Induction quenching system and quenching method for follow-up self-adjusting linear guide rail

Abstract

The application discloses an induction quenching system and a quenching method for a self-adjustable linear guide rail, and belongs to the technical field of quenching processing. The induction quenching system comprises an inductor, a first fixing device, a second fixing device and a third fixing device. The slide included in the second fixing device can apply a pulling force to the linear guide rail. The angle adjusting module included in the third fixing device can adjust the angle between the inductor and the linear guide rail. The self-adjusting module is controlled by a servo system, a displacement sensor and a servo motor to adjust the distance between the inductor and the linear guide rail. The induction quenching system and the quenching method for the self-adjustable linear guide rail can apply a pulling force to the linear guide rail, and can keep the inner side surface of the inductor parallel to the side surface of the linear guide rail during the induction quenching process. The distance between the inductor and the linear guide rail can be automatically adjusted during the quenching process, so that the induction quenching quality of the linear guide rail is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of quenching processing, and particularly relates to an inductive quenching system and method for a self-adjusting linear guide rail. BACKGROUND

[0002] Quenching is an important processing technology for improving the mechanical properties of workpieces. As one of quenching technologies, inductive quenching uses electromagnetic induction to generate eddy current in the workpiece to heat the workpiece.

[0003] Linear guide rails are important functional components on machine tools and are used for movement positioning and guiding of machine tools. The contact surfaces of the guide rail surface and the rolling components bear a large pressure during use, and thus the contact surfaces are required to have high hardness. Since the guide rail is a high-precision product, it has a high heavy load capacity, and has high requirements for the parallelism and flatness precision of installation. In order to ensure that the linear guide rail has good comprehensive mechanical properties and installation precision, the inductive quenching method is the most ideal heat treatment method.

[0004] During inductive quenching, due to the skin effect and proximity effect of the induction current, the side surface of the linear guide rail close to the inner surface of the inductor is more easily heated to a high temperature, and the side surface of the linear guide rail far from the inner surface of the inductor has a lower temperature, thereby causing the temperature, hardened layer and mechanical properties of the two side surfaces to be uneven, resulting in the linear guide rail being bent and deformed along the guide rail axis direction due to the different heating temperatures and hardened layer depths of the two side surfaces, and affecting the quenching quality, shape precision and use effect of the linear guide rail.

[0005] The inductor may have position and shape errors during processing, and a certain position deviation may occur during fixing of the inductor on the machine tool slide. The processing and fixing deviations will affect the distance between the inductor and the two side surfaces of the linear guide rail, causing the distance from the two side surfaces of the linear guide rail to the inner surface of the inductor to be inconsistent, and finally causing the linear guide rail to be bent and deformed during inductive quenching. At present, the inductive quenching bending deformation of the linear guide rail is one of the main problems that plague the industry.

[0006] Therefore, a quenching system and method are needed that can adjust the angle and distance between the inductor and the workpiece to be processed, ensure that the angle and distance between the inductor and the linear guide rail are maintained at a constant value during quenching, and ensure the quenching quality of the linear guide rail. SUMMARY

[0007] In view of the deficiencies in the related art, the purpose of the present application is to provide an inductive quenching system and method for a self-adjusting linear guide rail to solve the problems raised in the background art.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0009] An induction quenching system for a servo-adjustable linear guide rail, comprising:

[0010] An inductor, which is electrically connected with an induction power supply of the quenching machine tool;

[0011] A first fixing device, which is arranged on the guide rail of the quenching machine tool and is in sliding connection with the guide rail of the quenching machine tool;

[0012] A second fixing device, which is arranged on the guide rail of the quenching machine tool and is in sliding connection with the guide rail of the quenching machine tool;

[0013] A third fixing device, which is fixedly connected on the worktable of the quenching machine tool and can slide along the guide rail of the quenching machine tool with the worktable of the quenching machine tool, and is provided with an angle adjustment module and a self-adjustment module connected with the inductor, respectively used to adjust the angle and distance between the inductor and the linear guide rail.

[0014] In some embodiments, the first fixing device comprises a first base, a first fixing block and a first sliding block; the lower end of the first base is provided with a groove, the shape of which is adapted to the guide rail of the quenching machine tool, the first base is in sliding connection with the guide rail of the quenching machine tool, and the two sides of the groove of the first base are respectively provided with a first oil cylinder, which is located inside the first base and used to clamp the guide rail of the quenching machine tool; the first fixing block is arranged on the first base and is fixedly connected with the first base through screws and pins; the first sliding block is arranged on the first base and is in sliding connection with the first base, the first fixing block and the first sliding block are fixedly connected through a second oil cylinder, and the second oil cylinder is used to drive the first sliding block to move towards the first fixing block to clamp the linear guide rail.

