What is the multiplication for rev/min on appliance tools? drills milling electrical device lathe?

As in what speed do you use if your drilling a 5mm hole (or working on a 5mm thick piece of textile on a laithe)

my lecturer told me but i forgot
Answers:
I infer you can search it by google to get more information going on for drilling tools




http://www.toboc.com/forum3/default.aspx…
cs * 4 / diameter


diameter is the part on the lathe or the tool on a mill/drill


mild steel next to a high speed tooling has a cs of roughly 80 on the safe side.

5mm is around 0.19 inch

so that 80*4/0.19 =about 1600 rpm.
Be careful some chucks are not rate to go this fast. Ask your instructor that the chuck rpm is rate for. Source(s): machinist
here is a list of other cutting speeds http://its.fvtc.edu/MachShop1/drillpress…
its not about the bulk , its about hardness

if u operate tricky materials thats down on lower rpm , for milder materials thats done on higher rpms & the lathing head is different logically

for the thickness u wanna cut , it depends on the working time Source(s): C.E
For each type of material and type of adjectives tool, there will be a recommended cutting speed. Now, basically remember that this cutting speed is the actual speed of the tool tip as it cuts into the material.
For adjectives speeds quoted in FEET per minute:
RPM= CS x 12 / (Pi x Dia.in inches).
So if you are, vote, drilling mild steel with a high speed drill 1/2" dia.,it would step like this:
RPM = 80(ft/min) x12 = 960.
Pi x 0.5 (the 1/2" drill) = 1.571.
Thus 960/1.571 = 611 RPM.
This is the RPM required for drilling a 1/2" hole in the mild steel.
For a lathe, it is also the RPM for the spindle, if the workpiece be 1/2" diameter. For a lathe, the diameter is the diameter of the work, in the above formula.
In milling, the diameter is the diameter of the cutter, like surrounded by drilling.

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