Multi-Station Workpiece Measurement for Production Trend Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automated factory manufacturing systems face inefficiencies in production scheduling and inspection due to the constraint of inspecting workpieces in the same order they are produced, leading to inefficient usage of production and inspection resources and inability to detect trends in dimension changes over time.
Innovation Solution
A method that records the production order of workpieces and measures them at multiple inspection stations, analyzing the results to detect trends and adjust production processes, allowing for flexible scheduling and efficient use of resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If workpieces are inspected in the same order they are produced at a single inspection station, then the inspection process is simple to manage, but production scheduling efficiency deteriorates and resource utilization is poor
Solution Approach 1:
The inspection process is segmented across multiple inspection stations rather than using a single station. Workpieces can be routed to different inspection stations based on production scheduling requirements, allowing parallel inspection operations and improving overall system productivity while maintaining manageable complexity through modular architecture
Solution Approach 2:
The system transitions from a single-dimensional inspection sequence (one station, one order) to a multi-dimensional inspection framework where workpieces can be inspected at different stations based on multiple criteria including production order, inspection priority, and resource availability. This adds scheduling flexibility without significantly increasing operational complexity
2Ease of operation
If workpieces are inspected in the same order they are produced, then production scheduling is straightforward, but the ability to detect trends in dimension changes over time deteriorates
Solution Approach 1:
The system implements feedback mechanisms where measurement data from multiple inspection stations is collected, stored, and analyzed to detect trends in dimension changes over time. This feedback loop enables automatic detection of tool wear, machine drift, and other process variations while maintaining flexible production scheduling through independent data collection from workpiece identifiers
Solution Approach 2:
The system replaces the mechanical constraint of sequential inspection ordering with an information-based tracking system using workpiece identifiers and digital data collection. This allows measurement data to be automatically associated with the correct workpiece and production sequence without requiring physical inspection in production order, enabling trend detection while maintaining scheduling flexibility
3Productivity
If multiple inspection stations are used to improve resource utilization, then productivity increases, but the complexity of coordinating inspections across stations increases
Solution Approach 1:
Multiple inspection stations are designed with universal functionality to inspect the same features on workpieces, allowing any station to handle any workpiece regardless of production sequence. This multi-functionality enables flexible resource allocation and load balancing across stations while maintaining consistent measurement capabilities, reducing coordination complexity through standardized interfaces and protocols
Data Source
AI summary
In a workpiece production method a plurality of nominally similar workpieces are produced in a production process on one production machine. The order or time of production of some of the workpieces on the production machine is recorded. Some of the workpieces recorded are measured at two or more inspection stations. Dimensions or points of one workpiece are measured at one of the inspection stations, and corresponding dimensions or points of another of the workpieces are measured at another of the inspection stations. The results of the measurements of corresponding dimensions or points made at the two or more inspection stations are analysed together, taking account of the order or time of production of the workpieces. An output signal is produced based on the analysing of the results together. The output signal indicates performance of the production machine or of one or more of the inspection stations.