[0015] In some embodiments, the second fixing device comprises a second base, a sliding seat, a second fixing block and a second sliding block; the lower end of the second base is provided with a groove, the shape of which is adapted to the guide rail of the quenching machine tool, the second base is in sliding connection with the guide rail of the quenching machine tool, and the two sides of the groove of the second base are respectively provided with a third oil cylinder, which is located inside the second base and used to clamp the guide rail of the quenching machine tool; the sliding seat is arranged on the second base and is in sliding connection with the second base, and a fifth oil cylinder is arranged between the sliding seat and the second base, which is used to drive the sliding seat to slide on the second base; the second fixing block is arranged on the sliding seat and is fixedly connected with the sliding seat through screws and pins; the second sliding block is arranged on the sliding seat and is in sliding connection with the sliding seat, the second fixing block and the second sliding block are connected through a fourth oil cylinder, and the fourth oil cylinder is used to drive the second sliding block to move towards the second fixing block to clamp the linear guide rail.

[0016] In some embodiments, dovetail grooves are arranged on the first base and the slide, dovetail bosses are arranged on the lower ends of the first slider and the second slider, the dovetail grooves and the dovetail bosses form dovetail structures, the first slider is connected to the first base in sliding mode through the dovetail structures, and the second slider is connected to the slide in sliding mode through the dovetail structures.

[0017] In some embodiments, the third fixing device further comprises a sensor base, and the angle adjusting module and the self-adjusting module are arranged on the sensor base.

[0018] In some embodiments, the angle adjusting module comprises an axial angle adjusting block and a longitudinal angle adjusting block, the axial angle adjusting block is arranged on the sensor base and is rotationally connected to the sensor base, and is used to adjust the angle of the sensor in the axial direction of the linear guide rail; and the longitudinal angle adjusting block is arranged on the axial angle adjusting block and is rotationally connected to the axial angle adjusting block, and is used to adjust the angle of the sensor in the longitudinal direction of the linear guide rail.

[0019] In some embodiments, the self-adjusting module comprises a servo motor, a displacement sensor and a servo system, the servo motor is arranged on the longitudinal angle adjusting block, and the sensor is connected to the output shaft of the servo motor; the displacement sensor is arranged on the third fixing device, and the displacement sensor is in contact with the side surface of the linear guide rail through a spring; and the servo motor and the displacement sensor are electrically connected to the servo system.

[0020] In some embodiments, the inductive quenching system for the self-adjusting linear guide rail further comprises a hydraulic system, and the first oil cylinder, the second oil cylinder, the third oil cylinder, the fourth oil cylinder and the fifth oil cylinder are connected to the hydraulic system through hydraulic pipelines.

[0021] In some embodiments, the inductive quenching system for the self-adjusting linear guide rail further comprises a water jet cooler arranged on the third fixing device, and the water jet cooler is connected to the cooling water supply device through a water supply pipeline.

[0022] The application further provides a quenching method for a linear guide rail, which adopts the inductive quenching system for the self-adjusting linear guide rail according to any one of the technical solutions and comprises the following steps:

[0023] The quenching machine tool guide rail clamping step: according to the length of the linear guide rail, the first fixing device and the second fixing device are slid to the set positions on the quenching machine tool guide rail, the first oil cylinder and the third oil cylinder are provided with oil pressure by the hydraulic system, and the quenching machine tool guide rail is clamped;

[0024] Linear guide clamping step: one end of the linear guide is placed between the first slider and the first fixed block, and the other end is placed between the second slider and the second fixed block, the hydraulic system provides oil pressure to the second oil cylinder to move the first slider to the first fixed block, and clamps one end of the linear guide; the hydraulic system provides oil pressure to the third oil cylinder to move the second slider to the second fixed block, and clamps the other end of the linear guide;

[0025] Linear guide adjustment step: the fifth oil cylinder is provided with oil pressure by the hydraulic system, the slide is driven by the fifth oil cylinder to slide on the second base, and the second slider and the second fixed block of the linear guide are moved with the slide to apply tension to the linear guide;

