A processing and forming device for magnetic suspension bearing

Abstract

The present invention relates to the field of bearing processing technology, and specifically to a processing and forming device for magnetic suspension bearings, including a machine tool, an alarm, a clamping assembly and a cutting assembly are provided on the machine tool, the cutting assembly includes a group of turning tools with blades arranged away from each other, and both ends of the turning tools are provided with moving assemblies, and also includes a control system, the control system is used to control the operation of the moving assembly, drive the turning tool to move toward the adjacent side wall, and pressure appears between the stator and the rotor and the adjacent turning tool, and then control the clamping assembly to work, according to the size and change trend of the force applied by the stator and the rotor on the adjacent turning tool, judge whether the stator and the rotor are coaxial and whether the turning tool is located at the center of the air gap. The present invention is used to assist in confirming the axis of the stator and the rotor, improve the accuracy of the magnetic suspension bearing in the processing and forming process, and improve the performance of the magnetic suspension bearing.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing, and in particular to a processing and forming device for a magnetic suspension bearing. Background Art

[0002] Magnetic bearings are bearings that use magnetic force to suspend the rotor in the air, so that there is no mechanical contact between the rotor and the stator. Magnetic bearings mainly use the principle that the magnetic induction line is perpendicular to the magnetic levitation line, and support the rotor in the direction opposite to the magnetic levitation line through the almost unloaded shaft core, so that the rotor floats in the air on a fixed running track. This type of bearing has the advantages of low mechanical wear, low energy consumption, low noise, long life, no lubrication, and no oil pollution. It is particularly suitable for special environments such as high speed, vacuum, and ultra-clean.

[0003] In the prior art, in addition to the stator and rotor, the magnetic bearing also includes a radial displacement sensor, a controller, a power amplifier and an actuator. The radial displacement sensor is used to detect the position information of the rotor. When the rotor is disturbed and deviates from the equilibrium position, the sensor can quickly capture this change. The controller is used to calculate the control signal based on the position information provided by the radial displacement sensor and send it to the power amplifier. The power amplifier is used to convert the control signal into a control current, which generates a magnetic force in the actuator magnet, thereby driving the rotor back to the equilibrium position. The actuator consists of two parts: an electromagnet and a power amplifier, and is a key component for generating magnetic force.

[0004] During the processing and forming of magnetic bearings, it is easy for the stator and rotor axes to not coincide, the sensor detection surface axis and the sensor working surface axis to be offset, and the stator or rotor roundness error during processing. These machining errors will make it difficult to adjust the rotor to a balanced state during the use of the magnetic bearing, thereby weakening the performance of the bearing. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a processing and forming device for a magnetic bearing, which is used to assist in confirming the coaxiality of the stator and the rotor, improve the accuracy of the magnetic bearing during the processing and forming process, and improve the performance of the magnetic bearing.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a processing and forming device for a magnetic suspension bearing, comprising a machine tool, the machine tool is provided with an alarm, a clamping assembly, a cutting assembly and an installation assembly, the clamping assembly is used to clamp and fix a stator and a rotor and drive the stator and the rotor to rotate, the cutting assembly is used to cut the stator and the rotor, the installation assembly is used to press the rotor into the stator, the cutting assembly comprises a group of turning tools with blades arranged away from each other, both ends of the turning tool are provided with a moving assembly, the moving assembly is used to fix both ends of the turning tool and drive the turning tool to move radially toward the stator and the rotor of the magnetic suspension bearing;

[0007] It also includes a positioning assembly, which is used to drive the radial displacement sensor to move, and the positioning assembly is detachably connected to the stator;

[0008] It also includes a control system, which is used to control the operation of the moving component to drive the turning tool to move toward the adjacent side wall, generate pressure between the stator and the rotor and the adjacent turning tool, and then control the operation of the clamping component. According to the magnitude and change trend of the force applied by the stator and the rotor on the adjacent turning tool, it is determined whether the stator and the rotor are coaxial and whether the turning tool is located at the center of the air gap. When the stator and the rotor are not coaxial or the turning tool is not located at the center of the air gap, the moving component is controlled to operate. When the stator and the rotor are coaxial and the turning tool is located at the center of the air gap, the clamping component is controlled to operate. When the magnitude of the force applied by the rotor or the stator on the adjacent turning tool does not change within a preset time, the clamping component is controlled to stop operating and the alarm is controlled to sound. The control system is also used to control the clamping component to drive the rotor to rotate to a set angle, receive radial displacement information collected by the radial displacement sensor, compare the difference between the radial displacement information and the set angle, and control the positioning component to adjust the radial displacement sensor position when the difference is greater than the set value, and control the alarm to sound when the difference is less than or equal to the set value.

[0009] Furthermore, the moving component includes a symmetrically arranged first transmission motor, the output ends of the first transmission motor are coaxially fixedly connected with left and right screws, the nut seats of the left and right screws are fixedly connected with first chucks, and the first chucks are detachably connected to adjacent turning tools, and the control system controls the operation of the first transmission motor according to the magnitude and changing trend of the force applied by the stator and rotor on the adjacent turning tools.

