Make a working drawing of the column bracket shown in Fig. 8-121. Scale 1:1. The following…

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Make a working drawing of the column bracket shown in Fig. 8-121. Scale 1:1. The following information is to be added to the drawing:

• The bottom of the base is to have a maximum roughness value of 125 µm. and a machining allowance of .06 in.

• The tops of the bosses are to have a maximum roughness value of 250 min. and a machining allowance of .04 in.

• The end surfaces of the hubs supporting the shafts are to have maximum and minimum roughness values of 63 and 32 µm. and a machining allowance of .04 in.

• The large hole is to be dimensioned for an RC4 fit. The small hole is to be dimensioned for an LN3 fit for plain bearings.