Tool for measuring gap of AC motor rotor assembly

Abstract

The utility model discloses a tool used for measuring a gap of an AC motor rotor assembly. The tool comprises a pedestal. A mounting groove is formed in the top end; the supporting frame is arranged at the top end of the base and connected with the base; the fixing block is arranged at the end, away from the base, of the supporting frame and connected with the supporting frame. The fixing block can move up and down on the supporting frame. The dial indicator is mounted on the fixed block; the motor assembly is arranged in the mounting groove, and a rotor at the top end of the motor assembly abuts against the bottom end of the dial indicator. The tool provided by the utility model is simple in structure and convenient to use, and improves the reliability of assembling the AC motor.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology for measuring the clearance of AC motor rotor assemblies, and more particularly to a tooling for measuring the clearance of AC motor rotor assemblies. Background Technology

[0002] Temperature-controlled valves are used in the bleed air systems of Boeing B737 series aircraft. During operation, an AC motor is energized and rotates, its speed reduced by reduction gears, and the output is transmitted through a two-stage worm gear drive, thus opening or closing the valve plate. Inevitably, the motor shaft experiences slight movement along its axial direction during operation, leading to inaccurate measurement during rotor assembly. Utility Model Content

[0003] The purpose of this invention is to provide a tooling for measuring the clearance of AC motor rotor assemblies, thereby solving the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A tooling for measuring the clearance of an AC motor rotor assembly, comprising:

[0006] Base; its top is provided with a mounting slot;

[0007] A support frame is installed at the top of the base and connected to the base;

[0008] A fixing block is located at the end of the support frame away from the base and is connected to the support frame; the fixing block can move up and down on the support frame.

[0009] The dial indicator is mounted on a fixed block.

[0010] The motor assembly is installed in the mounting slot, with the rotor at the top of the motor assembly abutting against the bottom of the dial indicator.

[0011] In some specific embodiments, multiple screw holes are provided along the length of the support frame;

[0012] In some specific embodiments, it also includes: screws;

[0013] Screws are used to secure the fixing block to the screw holes in the support frame.

[0014] In some specific embodiments, the base is square.

[0015] The beneficial effects of this utility model are as follows: This utility model discloses a tooling for measuring the clearance of an AC motor rotor assembly, including a base; a mounting groove is provided at its top end; a support frame is provided at the top end of the base and connected to the base; a fixing block is provided at the end of the support frame away from the base and connected to the support frame; the fixing block can move up and down on the support frame; a dial indicator is mounted on the fixing block; a motor assembly is provided in the mounting groove, and the rotor at the top end of the motor assembly abuts against the bottom end of the dial indicator.

[0016] (1) The device obtains the tooling processing data used in the design by performing rigorous measurement and calculation on the components. The device is used for machining aerospace aluminum alloys.

[0017] (2) During the assembly process, using only a depth gauge or dial indicator will result in inaccurate measurement values. Using this tooling can avoid inaccurate measurement values.

[0018] (3) The tooling has a simple structure and is easy to use, which also improves the reliability of assembling AC motors. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a tooling structure for measuring the clearance of an AC motor rotor assembly according to this utility model;

[0020] Figure 2 This is a diagram showing the gap adjustment of this utility model.

[0021] In the attached diagram, 100 is the base; 110 is the support frame; 120 is the fixing block; 130 is the dial indicator; 140 is the motor assembly; 150 is the screw; and 160 is the rotor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0023] Reference Figure 1 and Figure 2 The tooling shown is for measuring the clearance of an AC motor rotor assembly, comprising:

[0024] Base 100; its top is provided with a mounting slot;

[0025] The support frame 110 is located at the top of the base 100 and is connected to the base 100;

[0026] A fixing block 120 is disposed at the end of the support frame 110 away from the base 100 and is connected to the support frame 110; the fixing block 120 can move up and down on the support frame 110;

[0027] Dial indicator 130 is mounted on fixed block 120;

[0028] The motor assembly 140 is disposed in the mounting slot, and the rotor 160 at the top of the motor assembly 140 abuts against the bottom end of the dial indicator 130.

[0029] In some specific embodiments, a plurality of screw holes are provided along the length of the support frame 110;

[0030] In some specific embodiments, it also includes: screw 150;

[0031] Screw 150 is used to fix the fixing block 120 in the screw hole of the support frame 110.

[0032] In some specific embodiments, the base 100 is square.

[0033] The working principle of this fixture is as follows: Place the motor rotor assembly with the shaft end facing upwards directly on the base 100 of the clearance inspection fixture. Connect the dial indicator 130 to the clearance inspection fixture. Adjust the dial indicator 130 until it contacts the rotor assembly. Set the dial indicator 130 to zero. Pull the rotor assembly up and down. Record the value displayed on the dial indicator 130.

[0034] Example:

[0035] The material is made of aerospace-grade 2A12 aluminum alloy. Due to the stress contact during assembly, its high strength, hardness, wear resistance, and pressure resistance prevent severe deformation under excessive external force during contact. It can well meet the processing dimensional requirements and will not damage the components when mating with them.

[0036] Reference Figure 2 Place the rotor shaft end upwards directly on the base of the clearance inspection fixture. Attach the dial indicator 130 to the clearance inspection fixture. Adjust the dial indicator 130 until it contacts the rotor assembly. Set the dial indicator 130 to zero. Move the rotor assembly up and down. Record the value displayed on the dial indicator 130. The correct end clearance of the rotor assembly is 0.018 to 0.021 inches (0.46 to 0.53 mm).

[0037] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0038] This utility model discloses a tooling for measuring the clearance of an AC motor rotor assembly, including a base with a mounting groove at its top; a support frame 110, which is located at the top of the base and connected to the base; a fixing block 120, which is located at the end of the support frame 110 away from the base and connected to the support frame 110; the fixing block 120 can move up and down on the support frame 110; a dial indicator 130, which is mounted on the fixing block 120; and a motor assembly 140, which is located in the mounting groove, with the rotor 160 at the top of the motor assembly 140 abutting against the bottom end of the dial indicator 130.

[0039] (1) The device obtains the tooling processing data used in the design by performing rigorous measurement and calculation on the components. The device is used for machining aerospace aluminum alloys.

[0040] (2) During the assembly process, using only a depth gauge or dial indicator 130 will result in inaccurate measurement values. Using this tooling can avoid inaccurate measurement values.

[0041] (3) The tooling has a simple structure and is easy to use, which also improves the reliability of assembling AC motors.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tooling for measuring the clearance of an AC motor rotor assembly, characterized in that, include: Base; It has a mounting slot at its top; A support frame is disposed at the top of the base and connected to the base; A fixing block is disposed at one end of the support frame away from the base and connected to the support frame; the fixing block is capable of moving up and down on the support frame. A dial indicator is mounted on the fixed block; A motor assembly is disposed within the mounting slot, with the rotor at the top of the motor assembly abutting against the bottom of the dial indicator.

2. The tooling for measuring the clearance of an AC motor rotor assembly according to claim 1, characterized in that, Multiple screw holes are provided along the length of the support frame.

3. The tooling for measuring the clearance of an AC motor rotor assembly according to claim 2, characterized in that, Also includes: screws; The screws are used to fix the fixing block in the screw holes of the support frame.

4. The tooling for measuring the clearance of an AC motor rotor assembly according to claim 3, characterized in that, The base is square.

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