Numerical control induction quenching machine tool for large workpieces

Abstract

The invention discloses a large workpiece numerical control induction quenching machine tool, and relates to the technical field of quenching machine tools, the large workpiece numerical control induction quenching machine tool comprises a base, rails are fixedly mounted on two sides of the top of the base, a shell is fixedly mounted at one end of the base, and a water inlet pipe and a control panel are fixedly mounted on two sides of the shell respectively; the water inlet pipe penetrates through the shell and extends into the shell, water leakage grooves are formed in the two sides of the inner wall of the shell, an inductor is fixedly installed at the top of an inner cavity of the shell and electrically connected with the control panel, a conveying mechanism is installed over the base, and a placing mechanism is fixedly installed at the top of the conveying mechanism. Filtering and discharging assemblies are installed on the two sides of the bottom of the shell, and a quenching mechanism is installed in the shell. According to the numerical control induction quenching machine tool for the large workpieces, through the arrangement of the quenching mechanism, cooling water is uniformly and powerfully sprayed to the surfaces of the workpieces, the uniformity and stability of the quenching cooling effect are improved, and the quenching quality of the workpieces is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of quenching machines, and specifically to a numerically controlled induction quenching machine for large workpieces. Background Art

[0002] Nowadays, large workpieces are widely used and have strict requirements for their performance. With the continuous progress of technology, many limitations have emerged in traditional quenching processes and equipment when dealing with large workpieces.

[0003] Traditional quenching methods often rely on manual experience operation and it is difficult to accurately control the key parameters during the quenching process. During the quenching of large workpieces, due to the large volume and complex shape of the workpiece, the heat transfer is uneven, which easily leads to inconsistent microstructure transformation in different parts of the workpiece, thereby affecting the overall mechanical properties. For example, uneven surface hardness may cause increased local wear, while excessive internal residual stress will increase the risk of workpiece deformation or even cracking.

[0004] Some existing quenching equipment will generate a large amount of waste water containing impurities and heat during the quenching process. If it cannot be effectively filtered and recycled, it will not only cause waste of resources, but also may pollute the environment. When traditional quenching equipment cools, the uneven distribution of water flow will cause uneven cooling effect and reduce the quenching quality. Summary of the Invention

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A numerically controlled induction quenching machine for large workpieces, comprising: A base, on both sides of the top of the base, there are fixedly installed tracks. One end of the base is fixedly installed with a housing. On both sides of the housing, there are respectively fixedly installed a water inlet pipe and a control panel. The water inlet pipe penetrates through the housing and extends into its interior. On both sides of the inner wall of the housing, there are provided water leakage grooves. The distance between the water leakage grooves gradually decreases from top to bottom. The design of the water leakage grooves is beneficial to guiding the water flow to gather and drain. At the top of the inner cavity of the housing, there is fixedly installed an inductor, and the inductor is electrically connected to the control panel. When the inductor senses the entry of the workpiece, an electrical signal is transmitted to the control panel, and the controller in the control panel controls an external device to supply water to the machine tool; A conveying mechanism, the conveying mechanism is installed on the top of the track, and on the top of the conveying mechanism, there is fixedly installed a placing mechanism. The conveying mechanism drives the placing mechanism above and the placed workpiece to move along the track direction, completing the conveying of the workpiece to the quenching area; A filtering and discharging assembly, the filtering and discharging assembly is installed on both sides of the bottom of the housing; A quenching mechanism, the quenching mechanism is installed inside the housing, and the quenching mechanism is arranged directly above the placing mechanism; Among them, the quenching mechanism includes an arc-shaped water pipe, one end of the arc-shaped water pipe is connected to the water inlet pipe, the other end of the arc-shaped water pipe is fixedly connected to a first fixed plate, and the middle of the top of the arc-shaped water pipe is fixedly connected to a second fixed plate. The first fixed plate and the second fixed plate are respectively fixedly installed at the top and side of the inner cavity of the shell, which play a role in stabilizing the arc-shaped water pipe and ensuring its stable position during operation. A water outlet pipe is fixedly installed on the inner curved surface of the arc-shaped water pipe, and a water outlet assembly is detachably installed on one end of the water outlet pipe away from the arc-shaped water pipe. The water outlet pipe guides the cooling water in the arc-shaped water pipe to the water outlet assembly, providing a passage for subsequent water flow dispersion, injection, etc.

