Starting motor stator pole shoe run-out detection device

Abstract

The invention discloses a starting motor stator pole shoe run-out detection device, and belongs to the technical field of rapid detection after starting motor stator processing, the detection device comprises a base and a detection module, the top of the base is provided with a positioning disc and a rotating disc, and the upper end face of the rotating disc is provided with a circular mounting groove; the detection module comprises linear sliding rails, each linear sliding rail is provided with a sliding table and a transmission plate, one end of each transmission plate in the length direction is vertically provided with a measuring rod, and each transmission plate is provided with a measuring device. According to the invention, an expensive three-coordinate measuring machine and a complex clamp design are not needed, the detection cost is greatly reduced, instant detection of stator pole shoe jumping is realized, the tedious process of sending a stator to a detection department in a traditional detection mode is avoided, the detection period is obviously shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rapid detection of a starting motor stator after processing, and in particular relates to a starting motor stator pole shoe beating detection device. Background Art

[0002] In the manufacturing process of the starter motor, the welding of the stator housing and the pole shoe is a critical link. The pole shoe is usually installed inside the stator housing and fixed by welding. This special position makes the welding operation quite complicated and challenging. Due to space limitations and obstructed vision, it is particularly difficult to accurately control the welding quality. Common welding problems include but are not limited to uneven welds, weak welding points, and coaxial deviation between the pole shoe and the stator housing.

[0003] Among them, the non-concentricity or excessive runout between the inner circumference of the pole shoe and the outer circumference of the stator stop is a problem of particular concern. This deviation will directly affect the operating stability and efficiency of the starter motor. Specifically, when the inner circle runout of the pole shoe exceeds the allowable range, it will cause uneven clearance between the rotor and the stator during rotation, resulting in vibration, noise and additional wear. In long-term operation, these problems will not only shorten the service life of the motor, but may also cause serious mechanical failures.

[0004] In order to detect the runout of the inner circle of the pole shoe, the traditional practice is to send the stator to the inspection department equipped with a three-dimensional coordinate measuring machine for precise measurement after welding. The three-dimensional coordinate measuring machine occupies an important position in the field of precision measurement due to its high precision and versatility. However, this detection method has several significant limitations. First, the three-dimensional coordinate measuring machine is large and expensive. It is usually not installed directly on the production line, but exists as an independent detection equipment. This means that the stator needs to be removed from the production line and transported to the inspection department for each inspection, which not only increases the logistics cost, but also prolongs the inspection cycle. Secondly, because the pole shoe is located inside the stator, the three-dimensional coordinate measuring machine faces great difficulties in sampling points, and often needs to design complex fixtures and probe paths, which further increases the detection time and cost.

[0005] Therefore, it is particularly important to develop a device that can quickly and accurately detect the stator pole shoe vibration of the starter motor at the production site. This device can not only improve the detection efficiency and reduce production interruptions, but also effectively reduce the detection cost and improve the overall production efficiency. Summary of the invention

[0006] In view of the above problems in the prior art, the present invention aims to provide a starter motor stator pole shoe vibration detection device, which solves the problem that the existing starter motor stator pole shoe vibration detection technology relies on a three-coordinate measuring machine, resulting in detection difficulties and low efficiency.

[0007] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows: a starter motor stator pole shoe jump detection device is provided, which includes a base and at least one detection module, a positioning plate is arranged on the top of the base, a rotating plate is arranged coaxially on the upper end surface of the positioning plate, and a circular mounting groove for fixing the bottom of the stator housing is arranged on the upper end surface of the rotating plate; a circular channel is arranged in the middle of the positioning plate and the rotating plate;

[0008] The detection module includes at least one linear slide rail arranged on the base, the length direction of each linear slide rail is parallel to the diameter direction of the positioning plate, a slide table is arranged on each linear slide rail, the upper end surface of each slide table is connected to a transmission plate, each transmission plate is arranged along the length direction of the linear slide rail, a measuring rod is vertically arranged at one end in the length direction of each transmission plate, a measuring device is arranged at the other end in the length direction of each transmission plate, and the probe of each measuring device is used to contact the end surface of the other end in the length direction of the transmission plate;

[0009] The top end of each measuring rod passes through the circular channel and is located inside the stator housing. The top end of each measuring rod is provided with a measuring head for tightly contacting the inner wall of the pole shoe inside the stator housing.

