Tool for detecting height dimension of motor end cover

Abstract

The utility model relates to a tool for detecting the height dimension of a motor end cover, belongs to the technical field of motors, and solves the technical problems of insufficient measurement precision, large subjective human influence, low detection efficiency and the like when the height dimension of the motor end cover is measured in the prior art. According to the solution, the motor end cover height dimension detection tool is used for detecting the height dimension of a to-be-detected end cover, the center of the to-be-detected end cover is provided with a bearing chamber, and the edge of the upper surface of the to-be-detected end cover is provided with an end cover spigot. The go gauge detection block is arranged at one end of the base; the no-go gauge detection block is arranged at the other end of the base; the fixing bolts are used for fixedly connecting the go gauge detection block with the base and fixedly connecting the no-go gauge detection block with the base; and the supporting block is movably arranged on the base after being assembled with the bearing chamber of the end cover to be tested. Compared with the prior art, the device has the advantages of high efficiency, high precision, suitability for batch detection and the like.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a tooling for detecting the height difference of motor end caps. Background Technology

[0002] During the assembly of the motor end cover, the accuracy of its height dimensions is crucial, as it directly affects the motor's axial dimensional chain. For example... Figure 1 The motor end cover shown in the figure has dimension B as its height. Therefore, its dimensional tolerance is generally taken as H9 grade. Considering that dimension B is 18 to 30 mm, the tolerance range is 0 to +0.052 mm.

[0003] However, existing methods for measuring the height of motor end caps typically involve placing the end cap with the stop facing upwards on a platform, placing a parallel straightedge on the upper surface of the end cap stop, and then using a depth gauge to measure the distance between the two end faces corresponding to the height difference, calculating the difference to obtain the height of the motor end cap. While this method is feasible, it has significant drawbacks: 1) The minimum graduation of the depth gauge is 0.02mm, which cannot meet the H9 tolerance requirement, resulting in insufficient measurement accuracy; 2) The depth gauge measurement process involves considerable human intervention, leading to significant deviations due to subjective human influence; 3) It is unsuitable for batch inspection, resulting in low inspection efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology and solve the technical problems of insufficient measurement accuracy, large influence of subjective human factors, and low detection efficiency when measuring the height of motor end caps, this utility model provides a tooling for detecting the height of motor end caps.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a fixture for detecting the height difference of a motor end cover, used to detect the height difference of the end cover to be tested. The end cover to be tested has a bearing chamber at its center and an end cover stop at the edge of its upper surface. The detection fixture includes:

[0007] A base, used for support and holding;

[0008] A go gauge detection block, wherein the go gauge detection block is disposed at one end of the base;

[0009] A stop gauge detection block is located at the other end of the base;

[0010] Fixing bolts are used to fix the go gauge block and the base, and the no-go gauge block and the base in a fixed connection.

[0011] The support block is movably mounted on the base after being assembled with the bearing chamber of the end cover to be tested.

[0012] Furthermore, the base, go gauge detection block, no-go gauge detection block, and support block are all made of steel-bonded hard alloy.

[0013] Furthermore, the tolerance of the go gauge detection block is -0.057 to -0.052, and the tolerance of the no-go gauge detection block is +0.005 to +0.01.

[0014] Furthermore, the go gauge detection block can be replaced according to the tolerance zone of the end cap to be tested.

[0015] Furthermore, the diameter of the support block matches the diameter of the bearing chamber of the end cap to be tested.

[0016] Furthermore, the basic dimensions of the support block are the sum of the basic height dimensions of the end cap to be tested and the basic height dimensions of the go gauge or stop gauge detection block.

[0017] The beneficial effects achieved by this utility model are as follows: This utility model selects a go gauge detection block, a no-go gauge detection block and a support block to transform the difficult-to-measure height and height dimensions of the end cap to be measured into tooling dimensions that are convenient for processing and measurement. It transforms the traditional method of requiring multiple measurements into a single processing and measurement, thereby improving efficiency and measurement accuracy, reducing the influence of human subjectivity, and making it suitable for batch testing.

[0018] Compared with existing technologies, this invention has the advantages of high efficiency, high precision, and suitability for batch testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the end cap to be tested in this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the testing fixture in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the testing fixture in this utility model when testing the end cap to be tested.

[0022] In the diagram: 1. End cap to be tested; 2. Bearing chamber; 3. End cap stop; 4. Base; 5. Go gauge test block; 6. No-go gauge test block; 7. Fixing bolt; 8. Support block. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 3 As shown, a fixture for detecting the height difference of a motor end cover is provided, used to detect the height difference of an end cover 1 to be tested. The end cover 1 to be tested has a bearing chamber 2 at its center, and an end cover stop 3 is provided at the edge of the upper surface of the end cover 1. The fixture includes:

[0025] Base 4, which is used for support and holding;

[0026] Go gauge detection block 5, which is located at one end of the base 4;

[0027] Stop gauge detection block 6, which is located at the other end of the base 4;

[0028] Fixing bolt 7, which is used to fix the go gauge detection block 5 and the base 4, and the no-go gauge detection block 6 and the base 4;

[0029] The support block 8 is movably mounted on the base 4 after being assembled with the bearing chamber 2 of the end cover 1 to be tested.

