A reducer auxiliary debugging tool

By designing a reducer auxiliary tooling with a square shell and pad structure, the problems of clamping damage and slippage during debugging were solved, achieving stable and reliable debugging operation and protecting the reducer shell.

CN224488917UActive Publication Date: 2026-07-14JIANGXI ZHONGFA TIANXIN AERO ENGINE TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGXI ZHONGFA TIANXIN AERO ENGINE TECH CO LTD
Filing Date
2025-08-25
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

During the commissioning of existing reducers, repeated clamping, unstable fixing, and impact during disassembly and assembly cause damage to the outer casing, and the reducer is prone to falling off when placed horizontally due to unstable clamping.

Method used

Design an auxiliary tooling with a square shell, which has a cylindrical cavity and a pad. The pad is fixed to the load-bearing part, and the anti-fall flange enhances stability. The impact force is guided to the load-bearing point through the pad. The shell strength is lower than that of the reducer.

Benefits of technology

It avoids damage from direct clamping with vises, provides a stable clamping surface, prevents slippage, protects non-load-bearing parts, reduces impact damage, and improves debugging safety.

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Abstract

The utility model discloses a kind of reducer auxiliary debugging toolings.The tooling aims to solve the problem that reducer shell is damaged or dropped in the debugging process in prior art due to repeatedly being clamped by vice, unstable clamping or disassembly knocking.This tooling is mainly composed of shell, cushion block and screw.It wraps reducer by a shell with square outer contour and circular inner cavity, and the plane on the shell facilitates stable clamping by vice.Cushion block and screw are used to fix reducer in the shell, and the force generated during disassembly is applied to the load-bearing part of reducer.The utility model has simple structure, can effectively avoid damage to reducer during debugging, and improve safety and stability during operation.
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Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools for machining, and in particular to an auxiliary tooling for speed reducer debugging. Background Technology

[0002] Existing speed reducers typically consist of a reducer housing, a driving bevel gear shaft, a driven bevel gear shaft, a reduction gear housing, and an oil pump gear. When commissioning such a reducer, the internal gear shafts must be installed into the reducer housing in sequence. After installing two meshing gear shafts, a vise is used to clamp and fix the reducer housing to measure whether the meshing clearance and meshing area between the gears meet the requirements (e.g., the meshing area should account for more than 60% of the total gear surface area). If the measurement results do not meet the requirements, the newly installed gear shafts need to be removed and corrected by adjusting the spacer sleeves or shims. This process requires removing the reducer housing from the vise. This repeated disassembly, assembly, and measurement results in the reducer housing needing to be repeatedly clamped and released by the vise.

[0003] The following issues were encountered during this debugging process:

[0004] Repeated clamping: When vertically fixing the reducer housing for disassembling and assembling the internal gear shaft, the repeated clamping and loosening operations of the vise can easily damage the surface of the reducer housing. Furthermore, if the vise's clamping force is insufficient, the reducer housing may slip off the vise, potentially causing equipment damage.

[0005] Horizontal Instability: When installing certain components such as reduction gear housings, the reducer housing needs to be clamped horizontally. The reducer housing is usually circular in cross-section. When it comes into contact with the flat clamping surface of the vise, it is difficult to ensure that the clamping position is exactly on the cross-sectional diameter. The contact is unstable, which can easily cause the reducer housing to fall and be damaged during clamping.

[0006] Disassembly and assembly impact damage: When disassembling the internal gear shaft, it is usually necessary to use an aluminum bar and hammer to strike it. The impact force will be transmitted to the reducer housing through the gear shaft. If the non-load-bearing parts of the housing come into direct contact with the worktable surface at this time, it may cause damage to the housing structure. Utility Model Content

[0007] The purpose of this utility model is to provide an auxiliary debugging fixture for speed reducers, so as to solve the problem that speed reducers are easily damaged during debugging due to repeated clamping, unstable fixing and impact during disassembly and assembly.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an auxiliary debugging fixture for a speed reducer, the auxiliary debugging fixture for the speed reducer comprising:

[0009] The outer shell has a square structure and a cylindrical cavity inside. A circular through hole is provided at the bottom of the cavity and is coaxial with the cavity.

[0010] The pads are fixed to the bottom of the cavity by screws, and the distribution points of the pads correspond to the load-bearing parts of the reducer housing.

[0011] In one embodiment, a fall-prevention flange is provided on the outer shell on one side of the top of the cavity.

[0012] In one embodiment, the depth of the cavity is greater than the longitudinal height of the reducer housing.

[0013] In one embodiment, the diameter of the cavity is the same as the diameter of the reducer housing.

[0014] In one embodiment, the housing is made of a high-strength, wear-resistant metal with lower strength than the gearbox housing.

