Assembly testing fixture for stator assembly

Abstract

The utility model provides an assembling testing fixture for a stator assembly, which comprises a testing fixture body, the testing fixture body is in a hollow cylinder shape, the inner wall of the testing fixture body is provided with at least one testing fixture groove, the testing fixture body is provided with two parallel end faces, and the ridge on the testing fixture groove is perpendicular to the end faces of the testing fixture body. The detection tool grooves are used for contacting iron core protruding keys on the outer wall of the stator iron core, and the number of the detection tool grooves is consistent with the number of the iron core protruding keys. According to the utility model, through the hollow cylindrical gauge body and the gauge groove arranged on the inner wall of the gauge body, the gauge groove has a standard size and is matched with the iron core convex key on the outer wall of the stator iron core, when in use, the assembly gauge is sleeved into a stator assembly, and if the assembly gauge can smoothly pass through the stator assembly, the stator assembly can be assembled. The perpendicularity of the iron core convex keys relative to the end face of the iron core, the position degree of each convex key and the perpendicularity of the iron core relative to the end face of the iron core can be detected at a time, the operation is convenient, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor manufacturing, in particular to an assembly inspection tool for a stator assembly. Background Art

[0002] Generally, the motor consists of a housing, a stator assembly and a rotor assembly. The stator assembly consists of an iron core and a winding. The stator assembly is fixedly installed inside the housing. In order to facilitate the assembly and installation of the stator assembly and the housing, a number of convex keys are provided on the outer wall of the iron core, and grooves matching the convex keys are provided on the inner wall of the housing. The iron core and the housing are interference fit, and the housing needs to be heated before being inserted into the iron core.

[0003] In order to smoothly fit the core and the shell together, a test fixture is required to detect the basic size of the key on the core, the verticality of the key relative to the core end face, the position of each key, the outer diameter of the core, and the verticality of the core to the core end face. The test fixture in the prior art has a standard size test groove, which is inserted into the core key through the test groove and moved axially for testing.

[0004] In the process of realizing the utility model, the inventors found that there are at least the following problems in the prior art: the existing inspection fixture can only detect one cam at a time, the inspection efficiency is low, and it can only detect the basic size of the cam, but cannot detect the verticality of the cam relative to the end face of the core and the position of each cam, nor can it detect the outer diameter of the core and the verticality of the core relative to the end face of the core. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] Therefore, the purpose of the utility model is to provide an assembly inspection fixture for a stator assembly which is easy to use and can detect dimensional tolerance and verticality tolerance at one time.

[0007] In order to achieve the above-mentioned purpose, the utility model proposes an assembly inspection fixture for a stator assembly, comprising:

[0008] A gauge body, wherein the gauge body is in the shape of a hollow cylinder, and at least one gauge groove is provided on the inner wall of the gauge body. The gauge body has two parallel end faces, and the ridges on the gauge groove are perpendicular to the end faces of the gauge body. The gauge groove is used to contact the core convex key on the outer wall of the stator core, and the number of the gauge grooves is consistent with the number of the core convex keys.

[0009] According to the assembly gauge of the stator assembly of the utility model, a gauge groove is arranged on the inner wall of the gauge body through a hollow cylindrical gauge body, the gauge groove is of standard size, and cooperates with the core convex key on the outer wall of the stator core, and the inner wall of the gauge body cooperates with the outer wall of the stator core. When in use, the assembly gauge is inserted into the stator assembly. If the assembly gauge can pass through the stator assembly smoothly, it indicates that the size of the core convex key and the outer diameter of the core are qualified, and the verticality of the core convex key relative to the core end face and the position of each convex key and the verticality of the core relative to the core end face can be detected at one time, which is convenient for operation and improves the detection efficiency.

[0010] According to an embodiment of the utility model, the number of the gauge grooves is 4 and they are evenly distributed along the circumference of the gauge body.

[0011] According to an embodiment of the utility model, the gauge body is provided with a plurality of weight removal holes, and the weight removal holes are separated from the gauge groove.

[0012] According to an embodiment of the present invention, the number of the de-weighting holes is 4 and they are evenly distributed along the circumference of the gauge body.

[0013] According to an embodiment of the utility model, a handle is further included, and the handle is connected to the gauge body.

[0014] According to an embodiment of the present invention, the number of the handles is 2 and they are symmetrically distributed along two sides of the gauge body.

[0015] According to an embodiment of the present invention, the handle is welded to the gauge body, and the handle and the gauge body are both made of steel.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0018] Figure 1 It is a structural schematic diagram of an assembly inspection fixture for a stator assembly proposed in one embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the bottom of an assembly inspection fixture for a stator assembly according to an embodiment of the utility model.

[0020] Figure 3 It is a working schematic diagram of the stator assembly assembly inspection fixture proposed in one embodiment of the utility model being applied to the stator assembly.

[0021] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part A.

[0022] Description of reference numerals:

[0023] 1-gauge body, 2-gauge groove, 3-weight removal hole, 4-handle, 5-stator core, 51-core convex key. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0025] Combination Figures 1 to 4 As shown, the embodiment of the utility model proposes an assembly gauge for a stator assembly, including a gauge body 1. The gauge body 1 is in the shape of a hollow cylinder, and at least one gauge groove 2 is provided on the inner wall of the gauge body 1. The gauge body 1 has two parallel end faces, and the ridges on the gauge groove 2 are perpendicular to the end faces of the gauge body 1. The gauge groove 2 is used to contact the core convex key 51 on the outer wall of the stator core 5, and the number of the gauge grooves 2 is consistent with the number of the core convex keys 51.

