Soft-belt-free electromagnetic induction quenching numerical control machine tool for bearing parts

Abstract

The invention belongs to the technical field of quenching numerical control machine tools, and particularly relates to a bearing part soft-belt-free electromagnetic induction quenching numerical control machine tool which comprises a supporting table used for positioning a bearing to be quenched and enabling the bearing to circumferentially rotate around a center shaft of the bearing; and the first support assemblies are annularly arranged around the supporting table, each first support assembly can be provided with at least one electromagnetic inductor, and the electromagnetic inductors are used for quenching the bearing. According to the bearing quenching device, the first support assembly and the second support assembly which are independent are arranged, so that limitation of an existing portal frame on the size of a bearing is avoided, the quenching requirements of bearings of different sizes can be met, in addition, when the spraying pipe sprays and cools the bearing, the high-frequency vibrator can transmit vibration to a bearing spraying and cooling area, and the bearing cooling effect is improved. Therefore, the bearing is subjected to vibration stress relief, and the overall strength and quality of the bearing are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of quenching CNC machine tools, and particularly relates to an electromagnetic induction quenching CNC machine tool for bearing parts without soft zones. Background Art

[0002] The electromagnetic induction quenching CNC machine tool without soft zones is an advanced equipment for surface quenching of metal materials, mainly used for the processing of parts such as bearings, which can effectively improve the wear resistance, fatigue strength and service life of the parts. Since the electromagnetic inductor on the existing electromagnetic induction quenching CNC machine tool without soft zones is installed on the gantry, it is restricted by the gantry, resulting in the existing electromagnetic induction quenching CNC machine tool without soft zones being unable to meet the quenching requirements of large-diameter bearing parts.

[0003] In addition, during the quenching process of large-diameter bearings, due to the non-uniformity of tissue transformation and thermal expansion and contraction, large tissue stress and thermal stress will be generated. Moreover, the large-sized bearings have a large mass and a large heat capacity during quenching, and the temperature changes slowly during the cooling process, and it is difficult to relax the stress, resulting in further stress accumulation, thereby affecting the overall strength and quality of the bearings.

[0004] Therefore, it is very necessary to invent an electromagnetic induction quenching CNC machine tool for bearing parts without soft zones to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention provides an electromagnetic induction quenching CNC machine tool for bearing parts without soft zones to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An electromagnetic induction quenching CNC machine tool for bearing parts without soft zones, comprising a support table for fixing the bearing to be quenched and driving it to rotate; An electromagnetic inductor for quenching the bearing; A first bracket assembly for installing the electromagnetic inductor; A stress elimination assembly, including a high-frequency vibrator, a connection structure, a laser displacement sensor and a contact structure. The connection structure is used for installing the high-frequency vibrator and for stably pressing the high-frequency vibrator on the top of the bearing. The laser displacement sensor is installed on the high-frequency vibrator for detecting the motion state of the bearing. The contact structure is connected to the bottom of the high-frequency vibrator for transmitting high-frequency vibration to the bearing; A second bracket assembly for installing the stress elimination assembly.

[0007] Further, the support table includes: Support arms for supporting the bearing; The limiting roller is installed on the support arm and is used for central positioning of the bearing placed on the support arm; The rotating table is used for installing the support arm and driving the support arm to rotate; The base is used for installing the rotating table.

[0008] Furthermore, the first bracket assembly includes: The first upright column is connected to the base; the first mounting frame is connected to the first upright column; the first mounting block is connected to the first mounting frame and is used for installing the electromagnetic inductor.

[0009] Furthermore, the connection structure includes: The first pushing member is connected to the second bracket assembly and is used for driving the high-frequency vibrator to move vertically; The mounting plate is connected to the bottom of the first pushing member; The positioning rod is connected between the mounting plate and the high-frequency vibrator; The elastic member is connected to the positioning rod and is used for pressing the high-frequency vibrator against the top of the bearing.

[0010] Furthermore, the contact structure includes: The flexible contact plate is arranged between the bearing and the high-frequency vibrator; The conduction column is connected between the high-frequency vibrator and the flexible contact plate and is used for transmitting the vibration of the high-frequency vibrator to the flexible contact plate.

