Rotor destressing equipment and machining method

Abstract

The invention discloses rotor destressing equipment. The rotor destressing equipment comprises a mounting surface, the driving rotating assembly and the driven rotating assembly are arranged on the mounting surface, the axes of the driving rotating assembly and the driven rotating assembly coincide, the driving rotating assembly drives the driven rotating assembly to rotate by driving a rotor, and the driven rotating assembly moves relative to the driving rotating assembly along the axis; after the clamping assembly clamps the rotor, the axis of the clamping assembly is coaxial with the driving rotating assembly; and the control assembly controls the driving rotating assembly to rotate, the position of the driven rotating assembly relative to the driving rotating assembly and the position of the clamping assembly relative to the driving rotating assembly. By arranging the active rotating assembly and the passive rotating assembly, circle run-out of the rotor in the rotating process is small, the vibration degree of the rotor in the high-speed rotating process is low, and the internal stress of the rotor is better removed; a PLC is arranged to control the motion state of the assembly through various sensor numerical values, automatic installation and automatic destressing of the rotor are achieved, and the installation precision and the testing efficiency of the rotor are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor stress relief, and in particular to a rotor stress relief device and a processing method. Background Art

[0002] In recent years, with the rapid development of the new energy vehicle industry, the requirements for motor rotors are also constantly increasing, especially in the preparation process of motors with speeds of 16000r / min to 18000r / min or even higher. The rotor needs to be tested for high-speed rotation. After the rotor assembly is assembled and installed, the internal stress of the rotor is not completely released. When it is put on the dynamic balancing machine for the first time for high-speed operation, the dynamic balance state of the rotor will be destroyed, and its imbalance will produce high-frequency vibration, which will affect the motor. The rotor can undergo a certain degree of plastic deformation under the action of relatively large centrifugal force through high-speed rotation test, so that the rotor can fully release the internal stress, so that when the rotor runs to this speed again, its imbalance will not change significantly, thereby extending its service life and reducing the motor failure rate.

[0003] Existing high-speed rotation test equipment tests by manually placing the rotor inside it. On the one hand, the accuracy of manual installation is low, which reduces the coaxiality between the axis of the rotor and the rotation axis of the high-speed rotation test equipment, thereby affecting the dynamic balance of the rotor during high-speed rotation, and further affecting its stress relief effect; on the other hand, manual testing is inefficient and has a low degree of automation. Summary of the invention

[0004] In order to solve the problems of high precision and automation of existing high-speed rotating test equipment, the present invention provides a rotor stress relief device and processing method. The specific technical scheme is as follows:

[0005] A rotor stress relief device comprises: a mounting assembly, which forms a vertical mounting surface; an active rotating assembly and a passive rotating assembly arranged on the mounting surface, whose axes coincide with each other, wherein the active rotating assembly drives the passive rotating assembly to rotate by driving a rotor, and the passive rotating assembly can move along the axis relative to the active rotating assembly, and the axis of the active rotating assembly is perpendicular to a horizontal plane; a clamping assembly for clamping a rotor, wherein the rotor axis is coaxial with the active rotating assembly after the clamping assembly clamps the rotor, and the clamping assembly can move along the axis relative to the active rotating assembly; and a control assembly, wherein the control assembly controls the rotation of the active rotating assembly, the position of the passive rotating assembly relative to the active rotating assembly, and the position of the clamping assembly relative to the active rotating assembly according to the position and rotation state of the rotor.

[0006] Furthermore, the active rotating component includes: an upper support arranged on the mounting surface; a transmission shaft arranged inside the upper support; an upper bearing seat arranged in the circumferential direction of the transmission shaft, the radial inner side surface of the upper bearing seat being connected to the radial outer side surface of the transmission shaft via a high-speed bearing; a drive shaft arranged at one end of the transmission shaft close to the passive rotating component, an upper spline hole for connecting to one end of the rotor being formed inside the drive shaft along the axis, at least three positioning columns being evenly distributed along the circumferential direction on the radial inner side surface of the upper spline hole, and the positioning columns being capable of limiting the left and right shaking of the rotor.

[0007] Furthermore, the active rotating component also includes: a high-speed main shaft arranged on the upper support, the high-speed main shaft outputs a rotational speed, the high-speed main shaft, the transmission shaft, and the drive shaft are all coaxial, and the high-speed main shaft drives the transmission shaft, the drive shaft and the rotor to rotate in turn; an upper vibration sensor arranged on the upper support; and a cooling component, which cools the high-speed main shaft through a water cooling pipe.

[0008] Furthermore, the passive rotating component includes: a lower support arranged on the mounting surface; a positioning shaft arranged inside the lower support, the positioning shaft having an end close to the active rotating component and formed along the axis with a lower spline hole for connecting with one end of the rotor; and a lower bearing seat arranged in the circumference of the positioning shaft, the radial inner side surface of the lower bearing seat being connected to the radial outer side surface of the positioning shaft via a high-speed bearing.

