Band saw blade tooth tip hardness controllable quenching device

Abstract

The utility model relates to the band saw blade field discloses a band saw blade tooth tip hardness controllable quenching device, including quenching box, still including the support plate of setting in the quenching box, and the support plate divides into two parts of upper and lower in the quenching box, the band saw blade quenching disc structure of setting in the quenching box, and the band saw blade quenching disc structure includes quenching cooling drive structure and quenching disc, the tooth tip heating structure of setting in the upper half portion of being separated by the support plate in the quenching box, the spray unit of setting in the upper half portion of being separated by the support plate in the quenching box, the baffle subassembly of setting in the upper half portion of being separated by the support plate in the quenching box, and the baffle subassembly is between the spray unit and tooth tip heating structure, through the targeted heating design, the partition isolation structure and the automatic linkage control, effectively avoid the overheat of saw blade non -critical area, significantly improve tooth tip hardness uniformity.

Description

Technical Field

[0001] This utility model relates to the field of band saw blades, specifically a band saw blade tooth tip hardness controllable quenching device. Background Technology

[0002] In the field of metal cutting, band saw blades are the core cutting tools. The hardness of their tooth tips directly determines the cutting efficiency, service life and processing accuracy. The tooth tips must have sufficient hardness to cope with high-strength metal cutting, while avoiding brittle tooth breakage caused by excessive hardness. Therefore, controllable tooth tip hardness is the core requirement of the band saw blade quenching process.

[0003] Currently, in terms of heating for band saw blade tooth tip quenching devices, existing devices mostly adopt overall heating or simple local heating, lacking a tooth tip targeted heating design. Overall heating easily leads to overheating of non-critical areas of the saw blade, increasing the risk of deformation and requiring additional annealing heat treatment, which is cumbersome and energy-intensive. At the same time, the heating structure is mostly fixed and cannot be adapted to saw blades with different tooth pitches and tooth heights, resulting in poor adaptability. To address this, we propose a band saw blade tooth tip hardness controllable quenching device. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a quenching device with controllable hardness of band saw blade teeth, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a quenching device for controllable hardness of band saw blade teeth, comprising a quenching chamber, and further comprising: The support plate is installed inside the quenching box. Three sides of the support plate are fixedly connected to the three side walls inside the quenching box. The support plate divides the inside of the quenching box into upper and lower parts. The band saw blade quenching disc structure is disposed in the quenching box, and the band saw blade quenching disc structure includes a quenching and cooling drive structure and a quenching disc. The quenching cooling drive structure is located in the lower half of the quenching box, which is separated by the support plate, and the quenching plate is located in the upper half of the quenching box, which is separated by the support plate. The tooth tip heating structure is located in the upper half of the quenching box, which is separated by the support plate. The tooth tip heating structure is located on the side of the quenching box away from the door and is above the quenching plate. The spray unit is located in the upper half of the quenching chamber, which is separated by the support plate. The spray unit is located on the side of the quenching chamber near the door. A partition assembly is disposed in the upper half of the quenching chamber, which is separated by the support plate, between the spray unit and the tooth tip heating structure.

[0006] Preferably, the quenching cooling drive structure includes a motor, a lead screw, a slider, and limiting blocks. The motor's output shaft mounting surface is fixedly connected to the outer side of the quenching chamber. The motor's output shaft passes through the quenching chamber and is rotatably connected to it. The motor is located between the support plate and the bottom surface of the quenching chamber. The motor's output shaft faces the door end of the quenching chamber. One end of the motor's output shaft is connected to the lead screw via a coupling. The other end of the lead screw is connected to a bearing seat. The inner ring of the bearing seat is fixedly connected to the lead screw. The side of the bearing seat is fixedly connected to the inner wall of the quenching chamber. One side of the slider has a threaded hole. The slider is sleeved on the lead screw. The side of the slider opposite to the support plate is fixedly connected to multiple limiting blocks that are equidistantly distributed along a straight line.

[0007] Preferably, the side of the support plate opposite to the limiting block has multiple strip holes that are equidistantly distributed along a straight line. The limiting block is slidably connected to the strip holes, and the end of the limiting block away from the slider is fixedly connected to the side of the quenching plate away from the opening.

[0008] Preferably, the quenching disc has multiple sets of clamping plates that are equidistantly distributed along a straight line on the opposite side of the opening. Each set of clamping plates consists of two parallel clamping plates.

