Rigid Tapping

[mholden]

It would have been set to 3 and 3

[moldcore]

OK, Setting it to zero works better and is closer to what I would expect. So my next question is: What does this setting do exactly? Is there a problem leaving it at zero? What would be the optimal settings for the ramp and fudge factor? Am I going to have to change this with every tap or does every one use just one speed for all taps?

[tsutt]

Leaving at zero could cause a high amperage surge and fault out. I would set it 1/2 sec. - 1 sec. it's kind of harsh to ask a spindle to go from 0 - max in ZERO time.

[VTEC]

i run fanuc at work but i figure tapping is tapping so i thought id put my input in. I have to rigid tap on the machine i use the most because we dont have a tapping head for it and i dont like it that much. i go through alot of taps if it the tap gets clogged your hosed but i only tap blind holes. im sure for through holes it would be fine. and i always just use regular collets and aroun 1000rpm usally 10000 could be intresting though haha

[rhino]

Originally Posted by solgood if you have rigid tapping you will need to have tap collets, they will hold on to the square end of the tap.

If you have rigid tapping you should be able to use a ER- style collet. dont use a jacobs chuck as they stuff the shank of the tap (if they slip) and make them un-usable with er style collets(if you have any).

ALSO:

I have never seen a tap collet let alone ever heard of one, i would like to see one though. maybe someone can post a picture of one?

[mholden]

http://www.rego-fix.com/screwmachine/taprigid.asp is the tap collets but I would use the rigid tap holder you can quickly chage taps if they break or get dull and hold the square shank.
http://www.techniksusa.com/metal/ttcartc.htm

[moldcore]

The holder we have is like the one on this page:
http://www1.mscdirect.com/CGI/NNPDFF...1569&PMCTLG=00

Only until recently we used a Drill press adapted for tapping but because of the size of some molds bases we decided to tap them in the Milltronics VMC. I’m trying to establish consistency in depth to prevent breakage because every hole is a blind hole in this business. Using 500rpm seems to give us the best results for now.

[single phase]

I have seen the RT feature over tap the depth many times in my cent6. However, this information is interesting, I will try some tests.

I always thought the z axis servo followed the spindle encoder. So if the spindle tries to get up to 1000 rpm and it takes too long to do so the control algorithm does not shut it down early (before it reaches commanded rpm).

I purchased the RT option and installed it myself. I do not remember any wiring harness except what came on the encoder. If you look in the head of the mill you will see there is a large timing belt pulley around the spindle. If you have RT it will have a belt around it and an encoder setting next to it. My encoder had a plug that connected right up to a plug that was hanging right over the area where the encoder goes.

Cheers
Dave