Ultrasonic Measurement Device with Movable Acoustic Lens
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Solution Overview
Problem
Existing measurement devices struggle to accurately measure the surface shape of complex shapes, such as molds, using ultrasonic waves due to difficulties in maintaining consistent irradiation angles during scanning.
Innovation Solution
A measurement device comprising an ultrasonic vibrator, acoustic lens, sound-receiving element array, A/D converter, calculator, and driving mechanism that allows for adjustable positioning and tilting of the measurement target relative to the ultrasonic wave, enabling precise measurement of surface shape and roughness by converting ultrasonic waves to digital signals and calculating acoustic intensity distributions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If scanning irradiation with ultrasonic wave is performed on complex-shaped targets, then measurement coverage is improved, but measurement precision deteriorates due to changing irradiation angles
Solution Approach 1:
The patent applies dynamics by making the acoustic lens movable relative to the ultrasonic vibrator through a driving mechanism. This allows the acoustic lens to dynamically adjust its position and maintain the correct irradiation angle on complex-shaped targets during scanning, preventing measurement errors while achieving complete surface coverage
Solution Approach 2:
The patent uses an acoustic lens as an intermediary component between the ultrasonic vibrator and the measurement target. The acoustic lens focuses and directs the ultrasonic waves at consistent angles onto the target surface, enabling accurate measurement of complex shapes without direct angle changes from the vibrator itself
2Reliability
If ultrasonic wave scanning is performed on complex-shaped targets, then measurement completeness is improved, but measurement reliability deteriorates due to angle variation
Solution Approach 1:
The patent makes the acoustic lens serve multiple functions: it focuses ultrasonic waves, directs them at consistent angles, and its movable design allows it to adapt to various complex target shapes. This multi-functionality maintains measurement reliability across different geometries without requiring completely different measurement systems for each target type
Solution Approach 2:
The driving mechanism that moves the acoustic lens adds dynamic capability to the system, allowing automatic adaptation to complex target geometries while maintaining consistent measurement conditions, thereby improving reliability without proportionally increasing operational complexity
3Measurement precision
If conventional ultrasonic measurement is used on targets coated with cutting fluid, then non-contact measurement advantage is maintained, but measurement precision deteriorates
Solution Approach 1:
The patent uses ultrasonic wave-based non-contact measurement to replace mechanical contact measurement methods. This substitution eliminates the problem of cutting fluid interference that plagues contact methods, while the acoustic lens ensures precise measurement accuracy is maintained through proper wave focusing and angle control
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 measurement of surface shape and roughness on complex targets like molds, even when coated with cutting fluids, by adjusting the position and angle of the target relative to the ultrasonic wave, providing precise geometric dimensions and surface roughness analysis.
Implementation Method 1
an ultrasonic vibrator that emits an ultrasonic wave to a measurement target
Implementation Method 2
an acoustic lens that focuses an ultrasonic wave emitted from the ultrasonic vibrator and reflected and diffracted on the measurement target
Implementation Method 3
an acoustic lens that focuses an ultrasonic wave emitted from the ultrasonic vibrator and reflected and diffracted on the measurement target
Implementation Method 4
a sound-receiving element array that converts the ultrasonic wave focused by the acoustic lens to an electrical signal
Data Source
AI summary
A measurement device comprises: an ultrasonic vibrator that emits an ultrasonic wave to a measurement target; an acoustic lens; a sound-receiving element unit; an A/D converter array; a calculator connected to the A/D converter array; and a driving mechanism that makes the measurement target movable or tiltable relative to the ultrasonic vibrator. The calculator stores information in chronological order acquired by the sound-receiving element unit through scanning irradiation with the ultrasonic wave, converts the information stored in chronological order to space information, and acquires an acoustic intensity distribution.