Double iron core press fitting clamp

Abstract

The utility model discloses a double iron core press -mounting clamp belongs to motor manufacturing frock technical field. Washer (1), bottom plate (2), screw (3), positioning key a (4), cushion block (5), positioning sleeve (6), positioning key b (7), pressure head (8). The utility model adds four positioning grooves on positioning sleeve (6), forms the relative angle between positioning groove, and is equipped with corresponding positioning key a (4), positioning key b (7) on positioning groove, so as to guarantee the correct position of iron core. The iron core is separated by cushion block (5), and the support of bushing is strengthened, so as to guarantee the correct position of two iron cores on the motor shaft. The structure not only guarantees that two sections of iron cores are pressed and mounted once, but also guarantees the relative angle of two sections of iron cores.

Description

Technical Field

[0001] This utility model discloses a double-core pressing fixture, which is suitable for rotor structures with double cores and angle requirements between the two cores, and belongs to the tooling of motor manufacturing. Background Technology

[0002] Typically, a stacked rotor consists of a core assembly and a rotor shaft. The core assembly is formed by stacking several iron chips with grooves along their edges. Currently, in most cases, a base and locating pins are used to press-fit the rotor assembly. This motor's rotor core is segmented, and the two segments need to differ by a certain angle. Conventional structures cannot meet the technical requirements. By designing two sets of locating keys, the relative angle of the two cores is ensured, allowing the two core segments to be successfully pressed onto the motor shaft. Summary of the Invention

[0003] The purpose of this utility model is to achieve the requirement of pressing two iron cores on the shaft, and there is a relative angle requirement between the two iron cores.

[0004] The technical solution of this utility model is:

[0005] A double-core pressing fixture includes: a washer 1, a base plate 2, screws 3, locating keys a4, pads 5, locating sleeves 6, locating keys b7, and a pressing head 8. First, the base plate 2 is installed on the washer 1, and then the locating sleeve 6 is installed on the base plate 2. Two locating keys a4 are taken and freely slid into the bottom of the symmetrical locating grooves of the locating sleeve 6. After the two locating keys 4 are installed, a set of core components is placed in, and the screws 3 are tightened to fix the locating keys 4. After the cores are installed, the pads 5 are placed on the locating sleeve 6, and a bushing is pressed between the two sets of cores. The bushing is placed in the middle of the pads 5. The locating keys 7 of the other set are taken and installed into the other set of locating grooves of the locating sleeve 6. The other set of core components is installed in the direction of the keyway.

[0006] The washer 1 and the base plate 2 are clearance-fitted, and the height between the bottom surface of the base plate 2 and the bottom surface of the washer 1 is greater than 30mm.

[0007] The fit between the base plate 2 and the positioning sleeve 4 must be no greater than 0.04 mm to ensure their concentricity.

[0008] The positioning sleeve 6 has four positioning grooves. One set of positioning grooves is symmetrically distributed at 180°, and the other set of positioning grooves is 97.5° different in angle from the previous set.

[0009] The positioning groove on the positioning sleeve 6 is fitted with the positioning key with a clearance.

[0010] The maximum gap between the positioning groove and the positioning key on the positioning sleeve 6 is no greater than 0.03.

[0011] The beneficial effects of this utility model are:

[0012] This utility model mainly addresses the problem of press-fitting a double-core rotor. A press-fitting fixture is designed, with four positioning slots machined on the fixture's positioning sleeve (see figure). Figure 1 The positioning slots form a relative angle, and corresponding positioning keys are fitted onto the positioning slots. Figure 2 To ensure correct core positioning, spacers are used to separate the cores and reinforce the bushing support, ensuring the correct positioning of the two cores on the motor shaft. This structure not only ensures the simultaneous pressing of two core sections but also guarantees the relative angle between them. Pressing two rotor core sections with required relative angles in a single operation avoids repeated pressing that could damage the shaft diameter, reduces interference fit, and thus meets technical requirements while improving production efficiency. Attached Figure Description

[0013] Figure 1 A bottom view of the positioning sleeve 6;

[0014] Figure 2 This is a schematic diagram of the positioning sleeve 6 structure;

[0015] Figure 3 A schematic diagram showing the positioning sleeve 6 placed on the base plate;

[0016] Figure 4 This is a schematic diagram of the structure of this utility model.

