Dual-Axis Rotary Table Layout to Cut Inertia and Avoid Interference
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Solution Overview
Problem
Existing rotary table devices face challenges in efficiently changing the orientation of a workpiece about two axes while minimizing interference with the device components and reducing rotational moment and inertia, particularly when handling heavy objects.
Innovation Solution
A positioner design featuring a base with support parts, a shaft member, and a rotary table that allows for independent rotation about two axes, with the rotary table positioned to minimize overlap with the shaft member and incorporate a unique power cable routing system to prevent interference and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the rotary table is positioned closer to the shaft member to reduce rotational moment and inertia, then the rotational moment and inertia are reduced, but the device components may interfere with each other
Solution Approach 1:
The patent positions the rotary table in a specific spatial arrangement relative to the shaft member, utilizing three-dimensional space optimization. The rotary table is arranged such that its rotational path does not intersect with the shaft member's position, allowing the table to be placed closer to minimize rotational moment while avoiding component interference through proper spatial positioning.
2Object-affected harmful factors
If the rotary table is positioned farther from the shaft member to avoid interference with device components, then interference is prevented, but the rotational moment and inertia increase
Solution Approach 1:
The patent employs spatial optimization by arranging the rotary table and shaft member in a configuration that utilizes available three-dimensional space. The rotary table is positioned at an optimized distance that balances interference prevention with minimal rotational moment, achieving both goals through careful geometric arrangement rather than simple proximity or distance.
3Use of energy by moving object
If the power cable is routed through the rotational path to provide power to the rotary table, then power supply is enabled, but the cable may deform or become tangled during rotation
Solution Approach 1:
The patent extracts the power cable from the rotational path, routing it through a fixed pathway that does not intersect with the rotary table's rotation. This separates the power supply function from the rotational movement, allowing the cable to remain stationary while still providing power to the rotating table, thus preventing deformation and tangling.
Solution Approach 2:
The patent introduces a cable routing mechanism that acts as an intermediary between the power source and the rotary table. This intermediary system guides the cable along a predetermined path that avoids the rotational zone, using guides or channels to maintain cable position and prevent interference with the rotating components.
Data Source
AI summary
A positioner includes: a base having a pair of support parts disposed with a prescribed gap therebetween in a direction of first axis; a shaft member disposed between the pair of support parts and is supported so as to be rotatable about the first axis relative to the base; and a disc-shaped rotary table supported to be rotatable about a second axis orthogonal to the first axis relative to the shaft member and having a mounting surface where a workpiece can be mounted, The rotary table has an outer diameter dimension that fits inward of both ends of the shaft member in the direction of the first axis, and in a movable range of the rotary table about the first axis.