Question

In the perpendicularity of drill head guide to base plate test, what is the position of guide column?

(a) Inclined at the upper end towards the front only

(b) Declined at the upper end towards the front only

(c) Inclined at the upper end towards the back only

(d) Declined at the upper end towards the front only

The question was posed to me during an online exam.

The question is from Alignment Tests on Pillar Type Drilling Machine topic in division Machine Tool Metrology of Engineering Metrology

Answer 1

Right option is (a) Inclined at the upper end towards the front only

The best I can explain: The error should not exceed 0.25/1000 mm guide column for a vertical plane passing through the axes of both spindle and column and the guide column should be inclined at the upper end towards the front only, and 0.15/1000 mm for a horizontal plane passing through the axes of both spindle and column.