Motor dismounting mechanism

Abstract

The invention relates to the technical field of motor machining devices, in particular to a motor disassembling and assembling mechanism which comprises a positioning part and a pushing part. The pushing part comprises a driving part and fixing clamps for clamping the two ends of the rotor. The driving part is connected to the fixing clamp so as to drive the fixing clamp to move relative to the positioning part. The positioning part comprises a fixing ring and a plurality of clamping plates arranged in the circumferential direction of the fixing ring. The fixing clamp comprises an air expansion shaft and a clamping plate which are oppositely arranged, so that the rotor can be clamped between the air expansion shaft and the clamping plate. And the inflatable shaft is provided with a plurality of groups of expansion keys along the length direction. And each group of expansion keys are distributed along the circumferential direction of the air expansion shaft. The stator can be quickly aligned with the air expansion shaft through the air expansion shaft, so that the stator is concentric with the air expansion shaft when the clamping plate clamps the stator, the stator can be locked only through the clamping plate, and mutual positioning of the stator and the air expansion shaft is quicker. And the stator and the rotor can be assembled conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of motor processing devices, and in particular to a motor disassembly and assembly mechanism. Background Art

[0002] The motor includes a stator and a rotor, both of which rotate under the action of a magnetic field. One type of rotor is a permanent magnet rotor, which has a very strong magnetic field after magnetization. When the rotor and stator are assembled, the rotor is generally inserted into the stator. Since the gap between the rotor and the stator is extremely small, the rotor and the stator may be adsorbed together during the process of inserting the rotor into the stator and under the action of the strong magnetic force of the rotor. Due to the strong magnetic force, the rotor and the stator may be damaged. Some devices are also provided in the prior art to assemble the stator and the rotor. It generally includes a fixed part for fixing the stator and a pushing mechanism for pushing the rotor into the stator. The relative position of the pushing mechanism and the fixed part is determined to avoid the collision between the stator and the rotor.

[0003] In order to ensure that the stator and the rotor do not collide with each other, the rotor needs to be aligned with the center of the stator and move along the center line of the stator. However, the fixing part of the prior art is a conventional clamping mechanism, which makes it difficult to determine the center position of the stator after clamping the stator, making the assembly process more troublesome. Summary of the invention

[0004] The object of the present invention is to provide a motor disassembly and assembly mechanism, which can quickly align the stator and then quickly assemble it.

[0005] The present invention is achieved through the following technical solutions: A motor disassembly and assembly mechanism comprises a positioning part and a pushing part; the pushing part comprises a driving part and a fixing clamp for clamping both ends of a rotor; the driving part is connected to the fixing clamp so that the driving part drives the fixing clamp to move relative to the positioning part; the positioning part comprises a fixing ring and a plurality of clamping plates arranged along the circumference of the fixing ring; the fixing clamp comprises an inflatable shaft and a clamping plate arranged opposite to each other, so that the rotor can be clamped between the inflatable shaft and the clamping plate; the inflatable shaft is provided with a plurality of groups of expansion keys along its length direction; each group of the expansion keys is distributed along the circumference of the inflatable shaft.

[0006] Furthermore, it also includes a frame; the fixing ring is hinged to the frame; the fixing ring is provided with a locking screw; the frame is provided with an arc hole for the locking screw to swing; the locking screw is provided with a locking nut.

[0007] Furthermore, a ball bearing is arranged on the surface of the expansion key.

[0008] Furthermore, the clamping plate is connected to one end of the screw rod; the screw rod is threadedly connected to the fixing ring and an extension line of the screw rod passes through the center of the fixing ring.

[0009] Furthermore, the frame is provided with two supporting arms relatively to each other; the fixing ring is provided between the two supporting arms and is hinged to the supporting arms; both supporting arms are provided with the arc-shaped holes; the locking screw is slidably provided in the fixing ring and the two arc-shaped holes.