[0011] Furthermore, the second bracket assembly includes: The second upright column is connected to the base, the second mounting frame is connected to the second upright column, the second mounting block is connected to the second mounting frame and is used for installing the first pushing member, and the spray pipe is installed on the second mounting block and is used for cooling the bearing.

[0012] Furthermore, a ring-shaped baffle for storing water is connected to the top of the flexible contact plate, and a notch is formed in the top of the ring-shaped baffle.

[0013] Furthermore, an inclined groove is formed in the bottom of the flexible contact plate, and a sliding assembly is installed in the inclined groove. The sliding assembly includes: The inclined sliding plate is installed in the inclined groove; The roller shaft is installed at the bottom of the inclined sliding plate and is used for reducing the friction between the inclined sliding plate and the bearing; The push rod is slidably inserted into the side surface of the flexible contact plate; The T-shaped plate is used for installing the push rod; A second driving member, which is used to drive the push rod to push the inclined plane slide plate to move in the inclined plane groove.

[0014] Furthermore, an annular protection plate is sleeved on the high-frequency vibrator, which is used to prevent the cooling water sprayed from the spray pipe from splashing upwards onto the laser displacement sensor.

[0015] The technical effects and advantages of the present invention: 1. By providing independent first and second bracket assemblies, the present invention avoids the limitation of the existing gantry on the bearing size, and can thus meet the quenching requirements of bearings of different sizes. In addition, while the spray pipe sprays and cools the bearing, the high-frequency vibrator can transfer vibration to the bearing spray cooling area, thereby eliminating stress on the bearing through vibration and enhancing the overall strength and quality of the bearing. 2. By providing an annular baffle at the top of the flexible touch plate, during the process of the spray pipe cooling the bearing, part of the cooling water sprayed from the spray pipe can enter the inner side of the annular baffle through the notch, and then the cooling water entering the inner side of the annular plate can cool the flexible touch plate, thus preventing the temperature of the flexible touch plate from being too high. 3. By providing an inclined plane slide plate at the bottom of the flexible touch plate, during the process of the high-frequency vibrator eliminating stress on the bearing through vibration, when the bearing rotates, the inclined plane slide plate can extend out of the inclined plane groove under the action of the second driving member, so that the roller shaft at the bottom of the inclined plane slide plate can roll along the surface of the bearing, thereby reducing the friction between the flexible touch plate and the bearing when the bearing rotates without the need to drive the high-frequency vibrator to move upwards by the first driving member, and further ensuring that the high-frequency vibrator can smoothly move to the top position of the next area to be heated relative to the bearing, and ensuring the quenching efficiency of the bearing. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a three-dimensional schematic diagram of structures such as the high-frequency vibrator, the first driving member, the spray pipe, and the second mounting block in the present invention; Figure 3 is a three-dimensional schematic diagram of structures such as the flexible touch plate, the conduction column, the second driving member, and the annular baffle in the present invention; Figure 4 is a three-dimensional sectional view of the flexible touch plate in the present invention; Figure 5 is a three-dimensional schematic diagram of the first mounting frame, the first mounting block, and the electromagnetic inductor in the present invention.

[0017] In the figure: 1, support platform; A, first support assembly; B, second support assembly; 2, electromagnetic inductor; 3, high-frequency vibrator; 4, laser displacement sensor; 5, support arm; 6, limiting roller; 7, rotating table; 8, base; 9, first column; 10, first mounting bracket; 11, first mounting block; 12, first pusher; 13, mounting plate; 14, positioning rod; 15, elastic member; 16, flexible touch plate; 17, conduction column; 18, second column; 19, second mounting bracket; 20, second mounting block; 21, spray pipe; 22, annular baffle; 23, inclined groove; 24, inclined slide plate; 25, roller shaft; 26, push rod; 27, T-shaped plate; 28, second pusher; 29, protective plate. Detailed implementation manner

