Segmented Milling Cutter Blades for Complex Profile Processing
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Solution Overview
Problem
Conventional milling cutters with one-piece blades face challenges in efficiently processing complex profiles on workpieces due to increased material usage, instability, and higher cutting resistance, which can lead to blade wear and reduced lifespan.
Innovation Solution
A milling cutter design featuring multiple, alternating blades with separate cutting edges and chip grooves on blade supports, allowing for processing of workpieces in sections with reduced material usage and improved cooling, thereby enhancing stability and extending tool lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a one-piece copying blade is used to process complex profiles, then the blade can maintain structural integrity, but material usage increases and cutting resistance rises leading to blade wear
Solution Approach 1:
The blade is divided into multiple segments or teeth around the periphery of the milling cutter, rather than using a single one-piece copying blade. This segmentation allows each tooth to be smaller and lighter, reducing material usage and cutting resistance while maintaining overall structural integrity through the distributed configuration of multiple teeth that work in sequence.
2Manufacturing precision
If a one-piece copying blade is used, then the profile can be accurately copied, but cutting resistance increases and processing efficiency decreases
Solution Approach 1:
The copying blade profile is segmented into multiple discrete teeth arranged around the cutter periphery. Each tooth contributes to forming the final profile through sequential cutting actions, which reduces cutting resistance and improves material removal efficiency while maintaining profile accuracy through the cumulative effect of all teeth.
Solution Approach 2:
The multiple teeth are arranged to provide continuous cutting action as the cutter rotates, with each tooth engaging the workpiece in sequence. This continuous engagement maintains steady material removal and profile formation without interruption, improving processing efficiency while preserving manufacturing precision.
3Device complexity
If a one-piece copying blade is used, then the structure is simple, but chip removal becomes difficult and cooling is insufficient
Solution Approach 1:
The blade structure is segmented into multiple teeth with spaces between them, creating natural chip evacuation pathways. This segmentation allows chips to be easily removed from the cutting zone between the teeth, preventing chip accumulation and associated overheating problems while maintaining relatively simple overall structure.
Solution Approach 2:
The design extracts or removes the harmful accumulation of chips by providing open spaces between the segmented teeth. This allows chips to be naturally ejected from the cutting zone during rotation, eliminating the chip removal problem without adding complex chip evacuation mechanisms.
4Ease of manufacture
If a one-piece copying blade is used, then the blade can be manufactured simply, but tool lifespan is reduced due to increased wear
Solution Approach 1:
The blade is manufactured as multiple smaller teeth distributed around the cutter periphery. This segmentation reduces the size and complexity of each individual tooth, making manufacturing simpler while also reducing the cutting resistance and wear on each tooth, thereby extending overall tool lifespan through distributed wear across multiple teeth.
Data Source
AI summary
A milling cutter is configured to process an edge of a workpiece to a required profile. The required profile includes a first portion and a second portion coupled to the first portion. The milling cutter includes a shank having a central axis, at least one first cutting edge, and at least one second cutting edge. The first cutting edge is configured to rotate around the central axis of the shank along a first rotation path to process the first portion of the predetermined profile, and the second cutting edge is configured to rotate around the central axis of the shank along a second rotation path to process the second portion of the predetermined profile. The first rotation path is different from, and connected to the second rotation path.