[0009] Preferably, the passive rotating component also includes: an infrared sensor arranged on a side of the lower support close to the active rotating component, the light released by the infrared sensor intersects with the axis of the rotor placed between the active rotating component and the passive rotating component; a gear plate arranged at one end of the positioning shaft away from the active rotating component, the radial outer side of the gear plate forms at least two tooth grooves along the axial direction; a speed sensor opposite to the tooth groove, the light released by the speed sensor intersects with the tooth groove; and a lower vibration sensor arranged on the lower support.

[0010] Preferably, the passive rotating component also includes: a first lifting cylinder connected to the lower support, the extension and retraction direction of the first lifting cylinder is parallel to the axial direction of the passive rotating component; and a first guide rail connecting the lower support and the mounting surface, the length direction of the first guide rail is parallel to the axial direction of the passive rotating component, and the first lifting cylinder drives the lower support to move along the first guide rail relative to the active rotating component.

[0011] Preferably, the clamping assembly includes: a second guide rail arranged on the mounting surface, the length direction of the second guide rail being parallel to the axial direction of the active rotating assembly; a clamping tool arranged on the second guide rail; a clamping cylinder arranged on the clamping tool, after the clamping cylinder clamps the rotor, the rotor is coaxial with the active rotating assembly; and a second lifting cylinder arranged on the mounting surface, the second lifting cylinder being able to drive the clamping tool to move relative to the active rotating assembly along the length direction of the second guide rail.

[0012] Preferably, the control component comprises: a PLC electrically connected to the active rotating component, the passive rotating component and the clamping component; and a display screen connected to the PLC, the display screen being able to display the motion state of the rotor.

[0013] Preferably, it also includes a protective component and a robot, the protective component including: a protective shell, an installation component, an active rotation component, a passive rotation component and a clamping component are arranged inside the protective shell; a protective door is arranged on the side of the protective shell, and the protective door can control the connectivity between the inside of the protective component and the outside world; the robot's gripper can pass the rotor through the protective door to reach the clamping position of the clamping component.

[0014] A method for machining a rotor using a rotor stress relief device, comprising:

[0015] S1: Adjust the coaxiality of the active rotating assembly, the passive rotating assembly and the clamping assembly;

[0016] S2: The robot grabs the rotor and delivers it to the clamping position of the clamping assembly. The clamping assembly clamps the rotor and moves upward to one end of the rotor and inserts it into the upper spline hole;

[0017] S3: The active rotating assembly drives the rotor to rotate at a low speed, and the passive rotating assembly approaches the active rotating assembly until the other end of the rotor is inserted into the lower spline hole, and the clamping assembly opens the clamping cylinder;

[0018] S4: The high-speed spindle drives the rotor to rotate at high speed until the display shows that the data of the upper vibration sensor and the lower vibration sensor exceed the set value, and the high-speed spindle stops rotating;

[0019] S5: The clamping assembly clamps the rotor and moves downward, the passive rotating assembly moves away from the active rotating assembly, and the robot grabs the de-stressed rotor and places it through the protective door into the storage area.

[0020] It can be seen from the above technical solution that the present invention has the following beneficial effects:

[0021] The present invention arranges a coaxial active rotating component and a passive rotating component with vertical axes, so that the circular runout of the rotor is small during rotation, and thus the vibration degree of the rotor is low during high-speed rotation, so that the internal stress of the rotor can be better removed and the dynamic balance of the rotor can be achieved. Secondly, a PLC is arranged to control the movement sequence and movement state of each component through the numerical values ​​of multiple sensors, so as to realize automatic installation of the rotor and automatic stress relief of the rotor, thereby improving the installation accuracy and testing efficiency of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention without the protection component;

[0023] Figure 2 is a cross-sectional view of an active rotating assembly;

[0024] Figure 3 is a cross-sectional view of a passive rotating component;

[0025] Figure 4 is a schematic diagram of the structure of the clamping assembly;

[0026] Figure 5 It is a schematic diagram of the structure of the protection component.

[0027] In the figure: 1. Mounting assembly; 2. Active rotating assembly; 3. Passive rotating assembly; 4. Clamping assembly; 5. Protection assembly; 6. Control assembly; 7. Robot; 8. Rotor; 11. Horizontal base; 12. Vertical support; 121. Threaded hole; 21. Upper support; 22. High-speed spindle; 23. Transmission shaft; 24. Upper bearing seat; 25. Drive shaft; 251. Upper spline hole; 252. Positioning bead; 26. Upper vibration sensor; 27 , cooling machine; 31, lower support; 32, positioning shaft; 321, lower spline hole; 33, lower bearing seat; 34, gear plate; 35, infrared sensor; 36, lower vibration sensor; 37, speed sensor; 38, first lifting cylinder; 39, first guide rail; 41, clamping tool; 42, clamping cylinder; 43, second lifting cylinder; 44, second guide rail; 51, protective shell; 52, protective door; 61, display screen; 62, PLC. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0030] Embodiment 1

