Double-transformer independent circuit cooperative type deep hardening layer quenching system and control method

Abstract

The invention discloses a double-transformer independent circuit cooperative type deep hardening layer quenching system which is characterized in that two independent heating loops are used for preheating and deep heating of a workpiece respectively, and the depth of a hardening layer stably exceeds 8 mm through the cooperative effect of double inductors. The defects that quenching of a traditional single inductor can only reach 3-5mm and cracks are prone to being generated are remarkably overcome. The system is composed of a first main transformer, a second main transformer, two intermediate frequency cabinets, corresponding capacitors, a quenching transformer and a quenching inductor, all loops operate independently, and precise control over horizontal moving, lifting, micro-moving and spacing adjusting assemblies on a gantry type quenching machine tool is achieved through an integrated operating handle. The machine tool is provided with a quenching liquid conveying pipe and a spray head, and it is ensured that rapid cooling is conducted in time behind a continuous heating area. In addition, an integrated operation handle is adopted to centrally control all procedures, operation is easy and convenient, the abrasion resistance of the large slewing bearing and key parts of wind power equipment is improved, and the service life of the large slewing bearing and the key parts is prolonged.

Description

Technical Field

[0001] This application relates to the field of induction hardening technology, and particularly to a collaborative deep hardening layer quenching system and control method for a dual-transformer independent circuit. Background Art

[0002] In the field of heat treatment of metal parts, the quenching process is a key technology, and its purpose is to obtain high hardness and wear resistance on the metal surface through rapid cooling. However, the traditional single inductor quenching process can only achieve a quenched layer depth of about 3 to 5 mm, which is difficult to meet the requirements for deep hardening and durability of key components such as large slewing bearings, especially the raceways of wind power slewing bearings.

[0003] To overcome this defect, relevant technicians have tried to increase the quenched layer depth by increasing the power or reducing the workpiece rotation speed, but this often results in defects such as cracks on the material surface, seriously affecting the product quality and service life. At the same time, medium-frequency quenching technology, within the frequency range of 1 kHz to 20 kHz, uses the principle of electromagnetic induction to rapidly heat the surface of metal parts and achieve hardening during subsequent rapid cooling, becoming a widely studied and applied technical means.

[0004] In response to the problem that single heating cannot meet the requirements of deep hardening, the dual inductor quenching technology has emerged. This technology enables effective treatment of both the surface layer and the subsurface layer of the workpiece by setting two independent inductors and adopting the methods of high-frequency preheating and medium-frequency deep heating respectively, thereby ensuring that the quenched layer depth can reach more than 8 mm and no cracks will be caused during the process. To achieve the above goals, the dual inductor quenching technology requires that the two inductors must be powered by two independent transformers respectively, and through a specially designed operation process and mechanical structure, ensure that the two heating processes maintain an appropriate spacing in space, and at the same time, the heating area is synchronized with the quenching liquid spraying, so as to form an overall continuous and uniform quenching effect.

[0005] In actual production, a large number of product tests have shown that although the dual inductor quenching process can significantly increase the quenched layer depth and product performance, this process has relatively high requirements for the technical level and collaborative operation of operators, and they must proficiently master the sequence of each step and the key control parameters. Therefore, how to improve the process stability, simplify the operation process, and achieve modular design of the equipment while ensuring the deep hardening effect has become an important problem that needs to be solved urgently in the current technology.

[0006] Based on the above background, the present invention proposes a deep hardening layer quenching system that uses two independent circuits of transformers to work together. This system realizes precise control of surface preheating and deep heating of workpieces through two sets of independent circuits and an integrated operation handle. At the same time, by optimizing the transformer structure and cooling method, it not only ensures the quenching effect but also reduces the equipment volume and operation difficulty, fully meeting the strict requirements for the depth and quality of the hardened layer of large slewing bearings and wind power slewing bearings. Summary of the Invention

[0007] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a cooperative deep hardening layer quenching system and control method for two independent circuits of transformers to solve the problems raised in the above background technology.

[0008] According to one aspect of the present application, a double-transformer independent circuit collaborative deep hardening layer quenching system includes a first main transformer, a second main transformer, a first intermediate frequency cabinet, a second intermediate frequency cabinet, a first capacitor, a second capacitor, a first quenching transformer, a second quenching transformer, a first quenching inductor, a second quenching inductor, a quenching liquid delivery pipe, an integrated operation handle, and a gantry quenching machine tool. The first main transformer is connected to the first intermediate frequency cabinet. The first intermediate frequency cabinet is connected to the first quenching transformer through the first capacitor. The first quenching inductor is installed on the first quenching transformer through a copper busbar. The first main transformer, the first intermediate frequency cabinet, the first capacitor, the first quenching transformer, and the first quenching inductor are sequentially connected in series to form a first independent circuit. The second main transformer is connected to the second intermediate frequency cabinet. The second intermediate frequency cabinet is connected to the second quenching transformer through the second capacitor. The second quenching inductor is installed on the second quenching transformer through a copper busbar. The second main transformer, the second intermediate frequency cabinet, the second capacitor, the second quenching transformer, and the second quenching inductor are sequentially connected in series to form a second independent circuit. The first capacitor, the first quenching transformer, the second capacitor, and the second quenching transformer are all installed on the gantry quenching machine tool. A quenching liquid delivery pipe is also installed on the gantry quenching machine tool. The quenching liquid delivery pipe is externally connected to a quenching liquid device. A quenching liquid spray head is provided at the end of the quenching liquid delivery pipe. The first quenching inductor, the second quenching inductor, and the quenching liquid spray head are sequentially arranged close to each other side by side on the same horizontal plane and face the same direction. The integrated operation handle is provided with azimuth buttons for controlling the moving direction of the gantry quenching machine tool, operation buttons for the first intermediate frequency cabinet and the second intermediate frequency cabinet, and a control valve switch button on the quenching liquid delivery pipe;The gantry quenching machine tool includes a gantry support, a horizontal moving component, a lifting component, a fine movement component, a spacing adjustment component, and a turntable assembly. On both side surfaces of the cross beam at the upper part of the gantry support, horizontal slide rails are fixedly arranged along its length direction. The horizontal moving component is slidably installed on the horizontal slide rails. The first capacitor and the second capacitor are both fixedly installed on the horizontal moving component. A vertically arranged lifting component is installed on the horizontal moving component. A fine movement component is installed at the bottom of the lifting component. A spacing adjustment component is installed below the fine movement component. The first quenching transformer, the second quenching transformer, and the quenching liquid delivery pipe are all installed on the spacing adjustment component. A turntable assembly is rotatably installed directly below the upper part of the gantry support horizontally. The workpiece is clamped and positioned on the table surface of the turntable assembly and driven to rotate by the turntable assembly. The horizontal moving component can drive the first quenching inductor, the second quenching inductor, and the quenching liquid spray head to make horizontal displacement along the cross beam. The lifting component can drive the first quenching inductor, the second quenching inductor, and the quenching liquid spray head to make vertical displacement. The fine movement component can drive the first quenching inductor, the second quenching inductor, and the quenching liquid spray head close to the side wall track of the workpiece. The spacing adjustment component can adjust the spacing between the first quenching transformer and the second quenching transformer.;