[0010] Furthermore, the positioning assembly includes a fixed plate and an air pump, the radial displacement sensors are detachably connected to the fixed plate, and the fixed plate is detachably connected to the stator, a piston corresponding to the radial displacement sensor is slidably fitted on the fixed plate, a pneumatic telescopic rod is fixedly connected to the side wall of the piston away from the radial displacement sensor, the other end of the pneumatic telescopic rod is fixedly connected to the fixed plate, and the pneumatic telescopic rod is connected to the air pump, and a first solenoid valve is provided at the connection point between the pneumatic telescopic rod and the air pump, and the control system is also used to control the clamping assembly to drive the rotor to rotate to a set angle, and control the operation of the air pump, the first solenoid valve and the alarm according to the radial displacement information collected by the radial displacement sensor.

[0011] Further, the control system includes a controller and a plurality of first pressure sensors;

[0012] The first pressure sensors are used to collect first pressure information applied by the turning tool on the corresponding first chuck;

[0013] The controller is used to obtain the size and change trend of the force applied by the stator and the rotor on the turning tool according to the first pressure information, and control the clamping assembly to work according to the size of the force, and then determine whether the stator and the rotor are coaxial according to the change trend of the force, and determine whether the turning tool is located at the center of the air gap. When the stator and the rotor are not coaxial or the turning tool is not located at the center of the air gap, the symmetrically arranged first transmission motor is controlled to work synchronously, and when the stator and the rotor are coaxial and the turning tool is located at the center of the air gap, the clamping assembly is controlled to work. When the size of the force does not change within a preset time, the controller controls the alarm to work; the controller is also used to control the clamping assembly to drive the rotor to rotate a set angle, receive radial displacement information collected by the radial displacement sensor, when the difference between the radial displacement information and the set angle is greater than a preset value, the controller controls the air pump and the first solenoid valve to work according to the radial displacement information, and when the difference between the radial displacement information and the set angle is less than or equal to the preset value, the alarm is controlled to sound.

[0014] Furthermore, the moving component is used to adjust the position of the first transmission motor and the left and right rotating screws. The controller determines whether the turning tool is parallel to the axis of the stator and the rotor based on the pressure information, and when the turning tool is not parallel to the axis of the stator and the rotor, the controller controls the first transmission motor or the moving component to operate according to the positional relationship between the turning tool and the axis of the stator and the rotor.

[0015] Furthermore, it also includes a collecting component, which includes a vacuum pump. A collecting chamber is opened on the machine tool, and a plurality of holes are opened on the side wall of the collecting chamber close to the turning tool. The vacuum pump is used to generate negative pressure in the collecting chamber. The controller is also used to control the operation of the vacuum pump while controlling the operation of the clamping component.

[0016] Furthermore, the side walls of the holes are fixedly connected with protective films made of elastic material, the protective films are provided with a plurality of cracks, and a sphere is provided inside the protective films, and the diameter of the sphere is larger than the diameter of the hole.

[0017] Furthermore, the controller is also used to calculate the time interval between controlling the clamping assembly to work and the force magnitude not changing after the stator and rotor are coaxial and the turning tool is located at the center of the air gap. When the time interval is less than or equal to a critical value, the controller controls the alarm to sound once. When the time interval is greater than the critical value, the controller controls the alarm to sound twice in succession.

[0018] Furthermore, the control system also includes an air pressure sensor, which is used to collect air pressure information in the collection chamber, and the controller controls the alarm to work according to the air pressure information.

[0019] Furthermore, the control system also includes a number of second pressure sensors, which are used to collect second pressure information applied by the stator and the rotor on adjacent clamping components. The controller controls the alarm according to changes in the second pressure information. The controller is also used to correct the magnitude and change trend of the force according to the second pressure information.

[0020] Technical principles and beneficial effects of the above scheme:

[0021] 1. This solution utilizes a special turning tool design to achieve synchronous cutting of the inner wall of the stator and the outer wall of the rotor. Compared with the solution of cutting the stator and the rotor separately in the prior art, this solution can ensure the coincidence of the stator and rotor axes to the greatest extent and ensure that the turning tool is located at the appropriate positions of the stator and the rotor. At the same time, there is no need to repeatedly detect the status of the stator and the rotor during the cutting process, which is beneficial to reducing the steps of magnetic bearing processing. At the same time, this solution realizes automatic adjustment of the turning tool position through the control system, thereby simplifying the installation steps of the turning tool, thereby reducing the requirements for equipment operators, and is beneficial to the later promotion and use of this solution.

[0022] 2. This solution can determine whether the stator and the rotor are in a coaxial state by monitoring the magnitude and change trend of the force applied by the stator or the rotor on the turning tool. Compared with the existing technology, this solution can independently determine the position of the rotor and the stator without relying on other detection equipment, which is conducive to reducing the cost of this solution. At the same time, this solution can also help users determine the installation position of the radial displacement sensor by electrically connecting the radial displacement sensor, without the need for users to repeatedly debug the radial displacement sensor, which is conducive to reducing the processing and assembly time of the magnetic suspension bearing. At the same time, no other sensors are required, which is conducive to further reducing the cost of the equipment.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an isometric diagram of an embodiment of a processing and forming device for a magnetic suspension bearing according to the present invention;

[0025] Figure 2 The left and right isometric views of an embodiment of a processing and forming device for a magnetic suspension bearing according to the present invention;

[0026] Figure 3 It is a front view of an embodiment of a processing and forming device for a magnetic suspension bearing according to the present invention;

[0027] Figure 4 for Figure 3 Cross-section view in the AA direction;

[0028] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0029] Figure 6 It is an axonometric view of a positioning assembly of an embodiment of a processing and forming device for a magnetic suspension bearing according to the present invention;

[0030] Figure 7 The circuit diagram of an embodiment of the processing and forming equipment for magnetic suspension bearings of the present invention is shown in FIG.

[0031] The figure marks in the drawings of the specification include: 1. machine tool; 2. clamping assembly; 21. second chuck; 22. second transmission motor; 3. cutting assembly; 31. turning tool; 32. first transmission motor; 33. left and right rotating screw; 34. first chuck; 4. collecting assembly; 41. collecting chamber; 42. sphere; 43. protective film; 44. crack; 5. moving assembly; 51. moving plate; 52. electric cylinder; 6. positioning assembly; 61. groove; 62. piston; 63. pneumatic telescopic rod. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The following is further described in detail through specific implementation methods:

[0036] Embodiment 1:

[0037] As attached Figure 1 -Attached Figure 7 As shown: a processing and forming equipment for magnetic suspension bearings, including a machine tool 1, the machine tool 1 is provided with an alarm, a clamping assembly 2, a cutting assembly 3 and a mounting assembly (not shown in the figure), the alarm is fixedly connected to the machine tool 1 by bolts, the clamping assembly 2 is used to clamp and fix the stator and the rotor and drive the stator and the rotor to rotate, the clamping assembly 2 includes an oil pump (not shown in the figure), two second transmission motors 22, the second transmission motors 22 are fixedly connected to the machine tool 1 by bolts, the other ends of the output shafts of the two second transmission motors 22 drive two second chucks 21 with a transmission pulley, the second chucks 21 are transmission-connected to the second transmission motors 22 through a transmission belt, the second chucks 21 are rotationally connected to the machine tool 1, a driving groove is opened on the side wall of the second chuck 21 close to the axis thereof, and the driving groove is slidably matched with a support bar (not shown in the figure), the driving grooves are connected to the oil pump (not shown in the figure), and the connection points are provided with second solenoid valves, and hydraulic oil is provided in the driving grooves, and the cutting assembly 3 is used to cut the stator and the rotor.

[0038] The mounting assembly is used to press the rotor into the stator. The mounting assembly includes a hydraulic cylinder, which is fixedly connected to the machine tool 1 by bolts. The cutting assembly 3 includes a group of turning tools 31 whose blades are arranged away from each other. Both ends of the turning tools 31 are provided with moving assemblies 5. The moving assemblies 5 are used to fix both ends of the turning tools 31 and drive the turning tools 31 to move radially toward the stator and rotor of the magnetic bearing. The moving assembly 5 includes a symmetrically arranged first transmission motor 32. The output ends of the first transmission motor 32 are coaxially fixedly connected with left and right screws 33. In this embodiment, the first transmission motor 32 is fixedly connected to the machine tool 1 by bolts, and the ends of the left and right screws 33 away from the first transmission motor 32 are rotatably connected to the machine tool 1. The nut seats of the left and right screws 33 are fixedly connected with first chucks 34 by bolts, and the first chucks 34 are detachably connected to the adjacent turning tools 31.

[0039] It also includes a positioning component 6, which is used to drive the radial displacement sensor to move, and the positioning component 6 is detachably connected to the stator. The positioning component 6 includes a fixed disk and an air pump. In this embodiment, the fixed disk is made of elastic material, and a plurality of grooves 61 are opened on the fixed disk. The radial displacement sensors are detachably connected to the fixed disk through the grooves 61, and the fixed disk is detachably connected to the stator. The grooves 61 are slidably fitted with pistons 62 corresponding to the radial displacement sensors, and a pneumatic telescopic rod 63 is provided on the side wall of the piston 62 away from the radial displacement sensor. The pneumatic telescopic rod 63 includes an outer tube, and an inner rod is slidably fitted inside the outer tube. The inner rod and the inner side wall of the adjacent outer tube constitute a driving cavity, and one end of the inner rod away from the outer tube is bonded and fixed to the piston 62, and one end of the outer tube away from the inner rod is bonded and fixed to the fixed disk, and the driving cavity is connected to the air pump, and a first solenoid valve is provided at the connection point.