[0026] Angle adjustment step: the third fixing device is fixed on the workbench of the quenching machine tool, and the workbench is adjusted to a position close to the left end of the linear guide through the quenching machine tool; the vertical parallelism of the inductor and the side surface of the linear guide is adjusted by rotating the longitudinal angle adjustment block, and the axial parallelism of the inductor and the side surface of the linear guide is adjusted by rotating the axial angle adjustment block;

[0027] Distance adjustment step: the design value of the width of the linear guide and the distance between the side surface of the linear guide and the inner side surface of the inductor is input into the servo system; the displacement sensor is adjusted, and the contact between the displacement sensor and the side surface of the linear guide is maintained by the spring; the servo system is started, and the distance between the inner side surface of the inductor and the side surface of the linear guide is adjusted by the servo motor according to the input data;

[0028] Quenching step: the quenching machine tool is started, the inductor performs induction quenching on the linear guide, and the heating part of the linear guide is sprayed and cooled by the water spray cooler; when the third fixing device is driven by the workbench of the quenching machine tool to move along the linear guide, the displacement sensor measures the distance change between the two inner side surfaces of the inductor and the two side surfaces of the linear guide, and feeds back the measured value to the servo system; the servo motor is controlled by the servo system, and the inductor is driven by the servo motor to adjust the distance between the inner side surface of the inductor and the side surface of the linear guide.

[0029] Compared with the prior art, the beneficial effects of the present application are:

[0030] 1、The induction quenching system for the linear guide provided by the present application includes an angle adjustment module and a self-adjusting module, which can adjust the angle and distance between the inductor and the linear guide, and the displacement sensor in the self-adjusting module cooperates with the servo motor to adjust the distance between the inductor and the linear guide in real time during induction quenching, thereby improving the quenching quality and effect of the linear guide;

[0031] 2. The second fixing device in the induction hardening system for the self-adjustable linear guide provided by the present invention includes a slide. During the induction hardening process of the linear guide, the slide can cooperate with the fifth oil cylinder to continuously apply tension to the linear guide, offsetting the thermal stress and phase change stress during the hardening process, thereby further improving the straightness of the linear guide after induction hardening and ensuring its induction hardening quality and performance.

[0032] 3. The angle adjustment module of the induction hardening system for the self-adjustable linear guide provided by the present invention comprises an axial angle adjustment block and a longitudinal angle adjustment block. The axial angle adjustment block is rotatably connected to the inductor base, and the longitudinal angle adjustment block is rotatably connected to the axial angle adjustment block. The parallelism of the linear guide can be adjusted by rotation, and the system has the advantages of simple structure and ease of use.

[0033] 4. The induction hardening system for the self-adjustable linear guide provided by the present invention includes a self-adjusting module. The displacement sensor in the self-adjusting module maintains contact with the side of the linear guide through a spring, and has high measurement accuracy and strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0035] Figure 1 This is a schematic structural diagram of an embodiment of an induction hardening system for a self-adjustable linear guide rail according to the present invention;

[0036] Figure 2 for Figure 1 A schematic structural diagram of the first fixing device;

[0037] Figure 3 for Figure 1 A schematic structural diagram of the second fixing device;

[0038] Figure 4 for Figure 1 a top view of the second fixing device;

[0039] Figure 5 for Figure 1 A schematic structural diagram of the third fixing device;

[0040] Figure 6 for Figure 1 A top view of the third fixing device in FIG.

[0041] In the picture:

[0042] 1, quenching machine guide rail; 2, first fixing device; 3, second fixing device; 4, third fixing device; 5, inductor; 6, water jet cooler; 7, linear guide rail; 8, hydraulic system; 21, first base; 22, first oil cylinder; 23, first fixed block; 24, first sliding block; 25, second oil cylinder; 31, second base; 32, third oil cylinder; 33, sliding seat; 34, fifth oil cylinder; 35, second fixed block; 36, second sliding block; 37, fourth oil cylinder; 41, angle adjustment module; 42, self-adjusting module; 43, inductor base; 51, induction power supply; 61, cooling water supply device; 411, axial angle adjustment block; 412, longitudinal angle adjustment block; 421, servo motor; 422, displacement sensor; 423, servo system. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Embodiment 1

[0047] Referring to the accompanying drawings Figures 1 to 6 An illustrative embodiment of the inductive quenching system for the self-adjusting linear guide rail is shown, which comprises an inductor 5, a first fixing device 2, a second fixing device 3 and a third fixing device 4.

