Self-centering run-out detection tool structure of permanent magnet synchronous motor

Abstract

The utility model discloses a permanent magnet synchronous motor self-centering type run-out detection tool structure, which comprises a mandrel, an expansion disc, an expansion sleeve, a nut and a pressing sheet, the mandrel is provided with the expansion disc, the expansion disc is sleeved with the expansion sleeve matched with the conical surface of the expansion disc, the mandrel is further sleeved with the pressing sheet, the mandrel is in threaded connection with the nut acting on the pressing sheet, and the nut is in threaded connection with the expansion disc. The expansion sleeve and the pressing piece are located inside and outside the flange bearing chamber respectively, and the mandrel extends outwards in the radial direction to be provided with a blocking part used for blocking the expansion disc. Through the above mode, the flange run-out detection tool is simple in structure and convenient to operate, workers can perform automatic alignment during flange run-out detection, the error rate is reduced, the measurement is accurate, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a self-centering runout detection tooling structure for a permanent magnet synchronous motor. Background Art

[0002] As one of the important components in the motor, the flange, especially its own runout tolerance, not only affects the assembly of the motor but also indirectly determines the service life of the motor. Currently, manual direct measurement of the runout of the flange stop is mostly used. As shown in the figure, to measure the runout of the flange stop with respect to the bearing chamber, it is necessary to manually align the bearing chamber 01, and then manually measure the runout of the flange stop 02 with respect to the bearing chamber 01. This measurement method is unstable and inefficient. Figure 1 Shown in the figure, to measure the runout of the flange stop with respect to the bearing chamber, it is necessary to manually align the bearing chamber 01, and then manually measure the runout of the flange stop 02 with respect to the bearing chamber 01. This measurement method is unstable and inefficient.

[0003] Based on the above defects and deficiencies, it is necessary to improve the existing technology and design a self-centering runout detection tooling structure for a permanent magnet synchronous motor. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a self-centering runout detection tooling structure for a permanent magnet synchronous motor. Through the tooling structure, manual automatic alignment can be achieved during the flange runout detection, reducing the error rate.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a self-centering runout detection tooling structure for a permanent magnet synchronous motor. This self-centering runout detection tooling structure for a permanent magnet synchronous motor includes a mandrel, a shrink disc, a sleeve, a nut, and a pressing piece. The mandrel is equipped with a shrink disc, and a sleeve that is in conical fit with it is sleeved on the shrink disc. A pressing piece is also sleeved on the mandrel. A nut acting on the pressing piece is threadedly connected to the mandrel. The sleeve and the pressing piece are respectively located inside and outside the flange bearing chamber. A blocking portion for blocking the shrink disc is radially and outwardly extended on the mandrel.

[0006] Preferably, the outer rotating surface of the shrink disc is a conical surface; the outer rotating surface of the sleeve is a cylindrical surface and can fit with the flange bearing chamber. A conical hole that is in conical fit with the conical surface of the shrink disc is provided on the sleeve.

[0007] Preferably, the taper of the conical surface of the shrink disc and the conical hole of the sleeve in cooperation is 5.72°.

[0008] Preferably, an activity space for avoiding the shrink disc is provided at one end of the sleeve close to the inner wall of the flange bearing chamber, and the aperture of the activity space is larger than the aperture of the conical hole.

[0009] Preferably, the outer diameter dimension of the pressing piece is larger than the aperture of the opening on the inner wall of the flange bearing chamber.

[0010] Preferably, central holes are provided at both ends of the mandrel.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] Through the tooling structure, the staff can automatically align during the flange runout detection, reducing the error rate;

[0013] The structure is simple, the operation is convenient, etc., and the measurement is accurate;

[0014] At the same time, there is no need to manually align the flange position, improving the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the motor flange.

[0016] Figure 2 It is a schematic structural diagram of a self-centering runout detection tooling structure for a permanent magnet synchronous motor.

[0017] Figure 3 It is a schematic structural diagram of another perspective of a self-centering runout detection tooling structure for a permanent magnet synchronous motor.

[0018] Figure 4 It is a sectional view of a self-centering runout detection tooling structure for a permanent magnet synchronous motor.

[0019] Figure 5 It is a schematic diagram of the expansion sleeve structure of a self-centering runout detection tooling structure for a permanent magnet synchronous motor.

