Motor-Driven Probe Tip Unit for 3D Shape Measurement
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Solution Overview
Problem
Existing shape measurement systems face limitations in measuring the depth of holes and distance to wall surfaces due to fixed probe tip lengths and irradiation angles, leading to decreased accuracy when measuring inclined surfaces like screw holes.
Innovation Solution
A shape measurement system with a motor-rotated probe tip unit, a light source, and a calculation unit that adjusts the optical path length and polarization direction of measurement light to accommodate various object shapes, allowing for detachable and replaceable probe tips with adjustable focal distances and angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the probe tip unit length and focus position are fixed, then the device structure is simple, but the measurement depth of holes and distance to wall surfaces is limited
Solution Approach 1:
The probe tip unit is designed to be detachable and replaceable, allowing dynamic reconfiguration of the measurement system. Different probe tip units with varying lengths and focal positions can be selected based on the measurement requirements, enabling the system to adapt to different measurement depths and distances while maintaining structural simplicity through modular design
2Device complexity
If the irradiation angle of measurement light is fixed, then the optical system is simple, but measurement accuracy decreases when measuring inclined surfaces like screw holes
Solution Approach 1:
The system employs multiple probe tip units with different irradiation angles that can be detached and replaced. When measuring inclined surfaces such as screw holes, the appropriate probe tip unit with a matching irradiation angle is selected to ensure the measurement light strikes the surface at the optimal angle, maintaining high measurement accuracy without requiring complex adjustable optical mechanisms
3Adaptability or versatility
If multiple probe tip units with different specifications are prepared, then measurement versatility is improved, but device complexity increases
Solution Approach 1:
The measurement system is segmented into a main body and multiple detachable probe tip units, each with specific specifications for different measurement tasks. This segmentation allows the system to achieve high versatility by combining the main body with different probe tip units, while managing complexity through modular architecture where each unit has a standardized interface and clear functional definition
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 accurate three-dimensional measurement of objects with complex shapes by adjusting the optical path and polarization, improving measurement accuracy and versatility.
Implementation Method 1
measurement light is deflected in a direction other than the direction of the main axis 19 of the processing machine by reflecting the measurement light
Data Source
AI summary
Provided is a shape measurement system in order to perform three-dimensional measurement corresponding to a measurement object having various shapes, which includes a measurement probe, a probe tip, and a processor. The probe tip includes an optical element that is configured to irradiate an object with measurement light and a cylindrical unit that is configured to lock the optical element. The processor is configured to calculate an optical path length from the optical element to an object based on reflected light of the measurement light with which the object is irradiated; and calculate a three-dimensional shape of the object based on the input information and the optical path length.