[0010] The working principle of the above-mentioned starting motor stator pole shoe vibration detection device is as follows: when in use, firstly, the stator housing after welding the pole shoes is installed and fixed in the circular installation groove, and the measuring head at the top of the measuring rod will be in close contact with the inner wall of the pole shoe inside the stator housing. At the same time, a measuring device is set and the probe of the measuring device is in contact with the other end face of the transmission plate in the length direction. Then, the rotating disk is rotated to drive the pole shoe inside the stator housing to rotate around its own axis. When the pole shoe is out of center or the vibration is too large, the situation of the pole shoe being out of center or the vibration is transmitted to the transmission plate and the measuring device in contact with the transmission plate through the measuring rod. The reading of the measuring device is manually observed and its vibration is confirmed to judge the coaxiality deviation between the pole shoe and the stator housing.

[0011] Furthermore, as a specific cooperation mode between the positioning plate and the rotating plate, the positioning plate has a circular plate structure, the rotating plate has a stepped shaft structure, the bottom of the rotating plate is located inside the positioning plate, and the stepped surface of the rotating plate is rotatably matched with the upper end surface of the positioning plate by setting a tapered roller bearing; a plurality of rotating handles are arranged on the circumferential outer wall of the rotating plate, and the setting of the plurality of rotating handles facilitates the rotation of the rotating plate, thereby realizing the detection of the stator pole shoe runout of the starting motor.

[0012] Furthermore, there are three linear rails, the angle between the three linear rails is 120 degrees, and the heights of the three measuring rods connected to the transmission plates on the three linear rails are all different. A measuring rod with different heights is arranged on each linear rail, and by arranging multiple measuring rods, the internal vibration detection of pole shoes at different heights can be realized.

[0013] Furthermore, the measuring head is rotatably connected to the top of the measuring rod, the measuring head is a circular structure, the circumferential outer wall of the measuring head is in close contact with the inner wall of the pole shoe inside the stator housing, and the measuring head can rotate around the central axis of the measuring rod.

[0014] Further, the measuring device is a dial gauge or a micrometer, and the probe of the dial gauge or the micrometer contacts the other end face of the transmission plate in the length direction. The dial gauge or the micrometer can be flexibly applied according to the detection accuracy.

[0015] Furthermore, as a specific fixing method of the measuring device, a fixing plate is provided at the other end of each transmission plate in the length direction, and a measuring device is fixed on each fixing plate.

[0016] Furthermore, a protective device is provided on the side wall of each fixed plate close to the transmission plate, and the protective device includes an adjusting bolt and a locking nut provided on the adjusting bolt, the tail end of the adjusting bolt is threadedly connected to the side wall of the fixed plate, and the head end of the adjusting bolt is used to contact the other end face of the transmission plate in the length direction. The setting of the protective device can protect the measuring device, and the specific principle is as follows: when the coaxiality deviation of the pole shoe is too large, it will cause excessive displacement of the transmission plate. By adjusting the extension length of the adjusting bolt, when the transmission plate is excessively displaced, the transmission plate will contact the head end of the adjusting bolt, so as to prevent the transmission plate from continuing to resist the probe of the measuring device, thereby protecting the measuring device.

[0017] Furthermore, a spring seat is provided on the upper end surface of the base, and the spring seat is located at the center of the circular channel. Three thrust springs are provided on the spring seat, and each measuring rod is matched with a thrust spring, one end of the thrust spring is fixedly connected to the spring seat, and the other end is fixedly connected to the bottom of the measuring rod. The setting of the thrust spring exerts an outward thrust on the measuring rod, so that the measuring head at the top of each measuring rod is in close contact with the inner wall of the pole shoe inside the stator housing, thereby ensuring the measurement accuracy.

[0018] Furthermore, as a specific fixing method of the thrust spring, the spring seat is a cylindrical structure, and three thrust springs are arranged on the circumferential outer wall of the spring seat, and each thrust spring is a cylindrical spring; the bottom of each measuring rod passes through the transmission plate, and a locking hole for connecting with the circumferential outer wall of the measuring rod is arranged on one side wall of the transmission plate, and a locking screw is arranged in the locking hole, and an installation connection platform is arranged at the bottom of the measuring rod; the other end of the thrust spring is fixedly connected to the bottom of the measuring rod through the installation connection platform.

