Indentation Tester Vertical Drift Adjustment Mechanism
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Solution Overview
Problem
Conventional indentation testers face challenges in accurately measuring indentation depth due to vertical positioning drift caused by individual differences in indenters, requiring time-consuming and costly adjustments when switching indenters.
Innovation Solution
The indentation tester incorporates an adjustment mechanism with a spiraling surface on two hollow disks that can rotate on the indenter column axis, allowing for precise adjustment of the indenter coupling's vertical position, enabling quick and cost-effective alignment with the baseline position of the indenter position detector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new indenter is mounted on the indenter column, then the indenter can be replaced to measure different samples, but the height of the indenter varies due to individual differences causing positioning drift in the vertical direction
Solution Approach 1:
The patent applies preliminary action by providing a baseline position adjustment mechanism that can be adjusted before each indenter mounting. The adjustment mechanism includes a movable baseline positioner that can be positioned at different heights to compensate for indenter height variations before the actual measurement begins, ensuring accurate positioning without requiring post-measurement recalibration
Solution Approach 2:
The patent changes the parameter of baseline position height to accommodate different indenter heights. By making the baseline position adjustable in the vertical direction, the system can compensate for individual indenter height differences and maintain consistent measurement accuracy across different indenters
2Measurement precision
If the baseline position is readjusted or a spacer is inserted when switching indenters, then the indenter coupling can be positioned at the vertical-direction baseline position, but the operation requires time and may increase costs
Solution Approach 1:
The patent implements self-service by designing an adjustment mechanism that can be easily operated by the user without requiring specialized tools or complex procedures. The movable baseline positioner can be quickly adjusted by simply moving it to the appropriate height position and securing it, making the adjustment process intuitive and time-efficient
Solution Approach 2:
The patent introduces dynamics by making the baseline position adjustable rather than fixed. The movable baseline positioner allows the system to adapt dynamically to different indenter heights, enabling quick reconfiguration when switching indenters without requiring time-consuming realignment procedures
3Productivity
If the indenter coupling is not positioned at the baseline position, then the measurement can proceed, but the measurement of maximum indentation depth may not be performed to satisfaction or resolution may be reduced
Solution Approach 1:
The patent applies preliminary action by adjusting the baseline position before the measurement begins. This ensures that the indenter coupling is properly positioned at the baseline position prior to starting the indentation test, preventing measurement errors and ensuring high resolution without requiring time-consuming adjustments during the measurement process
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
This solution allows for rapid and economical adjustment of the indenter coupling to the baseline position, ensuring accurate measurement of indentation depth even when switching indenters, thereby improving measurement resolution and reducing operational time and costs.
Implementation Method 1
The first hollow disk includes a spiraling surface formed on a bottom surface. The second hollow disk includes a spiraling surface formed on a top surface, the spiraling surface of the second hollow disk having a thread equal to that of the spiraling surface of the first hollow disk.
Data Source
AI summary
Indentation tester capable of adjusting vertical-direction positioning drift due to individual differences of an indenter when indenters are switched includes an adjustment mechanism. The adjustment mechanism adjusts relative vertical-direction positions of a displacement sensor movable portion and a displacement sensor fixed portion. The adjustment mechanism includes a first hollow disk having a spiraling surface formed on a bottom surface; and a second hollow disk having a spiraling surface formed on a top surface. The spiraling surface of the second hollow disk has a thread equal to that of the spiraling surface of the first hollow disk. The first hollow disk rests on the second hollow disk such that the bottom surface of the first hollow disk is overlaid on the top surface of the second hollow disk. The first hollow disk and the second hollow disk are capable of rotation on a center axis of an indenter column.