Pressure-bearing detection device for precision casting

Abstract

The utility model relates to the technical field of pressure-bearing detection of precision castings, and discloses a pressure-bearing detection device for precision castings, which comprises a workbench, a moving groove is arranged in the middle of the workbench, and a moving block is movably mounted in the moving groove. According to the technical scheme, the fixture on the pneumatic clamping table is driven to clamp the fixing plate, it is guaranteed that the fixing plate is firmly clamped by the pneumatic clamping table, and the booster pump is driven to convey air pressure to the pressure cavity in the pneumatic clamping table to increase the clamping force of the fixture, so that the clamping force of the fixture on the pneumatic clamping table reaches the bearing force of a precision casting; when a hydraulic push rod pushes the precision casting on the placing table to carry out pressure-bearing detection, an ejector rod, a fixing plate and a limiting seat can be synchronously pushed to horizontally move, and when the fixing plate is loosened in a pneumatic clamping table and the precision casting in the placing table is not damaged, the precision casting can meet the pressure-bearing requirement, so that the precision casting cannot be crushed, and the detection accuracy is improved. Workpiece damage caused when multiple sets of precision castings are subjected to pressure-bearing detection is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing technology for precision castings, specifically a pressure testing device for precision castings. Background Technology

[0002] Currently, pressure testing is a crucial step in the production and manufacturing of precision castings. Due to their special applications and working environments, precision castings have extremely high requirements for their pressure resistance. However, there are a series of technical problems and challenges in the traditional pressure testing process.

[0003] Traditional pressure testing devices often lack precise pressure control mechanisms and cannot be flexibly adjusted according to the specific pressure requirements of precision castings. This may result in the precision castings being subjected to excessive or insufficient pressure during testing, making it impossible to accurately assess their pressure-bearing capacity, leading to low testing efficiency and easy damage to the workpiece.

[0004] Traditional pressure testing devices are prone to damaging workpieces when testing multiple sets of precision castings as pressure is continuously output. This not only increases production costs but also reduces testing efficiency.

[0005] Therefore, we propose a pressure testing device for precision castings, which can protect the precision castings during pressure testing. Utility Model Content

[0006] The purpose of this invention is to provide a pressure testing device for precision castings, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pressure testing device for precision castings, comprising a workbench, a movable groove in the middle of the workbench, a movable block movably installed in the movable groove, a placement platform fixedly installed on the side wall of the movable block, a pressure platform movably installed in the middle of one side of the workbench, the pressure platform and the placement platform corresponding to each other, and a pressure support mechanism installed on the other side of the pressure platform;

[0008] The pressure-bearing support mechanism includes top rods fixedly installed at both ends of the side wall of the pressure table, limiting seats fixedly installed at the other ends of the two sets of top rods, a fixing plate fixedly installed in the middle of the other side of the limiting seats, a pneumatic clamping platform installed on the other side of the fixing plate, a pressure chamber set on one side of the pneumatic clamping platform, a conduit installed in communication with the side wall of the pressure chamber, and a booster pump installed in communication with the other end of the conduit. A pressure gauge is installed in communication with one side of the pressure chamber.

[0009] Optionally, the two sets of clamps of the pneumatic clamping platform correspond to the fixed plate, and the pressure chamber is connected to the cylinder piston inside the pneumatic clamping platform.

[0010] By adopting the above technical solution, pressure can be delivered to the pressure chamber.

[0011] Optionally, a hydraulic push rod is fixedly installed on one side of the workbench, and the other end of the hydraulic push rod is fixedly installed on the side wall of the moving block.

[0012] By adopting the above technical solution, the moving block can be moved horizontally.

[0013] Optionally, a pressure sensor is fixedly installed in the middle of the side wall of the placement platform, and a display is fixedly installed at one end of the side wall of the placement platform. The display is fixedly connected to the pressure sensor through a wire.

[0014] By adopting the above technical solution, the pressure value of precision castings can be observed.

[0015] Optionally, a first limiting groove is provided on both sides of the workbench, and a first limiting block is slidably installed on both sides of the two sets of first limiting grooves. The two adjacent sets of first limiting blocks are fixedly installed at both ends of the placement table and the pressing table, respectively.