[0019] Compared with the existing method of using a three-coordinate measuring machine to detect the stator pole shoe vibration of the starter motor, the beneficial effects of the present invention are as follows:

[0020] 1. The stator pole shoe beating detection device of the starter motor in the present invention has a compact design and is easy to install on the production line, realizing the instant detection of the stator pole shoe beating. This avoids the cumbersome process of sending the stator to the inspection department in the traditional inspection method, significantly shortens the inspection cycle, and improves production efficiency.

[0021] 2. Compared with the traditional detection method, the detection device of the stator pole shoe of the starter motor in the present invention does not require expensive three-dimensional measuring machines and complex fixture designs, which greatly reduces the detection cost. At the same time, due to the improvement of detection efficiency, the production loss caused by detection delays is also reduced.

[0022] 3. The stator pole shoe vibration detection device of the starter motor in the present invention is flexible in design and can be customized and adjusted according to different models and specifications of the starter motor stators. This enables it to adapt to diverse production needs and improves the versatility and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a device for detecting the stator pole shoe vibration of a starter motor.

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the stator housing installed on the detection device.

[0025] Figure 3 This is a schematic diagram of the installation structure of the linear guide rail.

[0026] Among them, 1. base; 2. detection module; 21. linear slide rail; 22. slide table; 23. transmission plate; 24. measuring rod; 25. measuring device; 26. measuring head; 3. positioning plate; 4. rotating plate; 5. stator housing; 6. circular mounting groove; 7. circular channel; 8. tapered roller bearing; 9. fixing plate; 10. adjusting bolt; 11. locking nut; 12. spring seat; 13. thrust spring; 14. locking hole; 15. installation connection platform; 16. rotating handle. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0028] like Figure 1 to Figure 3 As shown, the present invention provides a device for detecting stator pole shoe vibration of a starter motor, which includes a base 1 and a detection module 2.

[0029] A positioning plate 3 is arranged on the top of the base 1, and a rotating plate 4 is coaxially rotatably arranged on the upper end surface of the positioning plate 3. Specifically, as a specific cooperation mode between the positioning plate 3 and the rotating plate 4, the positioning plate 3 is a disc structure, and the rotating plate 4 is a stepped shaft structure. The bottom of the rotating plate 4 is located in the positioning plate 3, and the stepped surface of the rotating plate 4 is rotatably matched with the upper end surface of the positioning plate 3 by setting a tapered roller bearing 8; a plurality of rotating handles 16 are arranged on the circumferential outer wall of the rotating plate 4, and the setting of the plurality of rotating handles 16 facilitates the rotation of the rotating plate 4 to realize the detection of the stator pole shoe runout of the starter motor.

[0030] The upper end surface of the rotating disk 4 is provided with a circular mounting groove 6 for fixing the bottom of the stator housing 5. Specifically, the size of the circular mounting groove 6 can be customized and adjusted according to different models and specifications of the starter motor stators, which enables it to adapt to diversified production needs and improves the versatility and practicality of the equipment; the middle of the positioning disk 3 and the rotating disk 4 are both provided with a circular channel 7.

[0031] The detection module 2 includes three linear guide rails 21 arranged on the base 1, and the angle between the three linear guide rails 21 is 120°. The length direction of each linear guide rail 21 is parallel to the diameter direction of the positioning plate 3, and a slide 22 is arranged on each linear guide rail 21. The upper end face of each slide 22 is connected with a transmission plate 23, and each transmission plate 23 is arranged along the length direction of the linear guide rail 21. A measuring rod 24 is vertically arranged at one end of the length direction of each transmission plate 23, and a measuring device 25 is arranged at the other end of the length direction of each transmission plate 23. The measuring device 25 is a micrometer or a dial gauge, and the probe of the micrometer or the dial gauge contacts the end face of the other end of the length direction of the transmission plate 23. The micrometer or the dial gauge can be flexibly applied according to the detection accuracy.

[0032] The probe of each measuring device 25 is used to contact the other end surface of the transmission plate 23 in the length direction. The top end of each measuring rod 24 passes through the circular channel 7 and is located inside the stator housing 5. The top end of each measuring rod 24 is provided with a measuring head 26 for tightly contacting the inner wall of the pole shoe inside the stator housing 5.

