mechanism are arranged in the same vertical direction.

6. The engine cylinder head clamp according to any one of claims 3 to 5, characterized in that, The fixed support column (106) has a hole on the end face of the workpiece. The hole is connected to the air pipe (13). The air pipe (13) is then connected to the pressure sensor (14) and the pressure reducing valve (15) in sequence, and then connected to the air source.

7. The engine cylinder head clamp according to claim 1, characterized in that, A heightening pad (1012) is fixedly installed below the mounting base (101), and the heightening pad (1012) is fixedly connected to the upright plate (3).

8. The engine cylinder head clamp according to claim 1, characterized in that, The front side of the sliding platform (7) is fixedly connected to the handle (71).

9. The engine cylinder head clamp according to claim 1, characterized in that, The vertical plate (3) has a horizontal strip-shaped through hole in the middle.

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