the next step in making ct components publication version · the next step in making ct components...

The next step in making

CT components

Peter HoogerhuisPhilips Healthcare

January 27th, 2016

January 27th, 2016 Philips Healthcare

• Introduction

• CT & X-ray basics

• Application meets technology

• Large volumes

• Process

• Balance

• Continuous improvement practices

2

Content

January 27th, 2016 Philips Healthcare

Smit Röntgen

• Part of Philips Healthcare

Business Unit Generators, Tubes & Components

• Leading OEM grid supplier

• Founded in 1930’s

• R&D – Manufacturing – Sales

• Located at Healthcare Campus in

Best, The Netherlands

• Serving both healthcare and

non-healthcare customers

3

www.smitroentgen.com

January 27th, 2016 Philips Healthcare4

CT & X-ray basics (1) X-ray tube

Detector

Generator

Cooling unit

Electronics

& Interfaces

3

2

4

Basic components inside CT scanner

1

1) Anti Scatter Grid 2) Scintillator

3) ASG + Scintillator + Photo sensor + Electronics

4) High quality image

January 27th, 2016 Philips Healthcare5

CT & X-ray basics (2)

Without ASG With ASG

Scattered x-ray

January 27th, 2016 Philips Healthcare6

Application meets technology

2D ASG

3D Tungsten printing

1D ASG

Assembly

Improved image quality

Improved costprice

January 27th, 2016 Philips Healthcare

Laser Powder Bed Fusion process

Laser Powder

Bed Fusion

Post ProcessingQuality

Assurance

Powder

Recycling

3D CAD File

7

Marking &

Separation

January 27th, 2016 Philips Healthcare8

Requirements

Product:

• Material: Pure tungsten

• Wall thickness <= 100μm

• Dimensional accuracy < 25μm

• Density >90%

Process:

• ISO 13485 certified

• Large volume manufacturing

10000-40000 pc/yr

January 27th, 2016 Philips Healthcare

Large volumes

Robust processes:

• 3D printing

• Post Processing

• Metrology

9

Lean manufacturing:

7 steps to standard work

January 27th, 2016 Philips Healthcare

Large volumesProcess: 3D printing

• Powder development

• Optics and mechanics

• Process settings

• Long term behavior

• Material characteristics

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January 27th, 2016 Philips Healthcare

Large volumes: Process: Post-processing

• Platform separation

• Surface treatment

• Heat treatment

• Machining

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January 27th, 2016 Philips Healthcare

Large volumes:Process: Metrology

• Tactile

• Optical

• X-ray

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January 27th, 2016 Philips Healthcare

Large volumes: Balance

13

• Challenges:

– Long Cycle Times (CT) towards short Takt Time (TT)

– Operator availability

▪ Short process-operator interval

▪ Handling multiple workspots in balance

0

10

20

30

40

50

60

70

EOS Laser Marking EDM Inspection

Minutes

Yamazumi - balancing

CT

TT

One piece flow impossible

� Batch production

January 27th, 2016 Philips Healthcare

Robust processes & Lean Manufacturing:Enablers for short design cycles

Customer CAD drawingCustomer CAD drawing

Manufacturing CAD

drawing

Manufacturing CAD

drawing

Slicing and verificationSlicing and verification

Job preparation

and building

Job preparation

and building

14

Measurement and

evaluation

January 27th, 2016 Philips Healthcare

Take-aways

• Medical devices for diagnostic imaging

.... benefit from 3D printed components (quality vs. costs)

• Lean manufacturing

…. principles are directly embedded during production ramp-up

…. standard work for large volumes

…. eliminate waste and optimize added value

• In-house inspection tooling, measurement equipment

…. needed for fast feedback, short design cycle

• Be aware

…. of impact of post-processing

…. that moving to large volume gives new challenges

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January 27th, 2016 Philips Healthcare16

www.smitroentgen.comwww.smitroentgen.com

Thanks for your attention

www.philips.comwww.smitroentgen.com

Contact: p.hoogerhuis@philips.com