Machine Tool Honing with Merged Pre-Machining and Oscillating Motion

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Solution Overview

Problem

Machine tools face challenges in achieving high precision and effective machining of workpieces, particularly in maintaining tight tolerances while efficiently processing materials like motor housings, where existing technologies struggle to combine pre-machining and honing operations effectively.

Innovation Solution

The machine tool design allows for both pre-machining and honing of workpieces using the same tool carrier, with separate or shared tool carriers, and incorporates a cooling lubricant system, oscillating movements, and standardized connections to enable precise and efficient machining, including the use of honing tools with movable honing elements and compressed air interfaces for dynamic pressure measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If separate machine tools are used for pre-machining and honing, then each operation can be optimized independently, but the workpiece must be re-clamped between operations which reduces positioning accuracy and increases production time

Engineering Contradiction:
Improvepositioning accuracyVSAvoidproduction time
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent combines pre-machining and honing operations into a single machine tool with a common tool carrier that can accommodate both pre-machining tools and honing tools. The workpiece remains clamped in the same fixture throughout both operations, eliminating re-clamping errors and reducing production time while maintaining high positioning accuracy.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tool carrier is designed as a universal platform that can hold and position both pre-machining tools and honing tools with the same clamping system. This multi-functional design allows the workpiece to be processed by different tool types without changing the workpiece carrier or clamping arrangement, ensuring consistent positioning accuracy across operations.

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

2Loss of time

If a common tool carrier is used for both pre-machining and honing tools, then tool change time is reduced and positioning accuracy is maintained, but the tool carrier design becomes more complex

Engineering Contradiction:
Improvetool change timeVSAvoidtool carrier design
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The tool carrier incorporates a universal clamping system with standardized connection elements that can accommodate both pre-machining tools and honing tools. This design uses common clamping mechanisms, positioning features, and interface standards that simplify the overall structure compared to having separate specialized carriers, while enabling quick tool changes and maintaining positioning accuracy.

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

3Adaptability or versatility

If honing elements are made movable relative to the element holder, then the honing tool can adapt to workpiece variations, but the tool structure becomes more complex

Engineering Contradiction:
Improveadaptation to workpiece variationsVSAvoidtool structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The honing elements are designed to be movable relative to the element holder through simple spring-loaded or gravity-assisted mechanisms that allow automatic adjustment to workpiece variations. This dynamic capability provides adaptability without requiring complex control systems or multiple adjustable components, maintaining relatively simple tool structure while achieving versatility.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach enables high-precision and cost-effective machining by allowing continuous clamping of workpieces during both pre-machining and honing, utilizing cooling lubricants and oscillating movements to produce characteristic honing surface structures, thereby improving machining accuracy and efficiency.

Implementation Method 1

the honing element can be advanced by means of the cooling lubricant in the direction of a workpiece surface to be machined

Methodology Applied
Scientific EffectFluid pressure: Pressure Increase

Implementation Method 2

By superimposing a rotary movement of the tool and an oscillating movement of the tool and/or the workpiece, a surface structure that is characteristic of honing processing and has processing tracks that cross one another can be produced

Methodology Applied
Scientific EffectMechanical vibration: Vibration

Data Source

PatentEP2188087B1Machine tool with honing tool
Publication Date: 2011.10.19 MAG IAS GMBH
  • EP2188087B1 patent drawingFigure 1
  • EP2188087B1 patent drawingFigure 2
  • EP2188087B1 patent drawingFigure 3

AI summary

In order to improve a machine tool, which comprises at least one workpiece carrier (20) and at least one tool carrier (14, 16) to which a tool can be releasably connected, in such a way that it allows a workpiece to be machined with high precision and inexpensively, the invention proposes that at least one pre-machining tool (34) for the cutting pre-machining of a workpiece can be releasably connected to at least one tool carrier and that at least one honing tool (36) for honing a pre-machined workpiece can be releasably connected to at least one tool carrier.