Here I am going to give a simple description to make a spar gear in horizontal milling machine.
Calculation:
NT(number of tooth) = 6
So by formula, 40/NT
=40/6
=6. 4/6
=6. (4*3)/(6*3)
=6. 12/18
Here, 6= full rotation
18= hole circle[where indexing pin is be sated]
12= Holes, to transfer pin to clockwise from hole circle.
NOTE: In calculation, Extra digit which taken(6) in dividing. This extra digit is must take by deep thinking. So that the result digit word has in indexing plates hole number.
Working process:
1. We get 18 as a hole circle. So we have to put indexing pin on 18th written hole, And fix job on job holder for operation.
2. Now crank move beside (left) of indexing pin. And fix this here temporary.
3. Turn indexing pin to 12 holes on same circle. And pin is sat on 12th no hole.
4. Crank move to left side of pin.
5. And now indexing pin turn to by clockwise
For full 6 times and at last set on those hole.
6. Start the machine and cut first tooth.
After complete one tooth, by the process given above, have to do again from the End point of before casting.
Here it is remind in mind that after finishing cutting one tooth. Machine must turn off!
By the way, the gear with 6 tooth will be complete after do this operation.
Posted by,
Shaiful islam majumder
Mechanical engineer
Fpi, feni
Bangladesh industrial and technical assistance centre.
Dhaka
No comments:
Post a Comment