[0026] The size of the gauge body 1 can be selected according to the standard size of the stator assembly to be measured. Since the motor housing and the stator assembly are interference fit, the motor housing needs to be heated and hot-fitted with the stator core. The gauge body 1 simulates the heated motor housing, so the internal structure and size of the gauge body 1 are consistent with the internal structure and size of the heated motor housing. The inner wall of the gauge body 1 imitates the outer wall of the stator core, and the ridges on the gauge groove 2 are perpendicular to the end face of the gauge body 1, which can detect the basic size and verticality tolerance problems of the stator core.

[0027] Perpendicularity refers to the state in which the measured element on the part maintains the correct 90° angle relative to the reference element. This is also known as the degree to which two elements remain orthogonal. Positionality refers to the position of one or more dimensional elements relative to each other or relative to one or more references. If the inner diameter of the stator core, the size of the core cam, the verticality of the stator core relative to the core end face, the verticality of the core cam relative to the core end face, and the positionality of each cam are out of tolerance, especially if they exceed the maximum allowable value, the gauge body 1 cannot be inserted or completely inserted into the stator core 5.

[0028] According to the assembly gauge of the stator assembly of the embodiment of the utility model, a gauge groove is arranged on the inner wall of the gauge body through a hollow cylindrical gauge body, the gauge groove is of standard size, and cooperates with the core convex key on the outer wall of the stator core, and the inner wall of the gauge body cooperates with the outer wall of the stator core. When in use, the assembly gauge is inserted into the stator assembly. If the assembly gauge can pass through the stator assembly smoothly, it indicates that the size of the core convex key and the outer diameter of the core are qualified, thereby the verticality of the core convex key relative to the core end face and the position of each convex key, and the verticality of the core relative to the core end face can be detected at one time, which is convenient for operation and improves the detection efficiency.

[0029] In some embodiments, the number of the gauge grooves 2 is 4, which are evenly distributed along the circumference of the gauge body 1. This arrangement is force-balanced. Any two of the four gauge grooves 2 that are opposite to each other at 180 degrees can be positioned as an assembly gauge, and the set inspection can be carried out after positioning. The gauge body 1 is provided with a plurality of deweighting holes 3, which are separated from the gauge grooves 2. The number, size and shape of the deweighting holes 3 are not specifically limited and can be arbitrarily selected and designed. Exemplarily, the number of the deweighting holes 3 is 4, which are evenly distributed along the circumference of the gauge body 1. The function of the deweighting holes is to reduce the overall weight of the assembly gauge and facilitate personnel operation.

[0030] In order to facilitate the operator to grab the assembly fixture of the stator assembly, the assembly fixture also includes a handle 4, which is connected to the fixture body 1. The handle 4 can be coupled to the fixture body 1 by hinges, welding, bonding, detachable connections, etc. or a combination thereof. The material of the handle 4 can be plastic, metal or alloy. Exemplarily, the handle 4 is welded to the fixture body 1, and the handle 4 and the fixture body 1 are both made of steel. For example, the handle 4 is made of 45 steel, and the fixture body is made of Cr12 mold steel, which has good wear resistance.

[0031] For the convenience of operation, there are two handles 4, which are symmetrically distributed along the two sides of the gauge body 1. The operator can complete the operation of assembling the gauge by grasping the handles 4 with both hands.

[0032] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, the directions or positional relationships indicated by the terms "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An assembly inspection fixture for a stator assembly, characterized in that: include: A gauge body (1) is provided, wherein the gauge body (1) is in the shape of a hollow cylinder, at least one gauge groove (2) is provided on the inner wall of the gauge body (1), the gauge body (1) has two parallel end faces, the ridges on the gauge groove (2) are perpendicular to the end faces of the gauge body (1), the gauge groove (2) is used to contact with a core cam (51) on the outer wall of a stator core (5), and the number of the gauge grooves (2) is the same as the number of the core cams (51).

2. The assembly inspection fixture for the stator assembly according to claim 1, characterized in that: The number of the gauge grooves (2) is 4 and they are evenly distributed along the circumference of the gauge body (1).

3. The assembly inspection fixture for the stator assembly according to claim 1, characterized in that: The gauge body (1) is provided with a plurality of weight removal holes (3), and the weight removal holes (3) are separated from the gauge groove (2).

4. The assembly inspection fixture for the stator assembly according to claim 3, characterized in that: The number of the deweighting holes (3) is 4, and they are evenly distributed along the circumference of the gauge body (1).

5. The assembly inspection fixture for the stator assembly according to any one of claims 1 to 4, characterized in that: It also comprises a handle (4), wherein the handle (4) is connected to the gauge body (1).

6. The assembly inspection fixture for the stator assembly according to claim 5, characterized in that: The number of the handles (4) is two, and they are symmetrically distributed along the two sides of the gauge body (1).

7. The assembly inspection fixture for the stator assembly according to claim 5, characterized in that: The handle (4) is welded to the gauge body (1), and the handle (4) and the gauge body (1) are both made of steel.

Images