[0040] The control system also includes a controller and a plurality of first pressure sensors. The controller is fixedly connected to the machine tool 1 by bolts. The first pressure sensors are fixedly connected to the side wall of the adjacent first chuck 34 close to the turning tool 31 by bolts. The first pressure sensors are used to collect the first pressure information applied by the turning tool 31 to the corresponding first chuck 34. The first pressure sensor, the alarm, the second transmission motor 22, the first transmission motor 32, the air pump and the first solenoid valve are all electrically connected to the controller. The controller is used to obtain the magnitude and change trend of the force applied by the stator and the rotor on the turning tool 31 according to the pressure information, and control the clamping assembly 2 to work according to the magnitude of the force, and then determine whether the stator and the rotor are coaxial according to the change trend of the force, and determine whether the turning tool 31 is located at the center of the air gap. When the stator and the rotor are not coaxial or the turning tool 31 is located at the center of the air gap, the controller controls the operation of the clamping assembly 2 according to the magnitude of the force, and determines whether the stator and the rotor are coaxial according to the change trend of the force. When the tool 31 is not located at the center of the air gap, the two first transmission motors 32 are controlled to work synchronously. When the stator and the rotor are still not coaxial or the turning tool 31 is still not at the center of the air gap within the set time, the controller controls the alarm to work. When the stator and the rotor are coaxial and the turning tool 31 is located at the center of the air gap, the clamping assembly 2 is controlled to work. When the magnitude of the internal force does not change between the preset values, the controller controls the alarm to work. The controller is also used to control the clamping assembly 2 to drive the rotor to rotate a set angle, receive radial displacement information collected by the radial displacement sensor, and when the difference between the radial displacement information and the set angle is greater than the preset value, the controller controls the air pump and the first solenoid valve to work according to the radial displacement information, and when the difference between the radial displacement information and the set angle is less than or equal to the preset value, the alarm is controlled to sound.

[0041] The specific implementation process is as follows: when using the device, the magnetic suspension bearing stator and rotor that have been rough-machined are moved to a position where the axis basically coincides with the second chuck 21, and the second chuck 21 is adjusted so that the second chuck 21 clamps the outer wall of the stator or rotor, and the oil pump and all the second solenoid valves are started at the same time, so that the oil pump synchronously pumps hydraulic oil into all the driving chambers, driving the support bar to move in the direction of the stator or rotor, thereby further fixing the position of the stator and the rotor, and then the two turning tools 31 pass through the air gap, and the turning tools 31 are adjusted so that the turning tools 31 are aligned with the stator and the rotor. The axis of the tool 31 is parallel to that of the first chuck 34, and then the first chuck 34 is adjusted to clamp the end of the tool 31. Then the device is started, and the controller synchronously controls the first transmission motor 32 to work. The first transmission motor 32 drives the left and right screws 33 to rotate, thereby driving the two tools 31 to move synchronously toward the inner wall of the stator or the outer wall of the rotor. During this process, the pressure sensor continuously collects the pressure information applied by the tool 31 on the first chuck 34. When the tool 31 contacts the stator or the rotor, the stator or the rotor gives the tool 31 a reaction force, so that the tool 31 tends to move in the opposite direction.

[0042] At this time, the pressure information applied by the turning tool 31 on the first chuck 34 changes. When the value-added of the pressure information is greater than the preset value, the controller controls the first transmission motor 32 to stop working, and then the controller controls the second transmission motor 22 to work. The second transmission motor 22 drives the second chuck 21 to rotate, thereby driving the stator and the rotor to rotate one circle. During the rotation process, if the axes of the stator and the rotor do not coincide, as the turning tool 31 rotates relative to the stator, the reaction force applied by the stator or the rotor on the turning tool 31 changes, so that the pressure information applied by the turning tool 31 on the first chuck 34 changes accordingly, such as gradually increasing and then decreasing, gradually decreasing until disappearing and then increasing again, or the size nodes of the pressure information changes on both sides are different. At this time, the controller controls the first transmission motor 32 to work, driving the left and right screws 33 to rotate, thereby driving the corresponding first chuck 34 to move, thereby adjusting the positions of the two ends of the turning tool 31. At this time, the controller synchronously controls the second transmission motor 22 to work, driving the stator and the rotor to rotate through the second chuck 21.

[0043] During this process, if the pressure information does not change after the second chuck 21 rotates one circle and the pressure information values ​​on both sides are the same, the turning tool 31 has been adjusted to the center position of the air gap and the two turning tools 31 are parallel to the stator axis. If the pressure information does not change and the pressure information values ​​on both sides are the same after the second chuck 21 rotates one circle within the set time, the stator and the rotor may not be aligned during the fixing process. At this time, the controller controls the alarm to work, prompting the user to adjust the position of the stator and the rotor through the second chuck 21, and then detect the stator and the rotor again until the stator and the rotor are aligned. The axis and the turning tool 31 have been adjusted to the center position of the air gap. At this time, the controller controls the second transmission motor 22 to work, and the second transmission motor 22 drives the stator or rotor to rotate through the second chuck 21. At the same time, the controller controls the first transmission motor 32 to work, driving the turning tool 31 to move synchronously and slowly to the set position, thereby realizing the cutting of the inner wall of the stator and the outer wall of the rotor. When the turning tool 31 moves to the set position and the pressure information does not change after the second chuck 21 rotates one circle, the controller stops the first transmission motor 32 and the second transmission motor 22, and controls the alarm to sound an alarm to prompt the user that the cutting is completed.

