Robot Joint Positioning Jig for Accurate Origin Restoration
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Solution Overview
Problem
Existing robot joints lack efficient and user-friendly mechanisms for accurately restoring the origin position after motor or reduction gear replacement, leading to operational hindrances and complexity in positioning.
Innovation Solution
A positioning jig with machined flat surfaces and orthogonal markings is used to align and stabilize the relative movement of robot joint members, featuring a base part with a pressing surface and a marking indicator, allowing easy alignment and stable positioning without unnecessary protrusions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scribe line-like markings are used for positioning, then the joint can be restored to origin position, but the positioning process becomes complex and operationally difficult
Solution Approach 1:
A positioning jig is introduced as an intermediary tool between the two joint members. The jig includes a base part with a pressing surface that contacts one member and a marking indicator part that extends perpendicular to the pressing surface. This intermediary device simplifies the positioning operation by providing a clear visual reference (marking indicator) that aligns with markings on the joint members, making the origin position restoration straightforward without requiring complex procedures
2Manufacturing precision
If protrusions are added for positioning, then alignment can be achieved, but hindrances and operational complexity increase
Solution Approach 1:
The positioning jig is segmented into distinct functional parts: a base part with a pressing surface for contacting one joint member, and a marking indicator part that extends perpendicular to the pressing surface. This segmentation allows each part to perform its specific function efficiently - the base part provides stable contact and the marking indicator provides clear visual alignment reference - while avoiding the need for complex protrusions or additional structural elements that would create hindrances
Data Source
AI summary
A positioning jig for a robot having two members constituting a joint, are supported to be movable relative to each other, and are provided with machined flat surfaces extending parallel to a relative movement direction, the surfaces having a linear marking placed therein, the marking extending in a direction orthogonal to the relative movement direction. The positioning jig includes: a base part with a flat pressing surface placeable in close contact with one of the machined flat surfaces, and a linear first edge extending along either the pressing surface or a plane parallel to the pressing surface; and a marking indicator part placed within a plane containing the first edge and orthogonal to the pressing surface, and is placed at a position that is aligned with at least a portion of the marking in the other of the machined flat surfaces.