Guide Plate Recess Geometry for Longer-Lasting Cutting Blades
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Solution Overview
Problem
Existing electric cutting devices wear out the cutting blades locally due to consistent contact with the object being cut, necessitating frequent replacements.
Innovation Solution
The guide plates in the cutting device are designed with recesses that vary in width from the open end to the inner side, allowing the 'predetermined position' of blade contact to adjust based on the object's shape, reducing localized wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the recess has uniform width with linear portions parallel to each other, then the cutting blade always contacts the object at the same position, but this causes local wear of the cutting blade and requires frequent replacement
Solution Approach 1:
The recess width is made non-uniform, creating different local geometries along its length. Objects with different diameters naturally stop at different positions within the recess, causing the cutting blade to contact different portions of the object. This distributes wear across the entire cutting blade surface rather than concentrating it at one location, extending blade lifespan while maintaining precise positioning for each object type.
Solution Approach 2:
The recess width parameter is varied along its length rather than kept constant. This parameter change creates a gradient structure where the recess transitions from wider at the opening to narrower toward the bottom, enabling different object diameters to be positioned at different depths and thereby distributing cutting contact points across the blade surface.
2Duration of action of moving object
If the recess width decreases from open end to inner side, then different object shapes reach different positions, but this requires precise control of object placement
Solution Approach 1:
The non-uniform recess width creates a self-positioning mechanism where objects automatically find their correct placement position based on their own diameter. As an object is inserted into the recess, it naturally stops at the point where its diameter matches the recess width, eliminating the need for external positioning control or complex placement procedures by the operator.
Data Source
AI summary
An electric cutting device includes: a pair of cutting blades configured to clamp and cut an object; an electric motor configured to generate a driving force necessary for operating the cutting blades; and a guide plate formed with a recess configured to house the object in advance when the object is cut by the pair of cutting blades. The guide plate is formed such that a width of the recess decreases from an open end side toward an inner side of the recess.