Question

A slot is to be milled centrally on a block with a dimension of 40 ± 0.05 mm. A milling cutter of 200 mm width is located with reference to the side of the block within ± 0.02 mm the maximum offset in mm between the centrelines of the slot and the block is

1. ± 0.070
2. 0.070
3. ± 0.020
4. ± 0.045

Answer 1

Correct Answer - Option 3 : ± 0.020

Concept:

Since the reference is taken from the side. Therefore only tolerance on the tool position will affect the product.

Hence, The maximum offset between the centre lines of the slot and the block = tolerance on the side = ± 0.020