Disk Cutting Body Insert Layout for Stable High-Feed Slotting
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Solution Overview
Problem
Current rotary cutting tools with disk-shaped cutting bodies and indexable inserts lack stability and efficiency in slotting operations, particularly in maintaining high feed rates and retaining inserts effectively.
Innovation Solution
A rotary cutting tool design featuring a disk-shaped cutting body with identical, circumferentially spaced insert receiving pockets and identical indexable cutting inserts, where each insert is securely retained with a clamping screw system and designed for easy indexing to maintain cutting edge effectiveness, utilizing a hard material for inserts and a less hard material for the cutting body to ensure stability and high feed rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a disk-shaped cutting body with multiple insert receiving pockets is used, then productivity is improved through multiple cutting inserts, but insert stability is insufficient leading to poor retention
Solution Approach 1:
The cutting tool is segmented into multiple identical insert receiving pockets circumferentially spaced on the disk-shaped cutting body, allowing multiple cutting inserts to operate simultaneously. Each pocket is independently designed with clamping screws to secure individual inserts, enabling high productivity while maintaining insert stability through dedicated retention mechanisms for each insert position.
2Ease of operation
If indexable cutting inserts are used, then ease of operation is improved through insert replacement, but insert retention stability is insufficient
Solution Approach 1:
The insert receiving pockets are pre-configured with clamping screws and retention features during tool manufacturing. The identical pockets are designed in advance to accommodate indexable cutting inserts with proper positioning and retention mechanisms, allowing operators to easily replace inserts while maintaining stable retention through the pre-established clamping system.
3Productivity
If high feed rates are pursued, then productivity is improved, but cutting edge stability becomes insufficient leading to reduced precision
Solution Approach 1:
The cutting tool employs a composite construction where the disk-shaped cutting body is made from a less hard material providing structural stability and vibration damping, while the cutting inserts are made from hard materials (such as ceramic or cubic boron nitride) that maintain cutting edge stability at high feed rates. This material composite approach enables high productivity through increased feed rates while preserving manufacturing precision through the stability of the hard cutting edges supported by the damped cutting body.
Data Source
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AI summary
A rotary cutting tool having a disk-shaped cutting body with a plurality of identical insert receiving pockets, and an equal number of indexable cutting inserts removably retained therein, having opposing upper and lower surfaces and opposing first and second insert end surfaces. First and second cutting edges are formed at the intersection of the upper surface and the first and second insert end surfaces, respectively. Circumferentially adjacent cutting inserts have a different one of their first and second insert end surfaces in contact with an insert receiving pocket back wall. First and second planes are equidistantly offset from opposite sides of the cutting body, the first plane only intersecting the first cutting edge of every circumferentially alternate cutting insert and none of the second cutting edges, and the second plane only intersecting the second cutting edge of every circumferentially alternate cutting insert and none of the first cutting edges.