Disassembly equipment for orbital motors

Abstract

The present invention discloses a disassembly device for a gerotor motor, which includes a stator and a rotor arranged in the stator. The disassembly device includes: a support seat, a plurality of guide pins, and a rotor disassembly device. The support seat includes a first part and a second part located below the first part, the first part has a first inner hole, the second part has an inner cavity connected to the first inner hole, and the first part is used to support the stator and allow the rotor to pass through the first inner hole into the inner cavity. A plurality of guide pins are fixed on the first part of the support seat, extending upward from the upper end surface of the first part of the support seat, and are configured to cooperate with the fixing holes of the stator of the gerotor motor to position the stator in the radial direction and the circumferential direction of the stator. The rotor disassembly device is used to apply a downward force to the rotor while rotating the rotor. The use of the disassembly device can effectively reduce the surface scratches of the stator and the rotor, while greatly reducing the disassembly time and reducing the labor intensity of the workers.

Description

Technical Field

[0001] Embodiments of the present invention relate to a disassembly apparatus for a gerotor motor. Background Art

[0002] When the torque of the stator and rotor of the cycloidal motor exceeds the tolerance after assembly, rework is required. During rework, the rotor needs to be removed from the inner cavity of the stator and a new rotor needs to be reinstalled until the matching torque meets the requirements. Due to the matching torque, the rotor and stator are in a clamped state, and it is usually difficult to remove the rotor from the inner cavity of the stator by manpower, especially for large-displacement cycloidal motors, where the rotor and stator are wider, and thus the matching surface of the rotor and stator is wider. Forcibly removing the rotor from the inner cavity of the stator by knocking may cause scratches on the outer contour of the rotor tooth and the cylindrical surface of the inner cavity of the stator. The contact surface of the stator and rotor is finely ground, and the surface roughness requirements are very high. Scratches are unacceptable. Summary of the invention

[0003] An object of embodiments of the present invention is to provide a disassembly apparatus for a gerotor motor, whereby, for example, surface scratching of a rotor and a stator of a gerotor motor can be at least alleviated.

[0004] An embodiment of the present invention provides a disassembly device for a gerotor motor, wherein the gerotor motor includes a stator and a rotor disposed in the stator, and the disassembly device includes:

[0005] A support seat, the support seat includes a first part and a second part located below the first part, the first part has a first inner hole, the second part has an inner cavity connected to the first inner hole, the first part is used to support the stator and allow the rotor to pass through the first inner hole into the inner cavity; a plurality of guide pins, the plurality of guide pins are fixed to the first part of the support seat, extend upward from the upper end surface of the first part of the support seat, and are configured to cooperate with the fixing holes of the stator of the cycloidal motor to position the stator in the radial direction and circumferential direction of the stator; and a rotor disassembly device, the rotor disassembly device is used to apply a downward force to the rotor while rotating the rotor.

[0006] According to an embodiment of the present invention, the rotor disassembly device comprises a spline wrench, and the spline wrench is used to be inserted into the inner hole of the rotor and cooperate with the splines of the inner hole of the rotor.

[0007] According to an embodiment of the present invention, the first inner hole of the first part of the support seat has the same cross-sectional shape as the inner cavity of the stator.

[0008] According to an embodiment of the present invention, the second portion of the support seat has a cylindrical shape and includes a second inner hole adjacent to the first inner hole of the first portion of the support seat, and an opening located in the side wall, which is used to remove the rotor dropped into the inner cavity.

[0009] According to an embodiment of the present invention, the disassembly device for the cycloidal motor further comprises: a bottom plate, wherein the bottom plate is below the support seat, and the second portion of the support seat is fixed to the bottom plate.

[0010] According to an embodiment of the present invention, the disassembly device for the cycloidal motor further includes: a partition, which is arranged between the second part of the support seat and the bottom plate, and the hardness of the partition is less than the hardness of the bottom plate.

[0011] According to an embodiment of the present invention, the disassembly device for the cycloidal motor further comprises: a pad, which is arranged in the second part of the support seat and located on the partition, and the hardness of the pad is less than the hardness of the partition.

[0012] According to an embodiment of the present invention, an upper end of the second inner hole of the second part of the support seat has the same cross-sectional shape as the inner cavity of the stator.

[0013] According to an embodiment of the present invention, the first part of the support base is fixed to the second part of the support base by screws.

[0014] According to an embodiment of the present invention, the rotor disassembly device includes: a spline portion, which is used to be inserted into the inner hole of the rotor and cooperate with the spline of the inner hole of the rotor to rotate the rotor through the spline portion; and a shoulder portion, which is connected to the spline portion and has a diameter larger than the diameter of the inner hole of the rotor and smaller than the diameter of the inner hole of the stator, so as to apply a downward force to the rotor through the shoulder portion.

[0015] According to an embodiment of the present invention, the rotor disassembly device further includes: a rod connected to the shoulder; and a handle connected to the rod.