[0006] Preferably, the conveying mechanism includes a motor and a trapezoidal slider, the motor is fixedly mounted on one end of the base away from the shell, the output end of the motor is fixedly connected to a screw rod, the other end of the screw rod is rotatably connected to the inner wall of the shell, a threaded hole is opened on the side of the trapezoidal slider, the trapezoidal slider is installed on the outer surface of the screw rod through the threaded hole, the trapezoidal slider is slidably mounted on the top of the track, the screw rod rotates under the drive of the motor, and the rotational motion is converted into linear motion of the trapezoidal slider through cooperation with the threaded hole on the trapezoidal slider, thereby realizing the conveying function.

[0007] Preferably, the placing mechanism includes a water collecting tray and a fixed bent plate, the water collecting tray is fixedly installed on the top of the trapezoidal slider, a water receiving tray is fixedly installed on the top of the water collecting tray, the water collecting tray is specifically a trapezoidal tray expanding upward, and a pad is fixedly installed on the surface of the water collecting tray, so that there is a certain space between the water collecting tray and the workpiece to accommodate cooling water, thereby preventing the bottom of the workpiece from being inadequately quenched.

[0008] Preferably, the fixed bent plate is rotatably installed on the inner side of the water receiving tray via a rotating shaft, a water leakage hole is opened on the surface of the fixed bent plate, and a first return spring is fixedly connected between the outer bending surface of the fixed bent plate and the inner side of the water receiving tray. When the workpiece is placed on the pad, the workpiece squeezes one end of the fixed bent plate to rotate it, and the other end of the fixed bent plate squeezes the side of the workpiece to place it stably.

[0009] Preferably, a water inlet groove is provided at the bottom of the inner side of the water collecting tray, and the water inlet groove is arranged adjacent to the fixed bent plate. The height of the water inlet groove is slightly higher than the pad so that the cooling water can fully contact the workpiece. Water outlet grooves are provided on both sides of the water collecting tray, and the water outlet grooves are arranged below the water inlet groove, and the water inlet groove is connected to the water outlet groove.

[0010] Preferably, an annular baffle is fixedly installed inside the arc-shaped water pipe, and the annular baffle is arranged at the interval of the water outlet pipe. The cross-section of the annular baffle is trapezoidal, and the narrower end faces the water inlet end. The annular baffle increases the circulation time of cooling water in the arc-shaped water pipe, so that the cooling water can play a more effective role.

[0011] Preferably, the water outlet assembly includes a mounting housing detachably mounted at the water outlet end of the water outlet pipe. A guide rail is fixedly installed on the inner wall of the mounting housing. The number of the guide rails is six, and the six guide rails are evenly distributed on the inner wall of the mounting housing.

[0012] Preferably, an arc-shaped slider is slidably connected to the outer surface of the guide rail. An arc-shaped spring is fixedly connected between the arc-shaped sliders. A second return spring is fixedly connected to the bottom of the arc-shaped slider. The other end of the second return spring is fixedly connected to a water blocking conical ring. The water blocking conical ring is slidably installed at the bottom of the housing. The top of the water blocking conical ring is a concave arc surface to facilitate the dispersion of water flow. When the quenching mechanism is filled with water, the water flow impacts the water blocking conical ring to make it slide out of the mounting housing. The arc-shaped slider slides and the arc-shaped spring is compressed, reducing the water passing area and increasing the water pressure.

[0013] Preferably, a first rotating rod is rotatably connected to the edge of the bottom of the mounting housing through a rotating shaft. A second rotating rod is fixedly connected to the side of the water blocking conical ring away from the second return spring. The number of the first rotating rods and the second rotating rods is six each. The shaft ends of the first rotating rod and the second rotating rod are rotatably connected through a rotating shaft. The first rotating rod and the second rotating rod disperse the water flow so that the workpiece is evenly contacted with the water flow.

