Adjustable Fly-Cutter Geometry for Tool Life and Surface Finish

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Solution Overview

Problem

Existing milling machine fly-cutters lack the ability to simultaneously adjust the geometric angles of cutting tools, such as rake angle, relief angle, tool cutting edge angle, minor cutting edge angle, and tool cutting edge inclination angle, which limits their cutting performance and compatibility with different cutter handles.

Innovation Solution

A milling machine fly-cutter with adjustable cutting-tool geometric angles is designed, featuring a fly-cutter plate body with combination grooves and adjusting assemblies that include blocks for each geometric angle, allowing for simultaneous adjustment and compatibility with various cutter handle specifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the cutting tool is installed on the fly-cutter plate with a fixed geometric angle, then the structure is simple and easy to manufacture, but the cutting performance cannot be fully optimized and the tool life is reduced

Engineering Contradiction:
Improveease of manufactureVSAvoidtool life
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent applies the dynamics principle by making the cutting tool geometric angle adjustable rather than fixed. The adjusting blocks enable dynamic modification of rake angle, relief angle, tool cutting edge angle, minor cutting edge angle, and tool cutting edge inclination angle according to different cutting conditions, thereby optimizing cutting performance and extending tool life while maintaining manufacturing simplicity through modular components.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by providing multiple adjusting blocks that modify various geometric parameters of the cutting tool. Each adjusting block changes specific parameters (rake angle, relief angle, etc.) to adapt to different cutting requirements, resolving the contradiction between fixed simple structure and optimized cutting performance for extended tool life.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If the fly-cutter plate is designed with fixed geometric angles, then the device complexity is low, but the adaptability to different cutting conditions and workpieces is limited

Engineering Contradiction:
Improvedevice complexityVSAvoidadaptability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent applies segmentation by dividing the adjusting mechanism into multiple independent adjusting blocks, each responsible for a specific geometric angle (rake angle, relief angle, tool cutting edge angle, etc.). This modular segmentation allows flexible adaptation to different cutting conditions while keeping each individual component relatively simple, thus balancing device complexity with adaptability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements universality through the fly-cutter plate structure that can accommodate multiple types of cutting tools with different geometric requirements. The multiple adjusting blocks provide multi-functionality, enabling the same fly-cutter plate to adapt to various cutting conditions, workpiece materials, and tool types, thereby enhancing versatility without proportionally increasing overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If multiple adjusting blocks are added to the fly-cutter plate, then the cutting performance can be fully optimized, but the device complexity increases

Engineering Contradiction:
ImproveproductivityVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by implementing adjustable geometric angles that can be modified during operation to optimize cutting performance for different materials and conditions. This dynamic adjustability improves productivity by enabling optimal cutting parameters without requiring multiple specialized fly-cutter plates, justifying the increased device complexity through enhanced operational flexibility and efficiency.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes through multiple adjusting blocks that modify various geometric parameters of the cutting tool. These parameter changes enable optimization of cutting performance across different working conditions, directly improving productivity by reducing tool wear, extending tool life, and maintaining consistent cutting quality, thereby justifying the additional device complexity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12202060B2Milling machine fly-cutter with adjustable cutting-tool geometric angle and milling machine
Publication Date: 2025.01.21 SHANDONG UNIV
  • US12202060B2 patent drawing
  • US12202060B2 patent drawing
  • US12202060B2 patent drawing

AI summary

A milling machine fly-cutter with adjustable cutting-tool geometric angle and milling machine includes a fly-cutter plate body, a plurality of combination grooves are evenly set in the circumferential direction of the fly-cutter plate body, and adjusting assemblies are mounted in the combination grooves. Wherein, the adjusting assemblies include an adjusting block for rake angle and relief angle, an adjusting block for tool cutting edge angle and minor cutting edge angle, an adjusting block for tool cutting edge inclination angle. A first side of the adjusting block is attached with a cutter handle, and a second side is connected with the adjusting block for rake angle and relief angle by the adjusting block for tool cutting edge angle and minor cutting edge angle. The milling machine fly-cutter realizes adjustment of the geometric angles of cutting tool, and is able to adapt to cutter handles of a variety of different specifications.