Question

How perpendicularity of drill head guide to the base plate is performed?

(a) By placing the frame level with graduations from 0.03 to 0.05 mm/m on spindle table

(b) By placing the frame level with graduations from 0.05 to 0.1 mm/m on guide column

(c) By placing the frame level with graduations from 0.05 to 0.1 mm/m on spindle table

(d) By placing the frame level with graduations from 0.03 to 0.05 mm/m on guide column

This question was posed to me during a job interview.

I want to ask this question from Alignment Tests on Pillar Type Drilling Machine topic in division Machine Tool Metrology of Engineering Metrology

Answer 1

Correct answer is (d) By placing the frame level with graduations from 0.03 to 0.05 mm/m on guide column

The best I can explain: The perpendicularity of drill head guide to base plate test is performed by placing the frame level (with graduations from 0.03 to 0.05 mm/m) on guide column and base plate and the error is noted by noting the difference between the readings of the two levels.