Linear Spindle Dial Gauge for Continuous Scanning
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Solution Overview
Problem
Lever-type dial gauges have a limited measuring range, requiring precise initial alignment and extensive preparation, which hampers measurement efficiency and accuracy in continuous scanning measurements.
Innovation Solution
A linear-moving-spindle measuring device with a ball bearing-guided spindle and a lever-type contact point allows for continuous scanning measurements with high resolution and accuracy, enabling a longer measuring range and reduced alignment requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a lever-type dial gauge is used to achieve high measurement precision and resolution, then measurement accuracy is improved, but the measuring range is limited to a very small area (about 1-2 mm)
Solution Approach 1:
The invention divides the measurement system into two functional parts: a lever-type dial gauge for high-precision measurement and a linear-moving-spindle mechanism for extended measuring range. The lever-type dial gauge maintains measurement accuracy while the linear-moving-spindle extends the measuring range to 10mm or more by allowing the contact point to move linearly along the spindle axis.
Solution Approach 2:
The invention merges the advantages of two different measuring principles: the lever-type dial gauge provides high precision and resolution, while the linear-moving-spindle provides extended measuring range. By combining these two mechanisms into a single integrated device, the invention achieves both high measurement accuracy (0.01mm or 0.001mm) and a long measuring range (10mm or more).
2Measurement precision
If a lever-type dial gauge with limited measuring range is used, then measurement precision is maintained, but strict adjustment and initial alignment are required, increasing preparation time and reducing measurement efficiency
Solution Approach 1:
The invention introduces a dynamic linear-moving-spindle mechanism that allows the contact point to move freely along the spindle axis within a 10mm or more range. This dynamic adjustment capability eliminates the need for strict initial alignment, as the operator can adjust the measurement position during the measurement process itself, thereby reducing preparation time and improving measurement efficiency.
Solution Approach 2:
The invention changes the operational parameter of the measuring device by allowing continuous adjustment of the contact point position along the spindle axis. This parameter change enables the device to adapt to different measurement scenarios without requiring precise initial setup, thus improving measurement efficiency while maintaining measurement precision.
3Device complexity
If a lever-type dial gauge with short measuring range is used, then device simplicity is maintained, but the measuring range is limited, restricting the types of workpieces that can be measured
Solution Approach 1:
The invention creates a universal measuring device that can measure various types of workpieces with different dimensions and surface characteristics. The linear-moving-spindle mechanism with 10mm or more measuring range enables the device to measure not only small features but also larger surfaces, steps, and contours, making it applicable to a wide variety of measurement scenarios while maintaining the simplicity of the lever-type dial gauge mechanism.
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 device achieves high-resolution, high-accuracy measurements over a longer range, improving measurement efficiency and reducing preparation time by using a ball bearing for low-friction guidance and a lever-type contact point for flexible measurement points.
Implementation Method 1
the bearing part is a ball bearing
Implementation Method 2
using a ball bearing for low-friction guidance
Data Source
AI summary
There is provided a measuring device that is inexpensive and easy to use, yet provides sufficient accuracy and resolution in continuous scanning measurement to measure workpiece surfaces. A dial gauge includes a spindle provided to be movable reciprocatively in an axial direction through a main body case. The main body case includes a stem provided to protrude from a side face of the main body case. A ball bearing that bears the spindle is provided inside the stem. A workpiece and the dial gage are relatively moved while a contact point at the tip of the spindle is in contact with the surface of the workpiece, and continuous scanning measurement is performed to measure irregularities of the surface of the workpiece or the amount of runout of the rotating workpiece.