Measuring device for machining of planetary shafts

Abstract

The utility model provides a kind of measuring device for planetary shaft processing, including fixed mechanism and measuring mechanism, the measuring mechanism is installed on the fixed mechanism. The measuring mechanism includes moving plate, round hole, screw rod, second motor, roughness measuring instrument and measuring probe, the round hole is set up on the moving plate, the utility model is fixed by being placed on jaw chuck with planetary shaft, measuring probe is placed outside planetary shaft, numerical zero, roughness measuring instrument is electrically connected with computer, measurement data is shown by computer, when measuring, first motor drives jaw chuck rotation, drives planetary shaft rotation, measuring probe slides on the surface outside planetary shaft, measurement data is read by roughness measuring instrument, simultaneously, second motor drives screw rod rotation, so that moving plate translation is achieved, drives roughness measuring instrument and measuring probe adjusting position, so different positions on planetary shaft can be measured, without manual operation, simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of planetary shaft measurement technology, specifically a measuring device for planetary shaft machining. Background Technology

[0002] The planetary shaft is the core transmission component of a planetary gear reducer. Mounted on a planetary carrier, it supports the planetary gears. During operation, the power from the servo motor or stepper motor is transmitted to the planetary gears via the sun gear. The planetary gears then rotate and revolve around the planetary shaft, achieving power distribution and torque amplification. Because power is evenly distributed across multiple planetary gears and their corresponding planetary shafts, this structure significantly improves the rigidity and torque capacity of the transmission system while reducing vibration and noise. To ensure long-term reliability, the planetary shaft is typically made of high-strength alloy steel and undergoes heat treatment processes such as carburizing and quenching to obtain a high-hardness, wear-resistant surface. Its compact design allows the planetary gear reducer to achieve a large reduction ratio and torque output while maintaining high-precision transmission. After machining, the planetary shaft requires surface roughness inspection. Surface roughness measurement is a key technology for evaluating the microscopic geometry of a part's surface. The main method is the stylus method, which uses a diamond stylus to slide across the planetary shaft surface, detecting contour undulations and converting them into electrical signals.

[0003] Traditional stylus-type testing requires manual adjustment of the planetary axis position, which is inconvenient and prone to errors, affecting testing accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a measuring device for planetary shaft machining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A measuring device for planetary shaft machining includes a fixing mechanism and a measuring mechanism, wherein the measuring mechanism is mounted on the fixing mechanism.

[0006] The measuring mechanism includes a moving plate, a circular hole, a lead screw, a second motor, a roughness measuring instrument, and a measuring probe. The circular hole is formed on the moving plate, the lead screw is threaded onto the moving plate, the output shaft of the second motor is fixedly connected to the lead screw, the roughness measuring instrument is fixedly connected to one side of the moving plate, the measuring probe is mounted on the roughness measuring instrument, and the roughness measuring instrument is electrically connected to a computer.

[0007] In one embodiment, the fixing mechanism includes a bracket, a jaw chuck, and a first motor. The jaw chuck is rotatably connected to one side of the bracket, and the first motor is bolted to the other side of the bracket. The output shaft of the first motor is fixedly connected to the jaw chuck.

[0008] In one embodiment, two symmetrically arranged guide rods are fixedly connected to one side of the bracket, and a fixed plate is fixedly connected to the other end of the guide rod. One end of the guide rod passes through the movable plate and is slidably connected to the movable plate.

[0009] In one embodiment, the second motor is bolted to the fixed plate, the lead screw is rotatably connected to the fixed plate, and the other end of the lead screw is rotatably connected to the bracket.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention places and fixes the planetary shaft on a jaw chuck, positions the measuring probe on the outside of the planetary shaft with the reading set to zero, and electrically connects the roughness measuring instrument to a computer to display the measurement data. During measurement, a first motor drives the jaw chuck to rotate, which in turn drives the planetary shaft to rotate. The measuring probe slides on the outer surface of the planetary shaft, and the roughness measuring instrument reads the measurement data. Simultaneously, a second motor drives the lead screw to rotate, causing the moving plate to translate and adjusting the position of the roughness measuring instrument and the measuring probe. This allows for measurement of different positions on the planetary shaft without manual operation, making it simple, convenient, and effectively avoiding human error. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model; Figure 2 This is the front view of the present invention.

[0012] In the figure: 11. Bracket; 12. Jaw chuck; 13. First motor; 14. Guide rod; 15. Fixed plate; 21. Moving plate; 22. Circular hole; 23. Lead screw; 24. Second motor; 25. Roughness measuring instrument; 26. Measuring probe. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0014] Please see Figures 1 to 2 This utility model provides a technical solution: A measuring device for planetary shaft machining includes a fixing mechanism and a measuring mechanism. The measuring mechanism is mounted on the fixing mechanism. The fixing mechanism is used to fix the planetary shaft and can also rotate the planetary shaft for easy measurement. The measuring mechanism is used to perform segmented outer diameter roughness detection on the planetary shaft. It is simple and convenient without manual operation.

