CN107591963B - High-precision installation device and method for frameless motor - Google Patents
High-precision installation device and method for frameless motor Download PDFInfo
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- CN107591963B CN107591963B CN201710720047.9A CN201710720047A CN107591963B CN 107591963 B CN107591963 B CN 107591963B CN 201710720047 A CN201710720047 A CN 201710720047A CN 107591963 B CN107591963 B CN 107591963B
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Abstract
A frameless motor high precision mounting device comprising: a guide shaft (1), a bottom plate (2), a bracket (3) and an upper cover plate (4); the support (3) is arranged on the bottom plate (2), and one side of the guide shaft (1) is fixed in an installation groove of the support (3) through an upper cover plate (4); the guide shaft (1) is used as a guide track of the motor shaft (5), when the frameless motor is installed, the motor shaft (5) is sleeved on the guide shaft (1) and moves along the guide shaft (1), and when the frameless motor is moved to an installation position, the axial and radial relative positions of the motor stator (7) and the motor rotor (9) are fixed through the harmonic reducer (10), the bearing (11) and the bearing frame (8). By using the device and the method, the gap between the stator and the rotor (9) of the frameless motor and the stator and the motor (7) during installation can be ensured, the motor rotor (9) and the stator and the motor (7) are not attracted together due to overlarge attraction of a magnetic field, and the coaxiality of the motor is also greatly improved.
Description
Technical Field
The invention relates to a frameless motor mounting device and a mounting method.
Background
In order to realize hollow wiring, the frameless hollow motor is widely applied to a mechanical arm joint. The stator and the rotor of the motor are separated, however, a larger magnetic field exists between the stator and the rotor, and the ensuring of the coaxiality becomes a larger difficulty in the process of installing the motor, and especially in an integrated joint, the installation mode and the space can generate larger constraints.
The frameless motor comprises a motor stator and a motor rotor; the motor stator is arranged on the joint shell, the motor rotor is arranged on the hollow shaft, a large magnetic field exists between the stator and the rotor, and if the motor stator and the rotor are held by hands to be close to each other, the attraction force is large, and the motor stator and the rotor are attracted together. The existing installation device of the high-precision frameless motor has a complex structure and high manufacturing cost, and is not suitable for small-batch products; the simple installation method and the installation precision can not be ensured.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device and the method for mounting the frameless motor with high precision overcome the defects of the prior art, are suitable for mounting the frameless motor widely applied to the mechanical arm integrated joint, and have the advantages of simple structure, low cost, easiness in operation, high mounting precision and high motor coaxiality.
The technical solution of the invention is as follows: a frameless motor high precision mounting device comprising: the guide shaft, the bottom plate, the bracket and the upper cover plate; the bracket is arranged on the bottom plate, and one side of the guide shaft is fixed in the mounting groove of the bracket through the upper cover plate; the guide shaft is used as a guide rail of the motor shaft, and when the frameless motor is installed, the motor shaft is sleeved on the guide shaft and moves along the guide shaft.
The surface of the bottom plate is provided with a sinking groove for positioning the joint shell, and an operation window is arranged in the sinking groove.
The material of the guide shaft is stainless steel 2Cr 13.
The guide shaft is in clearance fit with the motor shaft, and the clearance is smaller than 0.01 mm.
A high-precision installation method of a frameless motor comprises the following steps:
the method comprises the following steps that firstly, a motor stator is fixedly arranged on the inner wall of a joint shell, a motor rotor is arranged on a motor shaft, and one end of the motor shaft is connected with the input end of a harmonic reducer;
secondly, mounting the support on a bottom plate, placing a guide shaft in the mounting groove of the support, covering an upper cover plate on the guide shaft, and fixing the guide shaft; sequentially sleeving a bearing frame and a bearing on a guide shaft, and moving the bearing frame to one side of a support, wherein the bearing frame is close to the support;
thirdly, mounting a port of the joint shell in a sink groove of the bottom plate, pushing a motor shaft provided with a motor rotor and a harmonic reducer into the joint shell from the other port of the joint shell, and sleeving the motor shaft on a guide shaft, so that the motor shaft moves along the guide shaft; when the harmonic reducer moves to the mounting surface in the joint shell, the motor shaft stops being pushed;
step four, rotating the motor shaft, and fixing the harmonic reducer on the mounting surface in the joint shell when the resistance borne by the motor shaft is uniform and the gap between the motor stator and the motor rotor meets the set threshold requirement in the rotating process;
mounting a bearing on a motor shaft, and fixing a bearing support in a joint shell;
and step six, removing the upper cover plate, taking out the guide shaft, and removing the joint shell from the bottom plate.
The material of the guide shaft is stainless steel 2Cr 13.
The guide shaft is in clearance fit with the motor shaft, and the clearance is smaller than 0.01 mm.
