Press Polishing Tool for Pipe Inner Surface Smoothing

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Solution Overview

Problem

The high effort involved in polishing metal parts, especially those with small manufacturing tolerances and difficult-to-access surfaces like inner surfaces of pipes, is a challenge in existing press polishing technologies.

Innovation Solution

A press polishing tool with a plate-shaped body and a press-polishing element, such as diamond or cubic boron nitride, attached to its side surface, designed to fit into indexable insert tool holders, reducing the need for specialized polishing equipment and allowing use of existing machining tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional polishing processes are used to achieve small manufacturing tolerances on metal parts, then surface quality is improved, but the effort and time required increase significantly

Engineering Contradiction:

Improvesurface qualityVSAvoidpolishing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent replaces traditional mechanical polishing processes with press polishing, which uses localized plastic deformation through pressing forces. This substitution eliminates the need for prolonged mechanical contact and material removal, achieving surface smoothing in a single pressing action rather than extended polishing operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention changes the fundamental parameter of surface treatment from material removal (polishing) to plastic deformation (press polishing). By applying controlled pressing forces that plastically deform and level surface elevations, the process achieves equivalent or superior surface quality with dramatically reduced time investment.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If specialized polishing equipment is used to access difficult-to-reach surfaces, then polishing capability is improved, but equipment cost and complexity increase

Engineering Contradiction:

Improveaccessibility to difficult surfacesVSAvoidequipment complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The press polishing tool is designed with a universal plate-shaped body that can be adapted to various tool holders and machining centers. The simple plate structure with attachable press-polishing elements allows the same basic tool to access different difficult-to-reach surfaces by changing the pressing direction or tool orientation, eliminating the need for specialized polishing equipment for each application.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Instead of using complex polishing equipment to reach difficult surfaces, the invention inverts the approach by using simple press tools that can be directed from various angles. The press-polishing element applies force perpendicular to the surface, allowing access to inner surfaces of pipes and other hard-to-reach areas by approaching from the accessible side rather than trying to polish from the difficult side.

Inventive Principle:

Principle #13The other way round (Inversion)

3Manufacturing precision

If conventional polishing methods are used on inner surfaces of pipes, then surface smoothing is achieved, but the effort and cost increase significantly

Engineering Contradiction:

Improvesurface smoothingVSAvoidmanufacturing effort

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent replaces conventional mechanical polishing with press polishing for pipe inner surfaces. By inserting a press tool into the pipe and applying localized pressing forces to the inner surface, the process achieves surface smoothing without the need for complex polishing mechanisms, reducing both manufacturing effort and cost while maintaining surface quality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 solution reduces the effort and cost associated with polishing metal parts by leveraging existing machining infrastructure and enhancing the efficiency of surface smoothing on metal parts with small tolerances and hard-to-reach areas.

Implementation Method 1

elevations on the surface of a workpiece to be machined are plastically or partially plastically deformed and thus leveled

Methodology Applied

Scientific EffectPlastic deformation: Plasticity

Implementation Method 2

A press polishing tool with a plate-shaped body (1) and a press-polishing element (2), which can consist, for example, of diamond or cubic boron nitride

Methodology Applied

Scientific EffectAbrasion: Abrasion

Data Source

PatentEP3127656B1Press polishing tool and method for producing a press polishing tool

Publication Date: 2018.06.13 MOSSNER GMBH DIAMANTWERKZEUGFAB

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AI summary

The invention relates to a press polishing tool for insertion into a tool holder suitable for an indexable insert, comprising a body (1) in the form of a plate having a top surface (10), a bottom surface, and side surfaces (11, 11a) connecting the top surface (10) to the bottom surface, and a press polishing element (2) arranged on one of the side surfaces (11a). The invention also relates to a method for manufacturing a press polishing tool.