Feed rate? Plunge rate? rpm? for 0.5mm bit

shuRe · 05-12-2005, 01:28 PM

Im cnc'ing a copper waterblock tomorrow with 0.5mm wide veins for the water to flow through (WW design). The veins will be 2.5mm deep. The bit is solid carbide.

What i would like to know is:
The feed rate to set the bit at (going accross the block)
The plunge rate to set the bit at (going down into the block)
The RPM for the drill bit to be set at

Any help would be appreciated.

bigben2k · 05-12-2005, 02:19 PM

Glad to see you here; I was going to reply to your OC thread.

There's a calculator available at:
http://www.robbjack.com/

It's going to be mind-boggling slow...

shuRe · 05-12-2005, 02:28 PM

cheers! very helpful

JFettig · 05-12-2005, 05:54 PM

Hi, whats spindle speed are you running? I would say for feed rate, take .0005" per tooth, calculate it from that and rpm. Plunge rate, it depends on the spindle speed. You better be hoping you have a fast spindle for that little end mill

Jon

05-12-2005, 01:28 PM	#1
shuRe Cooling Neophyte Join Date: May 2005 Location: UK Posts: 5	Feed rate? Plunge rate? rpm? for 0.5mm bit Im cnc'ing a copper waterblock tomorrow with 0.5mm wide veins for the water to flow through (WW design). The veins will be 2.5mm deep. The bit is solid carbide. What i would like to know is: The feed rate to set the bit at (going accross the block) The plunge rate to set the bit at (going down into the block) The RPM for the drill bit to be set at Any help would be appreciated.

05-12-2005, 02:19 PM	#2
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Glad to see you here; I was going to reply to your OC thread. There's a calculator available at: http://www.robbjack.com/ It's going to be mind-boggling slow... __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

05-12-2005, 02:28 PM	#3
shuRe Cooling Neophyte Join Date: May 2005 Location: UK Posts: 5	cheers! very helpful

05-12-2005, 05:54 PM	#4
JFettig Cooling Savant Join Date: Feb 2003 Location: Willmar MN/Fargo ND Posts: 504	Hi, whats spindle speed are you running? I would say for feed rate, take .0005" per tooth, calculate it from that and rpm. Plunge rate, it depends on the spindle speed. You better be hoping you have a fast spindle for that little end mill Jon

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