Correcting equipment for motor rotor rotating shaft runout

Abstract

The utility model discloses a correction device for motor rotor rotating shaft runout, which comprises a bottom plate, a bearing mechanism, a prying mechanism, a dial indicator, a stop mechanism and a motor rotor, the bearing mechanism, the prying mechanism, the dial indicator, the stop mechanism and the motor rotor are arranged on the bottom plate, the bearing mechanism is provided with a bearing space, and the motor rotor is rotatably arranged on the bearing space. The prying end of the prying mechanism is located below a long shaft of a motor rotating shaft, the prying end of the prying mechanism can swing in the vertical direction and is used for achieving correction operation of the motor rotating shaft, the stop mechanism comprises an air cylinder and a pressing block installed at the output end of the air cylinder, and the pressing block is perpendicular to the motor rotating shaft. The pressing block is configured to abut against the top face of the end, facing the bearing mechanism, of the long shaft of the motor rotating shaft when the air cylinder is in the stretching state. According to the utility model, a measurement mode and a correction mode are integrated, and the long shaft end is independently corrected through a lever type prizing correction structure, so that the correction is efficient, labor-saving and stable.

Description

Technical Field

[0001] This utility model belongs to the field of motor shaft correction technology, specifically a correction device for motor rotor shaft runout. Background Technology

[0002] Press-fitting the motor shaft to the rotor is a common assembly technique that uses an interference fit to fix the shaft to the rotor. Press-fitting creates a tighter connection between the shaft and rotor, reducing relative movement between them and thus improving the stability and durability of the motor.

[0003] Currently, during the tight fitting process between the shaft and rotor, due to the longer length of one end of the shaft, deformation of the shaft often occurs after assembly (e.g., Figure 6 As shown in the figure, excessive radial / axial runout of the rotor shaft can jeopardize the operation of the motor after assembly. Therefore, it is essential to correct the bending deformation of the rotor shaft after it is inserted into the shaft. Currently, the correction pressure is mainly applied to the outer circumference of the rotor, i.e., pressing down on the outer circumference of the rotor to achieve correction (e.g., ...). Figure 7 As shown in the figure, although shaft runout can be corrected, it will increase rotor runout. Secondly, the existing correction tooling mainly adopts the horizontal pressing method, which is not labor-saving and has low efficiency during the pressing process, and there is still room for improvement. Utility Model Content

[0004] The purpose of this invention is to provide a device for correcting the runout of a motor rotor shaft in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: A correction device for motor rotor shaft runout includes a base plate and a bearing mechanism, a prying mechanism, a dial indicator, a stop mechanism, and a motor rotor disposed on the base plate. The bearing mechanism has a bearing space, and the motor rotor is rotatably disposed on the bearing space. The prying end of the prying mechanism is located below the long axis of the motor shaft, and the prying end of the prying mechanism can swing in the up and down direction to realize the correction operation of the motor shaft. The stop mechanism includes a cylinder and a pressure block installed at the output end of the cylinder. The pressure block is arranged perpendicularly to the motor shaft. The pressure block is configured such that when the cylinder is in the extended state, the pressure block can press against the top surface of the end of the motor shaft facing the bearing mechanism.

[0006] In a preferred embodiment, the prying mechanism includes a bracket, a pry bar, and rollers. The pry bar is rotatably mounted on the bracket, and a spring is installed between the opposite end faces of the pry bar and the bracket. The length of the pry bar in the downward pressing direction is longer than the length of the pry bar in the prying direction.

[0007] In a preferred embodiment, the roller is rotatably disposed at one end of the pry bar facing the bearing mechanism and located below the long axis of the motor shaft. The outer circumference of the roller is recessed inward to form an annular groove, and the annular groove is on the same vertical plane as the motor shaft.

[0008] In a preferred embodiment, the support mechanism includes a first support plate and a second support plate arranged at intervals and opposite to each other. The first support plate and the second support plate together form a receiving space for accommodating the motor rotor. The tops of the first support plate and the second support plate are recessed to form V-shaped grooves for overlapping the motor shaft.

[0009] In a preferred embodiment, the second support plate has a positioning block protruding upward from the end face of the pressure block, and the positioning block has a through opening that allows the pressure block to pass through.

