Stator fixing tool for testing frameless torque motor
By designing a stator fixing tool for frameless torque motor testing, the stator is clamped with the pressing action of the elastic arm, the problem of the stator being difficult to disassemble and affecting sales is solved, and the convenience of multiple tests and cleaning is achieved.
Patent Information
- Application Number
- CN202421273819.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The stator is not easy to disassemble after testing, which affects repeated tests, and the bonding marks are difficult to clean, affecting the sale of the stator.
A stator fixing tool for frameless torque motor testing is designed, including mounting cylinders, sleeves and extrusion cylinders, which are secured by the extrusion action of the elastic arm, which facilitates disassembly and repeated testing.
The stator clamping and multiple tests are realized. The test process does not affect the appearance and sales of the stator, and simplifies the disassembly and cleaning process of the stator.
Smart Images
Figure CN222926748U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of frameless torque motors, and particularly to a stator fixing tooling for testing frameless torque motors. Background Art
[0002] A frameless torque motor refers to a motor that includes a rotor and a stator of the motor, but does not include the housing and the rotating shaft of the motor. Users can install the rotor and the stator according to the characteristics of their own products. The frameless torque motor has no housing and rotating shaft, can provide more space for other devices, and the hollow part is also easier to route wires. It is widely used in fields such as aerospace, steering joints, and medical robots.
[0003] For the manufacturer, the frameless torque motor needs to be tested before leaving the factory to ensure that the parameters of the motor meet the design requirements. Since the frameless torque motor has no housing and rotating shaft, during the test, the manufacturer often fixes the rotor to a rotating shaft by bonding and fixes the stator to a housing by bonding to achieve the test.
[0004] However, after the test using this method, the stator is not easy to disassemble from the housing, which is not convenient for repeated testing. Moreover, even after the stator is disassembled, there are bonding marks on the stator, which are not easy to clean up and affect the sale of the stator. Based on this, this application proposes a stator fixing tooling for testing frameless torque motors. Utility Model Content
[0005] This application provides a stator fixing tooling for testing frameless torque motors, which can clamp the stator. After the test is completed, the stator can be disassembled to achieve multiple tests, and the appearance of the stator is not affected during the test, nor is the sale of the stator affected.
[0006] To solve the above technical problems, this application adopts the following technical solutions:
[0007] A stator fixing tooling for frameless torque motor testing, which is used to install and fix the stator, includes an installation cylinder, a sleeve and a pressing cylinder. The inner wall of the installation cylinder is provided with an annular baffle. The inner wall of one end of the installation cylinder away from the annular baffle is provided with internal threads. The sleeve is inserted into the installation cylinder. The end face of the first end of the sleeve abuts against the annular baffle. The outer edge of the second end of the sleeve is provided with a plurality of elastic arms. The plurality of elastic arms are evenly distributed along the circumferential direction of the sleeve. The thickness of the elastic arm is less than the wall thickness of the sleeve to form a step at the second end of the sleeve. The free end of the elastic arm inclines towards the center of the sleeve. The size of the root of the elastic arm is equal to the outer diameter of the stator. The outer wall of the pressing cylinder is provided with external threads, and the external threads are matched with the internal threads. The inner wall of the pressing cylinder abuts against the outer wall of the elastic arm. When the pressing cylinder moves towards the annular baffle, the pressing cylinder presses the elastic arm so that the elastic arm presses the outer wall of the stator.
[0008] During use, first prop up the free end of the elastic arm to make the elastic arm incline outwards. Insert the stator to be tested into the plurality of elastic arms. The stator abuts against the step at the second end of the sleeve under the elastic force of the elastic arm. Then insert the entire sleeve into the installation cylinder so that the first end of the sleeve abuts against the annular baffle. Then screw the pressing cylinder onto the internal threads of the installation cylinder. As the pressing cylinder moves towards the annular baffle, the pressing cylinder continuously presses the elastic arm, causing the elastic arm to press the stator, and clamping the stator between the elastic arm and the step at the second end of the sleeve. After the test is completed, reverse the operation for disassembly.
[0009] Compared with the prior art, the stator fixing tooling for frameless torque motor testing can realize the clamping of the stator. After the test is completed, the stator can be disassembled for multiple tests, and the appearance of the stator is not affected during the test, nor is the sale of the stator affected.
[0010] In an embodiment of the present application, the inner wall of the pressing cylinder is inclined.
[0011] In an embodiment of the present application, the smaller inner diameter end of the pressing cylinder is provided with a plurality of clamping grooves.
[0012] In an embodiment of the present application, the slope of the elastic arm is 1:40.
[0013] In an embodiment of the present application, the number of the elastic arms is 6.
[0014] In an embodiment of the present application, end caps are provided at both ends of the installation cylinder, and the end caps are provided with bearing cavities.
[0015] In an embodiment of the present application, the thickness of the elastic arm is one-half of the wall thickness of the sleeve.
