Tool and method for carburizing and quenching locomotive gear

Abstract

The invention relates to the technical field of gear machining, and discloses a locomotive gear carburizing and quenching tool and method.The tool comprises a carburizing cabin, a quenching cabin is arranged below the carburizing cabin, a clamping device driven by a material taking device is arranged in the quenching cabin, a cooling device is arranged above the carburizing cabin, and the material taking device comprises a first push rod; a material pushing plate is fixedly installed at one end of a piston rod of the first push rod, a material pushing ring base is fixedly installed on the material pushing plate, a main rotating shaft and an auxiliary rotating shaft driven by a motor are arranged in the material pushing ring base in a sleeved mode, and a first sliding block is fixedly installed at the end, protruding out of the auxiliary rotating shaft, of the main rotating shaft. During use, through the synergistic effect of the first push rod, the material pushing plate, the material pushing ring seat, the main rotating shaft and the auxiliary rotating shaft, automatic transfer of the gear between the carburizing cabin and the quenching cabin is achieved, and possible damage to the gear in the manual transfer process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of gear processing, and in particular to a tool and method for carburizing and quenching locomotive gears. Background Art

[0002] Fast heavy-haul locomotives are specifically designed to haul heavy freight trains and are capable of operating at relatively high speeds. These locomotives combine the high tractive effort required for heavy-haul transport with the speed advantages of fast trains, aiming to improve freight efficiency and reduce unit transportation costs.

[0003] Locomotive gears are key components in the locomotive transmission system, and their performance directly affects the operating efficiency and safety of the locomotive.

[0004] Carburizing and quenching are key heat treatment processes for improving the surface hardness and wear resistance of locomotive gears. In the manufacturing process of locomotive gears, carburizing and quenching are key heat treatment processes for improving the surface hardness and wear resistance of gears. However, during the carburizing and quenching process, gears often deform due to thermal stress and structural stress, affecting the accuracy and service life of the gears. Common deformation types include elliptical deformation, taper deformation, warping deformation, and bending deformation.

[0005] Carburizing is a metal surface treatment process. The specific method is to place the workpiece in an active carburizing medium and heat it to a single-phase austenite zone of 900-950 degrees Celsius. After holding the heat for a sufficient time, the active carbon atoms decomposed by the carburizing medium penetrate into the surface of the steel part. After the carburizing treatment is completed, the gear is quenched by immersing it in quenching oil. However, in the traditional carburizing and quenching process, the gears usually need to be manually removed from the quenching medium, which is not only time-consuming but may also cause injury to the operator. In addition, the traditional cooling method usually relies on natural cooling, which has low cooling efficiency. Summary of the Invention

[0006] In view of the above problems in the prior art, the present invention is proposed.

[0007] Therefore, the purpose of the present invention is to provide a tool and method for carburizing and quenching locomotive gears. The problem to be solved is: in the traditional carburizing and quenching process, the gears usually need to be manually removed from the quenching medium, which is not only time-consuming but also easily causes injury to the operator. In addition, the traditional cooling method usually relies on natural cooling, which has low cooling efficiency and easily leads to uneven stress distribution inside the gears, affecting the quenching quality.

[0008] To achieve the above objectives, the present invention provides the following technical solutions: a tool for carburizing and quenching locomotive gears, comprising a carburizing chamber for carburizing the gears, a quenching chamber for quenching the gears disposed below the carburizing chamber, a clamping device for limiting gear movement and driven by a material removal device disposed in the quenching chamber, and a cooling device for cooling the gears disposed above the carburizing chamber; The material taking device includes a first push rod fixedly mounted on the quenching chamber, a push plate is fixedly mounted on one end of the piston rod of the first push rod extending into the quenching chamber, a push ring seat is fixedly mounted on the push plate, a main rotating shaft and a secondary rotating shaft driven by a motor are sleeved in the push ring seat, one end of the main rotating shaft protrudes from the secondary rotating shaft and a first slider is fixedly mounted above the secondary rotating shaft; The clamping device includes a gear plate located above the main rotating shaft, a rotating shaft seat is fixedly installed at the bottom of the gear plate, and one end of the main rotating shaft extending outside the auxiliary rotating shaft is fixedly installed in the rotating shaft seat, and the gear plate is provided with adjustment grooves distributed in a circular array around the rotating shaft seat.

