Fadal tapping speed .1 or .2 ?

camhead420

Aluminum

Joined

Nov 22, 2019

• Mar 29, 2022

• #1

Hello to all,

I had the subject come up of why I use S200.2 for tapping instead of S200.1.
It has been so long I actually could not remember, getting old I guess.
What is everyone doing out there?

Thanks!

 

camhead420

Aluminum

Joined

Nov 22, 2019

• Mar 29, 2022

• #2

Dang I thought someone would have an opinion on this..lol, not i guess.

 

O

Omega

Aluminum

Joined

Nov 3, 2014

• Mar 29, 2022

• #3

S200m3 will auto shift into low gear so there really is no need to use .1, S200.2 will keep the spindle drive in high gear, I usually use it for tapping small holes in hard materials were torque consideration is not an issue.

I feel ya on the old part..

 

Last edited: Mar 29, 2022

Bobw

Diamond

Joined

Feb 8, 2005

Location

Hatch, NM Chile capital of the WORLD

• Mar 29, 2022

• #4

I have no idea of the actual reason they recommend that. In practice it doesn't seem to matter.

Though I have a theory.. Say you are running a big tap. 5\8" or something. If that tap stops cutting due to any number of reasons, in high gear, it'll probably stall out.

In low gear there is enough torque to break the tap, and enough torque to break a bigger tap can potentially cause other issues, like moving your vise or ripping the part out of your fixture.

There is a lot of torque there in low gear, its not chicken feed. 15hp at 100% duty cycle, geared down 2:1. Do the math.

 

camhead420

Aluminum

Joined

Nov 22, 2019

• Mar 29, 2022

• #5

Bob,
What method of tapping on a fadal is your preference rigid or tapping head?
We had trouble recently with 1/4-28 threads being oversized.
Rigid seemed to be causing it.

 

DavidScott

Titanium

Joined

Jul 11, 2012

Location

Washington

• Mar 29, 2022

• #6

I know you asked Bob but I used to tap tens of thousands of holes in aluminum with a Fadal. Tapping heads are worlds better, and faster when doing production. They are way easier on the spindle drive since it isn't reversing all the time and soooooooooooo much faster. A Fadal with a small Tapmatic running at 3k will tap pretty damn well.

 

A

adamm

Cast Iron

Joined

Sep 19, 2008

Location

Kingston, ON

• Mar 29, 2022

• #7

On my VMC 15, I use .1, and rigid tapping. It doesn't have a gearbox, and for whatever reason, it isn't happy rigid tapping in .2. Also, someone had changed the spindle gains before I got the machine, and it wouldn't rigid tap at all. I set them back to the values on the sticker in the control pendant, and it taps just fine now. Though I don't tap very fast with it. On the work it does, tapping cycle time isn't critical.

 

R

richardbt

Plastic

Joined

Mar 27, 2017

• Mar 29, 2022

• #8

I think that if you are using a tapping cycle where you need to reverse the spindle, keeping it in high range with the .2, the spindle will reverse quicker.

If you have a lot of smaller holes to tap, I am all in with using a tapping head. Very fast and less wear on everything. Almost a fast as drill the hole.

I don't have rigid tap on my machine so not many choices.

Rick

 

camhead420

Aluminum

Joined

Nov 22, 2019

• Mar 30, 2022

• #9

Thanks for the input. I typed tapping head when I meant tension/compression holder. My bad.
I do remember using those on an old boss 8, really fast. This 3016 Fadal may need looked at if doing rigid tapping is
making bad threads. 1/4-28 always has been a problem though.

 

O

Omega

Aluminum

Joined

Nov 3, 2014

• Mar 30, 2022

• #10

mr.greenman said:

Thanks for the input. I typed tapping head when I meant tension/compression holder. My bad.
I do remember using those on an old boss 8, really fast. This 3016 Fadal may need looked at if doing rigid tapping is
making bad threads. 1/4-28 always has been a problem though.

Click to expand...

Try tweaking the Q value in the rigid tap line, might help.

 

camhead420

Aluminum

Joined

Nov 22, 2019

• Mar 30, 2022

• #11

We use format 2, so I could try tweaking the feed I suppose.
Want I ended up doing to fix it was run G84 S300 F10.7,
made nice threads.

 

S

snowshooze

Hot Rolled

Joined

Sep 15, 2010

Location

Anchorage, Alaska, USA

• Jun 27, 2022

• #12

.1 is low range, for threads big. I do 1 1/4" tapping in .1
.2 is for small threads, and is more responsive. Faster.

 

S

snowshooze

Hot Rolled

Joined

Sep 15, 2010

Location

Anchorage, Alaska, USA

• Jun 27, 2022

• #13

camhead420 said:

We use format 2, so I could try tweaking the feed I suppose.
Want I ended up doing to fix it was run G84 S300 F10.7,
made nice threads.

Click to expand...

I liked format 1 for simplicity of programming.
However, in Format 1 I was unable to take advantage of my memory expansion.
I no longer utilize format 1

 

K

Kevinstj

Cast Iron

Joined

Feb 17, 2011

Location

USA

• Jul 28, 2022

• #14

I have a 15xt and usually use MO3 S500 and never had a problem. I have another question about our 6030 gearbox. What is the max speed in low range?
Is there a minimum RPM in high range?

 

W

wesg

Titanium

Joined

Nov 4, 2004

Location

Cedar Park, TX - Boulder Creek/Redwood City, CA

• Jul 29, 2022

• #15

The few times I've forgotten to put a .2 in there tapping at 7-800 rpm, the 'strain' of reversing makes me think it can't be good for the inverter.