A hydraulic cylinder piston annular groove grooving device

Abstract

The present application relates to a hydraulic cylinder piston annular groove grooving device, and relates to the field of hydraulic cylinder piston rod processing technology equipment, including a base, a chuck, a drive motor, a heat sink, a cooling fan and a tool are arranged on the base, a heat dissipation cavity is arranged in the tool, a heat exchange cavity is arranged in the heat sink, a heat exchange tube is connected between the tool and the heat sink, a drive device is arranged in the heat exchange tube, the output shaft of the drive motor is coaxially fixedly connected to a first drive bevel gear, the rotating shaft of the cooling fan is coaxially fixedly connected to a first driven bevel gear, and the first drive bevel gear is meshed with the first driven bevel gear. When the speed of the drive motor increases, the heat dissipation capacity increases accordingly; when the speed of the drive motor decreases, the heat dissipation capacity decreases accordingly. The heat dissipation capacity can be automatically adjusted as the processing intensity changes, the structural strength of the tool is maintained, and the tool life is extended. The present application has the effect of reducing the temperature fluctuation amplitude of the tool during the grooving process.

Description

Technical Field

[0001] The present application relates to the field of hydraulic cylinder piston rod processing technology and equipment, and in particular to a hydraulic cylinder piston annular groove grooving device. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy. It has a simple structure and reliable operation. It can be used to achieve reciprocating motion without a reduction device, and has no transmission gap and smooth movement. Therefore, it is widely used in the hydraulic systems of various machines. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston rod, a sealing device, a buffer device and an exhaust device. The side of the piston rod needs to be provided with an annular groove for placing a sealing ring.

[0003] Related technology can refer to the Chinese patent with announcement number CN118305602B, which discloses a device and method for opening multiple annular grooves on the piston rod of a hydraulic cylinder, including a gantry fixed on a workbench, the workbench is provided with a clamping mechanism for clamping the piston rod to be grooved, and a pushing mechanism for automatically pushing the piston rod into the clamping mechanism, and a cutting and grinding mechanism located between the clamping mechanism and the pushing mechanism is provided on the crossbeam of the gantry; the cutting and grinding mechanism includes a stepper motor fixed on the top surface of the crossbeam of the gantry, the output shaft of the stepper motor passes through the crossbeam downward, and a main shaft is connected to the extension end, a rotating plate is fixed at the bottom of the main shaft, and a grinding cylinder and a cutting cylinder respectively located on the left and right sides of the main shaft are fixed on the top surface of the rotating plate, the telescopic rod of the cutting cylinder passes through the rotating plate downward, and a tool holder is fixed on the extension end, and a plurality of turning tools are fixed on the bottom surface of the tool holder.

[0004] Regarding the above-mentioned related technologies, the friction between the turning tool and the workpiece during the grooving process generates heat. The structural strength and service life of the tool will be affected at high temperatures. The heat generated by the friction between the tool and the workpiece will vary with the processing intensity. Usually, the tool needs to be equipped with a heat dissipation device. If the traditional method of spraying coolant is used to dissipate heat and cool down, the cooling intensity is difficult to change according to the change of processing intensity, resulting in large fluctuations in the temperature of the tool, affecting the structural strength and service life of the tool. Summary of the invention

[0005] In order to reduce the fluctuation amplitude of the tool temperature during the grooving process, the present application provides a hydraulic cylinder piston annular groove grooving device.

[0006] The present application provides a hydraulic cylinder piston annular groove grooving device, which adopts the following technical solution:

[0007] A hydraulic cylinder piston annular groove grooving device comprises a base, a chuck for clamping a workpiece and a driving motor for driving the chuck to rotate are rotatably connected to the base, a tool is provided on the base, a heat dissipation cavity is provided in the tool, a heat sink and a cooling fan for promoting air flow around the heat sink are provided on the base, a heat exchange cavity is provided in the heat sink, a heat exchange tube for connecting the heat dissipation cavity and the heat exchange cavity is connected between the tool and the heat sink, a heat dissipation passage for coolant circulation is formed between the heat dissipation cavity and the heat exchange cavity through the heat exchange tube, a driving device for promoting the circulation of coolant is provided in the heat exchange tube, an output shaft of the driving motor is coaxially fixedly connected to a first driving bevel gear, a rotating shaft of the cooling fan is coaxially fixedly connected to a first driven bevel gear, and the first driving bevel gear is meshed with the first driven bevel gear.