[0009] Preferably, the horizontal moving component includes a first slide table, a second slide table, a first motor, a driving gear, and a long rack. The first slide table and the second slide table are respectively slidably installed on the horizontal slide rails on both side surfaces of the cross beam through sliders. A first motor is fixedly installed on the first slide table. A driving gear is fixedly arranged on the output shaft of the first motor. A long rack is fixedly arranged along the length direction on the side surface of the cross beam on one side of the first slide table. The driving gear is in meshing transmission connection with the long rack. An installation platform is fixedly arranged between the first slide table and the second slide table. The installation platform is located above the cross beam and the first capacitor and the second capacitor are fixedly installed on its top. The lifting component is connected to the first slide table and the second slide table.

[0010] Preferably, the lifting component includes a driving member and a guiding member. The driving member and the guiding member are symmetrically distributed on both sides of the cross beam. The driving member is connected to the first slide table. The guiding member is connected to the second slide table;

[0011] The driving member includes a first fixed platform, a driving vertical support, a first vertical slide rail, a second motor, a first lead screw, and a first nut block. The first fixed platform is fixedly connected to the first slide platform. A first nut block is fixedly provided on the outer side surface of the first fixed platform. The first nut block is threadedly sleeved on the first lead screw. Both ends of the first lead screw are vertically installed on the driving vertical support through bearing seats. A second motor is fixedly installed at the top of the driving vertical support. The output shaft of the second motor is fixedly connected to the top end of the first lead screw. A first vertical slide rail is fixedly installed on one side surface of the driving vertical support facing the first fixed platform along the axial direction of the first lead screw. The first fixed platform is slidably installed on the first vertical slide rail through a slider. The guiding member includes a second fixed platform, a guiding vertical support, a second vertical slide rail, a guiding rod, and a sliding seat. The second fixed platform is fixedly connected to the second slide platform. A sliding seat is fixedly provided on the outer side surface of the second fixed platform. The sliding seat is slidably sleeved on the guiding rod. The guiding rod is vertically fixed on the guiding vertical support. A second vertical slide rail is fixedly installed on one side surface of the guiding vertical support facing the second fixed platform along the axial direction of the guiding rod. The second fixed platform is slidably installed on the second vertical slide rail through a slider. The fine movement assembly is connected to the bottoms of the driving vertical support and the guiding vertical support.

[0012] Preferably, the fine movement assembly includes a connecting plate, a short slide rail, a third motor, a second lead screw, a second nut block, and a fine movement plate. The upper surface of the connecting plate is fixedly connected to the bottoms of the driving vertical support and the guiding vertical support. A short slide rail is fixedly provided on the lower surface of the connecting plate along the axial direction of the horizontal slide rail. The fine movement plate is slidably installed on the short slide rail through a slider. A second nut block is fixedly provided on the upper surface of the fine movement plate. The second nut block is threadedly sleeved on the second lead screw. The axis direction of the second lead screw is consistent with the axis direction of the short slide rail and both ends of the second lead screw are installed on the lower surface of the connecting plate through bearing seats. The output shaft of the third motor is fixedly connected to one end of the second lead screw. The third motor is fixedly installed on the connecting plate. The distance adjustment assembly is arranged on the lower surface of the fine movement plate.

[0013] Preferably, the spacing adjustment assembly includes a first adjustment member and a second adjustment member. The length direction of the micro-moving plate extends horizontally along the vertical direction of the axial direction of the short slide rail. The first adjustment member and the second adjustment member are symmetrically arranged along the length direction of the micro-moving plate. The first quenching transformer is installed on the first adjustment member, and the second quenching transformer is installed on the second adjustment member. The first adjustment member includes a first adjustment slide rail, a first adjustment plate, a fourth motor, a fourth lead screw, and a fourth nut seat. The first adjustment slide rail is fixedly arranged on the lower surface of the micro-moving plate, and the axial direction of the first adjustment slide rail is perpendicular to the axial direction of the short slide rail. The first adjustment plate is slidably installed on the first adjustment slide rail through a slider. A fourth nut seat is fixedly arranged on the upper surface of the first adjustment plate. The fourth nut seat is threadedly sleeved on the fourth lead screw. The axial direction of the fourth lead screw is consistent with the axial direction of the first adjustment slide rail, and both ends of the fourth lead screw are installed on the lower surface of the micro-moving plate through support seats. The output shaft of the fourth motor is fixedly connected to one end of the fourth lead screw, and the fourth motor is fixedly installed on the micro-moving plate. The lower surface of the first adjustment plate is fixedly connected to the first quenching transformer through a flange. The second adjustment member includes a second adjustment slide rail, a second adjustment plate, a fifth motor, a fifth lead screw, and a fifth nut seat. The second adjustment slide rail is fixedly arranged on the lower surface of the micro-moving plate, and the axial direction of the second adjustment slide rail is perpendicular to the axial direction of the short slide rail. The second adjustment plate is slidably installed on the second adjustment slide rail through a slider. A fifth nut seat is fixedly arranged on the upper surface of the second adjustment plate. The fifth nut seat is threadedly sleeved on the fifth lead screw. The axial direction of the fifth lead screw is consistent with the axial direction of the second adjustment slide rail, and both ends of the fifth lead screw are installed on the lower surface of the micro-moving plate through support seats. The output shaft of the fifth motor is fixedly connected to one end of the fifth lead screw, and the fifth motor is fixedly installed on the micro-moving plate. The lower surface of the second adjustment plate is fixedly connected to the second quenching transformer through a flange.