[0016] By adopting the above technical solution, the placement platform and pressing platform can be limited.

[0017] Optionally, a second limiting groove is provided on both sides of the testing platform, and a second limiting block is slidably installed in each of the two sets of second limiting grooves. The two sets of second limiting blocks are respectively fixedly installed on both sides of the limiting seat.

[0018] By adopting the above technical solution, the limiting seat can be limited.

[0019] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0020] This technical solution involves the operator prioritizing the movement of a fixed plate to one side of a pneumatic clamping platform during constant pressure testing of a precision casting. The platform's clamps then hold the fixed plate securely. A booster pump delivers air pressure to the pressure chamber inside the platform, increasing the clamping force to meet the pressure requirements of the precision casting. Simultaneously, as the hydraulic pusher moves the precision casting onto the placement platform for pressure testing, the push rod, fixed plate, and limit seat move horizontally. If the fixed plate loosens within the pneumatic clamping platform without damaging the precision casting, the pressure requirement is met, preventing damage and effectively avoiding workpiece damage during pressure testing of multiple precision castings.

[0021] A pressure sensor is fixedly installed in the middle of the side wall of the placement platform, and a display is fixedly installed at one end of the side wall of the placement platform. When the operator drives the hydraulic push rod to move the moving block horizontally, the precision casting on the placement platform will continuously approach the pressure table. After the precision casting on the placement platform is in contact with the pressure table, the pressure table will squeeze the precision casting on the placement platform. With the help of the pressure sensor installed on the placement platform, the pressure value of the precision casting can be accurately detected, so that the operator can accurately control the delivery pressure and perform pressure test on the precision casting. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of a pressure testing device for precision castings according to this utility model;

[0024] Figure 2 This is a schematic diagram of the testing platform structure of a pressure testing device for precision castings according to this utility model;

[0025] Figure 3 This is a schematic diagram of the placement platform structure of a pressure testing device for precision castings according to this utility model.

[0026] In the diagram: 1. Workbench; 11. Hydraulic push rod; 12. Moving block; 13. Placement platform; 14. Pressing platform; 2. Testing platform; 21. Pneumatic clamping platform; 22. Fixing plate; 23. Limiting seat; 24. Push rod; 25. Pressure chamber; 26. Booster pump; 3. Pressure sensor; 31. Display; 32. First limiting groove; 33. Second limiting groove. Detailed Implementation

[0027] Please see Figure 1-3 The present invention provides a technical solution: a pressure testing device for precision castings, including a workbench 1, a movable groove is provided in the middle of the workbench 1, a movable block 12 is movably installed in the movable groove, a placement platform 13 is fixedly installed on the side wall of the movable block 12, a pressure platform 14 is movably installed in the middle of one side of the workbench 1, the pressure platform 14 corresponds to the placement platform 13, and a pressure support mechanism is installed on the other side of the pressure platform 14.

[0028] The pressure-bearing support mechanism includes top rods 24 fixedly installed at both ends of the side wall of the pressure table 14, limit seats 23 fixedly installed at the other end of the two sets of top rods 24, a fixing plate 22 fixedly installed in the middle of the other side of the limit seat 23, a pneumatic clamping platform 21 installed on the other side of the fixing plate 22, a pressure chamber 25 set on one side inside the pneumatic clamping platform 21, a conduit installed in the side wall of the pressure chamber 25, and a booster pump 26 installed in the other end of the conduit. A pressure gauge is installed in the side of the pressure chamber 25. A hydraulic push rod 11 is fixedly installed on one side of the workbench 1. The other end of the hydraulic push rod 11 is fixedly installed on the side wall of the moving block 12, which can push the moving block 12 to move horizontally.

[0029] When the operator performs constant pressure testing on the precision casting, the fixed plate 22 is first moved to one side of the pneumatic clamping table 21. The clamps on the pneumatic clamping table 21 then hold the fixed plate 22 firmly, ensuring that the fixed plate 22 is firmly held in place. The booster pump 26 delivers air pressure to the pressure chamber 25 inside the pneumatic clamping table 21 to increase the clamping force of the clamps, so that the clamping force of the pneumatic clamping table 21 reaches the pressure resistance of the precision casting. When the hydraulic push rod 11 pushes the precision casting on the placement table 13 for pressure testing, the push rod 24, the fixed plate 22, and the limit seat 23 are simultaneously pushed to move horizontally. If the fixed plate 22 becomes loose in the pneumatic clamping table 21, and the precision casting in the placement table 13 is not damaged, the precision casting can be guaranteed to meet the pressure requirements, thus preventing damage to the precision casting and effectively avoiding workpiece damage when multiple sets of precision castings are subjected to pressure testing.

