Device for measuring outer diameter of rotor coil of alternating current motor

Abstract

The utility model provides an AC motor rotor coil external diameter measuring device comprising a main support; the coil supporting part is connected with the main bracket; one end of the measuring block is in contact with the circumferential surface of the measured coil; the auxiliary support is located above the coil supporting component and connected with the main support, the measuring block is further movably matched with the auxiliary support, a first through hole is further formed in the auxiliary support, and the other end of the measuring block is in clearance fit with the first through hole; the mounting plate is connected with the main support, a second through hole is formed in the mounting plate, and the first through hole is communicated with the second through hole; the numerical value displayer comprises a displayer body and a measuring head, the displayer body is installed on the installation plate, and the measuring head is inserted into the second through hole and matched with the axial end of the measuring block. According to the utility model, the external diameter of the AC motor rotor coil can be accurately measured, the operation is simple, and the measurement error is small.

Description

Technical Field

[0001] This utility model relates to the field of AC motor testing tooling technology, specifically to an AC motor rotor coil outer diameter measuring device. Background Technology

[0002] After the rotor coil of an AC motor is wound, it is necessary to ensure that the maximum outer diameter of the rotor coil is consistent with the designed outer diameter. If the maximum outer diameter of the coil exceeds the designed maximum outer diameter by too much, the rotor coil will contact the claw poles during assembly, causing the motor to fail to generate electricity. In severe cases, it may even burn out the motor. Currently, the maximum outer diameter of the rotor coil can only be roughly measured using vernier calipers, and it cannot be guaranteed that the measurement position is exactly at the maximum outer diameter of the rotor coil. This measurement method has a large error and affects the quality of the motor. Summary of the Invention

[0003] To address the above problems, this utility model provides a device for measuring the outer diameter of an AC motor rotor coil.

[0004] The technical solutions to the above technical problems are as follows:

[0005] An AC motor rotor coil outer diameter measuring device includes a main support;

[0006] Furthermore, it also includes:

[0007] Coil support component, which is connected to the main bracket;

[0008] The measuring block has one end in contact with the circumferential surface of the coil being measured.

[0009] The auxiliary support is located above the coil support component and is connected to the main support. The measuring block is also movablely fitted with the auxiliary support. The auxiliary support is also provided with a first through hole, and the other end of the measuring block is fitted with the first through hole with a clearance.

[0010] Mounting plate, which is connected to the main bracket, has a second through hole and the first through hole is connected to the second through hole;

[0011] The numerical display includes a display body and a probe. The display body is mounted on a mounting plate, and the probe is inserted into a second through hole and mates with the axial end of the measuring block.

[0012] Furthermore, the main support is provided with a first groove and a second groove, the first groove is provided with a threaded hole, the coil support component is threadedly engaged with the threaded hole, and the sub-support is located in the second groove.

[0013] Furthermore, the sub-support includes a bottom and a waist, a first through hole is provided on the bottom, the bottom is connected to the main support by bolts, and a third groove is provided on the waist.

[0014] Furthermore, the measuring block includes a rod and a measuring head. The rod is clearance-fitted with the first through hole and the second through hole. The axial end of the rod is fitted with the probe of the numerical display. The axial end of the measuring head is in contact with the circumferential surface of the coil being measured. The measuring head is also slidably fitted with the third groove.

[0015] Furthermore, the measuring head is also equipped with a lever.