[0014] Preferably, a connecting support rod is fixedly installed on one side of the micro-moving plate through a screw. The lower end of the connecting support rod is fixedly connected to the quenching liquid delivery pipe. The first quenching inductor on the first quenching transformer, the second quenching inductor on the second quenching transformer, and the quenching liquid spray head on the quenching liquid delivery pipe are all horizontally oriented towards the center of the turntable assembly.

[0015] Preferably, both the first quenching transformer and the second quenching transformer adopt a single-turn ratio structure.

[0016] A control method for a double-transformer independent circuit collaborative deep hardening layer quenching system specifically includes the following steps:

[0017] Step 1: Clamp the workpiece to be quenched on the fixture of the turntable assembly. Control the horizontal movement component and the lifting component of the gantry quenching machine through the orientation buttons of the integrated operating handle, so that the first quenching inductor, the second quenching inductor and the quenching liquid spray head move to the initial working position;

[0018] Step 2: Start the turntable assembly to drive the workpiece to rotate at a constant speed. Drive the first quenching inductor and the second quenching inductor to fine-tune along the side wall track of the workpiece to a preset gap through the micro-movement component. Use the spacing adjustment component to adjust the spacing between the first quenching transformer and the second quenching transformer respectively, so that the first quenching inductor and the second quenching inductor form a preset overlapping area with the heating area on the surface of the workpiece;

[0019] Step 3: Start the first main transformer and the second main transformer. Set different frequency and power parameters through the operation buttons of the first intermediate frequency cabinet and the second intermediate frequency cabinet. The first independent circuit uses high-frequency current, and the first quenching inductor quickly preheats the surface layer of the workpiece. The second independent circuit uses intermediate-frequency current, and the second quenching inductor deeply penetrates and heats the sub-surface layer of the workpiece. At the same time, control the quenching liquid spray head to spray quenching liquid behind the heating area through the integrated operating handle;

[0020] Step 4: After completing the preset quenching stroke, turn off the power supply of the first main transformer and the second main transformer, and stop the quenching liquid spraying of the quenching liquid spray head; Reset the first quenching inductor, the second quenching inductor and the quenching liquid spray head to a safe position through the horizontal movement component and the lifting component, and control the turntable assembly to stop rotating and unload the workpiece.

[0021] The present invention adopts the above technical solutions. Compared with the prior art, it has the following technical effects:

[0022] 1. The dual inductors of the first quenching inductor and the second quenching inductor are used for collaborative heating, so that the hardened layer depth of the workpiece can be stably reached more than 8 mm, while the traditional process can only achieve 3-5 mm, effectively meeting the requirements of large slewing bearings and wind power equipment for high hardness and wear resistance.

[0023] 2. By respectively adopting high-frequency preheating and intermediate-frequency deep heating, the uniformity and continuity of the heating process are ensured, avoiding problems of local overheating and cracks caused by too high power or too slow running speed, thereby improving the overall quality and reliability of the product.

[0024] 3. The coordinated operation of the two independent circuits in the quenching system realizes the continuous heating of the surface layer and the sub-surface layer of the workpiece, ensuring a reasonable distribution of the temperature gradient during the heat treatment process, thereby significantly improving the quenching effect.

[0025] 4. Through the integrated operating handle and modular design, the integrated control of multiple key processes is achieved, which not only simplifies the operation process, but also improves the process stability and automation level, and helps to reduce the technical threshold and error rate of operators. Brief Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a double-transformer independent circuit collaborative deep hardening layer quenching system according to an embodiment of the present application.

[0027] Figure 2 is a perspective view of a gantry quenching machine tool of a double-transformer independent circuit collaborative deep hardening layer quenching system according to an embodiment of the present application.

[0028] Figure 3 is Figure 2 an enlarged schematic structural view of part A in

[0029] Figure 4 is a perspective view of a lifting component of a double-transformer independent circuit collaborative deep hardening layer quenching system according to an embodiment of the present application.

[0030] Figure 5 is a partial cross-sectional view of a lifting component of a double-transformer independent circuit collaborative deep hardening layer quenching system according to an embodiment of the present application.

[0031] Figure 6 is a perspective view of a fine movement component and a spacing adjustment component of a double-transformer independent circuit collaborative deep hardening layer quenching system according to an embodiment of the present application.

[0032] Figure 7 is a partial front cross-sectional view of a fine movement component and a spacing adjustment component of a double-transformer independent circuit collaborative deep hardening layer quenching system according to an embodiment of the present application.

[0033] Figure 8 is a partial side cross-sectional view of a fine movement component and a spacing adjustment component of a double-transformer independent circuit collaborative deep hardening layer quenching system according to an embodiment of the present application.

