Self-Aligning Probe Countersink Mate for Precision Measurement
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Solution Overview
Problem
Existing material measuring devices face challenges in achieving precise measurements due to debris buildup and misalignment between the probe and magnetic chuck, leading to measurement errors and potential damage to the magnetic chuck.
Innovation Solution
A self-centering probe with a 90-degree to 100-degree countersink mate and a magnetic chuck system featuring an alignment ball, ring magnet, and impact transfer shaft, which reduces debris buildup and ensures precise alignment, minimizing measurement errors and chuck damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a flat probe mate is used with a magnetic chuck, then the device structure is simple, but debris buildup occurs and measurement precision deteriorates
Solution Approach 1:
The invention replaces the flat probe mate surface with a spherical ball mate that fits into a corresponding ball receptacle in the magnetic chuck. This curved spherical interface eliminates debris buildup areas present in flat surfaces and provides self-centering alignment, thereby improving measurement precision while maintaining reasonable device complexity.
2Device complexity
If a flat probe mate is used with a magnetic chuck, then the device structure is simple, but misalignment occurs leading to measurement errors
Solution Approach 1:
The spherical ball mate fitting into a ball receptacle creates a self-centering mechanism that automatically aligns the probe with the magnetic chuck center. This curved interface geometry provides inherent alignment accuracy without requiring complex adjustment mechanisms, resolving the contradiction between structural simplicity and alignment precision.
3Productivity
If high impact forces are applied during indentation, then productivity is improved, but damage to the magnetic chuck increases
Solution Approach 1:
The spherical ball interface distributes impact forces more evenly across the contact area compared to a flat surface. This curved geometry reduces stress concentration and minimizes debris generation during high-force indentation operations, allowing higher productivity while protecting the magnetic chuck from damage.
Solution Approach 2:
The ball mate acts as an intermediary element between the probe and magnetic chuck, absorbing and distributing impact forces. This intermediate spherical interface protects the magnetic chuck from direct high-force impacts while maintaining measurement capability, enabling higher productivity without compromising chuck durability.
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 significantly reduces measurement errors by at least 5% and debris buildup by up to 90%, maintaining precision and extending the lifespan of the magnetic chuck.
Implementation Method 1
a magnetic chuck comprising an alignment ball, a ring magnet and an impact transfer shaft
Data Source
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AI summary
The field of the invention generally relates to probes, related devices and methods for measuring material properties. In an embodiment, the present invention provides a test probe for use in a reference point indentation device. The test probe has an end proximal to a tip and an end distal to the tip. The distal end of the test probe has a self-centering mate comprising a countersink of about 90 degrees to about 100 degrees to a depth of between 0.010 in. and 0.035 in.