[0010] In a preferred embodiment, the second support plate, the first support plate, and one bottom end of the bracket all extend outward to form a horizontal mounting portion. The bottom of the horizontal mounting portion protrudes downward to form a guide block. The top of the base plate has a T-shaped groove along the length direction to allow the guide block to slide. The horizontal mounting portion also has a through hole along the vertical direction. The horizontal mounting portion and the base plate can be locked together by a locking member passing through the through hole.

[0011] In a preferred embodiment, the base plate is further provided with a control box and a sensor. Both the cylinder and the sensor are controlled by the control box. The sensing end of the sensor is located on the side of the pry bar. The sensor is configured to detect a signal when the pry bar is pressed down a certain distance.

[0012] In a preferred embodiment, the probe end of the dial indicator abuts against the top surface of the long shaft of the motor shaft to measure the axial runout value of the motor shaft. An adjustable bracket connected to the dial indicator is also provided on the base plate.

[0013] In a preferred embodiment, the outer surface of the end of the pry bar facing away from the bearing mechanism is provided with anti-slip texture.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the measurement and calibration methods are integrated into one, which can simultaneously realize the monitoring of motor shaft runout data and the calibration operation of motor shaft, improve the calibration accuracy, and set the calibration force position at the long shaft end of the shaft, so that the shaft is subjected to force alone. During the calibration process, the motor rotor does not need to be subjected to force, thus ensuring the calibration quality and efficiency of the motor shaft.

[0016] 2. In this utility model, a lever-type correction structure is adopted, which can generate a large prying force with a small force during operation, making correction more labor-saving. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the second bearing plate in this utility model;

[0019] Figure 3 This is a schematic diagram of the planar structure of the bottom plate of this utility model from the side.

[0020] Figure 4 This is a three-dimensional structural diagram of the pry bar in this utility model;

[0021] Figure 5 This is a cross-sectional planar structural diagram of the roller in this utility model;

[0022] Figure 6 This is a simplified structural diagram of the existing technology after the rotating shaft and rotor are tightly fitted together.

[0023] Figure 7 This is a simplified structural diagram of the existing technology for correcting the rotor shaft of a motor.

[0024] The markings in the diagram are: 1-base plate, 101-T-slot, 2-control box, 3-cylinder, 4-adjustable bracket, 5-dial indicator, 6-pressure block, 7-second bearing plate, 71-V-slot, 72-through port, 73-horizontal mounting part, 74-guide block, 8-roller, 81-annular groove, 9-pry bar, 91-anti-slip texture, 10-sensor, 11-bracket, 12-spring, 13-motor rotor, 14-motor shaft. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Reference Figure 1-7 A device for correcting runout of a motor rotor shaft includes a base plate 1, a support mechanism, a prying mechanism, a dial indicator 5, a stop mechanism, and a motor rotor mounted on the base plate 1. The support mechanism has a support space, on which the motor rotor 13 is rotatably mounted. The prying end of the prying mechanism is located below the long axis of the motor shaft 14, and the prying end of the prying mechanism can swing vertically to perform a correction operation on the motor shaft 14. The stop mechanism includes a cylinder 3 and a pressure block 6 mounted on the output end of the cylinder 3, the pressure block 6 being perpendicular to the motor shaft 14. The pressure block 6 is configured such that when the cylinder 3 is in the extended state, the pressure block 6 can press against the top surface of the end of the motor shaft 14 facing the bearing mechanism. This reduces the measurement and correction method by making it an integrated unit, which can simultaneously realize the monitoring and correction of the shaft runout data of the motor shaft 14, improve the correction accuracy, and set the correction force position at the end of the long shaft of the motor shaft 14. Before correction, the pressure block 6 presses against the motor shaft 14, so that the shaft is subjected to force alone during the correction process, and the motor rotor 13 does not need to be subjected to force, which can ensure the correction quality of the motor shaft 14.

[0029] In this embodiment, refer to Figure 1 and Figure 4 As shown, the prying mechanism includes a bracket 11, a pry bar 9, and a roller 8. The pry bar 9 is rotatably mounted on the bracket 11. A spring 12 is also installed between the opposite end faces of the pry bar 9 and the bracket 11. The length of the pry bar 9 in the downward pressing direction is longer than the length of the prying direction. The lever-type correction structure can generate a large prying force with a small force during operation, making correction more effortless. After correction, the spring force of the spring 12 can also realize the self-resetting operation of the pry bar 9 position.