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0019] The present invention provides as Figures 1 to 5An electromagnetic induction hardening numerically controlled machine tool for bearing parts without soft zones is shown, including a support table 1 for fixing the bearing to be hardened and driving it to rotate. The support table 1 includes: support arms 5, limit rollers 6, a rotating table 7, and a base 8. The support arms 5, there are multiple support arms 5, and the multiple support arms 5 are evenly distributed in a ring shape for supporting the bearing; an installation groove is opened at the top of the support arm 5, and an electric slider is slidably installed in the installation groove. The limit roller 6 is rotatably installed on the top of the electric slider, and when the bearing to be hardened is placed on the support arm 5, the multiple limit rollers 6 can cooperate with each other and center-position the bearing placed on the support arm 5 from the inner side direction of the bearing; the rotating table 7 is located at the center position of the multiple support arms 5, and the multiple support arms 5 are evenly horizontally installed on the side of the rotating table 7, and the rotating table 7 can drive the multiple support arms 5 to rotate together. The base 8 is connected to the bottom of the rotating table 7. The number of electromagnetic inductors 2 is multiple, and the multiple electromagnetic inductors 2 are evenly distributed in a ring shape for uniformly hardening the bearing; the electromagnetic inductor 2 is installed on the first support assembly A, and the number of the first support assemblies A is multiple, and the multiple first supports are evenly distributed in a ring shape. The stress elimination assembly includes a high-frequency vibrator 3, a connection structure, a laser displacement sensor 4, and a contact structure. The high-frequency vibrator 3 is installed on the connection structure, and the connection structure can stably press the high-frequency vibrator 3 against the top of the bearing. The laser displacement sensor 4 is installed on the high-frequency vibrator 3, and the laser displacement sensor 4 is inclined to irradiate the surface of the bearing for detecting the movement state of the bearing and controlling the opening and closing of the high-frequency vibrator 3 according to the movement state of the bearing. The contact structure is connected to the bottom of the high-frequency vibrator 3 for transmitting the high-frequency vibration to the bearing; the stress elimination assembly is installed on the second support assembly B, and the number of the second support assemblies B is the same as the number of the first support assemblies A, and the second support assembly B corresponds to the first support assembly A one by one; Before hardening the bearing, place the bearing to be hardened on the multiple support arms 5, then synchronously start the multiple electric sliders to drive the corresponding limit rollers 6 to move synchronously away from the rotating table 7. When the multiple limit rollers 6 are all in close contact with the inner side of the bearing, the bearing can be concentric with the rotating table 7 under the cooperation of the multiple limit rollers 6. Then, the position of the electromagnetic inductor 2 on the first support assembly A can be adjusted according to the different sizes of the bearing, so that the electromagnetic inductor 2 can be close to the outer side of the bearing. Then, adjust each second support assembly B so that the high-frequency vibrator 3 in the stress elimination assembly installed on the second support assembly B can be located at the top of the bearing and be pressed against the bearing through the contact structure; When quenching the bearing, with the start of the electromagnetic inductor 2, the electromagnetic inductor 2 can heat the side position facing the bearing. Since the bearing is large in size, in order to ensure the quenching effect, the bearing can rotate intermittently driven by the rotating table 7, so as to ensure that the electromagnetic inductor 2 has sufficient time to heat the position currently facing the bearing. After the electromagnetic induction completes the heating operation on the current position of the bearing, as the rotating table 7 drives the bearing to rotate, the heated position of the bearing can gradually move towards the position where the adjacent high-frequency vibrator 3 is located. When the laser displacement sensor 4 detects the process that the bearing rotates first and then stops, both the high-frequency vibrator 3 and the spray pipe 21 on the second bracket assembly B can be started. As a result, while the high-frequency vibrator 3 can transmit the vibration to the heated position of the bearing through the contact structure, the spray pipe 21 can also spray and cool the heated position of the bearing, so as to complete the quenching operation of the bearing while performing the vibration stress relief operation on the bearing, thereby improving the overall strength and quality of the bearing; In addition, since in this embodiment, the independent first bracket assembly A and the second bracket assembly B are provided, the limitation of the bearing size by the existing gantry is avoided, and thus the quenching requirements of bearings with different sizes can be met.

