Milling Cutter Insert Positioning for Flat Surfaces Across Diameters

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Solution Overview

Problem

Current milling technologies face challenges in producing flat surfaces due to the need for specific cutting inserts with arcuate profiles, leading to inventory management complexities and installation errors, as well as the inability to achieve flat surfaces across varying diameters.

Innovation Solution

A milling kit with housing seatings configured to position cutting edges inclined at specific angles, allowing the same type of inserts to be used across different diameter milling bodies, simplifying inventory and installation while ensuring flat surface production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If different inserts with specific cutting profiles are used for each diameter of the milling body, then flat surfaces can be obtained, but inventory complexity and management difficulty increase significantly

Engineering Contradiction:
Improveflat surface qualityVSAvoidinsert inventory variety
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent makes the cutting insert universal by giving it a flat cutting profile that can be used on milling bodies of different diameters. The insert's flat profile works in conjunction with the inclined housing seatings to produce flat surfaces regardless of the milling body diameter, eliminating the need for diameter-specific inserts.

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

Solution Approach 2:

The patent changes the cutting profile parameter from arcuate to flat, and combines this with inclined housing seatings at specific angles. This parameter change allows the same insert geometry to function correctly across different milling body diameters while still producing flat surfaces.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If standardized inserts with arcuate cutting edges are used, then insert availability and interchangeability improve, but the ability to produce flat surfaces is lost

Engineering Contradiction:
Improveinsert interchangeabilityVSAvoidsurface flatness
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent changes the cutting edge profile from arcuate to flat, fundamentally altering the cutting geometry. This parameter change enables the insert to produce flat surfaces while maintaining interchangeability, as the flat-profiled inserts can be used on any milling body with the appropriate inclined housing seatings.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If multiple types of inserts are stored for different diameters, then precise flat surfaces can be obtained for each diameter, but storage space and management time increase

Engineering Contradiction:
Improveflat surface qualityVSAvoidinsert inventory quantity
Core Design Contradiction:
Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The flat-profiled cutting insert is designed to be universal across different milling body diameters. By combining the flat cutting profile with inclined housing seatings, the same insert type can be used on various diameters, dramatically reducing the quantity of different insert types that need to be inventoried and stored.

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

4Productivity

If inserts are positioned at an angle to reduce cutting effort, then cutting efficiency improves, but achieving flat surfaces becomes impossible with standardized inserts

Engineering Contradiction:
Improvecutting efficiencyVSAvoidsurface flatness
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent combines two parameter changes: (1) positioning the housing seatings at an inclination angle to reduce cutting effort and improve efficiency, and (2) giving the cutting insert a flat profile instead of arcuate. The combination of these parameter changes allows both inclined positioning for efficiency and flat surface production to be achieved simultaneously.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3873709B1Kit for milling semi-worked pieces and method
Publication Date: 2023.09.06 METAL WORLD
  • EP3873709B1 patent drawingFigure 1~2
  • EP3873709B1 patent drawingFigure 3~6
  • EP3873709B1 patent drawingFigure 7~9

AI summary

Kit for milling semi-worked pieces comprising a first milling cutter (11) having a first diameter (D1) and provided with at least first housing seatings (18) to receive respective inserts (16) having a cutting edge (17) with an arcuate profile. The first housing seatings (18) are configured to position said cutting edges (17) of the inserts (16) inclined by a first angle (α1) with respect to a first axis of rotation (X1) of the first milling cutter (11). The kit also comprises a second milling cutter (12) having a second diameter (D2) and provided with second housing seatings (26).