[0034] Reference Numerals: 1, gantry support; 101, cross beam; 102, horizontal slide rail; 2, horizontal moving assembly; 21, first slide table; 22, second slide table; 23, first motor; 24, driving gear; 25, long rack; 26, mounting platform; 3, lifting assembly; 31, driving member; 311, first fixed table; 312, driving vertical support; 313, first vertical slide rail; 314, second motor; 315, first lead screw; 316, first nut block; 32, guiding member; 321, second fixed table; 322, guiding vertical support; 323, second vertical slide rail; 324, guiding rod; 325, sliding seat; 4, fine movement assembly; 41, connecting plate; 42, short slide rail; 43, third motor; 44, second lead screw; 45, second nut block; 46, fine movement plate; 5, spacing adjustment assembly; 51, first adjustment member; 511, first adjustment slide rail; 512, first adjustment plate; 513, fourth motor; 514, fourth lead screw; 515, fourth nut block; 52, second adjustment member; 521, second adjustment slide rail; 522, second adjustment plate; 523, fifth motor; 524, fifth lead screw; 525, fifth nut block; 6, turntable assembly; 7, first main transformer; 8, second main transformer; 9, first intermediate frequency cabinet; 10, second intermediate frequency cabinet; 11, first capacitor; 12, second capacitor; 13, first quenching transformer; 14, second quenching transformer; 15, first quenching inductor; 16, second quenching inductor; 17, quenching liquid delivery pipe; 18, integrated operation handle; 19, quenching liquid spray head; 20, workpiece. Detailed Implementation Manner

[0035] In order to make the content of this application easier to be clearly understood, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the Figure 2 accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] As Figure 1 and Figure 2As shown in the figure, the double-transformer independent circuit collaborative deep-hardening layer quenching system includes a first main transformer 7, a second main transformer 8, a first intermediate frequency cabinet 9, a second intermediate frequency cabinet 10, a first capacitor 11, a second capacitor 12, a first quenching transformer 13, a second quenching transformer 14, a first quenching inductor 15, a second quenching inductor 16, a quenching liquid delivery pipe 17, a quenching liquid delivery pipe 17, and a gantry quenching machine tool. The first main transformer 7 is connected to the first intermediate frequency cabinet 9. The first intermediate frequency cabinet 9 is connected to the first quenching transformer 13 via the first capacitor 11. The first quenching inductor 15 is installed on the first quenching transformer 13 through a copper bar. The first main transformer 7, the first intermediate frequency cabinet 9, the first capacitor 11, the first quenching transformer 13, and the first quenching inductor 15 are connected in series in sequence to form a first independent circuit. The second main transformer 8 is connected to the second intermediate frequency cabinet 10. The second intermediate frequency cabinet 10 is connected to the second quenching transformer 14 via the second capacitor 12. The second quenching inductor 16 is installed on the second quenching transformer 14 through a copper bar. The second main transformer 8, the second intermediate frequency cabinet 10, the second capacitor 12, the second quenching transformer 14, and the second quenching inductor 16 are connected in series in sequence to form a second independent circuit. In this design, the first and second main transformers 8 and their corresponding intermediate frequency cabinets, capacitors, and quenching transformers are used to form two independent circuits, each with its own power supply and independent control, avoiding interference between each other, thus ensuring the stability and safety of the entire system. In addition, both the first quenching transformer 13 and the second quenching transformer 14 adopt a single-turn ratio structure, ensuring that the quenching transformer has a smaller volume. Moreover, a coaxial transformer can be used, which will have an even smaller volume.

[0037] The first capacitor 11, the first quenching transformer 13, the second capacitor 12, and the second quenching transformer 14 are all installed on the gantry quenching machine tool. The gantry quenching machine tool is also equipped with a quenching liquid delivery pipe 17. The quenching liquid delivery pipe 17 is externally connected to a quenching liquid device. The end of the quenching liquid delivery pipe 17 is provided with a quenching liquid spray head 19. The first quenching inductor 15, the second quenching inductor 16, and the quenching liquid spray head 19 are arranged side by side and close to each other in sequence along the same horizontal plane and face the same direction. Among them, the first quenching inductor 15 uses high-frequency preheating and the second quenching inductor 16 uses intermediate-frequency deep heating. The two inductors cooperate in heating, ensuring the uniformity and continuity of the heating process, enabling the depth of the hardened layer of the workpiece 20 to stably reach more than 8 mm, while the traditional process can only achieve 3 - 5 mm, effectively meeting the requirements of large slewing bearings and wind power equipment for high hardness and wear resistance.

[0038] The quenching liquid delivery pipe 17 is provided with an azimuth button for controlling the moving direction of the gantry quenching machine tool, operation buttons for the first intermediate frequency cabinet 9 and the second intermediate frequency cabinet 10, and a control valve switch button on the quenching liquid delivery pipe 17. The operator can centrally control each key link through the quenching liquid delivery pipe 17, thus simplifying the operation process and improving production efficiency.

[0039] The gantry quenching machine tool includes a gantry bracket 1, a horizontal moving component 2, a lifting component 3, a fine movement component 4, a spacing adjustment component 5, and a turntable assembly 6. Horizontal slide rails 102 are fixedly arranged along the length direction on both side surfaces of the cross beam 101 at the upper part of the gantry bracket 1. The horizontal moving component 2 is slidably mounted on the horizontal slide rails 102. Both the first capacitor 11 and the second capacitor 12 are fixedly mounted on the horizontal moving component 2. A vertically arranged lifting component 3 is mounted on the horizontal moving component 2. A fine movement component 4 is mounted at the bottom of the lifting component 3. A spacing adjustment component 5 is mounted below the fine movement component 4. The first quenching transformer 13, the second quenching transformer 14, and the quenching liquid delivery pipe 17 are all mounted on the spacing adjustment component 5. A turntable assembly 6 is rotatably mounted directly below the upper part of the gantry bracket 1 horizontally. The workpiece 20 is clamped and positioned on the tabletop of the turntable assembly 6 and driven to rotate. Through the control of the quenching liquid delivery pipe 17, the horizontal moving component 2 can drive the first quenching inductor 15, the second quenching inductor 16, and the quenching liquid nozzle 19 to make horizontal displacement along the cross beam 101. The lifting component 3 can drive the first quenching inductor 15, the second quenching inductor 16, and the quenching liquid nozzle 19 to make vertical displacement. The fine movement component 4 can drive the first quenching inductor 15, the second quenching inductor 16, and the quenching liquid nozzle 19 close to the side wall track of the workpiece 20. The spacing adjustment component 5 can adjust the spacing between the first quenching transformer 13 and the second quenching transformer 14, and then accurately move the first and second quenching inductors 16 and the quenching liquid nozzle 19 to the preset initial position to ensure a suitable heating gap is formed with the surface of the workpiece 20.

