Starting motor stator pole shoe welding angle measuring instrument

Abstract

The utility model discloses a starting motor stator pole shoe welding angle measuring instrument, comprising a stator housing, at least four pole shoes welded on the inner wall of the stator housing, and a measuring assembly; the positioning part penetrates through the measuring assembly and the positioning connecting screw rod, and the positioning connecting screw rod is in threaded fit with the positioning part; the pole shoe clamping block comprises a head part, a middle part and a bottom part, the bottom part is fixedly connected with the positioning component, and the bottom part is further movably connected with the positioning connecting screw rod; clamping grooves are formed in the two radial end faces of the middle part, the pole shoes are located in the clamping grooves, each clamping groove is provided with two clamping shoulders, the axial end faces of the clamping shoulders are trapezoidal, a first interval and a second interval are formed between every two adjacent pole shoes, and the two clamping shoulders are located in the first interval and the second interval respectively. According to the utility model, the welding efficiency of motor stator pole shoe welding is improved, the detection time is saved, and the product quality is improved at the same time.

Description

Technical Field

[0001] This utility model relates to the field of starter motor technology, specifically to a starter motor stator pole shoe welding angle measuring instrument. Background Technology

[0002] The pole shoe is a unique structure of the magnetic poles of electromagnets, permanent magnets, and motors. It is sometimes called the magnetic pole head. It is an indispensable part of electromagnets and permanent magnets. The function of the pole shoe is to obtain a better linear distribution of the magnetic field. It is composed of two magnetic circuits with the same structure. In order to obtain a better linear distribution, the pole shoe is installed on the end face of the magnetic pole.

[0003] In existing technologies, the stator housing and pole shoes are welded inside the stator housing, which is difficult to process and often results in skewed welds and incorrect angles. If the pole shoe welding angle is incorrect, it can cause the stator and rotor of the starter motor to jam, rendering the starter motor unusable. Currently, to check whether the pole shoe welding angle is skewed, the welded stator housing and pole shoes usually need to be sent to a coordinate measuring machine (CMM) laboratory for testing. However, CMM equipment is huge and cannot be placed directly on the production site. Therefore, sending the welded stator housing and pole shoes for testing wastes a lot of time and delays the production schedule. Moreover, this testing method is usually a sampling inspection, which cannot guarantee the consistency of the welding angle, and it is also difficult to ensure the consistency of product quality. Summary of the Invention

[0004] In view of the shortcomings of the prior art, this utility model provides a starting motor stator pole shoe welding angle measuring instrument.

[0005] The technical solutions to the above technical problems are as follows:

[0006] A starting motor stator pole shoe welding angle measuring instrument includes a stator housing, on which at least four pole shoes are welded, and further includes:

[0007] Measurement components;

[0008] A positioning component that passes through the measuring assembly;

[0009] The positioning connecting screw is threadedly engaged with the positioning component.

[0010] The extreme shoe block includes a head, a middle part, and a bottom. The bottom is fixedly connected to the positioning component and is also movably connected to the positioning connecting screw.

[0011] The two radial end faces of the middle part are provided with slots, the pole shoes are located in the slots, the slots have two shoulders, the axial end faces of the shoulders are trapezoidal, there is a first gap and a second gap between two adjacent pole shoes, and the two shoulders are located in the first gap and the second gap respectively.

[0012] Furthermore, including:

[0013] Positioning plate and measuring plate;

[0014] The positioning disc consists of a disc portion and a shaft portion;

[0015] The measuring disc consists of a lower disc and a shaft.

[0016] The axial end of the shaft is provided with a first stepped hole, and the axial end of the shaft body is provided with a second through hole. The first stepped hole and the second through hole are connected.

[0017] The shaft body is fitted onto the shaft through the second through hole;

[0018] The positioning component passes through the first step hole, and one end of the positioning component is connected to the bottom of the pole shoe block, while the other end of the positioning component abuts against the step of the first step hole.

[0019] Furthermore, the positioning component includes;

[0020] The rod section connects to the bottom of the pole shoe block;

[0021] The nut portion abuts against the step of the first stepped hole;

[0022] The positioning component has a through hole, through which the positioning connecting screw passes and is movably connected to the bottom of the pole shoe block.

