SX28-72 Flange Facing Machine
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APPENDIX B
SURFACE METROLOGY
First profile graphs of roughness texture were produced over fifty years ago by a German Engineer,
Gustav Schmalz. His graphs allowed differential magnification of vertical and horizontal axes so that a
visual assessment of surface could be made.
These profile graphs did not provide the direct indications of magnitude required by workshops. Of the
usual ways of measuring a wave from the deepest individual roughness depth of surface (R Max) was
too dependent on extremes e.g. dirt or scratches.
Conventional statistical terms like RMS present instrumental difficulties: The compromise is to use Ra
previously known as C.L.A. (Centre Line Average) which can be determined on a purely geometrical
basis and easily measured on an electrical instrument.
Ra
This is the arithmetic mean of the departure of the profile of the surface from the mean line.
Содержание SILK SX28-72
Страница 55: ...SX28 72 Flange Facing Machine 54 Fig 30 Main drive assembly ...
Страница 59: ...SX28 72 Flange Facing Machine 58 Fig 31 Surfacing arm assembly ...
Страница 61: ...SX28 72 Flange Facing Machine 60 Fig 32 Gearbox assembly ...
Страница 64: ...SX28 72 Flange Facing Machine 63 Fig 33 Base assembly ...
Страница 66: ...SX28 72 Flange Facing Machine 65 Fig 34 Toolpost assembly ...
Страница 68: ...SX28 72 Flange Facing Machine 67 Fig 35 Base centraliser ...
Страница 70: ...SX28 72 Flange Facing Machine 69 Fig 36 Counter balance ...
Страница 73: ...SX28 72 Flange Facing Machine 72 TYPES OF TOOL BIT FOR GENERAL PURPOSE AND FINE FINISH ...
Страница 74: ...SX28 72 Flange Facing Machine 73 TOOLS FOR V GROOVE PLUNGE MACHINING ...
Страница 78: ...SX28 72 Flange Facing Machine 77 APPENDIX C V GROOVE MEASUREMENT ...
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Страница 80: ...SX28 72 Flange Facing Machine 79 APPENDIX D AIR MOTOR MANUFACTURERS INFORMATION ...
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Страница 92: ...SX28 72 Flange Facing Machine 91 APPENDIX F BEARING LUBRICATION RU40035UU ...