A measuring device for a planetary carrier of a speed reducer
By designing a measuring device with an adjustable fixed plate and a servo motor-driven adjustment disk, the problems of low efficiency and low accuracy in planetary carrier inspection were solved. This enabled the synchronous inspection of the outer circle, inner hole, and end face of the planetary carrier, improving the stability and adaptability of the measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI XIYU PRECISION MASCH TECH CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-08-04
AI Technical Summary
Existing technologies suffer from low efficiency in planetary carrier inspection and unstable measurement data, making it impossible to comprehensively inspect the roundness, coaxiality, and end-face parallelism of planetary holes, which makes it difficult to meet the high precision and high stability requirements of planetary reducers.
A measuring device including an adjustable fixing plate, a servo motor-driven adjustment disk, and multiple dial indicators is designed. The distance between the dial indicators is automatically adjusted by the motor drive to achieve synchronous detection of the outer circle, inner hole, and end face of the planetary carrier. The threaded shaft and tight sleeve structure are used to achieve quick clamping and stable fixation.
It improves the stability and accuracy of planetary carrier measurement, adapts to the measurement of planetary carriers of different specifications, reduces manual adjustment errors, and enables comprehensive testing.
Smart Images

Figure CN224593857U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of measuring devices for planetary carriers of speed reducers, specifically a measuring device for planetary carriers of speed reducers. Background Technology
[0002] Planetary gear reducers are commonly used transmission devices and are widely applied in fields such as robotics, machine tools, aerospace, and automated production equipment. The machining accuracy of the planetary carrier, one of its core components, directly affects the overall performance of the gear reducer.
[0003] In existing technologies, the inspection of planetary carriers mostly relies on single-point measurement or manual measuring tools, which suffers from low inspection efficiency, unstable measurement data, and poor repeatability. Furthermore, some inspection devices can only acquire the runout of the outer circle or end face of the planetary carrier during the measurement process, failing to comprehensively inspect the roundness of the planetary bores, the coaxiality of the planetary carrier, and the parallelism of the end faces, making it difficult to meet the high precision and high stability requirements of planetary reducers.
[0004] Therefore, it is necessary to design a measuring device for the planetary carrier of the speed reducer to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a measuring device for a planetary carrier of a speed reducer, which solves the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a measuring device for a planetary carrier of a speed reducer, comprising a mounting plate, two symmetrical vertical plates slidably disposed on the top of the mounting plate, and a fixing plate fixedly connected to the top of each of the two vertical plates; a vertical plate fixedly connected to the top of the mounting plate; a first servo motor fixedly connected to one side of the vertical plate; a first rotating shaft fixedly connected to the output shaft of the first servo motor; an adjusting disc fixedly connected to one end of the first rotating shaft; and three circumferentially distributed adjusting arc-shaped openings on the outer surface of the adjusting disc, with the temporal portions of the three adjusting arc-shaped openings slidably inserted. The device includes a plug-in post. Three square sliding openings are circumferentially distributed on the outer surface of one of the fixed plates. An L-shaped bracket is fixed to one end of each of the three plug-in posts, and a dial indicator is fixed to one end of each of the three L-shaped brackets. A limiting piece is fixed to the other end of each of the three plug-in posts. A third motor is fixed to one side of the other fixed plate. A threaded shaft is fixed to the output shaft of the third motor. A fitting piece is fixedly sleeved to one end of the threaded shaft, and a threaded tight sleeve is threaded to the other end of the threaded shaft. A fixed box is fixed to the top of the fixed plate, and another dial indicator is slidably mounted on the top of the fixed box.
[0007] Preferably, the top of the mounting plate has a groove, a second servo motor is fixedly connected to one side of the mounting plate, a second screw is fixedly connected to the output shaft of the second servo motor, and a second threaded sleeve is threaded to both ends of the second screw, and the two vertical plates are respectively fixed to the top of the two second threaded sleeves.
[0008] Preferably, the bottom of both vertical plates is in contact with the top of the mounting plate, and both second threaded sleeves are slidably disposed inside the groove, with the two sides of the two second threaded sleeves respectively in contact with the two sides of the groove.
[0009] Preferably, the top of the fixing box is provided with a sliding groove, and a first screw is rotatably inserted into the sliding groove. A first threaded sleeve is threaded onto the outer surface of the first screw. The bottom of a dial indicator is fixed to the top of the first threaded sleeve. One end of the first screw extends through the outside of the fixing box, and a knob is fixed to the end of the first screw outside the fixing box.
[0010] Preferably, one end of each of the three insertion pins is slidably inserted into the interior of a corresponding square sliding opening and an adjusting arc-shaped opening, and one side of each of the three limiting pieces is in contact with one side of the adjusting plate, and one side of each of the three L-shaped frames is in contact with one side of a fixing plate.
