Cylindrical Die Matching With Eddy Current Position Feedback
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Solution Overview
Problem
The conventional die matching process in thread and form rolling machinery is time-consuming, labor-intensive, and inefficient, requiring skilled operators and manual adjustments, especially in cylindrical and planetary machines, due to geometrical constraints.
Innovation Solution
A machine tool system with rotatable cylindrical dies and sensors, such as eddy current sensors, that automatically adjust the position of the dies using servo motors and mechanical linkages to match the dies continuously during operation, ensuring precise positioning and continuous production of threaded fasteners without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual die matching process is used, then skilled operators can adjust die positioning, but the process is time-consuming and reduces productivity
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an automated sensor-based positioning system. Sensors detect the position of reference features on dies, and a controller automatically adjusts die positioning, eliminating the need for manual mechanical adjustment while maintaining precision and significantly reducing time consumption.
Solution Approach 2:
The die matching system performs self-adjustment through automated sensing and positioning mechanisms. The system automatically detects die positions via sensors and makes necessary adjustments without requiring external human intervention, enabling the system to service itself during the matching process.
2Manufacturing precision
If multiple die and machine adjustments are made through trial and error, then acceptable finished products can be produced, but significant time is lost and operator skill is required
Solution Approach 1:
The patent implements a feedback mechanism where sensors continuously monitor the position of reference features on dies and provide real-time data to a controller. The controller uses this feedback to automatically adjust die positioning, eliminating the trial-and-error process and reducing the time required to achieve specification compliance.
Solution Approach 2:
The system performs preliminary positioning adjustments automatically before production begins. Reference features are pre-positioned on dies, and the automated system performs initial alignment and positioning adjustments prior to manufacturing, preventing the need for time-consuming mid-process corrections.
3Manufacturing precision
If skilled operators perform manual die matching, then precise positioning can be achieved, but skilled operators are not always readily available
Solution Approach 1:
The patent replaces the need for skilled human operators with an automated sensor-based system. The system uses sensors to detect reference features and a controller to perform positioning adjustments, substituting human expertise with automated intelligence and making the process independent of operator availability or skill level.
Solution Approach 2:
The die matching system performs self-adjustment through automated sensing and positioning mechanisms, making the process independent of human operators. The system detects die positions via sensors and makes necessary adjustments autonomously, eliminating dependency on skilled operator availability.
4Manufacturing precision
If conventional manual die matching is used, then die positioning can be adjusted, but the process is labor-intensive and diminishes productivity
Solution Approach 1:
The patent replaces complex manual adjustment procedures with a streamlined automated system. Sensors automatically detect die positions and a controller performs positioning adjustments, simplifying the overall process while maintaining precision and reducing labor intensity.
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
This solution enables efficient and precise automatic die matching, reducing the need for skilled operators and minimizing downtime, allowing for continuous production of identical finished workpieces with improved productivity and reduced die damage.
Implementation Method 1
A sensor senses the position of the reference feature and generates a matching signal... The sensor is preferably an eddy current sensor
Data Source
AI summary
A die matching system which is preferably implemented in die rolling machinery for fasteners employs witness or reference marks on each of the dies. An eddy current sensor is employed to sense the witness marks and to detect change in the relative position of the witness mark and hence the position of the rotatable dies. The change in position is then processed and a signal is transmitted to servo motors to change the relative position of the dies to compensate for the position changes continuously during the operation of the die rolling machinery. In one preferred form, the witness mark is in the form of a recess milled into the bottom end surface of the cylindrical die.