[0030] In this technical solution, a pressure sensor 3 is fixedly installed in the middle of the side wall of the placement platform 13, and a display 31 is fixedly installed at one end of the side wall of the placement platform 13. The display 31 is fixedly connected to the pressure sensor 3 through wires, and the pressure value of the precision casting can be observed.

[0031] When the operator drives the hydraulic push rod 11 to move the moving block 12 horizontally, the precision casting on the placement platform 13 will continuously approach the pressure table 14. After the precision casting on the placement platform 13 is in contact with the pressure table 14, the pressure table 14 will squeeze the precision casting on the placement platform 13. With the help of the pressure sensor 3 installed on the placement platform 13, the pressure value of the precision casting can be accurately detected, so that the operator can accurately control the conveying pressure and perform pressure test on the precision casting.

[0032] In this technical solution, the workbench 1 has a first limiting groove 32 on both sides, and a first limiting block is slidably installed on both sides of the two sets of first limiting grooves 32. The two adjacent sets of first limiting blocks are fixedly installed at both ends of the placement table 13 and the pressing table 14, respectively, so as to limit the placement table 13 and the pressing table 14.

[0033] By driving the hydraulic push rod 11 to continuously push the moving block 12, the precision casting in the placement table 13 can be squeezed. When the precision casting is tested for pressure resistance, the placement table 13 and the pressure table 14 can be limited in conjunction with the limiting slider in the first limiting groove 32 to ensure that the placement table 13 and the pressure table 14 move in the horizontal direction.

[0034] In this technical solution, the testing table 2 has a second limiting groove 33 on both sides, and a second limiting block is slidably installed in each of the two sets of second limiting grooves 33. The two sets of second limiting blocks are fixedly installed on both sides of the limiting seat 23, which can limit the limiting seat 23.

[0035] When the limiting seat 23 is pressed by the two sets of push rods 24, it can be limited on both sides of the limiting seat 23 in conjunction with the second limiting block in the second limiting groove 33, so as to ensure that the limiting seat 23 moves horizontally when it is pressed.

[0036] In this technical solution, the two sets of clamps of the pneumatic clamping table 21 correspond to the fixed plate 22, and the pressure chamber 25 is connected to the cylinder piston inside the pneumatic clamping table 21.

[0037] The pressure chamber 25 plays a crucial role in the pneumatic clamp. It is one of the core components of the pneumatic clamping table 21 to achieve the clamping function. The pressure chamber 25 receives and distributes compressed air to drive the cylinder or other actuators to generate clamping force, thereby achieving the clamping and release of the workpiece.

[0038] In use, the precision casting to be tested is placed on the placement platform 13, and the hydraulic push rod 11 is driven to move the placement platform 13 along the direction of the first limiting groove 32. After the precision casting on the placement platform 13 is in contact with the pressure table 14, the hydraulic push rod 11 continuously pushes the moving block 12 to squeeze the precision casting in the placement platform 13 and perform pressure testing on the precision casting. At the same time, when the operator is performing constant pressure testing on the precision casting, the fixed plate is pushed first. 22 is moved to one side of the pneumatic clamping platform 21. The clamps on the pneumatic clamping platform 21 clamp the fixed plate 22, ensuring that the fixed plate 22 is firmly held by the pneumatic clamping platform 21. The booster pump 26 is driven to deliver air pressure to the pressure chamber 25 inside the pneumatic clamping platform 21 to increase the clamping force of the clamps, so that the clamping force of the clamps on the pneumatic clamping platform 21 reaches the bearing pressure of the precision casting. When the hydraulic push rod 11 pushes the precision casting on the placement platform 13 for pressure testing, the push rod 2 will be pushed simultaneously. 4. The fixed plate 22 and the limiting seat 23 move horizontally. When the fixed plate 22 becomes loose in the pneumatic clamp 21 and the precision casting in the placement table 13 is not damaged, the precision casting can be guaranteed to meet the pressure requirements, thus preventing damage to the precision casting. This effectively avoids damage to the workpiece when multiple sets of precision castings are subjected to pressure testing. At the same time, a pressure sensor 3 is fixedly installed in the middle of the side wall of the placement table 13, and a display 31 is fixedly installed at one end of the side wall of the placement table 13. When the operator drives the hydraulic push rod 11 to push the moving block 12 to move horizontally, the precision casting on the placement table 13 will continuously approach the pressure table 14. After the precision casting on the placement table 13 is in contact with the pressure table 14, the pressure table 14 will squeeze the precision casting on the placement table 13. With the help of the pressure sensor 3 installed on the placement table 13, the pressure value of the precision casting can be accurately detected, so that the operator can accurately control the conveying pressure and perform pressure testing on the precision casting.