[0009] As a preferred solution of the tooling for carburizing and quenching of locomotive gears described in the present invention, wherein: the main rotating shaft is located at one end of the secondary rotating shaft and is fixedly installed with a second slider distributed parallel to the first slider; the main rotating shaft is slidably connected to the secondary rotating shaft through the first slider and the second slider, and the secondary rotating shaft is clearance-matched with the pusher ring seat.

[0010] As a preferred solution of the tooling for carburizing and quenching of locomotive gears described in the present invention, the auxiliary shaft is provided with a first slide groove for limiting the movement of the first slider, the interior of the auxiliary shaft is provided with a second slide groove for limiting the movement of the second slider, the motor is fixedly installed at the bottom of the quenching chamber, and the output shaft of the motor is transmission-connected to one end of the auxiliary shaft protruding from the quenching chamber.

[0011] As a preferred solution of the tooling for carburizing and quenching locomotive gears described in the present invention, a clamping block adapted to the adjustment groove is slidably connected in the gear plate, one end of the clamping block extending outside the gear plate is threadedly connected to an adjusting screw, and the adjusting screw passes through one end of the clamping block and extends into the rotating shaft seat.

[0012] As a preferred solution of the tooling for carburizing and quenching locomotive gears described in the present invention, a gear column is fixedly installed on the end of the gear plate away from the rotating shaft seat, and the clamping blocks are distributed in a ring array around the gear column, and a positioning seat is fixedly installed on the end of the gear column away from the gear plate.

[0013] As a preferred solution of the tooling for carburizing and quenching locomotive gears of the present invention, the carburizing chamber is provided with carburizing nozzles distributed in a ring array, and the quenching chamber is also provided with injection ports and discharge ports for filling and discharging quenching oil.

[0014] As a preferred solution of the tooling for carburizing and quenching of locomotive gears described in the present invention, the cooling device includes a cooling chamber located above the carburizing chamber, and the cooling chamber is also provided with cooling nozzles distributed in a circular array. One end of the cooling nozzle extends into the carburizing chamber, and the cooling chamber is also provided with a positioning hole corresponding to the positioning seat.

[0015] As a preferred solution of the tooling for carburizing and quenching locomotive gears described in the present invention, a side ear is fixedly installed outside the cooling chamber, a second push rod distributed parallel to the first push rod is fixedly installed outside the quenching chamber, and the piston rod of the second push rod is fixedly connected to the side ear.

[0016] To achieve the above-mentioned object, the present invention further provides a method for carburizing and quenching a locomotive gear, wherein the locomotive gear carburizing and quenching tool is used to perform carburizing and quenching, and the method comprises the following steps: Step 1: Place the locomotive gear on the gear plate, ensure the gear is in the center through the gear column, and use the adjusting screw to drive the clamp to fix the gear; Step 2: The gear plate and the gear are moved to the carburizing chamber by the first push rod, and the carburizing nozzle starts working to evenly spray the carburizing medium; Step 3: After carburizing is completed, the first push rod pushes the push plate and the push ring seat to move the gear from the carburizing chamber to the quenching chamber; Step 4: In the quenching chamber, quenching oil is added through the filling port for rapid cooling. After completion, the quenching oil is drained through the drain port. Subsequently, the first push rod removes the gear from the quenching oil, and the motor drives the auxiliary shaft to dry the residual oil on the gear; Step 5: The second push rod pushes the cooling chamber to move above the gear, and the cooling nozzle sprays coolant for rapid cooling. The positioning hole and the positioning seat cooperate to ensure the accurate position of the gear.

[0017] In summary, the present invention has at least one of the following beneficial effects: 1. The present invention realizes the automatic transfer of gears between the carburizing chamber and the quenching chamber through the coordinated action of the first push rod, the push plate, the push ring seat, the main rotating shaft and the auxiliary rotating shaft, thereby avoiding damage to the gears that may be caused during the manual transfer process.

[0018] 2. The present invention realizes rapid and uniform cooling of the gear during the cooling process through the design of the second push rod, cooling chamber, cooling nozzle, positioning hole and positioning seat, effectively reduces the influence of thermal stress on the gear, improves the quenching quality of the gear, and ensures the accuracy and reliability of the cooling process.