[0010] Furthermore, the driving part includes a cylinder and a driving motor; the cylinder is connected to the clamping plate so that the clamping plate can be lifted and lowered relative to the inflatable shaft; the driving motor is connected to the inflatable shaft so that the inflatable shaft can be lifted and lowered.

[0011] Furthermore, the driving motor is connected to a transmission screw; the transmission screw is passed through the interior of the inflatable shaft and is threadedly connected to the inflatable shaft.

[0012] Furthermore, the frame is also provided with a guide sleeve; the inflatable shaft is slidably arranged in the guide sleeve.

[0013] A motor assembly method adopts the above-mentioned motor disassembly and assembly mechanism; the assembly method is: placing the stator inside the fixed ring and inserting the air shaft into the stator; inflating the air shaft so that a plurality of expansion keys press against the inner wall of the stator; rotating the screw parallel to the fixed ring rotating shaft so that its corresponding clamping plate presses against the outer wall of the stator; rotating the screw perpendicular to the fixed ring rotating shaft so that its corresponding clamping plate presses against the outer wall of the stator; after all the clamping plates press against the outer wall of the stator, the air in the air shaft is discharged and the pushing part is started so that the rotor extends into the stator.

[0014] The technical solution of the present invention has at least the following advantages and beneficial effects: When the motor disassembly and assembly mechanism of the present invention is used, the stator is first placed inside the fixed ring, and the inflatable shaft is inserted into the stator. When the inflatable shaft is inflated, a number of expansion keys protrude and fit against the inner wall of the stator. Since the structure of each expansion key is the same and the air pressure behind it is the same, the thickness of the protruding expansion keys is the same. This also makes the center line of the stator coincide with the center line of the inflatable shaft under the action of the expansion keys, that is, the two are concentric. Then, the stator is clamped by a number of clamps around the fixed ring to evacuate the air from the inflatable shaft, so that the stator is fixed by the clamps. Finally, the rotor is clamped between the inflatable shaft and the clamping plate and the rotor is gradually driven into the stator by the drive unit.

[0015] The stator can be quickly aligned with the air shaft, so that when the stator is clamped by the clamp, the stator is already concentric with the air shaft. The stator can be locked by the clamp, making the mutual positioning of the stator and the air shaft faster. At the same time, it also ensures that the rotor clamped at one end of the air shaft is concentric with the stator and is sent into the stator along the axis of the stator. In addition, the rotor is clamped and sent into the stator by the air shaft and the clamping plate, which can ensure that the rotor always enters the stator along the axis of the stator to avoid damage during the assembly process.

[0016] Since the clamping plate clamps the outer wall of the stator, the stator has been assembled with the motor housing. However, the shapes of motor housings are different, resulting in the axis of the stator inner cylinder being not parallel to the axis of the motor housing. This means that after the stator is clamped, the axis of its inner cylinder is not vertical, while the moving direction of the rotor is vertical. This requires rotating the fixing ring to make the axis of the stator inner cylinder vertical. The fixing ring is hinged to the frame to facilitate adjusting the axis of the stator inner cylinder to a vertical state. After the angle is adjusted, it can be locked to the frame by the locking screw.

[0017] The balls on the expansion key surface enable the stator to rotate relative to the air shaft, making it easier to adjust the angle of the stator relative to the air shaft. The angle of the stator can be quickly adjusted by cooperating with two pairs of clamps. Specifically, as the clamps gradually move toward the center, the clamp that first contacts the motor housing will push the entire stator to rotate until the clamps clamp the motor housing. During the entire clamping process, the stator rotates with the push of the clamps, so that the stator is clamped in the best clamping posture. Several balls ensure that the stator rotates more smoothly.

[0018] The cylinder clamps the rotor between the air shaft and the clamping plate. The drive rod and the air shaft cooperate to drive the rotor through the drive motor. The motor control is more precise and more conducive to controlling the process of the rotor extending into the stator. During the process of the rotor extending into the stator, the cylinder keeps the rotor clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the motor disassembly and assembly mechanism of the present invention.