[0033] The heights of the three measuring rods 24 connected to the transmission plates 23 on the three linear slides 21 are all different. A measuring rod 24 of different heights is arranged on each linear slide 21. By arranging multiple measuring rods 24, the internal vibration detection of the pole shoes at different heights can be realized.

[0034] Specifically, the measuring head 26 is rotatably connected to the top of the measuring rod 24 . The measuring head 26 has a circular structure. The circumferential outer wall of the measuring head 26 is in close contact with the inner wall of the pole shoe inside the stator housing 5 . The measuring head 26 can rotate around the central axis of the measuring rod 24 .

[0035] As a specific fixing method of the measuring device 25 , a fixing plate 9 is provided at the other end of each transmission plate 23 in the length direction, and a measuring device 25 is fixed on each fixing plate 9 .

[0036] A protective device is provided on the side wall of each fixed plate 9 close to the transmission plate 23, and the protective device includes an adjusting bolt 10 and a locking nut 11 provided on the adjusting bolt 10. The tail end of the adjusting bolt 10 is threadedly connected to the side wall of the fixed plate 9, and the head end of the adjusting bolt 10 is used to contact the other end face of the transmission plate 23 in the length direction. The setting of the protective device can protect the measuring device 25, and the specific principle is as follows: when the coaxiality deviation of the pole shoe is too large, it will cause excessive displacement of the transmission plate 23. By adjusting the extension length of the adjusting bolt 10, when the transmission plate 23 is excessively displaced, the transmission plate 23 will contact the head end of the adjusting bolt 10, so as to prevent the transmission plate 23 from continuing to resist the probe of the measuring device 25, thereby protecting the measuring device 25.

[0037] The upper end surface of the base 1 is also provided with a spring seat 12, which is located at the center of the circular channel 7. Three thrust springs 13 are provided on the spring seat 12, and each measuring rod 24 is matched with a thrust spring 13, one end of the thrust spring 13 is fixedly connected to the spring seat 12, and the other end is fixedly connected to the bottom of the measuring rod 24. The setting of the thrust spring 13 exerts an outward thrust on the measuring rod 24, so that the measuring head 26 at the top of each measuring rod 24 is in close contact with the inner wall of the pole shoe inside the stator housing 5, thereby ensuring the measurement accuracy.

[0038] Specifically, as a specific fixed setting method of the thrust spring 13, the spring seat 12 is a cylindrical structure, and three thrust springs 13 are arranged on the circumferential outer wall of the spring seat 12, and each thrust spring 13 is a cylindrical spring; the bottom of each measuring rod 24 passes through the transmission plate 23, and a locking hole 14 for connecting with the circumferential outer wall of the measuring rod 24 is arranged on one side wall of the transmission plate 23, and a locking screw is arranged in the locking hole 14 to realize the fixed connection between the measuring rod 24 and the transmission plate 23, and an installation connection platform 15 is arranged at the bottom of the measuring rod 24; the other end of the thrust spring 13 is fixedly connected to the bottom of the measuring rod 24 through the installation connection platform 15.

[0039] When detecting the runout of the stator pole shoe of the starter motor, firstly, the stator housing 5 with the pole shoe welded thereon is fixed in the circular mounting groove 6, and the measuring head 26 on the top of the measuring rod 24 is in close contact with the inner wall of the pole shoe inside the stator housing 5. At the same time, a measuring device 25 is provided and the probe of the measuring device 25 is in contact with the other end face of the transmission plate 23 in the length direction. Then, the rotating disk 4 is rotated to drive the pole shoe inside the stator housing 5 to rotate around its own axis. When the pole shoe is not concentric or the runout is too large, the situation of the pole shoe not concentric or the runout is transmitted to the transmission plate 23 and the measuring device 25 in contact with the transmission plate 23 through the measuring rod 24. The reading of the measuring device 25 is manually observed and its runout is confirmed to judge the coaxiality deviation between the pole shoe and the stator housing 5.

[0040] The stator pole shoe runout detection device of the starter motor in the present invention has a compact design and is easy to install on the production line. It does not require an expensive three-dimensional coordinate measuring machine and a complex fixture design, greatly reducing the detection cost and realizing instant detection of the stator pole shoe runout. This avoids the cumbersome process of sending the stator to the detection department in the traditional detection method, significantly shortens the detection cycle, improves production efficiency, and reduces production losses caused by detection delays.

