Coupling Part Annular Groove Machining Without Deburring

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Solution Overview

Problem

Current methods for producing rotationally symmetrical parts, such as coupling parts, require additional manufacturing steps and deburring processes, which increase effort and complexity, especially when creating annular grooves and machining surfaces.

Innovation Solution

A coupling part design featuring a rotationally symmetrical area with an annular groove on its radially outer surface, where the groove is machined during turning, allowing for simultaneous production of the groove and machining surface without the need for separate deburring, and incorporating a claw coupling with an axially protruding area to facilitate oil management and detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If an annular groove is created after initial turning and surface machining, then the groove can be produced with precision, but additional manufacturing steps and deburring are required

Engineering Contradiction:
Improveannular groove precisionVSAvoidmanufacturing process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The annular groove is created during the initial turning operation before surface machining, rather than after. This preliminary action eliminates the need for subsequent deburring steps and reduces manufacturing process complexity while maintaining groove precision through proper tool setup and cutting parameters

Inventive Principle:
Principle #10Preliminary action

2Ease of manufacture

If an annular groove is machined into the coupling part during turning, then deburring is eliminated, but the groove must be created in the same setup as the machining surface

Engineering Contradiction:
Improvedeburring eliminationVSAvoidsetup integration
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The annular groove creation and machining surface production are merged into a single turning operation setup. The groove is machined concentrically with the surface in the same clamping and tool configuration, eliminating deburring while avoiding the need for separate setups or operations

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If the machining surface is produced by milling, then a flat surface with normal direction parallel to the axis of symmetry is achieved, but run-out edges and burr formation occur

Engineering Contradiction:
Improvemachining surface flatnessVSAvoidburr formation
Core Design Contradiction:
Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The annular groove is created during the initial turning operation before surface machining, rather than after. This preliminary action eliminates the need for subsequent deburring steps and reduces manufacturing process complexity while maintaining groove precision through proper tool setup and cutting parameters

Inventive Principle:
Principle #10Preliminary action

4Manufacturing precision

If multiple manufacturing steps are used for creating annular grooves and machining surfaces, then each feature can be optimized, but productivity decreases

Engineering Contradiction:
Improvefeature optimizationVSAvoidmanufacturing cycle time
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The annular groove creation and machining surface production are merged into a single turning operation setup. The groove is machined concentrically with the surface in the same clamping and tool configuration, eliminating deburring while avoiding the need for separate setups or operations

Inventive Principle:
Principle #5Merging (Combining)

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 simplifies the production process by integrating annular groove creation into the turning operation, reducing the need for deburring and enabling efficient oil management through the annular groove's role as a throwing edge for lubricating oil, while also allowing for the detection of oil leaks.

Implementation Method 1

is then flung off the annular groove by the centrifugal force exerted on the lubricating oil by the coupling component, which rotates during operation

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP3810945B1Part with cylindrical part having a face perpendicular to the axis and parts extending axially therefrom and a methof of making the part
Publication Date: 2022.07.13 SEW EURODRIVE GMBH & CO KG
  • EP3810945B1 patent drawingFigure 1
  • EP3810945B1 patent drawingFigure 2
  • EP3810945B1 patent drawingFigure 3

AI summary

A part comprising a rotationally symmetrical region and a machining surface, and a method for producing said part from a raw component, wherein: the machining surface is level; the normal direction of the machining surface runs parallel to the axis of symmetry, in particular the axis of rotation; the part has an annular groove running around its circumference, in particular with respect to the axis of symmetry, said groove being incomplete, in particular removed down to the groove base of the annular groove, in a circumferential angle region that is covered by the machining surface, and being complete in a peripheral angle region that is not covered by the machining surface; and in particular wherein the machining surface adjoins the annular groove and/or leads into the annular groove.