[0020] Figure 2 Schematic diagram of the coordination between the fixing ring and surrounding parts.

[0021] Figure 3 Schematic diagram of the stator clamped inside the fixing ring.

[0022] Figure 4 This is a schematic diagram of the air shaft being expanded and tightened inside the stator.

[0023] Figure markings: 1-frame, 2-fixing ring, 3-clamp, 4-inflatable shaft, 5-clamping plate, 6-expansion key, 7-locking screw, 8-arc hole, 9-locking nut, 10-screw, 11-support arm, 12-cylinder, 13-drive motor, 14-transmission screw, 15-guide sleeve, 16-airbag, 17-cross bar, 18-stator, 19-rotor. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 4 As shown, this embodiment provides a motor disassembly and assembly mechanism, including a positioning part and a pushing part. The positioning part is used to fix the stator 18 so that the stator 18 is placed vertically. The pushing part includes a driving part and a fixing clamp that clamps both ends of the rotor 19. The driving part is connected to the fixing clamp so that the driving part drives the fixing clamp to move relative to the positioning part, thereby allowing the rotor 19 clamped in the fixing clamp to enter the inside of the stator 18. The positioning part includes a fixing ring 2 and a plurality of clamps 3 arranged circumferentially along the fixing ring 2. The clamp 3 is connected to one end of the screw 10. The screw 10 is threadedly connected to the fixing ring 2 and the extension line of the screw 10 passes through the center of the fixing ring 2. The fixing clamp includes an inflatable shaft 4 and a clamping plate 5 arranged opposite to each other, so that the rotor 19 can be clamped between the inflatable shaft 4 and the clamping plate 5. The inflatable shaft 4 is provided with a plurality of groups of expansion keys 6 along its length direction. Each group of expansion keys 6 is distributed along the circumference of the inflatable shaft 4. The inflatable shaft 4 is a common mechanical component, and an airbag 16 and an expansion key 6 are arranged inside it. The inflatable shaft 4 is tubular, and a plurality of through holes are arranged on its wall. A plurality of expansion keys 6 are arranged through the through holes and can be extended and retracted along the through holes. The airbag 16 is arranged inside the inflatable shaft 4. When the airbag 16 is inflated, the airbag 16 expands and pushes the expansion keys 6 out of the through holes, thereby increasing the outer diameter of the inflatable shaft 4. The specific structure of the inflatable shaft 4 can be referred to Figure 4 shown.

[0025] When the motor disassembly and assembly mechanism of this embodiment is used, the stator 18 is first placed inside the fixing ring 2, and the inflatable shaft 4 is inserted into the stator 18. When the inflatable shaft 4 is inflated, a number of expansion keys 6 protrude and fit against the inner wall of the stator 18. Since the structure of each expansion key 6 is the same and the air pressure behind it is the same, the thickness of the protrusions of the expansion keys 6 are the same. This also makes it possible for the center line of the stator 18 to coincide with the center line of the inflatable shaft 4 under the action of the expansion keys 6, that is, the two are concentric. Subsequently, the stator 18 is clamped by a number of clamps 3 around the fixing ring 2 to evacuate the inflatable shaft 4, so that the stator 18 is fixed by the clamps 3. Finally, the rotor 19 is clamped between the inflatable shaft 4 and the clamping plate 5 and the rotor 19 is gradually driven into the stator 18 by the drive unit.

[0026] The stator 18 can be quickly aligned with the inflatable shaft 4, so that when the clamping plate 3 clamps the stator 18, the stator 18 is already concentric with the inflatable shaft 4. It is only necessary to lock the stator 18 through the clamping plate 3, so that the mutual positioning of the stator 18 and the inflatable shaft 4 is faster. At the same time, it is also ensured that the rotor 19 clamped at one end of the inflatable shaft 4 is concentric with the stator 18 and is sent into the stator 18 along the axis of the stator 18. In addition, the rotor 19 is clamped and sent into the stator 18 by the inflatable shaft 4 and the clamping plate 5, so that the rotor 19 can always enter the stator 18 along the axis of the stator 18 to avoid damage during the assembly process.

