Leitz PMM-G

Leitz PMM-G - Worlds largest high precision CMM & gear inspection system

The Leitz PMM-G provides highest accuracy and a highly enhanced throughput for large-size XXL workpieces. These workpieces are used for example in aircraft and aerospace industries or in ship engine constructions. Also the measurement of large gears used in wind turbines is possible. Despite such large measuring strokes, the Leitz PMM-G reaches a precision and performance level, which is usually common with much smaller 3D measuring machines.

With the Leitz PMM-G, the probing frequency, acceleration, maximum speed and scanning performance are significantly enhanced.
The Leitz PMM-G features the Overhead Design with integrated U-shaped foundation for highest accuracy and high throughput. As a result, all moving masses have been minimized.

The X axis is equipped with dual drive motion systems and transducer systems. The PMM-G features also the Leitz LSP-S2 scanning probing system. This probe head measures very precisely even with long and heavy styli. Styli configurations of up to 800 mm and 1000 g are possible.

Leitz PMM-G gear inspection systems provide several advantages compared to a conventional single purpose gear tester:

  • They are much more flexible, as not only gears but any component can be measured.
  • Leitz gear inspection systems work without a rotary table, i.e. alignment or centering of the gear is not required.
  • Unrivalled throughput by automatically measuring a large number of gears on one pallet.
  • Complete inspection of gears mounted on long shafts of up to 7000 mm.
  • All datums are measured as specified in the drawing, even in large internal gears.
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  • Moving gantry in overhead design with minimized moving mass
  • Massive granite guiding structures in X and Y, on two-point support
  • Ceramic Z-ram
  • Dual drives and dual scales in X
  • Leitz LSP-S2 probe system, suitable for stylus length up to 800 mm
  • Integrated pneumatic damping system for machine and foundation

LSP-S2 Probe Head

With horizontal probe extensions of up to 800 mm length the continuous High-Speed-Scanning probe head LSP-S2 allows the measurement of features deep inside a work piece. Its integrated automatic weight balance system can carry styli configurations of up to 1000 g. LSP-S2 is the ideal probe head for long styli.

Probing deflections are measured via high resolution Linear Variable Differential Transducers (LVDT). The LSP-S2 supports all the standard probing modes like Single Point Probing, Self-Centering as well as Continuous High-Speed-Scanning for fast and accurate form and profile measurements.

Like all other Leitz probe heads, the LSP-S2 provides simultaneous and unclamped probing in all axis, always orthogonal to the surface. This allows the correct compensation of any styli deflection.

CMM Specifications and Gear Inspection
 
CMM Specifications

Model

  X stroke
[mm]

  Y stroke
[mm]

Z stroke
[mm]

XX.20.12

3000/4000/5000/6000/7000

2000

1200

XX.30.12

3000/4000/5000/6000/7000

3000

1200

XX.40.12

5000/6000/7000

4000

1200

XX.45.12

5000/6000/7000

4500

1200

XX.20.16

3000/4000/5000/6000/7000

2000

1600

XX.30.16

3000/4000/5000/6000/7000

3000

1600

XX.40.16

5000/6000/7000

4000

1600

XX.45.16

5000/6000/7000

4500

1600

XX.20.20

3000/4000/5000/6000/7000

2000

2000

XX.30.20

3000/4000/5000/6000/7000

3000

2000

XX.40.20

5000/6000/7000

4000

2000

XX.45.20

5000/6000/7000

4500

2000

XX.30.25

3000/4000/5000/6000/7000

3000

2500

XX.40.25

5000/6000/7000

4000

2500

XX.30.30

3000/4000/5000/6000/7000

3000

3000

XX.40.30

5000/6000/7000

4000

3000

 

Gear Inspection
 
Cylindrical gears: 

  • Spur, helical, double helical, splines (internal and external)
  • Clutch gears (internal and external)
  • Gear segments (minimum No. of teeth: 1)
  • Gear racks

Bevel gears:

  • Straight bevel, spiral bevel, hypoid bevel, crown gears

Curvic Couplings
 
Available interfaces:

  • Gleason GAGE 4/WIN; Klingelnberg KIMOS; DMG (Deckel Maho Gildemeister), Depo

Gear cutting tools:

  • Hob cutter, broach, shaper cutter, shaving gears, form cutter

Evaluation standards:

  • DIN, ISO, AGMA, ANSI, JIS, CNOMO, CAT

Leitz PMM-G gear inspection systems - Related specifications

PMM-G XX.20.ZZ

PMM-G XX.30.ZZ

PMM-G XX.40.ZZ

PMM-G XX.45.ZZ

Modul range [mm]

1 - 100

1 - 100

1 - 100

1 - 100 mm

Min. - max. gear dia. - spur [mm]

10 -1950

10 - 2950

10 - 3950

10 - 4450

Min. - max. gear dia. - helical* [mm]

10 - 1600

10 - 2500

10 - 3500

10 - 4100

Max. shaft length [mm]

up to 7000

up to 7000

up to 7000

up to 7000

* The max. gear diameter depends on modul and styli configuration. Even bigger gearings can be measured, if rotated once for 90° during the measurement.
Leitz PMM-F / PMM-G brochure
Leitz Pathfinder brochure
ISO 10360
Leitz Specification Factsheet
BRUDERER AG - Frasnacht

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