[0023] Furthermore, the bottom has an axial countersunk hole at its axial end, and the positioning connecting screw is clearance-fitted with the axial countersunk hole.

[0024] Furthermore, the axial end of the measuring disc's shaft is provided with an annular groove and a notch, and the axial end of the stator housing is engaged in the annular groove.

[0025] Furthermore, it also includes: a clip, which is installed in the notch and also mates with the stator housing.

[0026] Furthermore, both the main plate and the lower plate are provided with scale lines, and the scale lines on the main plate match the scale lines on the lower plate.

[0027] Furthermore, a rotating rod is provided radially on the axial part of the measuring disc.

[0028] The beneficial effects of this utility model are as follows: This utility model measures the welding angle of the pole shoes by using positioning components and measuring components. This utility model is small in size and easy to operate. Using this utility model to measure the welding angle of the stator pole shoes of the starter motor is highly efficient. It can be placed directly on the production site without having to send the welded stator shell and pole shoes to the coordinate measuring room for testing, saving a lot of time and improving production efficiency. At the same time, placing it on the production site allows for measurement of each motor stator pole shoe after welding, improving product quality. Attached Figure Description

[0029] Figure 1 This is a perspective view of the stator pole shoe welding angle measuring instrument for the starter motor of this utility model, along with the stator housing and pole shoes;

[0030] Figure 2 This is a front view of the stator pole shoe welding angle measuring instrument for starter motors of this utility model, along with the stator housing and pole shoes.

[0031] Figure 3 This is a perspective view of the pole shoe block of this utility model;

[0032] Figure 4 This is a perspective view of the positioning disc of this utility model;

[0033] Figure 5 This is a perspective view of the measuring disc of this utility model;

[0034] Figure 6 This is a cross-sectional view of the stator pole shoe welding angle measuring instrument of the starter motor of this utility model, as well as the stator housing and pole shoes.

[0035] The markings in the attached diagram are as follows: Stator housing 1, Pole shoe 2, Positioning component 3, Rod 3-1, Nut 3-2, Through hole 3-12, Pole shoe retainer 4, Head 4-1, Middle part 4-2, Slot 4-2a, Shoulder 4-2aa, Bottom 4-3, Axial countersunk hole 4-3a, Positioning disc 10, Disc 10-1, Shaft 10-2, First step hole 10-2a, Measuring disc 11, Lower disc 11-1, Shaft 11-2, Annular groove 11-2b, Notch 11-2c, Second through hole 11-2a, Clamp 20, Positioning connecting screw 30, Rotating rod 40, First scale line 50, Second scale line 60. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] like Figures 1 to 6 As shown, a starting motor stator pole shoe welding angle measuring instrument includes a stator housing 1, on which at least four pole shoes 2 are welded, and further includes:

[0038] Measurement components;

[0039] Positioning component 3 passes through the measuring assembly;

[0040] The positioning connecting screw 30 is threadedly engaged with the positioning component 3.

[0041] The extreme shoe block 4 includes a head 4-1, a middle part 4-2, and a bottom 4-3. The bottom 4-3 is fixedly connected to the positioning component 3 and is also movably connected to the positioning connecting screw 30.

[0042] The two radial end faces of the middle part 4-2 are provided with slots 4-2a, the pole shoe 2 is located in the slots 4-2a, the slots 4-2a have two shoulders 4-2aa, the axial end faces of the shoulders 4-2aa are trapezoidal, there is a first gap and a second gap between two adjacent pole shoes 2, and the two shoulders 4-2aa are located in the first gap and the second gap respectively.

[0043] In this embodiment, before measurement, four pole shoes 2 are first welded to the inner wall of the stator housing 1. Then, positioning and measurement are performed using the positioning component 3 and the measuring assembly. During the measurement process, the pole shoes 2 are engaged in the slots 4-2a of the pole shoe engaging block 4. The width of the slots 4-2a is greater than the width of the pole shoes 2. The pole shoe engaging block 4 is forged to ensure its strength and increase its service life. When the pole shoes 2 are engaged in the slots 4-2a of the pole shoe engaging block 4, the two shoulders 4-2aa of the two slots 4-2a are located within the first and second gaps between the pole shoes 2 (specifically as shown in the figure). Figure 2 (As shown).