[0016] In an embodiment of the present application, the thickness of the elastic arm is 2 mm. Description of the Drawings
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0018] Figure 1 Schematic three-dimensional structure diagram of a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0019] Figure 2 Schematic cross-sectional structure diagram of a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0020] Figure 3 Schematic three-dimensional structure diagram of an installation cylinder used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0021] Figure 4 Schematic three-dimensional structure diagram of a sleeve and an elastic arm used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0022] Figure 5 Schematic cross-sectional structure diagram of an extrusion cylinder used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0023] Figure 6 Schematic three-dimensional structure diagram of an end cover used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application.
[0024] Reference Signs:
[0025] 010, stator; 100, installation cylinder; 110, annular baffle; 200, sleeve; 210, elastic arm; 300, extrusion cylinder; 310, clamping groove; 400, end cover; 410, bearing cavity. Detailed Embodiments
[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following clearly and completely describes the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts also belong to the scope of protection of the present application.
[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0028] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.
[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0030] Figure 1 Schematic perspective view of a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 2 Schematic cross-sectional view of a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 3 Schematic perspective view of an installation cylinder used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 4 Schematic perspective view of a sleeve and an elastic arm used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 5 Schematic cross-sectional view of an extrusion cylinder used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 6 Schematic perspective view of an end cap used in a stator fixing tooling for frameless torque motor testing provided by an embodiment of the present application.
[0031] An embodiment of the present application provides a stator fixing tooling for frameless torque motor testing, which is used to install and fix a stator 010, such as Figure 1 and Figure 2As shown, it includes an installation cylinder 100, a sleeve 200, and an extrusion cylinder 300. Among them, the installation cylinder 100 is a structure for installing and supporting other components, the sleeve 200 is a component for installing the stator 010, and the extrusion cylinder 300 cooperates with the elastic arms 210 on the sleeve 200 to clamp the stator 010.
[0032] As Figure 3 shown, an annular baffle 110 is provided on the inner wall of the installation cylinder 100. The annular baffle 110 can be arranged near one end of the installation cylinder 100. An internal thread (not shown in the figure) is provided on the inner wall of the end of the installation cylinder 100 away from the annular baffle 110, and the internal thread has a certain length.
[0033] As Figure 2 shown, the sleeve 200 is inserted into the installation cylinder 100, and the end face of the first end of the sleeve 200 abuts against the annular baffle 110 to realize the installation and positioning of the sleeve 200.
[0034] As Figure 4 shown, a plurality of elastic arms 210 are provided on the outer edge of the second end of the sleeve 200. The plurality of elastic arms 210 are evenly distributed along the circumferential direction of the sleeve 200, and there is a gap between adjacent elastic arms 210. The thickness of the elastic arm 210 is less than the wall thickness of the sleeve 200 to form a step at the second end of the sleeve 200, and the step can realize limiting and supporting. The free end of the elastic arm 210 inclines towards the direction close to the center of the sleeve 200. That is to say, the elastic arm 210 extends obliquely and inwards. The size of the root of the elastic arm 210 is equal to the outer diameter of the stator 010. The inclination degree of the elastic arm 210 is not large. When the free end of the elastic arm 210 is propped up by hand, the elastic arm 210 can expand, and the size is larger than the outer diameter of the stator 010, so that the stator 010 can be inserted into the plurality of elastic arms 210.
[0035] As Figure 2 shown, an external thread (not shown in the figure) is provided on the outer wall of the extrusion cylinder 300. The external thread cooperates with the internal thread. The inner wall of the extrusion cylinder 300 abuts against the outer wall of the elastic arm 210. When the extrusion cylinder 300 moves towards the annular baffle 110, the extrusion cylinder 300 squeezes the elastic arm 210 so that the elastic arm 210 squeezes the outer wall of the stator 010 to generate an obliquely inward acting force, thereby clamping the stator 010 axially between the elastic arm 210 and the step at the second end of the sleeve 200.
[0036] In use, first prop up the free end of the elastic arm 210 to make the elastic arm 210 tilt outwards, insert the stator 010 to be tested into the plurality of elastic arms 210, and the step at the second end of the sleeve 200 abuts against the stator 010 under the elastic force of the elastic arm 210. Then insert the entire sleeve 200 into the mounting cylinder 100 so that the first end of the sleeve 200 abuts against the annular baffle 110. Next, screw the extrusion cylinder 300 onto the internal thread of the mounting cylinder 100. As the extrusion cylinder 300 moves towards the annular baffle 110, the extrusion cylinder 300 continuously squeezes the elastic arm 210, causing the elastic arm 210 to squeeze the stator 010 and clamping the stator 010 between the elastic arm 210 and the step at the second end of the sleeve 200. After the test is completed, reverse the operation for disassembly.
