Optical 3D-measurement and its use in minting Alicona - Mr. - - PowerPoint PPT Presentation

optical 3d measurement and its use in minting
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Optical 3D-measurement and its use in minting Alicona - Mr. - - PowerPoint PPT Presentation

Optical 3D-measurement and its use in minting Alicona - Mr. Dipl.-Ing. Christian JANKO Mnze sterreich - Mr. Ing. Alfred GNADENBERGER 29.1.2015 Index: 1. Introduction to Alicona 2. 3D measurement: principle - accuracy 3. Surface


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Alicona - Mr. Dipl.-Ing. Christian JANKO Münze Österreich - Mr. Ing. Alfred GNADENBERGER 29.1.2015

Optical 3D-measurement and its use in minting

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Index:

  • 1. Introduction to Alicona

2. 3D measurement: principle - accuracy 3. Surface roughness 4. Comparison of tactile and optical method 5. Design / Analysis / Quality assurance 6. Reproduction of medals 7. Rimming profiles of blanks

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High resolution optical 3D measurement

  • Global supplier of systems based on Focus-Variation
  • International team of ~100 employees
  • Driving force for traceable optical roughness

measurement

  • Worldwide cooperations

Surface and form measurement Coorporations

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3D measurement in research and production

  • Tool industry

» Micro precision

manufacturing

» Medical technology

and pharmaceutics

» Injection moulding » Automotive

industry

» Aerospace and

aeronautics

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Index:

1. Introduction to Alicona

  • 2. 3D measurement: principle - accuracy

3. Surface roughness 4. Comparison of tactile and optical method 5. Design / Analysis / Quality assurance 6. Reproduction of medals 7. Rimming profiles of blanks

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Measurement technique: Focus-Variation

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2.5x 5x 10x 20x 50x 100x Best vertical resolution nm 2300 410 100 50 20 10 Working distance mm 8 22.5 16.5 18 10 4

  • Max. measurable area

mm² 10000 10000 10000 10000 3940 985

  • Max. measurable profile length

mm 100 100 100 100 100 100

  • Min. measurable roughness (Ra)

µm

  • 0.3

0.15 0.06 0.03

  • Min. measurable radius

µm 20 10 8 5 2 1

  • Max. measurable slope angle

° 87

Resolution and application limits

Technical specifications Infinite Focus

Profile roughness Ra = 100 nm U = 25 nm, σ = 2 nm Ra = 500 nm U = 40 nm, σ = 2 nm Areal roughness Sa = 100 nm U = 20 nm, σ = 2 nm Sa = 500 nm U = 30 nm, σ = 2 nm Height measurement z = 1000 µm EUni:St:ODS,MPE = 500 nm, σ = 0.1 µm z = 100 µm EUni:St:ODS,MPE = 400 nm, σ = 0.05 µm z = 10 µm EUni:St:ODS,MPE = 300 nm, σ = 0.025 µm z = 1 µm EUni:St:ODS,MPE = 150 nm, σ = 0.01 µm Distance measurement xy bis 1 mm EBi:Tr:Opt,MPE = 0.7 µm xy bis 10 mm EBi:Tr:Opt,MPE = 1.0 µm

Accuracy

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Index:

1. Introduction to Alicona 2. 3D measurement: principle - accuracy

  • 3. Surface roughness

4. Comparison of tactile and optical method 5. Design / Analysis / Quality assurance 6. Reproduction of medals 7. Rimming profiles of blanks

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3D dataset

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Surface of blanks

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Index:

1. Introduction to Alicona 2. 3D measurement: principle - accuracy 3. Surface roughness

  • 4. Comparison of tactile and optical method

5. Design / Analysis / Quality assurance 6. Reproduction of medals 7. Rimming profiles of blanks

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Tactile measurement instrument

  • Measuring points on one line
  • Storage of samples for further

measurements necessary

  • Documentation of results
  • Calibration work with normals
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  • Certain area or whole die
  • Relief – „mother file“
  • New measurements on special details

always possible – points on lines, distances, relief heights and radiuses

Optical 3D-measurement

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Index:

1. Introduction to Alicona 2. 3D measurement: principle - accuracy 3. Surface roughness 4. Comparison of tactile and optical method

  • 5. Design / Analysis / Quality assurance

6. Reproduction of medals 7. Rimming profiles of blanks

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Coining die

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Immediate „visual impression“ by using a colour scale for reliefs

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Automatical adjustment and comparison of two coining dies or mother tools

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Comparison of two dies (new and wasted) Green areas with a

  • max. tolerance of

10µm

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Comparison of two dies (new and wasted) – refinement to a max. tolerance of 5 µm (green area)

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Milling quality – Comparison of coining dies of 2005 and 2012 on detail „0“

Measuring line

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Distanz [µm]

Breite „0“ links 333,7265

Coining die 2005

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distance [µm]

Breite „0“ links 333,7265

Coining die 2005

distance [µm]

Breite „0“ links 408,8674

Coining die 2012

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Index:

1. Introduction to Alicona 2. 3D measurement: principle - accuracy 3. Surface roughness 4. Comparison of tactile and optical method 5. Design / Analysis / Quality assurance

  • 6. Reproduction of medals

7. Rimming profiles of blanks

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Reproducion of medals with a silver „model“

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Medal

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medal 3D-measuring

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medal 3D-measuring Milling program file

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medal 3D- measurement Milling program file Production of coining die

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medal 3D-measuring Milling program file Production of coining die Coining of new medal

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medal 3D-measuring Milling program file Production Coining die Coining new medal 3D-measuring

  • f new medal
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Original medal

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Original medal Reproduction

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Index:

1. introduction alicona 2. 3D measurement: principle - accuracy 3. Surface roughness 4. Comparison of tactile and optical method 5. Design / Analysis / Quality assurance 6. Reproduction of medals

  • 7. Rimming profiles of blanks
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Rimming profile - blanks

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Summary:

  • More features and possibilities with 3D
  • Faster and more reproduceable additional measurements
  • No storage of samples necessary – only „mother file“
  • 6 month of using the system
  • Tactile measuring fully removed by 3D-measurement
  • Still discovering more possible applications
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The end!

Thank you for your attention!