[0031] like Figure 1As shown, the first embodiment includes: a mounting assembly 1, which forms a vertical mounting surface; an active rotating assembly 2 and a passive rotating assembly 3 whose axes coincide with each other, which are arranged on the mounting surface, wherein the active rotating assembly 2 drives the passive rotating assembly 3 to rotate by driving the rotor 8, and the passive rotating assembly 3 can move along the axis relative to the active rotating assembly 2, and the axis of the active rotating assembly 2 is perpendicular to the horizontal plane; a clamping assembly 4 for clamping the rotor 8, wherein the axis of the rotor 8 is coaxial with the active rotating assembly 2 after the clamping assembly 4 clamps the rotor 8, and the clamping assembly 4 can move along the axis relative to the active rotating assembly 2; and a control assembly 6, which controls the rotation of the active rotating assembly 2, the position of the passive rotating assembly 3 relative to the active rotating assembly 2, and the position of the clamping assembly 4 relative to the active rotating assembly 2 according to the position and rotation state of the rotor 8.

[0032] Specifically, the mounting surface of the mounting assembly 1 is a vertical surface perpendicular to the horizontal surface, and is connected to the active rotating assembly 2, the passive rotating assembly 3, and the clamping assembly 4 by bolts, so that the positions of the three are relatively fixed, and the axial positions of the three can be adjusted by adjusting the bolt positions of the three, so that the operator can adjust the coaxiality of the active rotating assembly 2, the passive rotating assembly 3 and the clamping assembly 4 in the initial state, thereby improving the coaxiality of the rotor 8 installed therein and the rotor 8, thereby improving the stress relief of the rotor 8 and achieving the effect of a dynamic balance state.

[0033] Secondly, the active rotating component 2 is fixed above the passive rotating component 3, one end of the rotor 8 is fixed on the active rotating component 2, and the other end is fixed on the passive rotating component 3, so that both ends of the rotor 8 are restricted from moving left and right, so that when the active rotating component 2 drives the rotor 8 to rotate at a high speed, the rotor 8 will not rotate eccentrically, and then the rotor 8 will vibrate greatly at a lower speed, and the internal stress cannot be completely removed. The axes of the active rotating component 2, the passive rotating component 3 and the rotor 8 coincide, so that the rotor 8 will not rotate eccentrically when rotating at a high speed, affecting the stress relief effect.

[0034] Secondly, the axial direction of the active rotating component 2 is in the vertical direction, so that the axial direction of the rotor 8 is in the vertical direction, and the gravity line of the rotor 8 coincides with the axis of the active rotating component 2. When the active rotating component 2 drives the rotor 8 to rotate, the side of the rotor 8 will not be subjected to pressure, thereby reducing the vibration during its high-speed rotation and improving the stress relief effect.

[0035] Secondly, when the control component 6 controls the clamping component 4 to clamp the rotor 8, the axis of the clamping component 4 coincides with the axis of the rotor 8, so that when the clamping component 4 moves the rotor 8 to the active rotating component 2 for installation, it only needs to ensure that the clamping component 4 is coaxial with the active rotating component 2 to ensure that the rotor 8 is coaxial with the active rotating component 2, so that the installation process of the rotor 8 is simple and the installation accuracy is high, which meets the assembly requirements and improves the stress relief effect of the rotor 8. Then the control component 6 controls the passive rotating component 3 to approach the other end of the rotor 8 until it is embedded in the through hole that fixes the rotor 8, so as to realize the automatic installation of the rotor 8 and ensure the installation accuracy and installation stability of the rotor 8, thereby improving the stability of the rotor 8 during high-speed rotation and thus improving the stress relief effect.

[0036] Secondly, the mounting assembly 1 includes a horizontal base 11 and a vertical support 12 fixedly connected to the horizontal base 11. The side surface of the vertical support 12 is a vertical mounting surface, and multiple rows and columns of through holes are formed on the mounting surface for placing bolts.

[0037] like Figure 2 As shown, the active rotating component 2 includes: an upper support 21 arranged on the mounting surface; a transmission shaft 23 arranged inside the upper support 21; an upper bearing seat 24 arranged in the circumference of the transmission shaft 23, and the radial inner side surface of the upper bearing seat 24 is connected to the radial outer side surface of the transmission shaft 23 through a high-speed bearing; a drive shaft 25 arranged at one end of the transmission shaft 23 close to the passive rotating component 3, and an upper spline hole 251 for connecting to one end of the rotor 8 is formed inside the drive shaft 25 along the axis, and at least three positioning columns are evenly distributed along the circumference on the radial inner side surface of the upper spline hole 251, and the positioning columns can limit the left and right shaking of the rotor 8.

