Dial Gauge Measuring Force Adjustment for Posture Tolerance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dial gauges face challenges in maintaining measurement accuracy and consistent measuring force across various postures due to their configuration, which affects measurement range and force application when the posture is changed from the normal downward position to inverted or lateral positions.
Innovation Solution
A measuring device with a spindle, a body case, and a measuring force adjustment unit that includes an external thread and a connection supporting member, allowing for adjustable biasing of the spindle through rotational operation of the external thread, enabling the device to maintain a desired measuring force regardless of posture by changing the position of the connection supporting member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a dial gauge is configured to bias a spindle toward one side with a spring, then the spindle can be biased toward the tip end, but the measuring force changes when the posture is changed to inverted or lateral positions
Solution Approach 1:
The patent applies the dynamics principle by making the biasing force adjustable through a measuring force adjustment unit that can be positioned at different locations along the spindle. This allows the device to adapt its biasing characteristics dynamically based on the measurement requirements and posture conditions, rather than having a fixed spring configuration. The adjustment unit can be moved to different axial positions to change the effective biasing force applied to the spindle.
Solution Approach 2:
The patent implements parameter changes by providing a measuring force adjustment unit with multiple position settings that change the biasing force parameter. The body case includes a through hole or slide groove that allows the adjustment unit to be positioned at different locations, thereby changing the mechanical parameters of the biasing system. This enables the same device to operate with different measuring forces suitable for various postures and measurement scenarios.
2Force
If a dial gauge is configured to bias a spindle toward one side with a spring, then the spindle can be biased, but the measuring force changes in the measurement range (stroke of the spindle)
Solution Approach 1:
The patent applies dynamics by making the biasing force可调 through the measuring force adjustment unit that can be positioned at different axial locations along the spindle. This dynamic adjustment capability allows optimization of the measuring force distribution across the measurement range, addressing the issue of force variation during spindle stroke.
3Device complexity
If the position of the biasing means is fixed, then the structure is simple, but the measuring force cannot be adjusted for different postures or measurement requirements
Solution Approach 1:
The patent implements dynamics by providing a measuring force adjustment unit that can be moved to different positions along the spindle axis. This creates a dynamically adjustable system where the biasing force can be modified based on measurement requirements, rather than having a completely fixed structure. The adjustment mechanism adds some complexity but enables significant versatility.
Solution Approach 2:
The patent applies universality by designing the measuring force adjustment unit to serve multiple functions: it can be positioned at different locations to adjust biasing force, it can accommodate different posture conditions (normal, inverted, lateral), and it provides a universal solution for various measurement scenarios. The through hole or slide groove structure in the body case supports this multi-position capability.
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
Enables measurement with a specified measuring force across different postures, ensuring consistent accuracy and adaptability in measurement range, allowing for precise shape inspection and multipoint measurements.
Implementation Method 1
a biasing means for biasing the spindle toward the tip end and having one end directly or indirectly engaged with the spindle and the other end directly or indirectly engaged with the measuring force adjustment unit
Data Source
AI summary
There is provided a measuring device (dial gauge) capable of performing measurement with a desired measuring force regardless of the posture of the measuring device.A dial gauge in an exemplary embodiment of the present invention includes a measuring force adjustment unit provided to a body case and capable of moving and being positioned and fixed in a direction substantially parallel to a moving direction of a spindle.A biasing means has one end directly or indirectly engaged with the spindle and the other end directly or indirectly engaged with the measuring force adjustment unit, and biases the spindle toward a tip end.The measuring force adjustment unit includes an external thread portion and a connection supporting member having one end screwed with the external thread portion and the other end coupled to the biasing means. The connection supporting member is screw-fed by rotationally operating the external thread portion in such a manner that a position of the connection supporting member is changed and fixed.