Machine Drawing

218 Machine Drawing dharm d:\N-Design\Des15-1.pm5 Fundamental deviation in microns (1 micron = 0.001 mm) Diameter Lower deviatio ...

Limits, Tolerances, and Fits 219 dharm d:\N-Design\Des15-1.pm5 Fundamental deviation in microns (1 micron = 0.001 mm) Diameter L ...

220 Machine Drawing dharm d:\N-Design\Des15-1.pm5 Fundamental deviation in microns (1 micron = 0.001 mm) Diameter steps Upper de ...

Limits, Tolerances, and Fits 221 dharm d:\N-Design\Des15-1.pm5 Fundamental deviation in microns (1 micron = 0.001 mm) Diameter s ...

222 Machine Drawing dharm d:\N-Design\Des15-1.pm5 For each letter symbol from a to zc for shafts and A to ZC for holes; the magn ...

Limits, Tolerances, and Fits 223 dharm d:\N-Design\Des15-1.pm5 15.3.2.2 Formulae for calculating fundamental hole deviation The ...

224 Machine Drawing dharm d:\N-Design\Des15-1.pm5 (b) Lower deviation EI for the hole F = + 5.5 D0.41, where D = 50 80× Hence, E ...

Limits, Tolerances, and Fits 225 dharm d:\N-Design\Des15-1.pm5 Step 4: Calculate the interference/clearance (a) between the bush ...

226 Machine Drawing dharm d:\N-Design\Des15-1.pm5 f25H7 f25h9 40 C11 10 H10 40 h11 10 h9 Fig. 15.4 Toleranced dimensions for int ...

Limits, Tolerances, and Fits 227 dharm d:\N-Design\Des15-1.pm5 Figure 15.6 shows dimensioning with a bilateral tolerance; the va ...

228 Machine Drawing dharm d:\N-Design\Des15-1.pm5 than the hole and still be within the prescribed tolerances. It results in a c ...

Limits, Tolerances and Fits 229 dharm d:\N-Design\Des15-2.pm5 15.4.3.2 Maximum interference It is the magnitude of the differenc ...

230 Machine Drawing dharm d:\N-Design\Des15-2.pm5 15.4.4 Hole Basis and Shaft Basis Systems In working out limit dimensions for ...

Limits, Tolerances and Fits 231 dharm d:\N-Design\Des15-2.pm5 H11 – d11 D11 – h11 H8 – k7 K8 – h7 H7 – r6 R7 – h6 H6 – e7 E7 – h ...

232 Machine Drawing dharm d:\N-Design\Des15-2.pm5 15.5 Tolerances of Form and Position 15.5.1 Introduction Tolerances of size ar ...

Limits, Tolerances and Fits 233 dharm d:\N-Design\Des15-2.pm5 Element Tolerance zone a – Tolerance area Tolerance zone Element b ...

234 Machine Drawing dharm d:\N-Design\Des15-2.pm5 15.5.7 Indicating Geometrical Tolerances on the Drawing To eliminate the need ...

Limits, Tolerances and Fits 235 dharm d:\N-Design\Des15-2.pm5 a – Correct b – Correct c – Incorrect d – Correct e – Correct Fig. ...

236 Machine Drawing dharm d:\N-Design\Des15-2.pm5 Cylindricity tolerance 0.1 Permissible non-cylindricity 0.2 Parallelism tol ...

Limits, Tolerances and Fits 237 dharm d:\N-Design\Des15-2.pm5 Symmetry tolerance A 0.08A .04 Radial run-out 0.1D D Permissib ...