[0008] By adopting the above technical solution, the piston rod is fixed on the chuck, the driving motor drives the chuck to rotate, the tool contacts the high-speed rotating piston rod, and then an annular groove is opened on the surface of the piston rod to complete the slotting process. The driving motor drives the cooling fan to rotate through the first driving bevel gear and the first driven bevel gear at the same time, promoting the air flow around the heat sink. The coolant circulates in the heat dissipation passage under the drive of the driving device, and conducts the heat of the tool to the heat sink to achieve the heat dissipation process. When the speed of the driving motor increases, the processing intensity increases, the speed of the cooling fan increases, and the heat dissipation capacity increases accordingly; when the speed of the driving motor decreases, the processing intensity decreases, the speed of the cooling fan decreases, and the heat dissipation capacity decreases accordingly. The heat dissipation capacity can be automatically adjusted as the processing intensity changes, which helps to reduce the fluctuation range of the tool temperature during the slotting process, maintain the structural strength of the tool, and extend the service life of the tool.

[0009] Optionally, the driving device includes a first propeller rotatably connected to the heat exchange tube, the output shaft of the driving motor is coaxially fixedly connected to the second driving bevel gear, the rotating shaft of the first propeller is coaxially fixedly connected to the second driven bevel gear, and the second driving bevel gear is meshed with the second driven bevel gear.

[0010] By adopting the above technical solution, the driving motor drives the first propeller to rotate through the second driving bevel gear and the second driven bevel gear, thereby driving the coolant to flow in the cooling passage, thereby realizing thermal circulation between the tool and the heat sink. When the speed of the driving motor increases, the processing intensity increases, the speed of the first propeller increases, and the heat dissipation capacity increases accordingly; when the speed of the driving motor decreases, the processing intensity decreases, the speed of the first propeller decreases, and the heat dissipation capacity decreases accordingly. The heat dissipation capacity can be automatically adjusted as the processing intensity changes, which helps to further reduce the fluctuation range of the tool temperature during the slotting process, maintain the structural strength of the tool, and extend the tool life.

[0011] Optionally, the first propeller is coaxially fixedly connected to a temperature-sensing cylinder, a temperature-sensing plug is slidably connected inside the temperature-sensing cylinder, the sliding direction of the temperature-sensing plug is parallel to the rotation axis of the first propeller, the edge of the temperature-sensing plug is in a sealed state with the inner wall of the temperature-sensing cylinder, mercury is filled between the temperature-sensing plug and the bottom wall of the temperature-sensing cylinder, an end of the temperature-sensing plug facing away from the mercury is fixedly connected to a transmission rod, a transmission block is provided on the transmission rod, a second propeller is rotatably connected inside the heat exchange tube, a transmission groove matched with the transmission block is provided on the second propeller, when the temperature of the coolant rises, the temperature-sensing plug drives the transmission rod to slide in a direction close to the transmission groove, and when the temperature of the coolant decreases, the temperature-sensing plug drives the transmission rod to slide in a direction away from the transmission groove.

[0012] By adopting the above technical solution, when the ambient temperature is too high, the cooling capacity may be insufficient, causing the temperature of the turning tool and the coolant to continue to rise, and the turning tool is difficult to cool down effectively. A temperature-sensing cylinder is set. When the temperature of the coolant rises, the mercury expands and the temperature-sensing plug drives the transmission rod to slide in the direction close to the transmission groove. The transmission block is embedded in the transmission groove, so that the transmission rod can drive the first propeller and the second propeller to rotate at the same time, promoting the circulation of the coolant, thereby enhancing the cooling effect of the turning tool. When the temperature of the coolant decreases, the temperature-sensing plug drives the transmission rod to slide in the direction away from the transmission groove, and the transmission block is separated from the transmission groove. The ultimate heat dissipation capacity can be further increased, expanding the scope of application of the turning tool.

[0013] Optionally, the transmission rod includes a top rod and a tail rod, the top rod is fixedly connected to the transmission block, the tail rod is fixedly connected to the temperature sensing plug, and an elastic member is connected between the top rod and the tail rod.

