Thread Cutting MCQ with Answers

Thread Cutting MCQ with Answers

6) What is the minor diameter of Trapezoidal square thread Tr 40 x 7 depth clearance of 0.01 mm?

Answer is:

32.98 mm

7) What is the minor diameter of screw thread SQ 62 x 10.5 with depth clearance of 0.12 mm?

Answer is:

51.26 mm

8) How many un-numbered divisions on the British chasing dial?

Answer is:

4

9) What is the formula for finding gear ratio for fractional pitch thread?

Answer is:

DR/DN = Leads of screw to be cut X No. Of threads per inch of lead screw

10) Calculate the gear ratio to cut a 1/4 inch lead on a lathe with lead screw of 2TPI?

Answer is:

(1/2)