[0040] In one embodiment, in combination with Figures 2 to 5, the horizontal movement component 2 includes a first slide table 21, a second slide table 22, a first motor 23, a driving gear 24 and a long rack 25. The first slide table 21 and the second slide table 22 are respectively slidably mounted on the horizontal slide rails 102 on both sides of the cross beam 101 through sliders. A first motor 23 is fixedly mounted on the first slide table 21, and a driving gear 24 is fixedly provided on the output shaft of the first motor 23. A long rack 25 is fixedly provided along the length direction on the side surface of the cross beam 101 on one side of the first slide table 21. The driving gear 24 is in meshing transmission connection with the long rack 25. An installation platform 26 is fixedly provided between the first slide table 21 and the second slide table 22. The installation platform 26 is located above the cross beam 101 and a first capacitor 11 and a second capacitor 12 are fixedly mounted on its top. The first capacitor 11 and the second capacitor 12 can move synchronously with the installation platform 26 and the first quenching transformer 13 and the second quenching transformer 14. The lifting component 3 is connected to the first slide table 21 and the second slide table 22. This horizontal movement component 2 can drive the first quenching inductor 15, the second quenching inductor 16 and the quenching liquid spray head 19 to make a horizontal displacement along the horizontal slide rail 102 towards the radial outside of the workpiece 20 to be quenched, ensuring that the double inductors and the quenching liquid spray head 19 move to the preset radial positions of the workpiece 20 to be quenched.

[0041] In one embodiment, in combination with Figures 2 to 5, the lifting assembly 3 includes a driving member 31 and a guiding member 32. The driving member 31 and the guiding member 32 are symmetrically distributed on both sides of the cross beam 101. The driving member 31 is connected to the first sliding table 21, and the guiding member 32 is connected to the second sliding table 22. This design makes the weight distribution of the assembly symmetric, which is beneficial to driving the lifting movement of the components below it. Specifically, the driving member 31 includes a first fixed platform 311, a driving vertical support 312, a first vertical slide rail 313, a second motor 314, a first lead screw 315, and a first nut seat 316. The first fixed platform 311 is fixedly connected to the first sliding table 21. A first nut seat 316 is fixedly provided on the outer side surface of the first fixed platform 311. The first nut seat 316 is threadedly sleeved on the first lead screw 315. Both ends of the first lead screw 315 are vertically installed on the driving vertical support 312 through a support seat. A second motor 314 is fixedly installed at the top of the driving vertical support 312. The output shaft of the second motor 314 is fixedly connected to the top end of the first lead screw 315. A first vertical slide rail 313 is fixedly installed on the side surface of the driving vertical support 312 facing the first fixed platform 311 along the axial direction of the first lead screw 315. The first fixed platform 311 is slidably installed on the first vertical slide rail 313 through a slider. The guiding member 32 includes a second fixed platform 321, a guiding vertical support 322, a second vertical slide rail 323, a guiding rod 324, and a sliding seat 325. The second fixed platform 321 is fixedly connected to the second sliding table 22. A sliding seat 325 is fixedly provided on the outer side surface of the second fixed platform 321. The sliding seat 325 is slidably sleeved on the guiding rod 324. The guiding rod 324 is vertically fixed on the guiding vertical support 322. A second vertical slide rail 323 is fixedly installed on the side surface of the guiding vertical support 322 facing the second fixed platform 321 along the axial direction of the guiding rod 324. The second fixed platform 321 is slidably installed on the second vertical slide rail 323 through a slider. The fine movement assembly 4 is connected to the bottoms of the driving vertical support 312 and the guiding vertical support 322. The lifting assembly 3 can drive the first quenching inductor 15, the second quenching inductor 16, and the quenching liquid spray head 19 to make a vertical displacement along the axial direction of the workpiece to be quenched 20 towards the horizontal plane where they are located, ensuring that the double inductors and the quenching liquid spray head 19 move to the preset positions along the axial direction of the workpiece to be quenched 20.

[0042] In one embodiment, in combination with Figures 6 to 8, the fine movement assembly 4 includes a connecting plate 41, a short slide rail 42, a third motor 43, a second lead screw 44, a second nut seat 45 and a fine movement plate 46. The upper surface of the connecting plate 41 is fixedly connected to the bottoms of the driving vertical support 312 and the guiding vertical support 322. A short slide rail 42 is fixedly arranged on the lower surface of the connecting plate 41 along the axial direction of the horizontal slide rail 102. The fine movement plate 46 is slidably mounted on the short slide rail 42 through a slider. A second nut seat 45 is fixedly arranged on the upper surface of the fine movement plate 46. The second nut seat 45 is threadedly sleeved on the second lead screw 44. The axial direction of the second lead screw 44 is consistent with the axial direction of the short slide rail 42, and both ends of the second lead screw 44 are mounted on the lower surface of the connecting plate 41 through bearing seats. The output shaft of the third motor 43 is fixedly connected to one end of the second lead screw 44. The third motor 43 is fixedly mounted on the connecting plate 41. A spacing adjustment assembly 5 is arranged on the lower surface of the fine movement plate 46. The fine movement assembly 4 can drive the first quenching inductor 15, the second quenching inductor 16 and the quenching liquid nozzle 19 to finely adjust along the side wall track of the workpiece 20 to a preset gap.