[0019] 3. The present invention realizes stable clamping and center positioning of locomotive gears of different specifications by providing a gear plate, a gear column, an adjusting screw and a clamping block, ensuring that the gears will not shift during the carburizing process, thereby improving the uniformity and quality stability of carburizing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a cutaway perspective view of the present invention; Figure 3 This is a cross-sectional structural diagram of the carburizing chamber and the cooling chamber of the present invention; Figure 4 It is a structural diagram of the material taking device and the clamping device of the present invention; Figure 5 This is a cross-sectional structural diagram of the main rotating shaft and the auxiliary rotating shaft of the present invention; Figure 6 It is a three-dimensional structural diagram of the clamping device of the present invention; Figure 7 It is a top view of the clamping device of the present invention.

[0022] Description of reference numerals: 1. Carburizing chamber; 101. Carburizing nozzle; 2. Quenching chamber; 3. Removing device; 301. First push rod; 3011. Push plate; 3012. Push ring seat; 302. Main rotating shaft; 3021. First slider; 3022. Second slider; 303. Secondary rotating shaft; 3031. First slide; 3032. Second slide; 304. Motor; 4. Clamping device; 401. Gear plate; 4011. Rotating shaft seat; 4012. Adjusting groove; 402. Clamping block; 4021. Adjusting screw; 403. Gear column; 4031. Positioning seat; 5. Cooling device; 501. Cooling chamber; 5011. Cooling nozzle; 5012. Positioning hole; 502. Side ear; 503. Second push rod. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] The embodiment of the present invention discloses a tool and method for carburizing and quenching locomotive gears.

[0025] Example 1 Reference Figures 1 to 7 , which is the first embodiment of the present invention, provides a tool and method for carburizing and quenching locomotive gears. The tool includes a carburizing chamber 1 for carburizing the gears. A quenching chamber 2 for quenching the gears is provided below the carburizing chamber 1. A clamping device 4 for limiting the movement of the gears and driven by a material taking device 3 is provided in the quenching chamber 2. A cooling device 5 for cooling the gears is provided above the carburizing chamber 1. The material taking device 3 includes a first push rod 301 fixedly mounted on the quenching chamber 2. A push plate 3011 is fixedly mounted on one end of the piston rod of the first push rod 301 extending into the quenching chamber 2. A push plate 3011 is fixedly mounted on the push plate 3011. There is a push ring seat 3012, in which a main rotating shaft 302 and a secondary rotating shaft 303 driven by a motor 304 are sleeved. One end of the main rotating shaft 302 protrudes from the secondary rotating shaft 303 and a first slider 3021 is fixedly installed above the secondary rotating shaft 303. The clamping device 4 includes a gear plate 401 located above the main rotating shaft 302, a rotating shaft seat 4011 is fixedly installed at the bottom of the gear plate 401, and one end of the main rotating shaft 302 extending outside the secondary rotating shaft 303 is fixedly installed in the rotating shaft seat 4011. The gear plate 401 is provided with adjustment grooves 4012 distributed in a ring array around the rotating shaft seat 4011. The first push rod 301 can drive the push plate 3011 and the push ring seat 3012 by extending the piston rod, and move the gear from the carburizing chamber 1 to the quenching chamber 2 or take it out from the carburizing chamber 1. The push plate 3011 can drive the push ring seat 3012 to move synchronously with the extension of the piston rod. The main shaft 302 can move axially along the secondary shaft 303 through the first slider 3021, and at the same time maintain synchronous movement with the push ring seat 3012 under the restriction of the first slider 3021, completing the transfer of the locomotive gear on the gear plate 401 of the shaft seat 4011 connected to the main shaft 302.

[0026] In a specific embodiment, a second slider 3022 parallel to the first slider 3021 is fixedly installed at one end of the main rotating shaft 302 located in the secondary rotating shaft 303. The main rotating shaft 302 is slidably connected to the secondary rotating shaft 303 through the first slider 3021 and the second slider 3022, and the secondary rotating shaft 303 is clearance-matched with the push ring seat 3012. When the main rotating shaft 302 protrudes from the secondary rotating shaft 303, it can be prevented from detaching from the secondary rotating shaft 303 by the second slider 3022.

[0027] Preferably, a first slide groove 3031 for limiting the movement of the first slider 3021 is provided on the secondary shaft 303, and a second slide groove 3032 for limiting the movement of the second slider 3022 is provided inside the secondary shaft 303. The motor 304 is fixedly installed at the bottom of the quenching chamber 2, and the output shaft of the motor 304 is transmission-connected to the end of the secondary shaft 303 protruding from the quenching chamber 2. The main shaft 302 can rotate synchronously with the secondary shaft 303 driven by the motor 304 in the pusher ring seat 3012, thereby driving the gear plate 401 to rotate, thereby drying the residual quenching oil on the locomotive gear, and through the movement of the first slider 3021 and the second slider 3022 in the first slide groove 3031 and the second slide groove 3032, the stability of the main shaft 302 during rotation and movement is further ensured.

[0028] Furthermore, a clamping block 402 that is adapted to the adjustment groove 4012 is slidably connected to the gear plate 401, and one end of the clamping block 402 extending to the outside of the gear plate 401 is threadedly connected to an adjusting screw 4021, and the adjusting screw 4021 passes through one end of the clamping block 402 and extends to the rotating shaft seat 4011. The clamping block 402 can slide in the adjustment groove 4012 through the adjusting screw 4021 to clamp the gear and ensure the stability of the gear during the quenching process.

[0029] Specifically, a gear column 403 is fixedly installed on the end of the gear plate 401 away from the rotating shaft seat 4011, and the clamping blocks 402 are distributed in a ring array around the gear column 403. A positioning seat 4031 is fixedly installed on the end of the gear column 403 away from the gear plate 401. The gear column 403 is used to support the gear, ensure the stability of the gear during rotation, and ensure that the locomotive gear is always at the center of the gear plate 401.

[0030] Furthermore, the carburizing chamber 1 is provided with carburizing nozzles 101 distributed in a circular array, and the quenching chamber 2 is also provided with injection ports and drain ports for filling and discharging quenching oil. The carburizing chamber 1 is used to carburize the gears and can evenly spray the carburizing medium onto the gear surface to ensure that the gear surface reaches the required carbon content. The quenching chamber 2 completes the filling and discharge of the quenching oil through the injection port and drain port to ensure smooth quenching of the gears.

[0031] Furthermore, the cooling device 5 includes a cooling chamber 501 located above the carburizing chamber 1. The cooling chamber 501 is also provided with cooling nozzles 5011 distributed in a ring array. One end of the cooling nozzle 5011 extends into the carburizing chamber 1. The cooling chamber 501 is also provided with a positioning hole 5012 corresponding to the positioning seat 4031. The positioning hole 5012 is used to cooperate with the positioning seat 4031 to ensure the precise position of the gear during the cooling process, and is used to spray coolant onto the gear surface through the cooling nozzle 5011 to ensure uniform cooling of the gear during the cooling process.

[0032] Specifically, a side ear portion 502 is fixedly installed on the outside of the cooling chamber 501, and a second push rod 503 distributed parallel to the first push rod 301 is fixedly installed on the outside of the quenching chamber 2. The piston rod of the second push rod 503 is fixedly connected to the side ear portion 502. The second push rod 503 can push the cooling chamber 501 connected to the side ear portion 502 by extending the piston rod to complete the opening and closing with the carburizing chamber 1 under the restriction of the sliding rod, so that it can be quickly moved to the top of the locomotive gear located on the gear plate 401 for cooling treatment when needed.

