Leitz PMM-C

Leitz PMM-C - Ultra-high precision CMM & gear checker

Leitz_PMM-C-M
The Leitz PMM-C is a fixed bridge/moving table-type coordinate measuring machine. It combines ultra-high accuracy with outstanding speed, thus ensuring a very high throughput. This coordinate measuring machine is fast, affordable and allows to perform all measuring tasks, even the most complex ones. The Leitz PMM-C is also offered as a gear inspection center. It can accommodate maximum outside diameters up to 1550 mm.

The Leitz PMM-C line of high-performance CMMs combines ultra-high accuracy with unmatched high machine dynamics. This results in extreme short cycle times and therefore very high throughput. Fast data gathering and advanced High-Speed-Scanning further improve the throughput for efficient process control.
 

The Leitz 3D probe technology with integrated High-Speed-Scanning enables fast collection of large point numbers. Coordinate measuring machines of the PMM-C series are also capable of form inspection.

Measuring machines of the Leitz PMM-C series are also used as gear checkers. Very fast and ultra precise inspection of any kind of gears up to a diameter of 1550 mm is possible with those machines. Gear cutting tools such as hob cutters, broaches, shaper cutters and shaving gears can also be measured.

Leitz PMM-C gear checkers provide several advantages compared to a conventional single purpose gear checker:

  • They are much more flexible, as not only gears but any component and any geometry can be measured.
  • Leitz gear checkers 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 2400 mm
  • Leitz PMM-C coordinate measuring machines / gear checkers measure all datums as specified in the drawing, even in large internal gears.
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  • Closed Frame design with fixed portal and moving table
  • High resolution steel scales by Heidenhain with automatic temperature compensation
  • Pre-stressed air bearings with electronic gap monitoring
  • Power transmission by re-circulating ball screw drives
  • Main structure made exclusively of granite and cast iron, avoiding aluminium
  • Leitz 3D probe system LSP-S2, suitable for stylus length up to 800 mm
  • As an option or addition to the 3D probe head the Leitz Precitec LR Optical White Light Sensor is available.
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.

Leitz Precitec LR Optical White Light Sensor

As an option or addition to the 3D probe head the Leitz Precitec LR Optical White Light Sensor is available. This sensor uses a chromatic confocal measurement method and is ideal for applications in the area of lenses (glass, plastics), surfaces and profiles.

HP-O optical sensor

The new optical HP-O technology enables the measuring throughput to be further increased on the ultra-precise Leitz PMM-C from Hexagon Metrology. Even the measurement of large workpieces, rotationally symmetric parts and hard-to-reach features has been significantly simplified and accelerated.

The new scanning technology is based on interferometric distance measurement with sub-micron resolution. The optical sensors used in this process have a diameter of just 3 mm. They can be replaced automatically during a measurement run and do not require any special ambient light.

Sensitive surfaces, such as copper or lead, shiny and reflective surfaces as well as deformation-critical structures on components can be inspected without pretreatment.

CMM Specifications and Gear Inspection

CMM Specifications

 

Model

X stroke
[mm]

Y stroke
[mm]

Z stroke
[mm]

8.10.6

800

1000

580

12.10.6

1200

1000

580

12.10.7

1200

1000

700

12.10.7 Ultra

1200

1000

700

16.12.7

1600

1200

700

16.12.10

1600

1200

1000

24.12.7

2400

1200

700

24.12.10

2400

1200

1000

24.16.7

2400

1600

700

24.16.10

2400

1600

1000

 

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

 

Available interfaces:

  • Gleason GAGE 4/WIN; Klingelnberg KIMOS; bevel-gear-chain from University of Aachen

 

Gear cutting tool:

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

 

Evaluation standards:

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

 

 Gear inspection with
Leitz PMM-C
Related Specifications

PMM-C 8.10.6

PMM-C 12.10.6 
12.10.7

PMM-C 16.12.7 
24.12.7

PMM-C 16.12.10 
24.12.10

PMM-C 24.16.7 
24.16.10

 Modul range [mm]

0.5 - 100 (smaller modules on request)

 Max. gear dia. - spur [mm]

750

950

1150

1150

1550

 Max. gear dia. - helical* [mm]

500

700

900

900

1300

 Max. gear width [mm]

600

700

700

1000

700 / 1000

 Max. shaft length [mm]

1000

1200

1600 / 2400

1600 / 2400

2400


* Depending on styli configuration and module

Leitz PMM-C Line brochure
Precitec LR Brochure
HP-O OPTICAL SENSOR Brochure
Leitz Pathfinder brochure
ISO 10360
Leitz Specification Factsheet
HP-O Measurement Solution on Leitz CMMs
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