Overlapping Robot Arm Configuration for Compact Cell Design
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Solution Overview
Problem
Existing robot systems require a large space to move their tip end by 180° around a rotating axis, limiting their installation and operational efficiency due to interference issues.
Innovation Solution
A robot system configuration where a first robot and a second robot are positioned in the same cell, with the first robot having an arm that rotates around one axis and a longer arm that rotates around a different axis, allowing them to overlap and reduce the necessary space, enabling efficient movement of the tip end by 180° without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a robot arm rotates around a rotating axis to move the tip end by 180°, then the robot can perform work at different positions, but a large space is required to prevent interference between arms
Solution Approach 1:
The patent applies the nesting principle by configuring the robot arm segments to overlap when viewed from the rotating axis. The second arm is positioned such that it overlaps with the first arm in the radial direction, allowing the arm to rotate 180° without requiring a large clearance space. This nested arrangement enables compact movement while maintaining the full range of motion.
Solution Approach 2:
The patent changes the spatial arrangement by viewing the arm configuration from the rotating axis dimension. Instead of requiring large radial clearance for 180° rotation, the arms are arranged to overlap in the radial direction when viewed from the axis, utilizing the angular dimension to achieve compact positioning.
2Ease of operation
If a large space is provided for preventing interference, then the robot can rotate its arm by 180°, but the cell size and installation space increase
Solution Approach 1:
The nesting principle is applied by positioning the second arm to overlap with the first arm in the radial direction when viewed from the rotating axis. This allows the arm to achieve 180° rotation capability while maintaining a compact cell size, as the arms are nested within each other's spatial envelope rather than requiring separate clearance zones.
3Productivity
If multiple robots are provided in one cell, then more work can be performed, but the cell size must be minimized to reduce installation space
Solution Approach 1:
The patent applies nesting to configure robot arms that can rotate 180° within a compact space, enabling multiple robots to be positioned in one cell without requiring excessive installation space. The overlapping arm arrangement allows efficient use of the cell volume.
Solution Approach 2:
By utilizing the angular dimension from the rotating axis perspective, the patent enables compact cell design that can accommodate multiple robots. The arms are arranged to overlap radially, allowing multiple robot units to be packed into a smaller overall cell volume.
Data Source
AI summary
A robot system includes a cell; and a first robot and a second robot which are provided in the cell, in which the first robot includes an n-th (n is an integer which is equal to or greater than 1) arm which rotates around an n-th rotating axis, and an (n+1)th arm which is provided to rotate around an (n+1)th rotating axis which is an axial direction different from an axial direction of the n-th rotating axis, in the n-th arm, in which the length of the n-th arm is longer than the length of the (n+1)th arm, and in which, when viewed from the (n+1)th rotating axis, the n-th arm and the (n+1)th arm overlap each other.