Movable Platform CMM Workpiece Positioning
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Solution Overview
Problem
Current methods for inspecting workpieces using Coordinate Measuring Machines (CMMs) are time-consuming and risky due to the need for manual alignment and careful handling of workpieces, which can lead to damage and slow down the inspection process.
Innovation Solution
A system comprising a stationary platform with a measurement area and movable platforms equipped with positioning locators and air jet transport, allowing for safe and speedy positioning of workpieces within a predetermined tolerance, reducing the need for manual alignment and enabling uninterrupted CMM measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual alignment and positioning of workpieces is performed, then measurement accuracy is improved, but inspection time increases and productivity decreases
Solution Approach 1:
The workpiece is pre-positioned on the movable platform using positioning locators that align with locator stops on the stationary platform. This preliminary positioning action ensures accurate coordinate data capture without requiring time-consuming manual alignment during the measurement process itself.
Solution Approach 2:
Positioning locators serve as intermediary elements between the workpiece and the CMM measurement system. These locators establish precise geometric relationships and transmit positioning information, enabling accurate measurements while eliminating the need for manual alignment operations.
2Adaptability or versatility
If manual handling of workpieces is used, then flexibility is maintained, but risk of damage increases and safety concerns arise
Solution Approach 1:
The movable platform with integrated positioning locators handles the workpiece autonomously. The system self-aligns and positions the workpiece using the locator stops, eliminating the need for manual handling and reducing the risk of damage while maintaining operational flexibility.
Solution Approach 2:
Positioning locators act as protective intermediaries between manual operations and the workpiece. These locators provide a controlled interface for positioning that prevents direct manual contact with the workpiece, thereby reducing the risk of damage while maintaining operational flexibility.
3Manufacturing precision
If positioning locators and locator stops are implemented, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The positioning system is segmented into discrete, simple components: positioning locators on the movable platform and corresponding locator stops on the stationary platform. This segmentation allows for easy manufacturing, assembly, and maintenance while achieving high positioning accuracy through the coordinated interaction of these simple elements.
Solution Approach 2:
Positioning locators and locator stops serve as simple intermediary elements that mediate between the movable and stationary platforms. These intermediaries provide precise geometric reference without adding significant complexity, as they consist of basic mechanical features that can be easily integrated into existing CMM systems.
4Productivity
If continuous measurement operations are enabled, then productivity increases, but measurement precision may be compromised
Solution Approach 1:
The workpiece is pre-positioned on the movable platform using positioning locators before the measurement process begins. This preliminary positioning ensures that when continuous measurements are performed, the workpiece remains in the correct location and orientation, maintaining measurement precision while enabling high-throughput inspection operations.
Solution Approach 2:
Positioning locators serve as intermediary reference elements that maintain measurement precision during continuous operations. These locators provide stable geometric references that ensure consistent positioning throughout the measurement process, allowing uninterrupted CMM operations without compromising accuracy.
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 system facilitates rapid and precise positioning of workpieces, reducing the risk of damage and increasing the efficiency of CMM inspections by allowing continuous measurement operations with improved safety and accuracy.
Implementation Method 1
at least one movable platform disposed onto the stationary platform; transport means adapted to assist in conveying the movable platform to the measurement area
Data Source
AI summary
A system and method for accurately positioning workpieces to permit uninterrupted coordinate measurements using a CMM is disclosed. The system comprises at least one movable platform adapted for moving on a stationary platform, fixtures for affixing workpieces to the movable platform, and locator stops and locators for affixing the movable platform in a predetermined measurement area on the stationary platform. An air jet injected into the bottom of the movable platform facilitates conveying the platform to the measurement area. The method comprises mounting one or more workpieces in a predetermined position on the movable platform fixture and positioning the movable platform against locator stops on the stationary platform. A second workpiece may be mounted on the fixtures of a second movable platform while the CMM measurements are in progress. This procedure may be repeated for successive workpieces and enables a near assembly line process for measuring workpiece coordinates.