[0009] Preferably, the top surface of the quenching box is provided with a second insertion hole, which is located on the side of the quenching box away from the box door.

[0010] Preferably, the tooth tip heating structure includes a mounting plate, a resistance heating module, a lifting tube, a power control module, and a second hydraulic cylinder. Multiple sets of resistance heating modules are mounted on one side of the mounting plate, with each set corresponding to a set of clamping plates. A lifting tube is fixedly connected to the side of the mounting plate opposite to the resistance heating modules. A power control module is installed inside the lifting tube and is electrically connected to the resistance heating modules. The mounting plate and resistance heating modules are located between the support plate and the top surface of the quenching chamber. The lifting tube is slidably connected to the second insertion hole. A second hydraulic cylinder is connected to the top surface of the quenching chamber on one side of the lifting tube. The bottom surface of the second hydraulic cylinder is fixedly connected to the quenching chamber. The lug at one end of the piston rod of the second hydraulic cylinder is fixedly connected to one end of the lifting tube outside the quenching chamber.

[0011] Preferably, the top surface of the quenching chamber has a through-hole, which is located between one end of the chamber door and the lifting pipe.

[0012] Preferably, the partition assembly includes a partition and a hydraulic cylinder. The partition is inserted into the insertion hole. The top surface of the quenching box is connected to the hydraulic cylinder on one side of the partition. The bottom surface of the cylinder body of the hydraulic cylinder is fixedly connected to the quenching box. The lug at one end of the piston rod of the hydraulic cylinder is fixedly connected to one end of the partition outside the quenching box.

[0013] Preferably, the spraying unit is snapped into the quenching chamber, and the spraying unit is located on the side of the partition away from the lifting pipe. Multiple drainage holes are provided through the clamp on the side of the clamp opposite to the door of the quenching chamber.

[0014] Compared with the prior art, this utility model provides a quenching device with controllable hardness of band saw blade teeth, which has the following beneficial effects: This band saw blade tooth tip hardness controllable quenching device effectively avoids excessive heating in non-critical areas of the saw blade through targeted heating design, partitioned isolation structure and automated linkage control, significantly improves the uniformity of tooth tip hardness, simplifies the quenching process, reduces energy consumption, and can flexibly adapt to different specifications of saw blades, greatly improving quenching efficiency and product quality stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is an exploded view of the structure of this utility model.

[0017] Figure 3 This is a cross-sectional schematic diagram of the tooth tip heating structure of this utility model.

[0018] Figure 4 This is a cross-sectional schematic diagram of the quenching and cooling drive structure of this utility model.

[0019] In the diagram: 1. Quenching chamber; 2. Motor; 3. Lifting pipe; 4. Hydraulic cylinder one; 5. Hydraulic cylinder two; 6. Partition plate; 7. Support plate; 8. Strip hole; 9. Spray unit; 10. Insertion hole one; 11. Insertion hole two; 12. Lead screw; 13. Slider; 14. Limit block; 15. Quenching plate; 16. Clamping plate; 17. Drain hole; 18. Mounting plate; 19. Resistance heating module; 20. Power control module. 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 see Figure 1-4 A quenching device for controllable hardness of band saw blade teeth, comprising a quenching chamber 1, and further comprising: The support plate 7 is installed inside the quenching box 1. The three sides of the support plate 7 are fixedly connected to the three side walls inside the quenching box 1. The support plate 7 divides the inside of the quenching box 1 into upper and lower parts. The band saw blade quenching disc structure is set inside the quenching box 1. The band saw blade quenching disc structure includes a quenching and cooling drive structure and a quenching disc 15. The quenching cooling drive structure is located in the lower half of the quenching box 1, which is separated by the support plate 7, and the quenching plate 15 is located in the upper half of the quenching box 1, which is separated by the support plate 7. The tooth tip heating structure is set in the upper half of the quenching box 1, which is separated by the support plate 7. The tooth tip heating structure is located on the side of the quenching box 1 away from the box door, and is above the quenching plate 15. The spray unit 9 is located in the upper half of the quenching chamber 1, which is separated by the support plate 7. The spray unit 9 is located on the side of the quenching chamber 1 near the door. The partition assembly is located in the upper half of the quenching chamber 1, which is separated by the support plate 7. The partition assembly is located between the spray unit 9 and the tooth tip heating structure.

[0022] Furthermore, the quenching cooling drive structure includes a motor 2, a lead screw 12, a slider 13, and limiting blocks 14. The output shaft mounting surface of the motor 2 is fixedly connected to the outer side of the quenching chamber 1. The output shaft of the motor 2 passes through the quenching chamber 1 and is rotatably connected to it. The motor 2 is located between the support plate 7 and the bottom surface of the quenching chamber 1. The output shaft of the motor 2 faces the door end of the quenching chamber 1. One end of the output shaft of the motor 2 is connected to the lead screw 12 through a coupling. The other end of the lead screw 12 is connected to a bearing seat. The inner ring of the bearing seat is fixedly connected to the lead screw 12. The side of the bearing seat is fixedly connected to the inner wall of the quenching chamber 1. One side of the slider 13 has a threaded hole. The slider 13 is sleeved on the lead screw 12. The side of the slider 13 opposite to the support plate 7 is fixedly connected to multiple limiting blocks 14 distributed equidistantly along a straight line. The motor 2 is used to drive the lead screw 12 to rotate, and the slider 13 slides on the lead screw 12. The limiting blocks 14 are used to connect the quenching plate 15.

[0023] Furthermore, multiple strip holes 8 are equidistantly distributed along a straight line on the side of the support plate 7 opposite to the limiting block 14. The limiting block 14 is slidably connected to the strip holes 8. The end of the limiting block 14 away from the slider 13 is fixedly connected to the side of the quenching plate 15 away from the opening. The limiting block 14 is slidably connected to the strip holes 8 to prevent the slider 13 from rotating with the lead screw 12. When the lead screw 12 rotates, the slider 13 slides on the lead screw 12, controlling the quenching plate 15 to move horizontally within the quenching box 1.

[0024] Furthermore, a number of clamping plates 16 are fixedly connected to the opposite side of the opening of the quenching plate 15, which are distributed equidistantly along a straight line. Each clamping plate 16 consists of two parallel clamping plates 16. The clamping plates 16 are used to clamp the band saw blade, with the tooth tips of the band saw blade facing upwards on the outside of the clamping plates 16.

[0025] Furthermore, a second insertion hole 11 is provided through the top surface of the quenching box 1. The second insertion hole 11 is located on the side of the quenching box 1 away from the box door, and the second insertion hole 11 is used to install the tooth tip heating structure.

[0026] Furthermore, the tooth tip heating structure includes a mounting plate 18, a resistance heating module 19, a lifting tube 3, a power control module 20, and a hydraulic cylinder 5. Multiple sets of resistance heating modules 19 are mounted on one side of the mounting plate 18, with each set of resistance heating modules 19 corresponding to a set of clamping plates 16. The lifting tube 3 is fixedly connected to the side of the mounting plate 18 facing away from the resistance heating modules 19. The power control module 20 is installed inside the lifting tube 3 and is electrically connected to the resistance heating modules 19. The mounting plate 18 and the resistance heating modules 19 are located between the support plate 7 and the top surface of the quenching chamber 1. The lifting tube 3 is slidably connected to the insertion hole 11. The top surface of the quenching chamber 1 is located on the lifting tube. Hydraulic cylinder 25 is connected to one side of 3. The bottom surface of the cylinder body of hydraulic cylinder 25 is fixedly connected to the quenching box 1. The lug at one end of the piston rod of hydraulic cylinder 25 is fixedly connected to the end of the lifting tube 3 outside the quenching box 1. The mounting plate 18 is used to install the resistance heating module 19. The resistance heating module 19 and the clamping plate 16 are located around the teeth of the band saw blade to heat the teeth of the band saw blade. The power control module 20 is used to control the resistance heating module 19. The lifting tube 3 is used to install the power control module 20. Hydraulic cylinder 25 starts to control the lifting of the lifting tube 3. The piston rod of hydraulic cylinder 25 extends to control the lifting tube 3 to rise, thereby controlling the distance between the resistance heating module 19 and the clamping plate 16.

[0027] Furthermore, a through-hole 10 is provided on the top surface of the quenching box 1. The through-hole 10 is located between one end of the box door of the quenching box 1 and the lifting pipe 3. The through-hole 10 is used to install the partition assembly.