[0044] The measuring component includes:

[0045] Positioning plate 10 and measuring plate 11;

[0046] The positioning disk 10 includes a disk portion 10-1 and a shaft portion 10-2;

[0047] The measuring plate 11 includes a lower plate portion 11-1 and a shaft portion 11-2;

[0048] The axial end of the shaft portion 10-2 is provided with a first stepped hole 10-2a, and the axial end of the shaft body portion 11-2 is provided with a second through hole 11-2a. The first stepped hole 10-2a communicates with the second through hole 11-2a.

[0049] Shaft body 11-2 is fitted onto shaft 10-2 through second through hole 11-2a;

[0050] The positioning component 3 passes through the first step hole 10-2a, and one end of the positioning component 3 is connected to the bottom 4-3 of the pole shoe block 4, while the other end of the positioning component 3 abuts against the step of the first step hole 10-2a.

[0051] The positioning component 3 includes;

[0052] Rod 3-1, which is connected to the bottom 4-3 of the pole shoe block 4;

[0053] Nut part 3-2, which abuts against the step of the first stepped hole 10-2a;

[0054] The positioning component 3 is provided with a through hole 3-12. The positioning connecting screw 30 passes through the through hole 3-12 and is movably connected to the bottom 4-3 of the pole shoe block 4.

[0055] The bottom 4-3 has an axial countersunk hole 4-3a at its axial end, and the positioning connecting screw 30 is clearance-fitted with the axial countersunk hole 4-3a.

[0056] The axial end of the shaft portion 11-2 of the measuring disk 11 is provided with an annular groove 11-2b and a notch 11-2c, and the axial end of the stator housing 1 is stuck in the annular groove 11-2b.

[0057] It also includes: a clip 20, which is installed in the notch 11-2c and also mates with the stator housing 1.

[0058] The first scale line 50 is provided on the plate 10-1, and the second scale line 60 is provided on the lower plate 11-1. The first scale line 50 and the second scale line 60 cooperate with each other.

[0059] The measuring disc 11 has a rotating rod 40 in the radial direction of its shaft portion 11-2.

[0060] The working principle of this utility model is as follows: First, four identical pole shoes 2 are welded equidistantly and symmetrically (visually observed) to the inner wall of the stator housing 1. Then, the axial countersunk hole 4-3a on the bottom 4-3 of the pole shoe clamping block 4 is aligned with the positioning connecting screw 30, and the positioning connecting screw 30 is inserted into the axial countersunk hole 4-3a to achieve the positioning of the pole shoe clamping block 4. Next, the measuring disk 11 is rotated by holding the rotating rod 40 so that the second scale line 60 on the lower disk 11-1 coincides with the zero scale line of the first scale line 50 on the disk 10-1 of the positioning disk 10, thereby calibrating the measuring disk 11. After calibration, the stator housing 1 is installed into the annular groove 11-2b at the axial end of the shaft part 11-2 of the measuring disk 11, and the stator housing 1 is clamped with a clip 20 (a notch is provided on the circumferential outer wall of the stator housing 1, and the clip 20 passes through the notch to clamp the stator housing). 1. The clamp 20 is installed in the notch 11-2c at the axial end of the shaft part 11-2 of the measuring disk 11 by bolts to prevent the stator housing 1 from rotating circumferentially. When the stator housing 1 is installed into the annular groove 11-2b at the axial end of the shaft part 11-2 of the measuring disk 11, if the pole shoe 2 successfully engages in the groove 4-2a of the middle part 4-2 of the pole shoe clamping block 4, and the second scale line 60 always coincides with the zero scale line of the first scale line 50, it means that the welding angle of the pole shoe 2 is not skewed. Conversely, if the pole shoe 2 cannot engage in the groove 4-2a of the middle part 4-2 of the pole shoe clamping block 4 when the stator housing 1 is installed into the annular groove 11-2b at the axial end of the shaft part 11-2 of the measuring disk 11, and the second scale line 60 does not coincide with the zero scale line of the first scale line 50, it means that the welding angle of the pole shoe 2 is skewed and rework is required.

