Chapter 3

Select categories in which the reasons for shape deviations can be divided.

• Machine-related

• Design-related

• Work-piece-related

• Measurement-related

• Environment-related

Select examples for machine-related reasons for shape deviations.

• Material inhomogeneity

• Tool wear

• Elastic deformation of tools

• Position deviations

• Temperature variations

Select motivations for the use of coordinate measurement machines (CMM)

• Measuring possibility

• Work piece geometry

• Easy handling

• Profitability

• Improved statistical quality

Select measurement instruments to measure roughness parameters.

• Bessel tester

• Hommel tester

• Perthometer

• Planck radiator

• Spectrometer

Select possible deviations in rough form of a work piece.

• Dimension

• Waviness

• Shape

• Roughness

• Position

Which roughness parameter A is calculated?

• Smoothing depth (R_p)

• Mean roughness index (R_a, R_q)

• Roughness depth (R_Z, R_max)

• Basic roughness depth (R_3z)

Which curve can describe the topographic attributes of a surface?

• S-N curve

• Bessel curve

• Abbott curve

• Alias curve

Select possible basic designs of shape test equipment.

• Rotary table instrument

• Transversal table instrument

• Fulcrum shaft instrument

• Perthometer instrument