[0028] Furthermore, the partition assembly includes a partition 6 and a hydraulic cylinder 4. The partition 6 is inserted into the insertion hole 10. The top surface of the quenching chamber 1 is connected to the hydraulic cylinder 4 on one side of the partition 6. The bottom surface of the cylinder body of the hydraulic cylinder 4 is fixedly connected to the quenching chamber 1. The lug at one end of the piston rod of the hydraulic cylinder 4 is fixedly connected to the end of the partition 6 outside the quenching chamber 1. The partition 6 is used to divide the quenching chamber 1 into two parts: a heating zone and a cooling zone, and to separate the resistance heating module 19 and the spray unit 9. When the quenching plate 15 moves horizontally inside the quenching chamber 1, the hydraulic cylinder 4 is activated to control the lifting and lowering of the partition 6.

[0029] Furthermore, the spray unit 9 is snapped into the quenching box 1. The spray unit 9 is located on the side of the partition 6 away from the lifting pipe 3, and the clamping plate 16 is on the side opposite to the door of the quenching box 1. Multiple drain holes 17 are provided through the spray unit 9 to cool the tips of the heated band saw blades. The drain holes 17 are used to drain the liquid sprayed into the quenching plate 15.

[0030] Structural Description: Quenching box 1: A rectangular box-shaped structure that provides a closed working space for the device, integrates various functional components and isolates external interference; Motor 2: Cylindrical housing structure, serving as a power source, receives PLC commands to drive the lead screw 12 to rotate, providing power for the translation of the quenching plate 15; Lifting pipe 3: A hollow tubular structure used to install the power control module 20, and simultaneously lifted and lowered along the insertion hole 11 under the drive of hydraulic cylinder 2 5 to adjust the height of the resistance heating module 19; Hydraulic cylinder 4: Cylindrical cylinder body with piston rod structure, driven by PLC to move the partition 6 up and down along the insertion hole 10 to realize the isolation or connection between the heating zone and the cooling zone; Hydraulic cylinder 25: Cylindrical cylinder body with piston rod structure, receives PLC instructions to drive the lifting tube 3 to rise and fall, thereby adjusting the distance between the resistance heating module 19 and the tip of the band saw teeth; Partition 6: A rectangular plate structure that separates the heating zone from the cooling zone when lowered by hydraulic cylinder 4, and allows the quenching plate 15 to pass between the two zones when raised; Support plate 7: Rectangular plate structure, fixed to the inner wall of the quenching box on three sides, dividing the box into upper and lower parts. The upper part supports the quenching plate 15, and the lower part is equipped with the quenching cooling drive structure. Strip hole 8: A long strip-shaped through hole on the support plate 7, through which the limiting block 14 passes and slides, limiting the slider 13 to rotate with the lead screw 12, and at the same time cooperating with the displacement sensor to provide position feedback; Spray unit 9: A tubular structure with multiple nozzles, which is activated by receiving a PLC command to spray cooling medium onto the heated tooth tips, while monitoring the medium flow rate through a flow sensor. Socket 10: A rectangular through hole on the top surface of the quenching box, providing a lifting channel for the partition 6 and ensuring the vertical movement of the partition 6; Insertion Hole 2 11: A circular through hole on the top surface of the quenching box, providing a lifting channel for the lifting pipe 3 to ensure stable movement of the lifting pipe 3; Lead screw 12: A threaded cylindrical rod structure that rotates under the drive of motor 2, converting rotational motion into linear motion of slider 13; Slider 13: A block-shaped structure with a threaded hole that matches the lead screw. It is fitted onto the lead screw 12 and slides linearly as the lead screw rotates, thereby moving the limit block 14. Limiting block 14: a long strip-shaped block structure, one end of which is connected to the slider 13 and the other end is connected to the quenching plate 15, transmitting the linear motion of the slider and driving the quenching plate 15 to translate. Quenching plate 15: A grooved plate structure used to support the clamping plate 16 and band saw blade, collect cooling waste liquid and discharge it through the drain hole 17; Clamping plate 16: a long strip plate structure, with two sets arranged in parallel, used to clamp and fix the band saw blade, ensuring that the tooth tips are exposed upwards, while the drain hole 17 on it is used to discharge waste liquid; Drain hole 17: A circular through hole on the clamping plate 16, used to drain the cooling waste liquid in the quenching plate 15, and to monitor the drainage status in conjunction with the liquid level sensor; Mounting plate 18: A rectangular plate structure used to fix and install multiple sets of resistance heating modules 19, so as to realize the corresponding arrangement of heating modules and clamping plate 16; Resistance heating module 19: Block heating element, corresponding one-to-one with clamping plate 16, powered by power control module 20, and achieves targeted heating around the tip of band saw teeth; Power control module 20: Box-shaped structure, installed inside the lifting tube 3, electrically connected to the resistance heating module 19, and controlled by PLC to adjust the heating power and heating time.

