Portable Die Cavity Groove Forming Machine
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Solution Overview
Problem
During metal stamping, blanks or slugs often pull out of the die cavity due to retraction of the punch, leading to inefficiencies and potential damage, as existing solutions require removing the die from the press to machine slug retention grooves.
Innovation Solution
A portable and transportable slug retention groove forming machine that adjusts along multiple axes to precisely machine elongate slug retention grooves in the die cavity sidewall using a rotary grinding bit, allowing for secure slug retention without removing the die from the stamping press.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional die modification approach is used to machine slug retention grooves, then the grooves can be precisely formed, but the die must be removed from the stamping press causing production downtime
Solution Approach 1:
A portable machining system with magnetic base attachment serves as an intermediary solution, allowing die modification tools to be brought to the die while it remains in the press, eliminating the need to remove the die for modification work
Solution Approach 2:
The machining system is designed to be movable and repositionable along the die surface using a magnetic base and positioning mechanisms, transforming a static die modification process into a dynamic, in-situ operation that can be performed at the exact location needed
2Loss of time
If a portable machining system is used to machine slug retention grooves in-situ, then production downtime is reduced, but the device complexity increases
Solution Approach 1:
The machining system is divided into separate functional modules: a magnetic base for attachment, a positioning carriage for movement control, and a machining head for groove formation. This segmentation allows each component to be optimized independently and simplifies the overall system architecture
Solution Approach 2:
The portable machining system is designed with universal features that allow it to work with different die sizes and configurations through adjustable positioning mechanisms and interchangeable machining tools, reducing the need for multiple specialized devices
3Manufacturing precision
If the die is removed from the press for modification, then accurate groove machining can be performed, but productivity decreases
Solution Approach 1:
The system allows for preliminary positioning and setup of the machining head while the die remains in the press, enabling accurate groove formation without interrupting the stamping production cycle
Solution Approach 2:
The portable machining system acts as an intermediary that bridges the need for precise die modification with the requirement for continuous production, allowing both goals to be achieved simultaneously through in-situ machining
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 machine effectively prevents slug pulling during stamping by creating acutely angled retention grooves, enhancing production efficiency and allowing on-site modification of dies within the stamping press, reducing downtime and increasing versatility.
Implementation Method 1
a machining head that utilizes a machining insert, preferably a rotary grinding bit, to modify the stamping die to provide slug retention by machining a slug retention groove in a die cavity defining sidewall
Data Source
AI summary
A portable and transportable die cavity modifying machine having a base carrying a carriage adjustable along one axis, e.g., a generally horizontal axis, and a machining head adjustable along another axis, e.g., a generally vertical axis, for modifying a die cavity of a stamping die in a manner that prevents blank or slug pulling during stamping press operation. The machine includes a grinder that can be pneumatically powered having a grinding bit used to precisely machine a slug retention groove in a die cavity defining surface (sidewall) of a die cavity formed in a stamping die. The machine has an angularly adjustable head carrying the grinder enabling adjustment of the angle of the groove relative to die cavity defining surface enabling the groove to be angled relative to the direction of a punch entering the die cavity during stamping.