[0016] By using the disassembly apparatus for a gerotor motor according to an embodiment of the present invention, for example, surface scratches on a rotor and a stator of the gerotor motor can be at least alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic perspective view of a gerotor motor according to an exemplary embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic cross-sectional view of a gerotor motor is shown;

[0019] Figure 3 for Figure 1 A schematic side view of a gerotor motor is shown;

[0020] Figure 4 is a schematic perspective view of a disassembly apparatus for a gerotor motor according to an exemplary embodiment of the present invention;

[0021] Figure 5 for Figure 4 A schematic side view of the disassembly device shown in use for disassembling a rotor from a stator of a gerotor motor; and

[0022] Figure 6 For along Figure 5 A schematic cross-sectional view of the disassembly device taken along line AA in FIG. 1 , showing the disassembly device in use for disassembling the rotor from the stator of the cycloid motor. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] See also Figures 1 to 3 , the cycloidal motor 200 generally includes: a housing 21, an output shaft 22, a linkage shaft 23, a spacer 24, a stator 25, a rotor 26 disposed in the stator 25, and a rear cover 27. The output shaft 22 is connected to the rotor 26 through the linkage shaft 23. The splines on the outer circumferential surfaces of both ends of the linkage shaft 23 are respectively connected to the splines in the inner hole of the output shaft 22 and the splines in the inner hole of the rotor 26. The stator 25 has a plurality of fixing holes 251 (for example, 7 through holes), the spacer 24 has a plurality of through holes 241, and the housing 21 has a plurality of threaded holes 211. The stator 25 is fixed to the housing 21 by bolts 28.

[0025] See also Figures 4 to 6 , according to an embodiment of the present invention, a disassembly device 100 for a gerotor motor includes a support seat 1, a plurality of guide pins 3 and a rotor disassembly device 5. The support seat 1 includes a first part 11 and a second part 12 located below the first part 11, the first part 11 having a first inner hole 110, the second part 12 having an inner cavity 120 connected to the first inner hole 110, and the first part 11 is used to support the stator and allow the rotor to pass through the first inner hole 110 into the inner cavity 120. The first part 11 of the support seat 1 can be fixed to the second part 12 of the support seat 1 by screws 7. A plurality of guide pins 3 are fixed to the first part 11 of the support seat 1, extending upward from the upper end surface of the first part 11 of the support seat 1, and are configured to cooperate with the fixing holes 251 of the stator 25 of the gerotor motor 100 to position the stator 25 in the radial direction and the circumferential direction of the stator 25. As Figure 5 and Figure 6 As shown, the rotor removal device 5 is used to apply a downward force to the rotor 26 while rotating the rotor 26 .

[0026] See also Figure 5 and Figure 6 In an embodiment of the present invention, the rotor disassembly device 5 includes a spline wrench, which is used to be inserted into the inner hole of the rotor 26 and cooperate with the spline of the inner hole of the rotor. For example, the rotor disassembly device 5 includes a spline portion 51, a shoulder 53, a connecting portion 52 between the spline portion 51 and the shoulder 53, a rod 54 connected to the shoulder 53, and a handle 55 connected to the rod 54. The spline portion 51 of the rotor disassembly device 5 cooperates with the spline of the inner hole of the rotor 26, so that the rotor disassembly device 5 can rotate the rotor 26 through the spline portion 51, and the diameter of the shoulder 53 is larger than the diameter of the inner hole of the rotor 26 and smaller than the diameter of the inner hole of the stator, so that the rotor disassembly device 5 can apply a downward force to the rotor 26 through the shoulder 53. In addition, the connecting portion 52 may not be provided between the spline portion 51 and the shoulder 53, but the spline portion 51 is directly connected to the shoulder 53. The diameter of the rod 54 is smaller than the diameter of the inner hole of the rotor 26. In addition, the rotor disassembly device 5 may also adopt other suitable forms, as long as it can apply a downward force to the rotor 26 while rotating the rotor 26 .

[0027] See also Figures 4 to 6 According to an embodiment of the present invention, the first inner hole 110 of the first part 11 of the support seat 1 has the same cross-sectional shape as the inner cavity of the stator 25, so as to better support the stator 25 and better guide the rotor 26 to rotate and descend. The second part 12 of the support seat 1 has a cylindrical shape, and includes a second inner hole 121 adjacent to the first inner hole 110 of the first part 11 of the support seat 1 (the second inner hole 121 may also have the same cross-sectional shape as the inner cavity of the stator 25), and an opening 122 located in the side wall, and the opening 122 is used to take out the rotor 26 that falls into the inner cavity. It can be understood that the size of the first inner hole and the second inner hole can be slightly larger than the size of the inner cavity of the stator 25 to facilitate the removal of the rotor. The first part 11 and the second part 12 of the support seat 1 can be as follows Figures 4 to 6 The two parts shown connected together by the screw 7, or the first part 11 and the second part 12 of the support base 1, can be integral.

