Biasing Positioning Pin for Tolerance-Adjustable Workpiece Fixing
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Solution Overview
Problem
In machining processes, items often require precise fixing to machining elements, but manufacturing tolerances can vary, necessitating frequent repositioning of pins and retaining elements to achieve accurate alignment.
Innovation Solution
A positioning member comprising a pin body with slits and a biasing element, where the biasing element includes an engagement section that can extend to secure objects and adjust for tolerances, and retaining elements to prevent rotation and secure the biasing element within the pin body, allowing for adaptable positioning on varying surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fixed pins and retaining elements are used, then positioning stability is achieved, but manufacturing tolerances require frequent repositioning
Solution Approach 1:
The pin body incorporates a biasing element that enables the engagement section to dynamically adjust its position and extension distance. This dynamic mechanism allows the pin to automatically adapt to dimensional variations in workpieces, maintaining reliable positioning while eliminating the need for frequent manual repositioning, thus resolving the contradiction between positioning stability and machining efficiency
2Device complexity
If fixed positioning pins are used, then structural simplicity is maintained, but adaptability to dimensional variations is poor
Solution Approach 1:
The pin structure transitions from a fixed rigid design to a dynamic adjustable design. The biasing element enables the engagement section to move and extend as needed, allowing the pin to adapt to various dimensional tolerances while maintaining a relatively simple overall structure that does not require complex mechanisms
Solution Approach 2:
The engagement section is nested within the pin body and can extend outward when needed. This nested configuration allows the pin to maintain a compact form when not in use while providing extended functionality when dimensional variations require adjustment, balancing structural simplicity with adaptability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables precise and adjustable fixing of objects on machining surfaces, accommodating dimensional variations and ensuring stable positioning without the need for constant repositioning of pins, thereby improving machining efficiency and accuracy.
Implementation Method 1
a biasing element, wherein the biasing element comprises an engagement section that is biased out from the pin body and capable of being actuated toward the pin body
Data Source
AI summary
The positioning pin has a pin body and a biasing element. The pin body defines a slit through which at least a portion of the biasing element is able to extend through. The pin body can be configured to be at least partially inserted into a working surface hole and help position an object. The biasing element has an engagement element that is able to bias the working object in a direction of the slit.