#25 drill 4.25" deep

Started by Smit, January 19, 2021, 09:50 AM

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Tim Johnson

#15
February 23, 2021, 05:13 AM Last Edit: December 31, 1969, 04:00 PM by Guest
Quote from: Dan_AKA_ROY23 post_id=6840 time=1613424207 user_id=82I rarely drill. I will soon...

:HIJACK (sort of):

Need to go down 1" in SS 304 using a #17 drill (0.173" dia). There's a lot of holes, 349 to be exact.

Using a VMC mill..

Speeds and feeds? IDK. I have 1.3 ipm at 717 spindle speed (values G Wizard rec'ed) First spot drilling, then peck drill at -0.17" (thru hole).

Help...

:HIJACK OFF (well, similar subject so):


Do you have coolant thru? Mitsubishi MVS0440X08S050 EDP:669329 We run a 4.5mm (.1772) S3170 F9.177 in 304 SST with no pecking.
FJB

Tim Johnson

#16
February 23, 2021, 05:22 AM Last Edit: December 31, 1969, 04:00 PM by Guest
[quote="Tim Johnson" post_id=7319 time=1614086039 user_id=68]
Quote from: Dan_AKA_ROY23 post_id=6840 time=1613424207 user_id=82I rarely drill. I will soon...

:HIJACK (sort of):

Need to go down 1" in SS 304 using a #17 drill (0.173" dia). There's a lot of holes, 349 to be exact.

Using a VMC mill..

Speeds and feeds? IDK. I have 1.3 ipm at 717 spindle speed (values G Wizard rec'ed) First spot drilling, then peck drill at -0.17" (thru hole).

Help...

:HIJACK OFF (well, similar subject so):


Do you have coolant thru? Mitsubishi MVS0440X08S050 EDP:669329 We run a 4.5mm (.1772) S3170 F9.177 in 304 SST with no pecking.
[/quote]

Edit: also no spot drilling. If you feel the need to have a starter hole use a 3D drill. MVS0440X03S050 EDP:666486  The above drill is an 8D drill.
FJB

Dan_AKA_ROY23

#17
February 23, 2021, 06:24 AM Last Edit: December 31, 1969, 04:00 PM by Guest
Waiting on a drill chuck. Old one in the shop no good. Already did spot drilling. Worked out fine.
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