[0011] Preferably, the threaded shaft and the threaded sleeve are rotatably disposed between the axes of the two fixed plates, and mounting holes are provided at the four corners of the mounting plate.
[0012] The technical solution provided by this utility model has the following advantages compared with the prior art:
[0013] This invention, through the inclusion of an adjustable fixing plate, a servo motor-driven adjustment disc, and multiple dial indicator probes, enables simultaneous detection of the outer diameter, inner bore, and end face of a planetary carrier. The device automatically adjusts the dial indicator spacing via motor drive, adapting to the measurement of planetary carriers of different specifications and avoiding errors caused by repeated manual adjustments. Simultaneously, the use of a threaded shaft and tight-fitting structure allows for rapid clamping and stable positioning of the planetary carrier, improving the stability of the measurement process. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is an exploded view of the adjusting disc structure of this utility model;
[0016] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;
[0017] In the diagram: 1. Mounting plate; 2. Vertical plate; 3. Fixing plate; 4. Fixing box; 5. First threaded sleeve; 6. Dial indicator; 7. First screw; 8. Knob; 9. Vertical plate; 10. First servo motor; 11. First rotating shaft; 12. Adjusting disc; 13. Limiting piece; 14. Adjusting arc-shaped opening; 15. Insertion post; 16. Square sliding mouth; 17. L-shaped frame; 18. Second servo motor; 19. Second threaded sleeve; 20. Second screw; 21. Third motor; 22. Threaded shaft; 23. Fitting piece; 24. Threaded tight sleeve. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0019] Obviously, many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Please see Figure 1-3This utility model provides a measuring device for a planetary carrier of a speed reducer, including a mounting plate 1. Two symmetrical vertical plates 2 are slidably disposed on the top of the mounting plate 1, and a fixing plate 3 is fixedly connected to the top of each of the two vertical plates 2. A vertical plate 9 is fixedly connected to the top of the mounting plate 1. A first servo motor 10 is fixedly connected to one side of the vertical plate 9. A first rotating shaft 11 is fixedly connected to the output shaft of the first servo motor 10. An adjusting disk 12 is fixedly connected to one end of the first rotating shaft 11. Three circumferentially distributed adjusting arcs are formed on the outer surface of the adjusting disk 12. The three adjustable arc-shaped openings 14 are slidably connected to the temporal portion of each of the three openings 14. Three square sliding openings 16 are circumferentially distributed on the outer surface of one of the fixed plates 3. One end of each of the three openings 15 is fixedly connected to an L-shaped bracket 17, and one end of each of the three L-shaped brackets 17 is fixedly connected to a dial indicator 6. The other end of each of the three openings 15 is fixedly connected to a limiting piece 13. A third motor 21 is fixedly connected to one side of another fixed plate 3. The output shaft of the third motor 21 is fixedly connected to a threaded shaft 22. A fitting piece 23 is fixedly sleeved at one end of the shaft 22, and a threaded sleeve 24 is threadedly sleeved at the other end of the threaded shaft 22. A fixing box 4 is fixedly connected to the top of the fixing plate 3, and another dial indicator 6 is slidably mounted on the top of the fixing box 4. The planetary carrier is threaded onto the outer surface of the threaded shaft 22 through the fitting piece 23 and the threaded sleeve 24, and is locked in place. The distance between the two fixing plates 3 is adjusted by sliding the two fixing plates 3. The distance between the three plates is adjusted by turning on the first servo motor 10 and rotating the adjusting plate 12. The sliding position between the L-shaped carriers 17 is adjusted to regulate the spacing between the three dial indicators 6, so that the probes of the three dial indicators 6 are in contact with the outer surface of the planetary carrier. Then, by sliding and adjusting another dial indicator 6 on another fixed plate 3, it is brought into contact with the inner wall of the planetary carrier. After that, the planetary carrier is rotated by turning on the third motor 21, so that the four dial indicators 6 can collect data to detect the parallelism of the end face and the roundness of the planetary carrier when it rotates, thereby measuring the operational stability of the planetary carrier.
[0021] To facilitate adjustment of the distance between the two fixed plates 3, and to use three dial indicators 6 to measure the roundness of the planetary carrier operation, a groove is provided on the top of the mounting plate 1. A second servo motor 18 is fixedly connected to one side of the mounting plate 1. A second screw 20 is fixedly connected to the output shaft of the second servo motor 18. Both ends of the second screw 20 are threaded with second threaded sleeves 19, and the two vertical plates 2 are respectively fixed to the top of the two second threaded sleeves 19.
[0022] To facilitate and improve the sliding stability of the two fixed plates 3, the bottom of the two vertical plates 2 are in contact with the top of the mounting plate 1, and the two second threaded sleeves 19 are slidably disposed inside the groove, with the two sides of the two second threaded sleeves 19 respectively in contact with the two sides of the groove.
[0023] In order to adjust the sliding position of a dial indicator 6 to measure the parallelism of the end face of the planetary carrier during use, a sliding groove is provided on the top of the fixed box 4, and a first screw 7 is rotatably inserted into the inside of the sliding groove. A first threaded sleeve 5 is threaded onto the outer surface of the first screw 7. The bottom of the dial indicator 6 is fixed to the top of the first threaded sleeve 5, and one end of the first screw 7 extends through the outside of the fixed box 4. A knob 8 is fixed to the end of the first screw 7 outside the fixed box 4.
[0024] In order to use the rotation of the adjusting plate 12 to stabilize the sliding position of the three first screws 7 on one side of a fixed plate 3, one end of each of the three plug-in pins 15 is slidably inserted into the interior of a corresponding square sliding port 16 and an adjusting arc-shaped port 14, and one side of each of the three limiting plates 13 is in contact with one side of the adjusting plate 12, and one side of each of the three L-shaped brackets 17 is in contact with one side of a fixed plate 3.
[0025] To facilitate the measurement of the planetary carrier and ensure stable installation of the device, the threaded shaft 22 and the threaded sleeve 24 are rotatably mounted between the axes of the two fixed plates 3, and mounting holes are provided at the four corners of the mounting plate 1.
[0026] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.
[0027] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
[0028] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A measuring device for a planetary gear carrier of a speed reducer, comprising a mounting plate (1), characterized in that: The top of the mounting plate (1) is slidably provided with two symmetrical vertical plates (2), and the top of each of the two vertical plates (2) is fixedly connected with a fixing plate (3). The top of the mounting plate (1) is fixedly connected with a vertical plate (9), and a first servo motor (10) is fixedly connected to one side of the vertical plate (9). The output shaft of the first servo motor (10) is fixedly connected to a first rotating shaft (11), and an adjusting disk (12) is fixedly connected to one end of the first rotating shaft (11). The outer surface of the adjusting disk (12) is provided with three circumferentially distributed adjusting arc-shaped openings (14), and the temporal part of each of the three adjusting arc-shaped openings (14) is slidably inserted with a plug post (15). The outer surface of one of the fixing plates (3) is provided with three circumferentially distributed square openings. The sliding opening (16) has an L-shaped bracket (17) fixed to one end of each of the three plug-in pins (15), and a dial indicator (6) fixed to one end of each of the three L-shaped brackets (17). A limit piece (13) is fixed to the other end of each of the three plug-in pins (15). A third motor (21) is fixed to one side of another fixed plate (3). A threaded shaft (22) is fixed to the output shaft of the third motor (21). A fitting piece (23) is fixedly sleeved to one end of the threaded shaft (22). A threaded tight sleeve (24) is threadedly sleeved to one end of the threaded shaft (22). A fixed box (4) is fixed to the top of the fixed plate (3). Another dial indicator (6) is slidably arranged on the top of the fixed box (4).
2. The measuring device for a planetary gear carrier of a speed reducer according to claim 1, characterized in that: The top of the mounting plate (1) is provided with a groove. A second servo motor (18) is fixedly connected to one side of the mounting plate (1). A second screw (20) is fixedly connected to the output shaft of the second servo motor (18). Both ends of the second screw (20) are threaded with second threaded sleeves (19). The two vertical plates (2) are respectively fixed to the top of the two second threaded sleeves (19).
3. The measuring device for a planetary gear carrier of a speed reducer according to claim 2, characterized in that: The bottoms of the two vertical plates (2) are in contact with the top of the mounting plate (1), and the two second threaded sleeves (19) are slidably disposed inside the groove, and the two sides of the two second threaded sleeves (19) are respectively in contact with the two sides of the groove.
4. The measuring device for a planetary carrier of a speed reducer according to claim 1, characterized in that: The top of the fixed box (4) is provided with a sliding groove, and a first screw (7) is rotatably inserted into the inside of the sliding groove. A first threaded sleeve (5) is threaded onto the outer surface of the first screw (7). The bottom of a dial indicator (6) is fixed to the top of the first threaded sleeve (5). One end of the first screw (7) passes through the outside of the fixed box (4), and a knob (8) is fixed to one end of the first screw (7) outside the fixed box (4).
5. The measuring device for a planetary carrier of a speed reducer according to claim 1, characterized in that: One end of each of the three plug-in pins (15) is slidably inserted into the interior of a corresponding square sliding opening (16) and an adjusting arc opening (14), and one side of each of the three limiting pieces (13) is in contact with one side of the adjusting plate (12), and one side of each of the three L-shaped brackets (17) is in contact with one side of a fixing plate (3).
6. The measuring device for a planetary gear carrier of a speed reducer according to claim 1, characterized in that: The threaded shaft (22) and the threaded sleeve (24) are rotatably mounted between the axes of the two fixed plates (3), and mounting holes are provided at the four corners of the mounting plate (1).