[0041] In summary, the starter motor stator pole shoe jump detection mechanism of the present invention has significant beneficial effects in solving the problems of the existing technology, improving detection efficiency and accuracy, and reducing costs, and is of great significance for improving the overall competitiveness of the starter motor manufacturing industry.

Claims

1. A device for detecting the stator pole shoe vibration of a starter motor, characterized in that: It includes a base and a detection module, the top of the base is provided with a positioning plate, the upper end surface of the positioning plate is provided with a rotating plate coaxially rotatably, the upper end surface of the rotating plate is provided with a circular mounting groove for fixing the bottom of the stator housing; the middle of the positioning plate and the rotating plate are both provided with a circular channel; The detection module comprises at least one linear slide rail arranged on the base, the length direction of each linear slide rail is parallel to the diameter direction of the positioning plate, a slide table is arranged on each linear slide rail, the upper end surface of each slide table is connected to a transmission plate, each transmission plate is arranged along the length direction of the linear slide rail, a measuring rod is vertically arranged at one end of each transmission plate in the length direction, a measuring device is arranged at the other end of each transmission plate in the length direction, and a probe of each measuring device is used to contact the end surface of the other end of the transmission plate in the length direction; The top end of each measuring rod passes through the circular channel and is located inside the stator housing. The top end of each measuring rod is provided with a measuring head for tightly contacting the inner wall of the pole shoe inside the stator housing.

2. The device for detecting stator pole shoe vibration of a starter motor according to claim 1, characterized in that: The positioning disk is in a disc structure, the rotating disk is in a stepped shaft structure, the bottom of the rotating disk is located inside the positioning disk, the stepped surface of the rotating disk is rotatably matched with the upper end surface of the positioning disk by setting a tapered roller bearing; a plurality of rotating handles are set on the circumferential outer wall of the rotating disk.

3. The device for detecting stator pole shoe vibration of a starter motor according to claim 1, characterized in that: The number of the linear slide rails is three, and the angle between the three linear slide rails is 120°.

4. The device for detecting stator pole shoe vibration of a starter motor according to claim 3, characterized in that: The heights of the three measuring rods connected to the transmission plates on the three linear slide rails are all different.

5. The device for detecting stator pole shoe vibration of a starter motor according to claim 1, characterized in that: The measuring head is rotatably connected to the top end of the measuring rod. The measuring head has a circular structure. The outer circumferential wall of the measuring head is in close contact with the inner wall of the pole shoe inside the stator housing. The measuring head can rotate around the central axis of the measuring rod.

6. The device for detecting stator pole shoe vibration of a starter motor according to claim 3, characterized in that: The measuring device is a micrometer or a dial gauge, and the probe of the micrometer or the dial gauge contacts the other end surface of the transmission plate in the length direction.

7. The device for detecting stator pole shoe vibration of a starter motor according to claim 6, characterized in that: A fixing plate is provided at the other end of each transmission plate in the length direction, and one measuring device is fixed on each fixing plate.

8. The device for detecting stator pole shoe vibration of a starter motor according to claim 7, characterized in that: A protective device is provided on the side wall of each fixed plate close to the transmission plate, and the protective device includes an adjusting bolt and a locking nut arranged on the adjusting bolt. The tail end of the adjusting bolt is threadedly connected to the side wall of the fixed plate, and the head end of the adjusting bolt is used to contact the other end face of the transmission plate in the length direction.

9. The device for detecting stator pole shoe vibration of a starter motor according to claim 8, characterized in that: A spring seat is also provided on the upper end surface of the base, and the spring seat is located at the center of the circular channel. Three thrust springs are provided on the spring seat, and each measuring rod is matched with a thrust spring. One end of the thrust spring is fixedly connected to the spring seat, and the other end is fixedly connected to the bottom of the measuring rod.

10. The device for detecting stator pole shoe vibration of a starter motor according to claim 9, characterized in that: The spring seat is of cylindrical structure, and three thrust springs are arranged on the circumferential outer wall of the spring seat, and each thrust spring is a cylindrical spring; the bottom of each measuring rod passes through the transmission plate, and a locking hole for connecting with the circumferential outer wall of the measuring rod is arranged on one side wall of the transmission plate, and a locking screw is arranged in the locking hole, and a mounting and connecting platform is arranged at the bottom of the measuring rod; the other end of the thrust spring is fixedly connected to the bottom of the measuring rod through the mounting and connecting platform.

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