Patriot Gearhead
Plastic
- Joined
- Jun 24, 2021
- Location
- South Jersey
Hi Bob
I know of no stand fast rule (Higher Rpm = x). Perhaps others will.
I will typically do an ad hoc DOE. (Design of Experiment)
Example:
any direct correlation the change of a variable and the hole size.
DOE's can be simple to very complex. I have barely scratched the surface but there is a lot of good and free information on the web on their use.
Go make chips!
Scott
I know of no stand fast rule (Higher Rpm = x). Perhaps others will.
I will typically do an ad hoc DOE. (Design of Experiment)
Example:
- Ream some holes using different RPM's per hole and document finished hole size @ what rpm
- Drill the holes leaving the same amount for reaming in each hole. 1/64 to 1/32
- Use same cutting lubricant
- Use the same reamer.
- Use the same feed
- Now change up bit
- Same as above only keep the RPMs the same for each hole
- do the math for textbook rpm for diameter
- Ream some holes using different feed rates and document finish hole size @ what feed
- On a Bridgeport you only have three feed rates.
- Same as above only keep the RPMs the same for each hole
- You can go further by keeping everything the same and changing up Cutting fluids.
any direct correlation the change of a variable and the hole size.
DOE's can be simple to very complex. I have barely scratched the surface but there is a lot of good and free information on the web on their use.
Go make chips!
Scott