Floating Cutter Guide Structure for Precise Trim-Line Cutting
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Solution Overview
Problem
The existing floating cutter units in trimming press processing devices face challenges in achieving high positional accuracy during the cutting and dividing processes, which affects the quality of the cut surfaces along the trim lines.
Innovation Solution
A floating cutter unit with a guide member fixed to the holder set, which guides the movement of the floating cutter in the axial direction, enhancing its positional accuracy relative to the main trimming press upper die, and includes a spring for reaction force and a bush for smooth movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the floating cutter unit is moved up and down with high degree of accuracy, then the positional accuracy of the floating cutter unit relative to the main trimming press upper die is improved, but the device complexity increases due to the addition of guide member and holder set
Solution Approach 1:
The guide member acts as an intermediary component between the floating cutter unit and the holder set, providing a dedicated guiding surface that constrains the movement of the floating cutter unit. This intermediary structure enables precise axial movement while distributing the guidance function across separate components (guide member, holder set, bush), thereby achieving high positional accuracy without excessive complexity in any single component.
2Manufacturing precision
If the guide member is fixed to the holder set, then the positional accuracy of the floating cutter unit is improved, but the ease of manufacture deteriorates due to additional fixing requirements
Solution Approach 1:
The guidance system is segmented into distinct components: the guide member fixed to the holder set, and the bush fitted into the holder set. This segmentation allows each component to be manufactured and assembled separately, with the guide member providing guidance and the bush providing smooth movement. The segmentation reduces the manufacturing complexity of individual parts while achieving the overall goal of high positional accuracy through proper assembly.
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 configuration allows for precise up-and-down movement of the floating cutter unit, improving its positional accuracy and ensuring accurate cutting and dividing operations, resulting in higher quality cut surfaces.
Implementation Method 1
a spring, which is in contact with a tail end surface of the floating cutter and gives reaction force to the floating cutter
Implementation Method 2
a bush, which is fitted in the through-hole of the cutter holder and has an inner peripheral surface that comes in sliding contact with the outer peripheral surface of the floating cutter
Data Source
AI summary
The present invention increases the positional accuracy of a floating cutter unit with respect to a press upper die for main trimming. A floating cutter unit is provided with: a floating cutter for cutting scrap from a plate-shaped material, said floating cutter being attached to and used in a trimming press processing device that cuts scrap from a plate-shaped material along a trim line Tr and that additionally cuts scrap along a scrap cut line Sc; a spring that is brought into contact with the tail end surface of the floating cutter and with a holder set for holding the floating cutter so as to be movable in the direction of an axial center O, and that applies reaction force to the floating cutter; and a guide member that is attached to the holder set, brought into contact with the floating cutter, and used to guide movement in the direction of the axial center O.