Answer to Question #202728 in Mechanical Engineering for Joe Melwin Raja

Question #202728

Calculate the gears for cutting metric threads of following

pitch. i) 4mm pitch, ii) 5.25 mm pitch. The lead screw of lathe

contains 6 TPI. The lathe is supplied with 20 to 120 teeth in step

of 5and an additional gear wheel of having 127 teeth.


1
Expert's answer
2021-06-04T16:08:02-0400

For metric threads,

where, n= number of threads per inch i.e TPI

P= Pitch of the thread to be cut

(i) 4mm

The gear train will consist of 120 teeth on the spindle gear and 127 teeth on the lead screw

Pitch


Numerators and denominators are multiplying by 10

For 5.25mm pitch, compound gear train to be used with 105 teeth on spindle gear and 127 teeth on the intermediate gear , 60 teeth intermediate gear drives a 40 teeth gear on the lead screw.


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment

Ask Your question

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS