Detachable Reaming Head With Chip Corridor for Reliable Chip Evacuation
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Solution Overview
Problem
Current reaming tools are expensive to manufacture and have complex shapes, leading to increased adjustment efforts and risks of incorrect dimensional tolerances when replacing cutting edges, and they lack efficient chip removal mechanisms, especially in continuous processing.
Innovation Solution
A reaming tool with a detachable cutting head featuring a chip corridor designed with at least three guiding surfaces that forms a closed system to reliably transport chips away from the machining area, allowing for easy replacement and maintenance, and manufactured using additive processes for cost-effectiveness and complex geometry creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If cutting edges are replaced on complex-shaped reaming tools, then the tool can be reused, but adjustment efforts increase and dimensional tolerance accuracy decreases
Solution Approach 1:
The reaming tool is divided into a tool holder and a separate cutting head that can be independently replaced. The cutting head contains the cutting edges and chip corridor, and can be detached and replaced without replacing the entire tool or performing complex adjustments, thus maintaining dimensional tolerance while improving ease of repair.
Solution Approach 2:
The cutting head is extracted as a separate replaceable component from the tool holder. This allows the cutting edges to be replaced by simply changing the cutting head rather than adjusting existing cutting edges, eliminating adjustment efforts and preserving manufacturing precision.
2Productivity
If traditional chip removal methods are used, then the tool structure remains simple, but chip removal efficiency is insufficient especially in continuous processing
Solution Approach 1:
The chip corridor is designed as a three-dimensional closed structure with guiding surfaces that actively direct chips away from the cutting zone. This spatial arrangement creates efficient chip evacuation paths without adding complex external mechanisms, improving productivity while maintaining reasonable structural complexity.
3Ease of manufacture
If additive manufacturing processes are used, then manufacturing cost decreases and complex geometry is enabled, but manufacturing precision may be affected
Solution Approach 1:
The tool is segmented into a tool holder (manufactured by conventional methods for high precision) and a cutting head (manufactured by additive processes for cost-effectiveness and complex geometry). This allows each component to be optimized by the most suitable manufacturing method, achieving both cost reduction and maintained precision.
Data Source
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AI summary
The invention relates to a cutting tool (10), more particularly for producing or reworking a reamed hole, comprising a clamping shank (14) and a tool carrier (12) with a cutting head (22) and at least one cutter (18) arranged on an axial cutting head end (24), wherein the tool carrier (12) comprises a chip receiving space (26) which is designed to receive material chips from a component to be machined, and which is bounded by a chip removal surface (32) adjoining the cutter (18) and a chip guiding surface (34) oriented at an angle, more particularly at a right angle, to said chip removal surface (32). Said chip guiding surface (34) extends radially outwards, more particularly in a concave or angled manner, from the cutting head end (24) in the direction of the clamping shank (14), wherein the cutting head (22) comprises a chip corridor (50) adjoining the cutter (18), which chip corridor (50) is designed to receive material chips from a component to be machined, and which comprises a radially extending chip gap (44) and at least a first, a second and a third corridor surface (46, 48, 54) extending from the cutting head end (24) in the axial direction, wherein the first corridor surface (46) comprises at least one partial section of the chip removal surface (32), wherein the second corridor surface (48) extends at an angle or curved in the axial direction to expand the chip corridor (50) from the chip gap (44) in the direction of the chip receiving space (26), and wherein the third corridor surface (54) at least partially closes and bounds the front face of the chip corridor (50) on a circumferential side (66) of the cutting head (22). The invention proposes that the cutting head is formed as a separate component and is releasably or permanently attached to a main body (16) of the tool carrier (12), and that the chip corridor (50) is formed substantially within the cutting head. The invention further relates to a corresponding cutting head.