Optical Measurement Machine with Synchronized Contact Probe
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Solution Overview
Problem
Current optical measuring machines for longitudinally extending objects struggle to accurately measure features that are not optically detectable, such as undercuts, keys, slots, blind bores, or counterbores, as they require integration with contact sensors, leading to increased complexity and costs due to the need for substantial modifications in movement algorithms and interpolation of axes.
Innovation Solution
An optical measuring machine with a holding assembly, sensing optical assembly, and contact probe that includes a synchronization device to combine signals from angular, axial, and radial positions, allowing precise measurement without axis interpolation, along with a calibration body for recalibration and a tool substituting program for efficient maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If contact sensors are integrated with the optical system to measure non-optically detectable features, then measurement capability is extended, but device complexity increases due to substantial modification of movement algorithms and axis interpolation
Solution Approach 1:
The patent divides the measurement system into independent functional modules: the optical measurement system and the contact measurement system operate independently with separate control algorithms. The contact sensor is integrated into the existing optical carriage without requiring modification of the optical system's movement algorithms, thus extending measurement capability while avoiding increased algorithmic complexity
Solution Approach 2:
The patent creates a universal measurement platform where the same carriage structure supports both optical sensors and contact sensors. The control system can selectively activate either optical or contact measurement modes depending on the measurement task, providing multi-functionality without requiring complex integrated algorithms for both systems
2Adaptability or versatility
If contact sensors are integrated with the optical system, then measurement capability is extended, but manufacturing costs increase due to substantial modification requirements
Solution Approach 1:
The patent segments the measurement systems so that the contact sensor assembly can be independently manufactured and installed on the existing optical carriage. This modular approach avoids the need for expensive substantial modifications to the optical system, reducing manufacturing costs while extending measurement capability
Solution Approach 2:
The patent introduces an intermediary control module that manages contact sensor operations without requiring modification of the existing optical control system. This intermediary layer allows integration of contact measurement capability while keeping manufacturing costs low by avoiding substantial modifications to the proven optical system
3Measurement precision
If axis interpolation is implemented to coordinate optical and contact sensors, then measurement accuracy is improved, but device complexity and maintenance requirements increase
Solution Approach 1:
The patent separates the control algorithms for optical and contact measurements into independent segments. Each sensor type has its own dedicated control routine that operates independently, eliminating the need for complex axis interpolation while maintaining measurement accuracy through independent optimization of each measurement mode
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 precise and cost-effective measurement of objects with complex geometries by simplifying the measurement process and reducing maintenance times, while maintaining machine versatility and avoiding complex axis interpolation.
Implementation Method 1
the shadow that is created when the object is illuminated with a beam of parallel rays directed perpendicularly to its longitudinal axis
Data Source
AI summary
An optical measuring machine for measuring an object having a mainly longitudinal extension includes a holding assembly for the object, a sensing optical assembly movable parallel to a longitudinal axis of the object in order to allow complete acquisition of an image representing it, a contact probe connected to the optical assembly to move together with it along said longitudinal axis and movable with respect to the optical assembly orthogonally to the longitudinal axis, and sensor means configured to detect at least one angular position about the longitudinal axis of the holding assembly, an axial position along the longitudinal axis of the optical assembly and a radial position, orthogonal to the longitudinal axis, of the contact probe.