[0020] Such as Figure 1 、 Figure 2 and Figure 5 , in order to meet the heating requirements of shafts with different diameters, in this embodiment, the first bracket assembly A is provided. The first bracket assembly A includes a first column 9, a first mounting frame 10 and a first mounting block 11. The first column 9 is vertically and fixedly connected to the base 8, and the side of the first column 9 close to the bearing is an electric slide rail. The first mounting frame 10 is horizontally slidably mounted on the electric slide rail on the first column 9 in the vertical direction, and the bottom of the first mounting plate 13 is also an electric slide rail. The first mounting block 11 is slidably mounted on the electric slide rail of the first mounting frame 10. The electromagnetic inductor 2 is fixedly connected to the bottom of the first mounting block 11. The connection structure includes a first pushing member 12, a mounting plate 13, a positioning rod 14 and an elastic member 15. The first pushing member 12 can be an electric push rod, and the number of the first pushing members 12 is two. The first pushing members 12 are fixedly connected to the bottom of the second mounting block 20, and the bottom of the first pushing members 12 is fixedly connected to the top of the mounting plate 13. The number of the positioning rods 14 is multiple, and multiple positioning rods 14 are all vertically slidably inserted through the mounting plate 13. The bottom end of the positioning rod 14 is fixedly connected to the top of the high-frequency vibrator 3. The elastic member 15 can be a spring. The elastic member 15 is sleeved on the positioning rod 14, and the elastic member 15 is connected between the high-frequency vibrator 3 and the mounting plate 13; When eliminating stress from the bearing by vibration, after the first mounting block 11 drives the high-frequency vibrator 3 to the top of the bearing along the electric slide rail at the bottom of the first mounting frame 10, the first mounting frame 10 can drive the high-frequency vibrator 3 to move downward along the electric slide rail of the first upright column 9. When the contact structure at the bottom of the high-frequency vibrator 3 contacts the top of the bearing, as the first pushing member 12 gradually extends, the mounting plate 13 can gradually compress the elastic member 15 under the action of the first pushing member 12. As the elastic member 15 is compressed, the pressure of the elastic member 15 on the high-frequency vibrator 3 can cause the high-frequency vibrator 3 to gradually press tightly against the top of the bearing. When the high-frequency vibrator 3 is completely pressed against the bearing, with the activation of the high-frequency vibrator 3, the vibration generated by the high-frequency vibrator 3 can eliminate the stress of the bearing, thereby improving the overall strength of the bearing and ensuring the bearing quality; In addition, by providing the elastic member 15, when the vibration generated by the high-frequency vibrator 3 is transmitted upward through the positioning rod 14, the elastic member 15 can absorb the vibration, thereby reducing the impact of the vibration on the second pushing member 28; Furthermore, since the electromagnetic inductor 2 mounted on the first mounting block 11 can adjust its position for bearings with different diameters under the combined action of the first upright column 9 and the first mounting frame 10, the electromagnetic inductor 2 can meet the heating operations for bearings with different diameters.

[0021] As Figures 2 to 4 shown, in order to protect the high-frequency vibrator 3, in this embodiment, a contact structure is provided at the bottom of the high-frequency vibrator 3. The contact structure includes a flexible contact plate 16 and conduction columns 17. The flexible contact plate 16 is horizontally arranged at the bottom of the high-frequency vibrator 3, and the size of the flexible contact plate 16 matches the size of the bottom of the high-frequency vibrator 3. The number of conduction columns 17 is multiple, and multiple conduction columns 17 are uniformly and vertically fixed between the high-frequency vibrator 3 and the flexible contact plate 16; When using the high-frequency vibrator 3 to eliminate stress from the bearing, after the second support assembly B drives the high-frequency vibrator 3 to press tightly against the top of the bearing, the flexible contact plate 16 can contact the position after the bearing is heated instead of the high-frequency vibrator 3, thereby avoiding damage to the high-frequency vibrator 3 caused by high temperature. Subsequently, with the activation of the high-frequency vibrator 3, the vibration generated by the high-frequency vibrator 3 can be transmitted to the bearing through the multiple conduction columns 17 and the flexible contact plate 16, thereby being able to eliminate stress from the bearing by vibration.

