Fadal Rigid Tap cycle help

[Joe307]

Greetings all,

I am a new user to the Fadal 15XT. I am stil trying to get mastercam to post a correct rigid tap cycle. Was wondering if someone can take a look at this post and see if I am missing something.

What I am planning to run is a #8-32 tap on two holes at the same depth. What is listed below is what my post proccessor has spat out. I don't think the Rpm's and feeds are correct.

Thanks

Joe

 

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N5 O0000 ( CA-216-8 )

N10 ( CREATED ON 07-13-04 AT 3:39 PM )

N15G20

N20G0G17G40G80G90

N25 ( #8-32 TAPRH TOOL - 6 DIA. OFF. - 6 LEN. - 6 DIA - .164 )

N30T6M6

N35G0G90S5000.2M5M90E1X.2Y-.604

N40H6Z.1M8

N45G84.1G99X.2Y-.604Z-.312R0.1S5000.2F156.25

N50X3.568S5000

N55G80

N60M5M9

N65G90H0Z0.

N70E0X0Y0

N75M30

%

%

[BK]

Hey Joe,

You might want to look at the other post on the BBS about Fadal tapping at different Z depths.

Actually your code looks about right.

I like to run a G8 before the start of a tap cycle.

Your speed and feed are correct but are too high I believe.

We have two new Fadal 4020's and the book says the maximum RPM for tapping is 3000.

So your speed would be 3000 and the feed would be 93.75

HTH,

Bob

[Mark Tower from C&H Machine]

Hi joe

 

welcome to the forum

this is what your cycle should look like

"Q" is your pitch

"F" is your spindle speed

notice the G84.2 before your G84.1

this sets the machine for the rigid tap cycle.

also the M90 on your initial Go G90 E1 line

sets the spindle for rigid tap

 

good luck

 

 

%

N5 O0000 ( CA-216-8 )

N10 ( CREATED ON 07-13-04 AT 3:39 PM )

N20G0G17G40G80G90

N25 ( #8-32 TAPRH TOOL - 6 DIA. OFF. - 6 LEN. - 6 DIA - .164 )

N30T6M6

N35G0G90E1X.2Y-.604M90

N40H6Z.25M8

N4G84.2

N45G99G84.1X.2Y-.604Z-.312R0.25Q.0312F5000.2

N50X3.568S5000

N55G80

N60M5M9

N65G90H0Z0.

N70E0X0Y0

N75M30

%

[Joe307]

I talked to my distributor and he told me that MasterCam will adjust feed rate automatically according to spindle RPM.

Just wondering why is a G8 called out? The book says its for Acceleration.

My new question is how does one determine spindle speeds for a tap. I know it many sound basic but I am so used to do things conventionally.

 

Oh here is my new code by the way.

%

N5 O0000 ( CA-216-8 )

N10 ( CREATED ON 07-14-04 AT 7:53 AM )

N15G20

N20G0G17G40G80G90

N25 ( #8-32 TAP )

N30T6M6

N35G0G90S200.2M5M90E1X.2Y-.604

N40H6Z.1M8

N45G84.1G99X.2Y-.604Z-.312R0.1S200.2F6.25

N50X3.568S200

N55G80

N60M5M9

N65G90H0Z0.

N70E0X0Y0

N75M30

%

[crazy^millman]

The G8 is to allow the machien to do a smooth tapping cycle according to the book and also I use it for 2d tools paths for feedrates over 100 ipm on 2d work to insure I get the best finish possible.

 

You are also missing the G84.2 that you need for helping the machine get ready for the tapping cycle on a Fadal. I also think you will have problems tapping below 750 in high gear also need to be at a minumin of 750 from what I have read in the book if in high gear.

 

HTH

[Thad]

quote:

---

The G8 is to allow the machien to do a smooth tapping cycle

---

Specifically, it will make the reversal of the Z axis a smoother transition.

 

Thad