Compared with the prior art, the invention has the advantages that:
(1) the guide shaft of the high-rigidity motor shaft and the hollow shaft of the motor have high matching precision, so that the influence of the magnetic field attraction of the motor on the coaxiality during installation is reduced, and the deflection is reduced;
(2) according to the invention, the high-precision bottom plate and the support ensure that the coaxiality of the guide shaft and the hollow shaft of the motor is in the same range, so that the reliability of the product is improved;
(3) when the guide shaft is pressed, the mounting groove on the bracket is a 180-degree semicircular groove, and the mounting groove on the upper cover plate is a 175-degree small semicircle, so that the guide shaft does not shake in the mounting groove, and the positioning is accurate;
(4) according to the invention, the coaxiality of the installation base plate and the mechanical arm joint is ensured, so that the base plate and the joint form a whole, the whole body can be turned over, the installation is convenient, and the installation efficiency is improved;
(5) according to the invention, the installation operation window is arranged at the joint on the bottom plate, so that joint parts and carding motor wires can be conveniently installed from the lower part.
Drawings
FIG. 1 is a side cross-sectional view of a frameless motor high precision mounting apparatus in use;
FIG. 2 is a schematic view of a frameless motor high precision mounting apparatus in use;
fig. 3 is an oblique view of the component base plate.
Detailed Description
The invention is further illustrated with reference to the accompanying drawings:
as shown in fig. 1, 2 and 3, a high-precision mounting device for a frameless motor comprises: the device comprises a guide shaft 1, a bottom plate 2, a support 3 and an upper cover plate 4; the support 3 is arranged on the bottom plate 2, and one side of the guide shaft 1 is fixed in an installation groove of the support 3 through an upper cover plate 4; the guide shaft 1 serves as a guide rail for the motor shaft 5, and when the frameless motor is mounted, the motor shaft 5 is fitted over the guide shaft 1 and moved along the guide shaft 1.
The surface of the bottom plate 2 is provided with a sunken groove 21 for positioning the joint shell 6, and an operation window 22 is arranged in the sunken groove 21.
The material of the guide shaft 1 is stainless steel 2Cr 13. The guide shaft 1 is in clearance fit with the motor shaft 5, and the clearance is less than 0.01 mm.
A high-precision installation method of a frameless motor comprises the following steps:
firstly, fixing and installing a motor stator 7 on the inner wall of a joint shell 6 by using thread glue, fixing a motor rotor 9 on a motor shaft 5 by using thread glue, and connecting one end of the motor shaft 5 with the input end of a harmonic reducer 10 by using a screw;
secondly, mounting the support 3 on the bottom plate 2, placing the guide shaft 1 in a mounting groove of the support 3, adjusting the position of the guide shaft 1 to enable the support 3 to be close to one end of the guide shaft in the middle of the guide shaft 1, enabling the section of the guide shaft 1 to be at least 20mm away from the support 3, covering the upper cover plate 4 on the guide shaft 1, pressing the upper cover plate 4 and the support 3 by using screws, and fixing the guide shaft 1; sequentially sleeving a bearing frame 8 and a bearing 11 on the guide shaft 1 and moving to one side of the support 3, wherein the bearing frame 8 is close to the support 3;
step three, mounting a port of the joint shell 6 in a sinking groove 21 of the bottom plate 2, fixing the port by using a circle of screws, pushing the motor shaft 5 provided with the motor rotor 9 and the harmonic reducer 10 into the other port of the joint shell 6, and sleeving the motor shaft 5 on the guide shaft 1 so that the motor shaft 5 moves along the guide shaft 1; when the harmonic reducer 10 moves to the mounting surface in the joint housing 1, stopping pushing the motor shaft 5;
step four, rotating the motor shaft 5, and when the resistance borne by the motor shaft 5 is uniform and the gap between the motor stator 7 and the motor rotor 9 meets the set threshold requirement in the rotating process, fixing the harmonic reducer 10 on the mounting surface in the joint shell 6 and fixing the harmonic reducer by using a screw;
mounting a bearing 11 on the motor shaft 5, fixing a bearing bracket 8 in the joint shell 1 and connecting the bearing bracket with the joint shell by using a screw;
and step six, removing the upper cover plate 4, taking out the guide shaft 1, and removing the joint shell 6 from the bottom plate 2.
Example 1:
the frameless motor adopts Kelmer TBMS-7615-A, the gap between a motor stator 7 and a motor rotor 9 is 0.5mm, the motor stator 7 and the motor rotor 9 are respectively stuck on a joint shell 6 and a motor shaft 5 by using thread glue Tai 640, a harmonic speed reducer is SHG-25-160-2UH-LW, a guide shaft 1 is made of stainless steel 2Cr13, the coaxiality of the guide shaft 1 and the motor shaft 5 is 0.05mm, a bearing 11 is a deep groove ball bearing and is in small gap fit with the motor shaft 5, the joint shell 6 and a bottom plate 2 are fixed, 8 screws uniformly distributed for one circle are adopted, and the depth of a sunken groove 21 under the bottom plate is 1 mm.
