Motor rotor defect detection device and detection method

Abstract

The present invention relates to the field of motor rotor detection technology, specifically to a motor rotor defect detection device and detection method, including a truncated table, the top of which is fixedly provided with two limit posts that match the rotor. This motor rotor defect detection device and detection method, abuts against the inner ring of the rotor through a paddle, and then drives the turntable to rotate, so that the paddle fits the rotor to perform circular motion. During this process, the concave and convex of the inner ring of the rotor pushes the shaft to rotate in the opposite direction of the paddle. At this time, the rotation sensor records the shaft deflection data and is used to detect the concave and convex of the inner ring of the rotor. Compared with the existing scanning detection using sound waves, the above-mentioned paddle first uses physical contact to fully reflect the concave and convex conditions of the inner ring of the rotor, and then uses the shaft to convert and read data. On the one hand, it avoids the blind area of ​​sound wave detection and ensures the detection effect. On the other hand, it can isolate the precision sensor from the rotor area, which can effectively reduce the possibility of accidental damage to the sensor during rotor disassembly.

Description

Technical Field

[0001] The present invention relates to the technical field of motor rotor detection, and in particular to a motor rotor defect detection device and a detection method. Background Art

[0002] The quality of the motor rotor seriously affects the stability, safety and life of the motor. Common motor rotors need to be tested and inspected after production. During the molding or later polishing of the rotor, the inner wall will have rows and protrusions and concave surfaces. The existing quality inspection adopts two simple forms of manual observation with the naked eye or finger touch. This is a heavy burden on the operator and is very harmful to the fingers. In addition, this method is inefficient and the quality inspection effect is not obvious. The internal space of the rotor is small and an annular surface is set. There are blind spots in the use of acoustic wave detection. Compared with the manual method, the efficiency is not much worse.

[0003] The existing patent (Announcement No.: CN113063853B) discloses a generator rotor inner hole acoustic wave flaw detection system and detection method. It includes: an operating shell, the upper and lower sides of the operating shell are rotatably connected to handles, the handle, the tail end of the handle is provided with a fastening ring, and the right side of the operating shell is connected to an annular shell. The above-mentioned prior art relies on acoustic wave detection for concave and convex detection, which is prone to the blind spots it claims, and no solution is given. At the same time, the external detection element is prone to damage.

[0004] In view of this, we propose a motor rotor defect detection device and detection method. Summary of the invention

[0005] The purpose of the present invention is to provide a motor rotor defect detection device and detection method, so as to solve the problem that the prior art relies on acoustic wave detection for concave-convex detection in the above background technology, which is prone to the blind spots it claims, and no solution is given, and the external detection element is prone to damage. In order to achieve the above purpose, the present invention provides the following technical solutions: a motor rotor defect detection device, including a truncated table, the top of which is fixedly provided with two limit columns that match the rotor, and a circular groove is opened on the truncated table, a turntable is rotatably connected in the circular groove, and a detector is arranged on the turntable.

[0006] The detector includes two inner columns fixedly arranged on a turntable, and the two inner columns are symmetrically distributed along the center of the turntable, a column groove is provided on the outer side of the surface of the inner column, and a rotating shaft is rotatably connected in the column groove, a notch is provided on the top of the rotating shaft, and a first torsion spring is arranged in the notch, and the two ends of the first torsion spring are respectively connected to the rotating shaft and the column groove.

[0007] A paddle is fixedly arranged on the surface of the rotating shaft, and the bottom end of the rotating shaft passes through the rotating disk and extends to the outside. A rotation amount sensor matched with the rotating shaft is fixedly arranged on the bottom of the rotating disk.

[0008] The paddle and the rotating disk are provided with self-biasing components.

[0009] Preferably, the self-biasing assembly includes a pressure ring surrounding the outside of the two inner columns, and a top spring is provided between the bottom of the pressure ring and the middle of the turntable, and the top spring pushes the pressure ring to move upward.

[0010] An inner hole is provided inside the plectrum, a control rod matched with the plectrum is fixedly arranged on the top of the pressure ring, and the control rod is movably inserted into the inner hole.

[0011] A bevel is cut on the top of the paddle, and a flip piece is arranged at the bevel, a notch is opened in the bevel, a connecting shaft is fixedly arranged on the side surface of the flip piece, and the flip piece is rotatably connected in the notch through the connecting shaft, a second torsion spring is arranged at the connection between the connecting shaft and the notch, and the second torsion spring pushes the flip piece to align with the paddle.