[0048] Referring to the accompanying drawings Figures 1 to 6The quenching machine guide rail 1 is provided with two, and the two quenching machine guide rails 1 are arranged in parallel; the first fixing device 2 and the second fixing device 3 are in sliding connection with the quenching machine guide rail 1, so as to adapt to linear guide rails 7 of different lengths; the third fixing device 4 is fixedly connected on the quenching machine workbench and can slide along the quenching machine guide rail 1 with the quenching machine workbench, and the third fixing device 4 is provided with an angle adjustment module 41 and a self-adjustment module 42 connected with the inductor 5, respectively used to adjust the angle and distance between the inductor 5 and the linear guide rail 7; the inductor 5 is in electrical connection with the inductive power supply 51 of the quenching machine; the water spray cooler 6 is arranged on the third fixing device 4 and sprays water to cool the linear guide rail 7 according to the process requirement, and the water spray cooler 6 is connected with the cooling water supply device 61 through a water supply pipeline.

[0049] Referring to the accompanying drawings Figure 2 The first fixing device 2 comprises a first base 21, a first fixing block 23 and a first sliding block 24; the first base 21 is in sliding connection with the quenching machine guide rail 1, and the lower end of the first base 21 is provided with two grooves, which are adapted to the shapes of the two quenching machine guide rails 1, so that the first fixing device 2 is more stable when sliding on the quenching machine guide rail 1; the two grooves of the first base 21 are respectively provided with first oil cylinders 22 on the two sides, which are located inside the first base 21 and used to clamp the quenching machine guide rail 1 and lock the position of the first fixing device 2; the first fixing block 23 is arranged on the first base 21 and fixedly connected with the first base 21 through screws and pins; the first sliding block 24 is arranged on the first base 21, and the first base 21 is provided with a dovetail groove, and the lower end of the first sliding block 24 is provided with a dovetail boss matched with the dovetail groove, so that the dovetail groove and the dovetail boss form a dovetail structure, and the first sliding block 24 is in sliding connection with the first base 21 through the dovetail structure; the first fixing block 23 and the first sliding block 24 are fixedly connected through a second oil cylinder 25, which is used to drive the first sliding block 24 to move towards the first fixing block 23 to clamp the linear guide rail 7.

[0050] Referring to the accompanying drawings Figure 3 and Figure 4, the second fixing device 3 comprises a second base 31, a sliding base 33, a second fixing block 35 and a second sliding block 36; the second base 31 is in sliding connection with the quenching machine tool guide rail 1, and two recesses are arranged at the lower end of the second base 31 and are shaped to be adapted to the two quenching machine tool guide rails 1, so that the second fixing device 3 is more stable when sliding on the quenching machine tool guide rail 1; third oil cylinders 32 are arranged at the two sides of the two recesses of the second base 31, and the third oil cylinders 32 are located inside the second base 31 and are used to clamp the quenching machine tool guide rail 1 and lock the position of the second fixing device 3; the sliding base 33 is arranged on the second base 31 and is in sliding connection with the second base 31, and a fifth oil cylinder 34 is arranged between the sliding base 33 and the second base 31; the second fixing block 35 is arranged on the sliding base 33 and is fixedly connected with the sliding base 33 through screws and pins; the second sliding block 36 is arranged on the sliding base 33, the sliding base 33 is provided with a dovetail groove, the lower end of the second sliding block 36 is provided with a dovetail boss matched with the dovetail groove, the dovetail groove and the dovetail boss form a dovetail structure, the second sliding block 36 is in sliding connection with the sliding base 33 through the dovetail structure, the second fixing block 35 and the second sliding block 36 are connected through a fourth oil cylinder 37, and the fourth oil cylinder 37 is used to drive the second sliding block 36 to move towards the second fixing block 35 to clamp the linear guide rail 7; when the fifth oil cylinder 34 drives the sliding base 33 to slide on the second base 31, the second sliding block 36 and the second fixing block 35 clamping the linear guide rail 7 move accordingly to exert a pulling force on the linear guide rail 7, so as to offset the thermal stress and phase change stress in the quenching process, further improve the straightness of the linear guide rail 7 after induction quenching, and ensure the quality and use performance of the induction quenching.