[0027] In order to ensure that the rotor 19 is concentric with the air shaft 4 when clamped between the air shaft 4 and the clamping plate 5, the air shaft 4 and the clamping plate 5 are both provided with tapered holes, so that the rotating shaft of the rotor 19 can reach a concentric state after entering. Claws can also be provided on the air shaft 4 and the clamping plate 5, so that the claws are concentric after clamping. The claws can adopt the claw structure of a lathe.

[0028] In this embodiment, a frame 1 is also included. Figure 1 , Figure 2 and Figure 3 As shown, the fixing ring 2 is hinged to the frame 1. The fixing ring 2 is provided with a locking screw 7. The frame 1 is provided with an arc-shaped hole 8 for the locking screw 7 to swing. The locking screw 7 is provided with a locking nut 9. Specifically, the frame 1 is relatively provided with two support arms 11. The fixing ring 2 is arranged between the two support arms 11 and is hinged to the support arms 11. Both support arms 11 are provided with an arc-shaped hole 8. The locking screw 7 is slidably penetrated through the fixing ring 2 and the two arc-shaped holes 8. This enables the fixing ring 2 to rotate. During the rotation of the fixing ring 2, the locking screw 7 slides along the arc-shaped hole 8. When the fixing ring 2 is rotated to a suitable position, tightening the locking nut can fix the locking screw 7 to the arc-shaped hole 8, thereby fixing the angle of the fixing ring 2.

[0029] The locking screw 7 is slidably arranged through the fixing ring 2 and the two arc-shaped holes 8 so that during the locking process, the locking screw 7 is only locked to the two support arms 11 on both sides without applying lateral force to the fixing ring 2 .

[0030] Since the clamping plate 3 clamps the outer wall of the stator 18, the stator 18 is now assembled with the motor housing. However, the shapes of motor housings are different, resulting in the axis centerline of the inner cylinder of the stator 18 being not parallel to the axis centerline of the motor housing. This means that after the stator 18 is clamped, the axis centerline of its inner cylinder is not vertical, while the moving direction of the rotor 19 is vertical. This requires rotating the fixing ring 2 to make the axis centerline of the inner cylinder of the stator 18 vertical. The fixing ring 2 is hinged to the frame 1 to facilitate adjusting the axis centerline of the inner cylinder of the stator 18 to a vertical state. After the angle is adjusted, it can be locked to the frame 1 by the locking screw 7.

[0031] In this embodiment, balls are provided on the surface of the expansion key 6. The balls provided on the surface of the expansion key 6 enable the stator 18 to rotate relative to the air shaft 4, thereby facilitating adjustment of the angle of the stator 18 relative to the air shaft 4. The angle of the stator 18 can be quickly adjusted by cooperating with two pairs of clamps 3. Specifically, as the plurality of clamps 3 gradually move toward the middle, the clamp 3 that first contacts the motor housing will push the entire stator 18 to rotate until the plurality of clamps 3 clamp the motor housing. During the entire clamping process, the stator 18 rotates following the push of the clamp 3, thereby clamping the stator 18 in the optimal clamping posture. A plurality of balls ensure that the stator 18 rotates more smoothly.

[0032] Correspondingly, a support platform for supporting the stator 18 can also be configured. It is arranged below the fixing ring 2. When the inflatable shaft 4 expands inside the stator 18, the stator 18 is placed on the support platform, thereby preventing the stator 18 from falling.