[0012] The inside of the bevel is provided with an oblique groove connected with the inner hole, and a triangular plate matched with the control rod is slidably connected in the oblique groove. The surface of the connecting shaft is provided with a spiral groove, and a protrusion embedded in the spiral groove is fixedly arranged on the triangular plate.

[0013] The round table and the turntable are provided with quick ejection components.

[0014] Preferably, the quick ejection assembly includes a slide groove opened along the inner side of the limiting column and in the truncated table, and a rotor support plate is slidably connected in the slide groove. A spring is arranged in the slide groove, and the spring pushes the rotor support plate to move up.

[0015] An embedding groove is provided on the inner side wall of the slide groove, and an oblique caliper matched with the rotor support plate is slidably connected in the embedding groove. A side spring is arranged in the embedding groove, and the side spring pushes the oblique caliper to move toward the slide groove.

[0016] The inner ring of the circular groove is provided with an annular groove connected with the sliding groove, and the outer ring of the rotating disk is fixedly provided with a push arm, and the push arm extends into the annular groove to cooperate with the oblique caliper.

[0017] Preferably, a plurality of balls are rollingly embedded on the side of the paddle.

[0018] Preferably, a guide column is movably inserted into the surface of the turntable, and the guide column is fixedly connected to the pressure ring.

[0019] Preferably, the push arm is movably plugged into the side of the turntable, and the turntable is provided with bolts for fixing the push arm.

[0020] Preferably, the side surface of the oblique-mouth caliper is provided with a curved opening that matches the push arm.

[0021] A detection method for a motor rotor defect detection device comprises the following steps:

[0022] S1. Place the rotor on the round table from top to bottom, insert the limit column into the outer side of the rotor for limiting, insert the inner column into the inner ring of the rotor, use the first torsion spring to push the paddle to contact the inner ring of the rotor by the rotating shaft, and then drive the turntable to rotate, so that the paddle fits the rotor to perform circular motion. During this process, the concave and convex of the inner ring of the rotor push the rotating shaft to rotate in the opposite direction of the paddle. At this time, the rotation amount sensor records the deflection data of the rotating shaft and is used to detect the concave and convex of the inner ring of the rotor;

[0023] S2. The pressure ring moves upward under the action of the top spring, driving the control rod to push the triangular plate to move obliquely upward, and uses the convex block to push the flip piece away from the paddle along the spiral groove to form a slope. When the rotor is inserted on the outer side of the inner column, the inner ring of the rotor contacts the above slope, squeezes the paddle and deflects the shaft, so that the paddle can be tilted and pressed against the inner ring of the rotor. When the rotor is lowered, it pushes the pressure ring downward to release the control of the flip piece, and the flip piece is reset to align with the paddle. At this time, the rotor cannot be installed on the round table;

[0024] S3. During the installation process of the rotor moving downward along the outer side of the inner column, the rotor contacts the rotor support plate and pushes it downward synchronously until the rotor support plate moves down to the bottom and is clamped by the oblique caliper. When the turntable rotates 180° to drive the two paddles to detect the inner ring of the rotor, the push arm on the side surface of the turntable synchronously squeezes the oblique caliper in a circular motion, causing it to retract into the groove and unlock the rotor support plate, so that the spring pushes the rotor support plate and the rotor upward.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] In the present invention, the paddle is abutted against the inner ring of the rotor, and then the turntable is driven to rotate, so that the paddle fits the rotor to perform circular motion. During this process, the convex and concave of the inner ring of the rotor push the rotating shaft to rotate in the opposite direction of the paddle. At this time, the rotation sensor records the deflection data of the rotating shaft and is used to detect the convex and concave of the inner ring of the rotor. Compared with the existing scanning detection using sound waves, the paddle first uses physical contact to fully reflect the convex and concave conditions of the inner ring of the rotor, and then uses the rotating shaft to convert and read the data. On the one hand, it avoids the blind area of ​​sound wave detection and ensures the detection effect. On the other hand, it can isolate the precision sensor from the rotor area, which can effectively reduce the possibility of accidental damage to the sensor during rotor disassembly and assembly.