[0037] Compared with the prior art, the stator fixing tooling for frameless torque motor testing can clamp the stator 010. After the test is completed, the stator 010 can be disassembled for multiple tests, and the appearance of the stator 010 is not affected during the test, nor is the sale of the stator 010 affected.
[0038] In some embodiments, as Figure 5 shown, the inner wall of the extrusion cylinder 300 is inclined, so that the inner wall of the extrusion cylinder 300 has a structure with a large end and a small end. The inner wall of the extrusion cylinder 300 and the outer wall of the elastic arm 210 are both inclined, so that the contact area between the extrusion cylinder 300 and the elastic arm 210 is larger and the extrusion effect is better.
[0039] In some embodiments, as Figure 5 shown, a plurality of clamping grooves 310 are provided at the smaller inner diameter end of the extrusion cylinder 300. Tools such as sleeves can be used to be clamped in the clamping grooves 310 of the extrusion cylinder 300, which is convenient for rotating the extrusion cylinder 300 and the operation is more convenient. Generally, the number of clamping grooves 310 is 4.
[0040] In some embodiments, the slope of the elastic arm 210 is 1:40. The slope of the elastic arm 210 is small and slightly inclined, which is also convenient for manually propping up the free end of the elastic arm 210 and inserting the stator 010 into the plurality of elastic arms 210.
[0041] In some embodiments, as Figure 4 shown, the number of elastic arms 210 is 6, and the stator 010 can be squeezed from 6 positions, so that the stator 010 is stressed evenly and the extrusion effect is better.
[0042] In some embodiments, end caps 400 are provided at both ends of the mounting cylinder 100. The end caps 400 are detachably connected to the mounting cylinder 100, for example, they can be threadedly connected or have a shaft-hole fit. As Figure 6As shown, a structure for accommodating bearings, namely a bearing cavity 410, is provided on the end cover 400. During testing, the bearings at both ends of the rotating shaft of the rotor are correspondingly placed into the bearing cavity 410 to achieve the mating installation of the rotor and the stator 010, and testing can be carried out.
[0043] In some embodiments, the thickness of the elastic arm 210 is one-half of the wall thickness of the sleeve 200, such that the depth of the step at the second end of the sleeve 200 is approximately one-half of the wall thickness of the sleeve 200, enabling the limiting and supporting of the stator 010. Of course, the thicknesses of the two can also be appropriately adjusted according to the actual situation and are not limited herein.
[0044] In some embodiments, the thickness of the elastic arm 210 is 2 mm, such that the elastic arm 210 has good elasticity, facilitating the tester to manually prop up the elastic arm 210. After removing the external force on the elastic arm 210, the elastic arm 210 is also more likely to be reset.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A stator fixing tool for testing a frameless torque motor, used for installing and fixing a stator, characterized in that: include: A mounting tube, wherein an annular baffle is provided on the inner wall of the mounting tube, and an inner thread is provided on the inner wall of one end of the mounting tube away from the annular baffle; A sleeve, wherein the sleeve is inserted into the mounting tube, an end surface of a first end of the sleeve abuts against the annular baffle, a plurality of elastic arms are arranged on an outer edge of a second end of the sleeve, the plurality of elastic arms are evenly distributed along the circumference of the sleeve, a thickness of the elastic arm is less than a wall thickness of the sleeve to form a step at the second end of the sleeve, a free end of the elastic arm is inclined toward a direction close to the center of the sleeve, and a size of a root of the elastic arm is equal to an outer diameter of the stator; An extrusion cylinder, wherein the outer wall of the extrusion cylinder is provided with an external thread, the external thread cooperates with the internal thread, and the inner wall of the extrusion cylinder abuts against the outer wall of the elastic arm; When the extrusion cylinder moves toward the annular baffle, the extrusion cylinder presses the elastic arm so that the elastic arm presses the outer wall of the stator.
2. The stator fixing fixture for frameless torque motor testing according to claim 1, characterized in that: The inner wall of the extrusion cylinder is inclined.
3. The stator fixing fixture for testing a frameless torque motor according to claim 2, characterized in that: The smaller inner diameter end of the extrusion cylinder is provided with a plurality of clamping grooves.
4. The stator fixing fixture for testing a frameless torque motor according to claim 1, characterized in that: The slope of the elastic arm is 1:
40.
5. The stator fixing fixture for frameless torque motor testing according to claim 1, characterized in that: The number of the elastic arms is 6.
6. The stator fixing fixture for testing a frameless torque motor according to any one of claims 1 to 5, characterized in that: End covers are provided at both ends of the installation cylinder, and the end covers are provided with bearing cavities.
7. The stator fixing fixture for testing a frameless torque motor according to any one of claims 1 to 5, characterized in that: The thickness of the elastic arm is half of the wall thickness of the sleeve.
8. The stator fixing fixture for frameless torque motor testing according to claim 7, characterized in that: The thickness of the elastic arm is 2 mm.