[0031] Working principle: During the clamping stage, the operator inserts the band saw blade into the clamping plate 16 of the quenching disc 15, with the tooth tips facing upwards and exposed. The PLC controller receives the signal from the pressure sensor on the clamping plate 16 and starts the equipment after confirming that the saw blade is clamped in place. In the quenching and cooling drive structure, the motor 2 starts after receiving the PLC command, driving the lead screw 12 to rotate. The slider 13 slides on the lead screw 12, and at the same time, the limit block 14 slides along the strip hole 8 of the support plate 7. The displacement sensor at the strip hole 8 provides real-time feedback on the slider position, causing the quenching disc 15 to move horizontally to directly below the heating zone. The displacement sensor transmits the position information. The signal is transmitted back to the PLC. After confirmation of arrival, motor 2 stops. During the heating phase, the PLC controls hydraulic cylinder 2 5 to start. Its piston rod extends and retracts, driving the lifting tube 3 to rise and fall along the insertion hole 2 11. The mounting plate 18 moves synchronously. The displacement sensor on the lifting tube 3 monitors the height in real time and feeds it back to the PLC until the distance between the resistance heating module 19 and the saw blade tooth tip is adjusted to the set value. Then, the power control module 20 supplies power to the resistance heating module 19 according to the PLC preset parameters. The infrared temperature sensor around the tooth tip collects the tooth tip temperature in real time. When the temperature reaches the austenitizing temperature, a feedback signal is sent to the PLC. C. The PLC-controlled power supply module 20 adjusts the power for heat preservation, ensuring uniform temperature at the tooth tips. During this process, the partition 6 is in a lowered state, driven by hydraulic cylinder 4. The displacement sensor confirms the position, isolating the heating zone from the cooling zone to prevent the spray unit 9 from being affected by high temperature. During the transfer phase, after the heat preservation is completed, the PLC-controlled power supply module 20 cuts off the heating power and simultaneously starts hydraulic cylinder 4 to raise the partition 6. Then, motor 2 starts again, driving the quenching plate 15 to quickly move horizontally to the cooling zone. After the displacement sensor provides a signal indicating that it has reached its position, motor 2 stops. During the cooling phase... The PLC commands the spray unit 9 to start. The flow sensor on the spray unit 9 monitors the flow of the cooling medium in real time to ensure that it meets the set value. The cooling medium is accurately sprayed onto the tooth tip. The infrared temperature sensor continuously monitors the cooling rate of the tooth tip. When the cooling rate is lower than the threshold, the PLC adjusts the spray flow. The cooling waste liquid in the quenching plate 15 is discharged through the drain hole 17 on the clamping plate 16. The liquid level sensor at the drain hole 17 monitors the discharge of waste liquid to avoid liquid accumulation. After cooling is completed, the PLC controls all components to reset. The operator takes out the quenched band saw blade and completes the entire quenching process.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quenching device for controllable hardness of band saw blade teeth, comprising a quenching chamber (1), characterized in that, Also includes: The support plate (7) is set inside the quenching box (1). The three sides of the support plate (7) are fixedly connected to the three side walls inside the quenching box (1). The support plate (7) divides the quenching box (1) into upper and lower parts. The band saw blade quenching disc structure is set inside the quenching box (1). The band saw blade quenching disc structure includes a quenching and cooling drive structure and a quenching disc (15). The quenching cooling drive structure is located in the lower half of the quenching box (1) separated by the support plate (7), and the quenching plate (15) is located in the upper half of the quenching box (1) separated by the support plate (7). The tooth tip heating structure is set in the upper half of the quenching box (1) and separated by the support plate (7). The tooth tip heating structure is located on the side of the quenching box (1) away from the box door and is above the quenching plate (15). The spray unit (9) is located in the upper half of the quenching box (1) and is separated by the support plate (7). The spray unit (9) is located on the side of the quenching box (1) near the door. A partition assembly is disposed in the upper half of the quenching box (1) and separated by the support plate (7), the partition assembly being located between the spray unit (9) and the tooth tip heating structure.