[0033] During the carburizing and quenching process of a locomotive gear, the locomotive gear to be processed is placed on the gear plate 401, and the gear column 403 is used to ensure that the locomotive gear is always in the center of the gear plate 401. By rotating the adjusting screw 4021, the corresponding clamping block 402 slides in the adjusting groove 4012, and the gear is fixed on the gear plate 401, ensuring the stability of the gear during the carburizing process to meet the clamping requirements of locomotive gears with different gears. The locomotive gear connected to the gear plate 401 via the shaft seat 4011 and the main shaft 302 is transferred to the carburizing chamber 1 by the piston rod of the first push rod 301. The carburizing nozzle 101 in the carburizing chamber 1 starts working, evenly spraying carburizing medium onto the gear surface to achieve the required carbon content on the gear surface. The carburizing process is carried out in the carburizing chamber 1 to ensure uniform carburization of the gear at high temperature. As the carburizing treatment is completed, the piston rod of the first push rod 301 drives the push plate 3011 and the push ring seat 3012 to move axially along the secondary rotating shaft 303. The main rotating shaft 302 is restricted by the first slider 3021 and descends along with the push ring seat 3012 due to gravity, so that the gear is moved from the carburizing chamber 1 to the quenching chamber 2. After the gear enters the quenching chamber 2, quenching oil is added to the quenching chamber 2 through the liquid filling port to quickly cool the gear. After quenching is completed, the quenching oil is discharged through the liquid discharge port. As the piston rod of the first push rod 301 extends, the main rotating shaft 302 is pushed out from the secondary rotating shaft 303. The second slider 3022 moves in the second slide groove 3032 to prevent it from disengaging. Without manual operation, the locomotive gear can be removed from the quenching oil. At the same time, the motor 304 drives the secondary rotating shaft 303, which in turn drives the main rotating shaft 302 and the gear plate 401 to rotate, thereby drying the residual quenching oil on the gear. When rapid cooling is required, the piston rod of the second push rod 503 drives the side ear 502, so that the cooling chamber 501 is restricted by the sliding rod and moves closer to the carburizing chamber 1 and moves above the gear. The cooling nozzle 5011 in the cooling chamber 501 sprays coolant onto the gear surface, quickly lowering the temperature of the gear and reducing the impact of thermal stress on the gear. The positioning hole 5012 cooperates with the positioning seat 4031 to ensure the precise position of the gear during the cooling process.

[0034] To achieve the above-mentioned object, the present invention further provides a method for carburizing and quenching a locomotive gear, wherein the locomotive gear carburizing and quenching tool is used to perform carburizing and quenching, and the method comprises the following steps: Step 1: Place the locomotive gear on the gear plate 401, ensure the gear is centered by the gear column 403, and use the adjusting screw 4021 to drive the clamping block 402 to fix the gear; Step 2: The gear plate 401 and the gear are moved to the carburizing chamber 1 by the first push rod 301, and the carburizing nozzle 101 starts working to evenly spray the carburizing medium; Step 3: After carburizing is completed, the first push rod 301 pushes the push plate 3011 and the push ring seat 3012 to move the gear from the carburizing chamber 1 to the quenching chamber 2; Step 4: In the quenching chamber 2, quenching oil is added through the filling port for rapid cooling. After completion, the quenching oil is drained through the drain port. Subsequently, the first push rod 301 removes the gear from the quenching oil, and the motor 304 drives the auxiliary shaft 303 to dry the residual oil on the gear. Step 5: The second push rod 503 pushes the cooling chamber 501 to move above the gear, and the cooling nozzle 5011 sprays coolant for rapid cooling. The positioning hole 5012 cooperates with the positioning seat 4031 to ensure the accurate position of the gear.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A tool for carburizing and quenching locomotive gears, characterized by: It comprises a carburizing chamber (1) for carburizing a gear, a quenching chamber (2) for quenching the gear being provided below the carburizing chamber (1), a clamping device (4) for limiting the movement of the gear and driven by a material taking device (3) being provided in the quenching chamber (2), and a cooling device (5) for cooling the gear being provided above the carburizing chamber (1); The material taking device (3) comprises a first push rod (301) fixedly mounted on the quenching chamber (2); a push plate (3011) is fixedly mounted on one end of the piston rod of the first push rod (301) extending into the quenching chamber (2); a push ring seat (3012) is fixedly mounted on the push plate (3011); a main rotating shaft (302) and a secondary rotating shaft (303) driven by a motor (304) are sleeved in the push ring seat (3012); one end of the main rotating shaft (302) protrudes from the secondary rotating shaft (303) and a first sliding block (3021) is fixedly mounted above the secondary rotating shaft (303); The clamping device (4) comprises a gear plate (401) located above the main rotating shaft (302), a rotating shaft seat (4011) being fixedly mounted on the bottom of the gear plate (401), and one end of the main rotating shaft (302) extending outside the auxiliary rotating shaft (303) being fixedly mounted in the rotating shaft seat (4011), and the gear plate (401) is provided with adjustment slots (4012) distributed in a ring array around the rotating shaft seat (4011).