[0014] By adopting the above technical solution and arranging an elastic member between the top rod and the tail rod, the process of the transmission block being embedded in the transmission groove can be buffered to prevent damage to the second propeller.

[0015] Optionally, a limiting groove is provided at one end of the top rod near the tail rod, and a limiting rod adapted to the limiting groove is fixedly connected to one end of the tail rod near the top rod. The limiting rod is embedded in the limiting groove and slidably connected to the top rod, and the cross-sectional shape of the limiting rod is a rectangle.

[0016] By adopting the above technical solution and providing the limiting groove and the limiting rod, relative rotation between the top rod and the tail rod can be prevented, thereby improving the overall rotation efficiency of the transmission rod.

[0017] Optionally, a first protection box and a second protection box are provided on the base, the first driving bevel gear and the first driven bevel gear are arranged in the first protection box, and the second driving bevel gear and the second driven bevel gear are arranged in the second protection box.

[0018] By adopting the above technical solution, flying iron chips will be continuously generated during the grooving process. The flying iron chips between the first driving bevel gear and the first driven bevel gear will affect the normal transmission. The provision of the first protective box and the second protective box can effectively reduce the influence of the iron chips on the bevel gear transmission.

[0019] Optionally, a protective cover is provided on the base, and a protective sliding door is provided on the protective cover.

[0020] By adopting the above technical solution, a protective cover is provided to prevent iron chips from flying out of the processing range during the processing, thereby protecting the safety of the workers.

[0021] Optionally, a processing chamber is formed between the protective cover and the base, a vent is opened on the base, an exhaust fan is arranged on the base, the exhaust fan is arranged in the vent, the output shaft of the drive motor is coaxially fixedly connected with the third driving bevel gear, the rotating shaft of the exhaust fan is coaxially fixedly connected with the third driven bevel gear, and the third driving bevel gear is meshed with the third driven bevel gear.

[0022] By adopting the above technical solution, the exhaust fan rotates during processing, so that negative pressure is generated in the processing chamber, further limiting the splashing of iron chips.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When the speed of the drive motor increases, the processing intensity increases, the speed of the cooling fan increases, and the heat dissipation capacity increases accordingly. When the speed of the drive motor decreases, the processing intensity decreases, the speed of the cooling fan decreases, and the heat dissipation capacity decreases accordingly. The heat dissipation capacity of the tool can be automatically adjusted as the processing intensity changes, which helps to reduce the fluctuation range of the tool temperature during the slotting process, maintain the structural strength of the tool, and extend the tool life;

[0025] 2. The driving motor drives the first propeller to rotate through the second driving bevel gear and the second driven bevel gear, thereby driving the coolant to flow in the cooling passage. When the speed of the driving motor increases, the processing intensity increases, the speed of the first propeller increases, and the heat dissipation capacity increases accordingly. When the speed of the driving motor decreases, the processing intensity decreases, the speed of the first propeller decreases, and the heat dissipation capacity decreases accordingly, which helps to reduce the fluctuation range of the tool temperature during the grooving process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the heat sink used to illustrate the embodiment of the present application.

[0027] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0028] Figure 3It is a schematic diagram for showing the internal structure of the heat exchange tube in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram for showing the internal structure of the driving device in the embodiment of the present application.

[0030] Figure 5 yes Figure 3 Schematic diagram of the enlarged portion B.

[0031] Figure 6 yes Figure 4 Enlarged schematic diagram of part C.

[0032] Figure 7 It is a schematic diagram for showing the internal structure of the exhaust fan in the embodiment of the present application.

[0033] Figure 8 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0034] Fig. 9 yes Figure 7 Enlarged schematic diagram of part D in the figure.