[0044] At this time, the operator electrically connects the radial displacement sensor to be installed with the controller, and places the radial displacement sensor into the corresponding groove 61. Since the fixing disk is made of elastic material, it can fix the radial position sensor to a certain extent by deformation. Then, the position of the positioning disk is adjusted so that the axis of the positioning disk coincides with the axis of the stator. Then, the controller controls the second solenoid valve on the second chuck 21 on either side to close. The controller controls the oil pump and the second solenoid valve on the second chuck 21 on the other side, so that the support bars on the second chuck contract and the remaining support bars extend, thereby driving the stator or rotor to rotate. The controller can calculate the length of the extension or shortening of the support bars according to the working time, working power, opening and closing signal of the second solenoid valve, and the size of the driving groove of the oil pump, thereby calculating the angle and direction of rotation of the stator or rotor. At this time, the controller calculates the difference between the radial displacement information of each position and the actual angle. Since the stator and the rotor are in coaxial rotation before rotation, the radial displacement information can theoretically be consistent with the actual angle if the radial displacement sensor is installed in the correct position. The radial displacement sensor is not located at a suitable position at this time. At this time, according to the difference between the radial displacement information collected by the radial displacement sensor and the actual angle change at the corresponding position, the air pump and the corresponding first solenoid valve are controlled to work, and the corresponding radial displacement sensor is driven to move on the stator. Then the above steps are repeated until the stator or rotor rotates the set angle at a certain place, and the difference between the radial displacement information collected by the radial displacement sensor and the actual angle change at the corresponding position is less than or equal to the predicted value. At this time, the radial displacement sensors are all adjusted to suitable positions. Then the controller controls the alarm to sound an alarm, prompting the operator that the radial displacement sensor has been adjusted to a suitable position. At this time, the operator can fix the displacement sensor and the stator. After welding is completed, the positioning disk is peeled off the stator, and the rotor is removed from the corresponding second chuck 21 and placed in the stator. The hydraulic cylinder is started to extrude the rotor and install it in the stator to complete the processing and forming of the stator and rotor of the magnetic suspension bearing.

[0045] Embodiment 2:

[0046] The difference from Example 1 is that it also includes a moving component 5, which is used to adjust the position of the first transmission motor 32 and the left and right screws 33. In this embodiment, the moving component 5 includes a moving plate 51, and the moving plates 51 are all slidably connected to the machine tool 1, and the moving plates 51 are each provided with an electric cylinder 52, the output end of the electric cylinder 52 is fixedly connected to the moving plate 51 by bolts, and the inductor is fixedly connected to the machine tool 1 by bolts, the first transmission motor 32 is fixedly connected to the side wall of the adjacent moving plate 51 away from the machine tool 1 by bolts, and the left and right screws 33 are rotatably connected to the moving plate 51, and the controller is electrically connected to the electric cylinder 52. The controller determines whether the turning tool 31 is in a parallel state with the axis of the stator or rotor based on the pressure information, and when the turning tool 31 is not in a parallel state with the axis of the stator or rotor, the controller controls the first transmission motor 32 or the moving component 5 to work according to the relationship between the turning tool 31 and the axis of the stator or rotor.

[0047] The specific implementation process is as follows: During the use of the present device, when the controller controls the second transmission motor 22 to work and judge whether the turning tool 31 is located at the center of the air gap and whether the stator and rotor axes coincide with each other, if the pressure information collected by the pressure sensor on the first chuck 34 is different, the turning tool 31 may be tilted so that it cannot be parallel to the axis of the first chuck 34. At this time, if the pressure information applied by a turning tool 31 on one side to the left side of the first chuck 34 in front is a N, and the pressure information applied to the right side of the first chuck 34 is b N, and the pressure information applied by the turning tool 31 on the left side of the first chuck 34 on the other side is c N, and the pressure information applied to the right side of the first chuck 34 on this side is d N, if a increases and b decreases at this time, and c decreases and d increases at the same time, then the turning tool 31 collects pressure information a N's pressure sensor is offset in direction. If the offset state of the other turning tool 31 is opposite to that of the turning tool 31, that is, the distance on one side of the two turning tools 31 is smaller than the distance on the other side, the controller controls the first transmission motor 32 on the side with a larger distance to work, and drives the turning tools 31 to approach each other through the left and right screws 33 until the pressure information applied on the first chuck 34 at both ends of the turning tool 31 is the same; if the offset state of the other turning tool 31 is the same as that of the turning tool 31, that is, the two turning tools 31 are in a parallel state, the controller controls the electric cylinder 52 to work, and the electric cylinder 52 adjusts the position of the first transmission motor 32 and the left and right screws 33 through the moving plate 51, thereby adjusting the position of the turning tool 31 until the pressure information applied on the first chuck 34 at both ends of the turning tool 31 is the same.

[0048] This solution distributes the pressure information applied by the turning tool 31 on the first chuck 34 through the change of pressure information, thereby judging the relative position between the turning tool 31 and the axis of the first chuck 34, and at the same time using the second transmission motor 22 or the first transmission motor 32 to adjust the position of the turning tool 31 and the axis of the first chuck 34 according to the different states of the turning tool 31, so that the turning tool 31 and the axis of the first chuck 34 are parallel, thereby making the subsequent process of determining the coaxiality of the stator and the rotor through the turning tool 31 more effective, and also making it unnecessary for the user to pay special attention to the fixed position of the turning tool 31 during use, thereby reducing the difficulty of using the equipment, and during use, the user can also change the positional relationship between the turning tool 31 and the axis of the first chuck 34 through the electric cylinder 52, thereby cutting bearings of different shapes according to needs, thereby expanding the scope of use of this equipment.