2. The tool for carburizing and quenching locomotive gears according to claim 1, characterized in that: A second slider (3022) is fixedly mounted on one end of the main rotating shaft (302) located in the secondary rotating shaft (303) and is distributed parallel to the first slider (3021). The main rotating shaft (302) is slidably connected to the secondary rotating shaft (303) via the first slider (3021) and the second slider (3022), and the secondary rotating shaft (303) is clearance-matched with the push ring seat (3012).

3. The tool for carburizing and quenching locomotive gears according to claim 2, characterized in that: The auxiliary rotating shaft (303) is provided with a first sliding groove (3031) for limiting the movement of the first slider (3021), and the interior of the auxiliary rotating shaft (303) is provided with a second sliding groove (3032) for limiting the movement of the second slider (3022). The motor (304) is fixedly mounted on the bottom of the quenching chamber (2), and the output shaft of the motor (304) is drivingly connected to one end of the auxiliary rotating shaft (303) protruding from the quenching chamber (2).

4. The tool for carburizing and quenching locomotive gears according to claim 1, characterized in that: A clamping block (402) adapted to the adjustment slot (4012) is slidably connected to the gear plate (401), and one end of the clamping block (402) extending outside the gear plate (401) is threadedly connected to an adjustment screw (4021), and the adjustment screw (4021) passes through one end of the clamping block (402) and extends into the rotating shaft seat (4011).

5. The tool for carburizing and quenching locomotive gears according to claim 4, characterized in that: A gear column (403) is fixedly mounted on one end of the gear plate (401) away from the rotating shaft seat (4011), and the clamping blocks (402) are distributed in a ring array around the gear column (403). A positioning seat (4031) is fixedly mounted on one end of the gear column (403) away from the gear plate (401).

6. The tool for carburizing and quenching locomotive gears according to claim 5, characterized in that: The carburizing chamber (1) is provided with carburizing nozzles (101) distributed in a ring array, and the quenching chamber (2) is also provided with injection ports and discharge ports for filling and discharging quenching oil.

7. The tool for carburizing and quenching locomotive gears according to claim 6, characterized in that: The cooling device (5) comprises a cooling chamber (501) located above the carburizing chamber (1), the cooling chamber (501) also being provided with cooling nozzles (5011) distributed in a ring array, one end of the cooling nozzles (5011) extending into the carburizing chamber (1), and the cooling chamber (501) also being provided with positioning holes (5012) corresponding to the positioning seats (4031).

8. The tool for carburizing and quenching locomotive gears according to claim 7, characterized in that: A side ear portion (502) is fixedly installed outside the cooling chamber (501), and a second push rod (503) distributed parallel to the first push rod (301) is fixedly installed outside the quenching chamber (2), and a piston rod of the second push rod (503) is fixedly connected to the side ear portion (502).

9. A method for carburizing and quenching locomotive gears, characterized in that: Carburizing and quenching are performed using the tool for carburizing and quenching locomotive gears as claimed in claim 8, the method comprising the following steps: Step 1: Place the locomotive gear on the gear plate (401), ensure that the gear is located in the center through the gear column (403), and use the adjusting screw (4021) to drive the clamping block (402) to fix the gear; Step 2: The gear plate (401) and the gear are moved to the carburizing chamber (1) by the first push rod (301), and the carburizing nozzle (101) starts working to evenly spray the carburizing medium; Step 3: After carburizing is completed, the first push rod (301) pushes the push plate (3011) and the push ring seat (3012) to move the gear from the carburizing chamber (1) to the quenching chamber (2); Step 4: In the quenching chamber (2), quenching oil is added through the liquid filling port for rapid cooling, and the quenching oil is discharged through the liquid discharge port after completion; then, the first push rod (301) removes the gear from the quenching oil, and the motor (304) drives the auxiliary shaft (303) to dry the residual oil on the gear; Step 5: The second push rod (503) pushes the cooling chamber (501) to move above the gear, and the cooling nozzle (5011) sprays coolant for rapid cooling. The positioning hole (5012) cooperates with the positioning seat (4031) to ensure the accurate position of the gear.

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