[0027] In the present invention, a slope is formed by deviating the flip piece from the paddle. When the rotor is inserted on the outer side of the inner column, the inner ring of the rotor contacts the above slope and squeezes the paddle and the shaft to deflect, so that the paddle can be tilted and pressed against the inner ring of the rotor. When the rotor is lowered, it pushes the pressure ring to move downward to release the control of the flip piece, and the flip piece is reset to be aligned with the paddle. At this time, the rotor cannot be loaded on the round table. Compared with manually pushing the paddle in advance, the above flip piece can be flipped to form a slope when the round table is empty, and the automatic deflection and abutment of the paddle can be realized by utilizing the downward movement of the rotor. No manual operation is required, the use convenience is good, and the working efficiency is improved. After the rotor is placed on the round table, the deflection piece is reset to prevent the placement of another rotor, which can effectively avoid the influence of illegal and erroneous operations on normal detection, and has better working safety.

[0028] In the present invention, the rotor support plate moves down to the bottom and is clamped by the oblique caliper. When the turntable rotates 180° to drive the two paddles to detect the inner ring of the rotor, the push arm on the side surface of the turntable synchronously squeezes the oblique caliper in a circular motion, causing it to retract into the groove and unlock the rotor support plate, so that the spring pushes the rotor support plate and the rotor to move upward. Compared with the existing method of removing the rotor from the fixed component, the above-mentioned rotor support plate can be automatically unlocked by the push arm linked to the detection operation after the detection is completed, and the rotor can be ejected from the detection area. The operator only needs to pick up the rotor. On the one hand, it can reduce the operation process and improve the detection efficiency. On the other hand, it can reduce the workload of the operator and correspondingly increase the detection amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the truncated table and the limiting column of the present invention;

[0031] Figure 3 It is a three-dimensional structural cross-sectional view of the truncated cone of the present invention;

[0032] Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle;

[0033] Figure 5 It is a structural schematic diagram of the turntable and the inner column of the present invention;

[0034] Figure 6 For the present invention Figure 5 The enlarged view of point B in the middle;

[0035] Figure 7 A bottom view of the turntable and the inner column of the present invention;

[0036] Figure 8 It is a three-dimensional structural cross-sectional view of the turntable and the inner column of the present invention;

[0037] Fig. 9 For the present invention Figure 8 Enlarged view of point C in the middle;

[0038] Fig.10 For the present invention Figure 8 Enlarged view of point D in the middle.

[0039] In the figure: 1, round table; 2, limit column; 3, round groove; 4, turntable; 5, detector; 51, inner column; 52, column groove; 53, rotating shaft; 54, notch; 55, first torsion spring; 56, paddle; 57, rotation amount sensor; 58, self-biasing component; 581, pressure ring; 582, top spring; 583, inner hole; 584, control rod; 585, bevel edge; 586, flip sheet; 587, notch; 5 88. connecting shaft; 589. second torsion spring; 5810. oblique groove; 5811. triangular plate; 5812. spiral groove; 5813. protrusion; 5814. quick ejection assembly; 58141. slide groove; 58142. rotor support plate; 58143. spring; 58144. embedded groove; 58145. oblique caliper; 58146. side spring; 58147. ring groove; 58148. push arm. DETAILED DESCRIPTION

[0040] 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 technical staff in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 10 The present invention provides a technical solution: a motor rotor defect detection device, comprising a truncated table 1, two limiting posts 2 matched with the rotor are fixedly arranged on the top of the truncated table 1, the rotor is placed on the truncated table 1 from top to bottom, the limiting posts 2 can be inserted into the outer side of the rotor for limiting, and a circular groove 3 is opened on the truncated table 1, a turntable 4 is rotatably connected in the circular groove 3, and a detector 5 is arranged on the turntable 4.

[0042] The detector 5 includes two inner columns 51 fixedly arranged on the turntable 4, and the two inner columns 51 are symmetrically distributed along the center of the turntable 4. A column groove 52 is provided on the outer side of the surface of the inner column 51, and a rotating shaft 53 is rotatably connected in the column groove 52. A notch 54 is provided on the top of the rotating shaft 53, and a first torsion spring 55 is arranged in the notch 54. The two ends of the first torsion spring 55 are respectively connected to the rotating shaft 53 and the column groove 52.

[0043] A paddle 56 is fixedly provided on the surface of the rotating shaft 53, and the bottom end of the rotating shaft 53 passes through the turntable 4 and extends to the outside. A rotation sensor 57 that cooperates with the rotating shaft 53 is fixedly provided at the bottom of the turntable 4. After the inner column 51 is inserted into the inner ring of the rotor, the first torsion spring 55 uses the rotating shaft 53 to push the paddle 56 to abut against the inner ring of the rotor, and then drives the turntable 4 to rotate, so that the paddle 56 fits the rotor for circular motion. During this process, the convex and concave of the inner ring of the rotor push the rotating shaft 53 to rotate in the opposite direction of the paddle 56. At this time, the rotation sensor 57 records the deflection data of the rotating shaft 53.