[0061] In this embodiment, since four pole shoes 2 need to be welded to the inner wall of the positioning shell 1, the pole shoe clamp 4 needs to be rotated during the inspection, and the above measurement method is repeated to measure the four pole shoes 2 respectively. By recording the amount of offset, it is determined whether the pole shoes 2 are skewed and how to rework and re-weld them.

[0062] 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 starting motor stator pole shoe welding angle measuring instrument, comprising a stator housing (1), wherein at least four pole shoes (2) are welded to the inner wall of the stator housing (1), characterized in that, Also includes: Measurement components; Positioning component (3) passes through the measuring assembly; The positioning connecting screw (30) is threadedly engaged with the positioning component (3); The pole shoe block (4) includes a head (4-1), a middle part (4-2), and a bottom (4-3). The bottom (4-3) is fixedly connected to the positioning component (3) and is also movably connected to the positioning connecting screw (30). The two radial end faces of the middle part (4-2) are provided with slots (4-2a), the pole shoe (2) is located in the slot (4-2a), the slot (4-2a) has two shoulders (4-2aa), the axial end face of the shoulder (4-2aa) is trapezoidal, there is a first gap and a second gap between two adjacent pole shoes (2), and the two shoulders (4-2aa) are located in the first gap and the second gap respectively.

2. The starting motor stator pole shoe welding angle measuring instrument according to claim 1, characterized in that, The measuring component includes: Positioning plate (10) and measuring plate (11); The positioning disk (10) includes a disk portion (10-1) and a shaft portion (10-2). The measuring plate (11) includes a lower plate (11-1) and a shaft (11-2). The axial end of the shaft portion (10-2) is provided with a first stepped hole (10-2a), and the axial end of the shaft body portion (11-2) is provided with a second through hole (11-2a). The first stepped hole (10-2a) and the second through hole (11-2a) are connected. The shaft body (11-2) is fitted onto the shaft body (10-2) through the second through hole (11-2a); The positioning component (3) passes through the first step hole (10-2a), and one end of the positioning component (3) is connected to the bottom (4-3) of the pole shoe block (4), while the other end of the positioning component (3) abuts against the step of the first step hole (10-2a).

3. The starting motor stator pole shoe welding angle measuring instrument according to claim 2, characterized in that, The positioning component (3) includes; The rod (3-1) is connected to the bottom (4-3) of the pole shoe block (4); The nut portion (3-2) abuts against the step of the first stepped hole (10-2a); The positioning component (3) is provided with a through hole (3-12). The positioning connecting screw (30) passes through the through hole (3-12) and is movably connected to the bottom (4-3) of the pole shoe block (4).

4. The starting motor stator pole shoe welding angle measuring instrument according to claim 3, characterized in that, The bottom (4-3) has an axial countersunk hole (4-3a) at its axial end, and the positioning connecting screw (30) is clearance-fitted with the axial countersunk hole (4-3a).

5. A starting motor stator pole shoe welding angle measuring instrument according to claim 2, characterized in that, The axial end of the shaft part (11-2) of the measuring disc (11) is provided with an annular groove (11-2b) and a notch (11-2c), and the axial end of the stator housing (1) is stuck in the annular groove (11-2b).

6. A starting motor stator pole shoe welding angle measuring instrument according to claim 5, characterized in that, Also includes: The clip (20) is installed in the notch (11-2c) and also engages with the stator housing (1).

7. A starting motor stator pole shoe welding angle measuring instrument according to claim 2, characterized in that, The first scale line (50) is provided on the plate (10-1), and the second scale line (60) is provided on the lower plate (11-1). The first scale line (50) and the second scale line (60) cooperate with each other.

8. A starting motor stator pole shoe welding angle measuring instrument according to claim 2, characterized in that, The measuring disc (11) has a rotating rod (40) in the radial direction of the shaft part (11-2).

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