A piston stress-relief tempering shrinkage adjustable structure

Abstract

This utility model discloses an adjustable piston shrinkage structure for stress relief and tempering. The utility model includes: a worktable with a positioning assembly at its upper end; two sets of columns are fixedly connected to the upper end of the worktable; a crossbeam is fixedly connected to the upper end of each column; and a constraint assembly is located at the bottom of the crossbeam. The constraint assembly includes a lead screw, a connecting plate, a sliding rod, a limiting plate, a constraint block, and a pressure sensor. The lead screw is threadedly connected to the crossbeam, the connecting plate is rotatably connected to the lead screw, the sliding rod is slidably connected to the connecting plate, the limiting plate is fixedly connected to the upper end of the sliding rod, and the constraint block is fixedly connected to the bottom end of the sliding rod. The constraint assembly can apply downward pressure to the piston, and the pressure sensor can monitor the downward pressure in real time. This allows the operator to set an appropriate downward pressure based on the material, size, and other parameters of different pistons, achieving initial control over the shrinkage.

Description

Technical Field

[0001] This utility model relates to the field of piston processing technology, specifically to a piston stress-relief tempering shrinkage adjustable structure. Background Technology

[0002] The piston is one of the core components of an internal combustion engine. Its working environment is extremely harsh, requiring it to withstand high temperatures, high pressures, and frequent mechanical impacts. During the manufacturing process of the piston, casting, forging, and other processes can generate residual stress inside the piston. If this residual stress is not eliminated in time, it can lead to problems such as deformation and cracking of the piston during use, seriously affecting the performance and service life of the internal combustion engine.

[0003] Stress-relief tempering is a key process for eliminating residual stress in pistons. By heating the piston to a certain temperature and holding it at that temperature for a period of time, followed by slow cooling, the residual stress inside the piston can be effectively reduced. However, during stress-relief tempering, the piston inevitably contracts, and traditional piston stress-relief tempering devices cannot effectively control the amount of contraction. Different models and materials of pistons exhibit different contraction characteristics during stress-relief tempering, and traditional devices, which use fixed constraint methods, are difficult to adapt to the contraction requirements of different pistons. Utility Model Content

[0004] The purpose of this invention is to provide a piston stress-relief tempering shrinkage adjustable structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable piston stress-relief tempering shrinkage structure, comprising: a worktable, a positioning component provided at the upper end of the worktable, two sets of columns fixedly connected to the upper end of the worktable, a crossbeam fixedly connected to the upper end of the columns, a constraint component provided at the bottom of the crossbeam, the constraint component comprising a lead screw, a connecting plate, a sliding rod, a limiting plate, a constraint block, and a pressure sensor, the lead screw being threadedly connected to the crossbeam, the connecting plate being rotatably connected to the lead screw, the sliding rod being slidably connected to the connecting plate, the limiting plate being fixedly connected to the upper end of the sliding rod, the constraint block being fixedly connected to the bottom end of the sliding rod, and the pressure sensor being fixedly connected to the bottom of the connecting plate, with the detection end of the pressure sensor being fixedly connected to the constraint block.

[0006] Furthermore, the constraint assembly also includes a limiting rod, a turntable, and a second temperature sensor. The limiting rod is fixedly connected to the upper end of the connecting plate, and two sets of limiting rods are provided. The limiting rod is slidably connected to the crossbeam. The turntable is fixedly connected to the upper end of the lead screw. The second temperature sensor is fixedly connected to the bottom of the constraint block, and the bottom surface of the second temperature sensor is kept horizontal with the bottom surface of the constraint block.

[0007] Furthermore, the positioning component includes a support plate, a positioning cylinder, and a temperature sensor. The support plate is fixedly connected to the upper end of the worktable, the positioning cylinder is fixedly connected to the upper end of the support plate, and the temperature sensor is fixedly connected to the upper end of the support plate, with the upper end of the temperature sensor being horizontal to the upper end of the support plate.

[0008] Furthermore, a heating chamber is fixedly connected to the upper end of the support plate, and an electric heating tube is fixedly connected inside the heating chamber. Multiple sets of electric heating tubes are provided, and a controller is provided on the front of the workbench.