The mounting groove on the bracket 3 is a semicircular groove of 180 degrees, the circular arc-shaped mounting hoop on the upper cover plate 4 is a small semicircle, and the central angle of the circular arc is 175 degrees.
The device has the advantages of simple structure, easiness in operation and high installation precision of the frameless motor, and is suitable for installation of the mechanical arm integrated joint frameless hollow motor which needs to be wired inside a joint.
The invention has not been described in detail in part of the common general knowledge of those skilled in the art.
Claims (3)
1. A high-precision mounting method of a frameless motor is characterized by comprising the following steps:
firstly, a motor stator (7) is fixedly arranged on the inner wall of a joint shell (6), a motor rotor (9) is arranged on a motor shaft (5), and one end of the motor shaft (5) is connected with the input end of a harmonic reducer (10);
secondly, mounting the support (3) on the bottom plate (2), placing the guide shaft (1) in a mounting groove of the support (3), covering the upper cover plate (4) on the guide shaft (1), and fixing the guide shaft (1); sequentially sleeving a bearing frame (8) and a bearing (11) on the guide shaft (1) and moving to one side of the support (3), wherein the bearing frame (8) is close to the support (3);
thirdly, mounting a port of the joint shell (6) in a sinking groove (21) of the bottom plate (2), pushing a motor shaft (5) provided with a motor rotor (9) and a harmonic reducer (10) into the joint shell (6) from the other port of the joint shell and sleeving the motor shaft (5) on the guide shaft (1), so that the motor shaft (5) moves along the guide shaft (1); when the harmonic reducer (10) moves to the mounting surface in the joint shell (1), stopping pushing the motor shaft (5);
step four, rotating the motor shaft (5), and fixing the harmonic reducer (10) on the mounting surface in the joint shell (6) when the resistance borne by the motor shaft (5) is uniform and the gap between the motor stator (7) and the motor rotor (9) meets the set threshold requirement in the rotating process;
mounting a bearing (11) on the motor shaft (5), and fixing a bearing support (8) in the joint shell (1);
and sixthly, removing the upper cover plate (4), taking out the guide shaft (1), and removing the joint shell (6) from the bottom plate (2).
2. The method for mounting the frameless motor with high precision as claimed in claim 1, wherein the method comprises the following steps: the guide shaft (1) is made of stainless steel 2Cr 13.
3. The method for mounting the frameless motor with high precision as claimed in claim 2, wherein: the guide shaft (1) is in clearance fit with the motor shaft (5), and the clearance is smaller than 0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720047.9A CN107591963B (en) | 2017-08-21 | 2017-08-21 | High-precision installation device and method for frameless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720047.9A CN107591963B (en) | 2017-08-21 | 2017-08-21 | High-precision installation device and method for frameless motor |
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| Publication Number | Publication Date |
|---|---|
| CN107591963A CN107591963A (en) | 2018-01-16 |
| CN107591963B true CN107591963B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710720047.9A Active CN107591963B (en) | 2017-08-21 | 2017-08-21 | High-precision installation device and method for frameless motor |
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| CN (1) | CN107591963B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211018579U (en) * | 2019-12-26 | 2020-07-14 | 南京磁谷科技有限公司 | Rotor assembly tool of horizontal permanent magnet motor |
| CN113037003B (en) * | 2021-04-13 | 2022-03-11 | 深圳市泰道精密机电有限公司 | Arc frameless motor with high torque density |
| CN113783372A (en) * | 2021-09-15 | 2021-12-10 | 臻驱科技（上海）有限公司 | Manufacturing method of motor bridge assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2896669Y (en) * | 2005-11-16 | 2007-05-02 | 许晓华 | Six-point die-plunging device for motor housing |
| CN200983542Y (en) * | 2006-08-18 | 2007-11-28 | 许晓华 | Brushless electromotor assembly frame |
| CN101369759A (en) * | 2008-10-15 | 2009-02-18 | 沈阳工业大学 | Assembly device and application method for disk type motor |
| CN106712414A (en) * | 2016-12-25 | 2017-05-24 | 中船重工电机科技股份有限公司 | Large-scale rotor in-housing adjusting assembling mechanism |
-
2017
- 2017-08-21 CN CN201710720047.9A patent/CN107591963B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2896669Y (en) * | 2005-11-16 | 2007-05-02 | 许晓华 | Six-point die-plunging device for motor housing |
| CN200983542Y (en) * | 2006-08-18 | 2007-11-28 | 许晓华 | Brushless electromotor assembly frame |
| CN101369759A (en) * | 2008-10-15 | 2009-02-18 | 沈阳工业大学 | Assembly device and application method for disk type motor |
| CN106712414A (en) * | 2016-12-25 | 2017-05-24 | 中船重工电机科技股份有限公司 | Large-scale rotor in-housing adjusting assembling mechanism |
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| CN107591963A (en) | 2018-01-16 |
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