Need Help!- Tapping on Bridgepotr series 1 tnc 145

[jaztau]

Hi everyone...does anyone know how to do actual tapping on the Bridgeort series 1 tnc 145, the programing manual has one brief discription with some programe lines but in theory there must be more to it because i tried it today and the going in was sort off ok but how to get the tap out again??

Any advice will be appreciated.

[lloydsp]

Originally Posted by jaztau Hi everyone...does anyone know how to do actual tapping on the Bridgeort series 1 tnc 145, the programing manual has one brief discription with some programe lines but in theory there must be more to it because i tried it today and the going in was sort off ok but how to get the tap out again?? Any advice will be appreciated.

Reverse the spindle.

LLoyd <G>

[jaztau]

LLoyd do you actualy know anything about this machine or any machining?? ...the machine must be programed to move at the right pitch..to reverse the spoindle will just strip or brake the whole job!!

[lloydsp]

Originally Posted by jaztau LLoyd do you actualy know anything about this machine or any machining?? ...the machine must be programed to move at the right pitch..to reverse the spoindle will just strip or brake the whole job!!

I'm sorry. I thought you could just lock the spindle feed, tighten the locks on the knee, and force the whole table downwards by reversing a 4-40 tap. Alternatively, you could loosen up all the bolts holding the ram, and let the tap force those bolts up out of their sockets.


LLoyd

[gus]

A 145 does not rigid tap. it is a 2 1/2 axis machine.

[lloydsp]

Originally Posted by gus A 145 does not rigid tap. it is a 2 1/2 axis machine.

Well, the implication was that he already HAD executed a tapping maneuver (um... half of one, actually <snicker>)

So, then: Since he doesn't understand the maneuvers necessary to back the tap out, there's another solution a person like him could use --

He could install a honkin' big contactor with enough contacts so that he can reverse the spindle AND the Z-drive all at once. Then he could back out with the same code he used to ruin the work in the first place.

Or, he could just slam the X-drive to high-speed slew, and run that tap out sideways. It even works with BIG ones!

('seen _that_ done before! <G>)

LLoyd

[gridley51]

Seems like you`re wasted here Lloyd.A guy as clever as you really needs to take your ball and go up the freeway and play.
Mark.

[lloydsp]

Originally Posted by gridley51 Seems like you`re wasted here Lloyd.A guy as clever as you really needs to take your ball and go up the freeway and play. Mark.

Mark,

Would it have been more constructive to tell him to eshew tapping under power, and hand-tap all his holes?

Some questions are legitimate. Some must be trolls.

When a guy asks you, "If I downfeed, and run the spindle clockwise to thread in a tap, how do I get it back out?", you have to either tell him in deeply controlled fashion how to apply up-feed and run the spindle widdershins, OR you treat the question like the troll it must be, and give him a "shop" solution.

Besides... admit it. YOU'VE seen guys hand-cobble G-code to "remove" taps sideways, too; haven't you? (and weld spanners to benchtops, etc...)

All in fun. I just couldn't take the question seriously. When he told me I didn't understand anything about machining, the Devil made me do it.

LLoyd

[jaztau]

So why do they say in Programing manual that it can be done, it is actualy on of the 6 quick programing cycles?...i managed to programe the downward tapping cycle by following the manual sample but they dont say how to reverse...

[jaztau]

What a pity that a so called clever guy has to give such a stupid reply.......

[gus]

because it doesn't reverse, it assumes you are using a tapping head.
no input on control for spindle encoder
no encoder on spindle means no rigid tapping.
the tapping cycle[note it is not rigid tapping] is just a slow in slow out cycle, where a drill is slow in rapid out

[jaztau]

Gus maybe i must start this whole thread from the begining because it seem my machine might be to old for some off the members of this forum...I have the Interact series 1 proraming manual in front of me..in this manual they say that you can tap with a ¨Fixed programming cyle¨there are 8 cyles, and tapping is cycle 2...with the example in the book the tap only goes in....so GUYS!!!! all i want to know is how to reverse the whole setup...is this such a dificult question?