[0038] Specifically, the upper support 21 is fixed to the mounting surface by bolts, and the relative position between the upper support 21 and the mounting surface is adjusted to keep the internal axis vertical, wherein the upper bearing seat 24 is fixedly connected to the upper support 21 by bolts so that the axis coincides, thereby making the interior of the upper bearing seat 24 have an interference fit with the high-speed bearing, so that the axis of the high-speed bearing remains vertical, thereby making the axis of the transmission shaft 23 fixed to the interior of the high-speed bearing by interference fit vertical, thereby reducing the axis jump of the transmission shaft 23 when the transmission shaft 23 rotates at high speed; secondly, the top end of the drive shaft 25 is fixedly connected to the bottom end of the drive shaft 23 by evenly distributed bolts, so that the drive shaft 25 The axis coincides with the axis of the transmission shaft 23, wherein the bottom end of the driving shaft 25 is also restricted from swinging left and right by the high-speed bearing, thereby reducing the axis jump of the driving shaft 25 when rotating at high speed, thereby reducing the axis jump of the upper spline hole 251. Furthermore, two rows of positioning columns are installed along the axis on the radial inner side of the upper spline hole 251, and the positioning columns roll and rub against the side of the upper spline hole 251, so that when the spline end of the rotor 8 is embedded in the upper spline hole 251, the circumferentially evenly distributed positioning columns are in contact with the radial outer side of the rotor 8, thereby exerting a supporting force thereon, thereby reducing the axis jump of the rotor 8 when rotating at high speed, thereby improving the stress relief effect.

[0039] Furthermore, the active rotating component 2 also includes: a high-speed main shaft 22 arranged on the upper support 21, the high-speed main shaft 22 outputs a rotation speed, the high-speed main shaft 22, the transmission shaft 23, and the drive shaft 25 are all coaxial, and the high-speed main shaft 22 drives the transmission shaft 23, the drive shaft 25 and the rotor 8 to rotate in turn; an upper vibration sensor 26 arranged on the upper support 21; and a cooling component, which cools the high-speed main shaft 22 through a water cooling pipe.

[0040] Specifically, the high-speed main shaft 22 can output high speed. It is fixedly connected to the top of the upper support 21 by bolts, and the high speed is transmitted to the transmission shaft 23 through the coupling, and then to the drive shaft 25 and the rotor 8. The high-speed main shaft 22 will generate a large amount of heat during the rotation process, and it needs to be cooled by water cooling. The cooling component transports the coolant to the high-speed main shaft 22 through the water cooling pipe to exchange heat and cool it, thereby ensuring the temperature of the high-speed main shaft 22 during operation and improving its service life; secondly, when the high-speed main shaft 22 drives the transmission shaft 23, the drive shaft 25 and the rotor 8 to rotate at a high speed, the rotor 8 will vibrate due to the imbalance of the rotor 8 and the existing axis deviation. The vibration is transmitted from the rotor 8 to the upper vibration sensor 26 through the solid, so that the upper vibration sensor 26 can monitor the vibration state of the rotor 8 in real time and transmit the data to the control component 6. When the vibration value exceeds the set value, the control component 6 stops the rotation of the high-speed main shaft 22 to complete the stress relief of the rotor 8.

[0041] like Figure 3As shown, the passive rotating component 3 includes: a lower support 31 arranged on the mounting surface; a positioning shaft 32 arranged inside the lower support 31, and the positioning shaft 32 is close to the active rotating component 2. One end forms a lower spline hole 321 along the axis for connecting with one end of the rotor 8; and a lower bearing seat 33 arranged in the circumference of the positioning shaft 32, and the radial inner side surface of the lower bearing seat 33 is connected to the radial outer side surface of the positioning shaft 32 through a high-speed bearing.

[0042] Specifically, the axis inside the lower support 31 is coaxial with the axis of the drive shaft 25, and the interior of the lower support 31 is fixedly connected to the lower bearing seat 33 by bolts. The lower bearing seat 33 is coaxial with the lower support 31, and then the lower bearing seat 33 is coaxial with the drive shaft 25, so that the axis of the high-speed bearing installed therein by interference fit is coaxial with the drive shaft 25, and then the positioning shaft 32 whose radial outer side is matched with the height bearing is coaxial with the drive shaft 25, so that the lower spline hole 321 at the top of the positioning shaft 32 is coaxial with the drive shaft 25, and then when the other spline end of the rotor 8 is installed in the lower spline hole 321, the axis of the rotor 8 is coaxial with the upper spline hole 251 and the lower spline hole 321, thereby improving the installation accuracy of the rotor 8 and thus improving the axis runout of the rotor 8 when it rotates at high speed.

[0043] Furthermore, the passive rotating component 3 also includes: an infrared sensor 35 arranged on a side of the lower support 31 close to the active rotating component 2, the light released by the infrared sensor 35 intersects with the axis of the rotor 8 placed between the active rotating component 2 and the passive rotating component 3; a toothed disc 34 arranged at one end of the positioning shaft 32 away from the active rotating component 2, the radial outer side of the toothed disc 34 forms at least two tooth grooves along the axial direction; a speed sensor 37 opposite to the tooth groove, the light released by the speed sensor 37 intersects with the tooth groove; and a lower vibration sensor 36 arranged on the lower support 31.