[0015] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages:

[0016] The auxiliary debugging fixture for reducers provided in this embodiment of the invention allows for all debugging operations to be performed by placing the reducer inside a square housing, avoiding direct clamping of the reducer by the vise itself. This effectively prevents scratches or deformation damage to the reducer housing caused by repeated clamping. Furthermore, the square housing structure provides a flat clamping surface, ensuring stable and reliable surface contact with the vise's clamping surface whether clamped vertically or horizontally, solving the problem of unstable clamping and easy drop when the round reducer housing is horizontally placed. In addition, the anti-drop flange structure designed on the housing provides an extra layer of safety for vertical clamping, effectively preventing the fixture and reducer from slipping off the vise due to insufficient clamping force or vibration. Finally, when hammering is required to disassemble or assemble the gear shaft, the impact force will act on the reducer housing. The pads and screws at the bottom of the fixture guide the pressure and impact force to the load-bearing parts of the reducer housing, while the fixture housing itself bears the contact with the tabletop, preventing damage to the non-load-bearing parts of the reducer from stress. In addition, the longitudinal height of the housing is greater than the height of the reducer, which also protects the reducer from impacts. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An exploded view of the auxiliary debugging fixture for the reducer provided in this embodiment of the utility model;

[0019] Figure 2 A cross-sectional view of the outer casing provided for an embodiment of this utility model.

[0020] The labels for the various figures are as follows:

[0021] 1. Outer shell; 2. Spacer; 3. Screw; 11. Cavity; 12. Anti-fall flange. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figures 1 to 2This application provides an auxiliary debugging fixture for a speed reducer, comprising a housing 1, a pad 2, and screws 3. The housing 1 has a square structure, which allows the speed reducer to be stably clamped by a vise during debugging, regardless of whether it needs to be placed vertically or horizontally, providing reliable surface contact and preventing shaking or falling due to unstable contact.

[0027] The housing 1 has a cylindrical cavity 11 inside to accommodate the reducer housing 1. The depth of the cavity 11 is designed to be greater than the longitudinal height of the reducer housing 1, so that during hammering and disassembly operations, the edge of the housing 1 will contact the workbench surface before the reducer, thus effectively protecting the reducer. The diameter of the cavity 11 matches the diameter of the reducer housing 1 being adjusted to ensure that the reducer can be stably placed within it. Specifically, the housing 1 can be made of a high-strength, wear-resistant metal, such as aluminum alloy, but it must be ensured that the strength of the housing 1 is lower than that of the reducer housing.

[0028] At the bottom of cavity 11, several pads 2 are provided. These pads 2 are fixed by screws 3. The distribution of the pads 2 is carefully designed so that they correspond precisely to the load-bearing parts designed on the reducer housing 1. When the gear shaft needs to be disassembled by striking it with tools such as a hammer, the impact force will be transmitted down through the reducer housing 1. At this time, these pads 2 will guide the impact force evenly to the load-bearing points of the reducer, avoiding stress concentration on non-load-bearing weak parts and thus preventing damage.

[0029] To further enhance safety, an anti-fall flange 12 is provided on one side of the top of the cavity 11 of the outer shell 1. When the tooling is vertically clamped by a vise, this flange can rest on the jaws of the vise, acting as a physical limiter. Even if the clamping force of the vise is unexpectedly reduced, it can effectively prevent the entire tooling, along with the internal reducer, from slipping off.

[0030] In use, first fix the pad 2 to the bottom of the cavity 11 of the housing 1 with screws 3. Then place the reducer to be tested into the cavity 11 of the housing 1. Then the entire fixture (including the reducer) can be clamped and fixed in a vise, either vertically or horizontally, as needed for testing. All disassembly, assembly, measurement and testing operations of the reducer are carried out under the protection of this fixture.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A speed reducer auxiliary debugging fixture, characterized in that, The auxiliary debugging fixture for the reducer includes: The outer shell has a square structure and a cylindrical cavity inside. A circular through hole is provided at the bottom of the cavity and is coaxial with the cavity. The pads are fixed to the bottom of the cavity by screws, and the distribution points of the pads correspond to the load-bearing parts of the reducer housing.

2. The auxiliary debugging fixture for a speed reducer according to claim 1, characterized in that: An anti-fall flange is provided on the outer shell on one side of the top of the cavity.

3. The auxiliary debugging fixture for a speed reducer according to claim 1, characterized in that: The depth of the cavity is greater than the longitudinal height of the reducer housing.

4. The auxiliary debugging fixture for a speed reducer according to claim 1, characterized in that: The diameter of the cavity is the same as the diameter of the reducer housing.

5. The auxiliary debugging fixture for a speed reducer according to claim 1, characterized in that: The outer casing is made of a high-strength, wear-resistant metal with a lower strength than that of the reducer casing.