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Mahr Inc.


Controller Adds Surface Finish Capability to Form Tester

MarForm MMQ 400-2 Series is faster, provides higher resolution on all axes and improved electronic interface

Published: Wednesday, February 2, 2011 - 11:21

(Mahr Federal: Providence, RI) -- Mahr Federal has introduced a new version of its successful MMQ 400 series. The MarForm MMQ 400-2 integrates a controller that dramatically increases the speed and resolution of the machine, and allows it to measure surface finish characteristics according to accepted ISO, ASME, and JIS standards.

“Traditionally, form measurement machines are designed to measure longer wavelengths, allowing 5 to 10 microns between data points,” says Pat Nugent, vice president of metrology for Mahr Federal. “But the increased speed and resolution of the new MMQ 400-2 controller has been specifically designed with surface roughness in mind. It can sample data with spacing as tight as 0.005 microns, far exceeding accepted international standards for roughness measurement.”

As a result, Nugent adds, operators will benefit from reduced setup and measurement cycle time using the MMQ 400-2, and reduce costs by needing only a single piece of equipment for both form and surface measurements.

The MarForm MMQ 400-2 Formtester was redesigned from the ground up. It’s now more robust, less sensitive to environmental influences, faster, more flexible, and more accurate than comparable systems. The MMQ 400-2 offers solid construction with a generously dimensioned, reinforced steel base. High-precision mechanical bearings for the rotary table eliminate the need for an air supply, and all motors and electronic components have been thermally isolated to enhance stability. Wherever possible, homogeneous materials have been used in construction to minimize the effects of thermal expansion.

Fully controlled by either Mahr’s newest EasyForm Version 4 or AdvancedForm Version 4 software, the MMQ 400-2 is easy to use and can evaluate all standard form parameters, including roundness, sector roundness, run-out, sector run-out, concentricity and coaxiality, total run-out, cylindricity, straightness, section-by-section straightness, parallelism, perpendicularity, angularity, flatness, conicity, and taper. The system has been designed to measure a variety of workpieces, including injection components, ABS components, valves, pistons and piston rods, brake disks, gear shafts, ball-bearings, and many more.

The skidded probe roughness package for the MMQ 400-2 utilizes the same diamond-tipped PHT stylus as is used on Mahr Federal’s popular PS1 and M300 surface-finish machines, and the same MarWin-based surface finish software as the MarSurf XR 20. The stylus is mounted opposite the ruby-tipped form probe on the MMQ 400-2’s motorized T7W probe head. The MMQ 400-2 automatically swivels the probe to apply the diamond stylus, and changes from horizontal to vertical measurement as needed, utilizing standard surface finish parameter cut-off lengths. A skidless probe measuring option is also available utilizing diamond-tipped styli that are directly mounted to the T7W probe head.

Several versions of the MMQ 400-2 Formtester are available. Options include: manual or motorized center and tilt tables; vertical Z-axis length of 350 mm, 500 mm, or 900 mm for long shafts; and horizontal X-axis of 180 mm or 280 mm. All measuring axes are fully motorized. A selection of available probes—including the T7W 360° motorized bidirectional probe, and the manual T20W probe—further enhances measuring flexibility.


About The Author

Mahr Inc.’s picture

Mahr Inc.

Mahr Inc. a member of the Mahr Group, manufactures and markets a complete range of dimensional measurement solutions from handheld and custom-made gauges to technically advanced measurement systems for form, contour, surface finish and length for the automotive, aerospace, medical products, electrical, plastics, and optical engineering industries. Mahr also provides calibration and contract measurement services. Mahr's calibration laboratories are accredited to ISO/IEC 17025:2005, NVLAP Lab Code 200605-0. Mahr Group is headquartered in Göttingen, Germany. Mahr Inc. is headquartered in Providence, Rhode Island.