[0017] Among them: 1-washer, 2-base plate, 3-screw, 4-locating key, 5-pad, 6-locating sleeve, 7-locating key, 8-pressure head. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] A double-core pressing fixture includes: a washer 1, a base plate 2, screws 3, locating keys a4, pads 5, locating sleeves 6, locating keys b7, and a pressing head 8. First, the base plate 2 is installed on the washer 1, and then the locating sleeve 6 is installed on the base plate 2. Two locating keys a4 are taken and freely slid into the bottom of the symmetrical locating grooves of the locating sleeve 6. After the two locating keys 4 are installed, a set of core components is placed in, and the screws 3 are tightened to fix the locating keys 4. After the cores are installed, the pads 5 are placed on the locating sleeve 6, and a bushing is pressed between the two sets of cores. The bushing is placed in the middle of the pads 5. The locating keys 7 of the other set are taken and installed into the other set of locating grooves of the locating sleeve 6. The other set of core components is installed in the direction of the keyway.

[0020] Washer 1 and base plate 2 are fitted with a clearance fit. The height between the bottom surface of base plate 2 and the bottom surface of washer 1 is greater than 30mm, which ensures that the shaft is not damaged during press-fitting.

[0021] The fit between the base plate 2 and the positioning sleeve 4 must be such that the clearance is no greater than 0.04 mm to ensure their concentricity.

[0022] The positioning sleeve 6 has four positioning slots. One set of positioning slots is symmetrically distributed at 180° to ensure that the parts can be inserted smoothly. The other set of positioning slots is 97.5° different from the previous set to ensure the required angle of the parts.

[0023] The positioning groove on the positioning sleeve 6 is fitted with the positioning key with a clearance.

[0024] The maximum gap between the positioning groove and the positioning key on the positioning sleeve 6 is no more than 0.03. The positioning key is used to mate with the part, and the positioning key can be replaced at any time according to the shape and size of the part.

[0025] The two iron core sections are correctly installed on the fixture. The shaft is placed inside the iron core, and pressure is applied using a press with pressure head 8 to insert the shaft into the double iron core. The fixture is used to ensure the relative angle of the two iron core sections.

[0026] First, according to... Figure 3 As shown, install the base plate 2 on the washer 1, and then install the positioning sleeve 6 on the base plate 2. Take two positioning keys 4 and slide them freely into the positioning slots. After installing the two positioning keys 4, place one of the iron core components and tighten the screws 3 to fix it. After the iron core is installed, place the pad 5 on the positioning sleeve 6. After the pad 5 is in place, take the bushing and place it in the middle of the pad. Then take another set of two positioning keys 7 and install them into the positioning slots. After installing the positioning keys, install the other iron core component in the direction of the keyway. After the iron core is correctly installed, put the shaft into the iron core and use a press with a pressure head 8 to apply pressure to install the shaft into the double iron core. Use a clamp to ensure the relative angle of the two iron core sections.

Claims

1. A double-core press-fit fixture, characterized in that, include: Washer (1), base plate (2), screw (3), positioning key a (4), pad (5), positioning sleeve (6), positioning key b (7), pressure head (8); base plate (2) is installed on washer (1), positioning sleeve (6) is installed on base plate (2); positioning sleeve (6) has four positioning grooves, one set of positioning grooves is symmetrically distributed at 180°, and the other set of positioning grooves is 97.5° different from the previous set; two positioning keys a (4) are freely slid into the bottom of the symmetrical positioning grooves of positioning sleeve (6), and after a set of iron core components is placed, positioning keys a (4) are fixed by screw (3); after the iron core is installed, pad (5) is installed on positioning sleeve (6), a bushing is pressed between the two sets of iron cores and located in the middle of pad (5), and the other set of positioning keys b (7) are respectively installed into the other set of positioning grooves of positioning sleeve (6), and another set of iron core components is installed in the direction of the keyway.

2. The double-core press-fit fixture according to claim 1, characterized in that, The washer (1) and the base plate (2) are fitted with a clearance, and the height between the bottom surface of the base plate (2) and the bottom surface of the washer (1) is greater than 30mm.

3. The double-core press-fit fixture according to claim 1, characterized in that, The fit between the base plate (2) and the positioning sleeve (6) should be such that the fit clearance is no greater than 0.04 to ensure the concentricity of the two.

4. The double-core press-fit fixture according to claim 1, characterized in that, The positioning groove on the positioning sleeve (6) is fitted with the positioning key with a clearance.

5. The double-core press-fit fixture according to claim 1, characterized in that, The maximum gap between the positioning groove and the positioning key on the positioning sleeve (6) is no more than 0.03.

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