Question

What is the permissible error for internal taper for true running nearest to spindle nose?

(a) 0.02mm – 0.045mm 0.04 mm

(b) 0.01mm – 0.025mm 0.03 mm

(c) 0.1mm – 0.25mm 0.02 mm

(d) 0.0mm – 0.025mm 0.01 mm

This question was addressed to me in examination.

The above asked question is from Alignment Tests on Milling Machine in portion Machine Tool Metrology of Engineering Metrology

Answer 1

Right choice is (b) 0.01mm – 0.025mm 0.03 mm

Best explanation: Permissible error for testing internal taper for true running is 0.01 mm nearest to the spindle nose and this permissible error is 0.025 millimeter at a distance of 300 millimeter.