[0044] Specifically, a mounting plate fixedly connected to the mounting surface is provided at the top of the lower support 31, and a through hole is formed on the mounting plate to allow the lower support 31 to pass through, and a mounting bracket of the infrared sensor 35 and the infrared sensor 35 are fixedly connected to the top surface of the mounting plate by bolts, wherein the light emitted by the infrared sensor 35 is higher than the top surface of the lower support 31 and intersects with the axis of the rotor 8, so that the infrared sensor 35 can detect whether the lower support 31 has a rotor 8, that is, whether the bottom end of the rotor 8 is embedded in the lower spline hole 321. When the rotor 8 exists, the control component 6 controls the high-speed spindle 22 to rotate at a high speed to relieve stress; Secondly, the bottom end of the positioning shaft 32 is fixedly connected with a toothed disc 34 with axially formed teeth, so that when the positioning shaft 32 rotates, the teeth rotate accordingly, wherein the speed sensor 37 determines the speed of the positioning shaft 32 by detecting the number of teeth passed in unit time, and sends it to the control component 6. The control component 6 compares the speed of the speed sensor 37 with the speed of the high-speed main shaft 22. When the two are different, slippage occurs in the transmission route, affecting the rotation of the rotor 8. The control component 6 stops the rotation of the high-speed main shaft 22 in time, and the operator investigates and solves the fault, and then continues to rotate to relieve stress.

[0045] Secondly, the vibration generated when the rotor 8 rotates at high speed is transmitted to the lower vibration sensor 36 through the lower support 31, so that it can monitor the vibration condition of the bottom end of the rotor 8 in real time and transmit the data to the control component 6. The control component 6 combines the vibration values ​​of the lower vibration sensor 36 and the upper vibration sensor 26 to obtain the actual vibration condition of the rotor 8, and can thus better judge the timing of stopping the high-speed main shaft 22.

[0046] Furthermore, the passive rotating component 3 also includes: a first lifting cylinder 38 connected to the lower support 31, the extension and retraction direction of the first lifting cylinder 38 is parallel to the axial direction of the passive rotating component 3; and a first guide rail 39 connecting the lower support 31 and the mounting surface, the length direction of the first guide rail 39 is parallel to the axial direction of the passive rotating component 3, and the first lifting cylinder 38 drives the lower support 31 to move along the first guide rail 39 relative to the active rotating component 2.

[0047] Specifically, the lower support 31 is slidably connected to the first guide rail 39 through a slider, and the axial direction of the lower support 31 is the same as the length direction of the first guide rail 39, wherein the first guide rail 39 is fixedly installed on the mounting surface by bolts, and the angle of the length direction of the first guide rail 39 is adjusted by adjusting the position of the bolt relative to the bolt hole to make it vertical, thereby making the axis of the lower support 31 vertical, and by adjusting the position of the first guide rail 39 laterally, the lower support 31 can be coaxial with the drive shaft 25, so that the lower spline hole 321, the rotor 8, and the upper spline hole 251 are coaxial; secondly, the The telescopic end of a lifting cylinder 38 drives the lower support 31 to move up and down along the first guide rail 39, thereby causing the lower spline hole 321 to move up and down relative to the bottom end of the rotor 8, so that the top end of the rotor 8 is embedded in the upper spline hole 251. The control component 6 controls the first lifting cylinder 38 to drive the lower support 31 and then drives the lower spline hole 321 to cooperate with the bottom end of the rotor 8, so that both ends of the rotor 8 are restricted from shaking left and right, thereby improving the stability of the rotor 8 during high-speed rotation, so that the high-speed main shaft 22 can further increase the rotation speed, thereby fully releasing the internal stress of the rotor 8.

[0048] like Figure 4 As shown, the clamping assembly 4 includes: a second guide rail 44 arranged on the mounting surface, the length direction of the second guide rail 44 is parallel to the axial direction of the active rotating assembly 2; a clamping tool 41 arranged on the second guide rail 44; a clamping cylinder 42 arranged on the clamping tool 41, after the clamping cylinder 42 clamps the rotor 8, the rotor 8 is coaxial with the active rotating assembly 2; and a second lifting cylinder 43 arranged on the mounting surface, the second lifting cylinder 43 can drive the clamping tool 41 to move relative to the active rotating assembly 2 along the length direction of the second guide rail 44.

[0049] Specifically, the clamping fixture 41 is slidably connected to the second guide rail 44 through a slider, and the second guide rail 44 is fixedly installed on the mounting surface by bolts. It can adjust the deviation of its own length direction and the axial direction of the upper spline hole 251 by adjusting the position of the bolt relative to the bolt hole, so that after the clamping cylinder 42 fixedly connected to the clamping fixture 41 by bolts clamps the rotor 8, the axis of the rotor 8 can be coaxial with the upper spline hole 251, so that when the second lifting cylinder 43 drives the clamping fixture 41 and then drives the clamping cylinder 42 and the rotor 8 to move along the second guide rail 44, the axis of the rotor 8 clamped by the clamping cylinder 42 is always coaxial with the upper spline hole 251, and then the control component 6 can control the clamping cylinder 42 to embed the top of the rotor 8 into the upper spline hole 251 by controlling the second lifting cylinder 43.