[0030] In this embodiment, refer to Figure 5 As shown, the roller 8 is rotatably mounted at the end of the pry bar 9 facing the bearing mechanism and located below the long axis of the motor shaft 14. The outer circumference of the roller 8 is recessed inward to form an annular groove 81. The annular groove 81 and the motor shaft 14 are on the same vertical plane. When prying, the annular groove 81 of the roller 8 contacts the motor shaft 14. Under the guidance and positioning effect of the annular groove 81, the roller 8 can synchronously drive the motor shaft 14 to move along the upward direction of the roller 8 during its upward movement, thus avoiding the problem of skewing during the correction process of the motor shaft 14.

[0031] In this embodiment, refer to Figure 2 As shown, the support mechanism includes a first support plate and a second support plate 7 arranged at intervals and opposite to each other. The first support plate and the second support plate 7 together form a receiving space for accommodating the motor rotor 13. The tops of the first support plate and the second support plate 7 are recessed to form V-shaped grooves 71 for overlapping the motor shaft 14. The designed V-shaped grooves 71 can realize the overlapping operation of motor shafts 14 of various sizes, and are applicable to a wider range of scenarios.

[0032] In this embodiment, refer to Figure 2 As shown, the second bearing plate 7 protrudes upward from the end facing the pressure block 6 to form a positioning block. The positioning block has a through-hole 72 that allows the pressure block 6 to pass through. The through-hole 72 can help limit the movement position of the pressure block 6 and can also be subjected to force synchronously with the pressure block 6 itself, reducing the impact on the pressure block 6 and the cylinder 3 during prying. In addition, a set of lifting cylinders can be designed below the cylinder 3.

[0033] In this embodiment, refer to Figures 1-3 As shown, the second support plate 7, the first support plate, and the bottom end of the bracket 11 all extend outward to form a horizontal mounting part 73. The bottom of the horizontal mounting part 73 protrudes downward to form a guide block 74. The top of the base plate 1 has a T-shaped groove 101 along the length direction to allow the guide block 74 to slide. The horizontal mounting part 73 also has a through hole along the vertical direction. The horizontal mounting part 73 and the base plate 1 can be locked together by a locking piece (not shown in the figure) passing through the through hole. The above design can adjust the spacing of the support mechanism itself and the distance between the prying mechanism and the support mechanism according to the different sizes of the motor shaft 14 and the motor rotor 13, which can increase the overall applicability. Moreover, by using the guiding cooperation of the guide block 74 and the T-shaped groove 101, it can also be ensured that they are still on the same horizontal axis after adjustment.

[0034] Specifically, the locking component adopts a bolt and nut locking structure. The bolt passes through the T-slot 101 and the through hole in sequence, and then the nut is used to lock the bolt, which can realize the combined positioning operation. When the spacing needs to be adjusted, simply loosen the nut.

[0035] In this embodiment, refer to Figure 1 As shown, a control box 2 and a sensor 10 are also provided on the base plate 1. Both the cylinder 3 and the sensor 10 are controlled by the control box 2. The sensing end of the sensor 10 is located on the side of the pry bar 9. The sensor 10 is configured to sense a signal when the pry bar 9 is pressed down a certain distance. The above design can realize the automatic pressing and positioning operation of the motor shaft 14 before prying and correction, which is more labor-saving and convenient.

[0036] Specifically, the sensor 10 is preferably a proximity switch, but this is not limited here. At the same time, the specific position of the sensor 10 is designed so that after the pry bar 9 is pressed down a certain distance, the roller 8 is not in contact with the motor shaft 14, so as to avoid the calibration operation of the motor shaft 14 before sensing. This is not limited here.

[0037] In this embodiment, refer to Figure 1 As shown, the measuring rod end of dial indicator 5 abuts against the top surface of the long shaft of motor shaft 14 to measure the axial runout value of motor shaft 14. An adjustable bracket 4 connected to dial indicator 5 is also provided on the base plate 1. Specifically, the adjustable bracket 4 includes a guide rod arranged along three-dimensional space and a guide seat that can slide on the guide rod. The guide seat at the end is connected to dial indicator 5. The guide seat can be attached to the guide rod by means of screws. The position of dial indicator 5 can be adjusted according to the actual application scenario. The specific adjustment method and assembly structure are not described here.

