Variable-Length Robot Arm Cam Mechanism for Precise Reach Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing robot arm systems struggle to precisely adjust their operation range in varying environments due to limitations in hydraulic or pneumatic pressure systems, which also require separate devices, restricting their operation in narrow spaces.
Innovation Solution
A robot arm with a variable length structure, utilizing a motor-driven cam mechanism with slits and bosses to adjust the arm length through linear motion, allowing for flexible length changes without the need for external pressure systems, enabling optimized operation range adjustments within tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hydraulic or pneumatic pressure systems are used to adjust arm length, then the operation range can be changed, but the adjustment precision is insufficient and separate pressure supply devices are required
Solution Approach 1:
The patent replaces hydraulic or pneumatic pressure systems with a motor-driven cam mechanism. The motor rotates the first cam, which through its inclined slit and interaction with the boss on the second cam, converts rotational motion into precise linear motion of the second cam, thereby precisely adjusting the arm length without requiring external pressure supply devices
Solution Approach 2:
The patent introduces a motor as an intermediary device to drive the cam mechanism. The motor serves as a compact power source that converts electrical energy to mechanical rotation, which is then transformed by the cam mechanism into precise linear displacement for arm length adjustment, eliminating the need for separate hydraulic or pneumatic pressure supply systems
2Adaptability or versatility
If hydraulic or pneumatic pressure systems are used to adjust arm length, then the operation range can be changed, but the robot operation is restricted in narrow and tight spaces
Solution Approach 1:
The patent merges the power source (motor) and the length adjustment mechanism (cam mechanism) into a single integrated unit mounted on the robot arm. This combination eliminates the need for separate external pressure supply devices, reducing system complexity and enabling operation in narrow and tight spaces while maintaining the capability to adjust the operation range
Solution Approach 2:
The patent replaces complex hydraulic or pneumatic pressure supply systems with a compact motor-driven cam mechanism. This substitution integrates the power transmission and motion conversion functions within the robot arm structure, eliminating external pressure supply equipment and reducing overall system complexity for deployment in confined environments
3Device complexity
If the arm length is fixed, then the robot structure is simple, but the operation range cannot be optimized for different environments
Solution Approach 1:
The patent makes the arm length dynamic by introducing a motor-driven cam mechanism that enables continuous adjustment of the second cam's linear position. The motor rotates the first cam, which through its inclined slit guides the boss on the second cam to achieve precise linear displacement, allowing the arm length to be dynamically adapted to different operation environments while maintaining a relatively simple overall structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for precise and flexible adjustment of the robot arm's length, optimizing its operation range for different environments without the need for separate pressure supply systems, enhancing its operational flexibility and usability in confined spaces.
Implementation Method 1
a first cam having at least one slit having a specific inclination in one area thereof, and a second cam, at least a portion of which is disposed in an interior of the first cam, and having at least one first boss that passes through the at least one slit of the first cam
Data Source
AI summary
Disclosed is a robot including a variable length unit coupled to one section of at least one arm unit, wherein the variable length unit may include a motor, a first cam having at least one slit having a specific inclination in one area thereof, and a second cam, at least a portion of which is disposed in an interior of the first cam, and having at least one first boss that passes through the at least one slit of the first cam, wherein the first cam may be rotated through driving of the motor, the second cam may be linearly moved while the at least one first boss is guided by the at least one slit in correspondence to rotation of the first cam, and a length of the at least one arm unit may vary in correspondence to linear motion of the second cam.