ISO 4287 pdf download

ISO 4287 pdf download.Geometrical Product Specifications (GPS) – Surface texture: Profile method – Terms, definitions and surface texture parameters 1 Scope This International Standard specifies terms, definitions and parameters for the determination of surface tex- ture (roughness, waviness and primary profile) by profiling methods. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to in- vestigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid lnternational Standards. I S 0 3274: 1996, Geometrical Product Specifications (GPS) – Surface texture: Profile method – Nominal characteristics of contact (stylus) instruments. IS0 4288: 1996, Geometrical Product Specifications (GPS) – Surface texture: Profile method – Rules and procedures for the assessment of surface texture. IS0 11562: 1996, Geometrical Product Specifications (GPS) – Surface texture: Profile method – Metro- logical characterization of phase correct filters. 3 Terms and definitions 3.1 General terms 3.1.1 profile filter filter which separates profiles into longwave and shortwave components [ISO 115621 NOTE – There are three filters used in instruments for measuring roughness, waviness and primary profiles (see figure 1 ). They all have the same transmission character- istics, defined in IS0 1 1 562, but different cut-off wave- lengths.3.1.1.2 Ac profile filter filter which defines the intersection between the roughness and waviness components (see figure 1) 3.1.1.3 Af profile filter filter which defines the intersection between the waviness and the present in a surface even longer wave components see figure 1)3.1.2 coordinate system that coordinate system in which surface texture parameters are defined NOTE- It is usual to use a rectangular coordinate sys- tem in which the axes form a right-handed Cartesian set, the X-axis being the direction of tracing colinear with the mean line, the Y-axis also nominally lying on the real sur- face. and the Z-axis being in an outward direction (from the material to the surrounding medium). This convention is adopted throughout the rest of this International Standard. 3.1.3 real surface surface limiting the body and separating it from the surrounding medium 3.1.4 surface profile profile that results from the intersection of the real surface by a specified plane See figure 2. . NOTE-...