Application example: MarWin Lead Testing and Analysis V2 according to MBN 31007-3
 | | Expansion package for lead testing and lead evaluation according to MBN 31007-7 Can be used in combination with MarForm MMQ 200, MMQ 400, MFU 100, with T7W probe and Mahr MarWin evaluation software, comprising: - Lead evaluation software package based on MarWin evaluation software
- Probe arm for T7W for lead measurement, double-ended, with diamond tip and HM ball dia. 3 mm for alignment
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| Features |
| | Form and lead evaluation - Form/positional evaluation (ovality / conicity / parallelism) parallel to lead evaluation
- Form/positional/lead evaluation of several wavelengths
Evaluation and recording After the measurements have been performed, measurement records with the following content are generated:
Lead parameter
The following are measured as parameters for lead evaluation: - Number of threads (upr)
- Period length (mm)
- Lead angle (degree)
minimal - Lead direction
- Lead depth Dt (µm)
- Theoretical supply cross-section DF µm2)
- Theoeretical supply cross-section per turn DFu (µm2)
- Contact length
Graphic output: The measured profiles are output in the record as a graphic. Various graphic output types are available: - 3D-cylinder in color, traditional and unwound
- Display of individual generating lines as a straightness profile for individual assessment of form and position parameters
- Amplitude spectra of the linear profiles in a bar graph or as per MBN 31007-7:3D cylinder unwinding, color
- Surface structure
- Lead surface
- Display of surface profile and lead profile
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| Description |
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Measured value acquisition: The surface structure of the seal face of a shaft influences the flow behavior of the fluid that is to be sealed and therefore greatly influence the sealing function.
A lead structure on the seal face can interfere with the interplay of shaft surface, fluid and sealing lip support creating leakage due to a conveying effect.
Lead is a surface feature appearing over the entire scope on rotation symmetrical surfaces. The evaluation of the macro lead is conducted with the option lead testing as per the Mercedes Benz Standard 31007-7.
Measurement of n generating lines (72 as per MB Standard, MBN 31007-7) A probe arm for T7W, equipped wtih two styli, is used to record measured values: - Stylus # 1 with HM ball dia. Ø 3 mm for mechanical centering and tilting of the workpiece on the Formtester MMQ 400
- Stylus # 2 with diamond tip for measurement of lead and form parameter
Scope of application:
External measurements on workpiece diameters Ø = 2 - 200 mm |
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