[0035] Description of reference numerals: 1. base; 11. chuck; 12. heat sink; 121. heat exchange chamber; 13. cooling fan; 131. first driven bevel gear; 14. first protective box; 15. second protective box; 16. vent; 17. exhaust fan; 171. third driven bevel gear; 2. drive motor; 21. first drive bevel gear; 22. second drive bevel gear; 23. third drive bevel gear; 3. tool; 31. heat dissipation cavity; 32, heat exchange tube; 4, driving device; 41, first propeller; 411, second driven bevel gear; 42, second propeller; 421, transmission groove; 5, temperature sensing tube; 51, temperature sensing plug; 52, mercury; 53, transmission rod; 531, top rod; 532, tail rod; 533, elastic part; 534, limit groove; 535, limit rod; 536, transmission block; 6, protective cover; 61, protective sliding door; 62, processing cavity. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0037] The embodiment of the present application discloses a device for forming an annular groove of a hydraulic cylinder piston.

[0038] Reference Figure 1 and Figure 2, a hydraulic cylinder piston annular groove grooving device, including a base 1, the base 1 plays a supporting role and is used to install and fix various devices. A chuck 11 and a drive motor 2 are installed on the base 1, the chuck 11 is rotatably connected to the base 1 and the rotation axis of the chuck 11 is horizontally arranged, the drive motor 2 is fixed on the base 1, and the output shaft of the drive motor 2 is coaxially fixedly connected to the chuck 11. A tool 3 is installed on the base 1, and the tool 3 is equipped with a displacement component, which can drive the tool 3 to move its position. It is a prior art and will not be elaborated in this application. During processing, the piston rod is fixed on the chuck 11, the drive motor 2 is started to drive the chuck 11 to rotate, and the tool 3 is moved so that the tool 3 contacts the surface of the high-speed rotating piston rod, and an annular groove is opened on the surface of the piston rod. At the same time, the tool 3 generates heat, and the heat generation varies with the change of the processing intensity. A heat dissipation cavity 31 is opened inside the tool 3, and the tool 3 dissipates heat through the coolant circulating in the heat dissipation cavity 31.

[0039] Reference Figure 2 and Figure 3 A heat sink 12 is mounted on the base 1, a heat exchange cavity 121 is arranged in the heat sink 12, a heat exchange tube 32 is connected between the tool 3 and the heat sink 12, so that the heat sink 31 and the two ends of the heat exchange cavity 121 are connected, and a heat dissipation passage is formed between the heat sink 31 and the heat exchange cavity 121 through the heat exchange tube 32 for cooling liquid circulation. A cooling fan 13 is mounted on the base 1, and the heat sink 12 is located in the air outlet direction of the cooling fan 13. The rotating cooling fan 13 can promote the air flow around the heat sink 12, thereby cooling the cooling liquid inside it.

[0040] Reference Figure 2 The output shaft of the driving motor 2 is coaxially fixedly connected with the first driving bevel gear 21, and the rotating shaft of the cooling fan 13 is coaxially fixedly connected with the first driven bevel gear 131. The first driving bevel gear 21 is meshed with the first driven bevel gear 131, and the power output by the driving motor 2 can be synchronously transmitted to the cooling fan 13. The rotation speed of the output shaft of the driving motor 2 determines the rotation speed of the piston rod. The rotation speed of the piston rod is positively correlated with the processing strength. When the rotation speed of the driving motor 2 increases, the processing strength of the piston rod increases, the heating situation intensifies, the rotation speed of the cooling fan 13 increases at the same time, and the heat dissipation capacity increases accordingly; when the rotation speed of the driving motor 2 decreases, the processing strength of the piston rod decreases, the rotation speed of the cooling fan 13 decreases at the same time, and the heat dissipation capacity decreases accordingly. The heat dissipation capacity is automatically adjusted with the change of the processing strength, which helps to reduce the fluctuation amplitude of the temperature of the tool 3 during the slotting process, maintain the temperature stability of the tool 3 and the structural strength of the tool 3, and extend the service life of the tool 3.