[0030] Specifically, when assembling the support block 8 with the bearing chamber 2 of the end cover 1 to be tested, the end cover 1 to be tested is inverted to ensure that the end cover stop 3 of the end cover 1 is facing downwards, and the support block 8 is placed inside the bearing chamber 2. To facilitate the placement of the support block 8 inside the bearing chamber 2, the bearing chamber 2 and the support block 8 are fitted with a clearance of 0.1 to 0.2 mm in both directions.

[0031] The base 4, the go gauge detection block 5, the no-go gauge detection block 6, and the support block 8 are all made of steel-bonded hard alloy.

[0032] Specifically, the use of steel-bonded cemented carbide material can better improve the wear resistance and precision of the base 4, go gauge detection block 5, no-go gauge detection block 6 and support block 8. During processing, the base 4, go gauge detection block 5, no-go gauge detection block 6 and support block 8 can be made of steel-bonded cemented carbide GT35 through quenching and grinding.

[0033] The tolerance of the go gauge detection block 5 is -0.057 to -0.052, and the tolerance of the stop gauge detection block 6 is +0.005 to +0.01.

[0034] Specifically, this configuration allows the go gauge block 5 to detect the maximum height dimension of the end cap 1 to be tested, and the no-go gauge block 6 to detect the minimum height dimension of the end cap 1 to be tested, thus satisfying the tolerance requirements of H9 grade.

[0035] The gauge block 5 can be replaced according to the tolerance zone of the end cap 1 to be tested.

[0036] Specifically, when the tolerance zone of the end cover 1 to be tested is different, the setting of the fixing bolt 7 makes it convenient to replace the gauge block 5 with different tolerances according to the tolerance zone of the end cover 1 to be tested.

[0037] The diameter of the support block 8 is matched with the diameter of the bearing chamber 2 of the end cover 1 to be tested.

[0038] The basic dimensions of the support block 8 are the sum of the basic height dimensions of the end cap 1 to be tested and the basic height dimensions of the go gauge detection block 5 or the stop gauge detection block 6.

[0039] Specifically, the support block 8 can also be replaced according to the specifications of the end cap 1 to be tested, making it more versatile.

[0040] The working process of this utility model is as follows:

[0041] Prepare a base 4, a go gauge detection block 5, a no-go gauge detection block 6, and a support block 8 of the corresponding size according to the specifications and tolerance zone of the end cap 1 to be tested. Use fixing bolts 7 to fix the go gauge detection block 5 to the base 4 and the no-go gauge detection block 6 to the base 4.

[0042] With the end cap stop 3 of the end cap 1 to be tested facing downwards, the support block 8 is placed inside the bearing chamber 2 and movably mounted on the base 4. Move the end cap 1 and the support block 8 left and right. When the lower end face of the end cap stop 3 can pass through the go gauge detection block 5 but cannot pass through the no-go gauge detection block 6, then the height and low dimensions of the end cap 1 to be tested meet the requirements. Otherwise, in other cases, the height and low dimensions of the end cap 1 to be tested are unqualified.

[0043] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, modifications can still be made to the embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixture for detecting the height difference of an end cover of a motor, used to detect the height difference of an end cover (1) to be tested, wherein the end cover (1) to be tested has a bearing chamber (2) at its center and an end cover stop (3) is provided at the edge of the upper surface of the end cover (1), characterized in that: The testing fixtures include: The base (4) is used for support and holding; A go gauge detection block (5) is located at one end of the base (4); Stop gauge detection block (6), the stop gauge detection block (6) is located at the other end of the base (4); Fixing bolts (7) are used to fix the go gauge block (5) and the base (4), and the no-go gauge block (6) and the base (4) to each other. The support block (8) is movably mounted on the base (4) after being assembled with the bearing chamber (2) of the end cover (1) to be tested.

2. The motor end cover high-low dimension detection tool of claim 1, wherein: The base (4), the go gauge detection block (5), the no-go gauge detection block (6), and the support block (8) are all made of steel-bonded hard alloy.

3. The motor end cover high-low dimension detection tool of claim 1, wherein: The tolerance of the go gauge detection block (5) is -0.057 to -0.052, and the tolerance of the stop gauge detection block (6) is +0.005 to +0.

01.

4. The motor end cover high-low dimension detection tool of claim 1, wherein: The gauge test block (5) can be replaced according to the tolerance zone of the end cap (1) to be tested.

5. The motor end cover high-low dimension detection tool of claim 1, wherein: The diameter of the support block (8) matches the diameter of the bearing chamber (2) of the end cover (1) to be tested.

6. The motor end cover high-low dimension detection tool of claim 1, wherein: The basic dimensions of the support block (8) are the sum of the basic height dimensions of the end cap (1) to be tested and the basic height dimensions of the go gauge detection block (5) or the stop gauge detection block (6).

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