[0039] Additional notes: Increasing the air pressure can increase the clamping force of the pneumatic clamp. The clamping force of the pneumatic clamp is mainly determined by the output force of the cylinder, and the output force of the cylinder is directly proportional to the air pressure.

[0040] Pneumatic clamps use compressed air to drive the piston of a cylinder, thereby generating clamping force. The output force (F) of the cylinder can be calculated using the following formula: F = P × A;

[0041] F: Output force (clamping force) of the cylinder;

[0042] P: Air pressure value (usually expressed in MPa or Bar);

[0043] A: Effective area of ​​the cylinder piston.

Claims

1. A device for pressure testing precision castings, comprising a worktable (1), characterised in that: The workbench (1) has a moving groove in the middle, and a moving block (12) is movably installed in the moving groove. A placement platform (13) is fixedly installed on the side wall of the moving block (12). A pressure platform (14) is movably installed in the middle of one side of the workbench (1). The pressure platform (14) corresponds to the placement platform (13). A pressure-bearing support mechanism is installed on the other side of the pressure platform (14). The pressure-bearing support mechanism includes top rods (24) fixedly installed at both ends of the side wall of the pressure table (14), limiting seats (23) fixedly installed at the other end of the two sets of top rods (24), a fixing plate (22) fixedly installed in the middle of the other side of the limiting seat (23), a pneumatic clamp (21) installed on the other side of the fixing plate (22), a pressure chamber (25) fixedly installed on the top of the testing table (2) and set on one side inside the pneumatic clamp (21), a conduit connected to the side wall of the pressure chamber (25), and a booster pump (26) connected to the other end of the conduit. A pressure gauge is connected to one side of the pressure chamber (25).

2. The pressure-bearing detection device for a precision casting according to claim 1, characterized in that: The two sets of clamps of the pneumatic clamp (21) correspond to the fixed plate (22), and the pressure chamber (25) is connected to the cylinder piston inside the pneumatic clamp (21).

3. The device for detecting the pressure-bearing of a precision casting according to claim 1, characterized in that: A hydraulic push rod (11) is fixedly installed on one side of the workbench (1), and the other end of the hydraulic push rod (11) is fixedly installed on the side wall of the moving block (12).

4. The device for detecting the pressure of a precision casting according to claim 1, characterized in that: A pressure sensor (3) is fixedly installed in the middle of the side wall of the placement platform (13), and a display (31) is fixedly installed at one end of the side wall of the placement platform (13). The display (31) is fixedly connected to the pressure sensor (3) through a wire.

5. The device for detecting the pressure of a precision casting according to claim 1, characterized in that: The workbench (1) is provided with first limiting grooves (32) on both sides. First limiting blocks are slidably installed on both sides of the two sets of first limiting grooves (32). The two adjacent sets of first limiting blocks are fixedly installed at both ends of the placement table (13) and the pressing table (14).

6. The device for detecting the pressure of a precision casting according to claim 1, characterized in that: The detection platform (2) has a second limiting groove (33) on both sides. A second limiting block is slidably installed in each of the two sets of second limiting grooves (33). The two sets of second limiting blocks are fixedly installed on both sides of the limiting seat (23).

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