2. The band saw blade tooth tip hardness controllable quenching device according to claim 1, characterized in that, The quenching cooling drive structure includes a motor (2), a lead screw (12), a slider (13), and a limiting block (14). The mounting surface of the output shaft of the motor (2) is fixedly connected to the outer side of the quenching box (1). The output shaft of the motor (2) passes through the quenching box (1) and is rotatably connected to it. The motor (2) is located between the support plate (7) and the bottom surface of the quenching box (1). The output shaft of the motor (2) faces the door end of the quenching box (1). One end of the output shaft is connected to a lead screw (12) via a coupling, and the other end of the lead screw (12) is connected to a bearing seat. The inner ring of the bearing seat is fixedly connected to the lead screw (12), and the side of the bearing seat is fixedly connected to the inner wall of the quenching box (1). One side of the slider (13) is provided with a threaded hole, and the slider (13) is sleeved on the lead screw (12). The side of the slider (13) opposite to the support plate (7) is fixedly connected with multiple limit blocks (14) distributed equidistantly along a straight line.

3. The band saw blade tooth tip hardness controllable quenching device according to claim 2, characterized in that, The support plate (7) has multiple strip holes (8) that are equidistantly distributed along a straight line on the side opposite to the limiting block (14). The limiting block (14) slides through the strip holes (8) and is connected to the strip holes (8). The end of the limiting block (14) away from the slider (13) is fixedly connected to the side of the quenching plate (15) away from the opening.

4. The band saw blade tooth tip hardness controllable quenching device according to claim 1, characterized in that, The quenching plate (15) has multiple sets of clamping plates (16) that are equidistantly distributed along a straight line on the opposite side of the opening. Each set of clamping plates (16) consists of two parallel clamping plates (16).

5. A band saw blade tooth tip hardness controllable quenching device according to claim 4, characterized in that, The top surface of the quenching box (1) is provided with a second insertion hole (11), which is located on the side of the quenching box (1) away from the box door.

6. A band saw blade tooth tip hardness controllable quenching device according to claim 5, characterized in that, The tooth tip heating structure includes a mounting plate (18), a resistance heating module (19), a lifting tube (3), a power control module (20), and a hydraulic cylinder (5). Multiple sets of resistance heating modules (19) are mounted on one side of the mounting plate (18), with each set of resistance heating modules (19) corresponding to a set of clamping plates (16). A lifting tube (3) is fixedly connected to the side of the mounting plate (18) facing away from the resistance heating modules (19). A power control module (20) is installed inside the lifting tube (3). The power control module (20) is connected to... The resistance heating module (19) is electrically connected. The mounting plate (18) and the resistance heating module (19) are located between the support plate (7) and the top surface of the quenching box (1). The lifting pipe (3) is slidably connected to the second insertion hole (11). The top surface of the quenching box (1) is connected to the second hydraulic cylinder (5) on one side of the lifting pipe (3). The bottom surface of the cylinder of the second hydraulic cylinder (5) is fixedly connected to the quenching box (1). The lug at one end of the piston rod of the second hydraulic cylinder (5) is fixedly connected to the end of the lifting pipe (3) outside the quenching box (1).

7. A band saw blade tooth tip hardness controllable quenching device according to claim 6, characterized in that, The top surface of the quenching box (1) is provided with a through hole (10), which is located between one end of the box door of the quenching box (1) and the lifting pipe (3).

8. A band saw blade tooth tip hardness controllable quenching device according to claim 7, characterized in that, The partition assembly includes a partition (6) and a hydraulic cylinder (4). The partition (6) is inserted into the insertion hole (10). The top surface of the quenching box (1) is connected to the hydraulic cylinder (4) on one side of the partition (6). The bottom surface of the cylinder body of the hydraulic cylinder (4) is fixedly connected to the quenching box (1). The lug at one end of the piston rod of the hydraulic cylinder (4) is fixedly connected to one end of the partition (6) outside the quenching box (1).

9. A band saw blade tooth tip hardness controllable quenching device according to claim 8, characterized in that, The spray unit (9) is snapped into the quenching box (1). The spray unit (9) is located on the side of the partition (6) away from the lifting pipe (3). The clamp (16) is provided with multiple drain holes (17) on the side opposite to the door of the quenching box (1).

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