[0043] In one embodiment, in combination with Figures 6 to 8, the spacing adjustment component 5 includes a first adjustment member 51 and a second adjustment member 52. The length direction of the micro-moving plate 46 extends horizontally along the vertical direction of the axis of the short slide rail 42, and the first adjustment member 51 and the second adjustment member 52 are symmetrically arranged along the length direction of the micro-moving plate 46. The first quenching transformer 13 is installed on the first adjustment member 51, and the second quenching transformer 14 is installed on the second adjustment member 52. The first adjustment member 51 includes a first adjustment slide rail 511, a first adjustment plate 512, a fourth motor 513, a fourth lead screw 514, and a fourth nut seat 515. The first adjustment slide rail 511 is fixedly arranged on the lower surface of the micro-moving plate 46, and the axis direction of the first adjustment slide rail 511 is perpendicular to the axis direction of the short slide rail 42. The first adjustment plate 512 is slidably installed on the first adjustment slide rail 511 through a slider. The upper surface of the first adjustment plate 512 is fixedly provided with a fourth nut seat 515. The fourth nut seat 515 is threadedly sleeved on the fourth lead screw 514. The axis direction of the fourth lead screw 514 is consistent with the axis direction of the first adjustment slide rail 511, and both ends of the fourth lead screw 514 are installed on the lower surface of the micro-moving plate 46 through a support seat. The output shaft of the fourth motor 513 is fixedly connected to one end of the fourth lead screw 514, and the fourth motor 513 is fixedly installed on the micro-moving plate 46. The lower surface of the first adjustment plate 512 is fixedly connected to the first quenching transformer 13 through a flange. Through the flange connection design, the angle of the first quenching inductor 15 on the first quenching transformer 13 can be adjusted. The second adjustment member 52 includes a second adjustment slide rail 521, a second adjustment plate 522, a fifth motor 523, a fifth lead screw 524, and a fifth nut seat 525. The second adjustment slide rail 521 is fixedly arranged on the lower surface of the micro-moving plate 46, and the axis direction of the second adjustment slide rail 521 is perpendicular to the axis direction of the short slide rail 42. The second adjustment plate 522 is slidably installed on the second adjustment slide rail 521 through a slider. The upper surface of the second adjustment plate 522 is fixedly provided with a fifth nut seat 525. The fifth nut seat 525 is threadedly sleeved on the fifth lead screw 524. The axis direction of the fifth lead screw 524 is consistent with the axis direction of the second adjustment slide rail 521, and both ends of the fifth lead screw 524 are installed on the lower surface of the micro-moving plate 46 through a support seat. The output shaft of the fifth motor 523 is fixedly connected to one end of the fifth lead screw 524, and the fifth motor 523 is fixedly installed on the micro-moving plate 46. The lower surface of the second adjustment plate 522 is fixedly connected to the second quenching transformer 14 through a flange. Through the flange connection design, the angle of the second quenching inductor 16 on the second quenching transformer 14 can be adjusted. In addition, a connecting support rod is fixedly installed on one side of the micro-moving plate 46 through a screw. The lower end of the connecting support rod is fixedly connected to the quenching liquid delivery pipe 17. The connecting support rod connected by a screw facilitates adjusting the position of the quenching liquid delivery pipe 17, thereby adjusting the distance between the quenching liquid nozzle 19 and the quenching inductor.The first quenching inductor 15 on the first quenching transformer 13, the second quenching inductor 16 on the second quenching transformer 14, and the quenching liquid spray head 19 on the quenching liquid delivery pipe 17 are all horizontally oriented towards the center of the turntable assembly 6, facilitating the quenching of the side wall track of the workpiece 20.

[0044] A control method for a double-transformer independent circuit collaborative deep hardening layer quenching system specifically includes the following steps:

[0045] Step 1: Clamp the workpiece 20 to be quenched on the fixture of the turntable assembly 6, and control the horizontal movement component 2 and the lifting component 3 of the gantry quenching machine tool through the azimuth button of the quenching liquid delivery pipe 17, so that the first quenching inductor 15, the second quenching inductor 16, and the quenching liquid spray head 19 move to the initial working position;

[0046] Step 2: Start the turntable assembly 6 to drive the workpiece 20 to rotate at a constant speed, and drive the first quenching inductor 15 and the second quenching inductor 16 to fine-tune to a preset gap along the side wall track of the workpiece 20 through the micro-movement component 4. Use the spacing adjustment component 5 to adjust the spacing between the first quenching transformer 13 and the second quenching transformer 14 respectively, so that the first quenching inductor 15 and the second quenching inductor 16 form a preset overlapping area with the heating area on the surface of the workpiece 20;

[0047] Step 3: Start the first main transformer 7 and the second main transformer 8, and set different frequency and power parameters through the operation buttons of the first intermediate frequency cabinet 9 and the second intermediate frequency cabinet 10. The first independent circuit uses high-frequency current, and the first quenching inductor 15 quickly preheats the surface layer of the workpiece 20. The second independent circuit uses intermediate-frequency current, and the second quenching inductor 16 deeply penetrates and heats the sub-surface layer of the workpiece 20. At the same time, control the quenching liquid spray head 19 to spray quenching liquid behind the heating area through the quenching liquid delivery pipe 17;

[0048] Step 4: After completing the preset quenching stroke, turn off the power supplies of the first main transformer 7 and the second main transformer 8, and stop the quenching liquid spraying of the quenching liquid spray head 19; Reset the first quenching inductor 15, the second quenching inductor 16, and the quenching liquid spray head 19 to a safe position through the horizontal movement component 2 and the lifting component 3, and control the turntable assembly 6 to stop rotating and unload the workpiece 20.

[0049] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that without departing from the spirit and scope defined by the claims of the present application, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features.

Claims

1. A double-transformer independent circuit collaborative deep hardened layer quenching system, characterized in that, Including a first main transformer (7), a second main transformer (8), a first intermediate frequency cabinet (9), a second intermediate frequency cabinet (10), a first capacitor (11), a second capacitor (12), a first quenching transformer (13), a second quenching transformer (14), a first quenching inductor (15), a second quenching inductor (16), a quenching liquid delivery pipe (17), an integrated operation handle (18) and a gantry quenching machine tool, wherein, the first main transformer (7), the first intermediate frequency cabinet (9), the first capacitor (11), the first quenching transformer (13) and the first quenching inductor (15) are connected in series in sequence to form a first independent circuit, the second main transformer (8), the second intermediate frequency cabinet (10), the second capacitor (12), the second quenching transformer (14) and the second quenching inductor (16) are connected in series in sequence to form a second independent circuit, the first capacitor (11), the first quenching transformer (13), the second capacitor (12) and the second quenching transformer (14) are all installed on the gantry quenching machine tool, a quenching liquid delivery pipe (17) is further installed on the gantry quenching machine tool, the quenching liquid delivery pipe (17) is externally connected to a quenching liquid device, a quenching liquid spray head (19) is arranged at the end of the quenching liquid delivery pipe (17), the first quenching inductor (15), the second quenching inductor (16) and the quenching liquid spray head (19) are arranged side by side close to each other in sequence along the same horizontal plane and have the same orientation, and an azimuth button for controlling the moving direction of the gantry quenching machine tool, operation buttons for the first intermediate frequency cabinet (9) and the second intermediate frequency cabinet (10), and a control valve switch button on the quenching liquid delivery pipe (17) are arranged on the integrated operation handle (18).