[0022] As Figure 1 and Figure 2As shown, in order to meet the cooling requirements of bearings with different diameters, in this embodiment, a second support assembly B is provided. The second support assembly B includes a second column 18, a second mounting bracket 19, a second mounting block 20, and a spray pipe 21. The second column 18 is vertically connected to the base 8, and the side of the second column 18 close to the shaft is an electric slide rail. The second mounting bracket 19 is horizontally slidably mounted on the electric slide rail of the second column 18 in the vertical direction, and the bottom of the second mounting bracket 19 is also an electric slide rail. The second mounting block 20 is slidably mounted on the electric slide rail of the second mounting bracket 19. The first pushing member 12 is fixedly connected to the bottom of the second mounting block 20. The spray pipe 21 is detachably mounted on the second mounting block 20, and the spray pipe 21 is located on the side of the high-frequency vibrator 3 away from the bearing. A plurality of nozzles are uniformly arranged on the side of the spray pipe 21 close to the high-frequency vibrator 3 in the vertical direction, and the height of the nozzles is lower than the height of the flexible contact plate 16; When cooling the heated place of the bearing, first, the second mounting block 20 can drive the high-frequency vibrator 3 to move to the edge position at the top of the bearing along the electric slide rail at the bottom of the second mounting bracket 19. Subsequently, the second mounting bracket 19 can gradually descend along the electric slide rail on the second column 18. When the flexible contact plate 16 at the bottom of the high-frequency vibrator 3 is pressed against the top of the bearing, the nozzle part of the spray pipe 21 is also just facing the outside of the bearing. At this time, while the high-frequency vibrator 3 vibrates the bearing to eliminate stress, the spray pipe 21 can also perform synchronous spraying and cooling on the heated position of the bearing, so as to eliminate the stress of the bearing while completing the quenching of the bearing, and improve the overall strength and quality of the bearing; In addition, since the spray pipe 21 mounted on the second mounting block 20 can adjust the position according to bearings with different diameters under the combined action of the second column 18 and the second mounting bracket 19, the spray pipe 21 can meet the spray cooling operations for bearings with different diameters.

[0023] As Figures 2 to 4 As shown, in order to prevent the temperature of the flexible contact plate 16 from rising too high, in this embodiment, an annular baffle 22 for storing water is connected to the top of the flexible contact plate 16. The top of the annular baffle 22 is attached to the bottom of the high-frequency vibrator 3. Notches are provided at the top of the annular baffle 22 except on the side away from the spray pipe 21, and the notches are at the same height as some nozzles of the spray pipe 21; During the process of the spray pipe 21 cooling the bearing, some cooling water sprayed from the spray pipe 21 can enter the inner side of the annular baffle 22 through the notches, and then the cooling water entering the inner side of the annular plate can cool the flexible contact plate 16, thus preventing the temperature of the flexible contact plate 16 from being too high; As the water level inside the annular baffle 22 rises, when the water level is higher than the height of the notch, the excess cooling water can flow out of the inside of the annular baffle 22 through the notch. During the process of the cooling water flowing out, the cooling water can carry away the heat from the top of the flexible contact plate 16, thereby improving the cooling effect of the cooling water on the flexible contact plate 16.