[0016] The beneficial effects of this invention are as follows: This invention measures the maximum outer diameter of the rotor coil by having a measuring block contact the circumferential surface of the rotor coil and displaying the changes in value in real time. This allows for measurement of the maximum outer diameter of the rotor coil, enabling the determination of whether the rotor coil will contact the claw poles during assembly. This invention offers high measurement accuracy and low error, preventing the problem of the motor failing to generate electricity due to excessively large rotor coil outer diameter contacting the claw poles, thus improving the quality of the alternator. Attached Figure Description

[0017] Figure 1 This is a perspective view of the AC motor rotor coil outer diameter measuring device and the coil being measured according to this utility model;

[0018] Figure 2 This is a cross-sectional view of the AC motor rotor coil outer diameter measuring device of this utility model;

[0019] Figure 3 This is a perspective view of the main support of the AC motor rotor coil outer diameter measuring device of this utility model;

[0020] Figure 4 A perspective view of the numerical display of the AC motor rotor coil outer diameter measuring device of this utility model;

[0021] Figure 5 This is a perspective view of the measuring block of the AC motor rotor coil outer diameter measuring device of this utility model;

[0022] Figure 6 This is a perspective view of the auxiliary support of the AC motor rotor coil outer diameter measuring device of this utility model.

[0023] The markings in the attached diagram are as follows: main bracket 1, first groove 1-1, second groove 1-2, threaded hole 1-3, coil support component 2, measuring block 3, rod 3-1, measuring head 3-2, lever 3-2a, secondary bracket 4, first through hole 4-1, bottom 4a, waist 4b, third groove 4c, mounting plate 5, second through hole 5-1, numerical display 6, display body 6-1, probe 6-2, base plate 10, standard part A, and coil under test B. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 6 As shown, an AC motor rotor coil outer diameter measuring device includes a main support 1, and further includes:

[0026] Coil support component 2 is connected to the main bracket 1;

[0027] Measuring block 3, one end of which is in contact with the circumferential surface of the coil being measured;

[0028] The auxiliary support 4 is located above the coil support component 2 and is connected to the main support 1. The measuring block 3 is also movablely engaged with the auxiliary support 4. The auxiliary support 4 is also provided with a first through hole 4-1, and the other end of the measuring block 3 is in clearance engagement with the first through hole 4-1.

[0029] Mounting plate 5 is connected to main bracket 1. Mounting plate 5 is provided with second through hole 5-1 and first through hole 4-1 is connected to second through hole 5-1.

[0030] The numerical display 6 includes a display body 6-1 and a probe 6-2. The display body 6-1 is mounted on the mounting plate 5, and the probe 6-2 is inserted into the second through hole 5-1 and engages with the axial end of the measuring block 3.

[0031] In this embodiment, the first through hole 4-1 and the second through hole 5-1 are concentric. The first through hole 4-1 and the second through hole 5-1 restrict the measuring block 3 from moving radially when it moves up and down, so that the measuring block 3 always maintains vertical movement. In this embodiment, the numerical display 6 is preferably a dial indicator. When measuring the outer diameter of the rotor coil, as the measuring block 3 contacts the probe 6-2 of the numerical display 6, the value on the display body 6-1 changes accordingly. The mounting plate 5 is connected to the main bracket 1 by several bolts.

[0032] The main support 1 is provided with a first groove 1-1 and a second groove 1-2. The first groove 1-1 is provided with a threaded hole 1-3. The coil support component 2 is threadedly engaged with the threaded hole 1-3. The auxiliary support 4 is located in the second groove 1-2.

[0033] In this embodiment, in order to facilitate the replacement of coil support components 2 with different outer diameters to meet the measurement of rotor coils of different sizes, the coil support component 2 and the main bracket 1 are connected by threads. The coil support component 2 is cylindrical. During measurement, the rotor coil to be measured is placed on the coil support component 2 to perform the measurement.

[0034] The sub-support 4 includes a bottom 4a and a waist 4b. A first through hole 4-1 is provided on the bottom 4a. The bottom 4a is connected to the main support 1 by bolts. A third groove 4c is provided on the waist 4b.

[0035] The measuring block 3 includes a rod 3-1 and a measuring head 3-2. The rod 3-1 is clearance-fitted with the first through hole 4-1 and the second through hole 5-1. The axial end of the rod 3-1 is fitted with the probe 6-2 of the numerical display 6. The axial end of the measuring head 3-2 is in contact with the circumferential surface of the coil being measured. The measuring head 3-2 is also slidably fitted with the third groove 4c.

