Multi-Tool Milling Assembly for Stable Deep-Cut Machining
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Solution Overview
Problem
Existing milling tools are not suitable for high-speed and large-depth of cut operations, resulting in unsatisfactory machining results due to vibration and chatter, and limited flexibility in tool usage.
Innovation Solution
A cutting assembly with a tool holder and multiple milling cutting tools, each with a shank arranged in tool mounting recesses that allow for radial and axial extension, featuring interlocking features for precise positioning and clamping, enabling robust and vibration-free machining with efficient chip evacuation and flexibility in tool geometry and holder compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional milling tools with centrally mounted cutting inserts are used, then the tool structure is simple and easy to manufacture, but the tool produces vibration and chatter during high-speed and large-depth of cut operations
Solution Approach 1:
The cutting tool is divided into multiple independent cutting elements (first cutting tool and second cutting tool) mounted at different radial positions on the tool holder. Each cutting tool has its own cutting portion with peripheral cutting edges, allowing the tool to perform complex milling operations with multiple cutting actions simultaneously, reducing vibration and chatter during high-speed and large-depth of cut operations
2Manufacturing precision
If multiple cutting tools are mounted at different radial positions on the tool holder, then vibration and chatter are reduced during high-speed milling, but the tool holder design becomes more complex
Solution Approach 1:
The invention transitions from conventional single-axis cutting tools to multi-axis cutting tools by mounting cutting tools at different radial positions (different distances from the tool holder central axis). This dimensional arrangement allows cutting portions to engage the workpiece at multiple radial locations simultaneously, improving surface quality and reducing vibration during high-speed milling operations
3Productivity
If cutting tools are mounted with openings in the front end surface spaced apart from the central axis, then chip evacuation is improved, but the tool mounting design becomes more complex
Solution Approach 1:
The tool holder is designed with different local structures at different positions: tool mounting recesses with openings in the front end surface spaced apart from the central axis. This local structural differentiation allows chips to be evacuated efficiently through the openings while maintaining the overall structural integrity of the tool holder. The openings are strategically positioned to facilitate chip flow paths without requiring complex overall tool holder redesign
4Adaptability or versatility
If conventional single-tool holders are used, then the tool holder design is simple, but flexibility in tool usage and holder compatibility is limited
Solution Approach 1:
The tool holder is designed with multiple tool mounting recesses that can accommodate different types of cutting tools (first cutting tool and second cutting tool) with different shank configurations. The standardized recess design allows the same tool holder to be used for various milling operations and can be compatible with different tool types, enhancing versatility and flexibility without requiring multiple specialized tool holders
Data Source
Figure 1~3
Figure 4~6
AI summary
The invention relates to a cutting assembly for milling. At least two milling cutting tools (3) with shanks (10) are arranged in a rotatable tool holder (2) at a distance from the central axis (7) of the tool holder (2), such that an operational region of a cutting portion (8) of each cutting tool (3) is primarily facing outwards, in a radial direction, from the tool holder (2) central axis (7).