Cylindrical Workpiece Trimming with Elastic Tilt Suppression
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Solution Overview
Problem
Conventional trimming devices for cylindrical workpieces often result in shape quality issues due to tilting during the cutting process, leading to uneven cut heights and potential steps.
Innovation Solution
A trimming device featuring a first trimming member with a cutting edge and a body portion, a second trimming member with a cutting edge, and a moving mechanism to adjust the position of these members. A guide member is placed in a gap between the body portion and the workpiece to suppress tilting and ensure precise cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the conventional trimming device cuts the opening edge of the cylindrical workpiece, then the workpiece is trimmed, but the bottom portion of the cylindrical workpiece slides and tilts, impairing shape quality
Solution Approach 1:
A guide member is introduced as an intermediary element between the trimming device and the cylindrical workpiece. The guide member contacts the outer surface of the workpiece and suppresses tilting during the trimming process, thereby maintaining shape quality without interfering with the cutting operation
Solution Approach 2:
The trimming device is divided into functionally independent components: trimming members for cutting and a guide member for stabilization. This segmentation allows the guide member to suppress tilting independently while the trimming members perform the cutting operation, resolving the contradiction between trimming function and workpiece stability
2Manufacturing precision
If the cylindrical workpiece is cut sequentially on each side, then all sides are trimmed, but tilting causes different cut heights and creates steps
Solution Approach 1:
The guide member acts as a mediator that maintains consistent positioning of the workpiece throughout sequential cutting operations on different sides, ensuring uniform cut heights by preventing tilting that would otherwise cause step formation
Solution Approach 2:
The guide member is positioned to contact and stabilize the workpiece before the trimming process begins, preventing tilting from occurring during sequential cutting operations, thereby ensuring uniform cut heights across all sides
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 solution effectively suppresses tilting of the cylindrical workpiece during trimming, maintaining shape quality and ensuring uniform cut heights across all sides.
Implementation Method 1
elastically deform when subject to a force in the second direction
Data Source
AI summary
To provide a trimming device with which it is possible to suppress the deterioration of shape quality after trimming a cylindrical workpiece. When trimming is performed by means of a core metal cutting edge (33f) and a tool cutting edge (31f) upon moving at least one of a core metal punch (33) and a trimming tool (31A), gaps (H1, H2) are formed between the core metal punch (33) and a workpiece (W). Damper mechanisms (100A, 100B) are arranged in the gaps (H1, H2). The damper mechanisms (100A, 100B) are arranged so as to abut on the workpiece (W) when trimming is performed by the core metal cutting edge (33f) and the tool cutting edge (31f), and are constituted so as to elastically deform when a force acts in a direction in which the trimming tool (31A) moves forward and backward.