[0014] Preferably, the filtering and discharging assembly includes a discharging pipe fixedly installed on both sides of the bottom of the housing. The discharging pipe is arranged directly below the water leakage groove. A filtering disc is detachably installed at the end of the discharging pipe away from the housing. The filtering disc filters the liquid flowing out of the discharging pipe to intercept oxide debris and the like.

[0015] The present invention provides a numerically controlled induction quenching machine tool for large workpieces, having the following beneficial effects: First, in this numerically controlled induction quenching machine tool for large workpieces, through the setting of the quenching mechanism, the cooling water enters the arc-shaped water pipe from the water inlet pipe. Due to the internal annular baffle being staggered with the water outlet pipe, the flow path of the cooling water in the arc-shaped water pipe is blocked by the annular baffle, prolonging the residence time. Then it reaches the water outlet assembly through the water outlet pipe. The water flow impacts the water blocking conical ring to make it move outward. The arc-shaped slider slides along the guide rail, and the arc-shaped spring is compressed to change the water passing area and pressure. At the same time, the first rotating rod and the second rotating rod cooperate to block the water flow to disperse and spray the water flow. This mechanism enables the cooling water to be evenly and powerfully sprayed onto the surface of the workpiece, improving the uniformity and stability of the quenching and cooling effect, ensuring the quenching quality of the workpiece, and meeting the quenching requirements of workpieces with different shapes and sizes.

[0016] Second, in this CNC induction hardening machine tool for large workpieces, through the setting of the conveying mechanism, the motor drives the lead screw to rotate. The trapezoidal slider is matched with the lead screw through the threaded hole and slides on the track. This mechanism drives the placement mechanism and the workpiece to move precisely and smoothly, and can control the residence time and moving speed of the workpiece in the hardening area, realizing the orderly hardening treatment of different parts of the workpiece, and improving the consistency of production efficiency and hardening quality.

[0017] Third, in this CNC induction hardening machine tool for large workpieces, through the setting of the placement mechanism, when the workpiece is placed on the cushion block, one end of the fixed bending plate is extruded. The fixed bending plate rotates around the rotating shaft, and the other end extrudes and fixes the side of the workpiece under the action of the first return spring. During hardening, water falls on the water receiving tray, passes through the water inlet groove, and then flows out through the water outlet groove. This mechanism can stably fix workpieces of different sizes to prevent shaking and ensure the uniformity of hardening; the space between the water collecting tray and the workpiece and the special structure ensure that the bottom of the workpiece can be fully cooled, preventing incomplete hardening at the bottom and improving the overall hardening quality.

[0018] Fourth, in this CNC induction hardening machine tool for large workpieces, through the setting of the filtering and discharging assembly, the water and impurities generated during hardening flow into the discharging pipe through the water leakage groove on the inner wall of the shell, and then through the detachable filter disk, effectively filtering and collecting impurities and debris, facilitating cleaning and maintenance, ensuring the stable operation of the machine tool drainage system, and effectively filtering and recycling the waste water, preventing resource waste and environmental pollution.

[0019] Fifth, in this CNC induction hardening machine tool for large workpieces, through the setting of the inductor, when the inductor senses that the workpiece enters the specified position, it sends a signal to the control system, triggers the water supply pipe to supply water, and starts the hardening program, realizing the automatic control of the hardening process, accurately determining the hardening timing, reducing human operation errors, improving the accuracy and stability of the hardening process, and enhancing production efficiency and product quality. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention; Figure 2 It is a schematic diagram of the appearance of the present invention; Figure 3 It is a schematic diagram of the structure of the conveying mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the placement mechanism of the present invention; Figure 5 It is a partial sectional view of the placement mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the hardening mechanism of the present invention; Figure 7 It is a partial sectional view of the hardening mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the water outlet assembly of the present invention; Figure 9Partial sectional view of the water outlet component of the present invention; Figure 10 Schematic structural diagram of the filtering and discharging component of the present invention.