[0036] In this embodiment, during the measurement process, the measuring block 3 will move up and down. In order to prevent the measuring block 3 from deviating during the measurement process, a third groove 4c is provided on the sub-support 4 to guide the measuring block 3.

[0037] The measuring head 3-2 is also equipped with a lever 3-2a.

[0038] The measurement process of this utility model is as follows: First, select a coil support component 2 suitable for the inner diameter of the coil B being measured, and install the coil support component 2 on the main bracket 1 through the threaded hole 1-3. Then, select a standard part A with the same designed outer diameter as the coil B being measured and install it on the coil support component 2. Then, zero the numerical display 6. Next, rotate the standard part A and observe whether the value on the numerical display 6 changes. If there is no change, it means that the outer diameter of the currently selected standard part A is consistent with the outer diameter of the coil B being measured. Then, remove the standard part A and reinstall the coil B being measured on the coil support component 2. Then, hold the lever 3-2a and place the measuring head 3-2 of the measuring block 3 on the outer circumference of the coil B being measured, and rotate the coil B being measured. As the coil B being measured rotates, the rod 3-1 of the measuring block 3 contacts the measuring head 6-2 of the numerical display 6, and the value on the display body 6-1 changes. Record the maximum value displayed on the display body 6-1. Then, use the outer diameter of the standard part A ± the maximum value displayed on the display body 6-1 = the outer diameter of the coil B being measured. Finally, the measurement is completed.

[0039] Finally, it should be noted that the above-described embodiments are merely preferred embodiments of the present invention used to illustrate the technical solutions of the present invention, and are not intended to limit them, much less limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of protection of the claims.

Claims

1. A device for measuring the outer diameter of an AC motor rotor coil, comprising a main support (1), characterized in that, Also includes: Coil support component (2), which is connected to the main support (1); Measuring block (3), one end of measuring block (3) is in contact with the circumferential surface of the coil being measured; The auxiliary support (4) is located above the coil support component (2) and is connected to the main support (1). The measuring block (3) is also in movable cooperation with the auxiliary support (4). The auxiliary support (4) is also provided with a first through hole (4-1). The other end of the measuring block (3) is in clearance cooperation with the first through hole (4-1). Mounting plate (5) is connected to main bracket (1). Mounting plate (5) is provided with second through hole (5-1). First through hole (4-1) is connected to second through hole (5-1). The numerical display (6) includes a display body (6-1) and a probe (6-2). The display body (6-1) is mounted on the mounting plate (5), and the probe (6-2) is inserted into the second through hole (5-1) and engages with the axial end of the measuring block (3).

2. The AC motor rotor coil outer diameter measuring device according to claim 1, characterized in that, The main support (1) is provided with a first groove (1-1) and a second groove (1-2). The first groove (1-1) is provided with a threaded hole (1-3). The coil support component (2) is threadedly engaged with the threaded hole (1-3). The secondary support (4) is located in the second groove (1-2).

3. The AC motor rotor coil outer diameter measuring device according to claim 2, characterized in that, The sub-support (4) includes a bottom (4a) and a waist (4b). A first through hole (4-1) is provided on the bottom (4a). The bottom (4a) is connected to the main support (1) by bolts. A third groove (4c) is provided on the waist (4b).

4. The AC motor rotor coil outer diameter measuring device according to claim 3, characterized in that, The measuring block (3) includes a rod (3-1) and a measuring head (3-2). The rod (3-1) is clearance-fitted with the first through hole (4-1) and the second through hole (5-1). The axial end of the rod (3-1) is fitted with the probe (6-2) of the numerical display (6). The axial end of the measuring head (3-2) is in contact with the circumferential surface of the coil being measured. The measuring head (3-2) is also slidably fitted with the third groove (4c).

5. The AC motor rotor coil outer diameter measuring device according to claim 4, characterized in that, The measuring head (3-2) is also equipped with a lever (3-2a).

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