[0050] Furthermore, the control component 6 includes: a PLC 62 electrically connected to the active rotating component 2, the passive rotating component 3, and the clamping component 4, the PLC 62 being capable of controlling the active rotating component 2 to rotate at a low speed, rotate at a high speed, and stop rotating; when the active rotating component 2 is rotating at a low speed, the PLC 62 being capable of controlling the passive rotating component 3 to be close to the active rotating component 2; and when the active rotating component 2 stops rotating, the PLC 62 being capable of controlling the clamping component 4 to be close to the active rotating component 2; and a display screen 61 connected to the PLC 62, the display screen 61 being capable of displaying the motion state of the rotor 8.

[0051] Specifically, PLC62 is electrically connected to the upper vibration sensor 26, the lower vibration sensor 36, the infrared sensor 35, and the speed sensor 37 of the first embodiment, so that it can comprehensively analyze the obtained values ​​and transmit the values ​​to the display screen 61 for display, thereby judging the actual operating status of the rotor 8, thereby maximizing the speed of the rotor 8 to remove internal stress and avoiding damage caused by excessive vibration of the rotor 8. The display screen 61 can also display the actual operating status of the active rotating component 2, the passive rotating component 3, and the clamping component 4, so that the operator can individually control each component through the display screen 61 to achieve different test functions.

[0052] like Figure 5 As shown, embodiment 1 also includes a protective component 5 and a robot 7, the protective component 5 includes: a protective shell 51, an installation component 1, an active rotation component 2, a passive rotation component 3 and a clamping component 4 are arranged inside the protective shell 51; a protective door 52 is arranged on the side of the protective shell 51, and the protective door 52 can control the connection between the inside of the protective component 5 and the outside world; the gripper of the robot 7 can pass the rotor 8 through the protective door 52 to the clamping position of the clamping component 4.

[0053] Specifically, the protective shell 51 forms a safe working space to prevent the rotor 8 from encountering unexpected situations when rotating at high speed and causing safety accidents. Secondly, the protective door 52 can be opened and closed automatically so that the control component 6 can control the robot 7 to automatically send the rotor 8 to the clamping component 4 for clamping, and the robot 7 takes the rotor 8 out of the clamping component 4. The operation accuracy of the robot 7 is higher than the manual installation accuracy, thereby improving the installation accuracy of the rotor 8, thereby reducing the influence of the axis deviation on the stress relief process, and realizing high-precision automatic loading and unloading and rotor 8 stress relief.

[0054] Embodiment 2

[0055] A method for machining the rotor 8 using the first embodiment, the specific steps are as follows, including:

[0056] S1: Adjust the coaxiality of the active rotating component 2, the passive rotating component 3 and the clamping component 4;

[0057] Specifically, before conducting a high-speed rotation test of the rotor 8, the operator installs the two ends of a round rod with a circular runout of 0.002 on the upper spline hole 251 and the lower spline hole 321 respectively, uses a micrometer to detect the circular runout of the rotating round rod, and then fine-tunes the positions of the first guide rail 39 and the upper support 21 on the mounting surface to make them coaxial; secondly, the clamping assembly 4 clamps the round rod and moves it upward until the top end of the round rod is close to the upper spline hole 251. The operator rotates the upper spline hole 251 to observe the change in position between it and the top side of the round rod, and fine-tunes the position of the first guide rail 39 on the mounting surface to make the round rod coaxial with the upper spline hole 251.

[0058] S2: The robot 7 grabs the rotor 8 and delivers it to the clamping position of the clamping assembly 4. The clamping assembly 4 clamps the rotor 8 and moves upward until one end of the rotor 8 is inserted into the upper spline hole 251;

[0059] Specifically, the robot 7 grabs the rotor 8 and passes through the protective door 52 into the interior of the protective shell 51, and sends the rotor 8 to the clamping position. The clamping cylinder 42 clamps the rotor 8, and the control component 6 controls the second lifting cylinder 43 to drive the clamping cylinder 42 to move upward until the top end of the rotor 8 is embedded in the upper spline hole 251, and the upper spline hole 251 limits the movement of the rotor 8 through the positioning bead 252.

[0060] S3: the active rotating assembly 2 drives the rotor 8 to rotate at a low speed, the passive rotating assembly 3 approaches the active rotating assembly 2 until the other end of the rotor 8 is inserted into the lower spline hole 321, and the clamping assembly 4 opens the clamping cylinder 42;

[0061] Specifically, the high-speed main shaft 22 drives the rotor 8 to rotate at a low speed, so that the spline at the bottom end of the rotor 8 rotates accordingly, and the control component 6 controls the first lifting cylinder 38 to drive the lower spline hole 321 to move upward until the spline at the bottom end of the rotating rotor 8 just matches the groove of the lower spline hole 321, so that the bottom end of the rotor 8 is embedded in the lower spline hole 321, and then the passive rotating component 3 fixes the position of the bottom end of the rotor 8, and the infrared sensor 35 detects the rotor 8 and notifies the control component 6 to control the clamping component 4 to release the clamping cylinder 42. At this time, the up and down degrees of freedom and the left and right degrees of freedom of the rotor 8 are restricted by the passive rotating component 3 and the active rotating component 2, and only the rotational degree of freedom is left.