[0049] Embodiment 3:

[0050] The difference from Example 2 is that it also includes a collecting component 4, which includes a vacuum pump (not shown in the figure). The vacuum pump is fixedly connected to the machine tool 1 by bolts. A collecting chamber 41 is opened on the machine tool 1, and a plurality of holes are opened on the side wall of the collecting chamber 41 near the turning tool 31. A protective film 43 made of elastic material is bonded and fixed to the side walls of the holes. A plurality of cracks 44 are provided on the protective film 43, and a sphere 42 is provided in the protective film 43. The diameter of the sphere 42 is larger than the diameter of the hole. The vacuum pump is used to generate negative pressure in the collecting chamber 41, and the controller is used to control the operation of the vacuum pump while controlling the operation of the second transmission motor 22. The control system also includes an air pressure sensor, which is fixedly connected to the side wall of the collecting chamber 41 by bolts, and the air pressure sensor is electrically connected to the controller. The air pressure sensor is used to collect air pressure information in the collecting chamber 41, and the controller controls the alarm to work according to the air pressure information.

[0051] The specific implementation process is as follows: When using this equipment, the operator can determine whether to start the vacuum pump according to the operating needs and the cleanliness status of the machine tool 1, and collect metal debris and dust on the machine tool 1 to avoid the metal debris and dust from affecting the bearing processing accuracy. At the same time, when the controller controls the second transmission motor 22 to work, the turning tool 31 rotates relative to the stator and the rotor, and may cut off the side wall of the stator or the rotor. At this time, the controller controls the vacuum pump to work, and the vacuum pump generates negative pressure in the collecting chamber 41. Under the action of air pressure, the protective film 43 is deformed toward the inside of the collecting chamber 41. Due to the deformation of the protective film 43, the sphere 42 is separated from the side wall of the hole, and the crack 44 is opened. At this time, through the crack 44, the collecting chamber 41 is connected to the outside world, and the metal debris formed by turning is collected through the crack 44 to avoid affecting the accuracy of subsequent turning processing. When the controller controls the second transmission motor 22 to stop working, the cutting action that may occur at this time also stops. The controller controls the vacuum pump to stop working. Under the action of air pressure and the elastic force of the protective film 43 itself, the protective film 43 is reset, and drives the sphere 42 to close the hole, so as to avoid the metal debris and dust in the collecting chamber 41 from entering the processing area from the collecting chamber 41 under the influence of gas flow or equipment vibration, etc., and affecting the processing of the rotor and stator.

[0052] At the same time, during the use of the present equipment, an air pressure sensor is used to continuously collect air pressure information in the collection chamber 41. When the vacuum pump is working, the air pressure information gradually increases, and the protective film 43 is deformed. When the crack 44 opens, the air pressure information tends to be stable. In the subsequent process, if the air pressure information drops suddenly, the protective film 43 may be damaged. At this time, the controller controls the alarm to work, prompting the operator to detect the damage of the protective film 43 in time to avoid the subsequent metal debris and dust escaping from the collection chamber 41 due to the damage of the protective film 43, thereby affecting the accuracy of the subsequent bearings.

[0053] This solution controls the vacuum pump to work while controlling the second transmission motor 22, which is conducive to reducing the workload of operators, further reducing the difficulty of equipment operation, and is conducive to the promotion of later equipment. At the same time, the design of the protective film 43 does not affect the collection of metal debris and dust by the collection component 4, and can also prevent metal debris and dust from escaping from the position of the hole when the collection component 4 is not used, thereby preventing it from affecting the subsequent machining accuracy of the bearing stator and rotor. At the same time, the air pressure sensor is used to continuously monitor the damage of the protective film 43 to avoid the escape of metal debris and dust caused by the damage of the protective film 43, thereby further reducing the impact of metal debris and dust generated during the machining process on the subsequent bearing machining accuracy.

[0054] Embodiment 4:

[0055] The difference from Example 3 is that the controller is also used to calculate the time interval between controlling the second transmission motor 22 to work until the magnitude of the force does not change after the stator and rotor are coaxial and the turning tool 31 is located at the center of the air gap. When the time interval is less than or equal to the critical value, the controller controls the alarm to sound once. When the time interval is greater than the critical value, the controller controls the alarm to sound twice in succession.

[0056] The specific implementation process is as follows: During the use of this equipment, the operator sets the corresponding critical value according to the material of the stator and the rotor. After the stator and the rotor are coaxial and the turning tool 31 is located at the center of the air gap, the controller controls the second transmission motor 22 to work until the pressure information tends to be stable. At this time, the cutting is completed, and the stator and the rotor basically meet the processing requirements. At this time, the controller calculates the time interval from the start of cutting to the end of cutting. When the time interval is less than or equal to the critical value, the cutting process is normal at this time. The controller controls the alarm to work once, prompting the operator to proceed to the next step of installing the radial displacement sensor. When the time interval is greater than the set critical value, the sharpness of the turning tool 31 may not meet the cutting requirements or the materials of the stator and the rotor may not meet the requirements. The controller controls the alarm to sound twice, prompting the operator that there is an abnormality in the cutting process, and the turning tool 31, the stator and the rotor should be checked to avoid mechanical errors caused by the sharpness of the turning tool 31 or the materials of the stator and the rotor.