[0041] Reference Figure 2 and Figure 3The heat exchange tube 32 is provided with a driving device 4, including a first propeller 41, which is rotatably connected to the heat exchange tube 32, and its rotation axis is parallel to the length direction of the heat exchange tube 32 in which it is located. The rotation shaft of the first propeller 41 extends outside the heat exchange tube 32 and is coaxially fixedly connected to the second driven bevel gear 411. The rotation shaft of the first propeller 41 is waterproof and sealed with the tube wall of the heat exchange tube 32. The output shaft of the drive motor 2 is coaxially fixedly connected to the second drive bevel gear 22, and the second drive bevel gear 22 is meshed with the second driven bevel gear 411. The drive motor 2 is fixedly connected to the drive chuck 11 (refer to Figure 1 ) rotates, the first propeller 41 is driven to rotate through the second driving bevel gear 22 and the second driven bevel gear 411, driving the coolant to flow in the cooling passage. When the speed of the driving motor 2 increases, the speed of the first propeller 41 increases, and the heat dissipation capacity of the tool 3 increases accordingly; when the speed of the driving motor 2 decreases, the speed of the first propeller 41 decreases, and the heat dissipation capacity of the tool 3 decreases accordingly. The coolant flow rate can be automatically adjusted as the processing intensity changes, which helps to further reduce the fluctuation range of the temperature of the tool 3 during the slotting process.

[0042] Reference Figure 3 and Figure 4 , the room temperature of the production workshop is greatly affected by the change of ambient temperature. When the ambient temperature is too high, the tool 3 may have insufficient cooling capacity, resulting in the tool 3 and the coolant being continuously maintained at a high temperature, and the tool 3 is difficult to cool down effectively. In order to solve the above problems, in the present application, a temperature-sensing cylinder 5 is coaxially fixedly connected to the first propeller 41. The temperature-sensing cylinder 5 is a cylindrical cylinder with a single-side opening as a whole. The temperature-sensing cylinder 5 is provided with a temperature-sensing plug 51. The cross-sectional shape and size of the temperature-sensing plug 51 are adapted to the temperature-sensing cylinder 5. The temperature-sensing plug 51 is slidably connected to the temperature-sensing cylinder 5, and the sliding direction is parallel to the rotation axis of the first propeller 41. Mercury 52 is filled between the temperature-sensing plug 51 and the bottom wall of the temperature-sensing cylinder 5, and the edge of the temperature-sensing plug 51 is in a sealed state with the inner wall of the temperature-sensing cylinder 5 to prevent the leakage of mercury 52. ​​Mercury 52 will expand and contract with the change of the temperature of the temperature-sensing cylinder 5, thereby driving the sliding of the temperature-sensing plug 51.

[0043] Reference Figure 5 and Figure 6The end of the temperature sensing plug 51 facing away from the mercury 52 is fixedly connected with a transmission rod 53, the length direction of the transmission rod 53 is parallel to the length direction of the temperature sensing tube 5, and a transmission block 536 is provided on the transmission rod 53. The heat exchange tube 32 is rotatably connected with the second propeller 42, and a transmission groove 421 is provided at the center of the second propeller 42. The shape and size of the transmission groove 421 are adapted to the transmission block 536. When the temperature of the coolant increases, the mercury 52 expands, and the temperature sensing plug 51 drives the transmission rod 53 to slide in the direction close to the transmission groove 421. When the temperature reaches a preset height, the transmission block 536 begins to gradually embed into the transmission groove 421. At this time, the transmission rod 53 can simultaneously drive the first propeller 41 and the second propeller 42 to rotate, promote the circulation of the coolant, and enhance the cooling effect of the tool 3. When the temperature of the coolant decreases, the temperature sensing plug 51 drives the transmission rod 53 to slide in the direction away from the transmission groove 421, and the transmission block 536 gradually separates from the transmission groove 421, restoring the situation where the first propeller 41 rotates alone, thereby increasing the ultimate heat dissipation capacity of the tool 3.

[0044] Reference Figure 5 The transmission rod 53 includes a top rod 531 and a tail rod 532. The top rod 531 is fixedly connected to the transmission block 536, and the tail rod 532 is fixedly connected to the temperature sensing plug 51. An elastic member 533 is connected between the top rod 531 and the tail rod 532. The elastic member 533 can be a spring or other elastic member. When the transmission rod 53 gradually approaches the second propeller 42 and is about to be embedded in the transmission groove 421, the elastic member 533 can buffer the process of the transmission block 536 being embedded in the transmission groove 421, so as to avoid the transmission rod 53 from having a hard contact with the second propeller 42 because it is not aligned with the transmission groove 421, thereby preventing the second propeller 42 from being damaged.