[0051] Referring to the accompanying drawings Figure 5 and Figure 6 The third fixing device 4 comprises an inductor base 43, an angle adjusting module 41 and a self-adjusting module 42, and the angle adjusting module 41 and the self-adjusting module 42 are both arranged on the inductor base 43. The angle adjusting module 41 comprises an axial angle adjusting block 411 and a longitudinal angle adjusting block 412; the axial angle adjusting block 411 is arranged on the inductor base 43 and is in rotary connection with the inductor base 43, and is used to adjust the angle of the inductor 5 in the axial direction of the linear guide rail 7; the longitudinal angle adjusting block 412 is arranged on the axial angle adjusting block 411 and is in rotary connection with the axial angle adjusting block 411, and is used to adjust the angle of the inductor 5 in the longitudinal direction of the linear guide rail 7; the self-adjusting module 42 comprises a servo motor 421, a displacement sensor 422 and a servo system 423; the servo motor 421 is arranged on the longitudinal angle adjusting block 412, and the inductor 5 is connected with the output shaft of the servo motor 421; the displacement sensor 422 is arranged on the third fixing device 4 and is in contact with the side surface of the linear guide rail 7 through a spring; the servo motor 421 and the displacement sensor 422 are electrically connected with the servo system 423.

[0052] The induction quenching system for the followable self-adjusting linear guide rail further comprises a hydraulic system 8, and the first oil cylinder 22, the second oil cylinder 25, the third oil cylinder 32, the fourth oil cylinder 37 and the fifth oil cylinder 34 are connected with the hydraulic system 8 through hydraulic pipelines.

[0053] The working principle of the embodiment will be described below with reference to the accompanying drawings Figures 1 to 6 The working principle of the embodiment will be described below with reference to the accompanying drawings

[0054] Firstly, the first fixing device 2 and the second fixing device 3 are slid to the set positions on the quenching machine guide rail 1 according to the length of the linear guide rail 7, and the first oil cylinder 22 and the third oil cylinder 32 are provided with oil pressure by the hydraulic system 8, so that the piston rods of the first oil cylinder 22 and the third oil cylinder 32 are extended to clamp the quenching machine guide rail 1; then one end of the linear guide rail 7 is placed between the first sliding block 24 and the first fixed block 23, and the other end is placed between the second sliding block 36 and the second fixed block 35, and the second oil cylinder 25 is provided with oil pressure by the hydraulic system 8, so that the piston rod of the second oil cylinder 25 is retracted to move the first sliding block 24 to the first fixed block 23 to clamp one end of the linear guide rail 7; the third oil cylinder 32 is provided with oil pressure by the hydraulic system 8, so that the piston rod of the third oil cylinder 32 is retracted to move the second sliding block 36 to the second fixed block 35 to clamp the other end of the linear guide rail 7; and the fifth oil cylinder 34 is provided with oil pressure by the hydraulic system 8, so that the sliding seat 33 slides on the second base 31 driven by the fifth oil cylinder 34, and the second sliding block 36 and the second fixed block 35 of the linear guide rail 7 move with the sliding seat 33, and according to the process requirements, a pulling force is applied to the linear guide rail 7 to offset the thermal stress and phase change stress in the quenching process, and further improve the straightness of the linear guide rail after quenching.

[0055] Then the third fixing device 4 is fixed on the workbench of the quenching machine, and the workbench is adjusted to a position close to the left end of the linear guide rail 7 by the quenching machine; the longitudinal angle adjusting block 412 is rotated to adjust the parallelism of the inductor 5 and the side surface of the linear guide rail 7 in the vertical direction, and the axial angle adjusting block 411 is rotated to adjust the parallelism of the inductor 5 and the side surface of the linear guide rail 7 in the axial direction; the same adjustment is performed on the inductors 5 on both sides of the linear guide rail 7 to ensure that the inductors 5 on both sides are parallel to the side surface of the linear guide rail 7 in the vertical and axial directions.

[0056] Then the width of the linear guide rail 7 and the distance between the side surface of the linear guide rail 7 and the inner side surface of the inductor 5 are input into the servo system 423; the displacement sensor 422 is adjusted and maintained in contact with the side surface of the linear guide rail 7 by a spring; the servo system 423 is started, and the distance between the inner side surface of the inductor 5 and the side surface of the linear guide rail 7 is adjusted by the servo motor 421 according to the input data to ensure that the distance between the two side surfaces of the linear guide rail 7 and the inner side surfaces of the corresponding inductors 5 is equal.

[0057] The quenching machine tool is started, the inductor 5 inductively quenches the linear guide rail 7, and the heated part of the linear guide rail 7 is sprayed and cooled by the water spray cooler 6; when the third fixing device 4 is driven by the workbench of the quenching machine tool to move along the linear guide rail 7, the distance change between the two inner sides of the inductor 5 and the two sides of the linear guide rail 7 is measured by the displacement sensor 422, and the measured value is fed back to the servo system 423; the servo motor 421 is controlled by the servo system 423, and the inductor 5 is driven by the servo motor 421 to adjust the distance between the inner side of the inductor 5 and the side of the linear guide rail 7, so that the distance between the inner side of the inductor 5 and the side of the linear guide rail 7 is maintained at a constant value during the inductive quenching process.

