Flexible high-precision oil seal assembling device

Abstract

The utility model relates to a flexible high-precision oil seal assembling device which comprises a positioning guide disc and a press fitting tool assembly, the positioning guide disc is coaxially, detachably and fixedly connected with the output end of a speed reducer, and the outer circle face of the positioning guide disc forms a positioning guide face; the press fitting tool assembly comprises an upper pressing disc, a lower pressing disc and a plurality of elastic components for achieving connection of the upper pressing disc and the lower pressing disc. The upper end face of the upper pressing disc is an oil seal press-fitting force application acting face, the lower end face of the lower pressing disc is a pressure application acting face making contact with the upper end of an oil seal, and a guide hole is formed in the middle of the lower end of the lower pressing disc. The press-fitting tool assembly is in guide fit with the positioning guide face on the positioning guide disc in the vertical direction through the guide hole, so that the oil seal moves downwards and is press-fitted in an oil seal mounting groove in the outer side of the output end of the speed reducer. According to the oil seal assembling device, flexible press fitting of the oil seal is achieved, accurate alignment installation of the oil seal is guaranteed, and the problem of leakage after the oil seal is installed is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of reducers, relates to a reduction gear assembly technology, and specifically relates to a flexible high-precision oil seal assembly device. Background Art

[0002] In engineering practice, industrial robots are widely used as an important part of the manufacturing industry. As the demand for industrial robot products increases, the requirements are also getting higher and higher. In the development and production of industrial robots, assembly is a key link in the product development process, which is directly related to whether the product can work normally and plays a very important role.

[0003] In industrial robots, the reducer is an important power transmission structure. It requires lubricating oil when running in the robotic arm, and the oil seal is an important component to prevent the leakage of the lubricating oil. The assembly of the oil seal to the robotic arm is crucial. Failure to assemble it correctly will cause leakage of the internal lubricating oil, damage to the reducer and environmental pollution.

[0004] The existing oil seal assembly method is mainly to manually knock the oil seal into the oil seal installation groove between the robot arm housing and the reducer output end by knocking the workpiece or to press the oil seal into the oil seal installation groove by a simple press-fit sleeve. The existing installation method is difficult to achieve accurate installation of the oil seal, and it is difficult to avoid leakage in certain parts of the oil seal. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a flexible high-precision oil seal assembly device which can realize self-correction of deflection during the installation process, thereby realizing accurate alignment installation.

[0006] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0007] A flexible high-precision oil seal assembly device, comprising a positioning guide plate and a press-fitting tooling assembly, wherein the positioning guide plate is coaxially detachably fixedly connected to the output end of the reducer, and the outer cylindrical surface of the positioning guide plate constitutes a positioning guide surface;

[0008] The press-fitting tooling assembly includes an upper pressure plate, a lower pressure plate and a plurality of elastic components for connecting the upper and lower pressure plates; the upper end surface of the upper pressure plate is a pressure application surface for the oil seal press-fitting, the lower end surface of the lower pressure plate is a pressure application surface in contact with the upper end of the oil seal, and a guide hole is provided in the middle of the lower end of the lower pressure plate. The press-fitting tooling assembly forms a guiding cooperation along the up and down directions through the guide hole and the positioning guide surface on the positioning guide plate, so that the oil seal is downwardly pressed into the oil seal mounting groove outside the output end of the reducer.

[0009] Moreover, the positioning guide plate adopts a flange plate with a lower boss in the middle of the lower end; the lower boss of the positioning guide plate forms a positioning fit with the inner hole of the output end of the reducer, and the lower end surface of the flange of the positioning guide plate is in positioning contact with the mounting surface of the output end of the reducer, and connecting screws are installed in the screw through holes on the positioning guide plate and the reserved threads at the output end of the reducer, so that the positioning guide plate can be detachably installed on the output end of the reducer.

[0010] Moreover, the elastic component adopts a compression spring; a compression spring guide column is arranged at the upper end of the lower pressure plate corresponding to the position of each compression spring, and a compression spring mounting hole is arranged at the lower end of the upper pressure plate corresponding to the position of each compression spring; the lower end of the compression spring is mounted on the compression spring guide column, and the upper end of the compression spring is embedded in the corresponding compression spring mounting hole.

[0011] The advantages and positive effects of the utility model are:

[0012] The oil seal assembly device is composed of a positioning guide plate and a press-fitting tooling assembly. The positioning guide plate is detachably connected to the output end of the reducer concentrically to realize the guidance of the press-fitting tooling assembly. The press-fitting tooling assembly is composed of an upper and a lower pressure plate and a plurality of elastic components connected between the two pressure plates. Through the force applied to the upper pressure plate, the entire press-fitting tooling assembly moves downward along the outer cylindrical surface of the positioning guide plate, and downward pressure is applied to the oil seal through the lower end of the lower pressure plate. Under the action of the spring, the lower pressure plate can realize self-correction of inclination, thereby realizing flexible press-fitting of the oil seal, ensuring the precise alignment installation of the oil seal, and avoiding the problem of leakage of the oil seal after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a longitudinal sectional view of the utility model for installing the oil seal;

[0014] Figure 2 It is a schematic diagram of the appearance of the oil seal installation of the utility model. DETAILED DESCRIPTION

[0015] The structure of the utility model is further described below with reference to the accompanying drawings and through embodiments. It should be noted that the embodiments are descriptive rather than restrictive.