[0021] In the figure: 1, base; 2, track; 3, conveying mechanism; 31, motor; 32, lead screw; 33, trapezoidal slider; 34, threaded hole; 4, placing mechanism; 41, water collecting tray; 42, water receiving tray; 43, cushion block; 44, fixed bent plate; 45, first return spring; 46, water leakage hole; 47, water inlet groove; 48, water outlet groove; 5, housing; 6, filtering and discharging component; 61, discharging pipe; 62, filtering disc; 7, water inlet pipe; 8, quenching mechanism; 81, arc-shaped water pipe; 82, first fixing plate; 83, second fixing plate; 84, water outlet pipe; 85, water outlet component; 851, installation housing; 852, water blocking conical ring; 853, first rotating rod; 854, second rotating rod; 855, guide rail; 856, arc-shaped slider; 857, second return spring; 858, arc-shaped spring; 86, annular baffle; 9, water leakage groove; 10, control panel; 11, inductor. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] The first embodiment is as Figures 1 to 3 shown. The present invention provides a technical solution: a numerically controlled induction quenching machine tool for large workpieces, including: A base 1, on both sides of the top of the base 1, tracks 2 are fixedly installed, at one end of the base 1, a housing 5 is fixedly installed, on both sides of the housing 5, a water inlet pipe 7 and a control panel 10 are respectively fixedly installed, the water inlet pipe 7 penetrates through the housing 5 and extends into its interior, on both sides of the inner wall of the housing 5, water leakage grooves 9 are opened, the distance between the water leakage grooves 9 gradually decreases from top to bottom, the design of the water leakage grooves 9 is conducive to guiding the water flow to gather and discharge, at the top of the inner cavity of the housing 5, an inductor 11 is fixedly installed, the inductor 11 is electrically connected to the control panel 10, when it senses that a workpiece enters, the machine tool conducts water; A conveying mechanism 3, the conveying mechanism 3 is installed on the top of the track 2, on the top of the conveying mechanism 3, a placing mechanism 4 is fixedly installed, the conveying mechanism 3 drives the upper placing mechanism 4 and the placed workpiece to move along the direction of the track 2, completing the conveying of the workpiece to the quenching area; The conveying mechanism 3 includes a motor 31 and a trapezoidal slider 33. The motor 31 is fixedly installed at one end of the base 1 away from the housing 5. The output end of the motor 31 is fixedly connected to a lead screw 32. The other end of the lead screw 32 is rotatably connected to the inner wall of the housing 5. A threaded hole 34 is formed in the side surface of the trapezoidal slider 33. The trapezoidal slider 33 is drivingly installed on the outer surface of the lead screw 32 through the threaded hole 34. The trapezoidal slider 33 is slidably installed on the top of the track 2. The lead screw 32 rotates under the drive of the motor 31. Through the cooperation with the threaded hole 34 on the trapezoidal slider 33, the rotational motion is converted into the linear motion of the trapezoidal slider 33, thereby realizing the conveying function. When the motor 31 works, it drives the lead screw 32 to rotate. The trapezoidal slider 33 slides on the track 2 through the cooperation of the threaded hole 34 and the lead screw 32, thereby driving the placing mechanism 4 and the workpiece to move.

[0024] Second Embodiment. On the basis of the first embodiment, please refer to Figures 1 to 10 As shown, the placing mechanism 4 includes a water collecting tray 41 and a fixed bending plate 44. The water collecting tray 41 is fixedly installed on the top of the trapezoidal slider 33. A water receiving tray 42 is fixedly installed on the top of the water collecting tray 41. The water collecting tray 41 is specifically a trapezoidal tray that expands upward. A cushion block 43 is fixedly installed on the surface of the water collecting tray 41, so that there is a certain space between the water collecting tray 41 and the workpiece to accommodate cooling water, preventing the bottom of the workpiece from being inadequately quenched.

[0025] The fixed bending plate 44 is rotatably installed on the inner side surface of the water receiving tray 42 through a rotating shaft. A water leakage hole 46 is formed in the surface of the fixed bending plate 44. A first return spring 45 is fixedly connected between the outer bent surface of the fixed bending plate 44 and the inner side surface of the water receiving tray 42. When the workpiece is placed on the cushion block 43, the workpiece presses one end of the fixed bending plate 44 to make it rotate, and the other end of the fixed bending plate 44 presses the side surface of the workpiece to make it stably placed.