[0058] In the embodiment, the inductive quenching system for the followable self-adjusting linear guide rail can adjust the angle of the inductor, so that the inner side of the inductor is parallel to the side of the linear guide rail during the inductive quenching process, and the distance between the inductor and the linear guide rail can be automatically adjusted during the quenching process, the distance error occurring during the quenching process is adjusted in real time, and the inductive quenching quality of the linear guide rail is improved.

[0059] Embodiment 2:

[0060] The embodiment provides a quenching method for a linear guide rail, and adopts the inductive quenching system for the followable self-adjusting linear guide rail in embodiment 1, and includes the following steps.

[0061] The quenching machine tool guide rail clamping step: the first fixing device 2 and the second fixing device 3 are slid to the set position on the quenching machine tool guide rail 1 according to the length of the linear guide rail 7, and the first oil cylinder 22 and the third oil cylinder 32 are provided with oil pressure by the hydraulic system 8 to clamp the quenching machine tool guide rail 1.

[0062] The linear guide rail clamping step: one end of the linear guide rail 7 is placed between the first sliding block 24 and the first fixed block 23, and the other end is placed between the second sliding block 36 and the second fixed block 35, the first sliding block 24 is moved towards the first fixed block 23 by the second oil cylinder 25 provided with oil pressure by the hydraulic system 8, to clamp one end of the linear guide rail 7; the second sliding block 36 is moved towards the second fixed block 35 by the third oil cylinder 32 provided with oil pressure by the hydraulic system 8, to clamp the other end of the linear guide rail 7.

[0063] The linear guide rail adjusting step: the fifth oil cylinder 34 is provided with oil pressure by the hydraulic system 8, the sliding seat 33 is slid on the second base 31 by the fifth oil cylinder 34, and the second sliding block 36 and the second fixed block 35 of the linear guide rail 7 are moved with the sliding seat 33, to apply tension to the linear guide rail 7.

[0064] Angle adjustment step: fix the third fixing device 4 on the workbench of the quenching machine, and adjust the workbench to a position close to the left end of the linear guide rail 7 through the quenching machine; rotate the longitudinal angle adjustment block 412 to adjust the parallelism of the inductor 5 and the side surface of the linear guide rail 7 in the vertical direction, and rotate the axial angle adjustment block 411 to adjust the parallelism of the inductor 5 and the side surface of the linear guide rail 7 in the axial direction;

[0065] Distance adjustment step: input the design value of the width of the linear guide rail 7 and the distance between the side surface of the linear guide rail 7 and the inner side surface of the inductor 5 into the servo system 423; adjust the displacement sensor 422 and maintain its contact with the side surface of the linear guide rail 7 through the spring; start the servo system 423, and adjust the distance between the inner side surface of the inductor 5 and the side surface of the linear guide rail 7 through the servo motor 421 according to the input data by the servo system 423;

[0066] Quenching step: start the quenching machine, the inductor 5 performs induction quenching on the linear guide rail 7, and the water spray cooler 6 sprays cooling water on the heated part of the linear guide rail 7; when the workbench of the quenching machine drives the third fixing device 4 to move along the linear guide rail 7, the displacement sensor 422 measures the distance change between the two inner side surfaces of the inductor 5 and the two side surfaces of the linear guide rail 7, and feeds back the measurement value to the servo system 423; the servo system 423 controls the servo motor 421, and the servo motor 421 drives the inductor 5 to adjust the distance between the inner side surface of the inductor 5 and the side surface of the linear guide rail 7.

[0067] The quenching method of the linear guide rail provided in the embodiment adopts the induction quenching system for the self-adjusting linear guide rail in the embodiment 1, adjusts the angle between the inductor and the linear guide rail through the angle adjustment module, so that the inner side surface of the inductor and the side surface of the linear guide rail remain parallel during the quenching process; adjusts the distance between the inner side surface of the inductor and the side surface of the linear guide rail through the self-adjusting module, and during the quenching process, the distance change can be detected by the displacement sensor, and the distance can be automatically adjusted in real time, so as to ensure that the distance between the two inner side surfaces of the inductor and the side surface of the linear guide rail maintains a constant value during the induction quenching process; the second fixing device includes a sliding seat, which can continuously exert a pulling force on the linear guide rail through the fifth oil cylinder during the induction quenching of the linear guide rail, so as to offset the thermal stress and phase change stress during the quenching process, thereby further improving the straightness of the linear guide rail after the induction quenching, and ensuring the quality and use performance of the induction quenching.

