Manipulator Arm Joint Adapter Structure for Modular Torque Transmission
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Solution Overview
Problem
Existing arm joints for manipulators have complex structures that limit variation options and assembly complexity, making them difficult to use effectively.
Innovation Solution
The design incorporates a gear wheel with adaptors at both ends, featuring a female thread for secure and uncomplicated connections to adjacent arm joints or a motor shaft, allowing for relative movements and torque transmission between joints, along with a modular structure for easy assembly and adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex structure is used for the arm joint, then the connection and torque transmission are secure, but the assembly complexity increases and variation options are limited
Solution Approach 1:
The arm joint is divided into modular components: a gear wheel with integrated adaptors at both ends, a housing with receiving portions, and separate transmission elements. This segmentation allows for simplified assembly while maintaining secure connections through standardized interfaces.
Solution Approach 2:
The adaptors serve multiple functions: they provide secure mechanical connection between arm joints, enable torque transmission, allow for motor mounting, and support various transmission element configurations. This multi-functionality reduces the need for separate specialized components.
2Reliability
If a complex structure is used for the arm joint, then the torque transmission is reliable, but the manufacturing and assembly become more difficult
Solution Approach 1:
The adaptor is merged with the gear wheel as an integrated component, eliminating the need for separate mounting operations. The female thread is directly formed on the adaptor, combining multiple functions into a single manufacturable part that simplifies assembly while ensuring reliable torque transmission.
Solution Approach 2:
The adaptors are pre-integrated with the gear wheel during manufacturing, so that during assembly only simple connection operations are needed. The receiving portions in the housing are designed to accommodate various transmission elements in advance, facilitating quick assembly.
3Device complexity
If the structure is simplified, then the assembly is easier, but the variation options for structure and use are reduced
Solution Approach 1:
The arm joint structure is designed to be dynamically configurable through the choice of different transmission elements (spur gears, bevel gears, worm gears) that can be inserted into the standardized receiving portions, allowing the same basic structure to adapt to various functional requirements.
Solution Approach 2:
The system allows for parameter changes in transmission type, gear ratio, and connection configuration by selecting different transmission elements and adaptor configurations, maintaining construction simplicity while providing extensive variation options for different application requirements.
4Stability of the object's composition
If traditional connection methods are used, then the structure is stable, but the assembly time and complexity increase
Solution Approach 1:
The connection function is extracted and standardized into the adaptor component with the female thread, which can be independently manufactured and then quickly assembled to the gear wheel. This extraction allows for pre-manufacturing optimization while maintaining structural stability during final assembly.
Data Source
AI summary
An arm joint for a manipulator having a motor with a transmission, comprising a gear wheel that can rotate about a transmission axis of rotation, wherein the gear wheel is rotatably mounted in a housing of the arm joint and has an adapter on at least one of its end sides, and wherein the adapter has an opening that is central relative to the transmission axis of rotation on the side facing away from the end side of the gear wheel The central opening has an internal thread for the purpose of a simple construction, easy assembly and a great number of variation possibilities in terms of construction and application.