2. The double-transformer independent circuit collaborative deep hardened layer quenching system according to claim 1, wherein The gantry-type quenching machine tool comprises a gantry support (1), a horizontal moving component (2), a lifting component (3), a micro-motion component (4), a spacing adjustment component (5) and a turntable assembly (6); horizontal slide rails (102) are fixedly provided on both sides of a crossbeam (101) at the top of the gantry support (1) along its length direction; the horizontal moving component (2) is slidably mounted on the horizontal slide rails (102); the first capacitor (11) and the second capacitor (12) are both fixedly mounted on the horizontal moving component (2); a vertically arranged lifting component (3) is mounted on the horizontal moving component (2); a micro-motion component (4) is mounted at the bottom of the lifting component (3); a spacing adjustment component (5) is mounted below the micro-motion component (4); the first quenching transformer (13), the second quenching transformer (14) and the quenching liquid delivery pipe (17) are all mounted on the spacing adjustment component (5). A turntable assembly (6) is rotatably mounted just below the upper part of the gantry support (1) in the horizontal direction. The turntable assembly (6) is clamped and positioned on the table of the workpiece (20) by a fixture and drives the workpiece (20) to rotate. The horizontal moving component (2) can drive the first quenching sensor (15), the second quenching sensor (16) and the quenching liquid nozzle (19) to move horizontally along the crossbeam (101). The lifting component (3) can drive the first quenching sensor (15), the second quenching sensor (16) and the quenching liquid nozzle (19) to move vertically. The micro-motion component (4) can drive the first quenching sensor (15), the second quenching sensor (16) and the quenching liquid nozzle (19) to approach the side wall track of the workpiece (20). The spacing adjustment component (5) can adjust the spacing between the first quenching transformer (13) and the second quenching transformer (14).

3. The double-transformer independent circuit collaborative deep hardening layer quenching system according to claim 2, wherein, The horizontal moving assembly (2) comprises a first slide (21), a second slide (22), a first motor (23), a driving gear (24) and a long rack (25); the first slide (21) and the second slide (22) are respectively slidably mounted on the horizontal slide rails (102) on the two sides of the crossbeam (101) through sliders; the first slide (21) is fixedly mounted with a first motor (23); the output shaft of the first motor (23) is fixedly provided with a driving gear (24); the crossbeam (101) is located at the first A long rack (25) is fixedly provided on the side surface of one side of the slide (21) along its length direction; the driving gear (24) is meshingly connected with the long rack (25) for transmission; a mounting platform (26) is fixedly provided between the first slide (21) and the second slide (22); the mounting platform (26) is located above the crossbeam (101) and the first capacitor (11) and the second capacitor (12) are fixedly installed on the top of the mounting platform; and the lifting assembly (3) is connected to the first slide (21) and the second slide (22).

4. The double-transformer independent circuit collaborative deep hardened layer quenching system according to claim 3, characterized in that, The lifting assembly (3) includes a driving member (31) and a guiding member (32). The driving member (31) and the guiding member (32) are symmetrically distributed on both sides of the cross beam (101). The driving member (31) is connected to the first sliding table (21), and the guiding member (32) is connected to the second sliding table (22). The driving member (31) includes a first fixed platform (311), a driving vertical support (312), a first vertical slide rail (313), a second motor (314), a first lead screw (315), and a first nut seat (316). The first fixed platform (311) is fixedly connected to the first sliding table (21). A first nut seat (316) is fixedly provided on the outer side surface of the first fixed platform (311). The first nut seat (316) is threadedly sleeved on the first lead screw (315). The two ends of the first lead screw (315) are vertically installed on the driving vertical support (312) through bearing seats. A second motor (314) is fixedly installed at the top of the driving vertical support (312). The output shaft of the second motor (314) is fixedly connected to the top end of the first lead screw (315). A first vertical slide rail (313) is fixedly installed on the side surface of the driving vertical support (312) facing the first fixed platform (311) along the axial direction of the first lead screw (315). The first fixed platform (311) is slidably installed on the first vertical slide rail (313) through a slider. The guiding member (32) includes a second fixed platform (321), a guiding vertical support (322), a second vertical slide rail (323), a guiding rod (324), and a sliding seat (325). The second fixed platform (321) is fixedly connected to the second sliding table (22). A sliding seat (325) is fixedly provided on the outer side surface of the second fixed platform (321). The sliding seat (325) is slidably sleeved on the guiding rod (324). The guiding rod (324) is vertically fixed on the guiding vertical support (322). A second vertical slide rail (323) is fixedly installed on the side surface of the guiding vertical support (322) facing the second fixed platform (321) along the axial direction of the guiding rod (324). The second fixed platform (321) is slidably installed on the second vertical slide rail (323) through a slider. The fine movement assembly (4) is connected to the bottoms of the driving vertical support (312) and the guiding vertical support (322).

5. The double-transformer independent circuit collaborative deep hardened layer quenching system according to claim 4, wherein, The fine movement assembly (4) includes a connecting plate (41), a short slide rail (42), a third motor (43), a second lead screw (44), a second nut seat (45), and a fine movement plate (46). The upper surface of the connecting plate (41) is fixedly connected to the bottom of the driving vertical bracket (312) and the guiding vertical bracket (322). Along the axial direction of the horizontal slide rail (102), a short slide rail (42) is fixedly provided on the lower surface of the connecting plate (41). The fine movement plate (46) is slidably mounted on the short slide rail (42) through a slider. A second nut seat (45) is fixedly provided on the upper surface of the fine movement plate (46). The second nut seat (45) is threadedly sleeved on the second lead screw (44). The axial direction of the second lead screw (44) is consistent with the axial direction of the short slide rail (42), and both ends of the second lead screw (44) are mounted on the lower surface of the connecting plate (41) through bearing seats. The output shaft of the third motor (43) is fixedly connected to one end of the second lead screw (44). The third motor (43) is fixedly mounted on the connecting plate (41). The distance adjustment assembly (5) is provided on the lower surface of the fine movement plate (46).

