Can Opener Blade Depth Control and Friction Reduction
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Solution Overview
Problem
Conventional can openers often cause wire drawing when cutting through can bodies, resulting in a less smooth mouth and increased friction, which shortens the device's lifespan and increases noise.
Innovation Solution
A can opener design featuring a bracket, pushing wheel, can opening knife, and knife shaft with limiting members to control the cutting process, reducing friction and preventing excessive blade insertion, while a power mechanism and rotating support member enhance efficiency and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the can opening knife directly contacts the bracket during cutting, then the cutting force is sufficient, but friction increases causing wire drawing and reduced lifespan
Solution Approach 1:
A gap is introduced between the can opening knife and the bracket, with the knife shaft serving as an intermediary support structure. The knife shaft includes a first limiting member that supports the can opening knife, preventing direct contact between the knife and bracket while maintaining cutting effectiveness through controlled blade insertion depth.
2Productivity
If the blade inserts deeply into the can body for effective cutting, then the cutting efficiency is improved, but wire drawing occurs and the mouth becomes rough
Solution Approach 1:
The blade insertion depth is precisely controlled by the second limiting member on the knife shaft, which limits the maximum depth the blade can penetrate into the can body. This parameter control ensures effective cutting while preventing excessive insertion that causes wire drawing and rough edges.
3Stability of the object's composition
If the can opening knife is fixed rigidly to the bracket, then the structural stability is improved, but friction increases and noise is generated
Solution Approach 1:
The can opening knife is designed to rotate relative to the bracket around a central axis, transforming the rigid fixed connection into a dynamic rotating connection. This rotation reduces friction and noise while the knife shaft with limiting members maintains structural stability and precise blade depth control during the cutting operation.
Data Source
AI summary
A can opener and a control method thereof. The can opener comprises a support, a pushing wheel, a can opening cutter, and a cutter shaft; the pushing wheel is rotatably provided on the support by taking a central shaft of the pushing wheel as the center; a first position limiting member is provided on the outer wall of the cutter shaft; the can opening cutter is rotatably sleeved on the cutter shaft and is located on the first position limiting member; a gap exists between the can opening cutter and the support; a cutter edge is provided on the peripheral wall of the can opening cutter; a second position limiting member spaced from the cutter edge is further provided on the peripheral wall of the can opening cutter close to a first end of the pushing wheel; and a gap is formed between the cutter edge and the pushing wheel.