[0015] The fixing mechanism includes a bracket 11, a jaw chuck 12, and a first motor 13. The jaw chuck 12 is rotatably connected to one side of the bracket 11 and clamps the planetary shaft with three jaws. The first motor 13 is bolted to the other side of the bracket 11 and its output shaft is fixedly connected to the jaw chuck 12. The first motor 13 can drive the jaw chuck 12 to rotate. Two symmetrically arranged guide rods 14 are fixedly connected to one side of the bracket 11. A fixed plate 15 is fixedly connected to the other end of the guide rods 14. One end of the guide rod 14 passes through the moving plate 21 and is slidably connected to the moving plate 21. The guide rod 14 is used to guide the moving plate 21 to move. A second motor 24 is bolted to the fixed plate 15 and a lead screw 23 is rotatably connected to the fixed plate 15. The other end of the lead screw 23 is rotatably connected to the bracket 11. The second motor 24 is used to drive the lead screw 23 to rotate.

[0016] The measuring mechanism includes a moving plate 21, a circular hole 22, a lead screw 23, a second motor 24, a roughness measuring instrument 25, and a measuring probe 26. The circular hole 22 is formed on the moving plate 21. After the planetary shaft is fixed by the jaw chuck 12, its end protrudes through the circular hole 22. The lead screw 23 is threaded onto the moving plate 21. Rotating the lead screw 23 allows the moving plate 21 to translate. The output shaft of the second motor 24 is fixedly connected to the lead screw 23. The roughness measuring instrument 25 is fixedly connected to one side of the moving plate 21. The measuring probe 26 is mounted on the roughness measuring instrument 25. During measurement, the measuring probe 26 is placed outside the planetary shaft. Measurement is performed after the value is zeroed out. The roughness measuring instrument 25 is electrically connected to a computer, and the measurement data is displayed on the computer.

[0017] Both the first motor 13 and the second motor 24 are stepper motors, which can be adjusted according to specific needs.

[0018] The working principle of this utility model is as follows: The planetary shaft is placed on the jaw chuck 12 and fixed. The measuring probe 26 is placed on the outside of the planetary shaft and the value is set to zero. The roughness measuring instrument 25 is electrically connected to the computer, and the measurement data is displayed on the computer. During measurement, the first motor 13 drives the jaw chuck 12 to rotate, which in turn drives the planetary shaft to rotate. The measuring probe 26 slides on the outer surface of the planetary shaft, and the measurement data is read by the roughness measuring instrument 25. At the same time, the second motor 24 drives the lead screw 23 to rotate, which causes the moving plate 21 to translate, thereby adjusting the position of the roughness measuring instrument 25 and the measuring probe 26. Thus, different positions on the planetary shaft can be measured without manual operation, which is simple and convenient.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A measuring device for machining planetary shafts, comprising a fixing mechanism and a measuring mechanism, wherein the measuring mechanism is mounted on the fixing mechanism, characterized in that: The measuring mechanism includes a moving plate (21), a circular hole (22), a lead screw (23), a second motor (24), a roughness measuring instrument (25), and a measuring probe (26). The circular hole (22) is opened on the moving plate (21). The lead screw (23) is threadedly connected to the moving plate (21). The output shaft of the second motor (24) is fixedly connected to the lead screw (23). The roughness measuring instrument (25) is fixedly connected to one side of the moving plate (21). The measuring probe (26) is installed on the roughness measuring instrument (25). The roughness measuring instrument (25) is electrically connected to a computer.

2. The measuring device for machining a planetary shaft according to claim 1, characterized in that: The fixing mechanism includes a bracket (11), a jaw chuck (12) and a first motor (13). The jaw chuck (12) is rotatably connected to one side of the bracket (11), and the first motor (13) is bolted to the other side of the bracket (11). The output shaft of the first motor (13) is fixedly connected to the jaw chuck (12).

3. The measuring device for planetary shaft machining according to claim 2, characterized in that: Two symmetrically arranged guide rods (14) are fixedly connected to one side of the bracket (11), and a fixed plate (15) is fixedly connected to the other end of the guide rod (14). One end of the guide rod (14) passes through the movable plate (21) and is slidably connected to the movable plate (21).

4. The measuring device for planetary shaft machining according to claim 3, characterized in that: The second motor (24) is bolted to the fixed plate (15), the lead screw (23) is rotatably connected to the fixed plate (15), and the other end of the lead screw (23) is rotatably connected to the bracket (11).

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