[0062] S4: The high-speed spindle 22 drives the rotor 8 to rotate at a high speed until the display screen 61 shows that the data of the upper vibration sensor 26 and the lower vibration sensor 36 exceed the set value, and the high-speed spindle 22 stops rotating;

[0063] Specifically, the protective door 52 closes automatically, the height spindle gradually increases its speed to 20,000 r / min, the upper vibration sensor 26 and the lower vibration sensor 36 constantly detect the vibration conditions at the top and bottom ends of the rotor 8 and pass the data to PLC62, and PLC62 compares the speed of the positioning shaft 32 of the speed sensor 37 with the actual speed of the high-speed spindle 22 to determine whether there is slippage between the active rotating component 2 and the passive rotating component 3. When PLC62 combines the numerical values ​​of the upper vibration sensor 26 and the lower vibration sensor 36 to determine that the rotor 8 is in abnormal rotation at this time, PLC62 gradually stops the rotation of the high-speed spindle 22, and the high-speed rotation test of the rotor 8 is completed.

[0064] S5: The clamping assembly 4 clamps the rotor 8 and moves downward, the passive rotating assembly 3 moves away from the active rotating assembly 2, and the robot 7 grabs the de-stressed rotor 8 and passes through the protective door 52 to place it in the storage area.

[0065] Specifically, when the speed sensor 37 detects that the positioning shaft 32 stops rotating, and the upper vibration sensor 26 and the lower vibration sensor 36 detect that the rotor 8 stops vibrating, the rotor 8 is in a stationary state, and the PLC 62 controls the clamping assembly 4 to clamp the rotor 8 and move the passive rotating assembly 3 and the clamping assembly 4 downward, so that the clamping assembly 4 is separated from the passive rotating assembly 3 and the active rotating assembly 2 after clamping the rotor 8. When the clamping assembly 4 moves to the initial position, the robot 7 passes through the automatically opened protective door 52 of the rotor 8, and the clamping cylinder 42 is separated from the rotor 8. The robot 7 takes out the de-stressed rotor 8 and sends it to the designated storage position, realizing automatic loading and unloading, and automatically performing high-speed rotation test of the rotor 8, and automatically performing stress relief on the rotor 8, thereby improving installation accuracy and testing efficiency.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0067] The techniques, shapes, and structural parts not described in detail in the present invention are all well-known techniques.

Claims

1. A rotor stress relief device, characterized in that: include: A mounting assembly (1), the mounting assembly (1) forming a vertical mounting surface; An active rotating assembly (2) and a passive rotating assembly (3) are arranged on the mounting surface, and their axes coincide with each other. The active rotating assembly (2) drives the passive rotating assembly (3) to rotate by driving the rotor (8). The passive rotating assembly (3) can move along the axis relative to the active rotating assembly (2). The axis of the active rotating assembly (2) is perpendicular to a horizontal plane. a clamping assembly (4) for clamping a rotor (8); after the clamping assembly (4) clamps the rotor (8), the axis of the rotor (8) is coaxial with the active rotating assembly (2), and the clamping assembly (4) is capable of moving along the axis relative to the active rotating assembly (2); as well as A control component (6) controls the rotation of the active rotating component (2), the position of the passive rotating component (3) relative to the active rotating component (2), and the position of the clamping component (4) relative to the active rotating component (2) according to the position and rotation state of the rotor (8).

2. The rotor stress relief device according to claim 1, characterized in that: The active rotating assembly (2) comprises: An upper support (21) arranged on the mounting surface; A transmission shaft (23) disposed inside the upper support (21); An upper bearing seat (24) is arranged in the circumferential direction of the transmission shaft (23), wherein the radial inner side surface of the upper bearing seat (24) is connected to the radial outer side surface of the transmission shaft (23) via a high-speed bearing; A drive shaft (25) is arranged at one end of the transmission shaft (23) close to the passive rotating component (3), and an upper spline hole (251) for connecting with one end of the rotor (8) is formed inside the drive shaft (25) along the axis, and at least three positioning columns are evenly distributed along the circumferential direction on the radial inner side surface of the upper spline hole (251), and the positioning columns can limit the left and right shaking of the rotor (8).

3. The rotor stress relief device according to claim 2, characterized in that: The active rotating assembly (2) further comprises: A high-speed main shaft (22) is arranged on the upper support (21), the high-speed main shaft (22) outputs a rotation speed, the high-speed main shaft (22), the transmission shaft (23), and the drive shaft (25) are all coaxial, and the high-speed main shaft (22) drives the transmission shaft (23), the drive shaft (25), and the rotor (8) to rotate in sequence; an upper vibration sensor (26) disposed on the upper support (21); and A cooling component is used to cool the high-speed spindle (22) through a water cooling pipe.