[0028] See also Figures 4 to 6According to an embodiment of the present invention, the disassembly device 100 further includes: a bottom plate 61, the bottom plate 61 is below the support seat 1, and the second part 12 of the support seat 1 is fixed to the bottom plate 61. The disassembly device 100 may also include: a partition 62, the partition 62 is arranged between the second part 12 of the support seat 1 and the bottom plate 61, and the hardness of the partition 62 is less than the hardness of the bottom plate 61. According to an example of the present invention, the disassembly device 100 may also include: a pad 63, the pad 63 is arranged in the second part 12 of the support seat 1 and is located on the partition 62, and the hardness of the pad 63 is less than the hardness of the partition 62. The partition 62 can be made of a nylon plate to prevent the end face of the rotor from being damaged when the rotor falls, especially for the rotor of a large-displacement cycloidal motor. The pad 63 can be made of a silicone plate to prevent the end face of the rotor from being damaged when the rotor falls, especially for the rotor of a medium- and small-displacement cycloidal motor.

[0029] In addition, see Figure 4 and Figure 5 The disassembly device 100 may further include a locking screw 8, which has a limiting function to prevent the pad 63 from escaping laterally from the support seat 1. The locking screw 8 also fixes the partition 62. In addition, as Figure 6 As shown, the support base 1 and the bottom plate 61 are fixed together by screws 64, and the partition plate 62 is sandwiched between the support base 1 and the bottom plate 61. The support base 1 has a recessed portion, and the partition plate 62 and the support base 1 are placed in the recessed portion.

[0030] By using the disassembly equipment according to the embodiment of the present invention, the stator 25 can be fixed on the three positioning pins 3 through the fixing hole 251 of the stator 25, and the rotor disassembly device 5 such as a spline wrench is inserted into the inner hole of the rotor 26. While rotating the rotor 26, force is applied downward to achieve the rotor 26 to continuously rotate out of the inner cavity of the stator 25 and finally fall on the pad 63 (for example, made of a silicone pad). By using the disassembly equipment according to the embodiment of the present invention, the obvious surface scratches caused by the downward sliding of the rotor 56 during the disassembly process can be effectively reduced, while the disassembly time is greatly reduced, and the labor intensity of the workers during operation is reduced.

[0031] Although the above embodiments have been described, some features of the above embodiments may be combined to form new embodiments.

Claims

1. A disassembly device for a gerotor motor, the gerotor motor comprising a stator and a rotor arranged in the stator, characterized in that: The disassembly equipment comprises: A support seat, the support seat comprising a first part and a second part located below the first part, the first part having a first inner hole, the second part having an inner cavity communicating with the first inner hole, the first part being used to support the stator and allow the rotor to pass through the first inner hole into the inner cavity; a plurality of guide pins fixed to the first portion of the support seat, extending upward from an upper end surface of the first portion of the support seat, and configured to cooperate with fixing holes of the stator of the cycloidal motor to position the stator in radial and circumferential directions of the stator; and A rotor disassembly device is provided, wherein the rotor disassembly device is used to apply a downward force to the rotor while rotating the rotor.

2. The disassembly device for a gerotor motor according to claim 1, characterized in that: The rotor disassembly device comprises a spline wrench, and the spline wrench is used to be inserted into the inner hole of the rotor and cooperate with the splines of the inner hole of the rotor.

3. The disassembly device for a gerotor motor according to claim 1, characterized in that: The first inner hole of the first part of the support seat has the same cross-sectional shape as the inner cavity of the stator.

4. The disassembly device for a gerotor motor according to claim 1, characterized in that: The second portion of the support seat has a cylindrical shape and includes a second inner hole adjacent to the first inner hole of the first portion of the support seat, and an opening in the side wall for taking out the rotor dropped into the inner cavity.

5. The disassembly device for a gerotor motor according to claim 1, characterized in that Also includes: A bottom plate is located below the support seat, and the second portion of the support seat is fixed to the bottom plate.

6. The disassembly device for the gerotor motor according to claim 5, characterized in that Also includes: A partition is arranged between the second part of the support seat and the bottom plate, and the hardness of the partition is less than the hardness of the bottom plate.

7. The disassembly device for the gerotor motor according to claim 6, characterized in that Also includes: A pad is disposed in the second portion of the support seat and located on the partition, and the hardness of the pad is less than the hardness of the partition.

8. The disassembly device for a gerotor motor according to claim 4, characterized in that: The upper end of the second inner hole of the second part of the support seat has the same cross-sectional shape as the inner cavity of the stator.

9. The disassembly device for a gerotor motor according to claim 8, characterized in that: The first part of the support base is fixed to the second part of the support base by screws.

10. The disassembly device for a gerotor motor according to claim 1, characterized in that: The rotor disassembly device comprises: a spline portion, the spline portion being used to be inserted into the inner hole of the rotor and to cooperate with the splines of the inner hole of the rotor so as to rotate the rotor through the spline portion; and A shoulder portion is connected to the spline portion, and a diameter of the shoulder portion is larger than a diameter of an inner hole of the rotor and smaller than a diameter of an inner hole of the stator, so as to apply a downward force to the rotor through the shoulder portion.

11. The disassembly device for a gerotor motor according to claim 10, characterized in that: The rotor disassembly device further comprises: a rod connected to the shoulder; and a handle connected to the rod.

Images