[0026] An inlet water groove 47 is formed at the bottom of the inner side surface of the water receiving tray 42. The inlet water groove 47 is arranged adjacent to the fixed bending plate 44. The height of the inlet water groove 47 is slightly higher than that of the cushion block 43, so that the cooling water can fully contact the workpiece. Water outlet grooves 48 are formed on both sides of the water collecting tray 41, and the water outlet grooves 48 are arranged below the inlet water groove 47. The inlet water groove 47 is communicated with the water outlet grooves 48.

[0027] The filtering and discharging assembly 6 includes a discharging pipe 61. The discharging pipe 61 is fixedly installed on both sides of the bottom of the housing 5. The discharging pipe 61 is arranged directly below the water leakage groove 9. A filtering disc 62 is detachably installed at the end of the discharging pipe 61 away from the housing 5. The water and impurities falling on the bottom of the housing 5 flow into the discharging pipe 61 and are then filtered through the detachable filtering disc 62. The filtered water is discharged, and the impurities are left on the filtering disc 62, which is convenient for cleaning and maintenance, ensuring the stable operation of the machine tool.

[0028] Third Embodiment. On the basis of the first and second embodiments, please refer to Figures 1 to 9As shown, the quenching mechanism 8 is installed inside the housing 5, and the quenching mechanism 8 is arranged directly above the placing mechanism 4; The quenching mechanism 8 includes an arc-shaped water pipe 81. One end of the arc-shaped water pipe 81 is connected to the water inlet pipe 7, and the other end of the arc-shaped water pipe 81 is fixedly connected with a first fixing plate 82. The middle of the top of the arc-shaped water pipe 81 is fixedly connected with a second fixing plate 83. The first fixing plate 82 and the second fixing plate 83 are respectively fixedly installed at the top and side of the inner cavity of the housing 5, which plays a role in stabilizing the arc-shaped water pipe 81 and ensuring its stable position during operation. The inner curved surface of the arc-shaped water pipe 81 is fixedly installed with a water outlet pipe 84. The water outlet pipe 84 is arranged opposite to the second fixing plate 83. One end of the water outlet pipe 84 away from the arc-shaped water pipe 81 is detachably installed with a water outlet assembly 85. The water outlet pipe 84 guides the cooling water in the arc-shaped water pipe 81 to the water outlet assembly 85, providing a passage for subsequent water flow dispersion, spraying, etc.

[0029] An annular baffle 86 is fixedly installed inside the arc-shaped water pipe 81. The annular baffle 86 is arranged at the interval of the water outlet pipe 84. The cross-section of the annular baffle 86 is trapezoidal, and the narrower end faces the water inlet end. The annular baffle 86 increases the flow time of the cooling water in the arc-shaped water pipe 81, enabling the cooling water to play a more sufficient role.

[0030] The water outlet assembly 85 includes a mounting housing 851. The mounting housing 851 is detachably installed at the water outlet end of the water outlet pipe 84. Guide rails 855 are fixedly installed on the inner wall of the mounting housing 851. The number of guide rails 855 is six, and the six guide rails 855 are evenly distributed on the inner wall of the mounting housing 851.

[0031] An arc-shaped slider 856 is slidably connected to the outer surface of the guide rail 855. An arc-shaped spring 858 is fixedly connected between the arc-shaped sliders 856. The bottom of the arc-shaped slider 856 is fixedly connected with a second return spring 857. The other end of the second return spring 857 is fixedly connected with a water blocking conical ring 852. The top of the water blocking conical ring 852 is a concave arc surface, which is convenient for the dispersion of water flow. When the quenching mechanism 8 is filled with water, the water flow impacts the water blocking conical ring 852, causing it to slide out of the mounting housing 851. The arc-shaped slider 856 slides, and the arc-shaped spring 858 is compressed, reducing the water passing area and increasing the water flow pressure.