4. The rotor stress relief device according to claim 1, characterized in that: The passive rotating assembly (3) comprises: A lower support (31) arranged on the mounting surface; A positioning shaft (32) is arranged inside the lower support (31), and a lower spline hole (321) is formed along the axis at one end of the positioning shaft (32) close to the active rotating component (2) for connecting with one end of the rotor (8); and A lower bearing seat (33) is arranged in the circumferential direction of the positioning shaft (32), and the radial inner side surface of the lower bearing seat (33) is connected to the radial outer side surface of the positioning shaft (32) via a high-speed bearing.

5. The rotor stress relief device according to claim 4, characterized in that: The passive rotating assembly (3) further comprises: an infrared sensor (35) disposed on a side of the lower support (31) close to the active rotating component (2), wherein light emitted by the infrared sensor (35) intersects with an axis of a rotor (8) disposed between the active rotating component (2) and the passive rotating component (3); A toothed disc (34) is arranged at one end of the positioning shaft (32) away from the active rotating component (2), wherein at least two tooth grooves are formed on a radial outer side surface of the toothed disc (34) along the axial direction; a rotation speed sensor (37) opposite to the tooth groove, wherein the light emitted by the rotation speed sensor (37) intersects with the tooth groove; and A lower vibration sensor (36) is arranged on the lower support (31).

6. The rotor stress relief device according to claim 5, characterized in that: The passive rotating assembly (3) further comprises: a first lifting cylinder (38) connected to the lower support (31), wherein the extension and retraction direction of the first lifting cylinder (38) is parallel to the axial direction of the passive rotating component (3); and A first guide rail (39) is connected between the lower support (31) and the mounting surface, wherein the length direction of the first guide rail (39) is parallel to the axial direction of the passive rotating component (3), and the first lifting cylinder (38) drives the lower support (31) to move along the first guide rail (39) relative to the active rotating component (2).

7. The rotor stress relief device according to claim 1, characterized in that: The clamping assembly (4) comprises: a second guide rail (44) disposed on the mounting surface, wherein the length direction of the second guide rail (44) is parallel to the axial direction of the active rotating component (2); A clamping tool (41) disposed on the second guide rail (44); A clamping cylinder (42) disposed on the clamping fixture (41), wherein the clamping cylinder (42) clamps the rotor (8) so that the rotor (8) is coaxial with the active rotating assembly (2); and A second lifting cylinder (43) is arranged on the mounting surface, and the second lifting cylinder (43) can drive the clamping tool (41) to move relative to the active rotating component (2) along the length direction of the second guide rail (44).

8. The rotor stress relief device according to claim 1, characterized in that: The control component (6) comprises: a PLC (62) electrically connected to the active rotating assembly (2), the passive rotating assembly (3) and the clamping assembly (4), the PLC (62) being capable of controlling the active rotating assembly (2) to rotate at a low speed, a high speed and to stop rotating; when the active rotating assembly (2) is rotating at a low speed, the PLC (62) is capable of controlling the passive rotating assembly (3) to approach the active rotating assembly (2); when the active rotating assembly (2) stops rotating, the PLC (62) is capable of controlling the clamping assembly (4) to approach the active rotating assembly (2); and A display screen (61) connected to the PLC (62) is capable of displaying the motion state of the rotor (8).

9. The rotor stress relief device according to claim 1, characterized in that: It also includes a protection component (5) and a robot (7), wherein the protection component (5) includes: A protective shell (51), wherein the mounting assembly (1), the active rotating assembly (2), the passive rotating assembly (3) and the clamping assembly (4) are arranged inside the protective shell (51); a protective door (52) disposed on a side of the protective housing (51), the protective door (52) being capable of controlling the communication between the interior of the protective assembly (5) and the outside; The gripper of the robot (7) is capable of moving the rotor (8) through the protective door (52) to the gripping position of the gripping assembly (4).

10. A method for machining a rotor (8) using the rotor stress relief device according to any one of claims 1 to 9, characterized in that: include: S1: Adjust the coaxiality of the active rotating assembly, the passive rotating assembly and the clamping assembly; S2: The robot grabs the rotor and delivers it to the clamping position of the clamping assembly. The clamping assembly clamps the rotor and moves upward to one end of the rotor and inserts it into the upper spline hole; S3: The active rotating assembly drives the rotor to rotate at a low speed, and the passive rotating assembly approaches the active rotating assembly until the other end of the rotor is inserted into the lower spline hole, and the clamping assembly opens the clamping cylinder; S4: The high-speed spindle drives the rotor to rotate at high speed until the display shows that the data of the upper vibration sensor and the lower vibration sensor exceed the set value, and the high-speed spindle stops rotating; S5: The clamping assembly clamps the rotor and moves downward, the passive rotating assembly moves away from the active rotating assembly, and the robot grabs the de-stressed rotor and places it through the protective door into the storage area.

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