[0045] Reference Figure 5 and Figure 6 The elastic member 533 itself has elasticity. When the elastic member 533 is used for transmission, a part of kinetic energy is usually lost, which affects the transmission effect. A limiting groove 534 is provided at one end of the top rod 531 close to the tail rod 532. The tail rod 532 is fixedly connected to the limiting rod 535 at one end close to the top rod 531. The shape and size of the limiting rod 535 are adapted to the limiting groove 534. The cross-sectional shape of the limiting rod 535 is rectangular. The limiting rod 535 is embedded in the limiting groove 534 and is slidably connected to the top rod 531, which can prevent relative rotation between the top rod 531 and the tail rod 532, thereby improving the overall rotation efficiency of the transmission rod 53.

[0046] Reference Figure 2 and Figure 7During the grooving process, flying iron chips will be continuously generated, and the flying iron chips between the first driving bevel gear 21 and the first driven bevel gear 131 may affect their normal transmission. In the present application, the first protection box 14 and the second protection box 15 are installed on the base 1, the first driving bevel gear 21 and the first driven bevel gear 131 are arranged in the first protection box 14, and the second driving bevel gear 22 and the second driven bevel gear 411 are arranged in the second protection box 15, which can effectively reduce the influence of iron chips on the bevel gear transmission.

[0047] Reference Figure 8 The base 1 is provided with a protective cover 6, and the protective cover 6 is provided with a protective sliding door 61, which can prevent iron filings from flying out of the processing range during the processing and protect the safety of the workers.

[0048] Reference Figure 1 , Figure 8 and Fig. 9 A processing chamber 62 is formed between the protective cover 6 and the base 1. Various equipment components on the base 1 are arranged in the processing chamber 62. A vent 16 is opened on the base 1. An exhaust fan 17 is arranged on the base 1. The exhaust fan 17 is arranged in the vent 16. The output shaft of the drive motor 2 is coaxially fixedly connected with the third drive bevel gear 23. The rotating shaft of the exhaust fan 17 is coaxially fixedly connected with the third driven bevel gear 171. The third drive bevel gear 23 is meshed with the third driven bevel gear 171. During processing, the drive motor 2 drives the exhaust fan 17 to rotate, and negative pressure is generated in the processing chamber 62, which can limit the splashing of iron chips and ensure that various components are not disturbed by iron chips and operate normally.