[0032] At the edge of the bottom of the mounting housing 851, a first rotating rod 853 is rotatably connected through a rotating shaft. On one side of the water blocking conical ring 852 away from the second return spring 857, a second rotating rod 854 is fixedly connected. The number of the first rotating rod 853 and the second rotating rod 854 is six. The shaft ends of the first rotating rod 853 and the second rotating rod 854 are rotatably connected through a rotating shaft. The first rotating rod 853 and the second rotating rod 854 disperse the water flow, enabling the workpiece to contact the water flow evenly.

[0033] During use, the staff places the large workpiece on the cushion block 43 of the placement mechanism 4. The workpiece presses one end of the fixed bending plate 44, and the fixed bending plate 44 rotates around the rotating shaft. Under the action of the first return spring 45, the other end presses the side of the workpiece, so that the workpiece is stably placed on the cushion block 43. Then the motor 31 is started to drive the lead screw 32 to rotate. The trapezoidal slider 33 slides on the track 2 through the cooperation of the threaded hole 34 and the lead screw 32, thereby driving the placement mechanism 4 and the workpiece to move. When the workpiece moves into the housing 5, the inductor 11 senses the workpiece, and the water inlet pipe 7 starts to supply water.

[0034] The cooling water enters the arc-shaped water pipe 81 from the water inlet pipe 7. Blocked by the annular baffle 86 in the arc-shaped water pipe 81, the cooling water flows to the water outlet assembly 85 through the water outlet pipe 84. When the water flow impacts the water blocking cone ring 852, the water blocking cone ring 852 slides out of the installation housing 851. The second return spring 857 pulls the arc-shaped slider 856 to slide along the guide rail 855, and the arc-shaped spring 858 is compressed, reducing the water passing area and increasing the water flow pressure. Moreover, the first rotating rod 853 and the second rotating rod 854 rotate and unfold to disperse the water flow, and the cooling water is evenly and powerfully sprayed onto the surface of the workpiece for quenching.

[0035] During the quenching process, part of the cooling water will fall on the water receiving tray 42 to quench the bottom of the workpiece, and then flow out through the water inlet groove 47, through the water passing groove 49 and the water outlet groove 48 and fall into the housing 5.

[0036] The water and impurities falling on the bottom of the housing 5 flow into the discharge pipe 61, and then pass through the detachable filter disc 62 for filtration. The filtered water is discharged, and the impurities are left on the filter disc 62, which is convenient for cleaning and maintenance and ensures the stable operation of the machine tool.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-scale CNC induction hardening machine tool, characterized in that: include: A base (1), tracks (2) being fixedly mounted on both sides of the top of the base (1), a shell (5) being fixedly mounted on one end of the base (1), a water inlet pipe (7) and a control panel (10) being fixedly mounted on both sides of the shell (5), the water inlet pipe (7) penetrating the shell (5) and extending into the interior thereof, water leakage grooves (9) being provided on both sides of the inner wall of the shell (5), a sensor (11) being fixedly mounted on the top of the inner cavity of the shell (5), the sensor (11) being electrically connected to the control panel (10); A conveying mechanism (3), the conveying mechanism (3) being installed on the top of the track (2), and a placing mechanism (4) being fixedly installed on the top of the conveying mechanism (3); A filter discharge assembly (6), wherein the filter discharge assembly (6) is mounted on both sides of the bottom of the housing (5); A quenching mechanism (8), wherein the quenching mechanism (8) is installed inside the housing (5); The quenching mechanism (8) comprises an arc-shaped water pipe (81), one end of the arc-shaped water pipe (81) is connected to the water inlet pipe (7), the other end of the arc-shaped water pipe (81) is fixedly connected to a first fixed disk (82), the middle of the top of the arc-shaped water pipe (81) is fixedly connected to a second fixed disk (83), the first fixed disk (82) and the second fixed disk (83) are respectively fixedly mounted on the top and side of the inner cavity of the shell (5), the inner curved surface of the arc-shaped water pipe (81) is fixedly mounted with a water outlet pipe (84), and the end of the water outlet pipe (84) away from the arc-shaped water pipe (81) is detachably mounted with a water outlet assembly (85).