[0057] Embodiment 5:

[0058] The difference from Example 4 is that the control system also includes a plurality of second pressure sensors, which are fixedly connected to the side walls of the second chuck 21 close to the stator and the rotor by bolts, and are electrically connected to the controller. The second pressure sensors are used to collect the second pressure information applied by the stator and the rotor on the adjacent clamping components 2, and the controller controls the alarm according to the change of the second pressure information. The controller can also be used to correct the magnitude and change trend of the force according to the second pressure information.

[0059] The specific implementation process is as follows: During the use of the present device, the second pressure sensor continuously collects the second pressure information applied by the stator or rotor on the second chuck 21. After the axes of the stator and the rotor are adjusted by the turning tool 31 or the like so that the axes of the two coincide, all the second pressure information at this time is obtained as the initial second pressure information. As the cutting proceeds, under the condition of mechanical vibration or gravity, the stator and the rotor may tilt to a certain extent. At this time, due to the change in the position of the center of gravity of the stator or the rotor corresponding to the second chuck 21, the second pressure information applied at different positions of the corresponding second chuck 21 changes. When the difference between the real-time second pressure information and the initial second pressure information at the same position is greater than the preset value, the inclination angle of the stator or the rotor will affect the precision of the bearing. The controller controls the alarm to sound an alarm, prompting the operator to adjust the position of the stator or rotor in time. At the same time, when the stator or rotor is placed on the second chuck 21 for the first time, the controller changes suddenly based on the second pressure information. When the second pressure information does not change within the set time, the second pressure information changes abruptly. At this time, the operator may use the second chuck 21 to fix the stator or rotor, and then release the stator or rotor, but the second chuck 21 is not close to the side wall of the stator or rotor, causing the stator or rotor to shift under the action of gravity. At this time, the controller controls the alarm to work and prompts the operator to perform inspection to avoid the stator or rotor from falling off the machine tool 1 during processing due to improper fixation of the stator and rotor, thereby causing a safety accident.

[0060] At the same time, when the turning tool 31 acts on the stator or rotor, the second pressure information can also reflect the magnitude of its force to a certain extent. Therefore, by using the second pressure information, the magnitude and change trend of the force applied by the stator or rotor to the turning tool 31 obtained by the first pressure information are corrected, thereby improving the accuracy of the data. At the same time, it can also avoid to a certain extent the situation where the data changes suddenly due to a failure of a certain pressure sensor, affecting the judgment of the controller. At the same time, it can also reduce the influence of external force factors such as mechanical vibration on data accuracy, further improving the accuracy of the judgment of this equipment.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A processing and forming device for a magnetic suspension bearing, comprising a machine tool (1), wherein the machine tool (1) is provided with an alarm, a clamping assembly (2), a cutting assembly (3) and a mounting assembly, wherein the clamping assembly (2) is used to clamp and fix a stator and a rotor and drive the stator and the rotor to rotate, the cutting assembly (3) is used to cut the stator and the rotor, and the mounting assembly is used to press the rotor into the stator, wherein: The cutting assembly (3) comprises a group of turning tools (31) whose blades are arranged away from each other, and moving assemblies (5) are provided at both ends of the turning tools (31). The moving assemblies (5) are used to fix the two ends of the turning tools (31) and drive the turning tools (31) to move radially toward the stator and rotor of the magnetic suspension bearing; It also includes a positioning assembly (6), the positioning assembly (6) is used to drive the radial displacement sensor to move, and the positioning assembly (6) is detachably connected to the stator; The system also includes a control system, which is used to control the operation of the moving component (5) to drive the turning tool (31) to move toward the adjacent side wall, so that pressure is generated between the stator and the rotor and the adjacent turning tool (31), and then control the clamping component (2) to operate, and judge whether the stator and the rotor are coaxial and whether the turning tool (31) is located at the center of the air gap according to the magnitude and change trend of the force applied by the stator and the rotor on the adjacent turning tool (31). When the stator and the rotor are not coaxial or the turning tool (31) is not located at the center of the air gap, the moving component (5) is controlled to operate, and when the stator and the rotor are coaxial and the turning tool (31) is located at the center of the air gap, the moving component (5) is controlled to operate. When the rotor or stator is at the center position, the clamping assembly (2) is controlled to work; when the magnitude of the force applied by the rotor or stator to the adjacent turning tool (31) does not change within a preset time, the clamping assembly (2) is controlled to stop working and the alarm is controlled to sound an alarm; the control system is also used to control the clamping assembly (2) to drive the rotor to rotate to a set angle, receive radial displacement information collected by the radial displacement sensor, compare the difference between the radial displacement information and the set angle, and control the positioning assembly (6) to work to adjust the radial displacement sensor position when the difference is greater than a set value, and control the alarm to sound an alarm when the difference is less than or equal to the set value.