[0009] Furthermore, the bottom of the workbench is fixedly connected to a support column, and four sets of support columns are provided. The bottom of the support column is fixedly connected to a base plate.

[0010] Furthermore, a cooling liquid storage tank is provided at the upper end of the base plate, and a pressure pump is provided at the upper end of the base plate. The inlet of the pressure pump is fixedly connected to the cooling liquid storage tank, and the outlet of the pressure pump is fixedly connected to a rigid inlet pipe.

[0011] Furthermore, a water inlet hose is fixedly connected to the bottom of the crossbeam, the water inlet hose is fixedly connected to the constraint pressure block, the water inlet rigid pipe is connected to the water inlet hose, a return water hose is fixedly connected to the bottom of the crossbeam, the return water hose is fixedly connected to the constraint pressure block, and a return water rigid pipe is fixedly connected to the upper end of the crossbeam.

[0012] Furthermore, a cooling pipe is fixedly connected to the bottom end of the return water hard pipe, the cooling pipe is fixedly connected to the cooling liquid storage tank, and a fan is fixedly connected between the two sets of support columns, with the fan located above the cooling pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention uses a constraint component to apply downward pressure to the piston, and a pressure sensor to monitor the pressure in real time. This allows operators to set appropriate downward pressure based on the material, size, and other parameters of different pistons, thus achieving preliminary control over the amount of contraction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the constraint component;

[0017] Figure 3 for Figure 1 A schematic diagram of the positioning component;

[0018] Figure 4 for Figure 1A top view structural diagram of the positioning component.

[0019] Reference numerals: 1. Workbench; 2. Positioning assembly; 21. Bearing plate; 22. Positioning cylinder; 23. Temperature sensor one; 3. Column; 4. Crossbeam; 5. Constraint assembly; 51. Lead screw; 52. Connecting plate; 53. Limiting rod; 54. Turntable; 55. Slide rod; 56. Limiting plate; 57. Constraint block; 58. Pressure sensor; 59. Temperature sensor two; 6. Heating chamber; 7. Electric heating tube; 8. Controller; 9. Support column; 10. Base plate; 11. Cooling liquid storage tank; 12. Pressurization pump; 13. Inlet water pipe; 14. Inlet water hose; 15. Return water hose; 16. Return water pipe; 17. Cooling pipe; 18. Fan. Detailed Implementation

[0020] 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.

[0021] Please refer to the following: Figures 1-4 ,in Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the constraint component; Figure 3 for Figure 1 A schematic diagram of the positioning component; Figure 4 for Figure 1A top view structural diagram of a positioning component, illustrating an adjustable piston stress-relief tempering shrinkage structure, includes: a worktable 1, a positioning component 2 mounted on the upper end of the worktable 1, two sets of columns 3 fixedly connected to the upper end of the worktable 1, a crossbeam 4 fixedly connected to the upper end of the columns 3, and a constraint component 5 mounted at the bottom of the crossbeam 4. The constraint component 5 includes a lead screw 51, a connecting plate 52, a sliding rod 55, a limiting plate 56, a constraint pressure block 57, and a pressure sensor 58. The lead screw 51 is threadedly connected to the crossbeam 4, the connecting plate 52 is rotatably connected to the lead screw 51, and the sliding rod 55 is rotatably connected to the connecting plate 56. The connecting plate 52 is slidably connected, the limiting piece 56 is fixedly connected to the upper end of the slide rod 55, the constraint block 57 is fixedly connected to the bottom end of the slide rod 55, and the pressure sensor 58 is fixedly connected to the bottom of the connecting plate 52, and the detection end of the pressure sensor 58 is fixedly connected to the constraint block 57. The constraint block 57 is made of high temperature resistant rubber, and its lower surface is adapted to the shape of the upper surface of the piston, so that it can make close contact with the piston surface without damaging the piston surface. The constraint block 57 has a cooling channel inside for coolant to pass through, and the cooling channel is connected to the inlet hose 14 and the return hose 15 respectively.