2. A large workpiece CNC induction hardening machine tool according to claim 1, characterized in that: The conveying mechanism (3) comprises a motor (31) and a trapezoidal slider (33), wherein the motor (31) is fixedly mounted on one end of the base (1) away from the housing (5), the output end of the motor (31) is fixedly connected to a screw rod (32), the other end of the screw rod (32) is rotatably connected to the inner wall of the housing (5), a threaded hole (34) is provided on the side of the trapezoidal slider (33), the trapezoidal slider (33) is transmission-mounted on the outer surface of the screw rod (32) through the threaded hole (34), and the trapezoidal slider (33) is slidably mounted on the top of the track (2).

3. A large workpiece CNC induction hardening machine tool according to claim 2, characterized in that: The placement mechanism (4) comprises a water collecting pan (41) and a fixed bent plate (44); the water collecting pan (41) is fixedly mounted on the top of the trapezoidal sliding block (33); a water receiving pan (42) is fixedly mounted on the top of the water collecting pan (41); and a cushion block (43) is fixedly mounted on the surface of the water collecting pan (41).

4. A large workpiece CNC induction hardening machine tool according to claim 3, characterized in that: The fixed bent plate (44) is rotatably mounted on the inner side surface of the water receiving tray (42) via a rotating shaft, a water leakage hole (46) is provided on the surface of the fixed bent plate (44), and a first return spring (45) is fixedly connected between the outer bending surface of the fixed bent plate (44) and the inner side surface of the water receiving tray (42).

5. A large-scale workpiece CNC induction hardening machine tool according to claim 4, characterized in that: A water inlet groove (47) is provided at the bottom of the inner side of the water receiving tray (42), and the water inlet groove (47) is arranged adjacent to the fixed curved plate (44). Water outlet grooves (48) are provided on both sides of the water collecting tray (41), and the water outlet grooves (48) are arranged below the water inlet groove (47). The water inlet groove (47) is connected to the water outlet groove (48).

6. A large-scale workpiece CNC induction hardening machine tool according to claim 1, characterized in that: An annular baffle (86) is fixedly installed inside the arc-shaped water pipe (81), and the annular baffle (86) is arranged at the interval of the water outlet pipe (84).

7. A large-scale workpiece CNC induction hardening machine tool according to claim 6, characterized in that: The water outlet assembly (85) comprises a mounting shell (851), the mounting shell (851) being detachably mounted on the water outlet end of the water outlet pipe (84); a water retaining cone ring (852) being slidably mounted on the bottom of the mounting shell (851); a first rotating rod (853) being rotatably connected to the edge of the bottom of the mounting shell (851) via a rotating shaft; a second rotating rod (854) being fixedly connected to the side of the water retaining cone ring (852) away from the second return spring (857); the number of the first rotating rod (853) and the number of the second rotating rod (854) are both six; and the shaft ends of the first rotating rod (853) and the second rotating rod (854) are rotatably connected via a rotating shaft.

8. A large workpiece CNC induction hardening machine tool according to claim 7, characterized in that: A guide rail (855) is fixedly mounted on the inner wall of the installation shell (851), the number of the guide rails (855) is six, and the six guide rails (855) are evenly distributed on the inner wall of the installation shell (851).

9. A large workpiece CNC induction hardening machine tool according to claim 8, characterized in that: The outer surface of the guide rail (855) is slidably connected to an arc-shaped slider (856), an arc-shaped spring (858) is fixedly connected between the arc-shaped sliders (856), a second return spring (857) is fixedly connected to the bottom of the arc-shaped slider (856), and the other end of the second return spring (857) is fixedly connected to the top of the water retaining cone ring (852).

10. The large-scale workpiece CNC induction hardening machine tool according to claim 1, characterized in that: The filter discharge assembly (6) comprises a discharge pipe (61), wherein the discharge pipe (61) is fixedly mounted on both sides of the bottom of the shell (5), the discharge pipe (61) is arranged directly below the water leakage trough (9), and a filter disc (62) is detachably mounted on one end of the discharge pipe (61) away from the shell (5).

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