2. The processing and forming equipment for magnetic suspension bearing according to claim 1 is characterized in that: The moving assembly (5) comprises a symmetrically arranged first transmission motor (32), the output ends of the first transmission motor (32) are coaxially fixedly connected to left and right screws (33), the nut seats of the left and right screws (33) are fixedly connected to first chucks (34), and the first chucks (34) are detachably connected to adjacent turning tools (31), and the control system controls the operation of the first transmission motor (32) according to the magnitude and change trend of the force applied by the stator and the rotor to the adjacent turning tools (31).

3. The processing and forming equipment for magnetic suspension bearing according to claim 2 is characterized in that: The positioning assembly (6) comprises a fixed disk and an air pump, the radial displacement sensors are detachably connected to the fixed disk, and the fixed disk is detachably connected to the stator, a piston (62) corresponding to the radial displacement sensor is slidably fitted on the fixed disk, a pneumatic telescopic rod (63) is fixedly connected to the side wall of the piston (62) away from the radial displacement sensor, the other end of the pneumatic telescopic rod (63) is fixedly connected to the fixed disk, and the pneumatic telescopic rod (63) is connected to the air pump, and a first electromagnetic valve is provided at the connection point between the pneumatic telescopic rod (63) and the air pump, and the control system is also used to control the clamping assembly (2) to drive the rotor to rotate at a set angle, and control the operation of the air pump, the first electromagnetic valve and the alarm according to the radial displacement information collected by the radial displacement sensor.

4. The processing and forming equipment for magnetic bearing according to claim 3 is characterized in that: The control system includes a controller and a plurality of first pressure sensors; The first pressure sensors are used to collect first pressure information applied by the turning tool (31) on the corresponding first chuck (34); The controller is used to obtain the magnitude and change trend of the force applied by the stator and the rotor on the turning tool (31) according to the first pressure information, and control the clamping assembly (2) to work according to the magnitude of the force, and then determine whether the stator and the rotor are coaxial according to the change trend of the force, and determine whether the turning tool (31) is located at the center of the air gap, and control the symmetrically arranged first transmission motor (32) to work synchronously when the stator and the rotor are not coaxial or the turning tool (31) is not located at the center of the air gap, and control the clamping assembly (2) to work when the stator and the rotor are coaxial and the turning tool (31) is located at the center of the air gap, and when the magnitude of the force does not change within a preset time, the controller controls the alarm to work; the controller is also used to control the clamping assembly (2) to drive the rotor to rotate a set angle, receive radial displacement information collected by the radial displacement sensor, and when the difference between the radial displacement information and the set angle is greater than a preset value, the controller controls the air pump and the first electromagnetic valve to work according to the radial displacement information, and when the difference between the radial displacement information and the set angle is less than or equal to the preset value, controls the alarm to sound an alarm.

5. The processing and forming equipment for magnetic suspension bearing according to claim 4 is characterized in that: The moving assembly (5) is used to adjust the positions of the first transmission motor (32) and the left and right screws (33). The controller determines whether the turning tool (31) is in a parallel state with the axis of the stator and the rotor based on the pressure information, and when the turning tool (31) is not in a parallel state with the axis of the stator and the rotor, the controller controls the first transmission motor (32) or the moving assembly (5) to operate based on the positional relationship between the turning tool (31) and the axis of the stator and the rotor.

6. The processing and forming equipment for magnetic suspension bearing according to claim 5 is characterized in that: The machine tool (1) further comprises a collecting assembly (4), the collecting assembly (4) comprising a vacuum pump. A collecting chamber (41) is provided on the machine tool (1), a plurality of holes are provided on a side wall of the collecting chamber (41) close to the turning tool (31), the vacuum pump is used to generate negative pressure in the collecting chamber (41), and the controller is also used to control the operation of the vacuum pump while controlling the operation of the clamping assembly (2).

7. The processing and forming equipment for magnetic suspension bearing according to claim 6 is characterized in that: The side walls of the holes are fixedly connected with protective films (43) made of elastic material, the protective films (43) are provided with a plurality of cracks (44), and a sphere (42) is provided inside the protective films (43), the diameter of the sphere (42) being greater than the diameter of the hole.

8. The processing and forming equipment for magnetic suspension bearing according to claim 7 is characterized in that: The controller is also used to calculate the time interval between controlling the clamping assembly (2) to work and the force magnitude not changing after the stator and the rotor are coaxial and the turning tool (31) is located at the center of the air gap. When the time interval is less than or equal to a critical value, the controller controls the alarm to sound once. When the time interval is greater than the critical value, the controller controls the alarm to sound twice in succession.

9. The processing and forming equipment for magnetic suspension bearing according to claim 8, characterized in that: The control system also includes an air pressure sensor, which is used to collect air pressure information in the collection chamber (41), and the controller controls the alarm to work according to the air pressure information.

10. The processing and forming equipment for magnetic suspension bearing according to claim 9, characterized in that: The control system also includes a plurality of second pressure sensors, which are used to collect second pressure information applied by the stator and the rotor on the adjacent clamping components (2). The controller controls the alarm to sound an alarm according to changes in the second pressure information. The controller is also used to correct the magnitude and change trend of the force according to the second pressure information.

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