Robot Joint Shaft Mastering with V-Groove Alignment
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Solution Overview
Problem
Existing robot joint shaft mastering methods are inefficient in accurately positioning members without secure fastening, leading to potential misalignment and increased complexity in maintenance and measurement processes.
Innovation Solution
The implementation of V-shaped grooves and protrusions on the mastering mounting surfaces of robot joint shafts allows for precise alignment and positioning of fixtures without the need for bolts or pins, utilizing the groove bottoms and ridges as marking-off lines for accurate restoration of the joint shaft's origin position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If markers like marking-off lines are provided on two members at the joint shaft for positioning, then the joint shaft can be restored to its origin position after motor or reducer replacement, but the positioning accuracy and alignment precision are insufficient leading to potential misalignment
Solution Approach 1:
The patent uses visual markers (marking-off lines) on the two members to indicate alignment positions. These markers provide a visual reference that improves positioning accuracy during restoration, directly addressing the insufficient alignment precision of conventional methods while maintaining ease of repair.
2Measurement precision
If a fixture is attached to a base with a reference flat surface and measurement device is used to measure distance, then the position can be measured, but the measurement process is complex and time-consuming
Solution Approach 1:
The patent extracts the measurement function from a complex measurement device and base setup, and integrates it directly into the joint shaft structure through markers and reference features. This allows positioning information to be obtained directly from the joint shaft itself, eliminating the need for separate measurement equipment and procedures, thereby reducing measurement time while maintaining precision.
Solution Approach 2:
The joint shaft structure itself provides the measurement and positioning reference features (markers, reference flat surfaces) needed for alignment. The system becomes self-sufficient for positioning purposes, eliminating the need for external measurement devices and complex measurement procedures, thus reducing both time and complexity.
3Reliability
If bolts or pins are used to fasten fixtures to joint shafts for secure attachment, then the fixtures are firmly fixed, but the attachment procedure becomes complex and maintenance difficulty increases
Solution Approach 1:
The patent removes the need for separate fastening elements (bolts, pins) by integrating the positioning and attachment functions directly into the joint shaft structure. The markers and reference features are built into the joint shaft members themselves, allowing fixtures to be positioned and attached without additional fastening hardware, thereby reducing attachment complexity while maintaining security.
Solution Approach 2:
The patent combines the positioning reference features and attachment interface into a single integrated structure on the joint shaft. The markers and reference flat surfaces are incorporated into the joint shaft members themselves, merging the functions of positioning and fastening into one unified system, which simplifies the overall attachment procedure while ensuring reliable fixture fixation.
Data Source
AI summary
A robot in which two members constituting a joint shaft and supported in a relatively movable manner are each provided with a V-shaped groove having two sloped inner surfaces intersecting each other at a linear groove bottom extending orthogonally to a movement direction, or a V-shaped protrusion having two sloped outer surfaces intersecting each other at a linear ridge extending orthogonally to the movement direction. When the two members of the joint shaft are disposed in a predetermined operational position, the groove bottoms, the ridges, or the groove bottom and the ridge are disposed in alignment with each other.