[0033] In this embodiment, the driving unit includes a cylinder 12 and a driving motor 13. Figure 1 As shown, the cylinder 12 is connected to the clamping plate 5 through the cross bar 17, so that the clamping plate 5 can be raised and lowered relative to the inflatable shaft 4. The cross bar 17 is sleeved on the outside of the bracket and can be raised and lowered relative to the cross bar 17. The drive motor 13 is connected to the inflatable shaft 4, so that the inflatable shaft 4 can be raised and lowered. Specifically, the drive motor 13 is connected to a transmission screw 14. The transmission screw 14 is inserted into the inside of the inflatable shaft 4 and is threadedly connected to the inflatable shaft 4. The frame 1 is also provided with a guide sleeve 15. The inflatable shaft 4 can be slidably inserted into the guide sleeve 15, so that the lifting and lowering of the inflatable shaft 4 is smoother.

[0034] The cylinder 12 clamps the rotor 19 between the air shaft 4 and the clamping plate 5. The cooperation between the drive screw 14 and the air shaft 4 enables the movement of the rotor 19 to be driven by the drive motor 13. The control of the motor is more precise, which is more conducive to controlling the process of the rotor 19 extending into the stator 18. During the process of the rotor 19 extending into the stator 18, the cylinder 12 keeps the rotor 19 clamped.

[0035] Finally, the motor disassembly mechanism of this embodiment can not only be used to assemble the stator 18 and the rotor 19, but also to disassemble the stator 18 and the rotor 19. When disassembling the stator 18 and the rotor 19, the two ends of the rotor are clamped by the air shaft 4 and the clamping plate 5. Then, the rotor 19 is gradually removed from the stator 18 by the cooperation of the transmission screw 14 and the air shaft 4, thereby completing the separation of the stator 18 and the rotor 19.

Claims

1. A motor disassembly and assembly mechanism, characterized in that: It includes a positioning part and a pushing part; the pushing part includes a driving part and a fixing clamp for clamping both ends of the rotor; the driving part is connected to the fixing clamp so that the driving part drives the fixing clamp to move relative to the positioning part; the positioning part includes a fixing ring and a plurality of clamping plates arranged along the circumference of the fixing ring; the fixing clamp includes an inflatable shaft and a clamping plate arranged opposite to each other, so that the rotor can be clamped between the inflatable shaft and the clamping plate; the inflatable shaft is provided with a plurality of groups of expansion keys along its length direction; each group of the expansion keys is distributed along the circumference of the inflatable shaft.

2. The motor disassembly and assembly mechanism according to claim 1, characterized in that: It also includes a frame; the fixing ring is hinged to the frame; the fixing ring is provided with a locking screw; the frame is provided with an arc hole for the locking screw to swing; the locking screw is provided with a locking nut.

3. The motor disassembly and assembly mechanism according to claim 2, characterized in that: The surface of the expansion key is provided with a ball.

4. The motor disassembly and assembly mechanism according to claim 3, characterized in that: The clamping plate is connected to one end of the screw rod; the screw rod is threadedly connected to the fixing ring and the extension line of the screw rod passes through the center of the fixing ring.

5. The motor disassembly and assembly mechanism according to claim 4, characterized in that: The frame is provided with two supporting arms opposite to each other; the fixing ring is provided between the two supporting arms and is hinged to the supporting arms; the two supporting arms are both provided with the arc-shaped holes; the locking screw is slidably provided through the fixing ring and the two arc-shaped holes.

6. The motor disassembly and assembly mechanism according to claim 5, characterized in that: The driving part includes a cylinder and a driving motor; the cylinder is connected to the clamping plate so that the clamping plate can be lifted and lowered relative to the inflatable shaft; the driving motor is connected to the inflatable shaft so that the inflatable shaft can be lifted and lowered.

7. The motor disassembly and assembly mechanism according to claim 6, characterized in that: The driving motor is connected to a transmission screw; the transmission screw is passed through the interior of the inflatable shaft and is threadedly connected to the inflatable shaft.

8. The motor disassembly and assembly mechanism according to claim 7, characterized in that: The frame is also provided with a guide sleeve; the inflatable shaft is slidably arranged in the guide sleeve.

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