[0022] The constraint assembly 5 also includes a limiting rod 53, a turntable 54, and a second temperature sensor 59. The limiting rod 53 is fixedly connected to the upper end of the connecting plate 52, and there are two sets of limiting rods 53. The limiting rod 53 is slidably connected to the crossbeam 4. The turntable 54 is fixedly connected to the upper end of the lead screw 51. The second temperature sensor 59 is fixedly connected to the bottom of the constraint block 57, and the bottom surface of the second temperature sensor 59 is kept horizontal with the bottom surface of the constraint block 57.

[0023] The positioning assembly 2 includes a support plate 21, a positioning cylinder 22, and a temperature sensor 23. The support plate 21 is fixedly connected to the upper end of the worktable 1, the positioning cylinder 22 is fixedly connected to the upper end of the support plate 21, and the temperature sensor 23 is fixedly connected to the upper end of the support plate 21. The upper end of the temperature sensor 23 is horizontal with the upper end of the support plate 21, and the inner wall of the positioning cylinder 22 matches the shape of the piston.

[0024] A heating chamber 6 is fixedly connected to the upper end of the support plate 21. An electric heating tube 7 is fixedly connected inside the heating chamber 6, and multiple sets of electric heating tubes 7 are provided. A controller 8 is provided on the front of the workbench 1.

[0025] The bottom of the workbench 1 is fixedly connected to a support column 9, and there are four sets of support columns 9. The bottom of the support column 9 is fixedly connected to a base plate 10.

[0026] A cooling liquid storage tank 11 is provided on the upper end of the base plate 10, and a pressure pump 12 is provided on the upper end of the base plate 10. The water inlet of the pressure pump 12 is fixedly connected to the cooling liquid storage tank 11, and the water outlet of the pressure pump 12 is fixedly connected to the water inlet pipe 13.

[0027] A water inlet hose 14 is fixedly connected to the bottom of the crossbeam 4. The water inlet hose 14 is fixedly connected to the constraint block 57. The water inlet rigid pipe 13 is connected to the water inlet hose 14. A water return hose 15 is fixedly connected to the bottom of the crossbeam 4. The water return hose 15 is fixedly connected to the constraint block 57. A water return rigid pipe 16 is fixedly connected to the upper end of the crossbeam 4. The lengths of the water inlet hose 14 and the water return hose 15 can accommodate the up and down movement of the constraint block 57.

[0028] A cooling pipe 17 is fixedly connected to the bottom end of the return water hard pipe 16. The cooling pipe 17 is fixedly connected to the cooling liquid storage tank 11. A fan 18 is fixedly connected between the two sets of support columns 9. The fan 18 is located above the cooling pipe 17. By blowing air onto the cooling pipe 17 through the fan 18, the coolant inside the cooling pipe 17 can be cooled.

[0029] It should be noted that temperature sensor 23, pressure sensor 58, temperature sensor 59, electric heating element 7, controller 8, pressurization pump 12, and fan 18 can all be purchased on the market or customized from the factory. The wiring connection method and control method are mature technologies in this field and have been fully disclosed. Therefore, they will not be described again in this article.

[0030] In summary, the present invention provides a piston stress-relief tempering shrinkage adjustable structure. During operation, the piston is placed inside the positioning cylinder 22, and the constraint block 57 is pressed downwards by rotating the turntable 54. When the constraint block 57 presses downwards on the piston, the pressure sensor 58 can monitor the constraint pressure on the piston in real time. The operator can set an appropriate constraint pressure according to the material, size and other parameters of different pistons to achieve preliminary control of the shrinkage.

[0031] The piston inside the positioning cylinder 22 can be heated by the electric heating tube 7. The temperature at the upper and lower ends of the piston can be monitored by temperature sensor 23 and temperature sensor 59 respectively. The coolant inside the cooling reservoir 11 can be sent into the constraining block 57 by the pressurizing pump 12. After entering the constraining block 57, the coolant can cool the constraining block 57. Through temperature transfer, the constraining block 57 can cool the top of the piston. At this time, a reasonable temperature gradient can be formed in the piston during stress relief tempering. By adjusting the temperature gradient, the contraction rate of different parts of the piston can be changed, thereby realizing the control of the overall contraction. After passing through the constraining block 57, the coolant enters the cooling pipe 17 through the return water hose 15 and the return water hard pipe 16. After the coolant is cooled by the fan 18 blowing air on the surface of the cooling pipe 17, it returns to the cooling reservoir 11.