[0044] A self-biasing component 58 is provided on the paddle 56 and the turntable 4 .

[0045] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the self-biasing assembly 58 includes a pressure ring 581 surrounding the outside of the two inner columns 51, and a top spring 582 is provided between the bottom of the pressure ring 581 and the middle of the turntable 4, and the top spring 582 pushes the pressure ring 581 to move upward.

[0046] An inner hole 583 is formed inside the paddle 56 , and a control rod 584 matching with the paddle 56 is fixedly provided on the top of the pressure ring 581 , and the control rod 584 is movably inserted into the inner hole 583 .

[0047] A bevel 585 is cut on the top of the paddle 56, and a flip piece 586 is arranged at the bevel 585, a notch 587 is opened in the bevel 585, a connecting shaft 588 is fixedly arranged on the side surface of the flip piece 586, and the flip piece 586 is rotatably connected in the notch 587 through the connecting shaft 588, a second torsion spring 589 is arranged at the connection between the connecting shaft 588 and the notch 587, and the second torsion spring 589 pushes the flip piece 586 to be flush with the paddle 56.

[0048] An inclined groove 5810 connected to the inner hole 583 is provided inside the bevel 585, and a triangular plate 5811 cooperating with the control rod 584 is slidably connected in the inclined groove 5810. A spiral groove 5812 is provided on the surface of the connecting shaft 588, and a protrusion 5813 embedded in the spiral groove 5812 is fixedly provided on the triangular plate 5811. The pressure ring 581 moves upward under the action of the top spring 582, driving the control rod 584 to push the triangular plate 5811 to move obliquely upward, and uses the protrusion 5813 to push the flip sheet 586 away from the paddle 56 along the spiral groove 5812 to form a slope. After the rotor is lowered, it pushes the pressure ring 581 to move downward to release the control of the flip sheet 586, and the flip sheet 586 is reset to align with the paddle 56.

[0049] A quick ejection assembly 5814 is provided on the truncated table 1 and the turntable 4 .

[0050] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the quick pop-up component 5814 includes a slide groove 58141 opened along the inner side of the limiting column 2 and the truncated table 1, and a rotor support plate 58142 is slidably connected in the slide groove 58141. A spring 58143 is arranged in the slide groove 58141, and the spring 58143 pushes the rotor support plate 58142 to move upward.

[0051] An embedding groove 58144 is provided on the inner side wall of the slide groove 58141, and an oblique caliper 58145 cooperating with the rotor support plate 58142 is slidably connected in the embedding groove 58144. A side spring 58146 is provided in the embedding groove 58144, and the side spring 58146 pushes the oblique caliper 58145 to move toward the slide groove 58141. During the downward movement of the rotor along the outer side of the inner column 51 for installation, the rotor contacts the rotor support plate 58142 and simultaneously pushes it downward until the rotor support plate 58142 moves down to the bottom and is clamped by the oblique caliper 58145.

[0052] The inner ring of the circular groove 3 is provided with an annular groove 58147 connected with the slide groove 58141, and the outer ring of the turntable 4 is fixedly provided with a push arm 58148, and the push arm 58148 extends into the annular groove 58147 to cooperate with the oblique caliper 58145. When the turntable 4 rotates 180° to drive the two paddles 56 to detect the inner ring of the rotor, the push arm 58148 on the side surface of the turntable 4 synchronously squeezes the oblique caliper 58145 in a circular motion, so that it retracts into the embedding groove 58144 to unlock the rotor support plate 58142, so that the spring 58143 pushes the rotor support plate 58142 and the rotor to move upward.

[0053] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, a plurality of balls are embedded and rolled on the side of the paddle 56. When the paddle 56 performs contact detection along the inner wall of the rotor in a circular motion, the balls can roll along the inner wall of the rotor, thereby avoiding unnecessary wear caused by hard friction between the paddle 56 and the rotor.

[0054] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, a guide column is movably inserted on the surface of the turntable 4, and the guide column is fixedly connected to the pressure ring 581. The guide column assists the pressure ring 581 to move up and down along the turntable 4 to prevent the pressure ring 581 from rotating and causing friction with the rotor.

[0055] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the push arm 58148 is movably inserted into the side of the turntable 4, and the turntable 4 is provided with a bolt for fixing the push arm 58148. After the bolt is unscrewed, the push arm 58148 can be separated from the turntable 4. On the one hand, it can prevent the push arm 58148 from affecting the disassembly of the turntable 4 in the annular groove 58147, and on the other hand, it can facilitate the user to replace the worn push arm 58148.

