Vertical Articulated Robot Solid Motor Shaft Wiring
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Solution Overview
Problem
Conventional vertical articulated robots with built-in speed reducers face challenges in increasing rotational speed and acceleration due to inertia issues caused by wiring insertion through hollow motor shafts, making it difficult to enhance performance.
Innovation Solution
The design incorporates a wiring unit that houses wiring within the joint axis portion units, using solid motor shafts and directly connected speed reducers to reduce inertia, allowing for increased rotational speed and acceleration, and simplifies assembly and maintenance by integrating motors and speed reducers within the joint axis units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wiring is inserted through the hollow portion of the motor shaft, then wiring can be provided for the actuator, but the inertia around the rotation axis increases
Solution Approach 1:
The robot system is divided into modular joint axis portion units, with wiring units separately integrated into these modules. This segmentation allows wiring to be provided without inserting it through the motor shaft, thereby maintaining low inertia while ensuring wiring availability for actuators.
2Ease of operation
If wiring is inserted through the hollow portion of the motor shaft, then wiring can be provided, but rotational speed and rotational acceleration cannot be increased
Solution Approach 1:
By segmenting the robot into modular units with separate wiring integration, the design eliminates the need to insert wiring through the motor shaft. This maintains the motor shaft's solid structure, reducing inertia and enabling higher rotational speed and acceleration while still providing necessary wiring connections.
3Ease of manufacture
If motors and speed reducers are integrated within joint axis portion units, then assembly and maintenance are simplified, but the structure becomes more complex
Solution Approach 1:
Motors, speed reducers, and wiring units are merged into integrated joint axis portion units. This combining of components simplifies assembly and maintenance procedures while the modular design manages structural complexity by creating standardized, replaceable modules.
Solution Approach 2:
The joint axis portion units are designed as universal modules that can be applied across different robot configurations. This multi-functionality approach standardizes the structure, reducing overall system complexity while maintaining ease of assembly and maintenance through consistent modular design.
Data Source
AI summary
A vertical articulated robot includes a plurality of joint axis portion units configured to rotationally drive a plurality of arms, and a wiring unit configured to allow wiring portions of the plurality of joint axis portion units to be arranged therein. A joint axis portion unit integrally includes a first motor including a solid first motor shaft and a first speed reducer directly connected to the first motor shaft.