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Module électif: Special Processes of FormingTechnologyMECA 2 Lecture 2: Spinning Processes^ 2017-18 Dr.-Ing. habil. Sami Chatti

L2 – Spinning Processes

Content^ L2 – Spinning Processes^ Introduction – spinning processes^ Sheet metal spinning^ Shear forming^ Flow forming

L2 – Spinning Processes

Film: Leico - Product presentation

L2 – Spinning Processes

Introduction – General aspects

Developed from sheet metal spinning process Localized forming zone Deformation zone is moving over the workpiece alongpredefined tool path Cyclic deformation Conventionally used to manufacture rotation symmetricalparts in small batches Usage of universal tools^ Source: OTT

L2 – Spinning Processes

Typical components manufactured by spinning,shear forming and flow forming I^ Design piece^

Light reflector^ Wheel rim FunnelPoly -V-pulleyClutch-housing

L2 – Spinning Processes

Typical components manufactured by spinning,shear forming and flow forming II^ Characteristics:^ Fields of application:^ Chemical engineering^ Drive systems / components^ Automotive engineering^ Aerospace engineering^ Lamps and reflectors^ Household appliances

Source: Leifeld Axisymmetric profiles with nearlyarbitrary shape

L2 – Spinning Processes

Survey of spinning processes

Shear forming^ Manufacturing of conicalworkpieces in one Cylinder-flow forming overflow Manufacturing of cylindric hollowsunder a strong reduction of thewall thickness (Leico / rm)

Spinning Successive formingfrom a blank

L2 – Spinning Processes

Survey of spinning processes

Shear forming^ Manufacturing of conicalworkpieces in one Cylinder flow forming overflow Manufacturing of cylindric hollows undera strong reduction of the wall thickness (Leico / rm)

Spinning^ Successive formingfrom a blank

L2 – Spinning Processes

Characteristics of sheet metal spinningprocesses^ Application areas Rotational symmetric hollow bodies witha wide variety of shapes^ Small and medium production volume

L2 – Spinning Processes

Characteristics of sheet metal spinningprocesses

Process characteristics^ Forming of materials that are difficult to formComplex geometries can be producedLarge and thick workpieces can be producedwith relatively low forming forcesOutstanding mechanical features and highmeasurement accuracy of components Application areas Rotational symmetric hollow bodies witha wide variety of shapes^ Small and medium production volume

L2 – Spinning Processes

Classification of spinning processes

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L2 – Spinning Processes

Classification metal spinning processes

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L2 – Spinning Processes

Sheet metal spinning

0 D 1 D

s^0 Round blank DD^^10

ProcedureStandard Initial component Metal spinning

Wall thickness^ Approxiamatelyconstant

s^1 Tensile- Metal compressive spinning forming according to according to DIN 8584, T4 DIN 8582

= ss 1 0

Part 1: Sheet metal spinning

L2 – Spinning Processes

Classification of sheet metal spinningaccording to DIN 8584Subgroup 2.1^ Subgroup 2.

Subgroup 2.

Subgroup 2.

DIN 8583^ DIN 8584^

ShearBendformingforming DIN 8586 DIN 8587

Subgroup 2.3 Tensile-Compressive^ Tensilecompressiveformingformingforming DIN 8585 Subgroup 2.2.2 Subgroup 2.2.3 Metal spinningDeep drawing

Main group 2^ Forming DIN 8582^ Subgroup 2.2.4^ Flange forming

Subgroup 2.2.1^ Drawing DIN 8584 sheet 2

Subgroup 2.2.5 Stretch identing

DIN 8584 sheet 4 DIN 8584 sheet 3

DIN 8584 sheet 5^ DIN 8584 sheet 6

DIN 8584 - sheet 1: