Name of the job: Making a boring cutter on
vertical milling cutter
What
is boring cutter: Boring cutter is a bar , we can
make holes on any ferrous or non-ferrous
metal by it’s sharp edges. There have 2 or more cutting blades at last
end of boring bar.Cutting blades are attached by screw bolt on catted shape on
base metal bar.
Include
instruments:
1.
Slide caliper
2.
Steel rule
3.
A solid cylindrical iron bar
with essential diameter.
4.
Emery paper.
5.
Adjustable rang
A.
Steps of manufacturing: To make a boring bar , steps of working given below-
A. At first we have to choice a tool steel bar for desire Dia. Here
have to remind that the cylindrical bar must be larger Dia then biggest Dia of
boring bar body.
B.
Now fixed length of boring
cutter with extra metal for facing . sheer these from full length bar.
C. Sat this bar on lathe chalk for plane turning operation.
D. Now sat the cutting tool in tool post and make plane turning
operation on boring bar . which shown as (1) , in pic.
E.
Now take a tapper turning
on fixed measure on boring bar . the catted part shown as number (2).
F.
After finished second step
of turning , sat tool post for tapper operation in noted angle( 15- 25 degree).
G. Make tapper turning on bar at part of (3) , which also shown on
drawing.
H. At last make a plain turning on gripper end of boring bar. This part
shown as (4) in drawing.
I.
Now attach this job on a
vertical milling machine to make a complete gripper.
J.
And do this operation carefully
so that gripper is get a shape in fixed size .
K.
After that, start to cut
cutting blade slot , where cutting blades are attach by screw / some tool are
not designed for attach blades , there cutting head attached by brass welding.
L.
After final finishing on
cylindrical grinding machine , and emeri
paper , then send this job to
inspection section of industry.
M.And when need to use this tool body , then attach cutting blades by
welding or screw by specification of tool.
Written
by Engr.Shaiful islam majumder
Research
at Bangladesh Industrial Technical Assistance Centre(BITAC)
(A
tool making industry)
tejgown ,Dhaka, Bangladesh
E-mail
: shaifulislammajumder@gmail.com