6. The double-transformer independent circuit collaborative deep hardening layer quenching system according to claim 5, wherein, The distance adjustment assembly (5) includes a first adjustment member (51) and a second adjustment member (52). The length direction of the fine movement plate (46) extends horizontally along the direction perpendicular to the axial direction of the short slide rail (42). The first adjustment member (51) and the second adjustment member (52) are symmetrically arranged along the length direction of the fine movement plate (46). The first quenching transformer (13) is mounted on the first adjustment member (51), and the second quenching transformer (14) is mounted on the second adjustment member (52). The first adjustment member (51) includes a first adjustment slide rail (511), a first adjustment plate (512), a fourth motor (513), a fourth lead screw (514), and a fourth nut seat (515). The first adjustment slide rail (511) is fixedly provided on the lower surface of the fine movement plate (46), and the axial direction of the first adjustment slide rail (511) is perpendicular to the axial direction of the short slide rail (42). The first adjustment plate (512) is slidably mounted on the first adjustment slide rail (511) through a slider. A fourth nut seat (515) is fixedly provided on the upper surface of the first adjustment plate (512). The fourth nut seat (515) is threadedly sleeved on the fourth lead screw (514). The axial direction of the fourth lead screw (514) is consistent with the axial direction of the first adjustment slide rail (511), and both ends of the fourth lead screw (514) are mounted on the lower surface of the fine movement plate (46) through bearing seats. The output shaft of the fourth motor (513) is fixedly connected to one end of the fourth lead screw (514). The fourth motor (513) is fixedly mounted on the fine movement plate (46). The lower surface of the first adjustment plate (512) is fixedly connected to the first quenching transformer (13) through a flange. The second adjusting member (52) includes a second adjusting slide rail (521), a second adjusting plate (522), a fifth motor (523), a fifth lead screw (524) and a fifth nut seat (525). The second adjusting slide rail (521) is fixedly arranged on the lower surface of the micro-moving plate (46), and the axial direction of the second adjusting slide rail (521) is perpendicular to the axial direction of the short slide rail (42). The second adjusting plate (522) is slidably mounted on the second adjusting slide rail (521) through a slider. A fifth nut seat (525) is fixedly arranged on the upper surface of the second adjusting plate (522). The fifth nut seat (525) is threadedly sleeved on the fifth lead screw (524). The axial direction of the fifth lead screw (524) is consistent with the axial direction of the second adjusting slide rail (521), and both ends of the fifth lead screw (524) are mounted on the lower surface of the micro-moving plate (46) through support seats. The output shaft of the fifth motor (523) is fixedly connected to one end of the fifth lead screw (524). The fifth motor (523) is fixedly mounted on the micro-moving plate (46). The lower surface of the second adjusting plate (522) is fixedly connected to the second quenching transformer (14) through a flange.

7. The double-transformer independent circuit collaborative deep hardened layer quenching system according to claim 6, wherein, A connecting support rod is fixedly mounted on one side of the micro-moving plate (46) by screws. The lower end of the connecting support rod is fixedly connected to the quenching liquid delivery pipe (17). The first quenching inductor (15) on the first quenching transformer (13), the second quenching inductor (16) on the second quenching transformer (14), and the quenching liquid spray head (19) on the quenching liquid delivery pipe (17) are all horizontally oriented towards the center of the turntable assembly (6).

8. The double-transformer independent circuit collaborative deep hardening layer quenching system according to claim 1, wherein Both the first quenching transformer (13) and the second quenching transformer (14) adopt a single-turn ratio structure.

9. A control method for a double-transformer independent circuit collaborative deep hardened layer quenching system according to any one of claims 1-7, characterized in that, Specifically, it includes the following steps: S1. Clamp the workpiece (20) to be quenched on the fixture of the turntable assembly (6). Control the horizontal movement assembly (2) and the lifting assembly (3) of the gantry quenching machine tool through the azimuth button of the integrated operation handle (18) to move the first quenching inductor (15), the second quenching inductor (16) and the quenching liquid spray head (19) to the initial working position. S2. Start the turntable assembly (6) to drive the workpiece (20) to rotate at a constant speed. Drive the first quenching inductor (15) and the second quenching inductor (16) to finely adjust along the side wall track of the workpiece (20) to a preset gap through the micro-moving assembly (4). Use the spacing adjusting assembly (5) to respectively adjust the spacing between the first quenching transformer (13) and the second quenching transformer (14) so that the first quenching inductor (15) and the second quenching inductor (16) form a preset overlapping area with the heating area on the surface of the workpiece (20). S3. Start the first main transformer (7) and the second main transformer (8), set different frequency and power parameters through the operation buttons of the first intermediate frequency cabinet (9) and the second intermediate frequency cabinet (10). The first independent circuit uses high-frequency current, and the surface layer of the workpiece (20) is rapidly preheated by the first quenching inductor (15). The second independent circuit uses intermediate-frequency current, and the subsurface layer of the workpiece (20) is deeply penetrated and heated by the second quenching inductor (16). At the same time, control the quenching liquid nozzle (19) to spray quenching liquid behind the heating area through the integrated operation handle (18). S4. After completing the preset quenching stroke, turn off the power supplies of the first main transformer (7) and the second main transformer (8), and stop the quenching liquid spraying of the quenching liquid nozzle (19). Reset the first quenching inductor (15), the second quenching inductor (16) and the quenching liquid nozzle (19) to the safe position through the horizontal movement assembly (2) and the lifting assembly (3), control the turntable assembly (6) to stop rotating and unload the workpiece (20).

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