[0016] A flexible high-precision oil seal assembly device, see Figure 1-Figure 2 The invention point is: it includes a positioning guide plate 5 and a press-fitting tooling assembly.

[0017] The positioning guide plate is used to achieve the centering and guiding function when the press-fitting tooling assembly is press-fitting the oil seal. The positioning guide plate adopts a flange plate with a lower boss in the middle of the lower end. The lower boss of the positioning guide plate forms a positioning match with the inner hole of the output end of the reducer, and the lower end face of the flange of the positioning guide plate is in positioning contact with the mounting surface of the output end of the reducer. A connecting screw 4 is installed in the screw through hole on the positioning guide plate and the reserved thread at the output end of the reducer, so that the positioning guide plate can be detachably installed on the output end of the reducer. The outer diameter of the positioning guide plate is slightly larger than the inner hole diameter of the oil seal, and the outer cylindrical surface of the positioning guide plate constitutes the positioning guide surface.

[0018] The press-fitting tool assembly includes an upper press plate 8, a lower press plate 6 and a plurality of elastic members for connecting the upper and lower press plates, and the plurality of elastic members are evenly arranged along the circumferential direction. In the present utility model, the elastic member preferably adopts a compression spring 7, and an elastic rubber column or the like can also be adopted. In order to realize the positioning of the compression spring, a compression spring guide column can be arranged at the upper end of the lower press plate corresponding to the position of each compression spring, and a compression spring mounting hole can be arranged at the lower end of the upper press plate corresponding to the position of each compression spring, the lower end of the compression spring is sleeved on the compression spring guide column, and the upper end of the compression spring is embedded in the corresponding compression spring mounting hole. A guide hole is arranged in the middle of the lower end of the lower press plate, and the aperture of the guide hole is slightly larger than the outer diameter of the positioning guide plate, so that the two form a gap guide fit, and the depth of the guide hole is larger than the distance between the upper end face of the oil seal and the upper end face of the positioning guide plate after the oil seal is set to be installed in place, so as to ensure that when the press-fitting tool assembly presses the oil seal downward along the positioning guide plate, the oil seal can be pressed into place. The upper end face of the upper press plate is the force application surface for the oil seal press-fitting. The lower end surface of the lower pressure plate is a pressure-applying surface in contact with the oil seal. To achieve full contact between the lower pressure plate and the oil seal, especially the outer ring portion of the oil seal, the outer diameter of the lower pressure plate is slightly smaller than the outer diameter of the oil seal.

[0019] The process of using this flexible high-precision oil seal assembly device to press-fit the oil seal is as follows:

[0020] 1) Align the oil seal 3 to the upper position of the oil seal installation groove between the robot arm housing 1 and the reducer output end 2;

[0021] 2) Before assembling the oil seal, use the mounting surface of the reducer output end as the positioning surface, install the positioning guide plate, and fix it with hexagon socket screws;

[0022] 3) Use the outer circle of the positioning guide plate as the positioning surface, match the guide through hole of the lower pressure plate of the press-fitting tooling assembly with the positioning surface, press down the press-fitting tooling to install the oil seal in place.

[0023] During the press-fitting process, when the lower pressure plate is deflected, the expansion and contraction amount of the compression spring will change, thereby increasing or decreasing the force acting on the lower pressure plate, so that the lower pressure plate corrects its position and achieves the purpose of flexible installation.

[0024] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A flexible high-precision oil seal assembly device, characterized in that: It includes a positioning guide plate and a press-fitting tooling assembly, wherein the positioning guide plate is coaxially and detachably fixedly connected to the output end of the reducer, and the outer cylindrical surface of the positioning guide plate constitutes a positioning guide surface; The press-fitting tooling assembly includes an upper pressure plate, a lower pressure plate and a plurality of elastic components for connecting the upper and lower pressure plates; the upper end surface of the upper pressure plate is a pressure application surface for the oil seal press-fitting, the lower end surface of the lower pressure plate is a pressure application surface in contact with the upper end of the oil seal, and a guide hole is provided in the middle of the lower end of the lower pressure plate. The press-fitting tooling assembly forms a guiding cooperation along the up and down directions through the guide hole and the positioning guide surface on the positioning guide plate, so that the oil seal is downwardly pressed into the oil seal mounting groove outside the output end of the reducer.

2. The flexible high-precision oil seal assembly device according to claim 1, characterized in that: The positioning guide plate adopts a flange plate with a lower boss in the middle of the lower end; the lower boss of the positioning guide plate forms a positioning fit with the inner hole of the output end of the reducer, and the lower end surface of the flange of the positioning guide plate is in positioning contact with the mounting surface of the output end of the reducer. Connecting screws are installed in the screw through holes on the positioning guide plate and the reserved threads at the output end of the reducer, so that the positioning guide plate can be detachably installed on the output end of the reducer.

3. The flexible high-precision oil seal assembly device according to claim 1, characterized in that: The elastic component adopts a compression spring; a compression spring guide column is set at the upper end of the lower pressure plate corresponding to the position of each compression spring, and a compression spring mounting hole is set at the lower end of the upper pressure plate corresponding to the position of each compression spring; the lower end of the compression spring is mounted on the compression spring guide column, and the upper end of the compression spring is embedded in the corresponding compression spring mounting hole.

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