Claims

1. A piston stress-relief tempering shrinkage adjustable structure, characterized in that, include: A workbench (1) is provided with a positioning component (2) at its upper end. A column (3) is fixedly connected to the upper end of the workbench (1), and two sets of columns (3) are provided. A crossbeam (4) is fixedly connected to the upper end of the column (3). A constraint component (5) is provided at the bottom of the crossbeam (4). The constraint component (5) includes a lead screw (51), a connecting plate (52), a slide rod (55), a limiting piece (56), a constraint pressure block (57), and a pressure sensor (58). The lead screw (51) is threadedly connected to the crossbeam (4), the connecting plate (52) is rotatably connected to the lead screw (51), the slide rod (55) is slidably connected to the connecting plate (52), the limiting piece (56) is fixedly connected to the upper end of the slide rod (55), the constraint block (57) is fixedly connected to the bottom end of the slide rod (55), the pressure sensor (58) is fixedly connected to the bottom of the connecting plate (52), and the detection end of the pressure sensor (58) is fixedly connected to the constraint block (57).

2. The piston stress-relief tempering shrinkage adjustable structure according to claim 1, characterized in that, The constraint assembly (5) also includes a limiting rod (53), a turntable (54) and a second temperature sensor (59). The limiting rod (53) is fixedly connected to the upper end of the connecting plate (52), and there are two sets of limiting rods (53). The limiting rod (53) is slidably connected to the crossbeam (4). The turntable (54) is fixedly connected to the upper end of the lead screw (51). The second temperature sensor (59) is fixedly connected to the bottom of the constraint block (57), and the bottom surface of the second temperature sensor (59) is level with the bottom surface of the constraint block (57).

3. The piston stress-relief tempering shrinkage adjustable structure according to claim 2, characterized in that, The positioning component (2) includes a support plate (21), a positioning cylinder (22), and a temperature sensor (23). The support plate (21) is fixedly connected to the upper end of the workbench (1), the positioning cylinder (22) is fixedly connected to the upper end of the support plate (21), and the temperature sensor (23) is fixedly connected to the upper end of the support plate (21). The upper end of the temperature sensor (23) is horizontal to the upper end of the support plate (21).

4. The piston stress-relief tempering shrinkage adjustable structure according to claim 3, characterized in that, The upper end of the support plate (21) is fixedly connected to a heating chamber (6), and an electric heating tube (7) is fixedly connected inside the heating chamber (6). Multiple sets of electric heating tubes (7) are provided. A controller (8) is provided on the front of the workbench (1).

5. The piston stress-relief tempering shrinkage adjustable structure according to claim 4, characterized in that, The workbench (1) is fixedly connected to a support column (9) at the bottom, and there are four sets of support columns (9). The bottom of the support column (9) is fixedly connected to a base plate (10).

6. The piston stress-relief tempering shrinkage adjustable structure according to claim 5, characterized in that, A cooling liquid storage tank (11) is provided on the upper end of the base plate (10), and a pressure pump (12) is provided on the upper end of the base plate (10). The inlet of the pressure pump (12) is fixedly connected to the cooling liquid storage tank (11), and the outlet of the pressure pump (12) is fixedly connected to the inlet pipe (13).

7. The piston stress-relief tempering shrinkage adjustable structure according to claim 6, characterized in that, The bottom of the crossbeam (4) is fixedly connected to a water inlet hose (14), the water inlet hose (14) is fixedly connected to a constraint block (57), the water inlet hard pipe (13) is connected to the water inlet hose (14), the bottom of the crossbeam (4) is fixedly connected to a return water hose (15), the return water hose (15) is fixedly connected to the constraint block (57), and the upper end of the crossbeam (4) is fixedly connected to a return water hard pipe (16).

8. The piston stress-relief tempering shrinkage adjustable structure according to claim 7, characterized in that, The bottom end of the return water hard pipe (16) is fixedly connected to a cooling pipe (17), the cooling pipe (17) is fixedly connected to a cooling liquid tank (11), and a fan (18) is fixedly connected between the two sets of support columns (9), the fan (18) being located above the cooling pipe (17).

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