Leitz PMM-G

Leitz PMM-G – World’s largest high-precision CMM and gear inspection system

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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.

Downloads
ISO 10360

Leitz Specification Factsheet

Leitz PMM-F / PMM-G brochure
Applications
Case Study: BRUDERER AG - Switzerland
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Features & benefits
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
Related information

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.

Technical data

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.