Transcript Major Trends in Metrology – Utilizing Modern Multisensor

Major Trends in Metrology – Utilizing Modern
Multisensor Coordinate Measuring Systems
Why multisensor?
Status in Multisensor Coordinate Measuring system today
Sensors
Benefit
Cost of ownership
Major trends in Multisensor Coordinate Measuring system
More functional gages
More ease of use programming tools -> 1-3 DAY BASE TRAINING
Software gets interchangable -> I++
Design-manufactoring-Inspection go together
FDA compliant Feature based programming
More custum gage user interfaces
Uncertanty protocol (GUM)
Who is QVI?
QVI (with brands OGP, RAM, VIEW, KOTEM)
delivers 35% of all multisensor systems per year world wide
Status today:
Why Multisensor?
No single sensor can measure all parts !
Status today:
Multisensor Application Example
Combination of Sensors Work Better
 Video can measure:
 Diameters of chamfers
 Diameter of D at top of hole
 Focus points on A
 Focus points on E if:
 If you can “see“ it, you can measure it
 But what if you can’t “see” it?
 Tactile probing works best for
measuring bore for size, form, and
orientation
 Laser works best for surfaces (A,B)
Status today:
Video probes
Video Camera with part surface illumination
Video image
Measures
•2D contours by edge scanning
•3D topography by multifocus
•edges
•Arc‘s, Lines, circle
•Hight (in z)
part surface illumination
Major trend:
More Optical probes
Different Surfaces Require Different Sensors
high accurate
White light
laser
surface points
measurement
deflectrometry
Line sensor
Area sensor
high speed
surface
measurement
Scratch detection on shiny surfaces
High speed surface measurement
High accurate edge detection
Sensor Applications
Especially Required for line and area sensors - Timeframe until 2015-2020
Impeller
Cell Phone cover
Turbine blade
Why : can reduce metrology program creation time by 50 to 90% AND increases
Accuraccy
Status today:
Tactile Probes
Touch Trigger

Great variety of probe tip diameters and stylus lengths

Interchangeable stylus modules and change racks
Very low force probe
–Liquids, adhesives, Silicon wafers,
–Contact lenses
High Speed Continuous Contact Scanning
• Scan unknown surfaces
– No prior knowledge of form required
– Simply select start and end points
• Solves complex 3-D challenges
– Higher order curves
– B-splines
• Similar to video edge trace
Interposer (fiber probe)
–Very small diameter
Status today:
Comparison of Sensors
Each Sensor Has Strengths and Weaknesses
Comparison of Multisensor Measurement Technologies
Video
Strengths
Weaknesses
Tactile
Laser

Edge detection

General purpose

Surface profiling

Fast data acquisition

Surface information

Fast data acquisition

Non-contact

Access to internal features

Non-contact

Feature must be illuminated and
imaged

Slower data acquisition

Physical contact

Limited surface information

Surface dependent
performance

Working distance
Status today:
Advanced Multisensor production system
Protection box Video
Laser
Part loading
Video
Tactile probe
Status today:
Economic Benefits
Multisensor Can Save Money

Higher productivity
 Fewer set-ups
 Faster cycle time
 Lower cost per part

One system less costly than three or
four

Reduced training and calibration costs

Maximum “data per dollar”
Major trend:
Investment comes from shop floor
Much more ease of use required
Major trend:
Reduce Cost of ownership
• Customers will only invest in machines where the cost of
ownership is less than today
How?
• Software will be dramatically simpler to use than today
– CAD based Multisensor CMM -> base training
1-3 day training
Major trend:
More Multisensor CAD based programming
Advantage: - reduce programming cost
- measurement is prepared before part is physically in
existence
Major trend:
More Functional Gages (Fitting) less GD&T
3D functional gages (No Gauß)
-> Immediate Visible Measurement results
Advantage: - reduces cost for scrap
- Speed up production Control
- less training needed
Major trend:
FDA compliant Feature based
measurement
Select Features
In Image
Or List
Resulting
Protocol
Advantage: - substantial reduction of programming time
- worker selects Features to be measured
- Training 10 minutes
trend:
Use existing technologies for metrology applications
(example. copy machine)
SCAN 200 (scan + Fit + GD&T)
- easy to use on Shop Floor
Advantage: - low cost 2D measuring system with GT&T
Major trend:
Integrate more special applications into
Multisensor systems
Gear measurement – optical and tactile
Roundness, Roughness, forms
Thread Cutter
Thread
Hob, cutter measurement – optical and tactile
Advantage: - Less different metrology equipment required -> cost reduction
Major trend:
Design – Manufactoring – Inspecting
go together by a NEW software concept
SmartProfile I++
CAD Info from ANY
CAD Systems
create Result
define Metrology Project
- define Metrology
- define points to measure
GD&T
Functional
Fit per part
GR&R
I++
manufacturing trend
send points to
measure
Measured point
Cloud
control ANY I++ capable CMM - gather points
SPC
Analysis
Major trend:
Protocol Result Standards: Uncertainty in Measurement
(Virtual CMM)
New
Advantage: accuracy statement for ALL measurements
Major trend:
Ease of use – by intelligent tools -will reduce cost