Planetary gear shaft hole position symmetry degree testing fixture

Abstract

The utility model relates to the technical field of planetary gear shafts, and provides a planetary gear shaft hole position symmetry degree testing fixture, which comprises a square frame and a hole position detection rod, the two symmetrical sides and the top of the square frame are respectively provided with a through hole, the square frame is used for placing a planetary gear shaft, and the hole position detection rod is vertically fixed in the middle of the bottom of the inner wall of the square frame. The hole position detection rod is used for detecting the hole position symmetry degree on the planetary gear shaft; the beneficial effects of the utility model reside in that problems that the existing symmetry degree detection equipment is complex in structure and high in cost, the planetary gear shaft needs to be clamped firstly, then the hole site needs to be clamped, and the detection efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear shafts, and relates to a jig for detecting the symmetry of hole positions of a planetary gear shaft. Background Art

[0002] The planetary gear shaft is a key component in the planetary gear system, responsible for supporting the planetary gear and enabling it to rotate around its own axis, while revolving around the central gear along with the planet carrier.

[0003] Hole positions for installing planetary gears are provided on the planetary gear shaft. In combination with this application Figure 2 , after the hole positions are manufactured, it is necessary to detect their symmetry. Currently, the symmetry detection equipment generally includes a positioning device, a translation device, a rotation device, a detection device, and a controller. The structure is complex and the cost is high. It is necessary to first clamp the planetary gear shaft and then clamp the hole positions, resulting in low detection efficiency. Therefore, there is an urgent need for a jig for detecting the symmetry of hole positions of a planetary gear shaft to solve the above problems. Summary of the Utility Model

[0004] In view of the above technical problems existing in the prior art, a jig for detecting the symmetry of hole positions of a planetary gear shaft is provided, which solves the problems that the current symmetry detection equipment has a complex structure and high cost, requires clamping the planetary gear shaft first and then clamping the hole positions, and has low detection efficiency.

[0005] The purpose and efficacy of the utility model are achieved by the following specific technical means:

[0006] A jig for detecting the symmetry of hole positions of a planetary gear shaft, comprising: a square frame and a hole position detection rod. Both symmetric sides and the top of the square frame are provided with through openings. The square frame is used for placing the planetary gear shaft. The hole position detection rod is vertically fixed at the middle of the bottom inner wall of the square frame and is used for detecting the symmetry of the hole positions on the planetary gear shaft.

[0007] Further, the inner width of the square frame is slightly larger than the diameter of the planetary gear shaft, and the length of the hole position detection rod is greater than the depth of the hole position.

[0008] Further, the square frame includes a bottom plate and two side plates. The two side plates are symmetrically distributed and are respectively fixed on both sides of the bottom plate.

[0009] Further, the bottom plate and the two side plates are connected by bolts.

[0010] Further, the bottom plate and the two side plates are both metal plates, and the hole position detection rod is a metal rod.

[0011] Further, the inside of the metal plate is hollow.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] When detecting the symmetry of the hole positions of the planetary gear shaft with this kind of inspection tool, the inner walls on both sides of the square frame can limit the planetary gear shaft, which is beneficial to the stable detection of the planetary gear shaft by this inspection tool. If the hole position detection rod completely passes through the hole position, it indicates that the symmetry of the hole position is 100%, and the planetary gear shaft is qualified; on the contrary, if the hole position detection rod cannot pass through the hole position, it indicates that the planetary gear shaft is unqualified. The detection steps are few and simple, and the whole detection time can be completed within two or three seconds. The detection efficiency is very high and the hole position can be accurately detected. This inspection tool has a simple structure, is easy to manufacture, has a low cost, and has a good market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic perspective view of the overall structure of the present utility model;

[0015] Figure 2 is a schematic perspective view of the planetary gear shaft of the present utility model;

[0016] Figure 3 is a schematic view of the structure when the inspection tool of the present utility model detects the planetary gear shaft;

[0017] Figure 4 is a schematic view of the specific structure of the square frame of the present utility model.

[0018] Reference numerals in the drawings: square frame 1, bottom plate 11, side plate 12, bolt 13, through hole 2, hole position detection rod 3, planetary gear shaft 4, hole position 41. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Please refer to Figures 1-4 , and further describe the embodiments of the present utility model;

[0020] As Figures 1-3 shown, an inspection tool for detecting the symmetry of hole positions of a planetary gear shaft includes: a square frame 1 and a hole position detection rod 3. The two symmetric sides and the top of the square frame 1 are all provided with through holes 2. The square frame 1 is used to place the planetary gear shaft 4. The hole position detection rod 3 is vertically fixed at the middle of the inner wall of the bottom of the square frame 1, and the hole position detection rod 3 is used to detect the symmetry of the hole positions 41 on the planetary gear shaft 4.