[0020] Among them, 01, bearing chamber; 02, flange stop; 1, mandrel; 10, blocking part; 11, central hole; 2, expansion disk; 3, expansion sleeve; 31, cylindrical surface; 32, tapered hole; 33, activity space; 4, nut; 5, pressing piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following elaborates on the preferred embodiments of the present utility model in detail with reference to the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0022] Please refer to Figures 2 to 5 , the embodiments of the present utility model include:

[0023] A self-centering runout detection tooling structure for a permanent magnet synchronous motor, the self-centering runout detection tooling structure for a permanent magnet synchronous motor comprises a core shaft 1, an expansion disc 2, an expansion sleeve 3, a nut 4 and a pressure plate 5, the core shaft 1 is provided with an expansion disc 2, the expansion disc 2 is sleeved with an expansion sleeve 3 which matches the conical surface thereof, the core shaft 1 is also sleeved with a pressure plate 5, the core shaft 1 is threadedly connected with a nut 4 which acts on the pressure plate 5, the expansion sleeve 3 and the pressure plate 5 are respectively located inside and outside a flange bearing chamber 01, the outer diameter of the pressure plate 5 is larger than the aperture of an opening on the inner wall of the flange bearing chamber 01, and the core shaft 1 is radially extended outwardly to be provided with a blocking portion 10 for blocking the expansion disc 2.

[0024] The outer rotating surface of the expansion disk 2 is a conical surface; the outer rotating surface of the expansion sleeve 3 is a cylindrical surface 31, which can fit with the flange bearing chamber 01, and the expansion sleeve 3 is provided with a conical hole 32 that matches the conical surface of the expansion disk 2. The taper of the conical surface of the expansion disk 2 and the conical hole of the expansion sleeve 3 is 5.72°.

[0025] An end of the expansion sleeve 3 close to the inner wall of the flange bearing chamber 01 is provided with a movable space 33 for evading the expansion disk 2 , and the aperture of the movable space 33 is larger than the aperture of the tapered hole 32 .

[0026] The core shaft 1 has central holes 11 at both ends.

[0027] When the utility model is a self-centering runout detection tooling structure of a permanent magnet synchronous motor, a tightening disc 2 and an expansion sleeve 3 are sequentially installed on the core shaft 1, the expansion sleeve 3 is placed in the flange bearing chamber 01, the core shaft 1 passes through the flange bearing chamber 01, the clamping plate 5 is sleeved on the outdoor core shaft 1, the nut 4 is screwed onto the core shaft 1, the nut 4 is rotated, and the nut 4 drives the clamping plate 5 to press the flange in the process of walking on the core shaft 1. At the same time, the blocking part 10 of the core shaft 1 drives the tightening disc 2 to move relatively toward the inner direction of the flange bearing chamber 01, the tightening disc 2 cooperates with the conical surface of the expansion sleeve 3, at this time, the expansion sleeve 3 in the flange bearing chamber 01 is opened, and the cylindrical surface 31 of the expansion sleeve 3 is close to the flange bearing chamber 01, which is automatically centered. Then the tooling structure is placed on the runout measuring instrument, and the center holes 11 at both ends of the core shaft 1 are supported with the top point, and the flange stop runout can be rotated to measure.

[0028] The utility model discloses a permanent magnet synchronous motor self-centering runout detection tooling structure. The tooling structure enables workers to automatically align during flange runout detection, thereby reducing the error rate. The utility model has a simple structure, is easy to operate, and can accurately measure. At the same time, there is no need to manually align the flange position, thereby improving the inspection efficiency.

[0029] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A self-centering beat detection fixture structure for a permanent magnet synchronous motor, characterized in that: The invention comprises a core shaft (1), an expansion disk (2), an expansion sleeve (3), a nut (4) and a pressure plate (5); the core shaft (1) is provided with an expansion disk (2); the expansion disk (2) is sleeved with an expansion sleeve (3) which matches the conical surface thereof; the core shaft (1) is also sleeved with a pressure plate (5); the core shaft (1) is threadedly connected with a nut (4) which acts on the pressure plate (5); the expansion sleeve (3) and the pressure plate (5) are respectively located inside and outside the flange bearing chamber (01); the core shaft (1) is provided with a blocking portion (10) which is radially extended outward and is used to block the expansion disk (2).

2. A permanent magnet synchronous motor self-centering runout detection fixture structure according to claim 1, characterized in that: The outer rotating surface of the expansion disk (2) is a conical surface; the outer rotating surface of the expansion sleeve (3) is a cylindrical surface (31) which can fit with the flange bearing chamber (01); the expansion sleeve (3) is provided with a conical hole (32) which matches with the conical surface of the expansion disk (2).

3. A permanent magnet synchronous motor self-centering runout detection fixture structure according to claim 2, characterized in that: The taper of the tapered surface of the expansion disk (2) and the tapered hole of the expansion sleeve (3) is 5.72°.

4. The self-centering beat detection fixture structure of a permanent magnet synchronous motor according to claim 2, characterized in that: An activity space (33) for evading the expansion disk (2) is provided at one end of the expansion sleeve (3) close to the inner wall of the flange bearing chamber (01), and the aperture of the activity space (33) is larger than the aperture of the tapered hole (32).

5. The self-centering beat detection fixture structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The outer diameter of the pressing plate (5) is larger than the diameter of the opening on the inner wall of the flange bearing chamber (01).

6. The self-centering beat detection fixture structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The core shaft (1) has central holes (11) at both ends.

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