[0049] The implementation principle of a hydraulic cylinder piston annular groove grooving device in the embodiment of the present application is as follows: during processing, the piston rod is fixed on the chuck 11, the driving motor 2 is started, the driving chuck 11 is driven to rotate and then the piston rod is driven to rotate, the position of the tool 3 is moved so that it contacts the surface of the piston rod rotating at high speed, and an annular groove is opened on the surface of the piston rod. While driving the chuck 11 to rotate, the driving motor 2 drives the cooling fan 13 to rotate through the first driving bevel gear 21 and the first driven bevel gear 131, promotes the air flow around the heat sink 12, drives the first propeller 41 to rotate through the second driving bevel gear 22 and the second driven bevel gear 411, drives the coolant to circulate in the heat dissipation passage, and continuously conducts the heat of the tool 3 to the heat sink 12, thereby realizing the heat dissipation process. When the speed of the driving motor 2 is increased, the processing intensity is increased, the speed of the cooling fan 13 and the first propeller 41 is increased, and the heat dissipation capacity is increased accordingly; when the speed of the driving motor 2 is reduced, the processing intensity is reduced, the speed of the cooling fan 13 and the first propeller 41 is reduced, and the heat dissipation capacity is reduced accordingly. The heat dissipation capacity can be automatically adjusted as the processing intensity changes, which helps to reduce the fluctuation range of the temperature of the tool 3 during the grooving process, maintain the structural strength of the tool 3, and extend the service life of the tool 3.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydraulic cylinder piston annular groove grooving device, comprising a base (1), a chuck (11) for clamping a workpiece and a drive motor (2) for driving the chuck (11) to rotate are rotatably connected to the base (1), a tool (3) is provided on the base (1), and the characteristics are: The tool (3) is provided with a heat dissipation cavity (31), the base (1) is provided with a heat dissipation fin (12) and a heat dissipation fan (13) for promoting air flow around the heat dissipation fin (12), the heat dissipation fin (12) is provided with a heat exchange cavity (121), a heat exchange tube (32) for connecting the heat dissipation cavity (31) and the heat exchange cavity (121) is connected between the tool (3) and the heat dissipation fin (12), a heat dissipation passage for cooling liquid circulation is formed between the heat dissipation cavity (31) and the heat exchange cavity (121) through the heat exchange tube (32), and a heat exchange tube (32) is provided inside the heat exchange tube (32) for cooling liquid circulation. A drive device (4) for promoting the circulation of coolant, wherein the output shaft of the drive motor (2) is coaxially fixedly connected to a first drive bevel gear (21), the rotating shaft of the cooling fan (13) is coaxially fixedly connected to a first driven bevel gear (131), the first drive bevel gear (21) meshes with the first driven bevel gear (131), the drive device (4) comprises a first propeller (41) rotatably connected to a heat exchange tube (32), the output shaft of the drive motor (2) is coaxially fixedly connected to a second drive bevel gear (22), the rotating shaft of the first propeller (41) is coaxially fixedly connected to the heat exchange tube (32), The shaft is fixedly connected with a second driven bevel gear (411), the second driving bevel gear (22) is meshed with the second driven bevel gear (411), the first propeller (41) is coaxially fixedly connected with a temperature sensing tube (5), a temperature sensing plug (51) is slidably connected inside the temperature sensing tube (5), the sliding direction of the temperature sensing plug (51) is parallel to the rotation axis of the first propeller (41), the edge of the temperature sensing plug (51) and the inner wall of the temperature sensing tube (5) are in a sealed state, mercury (52) is filled between the temperature sensing plug (51) and the bottom wall of the temperature sensing tube (5), and the temperature sensing plug (51) is A transmission rod (53) is fixedly connected to one end facing away from the mercury (52), and a transmission block (536) is provided on the transmission rod (53). A second propeller (42) is rotatably connected in the heat exchange tube (32), and a transmission groove (421) matched with the transmission block (536) is provided on the second propeller (42). When the temperature of the coolant increases, the temperature sensing plug (51) drives the transmission rod (53) to slide in a direction close to the transmission groove (421), and when the temperature of the coolant decreases, the temperature sensing plug (51) drives the transmission rod (53) to slide in a direction away from the transmission groove (421).

2. A hydraulic cylinder piston annular groove grooving device according to claim 1, characterized in that: The transmission rod (53) comprises a top rod (531) and a tail rod (532); the top rod (531) is fixedly connected to the transmission block (536); the tail rod (532) is fixedly connected to the temperature sensing plug (51); and an elastic member (533) is connected between the top rod (531) and the tail rod (532).

3. A hydraulic cylinder piston annular groove grooving device according to claim 2, characterized in that: A limiting groove (534) is provided at one end of the top rod (531) close to the tail rod (532); a limiting rod (535) adapted to the limiting groove (534) is fixedly connected to one end of the tail rod (532) close to the top rod (531); the limiting rod (535) is embedded in the limiting groove (534) and is slidably connected to the top rod (531); and the cross-sectional shape of the limiting rod (535) is rectangular.

4. The hydraulic cylinder piston annular groove grooving device according to claim 1, characterized in that: A first protection box (14) and a second protection box (15) are provided on the base (1); a first driving bevel gear (21) and a first driven bevel gear (131) are arranged in the first protection box (14); and a second driving bevel gear (22) and a second driven bevel gear (411) are arranged in the second protection box (15).

5. The hydraulic cylinder piston annular groove grooving device according to claim 1, characterized in that: The base (1) is provided with a protective cover (6), and the protective cover (6) is provided with a protective sliding door (61).

6. A hydraulic cylinder piston annular groove grooving device according to claim 5, characterized in that: A processing chamber (62) is formed between the protective cover (6) and the base (1); a vent (16) is provided on the base (1); an exhaust fan (17) is provided on the base (1); the exhaust fan (17) is arranged in the vent (16); the output shaft of the drive motor (2) is coaxially fixedly connected to a third drive bevel gear (23); the rotating shaft of the exhaust fan (17) is coaxially fixedly connected to a third driven bevel gear (171); the third drive bevel gear (23) is meshed with the third driven bevel gear (171).

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