[0024] As Figures 2 to 4 shown, in order to avoid repeated adjustment of the height of the high-frequency vibrator 3 and reduce the friction between the bottom of the flexible contact plate 16 and the top of the bearing during the rotation of the bearing, in this embodiment, an inclined groove 23 is provided at the bottom of the flexible contact plate 16. The top groove wall of the inclined groove 23 is designed as an inclined surface, and the top groove wall of the inclined groove 23 gradually slopes upward in the direction away from the rotation of the rotating shaft. A sliding assembly is installed in the inclined groove 23. The sliding assembly includes: an inclined surface sliding plate 24, a roller 25, a push rod 26, a T-shaped plate 27, and a second pushing member 28. The inclined surface sliding plate 24 is installed in the inclined groove 23. The top surface of the inclined surface sliding plate 24 is parallel and fitted to the top inclined surface of the inclined groove 23, and the bottom of the inclined surface sliding plate 24 is parallel and fitted to the top of the bearing. The roller 25 is installed at the bottom of the inclined surface sliding plate 24 for reducing the friction between the inclined surface sliding plate 24 and the bearing. The number of rollers 25 is multiple, and the multiple rollers 25 are arranged in parallel. The roller 25 and the inclined surface sliding plate 24 can be completely received in the inclined groove 23; the number of push rods 26 is two. The push rods 26 are horizontally slidably inserted into one side of the flexible contact plate 16 close to the rotation direction of the bearing, and a ball is installed at one end of the push rod 26 in contact with the inclined surface sliding plate 24, so as to reduce the friction between the push rod 26 and the inclined surface sliding plate 24; the end of the push rod 26 away from the ball is connected to the T-shaped plate 27; the second pushing member 28 can be an electric push rod. The second pushing member 28 is horizontally and fixedly connected between the high-frequency vibrator 3 and the T-shaped plate 27. The second pushing member 28 can drive the push rod 26 to push the inclined surface sliding plate 24 to move in the inclined groove 23; During the process of the spray pipe 21 spraying and cooling the heated part of the bearing, the high-frequency vibrator 3 can, under the pressure of the elastic member 15, press the flexible contact plate 16 tightly against the top surface of the bearing. At this time, both the inclined plane slide plate 24 and the roller 25 are completely retracted into the inclined plane groove 23. As the high-frequency vibrator 3 operates, the high-frequency vibrator 3 can continuously vibrate the bearing. During this process, the bearing is in a state of suspended rotation. When the spray pipe 21 completes the cooling operation on the current position of the bearing, as the bearing rotates, the high-frequency vibrator 3 can stop working. At the same time, the second pusher 28 can shorten, thereby pushing the inclined plane slide plate 24 to move along the inclined plane chute in the direction away from the rotation of the bearing through the T-shaped plate 27 and the push rod 26. During this process, the flexible contact plate 16 can gradually move upward under the pushing of the top surface of the inclined plane slide plate 24 against the top groove wall of the inclined plane groove 23. As the flexible contact plate 16 moves upward, the elastic member 15 can be further compressed, and the bottom of the inclined plane slide plate 24 can extend out of the inclined plane groove 23, so that the roller 25 remains in contact with the surface of the bearing. Subsequently, as the bearing rotates, the roller 25 can roll along the surface of the bearing, thereby reducing the friction between the flexible contact plate 16 and the bearing when the bearing rotates without the need to drive the high-frequency vibrator 3 to move upward by the first pusher 12, and further ensuring that the high-frequency vibrator 3 can smoothly move to the top position of the next area to be heated relative to the bearing, ensuring the quenching efficiency of the bearing; When the high-frequency vibrator 3 moves to the next area to be quenched at the top of the bearing, as the laser displacement sensor 4 detects that the bearing stops rotating, the high-frequency vibrator 3 can restart and operate for a period of time, and the second pusher 28 can elongate again, thereby driving the push rod 26 to separate from the inclined plane slide plate 24 through the T-shaped plate 27. At this time, with the pressure of the top of the inclined plane groove 23 on the top of the inclined plane slide plate 24, the inclined plane pressure plate can gradually reset along the inclined plane groove 23 and be completely retracted into the inclined plane groove 23 again. Subsequently, the flexible contact plate 16 can be in contact with the surface of the bearing again, so as to facilitate the high-frequency vibrator 3 to stably transmit the vibration to the bearing.

[0025] As Figure 2 shown, in order to ensure the normal operation of the laser displacement sensor 4, an annular protective plate 29 is sleeved on the high-frequency vibrator 3. The protective plate 29 is located at the bottom of the laser displacement sensor 4, and the edge of the protective plate 29 slopes downward to prevent the cooling water sprayed from the spray pipe 21 from splashing upward onto the laser displacement sensor 4; During the use of the laser displacement sensor 4, when the cooling water sprayed from the spray pipe 21 sprays onto the bearing and the annular baffle 22, as the cooling water splashes, the protective plate 29 can block the upward splashing cooling water, thereby preventing the cooling water from splashing onto the laser displacement sensor 4 and affecting the normal use of the laser displacement sensor 4.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. An electromagnetic induction hardening numerical control machine tool for bearing parts without soft zones, characterized in that, include: A support platform (1) is used to position a bearing to be quenched and enable it to rotate circumferentially around a central axis of the bearing; A first bracket assembly (A) arranged in a ring around the support platform (1), each of the first bracket assemblies (A) being capable of mounting at least one electromagnetic inductor (2), the electromagnetic inductor (2) being used to quench the bearing; A second bracket assembly (B) arranged in a ring around the support platform (1), which can be equipped with a stress relief assembly (C), wherein the stress relief assembly (C) comprises a connecting structure, a high-frequency vibrator (3) arranged on the connecting structure, and a contact structure; The high-frequency vibrator (3) is capable of generating vibrations of a controllable frequency, the contact structure is connected to the high-frequency vibrator (3), and the connection structure controls the movement of the contact structure and causes it to abut against the bearing, so that the vibrations generated by the high-frequency vibrator (3) are transmitted to the bearing through the contact structure.

2. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft zone according to claim 1, wherein, The support platform (1) comprises: Base (8); A rotating platform (7) is arranged on the base (8) and is capable of self-rotation; A plurality of support arms (5) extending in a radial direction away from the rotating table (7) and away from the rotating table (7), and the plurality of support arms (5) are arranged at equal intervals along the circumference of the rotating table (7); The limiting roller (6) is slidably connected to the support arm (5) and is movable along the extension direction of the support arm (5) to perform center positioning on the bearing placed on the support arm (5).

3. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft zone according to claim 2, wherein, The first bracket assembly comprises: A first column (9) connected to the base (8); A first mounting frame (10) connected to the first column (9) and extending in the direction of the rotating platform (7); A first mounting block (11) has one end slidably connected to the first mounting frame (10) and the other end capable of mounting the electromagnetic inductor (2).

4. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft zones according to claim 3, characterized in that, The connection structure comprises: A first pushing member (12) connected to the second bracket assembly and capable of driving the high-frequency vibrator (3) to move up and down; A mounting plate (13) connected to an output end of the first pushing member (12); Positioning rods (14) are respectively arranged between the mounting plate (13) and the high-frequency vibrator (3); An elastic member (15) is sleeved on the outer periphery of the positioning rod (14) to provide elastic preload when the contact structure abuts against the bearing.

5. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft belt according to claim 4, characterized in that, The contact structure comprises: A flexible touch panel (16) is arranged on a side of the high-frequency vibrator (3) facing away from the first pushing member (12); A conductive column (17) is connected to the flexible touch panel (16) and in contact with the high-frequency vibrator (3), and is used to transmit the vibration of the high-frequency vibrator (3) to the flexible touch panel (16).

6. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft zone according to claim 5, characterized in that, The second bracket assembly comprises: A second column (18) connected to the base (8); A second mounting frame (19) connected to the second upright column (18) and extending in a direction toward the rotating platform (7); A second mounting block (20), connected to the second mounting frame (19), and used for mounting the first pushing member (12); Among them, at least one spray pipe (21) is further arranged on the second mounting block (20) for cooling the bearing.

7. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft zone according to claim 6, wherein: A circular baffle (22) is connected to the top of the flexible contact plate (16), and a plurality of notches are formed in the circular baffle (22), and the notches are at the same height as part of the nozzles of the spray pipe (21).

8. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft zone according to claim 7, characterized in that: An inclined surface groove (23) is formed in the bottom of the flexible contact plate (16), and a sliding assembly is installed in the inclined surface groove (23). The sliding assembly includes: An inclined surface sliding plate (24) installed in the inclined surface groove (23); A roller shaft (25) installed at the inclined surface sliding plate (24); A push rod (26) slidably inserted into one side of the flexible contact plate (16); A T-shaped plate (27) for installing the push rod (26); A second pushing member (28) for driving the push rod (26) to push the inclined surface sliding plate (24) to move in the inclined surface groove (23).

9. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft zone according to claim 6, characterized in that: An annular protective plate (29) is sleeved on the high-frequency vibrator (3).

10. The electromagnetic induction hardening numerical control machine tool for bearing parts without soft belt according to any one of claims 6 to 8, characterized in that: A laser displacement sensor (4) is further included, and the laser displacement sensor (4) is used to detect the motion state of the bearing; Among them, when the laser displacement sensor can detect that the bearing first rotates and then stops, the high-frequency vibrator (3) and the spray pipe (21) respond and start.

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