[0068] Finally, it should be noted that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0069] The above examples are only used to illustrate the technical solutions of the present application but not to limit the present application; although the present application has been described in detail with reference to the preferred embodiments, it is understood by the person of ordinary skill in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range of the present application claimed.

Claims

1. An induction hardening system for a servo-adjustable linear guide rail, characterized by, The utility model relates to a quenching machine induction device, including: an inductor (5) electrically connected with an induction power supply (51) of a quenching machine; a first fixing device (2) arranged on a quenching machine guide rail (1) and slidably connected with the quenching machine guide rail (1); a second fixing device (3) arranged on the quenching machine guide rail (1) and slidably connected with the quenching machine guide rail (1); a third fixing device (4) fixedly connected with a workbench of the quenching machine and capable of sliding along the quenching machine guide rail (1) with the workbench, the third fixing device (4) being provided with an angle adjusting module (41) and a self-adjusting module (42) connected with the inductor (5) and used for adjusting the angle and distance between the inductor (5) and a linear guide rail (7), respectively; wherein the second fixing device (3) comprises a second base (31) and a sliding seat (33), the second base (31) being provided at a lower end with a groove in a shape adapted to the quenching machine guide rail (1), the second base (31) being slidably connected with the quenching machine guide rail (1), and the sliding seat (33) being arranged on the second base (31) and slidably connected with the second base (31); the angle adjusting module (41) comprising an axial angle adjusting block (411) and a longitudinal angle adjusting block (412), the axial angle adjusting block (411) being used for adjusting the axial angle between the inductor (5) and the linear guide rail (7), and the longitudinal angle adjusting block (412) being used for adjusting the longitudinal angle between the inductor (5) and the linear guide rail (7); the self-adjusting module (42) comprising a servo motor (421), a displacement sensor (422) and a servo system (423), the servo motor (421) being arranged on the longitudinal angle adjusting block (412) and having an output shaft connected with the inductor (5), the displacement sensor (422) being arranged on the third fixing device (4) and being in contact with a side surface of the linear guide rail (7) through a spring, and the servo motor (421) and the displacement sensor (422) being electrically connected with the servo system (423).

2. The induction quenching system for a follower self-aligning linear guide rail according to claim 1, wherein the first fixing device (2) comprising: a first base (21) provided at a lower end with a groove in a shape adapted to the quenching machine guide rail (1), the first base (21) being slidably connected with the quenching machine guide rail (1), and the groove of the first base (21) being provided at two sides with first oil cylinders (22) located in the first base (21) and used for clamping the quenching machine guide rail (1); a first fixing block (23) arranged on the first base (21) and fixedly connected with the first base (21) through screws and pins; A first slider (24) is arranged on the first base (21), and the first slider (24) is in sliding connection with the first base (21); the first fixed block (23) and the first slider (24) are fixedly connected through a second oil cylinder (25), and the second oil cylinder (25) is used to drive the first slider (24) to move towards the first fixed block (23) to clamp the linear guide rail (7).

3. The induction hardening system for a followable self-aligning linear guide rail according to claim 2, characterized by The second fixing device (3) further comprises: A third oil cylinder (32) is arranged on both sides of the groove of the second base (31), and the third oil cylinder (32) is located inside the second base (31) and used to clamp the quenching machine tool guide rail (1); A fifth oil cylinder (34) is arranged between the sliding seat (33) and the second base (31), and the fifth oil cylinder (34) is used to drive the sliding seat (33) to slide on the second base (31); A second fixed block (35) is arranged on the sliding seat (33), and the second fixed block (35) is fixedly connected with the sliding seat (33) through screws and pins; A second slider (36) is arranged on the sliding seat (33), and the second slider (36) is in sliding connection with the sliding seat (33); the second fixed block (35) and the second slider (36) are connected through a fourth oil cylinder (37), and the fourth oil cylinder (37) is used to drive the second slider (36) to move towards the second fixed block (35) to clamp the linear guide rail (7).