[0038] In this embodiment, refer to Figure 4 As shown, the outer surface of the end of the pry bar 9 facing away from the bearing mechanism is provided with anti-slip texture 91. The designed anti-slip texture 91 can increase the friction when the operator holds the pry bar 9, reduce the possibility of slippage during the prying process, and thus improve the safety during the calibration operation.

[0039] Methods for correcting motor rotor shaft runout:

[0040] 1. After the rotor is inserted into the shaft, it is placed on the V-groove 71 of the bearing mechanism. Rotate the rotor and use a dial indicator 5 to check the shaft runout data at the long shaft end;

[0041] 2. Rotate the bent and deformed shaft so that it faces downwards;

[0042] 3. Press the pry bar 9 down, the sensor 10 receives the signal, sends the signal to the control box 2, triggering the cylinder 3 to push out;

[0043] 4. Cylinder 3 pushes out, causing pressure block 6 to press against motor shaft 14;

[0044] 5. The lever 9 continues to move downwards, and using the lever principle, the front roller 9 pushes the rotating shaft upwards to make corrections until the shaft runout reaches the set range, thus completing the correction operation.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for correcting rotor shaft runout of a motor, characterized in that, The device includes a base plate and a support mechanism, a prying mechanism, a dial indicator, a stop mechanism, and a motor rotor mounted on the base plate. The support mechanism has a support space, and the motor rotor is rotatably mounted on the support space. The prying end of the prying mechanism is located below the long axis of the motor shaft, and the prying end of the prying mechanism can swing up and down to achieve the correction operation of the motor shaft. The stop mechanism includes a cylinder and a pressure block installed at the output end of the cylinder. The pressure block is perpendicular to the motor shaft and is configured such that when the cylinder is in the extended state, the pressure block can press against the top surface of the end of the motor shaft facing the support mechanism.

2. The device for correcting rotor shaft runout of a motor as described in claim 1, characterized in that: The prying mechanism includes a bracket, a pry bar, and rollers. The pry bar is rotatably mounted on the bracket. A spring is also installed between the opposite end faces of the pry bar and the bracket. The length of the pry bar in the downward pressing direction is longer than the length of the pry bar in the prying direction.

3. The device for correcting rotor shaft runout of a motor as described in claim 2, characterized in that: The roller is rotatably mounted at one end of the pry bar facing the bearing mechanism and located below the long axis of the motor shaft. The outer circumference of the roller is recessed inward to form an annular groove, and the annular groove is on the same vertical plane as the motor shaft.

4. The device for correcting rotor shaft runout of a motor as described in claim 2, characterized in that: The supporting mechanism includes a first supporting plate and a second supporting plate arranged at intervals and opposite to each other. The first supporting plate and the second supporting plate together form a receiving space for accommodating the motor rotor. The tops of the first supporting plate and the second supporting plate are recessed to form V-shaped grooves for overlapping the motor shaft.

5. The device for correcting rotor shaft runout of a motor as described in claim 4, characterized in that: The second support plate has a positioning block protruding upward from the end face of the pressure block, and the positioning block has a through opening that allows the pressure block to pass through.

6. The device for correcting rotor shaft runout of a motor as described in claim 5, characterized in that: The second support plate, the first support plate, and one bottom end of the bracket all extend outward to form a horizontal mounting part. The bottom of the horizontal mounting part protrudes downward to form a guide block. The top of the base plate has a T-shaped groove along the length direction to allow the guide block to slide. The horizontal mounting part also has a through hole along the vertical direction. The horizontal mounting part and the base plate can be locked together by a locking member passing through the through hole.

7. The device for correcting rotor shaft runout of a motor as described in claim 2, characterized in that: The base plate is also equipped with a control box and a sensor. Both the cylinder and the sensor are controlled by the control box. The sensing end of the sensor is located on the side of the pry bar. The sensor is configured to detect a signal when the pry bar is pressed down a certain distance.

8. The device for correcting rotor shaft runout of a motor as described in claim 1, characterized in that: The probe end of the dial indicator abuts against the top surface of the long shaft of the motor shaft to measure the axial runout value of the motor shaft. An adjustable bracket connected to the dial indicator is also provided on the base plate.

9. The device for correcting rotor shaft runout of a motor as described in claim 2, characterized in that: The outer surface of the end of the pry bar facing away from the bearing mechanism is provided with anti-slip texture.

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