[0056] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the side surface of the oblique caliper 58145 is provided with a curved opening that matches with the push arm 58148. When the push arm 58148 contacts the oblique caliper 58145, it can push the oblique caliper 58145 more stably along the curved opening to retract into the embedding groove 58144 and disengage in the subsequent circular motion.

[0057] A detection method for a motor rotor defect detection device comprises the following steps:

[0058] S1. Place the rotor on the truncated table 1 from top to bottom, insert the limit column 2 into the outer side of the rotor for limiting, insert the inner column 51 into the inner ring of the rotor, and use the first torsion spring 55 to push the paddle 56 to abut against the inner ring of the rotor using the rotating shaft 53. Then drive the turntable 4 to rotate so that the paddle 56 fits the rotor for circular motion. During this process, the convex and concave of the inner ring of the rotor push the rotating shaft 53 to rotate in the opposite direction of the paddle 56. At this time, the rotation sensor 57 records the deflection data of the rotating shaft 53 and is used to detect the convex and concave of the inner ring of the rotor.

[0059] S2. The pressure ring 581 moves upward under the action of the top spring 582, driving the control rod 584 to push the triangular plate 5811 to move obliquely upward, and uses the protrusion 5813 to push the flip piece 586 away from the paddle 56 along the spiral groove 5812 to form a slope. When the rotor is inserted on the outside of the inner column 51, the inner ring of the rotor contacts the above slope, and squeezes the paddle 56 and the rotating shaft 53 to deflect, so that the paddle 56 can be tilted and pressed against the inner ring of the rotor. When the rotor is lowered, it pushes the pressure ring 581 to move downward to release the control of the flip piece 586, and the flip piece 586 is reset to align with the paddle 56. At this time, the rotor can no longer be installed on the round table 1.

[0060] S3. During the installation process of the rotor moving downward along the outer side of the inner column 51, the rotor contacts the rotor support plate 58142 and pushes it downward synchronously until the rotor support plate 58142 moves down to the bottom and is clamped by the oblique caliper 58145. When the turntable 4 rotates 180° to drive the two paddles 56 to detect the inner ring of the rotor, the push arm 58148 on the side surface of the turntable 4 synchronously squeezes the oblique caliper 58145 in a circular motion, causing it to retract into the embedding groove 58144 and unlock the rotor support plate 58142, so that the spring 58143 pushes the rotor support plate 58142 and the rotor to move upward.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A motor rotor defect detection device, comprising a truncated table (1), characterized in that: Two limiting columns (2) matched with the rotor are fixedly arranged on the top of the truncated table (1), and a circular groove (3) is provided on the truncated table (1). A rotating disk (4) is rotatably connected in the circular groove (3), and a detector (5) is arranged on the rotating disk (4); The detector (5) comprises two inner columns (51) fixedly arranged on the rotating disk (4), and the two inner columns (51) are symmetrically distributed along the center of the rotating disk (4); a column groove (52) is provided on the outer side of the surface of the inner column (51), and a rotating shaft (53) is rotatably connected in the column groove (52); a notch (54) is provided on the top of the rotating shaft (53), and a first torsion spring (55) is arranged in the notch (54); and two ends of the first torsion spring (55) are respectively connected to the rotating shaft (53) and the column groove (52); A paddle (56) is fixedly disposed on the surface of the rotating shaft (53), and the bottom end of the rotating shaft (53) passes through the rotating disk (4) and extends to the outside, and a rotation amount sensor (57) matching the rotating shaft (53) is fixedly disposed on the bottom of the rotating disk (4); A self-biasing component (58) is provided on the paddle (56) and the rotating disk (4); The self-biasing component (58) comprises a pressure ring (581) surrounding the outside of the two inner columns (51), and a top spring (582) is provided between the bottom of the pressure ring (581) and the rotating disk (4), and the top spring (582) pushes the pressure ring (581) to move upward; An inner hole (583) is formed inside the plectrum (56), and a control rod (584) matched with the plectrum (56) is fixedly arranged on the top of the pressure ring (581), and the control rod (584) is movably inserted into the inner hole (583); The top of the paddle (56) is cut with a bevel (585), and a flip sheet (586) is arranged at the bevel (585), a notch (587) is opened in the bevel (585), a connecting shaft (588) is fixedly arranged on the side surface of the flip sheet (586), and the flip sheet (586) is rotatably connected in the notch (587) via the connecting shaft (588), a second torsion spring (589) is arranged at the connection between the connecting shaft (588) and the notch (587), and the second torsion spring (589) pushes the flip sheet (586) to be flush with the paddle (56); The interior of the bevel (585) is provided with an oblique groove (5810) communicating with the inner hole (583), and a triangular plate (5811) cooperating with the control rod (584) is slidably connected in the oblique groove (5810); a spiral groove (5812) is provided on the surface of the connecting shaft (588), and a protrusion (5813) embedded in the spiral groove (5812) is fixedly provided on the triangular plate (5811); The truncated table (1) and the rotating disk (4) are provided with a quick ejection component (5814).