4. The induction hardening system for a followable self-aligning linear guide rail according to claim 3, characterized by The first base (21) and the sliding seat (33) are provided with dovetail grooves, the lower ends of the first slider (24) and the second slider (36) are provided with dovetail bosses matched with the dovetail grooves, the dovetail grooves and the dovetail bosses form a dovetail structure, the first slider (24) is in sliding connection with the first base (21) through the dovetail structure, and the second slider (36) is in sliding connection with the sliding seat (33) through the dovetail structure.

5. The induction quenching system for a followable self-aligning linear guide rail according to claim 1, characterized by The third fixing device (4) further comprises a sensor base (43), and the angle adjusting module (41) and the self-adjusting module (42) are arranged on the sensor base (43).

6. The induction hardening system for a followable self-aligning linear guide rail according to claim 5, characterized by The axial angle adjusting block (411) is arranged on the sensor base (43) and in rotary connection with the sensor base (43); and the longitudinal angle adjusting block (412) is arranged on the axial angle adjusting block (411) and in rotary connection with the axial angle adjusting block (411).

7. The induction hardening system for a followable self-aligning linear guide rail according to claim 3, characterized by The hydraulic system (8) is further arranged, and the first oil cylinder (22), the second oil cylinder (25), the third oil cylinder (32), the fourth oil cylinder (37) and the fifth oil cylinder (34) are connected with the hydraulic system (8) through hydraulic pipelines.

8. The induction quenching system for a followable self-aligning linear guide rail according to claim 1, characterized by, The water spray cooler (6) is further arranged on the third fixing device (4), and the water spray cooler (6) is connected with the cooling water supply device (61) through a water supply pipeline.

9. A quenching method of a linear guide rail, characterized by, The quenching is performed by using the followable self-adjusting type inductive quenching system for linear guide rails, and comprises the following steps: Quenching machine tool guide rail clamping step: according to the length of the linear guide rail (7), the first fixing device (2) and the second fixing device (3) are slid to the set position on the quenching machine tool guide rail (1), the first oil cylinder (22) and the third oil cylinder (32) are supplied with oil pressure to drive their actions, and the quenching machine tool guide rail (1) is clamped; Linear guide rail clamping step: one end of the linear guide rail (7) is placed between the first sliding block (24) and the first fixed block (23), and the other end is placed between the second sliding block (36) and the second fixed block (35), the second oil cylinder (25) is supplied with oil pressure to drive its action, so that the first sliding block (24) moves towards the first fixed block (23), clamping one end of the linear guide rail (7); the third oil cylinder (32) is supplied with oil pressure to drive its action, so that the second sliding block (36) moves towards the second fixed block (35), clamping the other end of the linear guide rail (7); Linear guide rail adjustment step: the fifth oil cylinder (34) is supplied with oil pressure to drive its action, the fifth oil cylinder (34) drives the sliding seat (33) to slide on the second base (31), the second sliding block (36) and the second fixed block (35) of the linear guide rail (7) move with the sliding seat (33) to exert a pulling force on the linear guide rail (7) to offset the thermal stress and phase change stress in the quenching process; Angle adjustment step: the third fixing device (4) is fixed on the workbench of the quenching machine, and the workbench is adjusted to a position close to the left end of the linear guide rail (7) by the quenching machine; the longitudinal angle adjustment block (412) is rotated to adjust the parallelism of the inductor (5) with the side surface of the linear guide rail (7) in the vertical direction, and the axial angle adjustment block (411) is rotated to adjust the parallelism of the inductor (5) with the side surface of the linear guide rail (7) in the axial direction; Distance adjustment step: the design values of the width of the linear guide rail (7), the distance between the side surface of the linear guide rail (7) and the inner side surface of the inductor (5) are input into the servo system (423); the displacement sensor (422) is adjusted and maintained in contact with the side surface of the linear guide rail (7) by a spring; the servo system (423) is started, and the distance between the inner side surface of the inductor (5) and the side surface of the linear guide rail (7) is adjusted by the servo motor (421) according to the input data by the servo system (423); Quenching step: start the quenching machine, the inductor (5) performs induction quenching on the linear guide rail (7), and the heated parts of the linear guide rail (7) are cooled by spraying; when the third fixing device (4) is driven by the workbench of the quenching machine to move along the linear guide rail (7), the displacement sensor (422) measures the distance change between the two inner side surfaces of the inductor (5) and the two side surfaces of the linear guide rail (7), and feeds back the measured values to the servo system (423); the servo motor (421) is controlled by the servo system (423), and the inductor (5) is driven by the servo motor (421) to adjust the distance between the inner side surface of the inductor (5) and the side surface of the linear guide rail (7).

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