[0021] The working principle of this inspection tool is as follows:

[0022] The size of this inspection tool is precisely measured and designed according to the model of the planetary gear shaft 4. The inner wall width of the square frame 1 is slightly larger than the diameter of the planetary gear shaft 4, and the length of the hole position detection rod 3 is greater than the depth of the hole position 41. The openings 2 on both sides of the square frame 1 facilitate the entry of the planetary gear shaft 4 from the opening 2 on either side, and there is no distinction between front and back during inspection, making it more convenient. During inspection, the planetary gear shaft 4 passes through the opening 2 at the top of the square frame 1 and is embedded in the square frame 1. The inner walls on both sides of the square frame 1 can limit the planetary gear shaft 4, which is beneficial for the stable inspection of the planetary gear shaft 4 by this inspection tool, and the planetary gear shaft 4 will enter one of the openings 2 (as Figure 3 shown). During this process, if the hole position detection rod 3 completely passes through the hole position 41, it indicates that the symmetry of the hole position 41 is 100%, and this planetary gear shaft 4 is qualified; otherwise, if the hole position detection rod 3 cannot pass through the hole position 41, it indicates that this planetary gear shaft 4 is unqualified. The inspection steps are few and simple, and the entire inspection time can be completed within two or three seconds. The inspection efficiency is very high and it can accurately detect the hole position 41. This inspection tool has a simple structure, is easy to manufacture, has a low cost, and has a good market prospect.

[0023] Since there are openings 2 on both symmetric sides and the top of the square frame 1, and the hole position detection rod 3 is vertically fixed at the middle of the bottom inner wall of the square frame 1, when inspecting the planetary gear shaft 4, the staff can hold the square frame 1 with one hand and hold the planetary gear shaft 4 with the other hand and move it into the square frame 1, and make the hole position detection rod 3 inserted into the hole position 41

[0024] As Figure 4 shown, the square frame 1 includes a bottom plate 11 and two side plates 12. The two side plates 12 are symmetrically distributed and are respectively fixed on both sides of the bottom plate 11. It has few structures and is simple to manufacture, which is convenient for the factory to process the square frame 1.

[0025] In order to reduce the processing difficulty of the square frame 1, the bottom plate 11 and the two side plates 12 are specifically connected by bolts 13. After using the inspection tool for a long time, the two side plates 12 will show different degrees of wear. The connection method using bolts 13 is convenient for replacing the side plates 12 in the later stage.

[0026] In order to extend the service life of the bottom plate 11, the two side plates 12 and the hole position detection rod 3, the bottom plate 11 and the two side plates 12 are preferably metal plates, such as steel plates, aluminum alloy plates, etc.; the hole position detection rod 3 is preferably a metal rod, such as a steel rod, an aluminum alloy rod, etc. In order to reduce the weight of the inspection tool, the inside of the metal plate is designed to be hollow.

Claims

1. A planetary gear shaft hole position symmetry measuring tool, characterized in that, Comprising: A square frame (1) and a hole position detection rod (3). Both symmetric sides and the top of the square frame (1) are provided with through openings (2). The square frame (1) is used for placing a planetary gear shaft. The hole position detection rod (3) is vertically fixed at the middle of the bottom inner wall of the square frame (1), and the hole position detection rod (3) is used for detecting the symmetry of the hole positions on the planetary gear shaft.

2. The symmetry inspection tool for the hole positions of the planetary gear shaft according to claim 1, wherein: The inner width of the square frame (1) is slightly larger than the diameter of the planetary gear shaft, and the length of the hole position detection rod (3) is greater than the depth of the hole positions.

3. A planetary gear shaft hole position symmetry detector according to claim 1 or 2, characterized in that: The square frame (1) includes a bottom plate (11) and two side plates (12). The two side plates (12) are symmetrically distributed and are respectively fixed on both sides of the bottom plate (11).

4. A planetary gear shaft hole position symmetry detector according to claim 3, characterized in that: The bottom plate (11) and the two side plates (12) are connected by bolts (13).

5. A planetary gear shaft hole position symmetry detector according to claim 3, characterized in that: The bottom plate (11) and the two side plates (12) are both metal plates, and the hole position detection rod (3) is a metal rod.

6. A planet gear shaft hole position symmetry detector according to claim 5, characterized in that: The interior of the metal plate is hollow.

Images