2. The motor rotor defect detection device according to claim 1, characterized in that: The quick ejection component (5814) comprises a slide groove (58141) provided along the inner side of the limiting column (2) and in the truncated table (1), and a rotor support plate (58142) is slidably connected in the slide groove (58141), a spring (58143) is provided in the slide groove (58141), and the spring (58143) pushes the rotor support plate (58142) to move upward; An embedding groove (58144) is provided on the inner side wall of the slide groove (58141), and an oblique caliper (58145) matching with the rotor support plate (58142) is slidably connected in the embedding groove (58144), and a side spring (58146) is provided in the embedding groove (58144), and the side spring (58146) pushes the oblique caliper (58145) to move in the direction of the slide groove (58141); The inner ring of the circular groove (3) is provided with an annular groove (58147) communicating with the slide groove (58141), and the outer ring of the rotating disk (4) is fixedly provided with a push arm (58148), and the push arm (58148) extends into the annular groove (58147) to cooperate with the oblique caliper (58145).

3. The motor rotor defect detection device according to claim 2, characterized in that: A plurality of balls are rotatably embedded on the side of the paddle (56).

4. The motor rotor defect detection device according to claim 2, characterized in that: A guide column is movably inserted into the surface of the rotating disk (4), and the guide column is fixedly connected to the pressure ring (581).

5. The motor rotor defect detection device according to claim 2, characterized in that: The push arm (58148) is movably plugged into the side of the turntable (4), and a bolt for fixing the push arm (58148) is provided on the turntable (4).

6. The motor rotor defect detection device according to claim 2, characterized in that: The side surface of the oblique-mouth caliper (58145) is provided with a curved mouth that matches the push arm (58148).

7. A detection method of a motor rotor defect detection device, using the motor rotor defect detection device as claimed in claim 2, characterized in that: The steps include: S1, placing the rotor on the truncated table (1) from top to bottom, inserting the limiting column (2) into the outer side of the rotor for limiting, inserting the inner column (51) into the inner ring of the rotor, using the rotating shaft (53) to push the paddle (56) to abut against the inner ring of the rotor, and then driving the turntable (4) to rotate, so that the paddle (56) fits the rotor to perform circular motion, during which the concave and convex of the inner ring of the rotor pushes the rotating shaft (53) in the opposite direction of the paddle (56) to rotate, and at this time, the rotation amount sensor (57) records the deflection data of the rotating shaft (53) and is used to detect the concave and convex of the inner ring of the rotor; S2, the pressure ring (581) moves upward under the action of the top spring (582), driving the control rod (584) to push the triangular plate (5811) to move obliquely upward, and using the protrusion (5813) to push the flip plate (586) along the spiral groove (5812) to deviate from the paddle (56) to form a slope. When the rotor is inserted on the outer side of the inner column (51), the inner ring of the rotor contacts the above slope and squeezes the paddle (56) and the rotating shaft (53) to deflect, so that the paddle (56) can be tilted and pressed against the inner ring of the rotor. When the rotor is lowered, it pushes the pressure ring (581) to move downward to release the control of the flip plate (586), and the flip plate (586) is reset to align with the paddle (56). At this time, the rotor cannot be installed on the round table (1); S3. During the installation process of the rotor moving downward along the outer side of the inner column (51), the rotor contacts the rotor support plate (58142) and pushes it downward synchronously until the rotor support plate (58142) moves downward to the bottom and is clamped by the oblique caliper (58145). When the turntable (4) rotates 180 degrees to drive the two paddles (56) to detect the inner ring of the rotor, the push arm (58148) on the side surface of the turntable (4) synchronously squeezes the oblique caliper (58145) in a circular motion, causing it to retract into the embedded groove (58144) to unlock the rotor support plate (58142), so that the spring (58143) pushes the rotor support plate (58142) and the rotor to move upward.

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