Sliding Die Support Mechanism for Blanking Punch Centering
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Solution Overview
Problem
The existing die support mechanisms fail to maintain alignment between the center of the blanking punch and the punch hole during continuous operation, leading to potential off-axis failures due to thermal deformation, where the blanking punch may hit the opening edge of the punch hole.
Innovation Solution
A die support mechanism with a die holding member featuring a slit and a support base for horizontal sliding, including a guide portion within the ceiling hole to center the punch hole on the blanking punch, ensuring alignment through sliding contact and adjustable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed die support mechanism is used, then the structure is simple, but the alignment between blanking punch and punch hole deteriorates during continuous operation due to thermal deformation
Solution Approach 1:
The die holding member is designed to be horizontally slidable on the support base, transforming the fixed support into a dynamic adjustable support. This allows the die holding member to automatically adjust its position during continuous operation to compensate for thermal deformation, maintaining alignment between the blanking punch and punch hole while keeping the overall structure relatively simple
2Manufacturing precision
If a position adjustment mechanism is added to maintain alignment, then the alignment precision is improved, but the device complexity increases
Solution Approach 1:
The guide portion formed on the inner surface of the ceiling hole automatically guides the blanking punch during descent, causing the die holding member to self-adjust its position through sliding contact. This self-service mechanism maintains alignment precision without requiring external adjustment devices or complex control systems
Solution Approach 2:
The guide portion acts as an intermediary element between the blanking punch and the die holding member. Through sliding contact, it transmits the centering function from the punch to the die holding member, enabling precise alignment without direct mechanical connection or complex adjustment mechanisms
3Reliability
If the die holding member is made slidable to maintain centering, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The guide portion serves as a mediating structure that enables the die holding member to slide horizontally while maintaining proper centering. This intermediary component provides the necessary guidance and constraint to prevent off-axis failure without requiring complex support mechanisms
Solution Approach 2:
The guide portion is formed locally on the inner surface of the ceiling hole, providing sliding guidance only in the specific area where it is needed for centering. This localized approach improves reliability for preventing off-axis failure without adding complexity to the entire support mechanism
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 effectively prevents off-axis failures by maintaining alignment between the blanking punch and punch hole, enhancing the durability of the punch and die, and stabilizing the shape of the cylindrical workpiece generated.
Implementation Method 1
a guide portion formed on an inner surface of the ceiling hole and configured to come into sliding contact with the blanking punch and to slide the die holding member to a position where the punch hole is centered on the blanking punch
Data Source
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AI summary
[Problem] Provided is a technique for preventing a failure in which a blanking punch is pressed against an opening edge of a punch hole. [Solution] A die support mechanism 40 of the present disclosure includes a die holding member 41 through which a slit 41S passes, and a lower side of the die holding member 41 with respect to the slit 41S forms a die holding base 42 that holds a blanking die 32, and an upper side with respect to the slit 41S forms a ceiling portion 43 having a ceiling hole 44 concentric with a punch hole 32A of the blanking die 32. Then, the die holding member 41 is supported by the support base 50 in a horizontally slidable manner, and a guide portion of the ceiling hole 44 is in sliding contact with the blanking punch 31, whereby the die holding member 41 slides to a position where the punch hole 32A is centered on the blanking punch 31.