Robot Wire Routing via Rotary Drum Hollow Axis
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Solution Overview
Problem
In existing wire-body processing structures for robots, the wire body often interferes with the arm, limiting the operating area and causing mechanical interference, especially when the arm is rotated to positions near the rotary drum.
Innovation Solution
A wire-body processing structure where the wire body is led out from the base, guided through a hollow part in the rotary drum, bent to the rear, and fixed with surplus length to avoid interference by passing through a cut-away portion in the rotary drum, allowing it to be routed below the arm's operational path, thus minimizing radial projection and avoiding contact with the arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wire body is disposed to wrap around the rear side of the rotary drum, then the wire body can be fixed to the rotary drum and arm, but the operating area of the first arm is limited due to interference between the arm and wire body
Solution Approach 1:
The wire body routing is changed from a horizontal path wrapping around the rear side of the rotary drum to a vertical path through a hollow part extending along the first axis from inside the base to the top surface. This dimensional change allows the wire body to pass through the rotary drum structure rather than around it, eliminating spatial interference with the arm's operating area.
Solution Approach 2:
A guide member is introduced as an intermediary component to guide the wire body from the hollow part through the cut-away portion to a position below the arm. The guide member ensures proper wire body routing and positioning, preventing contact between the wire body and the arm while maintaining the benefits of the new routing path.
2Ease of operation
If the wire body is led out through the hollow part and routed below the arm, then interference is avoided, but the wire body requires sufficient surplus length for arm operation
Solution Approach 1:
The wire body is routed through the hollow part and guided by the guide member to a position below the arm before arm operation begins. This preliminary routing ensures that the wire body has sufficient surplus length and proper positioning to accommodate the full range of arm motion without interference or excessive tension.
3Reliability
If the wire body is fixed with a first fixing member to the rotary drum and second fixing member to the arm, then the wire body is secured, but the wire body may contact stoppers and suffer wear
Solution Approach 1:
The guide member serves as an intermediary that directs the wire body through the cut-away portion and positions it below the arm, preventing contact between the wire body and stoppers. This intermediary structure maintains reliable fixation while eliminating wear-causing contact.
Solution Approach 2:
The wire body is extracted from the traditional routing path that passes near stoppers and is rerouted through the hollow part and cut-away portion. This extraction removes the wire body from the harmful environment where stopper contact would cause wear.
Data Source
AI summary
A wire-body processing structure for a robot including a base, a rotary drum rotating about a first axis, and an arm rotating about a second axis. The rotary drum has a hollow part extending from inside the base, along the first axis, and opening in a top surface of the rotary drum. The wire body inside the base is led out, via the hollow part, from the opening in the top surface of the rotary drum, is bent to the rear side of the rotary drum, is guided below the arm, is fixed to the rotary drum with a first fixing member, is bent along the arm, and is fixed to a side surface of the arm with a second fixing member, with a certain surplus of a length between the first fixing member and the second fixing member.