Robot Arm Assembly Compact Design via Side-by-Side Motor Mounting
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Solution Overview
Problem
Conventional six-axis industrial robots are cumbersome and cannot be safely installed in small workspaces due to the length and volume of their supporting arms, which house the motors driving the mechanical arms.
Innovation Solution
The robot arm assembly configures the first and second driving members side by side within a hollow, L-shaped supporting arm, reducing its length by integrating a transmission mechanism that includes drive wheels, belts, bevel gears, and reducers to rotate the mechanical arms, allowing for a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the motors are arranged along the length direction of the supporting arm, then the motors can be mounted on the supporting arm, but the length of the supporting arm and the total volume of the robot increase
Solution Approach 1:
The patent transitions from arranging motors along the length direction (one dimension) to arranging them in the width direction (another dimension) of the supporting arm. This dimensional change allows the motors to be mounted on the supporting arm while avoiding an increase in the arm's length, thereby resolving the technical contradiction between ease of manufacture and supporting arm length.
2Ease of manufacture
If the motors are arranged along the length direction of the supporting arm, then the motors can be mounted on the supporting arm, but the total volume of the robot increases
Solution Approach 1:
The patent arranges motors in the width direction rather than the length direction, utilizing a different spatial dimension for motor placement. This approach enables motor mounting on the supporting arm while preventing an increase in the robot's total volume, effectively resolving the contradiction between ease of manufacture and volume constraints.
3Area of stationary object
If the supporting arm length is reduced to fit small workspaces, then the robot can operate in small workspaces, but the motors cannot be properly mounted on the supporting arm
Solution Approach 1:
The patent enables motor mounting on a shortened supporting arm by changing the arrangement direction from length to width. This dimensional shift allows the motors to be accommodated on the reduced-length arm, resolving the contradiction between workspace size and motor mounting capability.
4Area of stationary object
If the supporting arm length is reduced to fit small workspaces, then the robot can operate in small workspaces, but the total volume of the robot decreases which may affect motor placement
Solution Approach 1:
The patent reduces the robot's volume by shortening the supporting arm length while maintaining motor placement capability through width-direction arrangement. This dimensional strategy resolves the contradiction between workspace size and robot volume, allowing the robot to operate in compact spaces without sacrificing motor mounting functionality.
Data Source
AI summary
A robot arm assembly includes a supporting arm, first and second mechanical arms, a first driving member, a second driving member, a first transmission mechanism between the first mechanical arm and the first driving member, and a second transmission mechanism between the second mechanical arm and the second driving member. The first driving member drives the first transmission mechanism to rotate the first mechanical arm. The second driving member drives the second transmission mechanism to rotate the second mechanical arm. The first driving member and the second driving member are both carried in the supporting arm and are arranged side by side.